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حسابات كثافات الحالة لما قبل توازن التفاعل النووي باستخدام نموذج الجسيمة المثارة == The Level Density Calculations of Pre - Equilibrium Nuclear Reaction Using the Exciton Model

Author name: علي داود سلوم العجيلي
Supervisor name: شفيق شاكر المولى
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم عرض كثافة الحالات الجزئية للجسيمات والفجوات المطلوبة لحساب المقاطع العرضية لما قبل توازن التفاعل النووي. حيث حسبت كثافة الحالات الجزئية باستخدام نموذج الاكسايتون ذا التباعد المتساوي الفسح الذي يعتبر الفسح بين المستويات متساوية وكثافة الحالة لجسيم مفرد ثابتة. صيغة اركسون التي تمثل الصيغة الخام وجميع الصيغ المصححة لكثافة الحالات الجزئية الناتجة من اضافة تصحيحات حقيقية لصيغة اركسون قد درست. وهؤلاء التصحيحات هم : التصحيح الناتج من مبدا باولي ، تصحيح الازدواج ، تصحيح الفجوات الفعالة والخاملة ، تصحيح عامل الشحنة ، تصحيح البرم ، تصحيح الزخم الخطي ، تصحيح الايزوسبن. في هذا العمل تم اقتراح الصيغة الشاملة التي تتضمن التصحيحات اعلاه حيث قورنت مع الصيغ الاخرى لكثافة الحالات الجزئية وقد بينت المقارنة ان صيغة تصحيح البرم هي الاقرب للصيغة الشاملة. كذلك قورنت نتائج الصيغ المصححة مع صيغة اركسون باعتبارها الصيغة الخام ونوقشت الفروقات بين هذه الصيغ وبين اركسون.كما درست كثافة الحالات الجزئية لمركبتين لصيغة اركسون وصيغة التصحيح الناتج من مبدا باولي وتصحيح الازدواج حيث شوهدت فروقات واضحة عن حالة المركبة الواحدة. كذلك تم حساب كثافة الحالات الجزئية باتخاذ كثافة الحالة للجسيم المفرد غير ثابتة (تقريب نموذج التباعد غير المتساوي) حيث تم اشتقاقها باستخدام متغير كثافة الحالات من صيغة القريشي الاولى وصيغة القريشي الثانية وصيغة روهر وقد لوحظ ان النتائج تختلف كما لو كانت كثافة الحالة لجسيم مفرد ماخوذة من نموذج الفسح المتساوية. واخيرا قورنت نتائج كثافة الحالات الجزئية مع النتائج المكتوبة بالفورتران 77 الموصوفة بواسطة الباحث افرجينو. بينت المقارنة ان نتائجنا يمكن اعتمادها في حسابات كثافات الحالات النووية لما قبل توازن التفاعل النووي. | The partial level density (PLD) of the particles and holes,which are required to calculate the cross sections of pre - equilibrium nuclear reactions, are reviewed. PLD were calculated using the equi - distant spacing model (ESM) that considers the spacing between the levels is equal and the single particle level density is constant.Ericson's formula which represents the crude formula and all other corrected formulae of PLD resulted from adding somereal corrections to Ericson's formula are studied. These corrections are; the correction due to Pauli's principle, pairing effect, active and passive holes effect, charge factor effect, surface effect, spin effect, linear momentum, and isospin effect.In this work, the comprehensive formula, which includes the above corrections, is suggested and compared with other PLD formulae. The comparison shows that the Ericson's formula with spin correction is closed to the comprehensive formula. The results of each PLD corrected formula are compared with the results of Ericson's formula and the effects of any correction toEricson's formula are discussed. Also, Two - component formula has been studied for Ericson, Williams and pairing, the results show that there is a remarkable difference between them. In addition, the PLD has been studied with various nuclei having different mass number (56Fe, 96Mo, 148Sm and 162Dy) and the results illustrate that the PLD increase with increasing the mass number. PLD is calculated by taking the single particle density as not constant (i.e. non - ESM approach) and by taking other expression to single particle level density where derived using the level density parameter from Al - Quraishi first formula, Al - Quraishi second formula and Roher formula. It is noted that the results differ from the results if the single particle level density which are taken from ESM.Finally, the results of PLD are also compared with the results of PLD code that are written in Fortran77 and distributed by Avirgeanu. The results show that our code can be dependentand can be used in nuclear level density calculations for preequilibrium reactions

القياسات والتقييم البيئي في منطقة الراشدية - بغداد == Environmental Radioactivity of Al - Rashidiyah Site - Baghdad

Author name: عدوية محسن علوان
Supervisor name: راجحة رشيد محمود | خالد هادي مهدي
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: الهدف من هذه الدراسة هو تقييم مستوى النشاط الاشعاعي الطبيعي في التربة والمياه والنبات والاسمدة والرواسب التي تم جمعها من مواقع مختلفة في منطقة الراشدية وذلك باستعمال تقنيتين الاول مطيافية اشعة γ وكاشف الجرمانيوم عالي النقاوة (HPGe) ذي الكفاءة 40% وقدرة تحليل 1.8keV وبطاقة 1.33MeV بالنسبة للكوبلت - 60، لقياس تراكيز اليورانيوم - 238، الثوريوم - 232 والبوتاسيوم - 40 بالاضافة الى السيزيوم - 137 وذلك للوقوف على المستويات الاشعاعية. اظهرت قياسات مطيافية اشعة γ النويدات المشعة الطبيعية (اليورانيوم - 238 والثوريوم - 232 والبوتاسيوم - 40) والصناعية (السيزيوم - 137) ، ان قيم الفعالية النوعية في نماذج التربة تراوحت من 12.3±0.7 الى 22.1±1 و8.2±1 الى 21.2±1.2 و226.3±15.3 الى 1325±54.8 و1.5±0.2 الى 10.5±0.6 بكرل/كغم على التوالي. اما قيم الفعالية النوعية في نماذج المياه فتراوحت من <MDA الى 4.4±0.4 و<MDA الى 0.8±0.1 و<MDA الى 23.7±3.7 بكرل/كغم على التوالي. وفي نماذج النبات فتراوحت من <MDA الى8.4±1 و<MDA الى 0.4±0.1 و<MDA الى 1691.3±73.7بكرل/كغم على التوالي. وفي نماذج الاسمدة فتراوحت من <MDA الى 12±1.14 و<MDA الى 8.5±2.1 و325.3±22.3 الى 1351.4±56.9 و1.4±0.39 بكرل/كغم على التوالي ، واخيرا في نماذج الرواسب فتراوحت قيم الفعالية النوعية من 13.2±0.65 الى 17.7±0.8 و10.2±0.5 الى 15.1±0.8 و250±13.4 الى 376.6±18.6 و0.9±0.2 الى 3.3±0.3بكرل/ كغم على التوالي. وتم مقارنة نتائج الدراسة الحالية مع قيم المعدل العالمي المسجلة. ولوحظ ايضا ان تركيز البوتاسيوم - 40 في بعض نماذج التربة والنبات والسماد اعلى من الحد المسموح به عالميا والتي تتراوح من 140 الى 850بكرل/كغم حسب تقارير UNSCEAR (2000). اما التقنية الثانية باستعمال عداد التناسب الغازي موديل S5XLB بفولتية 450V لقياس فعاليات اجمالي جسيمات الفا وبيتا وكاما ، فتراوحت تراكيزهم من 0.01 الى 0.7cpm و0.01cpm و0.7 الى 7.2cpm على التوالي بالنسبة لنماذج المياه. وفي نماذج التربة فتراوحت تراكيزهم من 0.83 الى 1.83cpm و18.53 الى 25.4cpm و3.5 الى 18cpm على التوالي. واخيرا في نماذج النبات فتراوحت قيم تراكيزهم من 0.01 الى 0.59cpm و2.1 الى 68.96cpm و2.9 الى 12.3cpm على التوالي. كما تم قياس معامل الانتقال بالنسبة للبوتاسيوم واليورانيوم فكانت القيم العليا في نبات الخس قد وصلت الى 1.8، 0.4 على التوالي ، بينما لوحظت القيم الدنيا لعامل الانتقال بالنسبة للبوتاسيوم في نبات التفاح ولليورانيوم في نبات القرع. | The aim of this study was to evaluate the level of natural radioactivity in soils, waters, plants, fertilizers and sediments collected from different locations in Al - Rashidiyah site using two techniques : the first is a hyper - pure germanium (HPGe) detector with a relative efficiency of (≥40%) and Resolution ≤1.8keV at energy of 1.33MeV for Co - 60 in order to determine the levels of radiation. The measurements of γ - ray spectroscopy showed the primordial radionuclides namely the 238U and 232Th decay chains and 40K, 137Cs. The values of specific activity in soil samples ranged from 12.3±0.7 to 22.1±1, 8.2±1 to 21.2±1.2, 226.3±15.3 to 1325±54.8 and 1.5±0.2 to 10.5±0.6 Bq.kg - 1, respectively. The values of specific activity in water samples ranged from <MDA to 4.4±0.4, <MDA to 0.8±0.1 and <MDA to 23.7±3.7Bq.kg - 1, respectively. In samples of the plant, they ranged from <MDA to 8.4±1, <MDA to 0.4±0.1 and <MDA to 1691.3±73.7Bq.kg - 1, respectively. In samples of the fertilizer, they ranged from <MDA to 12±1.14, <MDA to 8.5±2.1, 325.3±22.3 to 1351.4±56.9 and 1.4±0.39Bq.kg - 1, respectively. Finally, in sediment samples, they ranged values specific activity from 13.2±0.65 to 17.7±0.8, 10.2±0.5 to 15.1±0.8, 250±13.4 to 376.6±18.6 and 0.9±0.2 to 3.3±0.3Bq.kg - 1, respectively. The results of the current study have been compared with the world mean values specified by the UNSCEAR (2000). The specific activity of 40K in some of the soils, plants, fertilizers samples in the current study were found to be higher than the worldwide range of values which are 140 - 850 Bq.kg - 1 reported by UNSCEAR (2000). The second technique was done using gas proportional counter model Tennelec Series 5 (S5XLB) with voltage 450V to measurement gross alpha, beta and gamma activities, ranging from 0.01 to 0.7cpm, 0.01cpm and from 0.7 to 7.2cpm, respectively in water samples, from 0.83 to 1.83cpm, from 18.53 to 25.4cpm and from 3.5 to 18cpm, respectively in soil samples. At last, they ranged from 0.01 to 0.59cpm, from 2.1 to 68.96cpm and from 2.9 to 12.3cpm, respectively in plant samples. The transfer factor (T.F) for 40K and 238U was measured and the highest values observed in lettuce reached to 1.8, 0.4 respectively. While the lowest values were observed for the transition factor for potassium in the plant apples and uranium in the plant brassic.

دراسة نظرية لتاثير الانكسار المزدوج في المضخم شبه الموصل البصري == Theoretical Study of the Birefringence Effect in Semiconductor Optical Amplifier

Author name: عدنان هاشم محمـد
Supervisor name: حسن عبد ياسر | علي هادي حسن
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: ان هدف كثير من البحوث في مجال الاتصالات الحديثة هو زيادة سعة النقل في الانظمة التي تسخدم مزج - تقسيم الطول الموجي ( WDM) الشائعة الاستخدام في الشبكات البصرية الحالية. تستخدم المضخمات البصرية التي تتنوع حسب اسباب الاستخدام لضمان الحفاظ على قدرة النبضة ضمن مستوى مسموح لذا يستخدم في الكثير من الحالات كمضخم ضمن الخط الناقل اضاقة الى اسخدامه في تطبيقات مختلفة. يظهر مضخم اشباه الموصلات البصري ظاهرة ثنائي الانكسار التي تجعله يتاثر بحالة الاستقطاب للنبضة الداخلة. ان من المتوقع ان يكون لحالة التزامن بين ظاهرة ثنائي الانكسار والتاثر بحالة الاستقطاب الداخلة دور كبير في سلوك المعاملات المختلفة للمضخم. من جهة اخرى فان ظاهرة اقتران النمط والتي تتمثل بتبادل القدرة بين الانماط المتعامدة لايمكن اهمالها لدورها الكبير في تشكيل خواص المضخم. تم اقتراح طريقة رياضية جديدة لحل معادلة الانتشار في مضخم اشباه الموصلات البصري والتي تاخذ بنظر الاعتبار التاثيرات الحركية البطيئة وظاهرة اقتران النمط. ان هذه الطريقة مبنية على اساس تقسيم المضخم الى مقاطع صغيرة بالاتجاه الطولي لضمان اعتبار كسب المادة ذات تغيير صغير ضمن كل مقطع ويمكن اعتبارها ثابتة وهذا بالنتيجة يؤدي الى اعتبارقدرة النبضة ثابتة ايضا ضمن كل مقطع. تم اشتقاق صيغة تكرارية لحساب التاثيرات على طول المضخم وحلت هذه الصيغ التكرارية بالاعتماد على معادلات الربح. بينت النتائج ان الاعتماد على معادلات اقتران النمط تكون اداة مناسبة لدراسة انتشار الانماط داخل المضخم. عند غياب حالة اقتران النمط فان الحافة المتقدمة تختزل الكسب المنجزعلى الحافة المتاخرة وان زمن استرداد الطوريكون طويلا. عند الاخذ بنظر الاعتبار حالة اقتران النمط فقد حدث انحراف في قمة النبضةsuper Gaussian امزامن استرداد الطور فقد قل بوجود حالة اقتران النمط. يعرض الطيف للنمط المستعرض الكهربائي (TE) والمغناطيسي (TM) انخفاضات وارتفاعات بسبب تضمين الطور الذاتي(SPM) غير ان الطيف الكلي يعرض انخفاضات وارتفاعات اقل ويعتمد على معامل الشكل للنبضة. من اجل تحليل تدوير الاستقطاب خلال المضخم فقد تم دمج تاثير حالة الاستقطاب الداخل وخواص مصفوفة الانتقال لكل مقطع من مقاطع المضخم وبوجود اقتران النمط ايضا حيث تم الحصول على معادلات جديدة تصف تطور حالة الاستقطاب داخل المضخم. تم حل هذه المعادلات تحليليا ليتم الحصول على صيغ جديدة لتحديد خواص استقطاب الضوء بدون حالة ترابط الانماط وبوجودها. بينت النتائج ان درجة الاستقطاب عند اهمال اقتران النمط تظهر عند السطح الذي يعني ان الضوء مستقطب كليا. تقل درجة الناقصية كدالة لطول المضخم وتتناسب عكسيا مع القدرات الداخلة امزااوية الاستقطاب كدالة لطول المضخم فتقل عند مواقع مختلفة من المضخم ولاتعتمد على القدرة الداخلة. تقل درجة الناقصية كدالة للقدرة الداخلة ولاتعتمد على التيارعند جميع الزوايا. ان تغيير التيار يعرض نتائج مهمة فيما يخص زاوية الاستقطاب عند القيمة . ان دوران مستوى الاستقطاب عند هذه الزوايا يكون حساسا جدا لمدى صغير جدا من التيار. بينت النتائج عند الاخذ بنظرالاعتبارظاهرة اقتران النمط ان حالة الاستقطاب تظهر اسفل سطح كرة Poincare الذي يعني ان حالة الاستقطاب تغيرت وكان الضوء اصبح مستقطبا جزئيا. ان وجود ظاهرة اقتران النمط جعل تغيير زوايا الناقصية وزوايا الاستقطاب كدالة لطول المضخم تبدو اقل مقارنة بحالة اهمال تاثير اقتران النمط.

دراسة الضوضاء المرافقة لصور البث التلفزيوني الارضي وطرق تقليل تاثيرها == A study of the noise that associated with TV images and the reduction methods of its effects

Author name: عبد الله حمود محمد الجبوري
Supervisor name: علي عبد داود الزكي | عبد الله احمد رشيد
General topic: Physics
Specific topic: Optical Fiber
Degree: Doctorate
Language: Arabic
University location: Baghdad
Key words:
  • البث التلفزيوني
  • صور رقمية
  • الضوضاء الجمعية والضوضاء الضربية
First pages:
Abstract: تعد الضوضاء المرافقة للصور التلفزيونية من جملة المشاكل التي واجهت عملية تطور هذه الاجهزة ، لانها تجعل عملية تفسير وتحليل الصور الخبريه الناتجة عملية صعبة وتقلل من الفائدة المرجوة منها . ومنها الصور التلفزيونية ذات البث الارضي VHF , UHF والبث الفضائي . لان الصور التلفزيونية هذه تنتقل عبر نظام لايكاد يخلو من التعقيد من حيث توليد الاشارة التلفزيونية او الفديوية ثم ترميزها وبثها عبر الاثير واستقبالها مرورا بمراحل فك الشفرة ومن ثم مرورها باجهزة التنغيم والتنعيم والتوليف حتى ظهورها على الشاشة . لذلك ستتاثر بفقدان وتشوه لجزء من المعلومات المرسلة في الموجة ونتيجة لذلك ستتاثر بضوضاء جمعية من النمط الكاوسي مما يؤدي الى تشويه وتردي في نوعية هذه الصور . لقد تم التوجه في هذا البحث الى اجراء دراسه تحليليه عن الخصائص الاحصائيه للصوره بشكل عام وعن الخصائص الاحصائيه لمناطق الاشرطه اللونيه الثمانيه لكل صوره بشكل خاص وكالاتي دراسة الهستوكرام للصوره ككل ثم دراسة الهستوكرام لمناطق يتم استقطاعها من كل شريط من هذه الاشرطه الثمانيه وحساب المعدل والانحراف المعياري ومعامل التغاير وتاثر هذه العوامل بزاوية تدوير الهوائي . كما تم التوجه في هذا البحث ايضا الى دراسة هذه الضوضاء ومعرفة نمطها واسباب ظهورها عن طريق تحليل الضوضاء احصائيا باستخدام طريقة جديدة تتضمن عزل المؤثرين الضوضائيين الضربي والجمعي ، ثم ايجاد التوزيع الاحصائي الذي تتبعه هذه المؤثرات الضوضائية . وقد قمنا باستقطاع مناطق محدده من كل شريط من اشرطة الصورة التلفزيونية ، ثم دراسة المنحنيات الاحصائية للمناطق المستقطعة لغرض تحديد نمط الضوضاء السائدة فيها بالاضافة الى دراسة العلاقة بين زاوية تدوير الهوائي والمؤثرات الاحصائية والتي تتضمن المعدل والانحراف المعياري ومعامل التغاير (µ ، σ ، Cv ) للمركبات الثلاث RGB وكذلك لمركبة الاضاءة. كما تمت دراسة العلاقة بين كل من المعدل (µ) والانحراف المعياري (σ) لعدد من المناطق المستقطعة لمركبة الاضاءه لبيان نوع الضوضاء . كما تمت دراسة العلاقة بين زاوية تدوير الهوائي مع كل من المؤثرالجمعي µ - Target والمؤثر الضربي µ / Target. لقد اعتمدت المرشحات الرقمية لاغراض تحسين الصور التلفزيونية لازالة الضوضاء من هذه الصور باعتماد تقنيات الترشيح والتي تضمنت مرشحات المعدل والوسيط ومرشح لي ، كما تم تطبيق هذه المرشحات للفضاءات اللونية RGB ، YIQ ، HLS . كما تم استخدام معايير فحص الجودة العيانية والمعايير الكمية والتي تضمنت حساب المعدل ونسبة الاشارة الى الضوضاء لتخمين كفاءة المرشحات المستخدمه | The noise that associated with TV images is considered to be a very important problem that complicates the developments of these systems . Because of that, it makes the interpretation and analysis of informative images a very difficult process, and lessen their advantages . The most common type of theses images are TV images transmitted by antenna work with (VHF,UHF) frequency and Satellite Transmission. Because TV images move through a complicated system in generating the TV or video signal, coding them, transmitting them, and receiving them by decoding and passing with different sets until appearing on screen. This will lead to a loose and fraud for a part of the information sent in the wave. As a result, it will be affected by an additive noise (Gaussian noise) which leads to deforming and destroying the quality of these images. This research aimed at studying the noise and knowing its type and the appearance reasons through analyzing the noise statistically using a new way of excluding the two noisy multiplicative and additive operators, then finding the statistical distribution followed by those noisy operators. We have cut certain areas of every bar in TV images, then we studied the statistical curves of regions in order to know the type of noise, as well as we studying the relation between the angle of rotating the antenna and the statistical operators which include the mean µ ,standard deviation σ and variance coefficient Cv of the three components RGB and the illumination component as well. Then we studied the relation between the mean µ and standard deviation σ for region's illumination component so as to know the type of noise. Also, this research studied the relation between the angle of rotating the antenna with both the additive operator target - µ and the multiplicative on target/µ. The digital filters were depended in order to improve T.V image and reducing the noise using filtering techniques which included the mean, median and Lee's filters. These filters were used in color transformation for RGB,YIQ,HLS spaces. Fidelity criteria check and quantitative measures which include signal to noise ratio to guess the efficiency of used filters .

الخواص الكهربائية والتركيب الدقيق لمقاوم اوكسيد الخارصين السيراميكي المتغير المطعم بالاتربة النادرة == Electrical Properties & Microstructure Of ZnO - Based Varistor Ceramics Doped With Rare Earth

Author name: عادل اسماعيل كاظم
Supervisor name: ايسر جمعة ابراهيم | عبد الحميد رحيم مهدي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: يعد اوكسيد الخارصين (ZnO) السيراميكي مادة شبه موصلة نوع - n، ويلعب دورا هاما في مدى واسع من العمليات الصناعية والمنتجات التجارية.ان من اكثر الاستعمالات اهمية استعماله لحماية الدوائر الكهربائية والمعدات الالكترونية من الجهد الزائد المدمر نتيجة البرق او الناتج من الارتفاع الكبير والمفاجيء في قيم الجهد الكهربائي, وتسمى المقاوم المتغير المعدني (Metal Oxide Varistor MOV) . يعد المقاوم المتغير نبيطة ذات سلوك غير اومي وخواصه الكهربائية تشبه تقريبا في عملها ثنائي زينر. لغرض دراسة وتوصيف مركبات مقوم اوكسيد الخارصين السيراميكي المتغير وتحسين خواصه الكهربائية, تم تحضير مركباته باضافة بعض الاكاسيد المعدنية وهي Bi2O3، Sb2O3، Co3O4، Cr2O3، وMnO2, حيث تم اختبار تاثيرها لوحدها اولا, وثانيا تم اضافة اكاسيد الاتربة النادرة (M2O3) مع الاكاسيد المذكورة اعلاه واختبار تاثيرها على المقاوم المتغير, حيث ان (M=Dy, La,Y) وبتراكيز مولية ( *10 - 3(1,5,10)).تمت عمليات التحضير والسيطرة على التركيب الدقيق عن طريق التحكم بظروف عمليات الحرق بدءا من عملية الاعداد بخلط اوكسيد الزنك مع الاكاسيد المضافة ومن ثم الحرق في درجة حرارة 600℃ وبمعدل 5 ℃⁄min في الفرن ولمدة ساعتين للعينات جميعها وذلك لازالة الغازات والرطوبة من المساحيق. بعد عملية الحرق تم كبس المساحيق بشكل اقراص بقطر 15mm وسمك 2mm تقريبا تحت ضغط يساوي 25MP.بعد عملية الكبس اجريت عملية التلبيد (تفاعلات الاطوار الصلبة والاطوار السائلة) بدرجات حرارة مختلفة ( 1050, 1100, 1150 ℃ ) وزمن ثابت للعينات جميعها مقداره ساعتين للحصول على الاشكال النهائية والوصول الى الخصائص المطلوبة.تمت دراسة بعض الخواص الفيزيائية للعينات المحضرة وهي الكثافة والمسامية والخواص التركيبية وذلك لغرض تقييم تاثير الاكاسيد المضافة وظروف التحضير على سلوك التطبيق الصناعي للعينات.وقد تبين ان مقدار الكثافة النسبية والمسامية تتاثر بدرجة حرارة التلبيد وبنسب تراكيز اكاسيد الاتربة النادرة المضافة ونوعها,فقد ازداد مقدار الكثافة بازدياد درجة حرارة التلبيد ونسبة او تركيز اكاسيد الاتربة النادرة المضافة ونتيجة لذلك فقد نقص مقدار المسامية.لقد اعطى اختبار التركيب المجهري للمادة المحضرة رؤية واضحة عن الانتشار والنمو الحبيبي , وان نتائج اختبار الاشعة السينية (XRD) اوضحت ان التركيب البلوري لها معيني قائم كما ان قيم (a, b, c) وحجم خلية الوحد قد ازداد بزيادة درجة حرارة التلبيد ونسب تراكيز الاكاسيد المضافة ونوعها.اظهرت الحبيبات النانوية والميكروية ضمن البحث الحالي تاثيرا كبيرا على الخصائص الكهربائية المدروسة والتي صممت لها اداة في المختبر لقياس معامل السلوك اللاخطي, مقدار جهد الانهيار , تيار التسرب, قابلية امتصاص الطاقة , انحدار الجهد وجهد الحدود الحبيبية.حيث تبين ان معامل السلوك اللاخطي يزداد بازدياد تركيز الاكاسيد المضافة وارتفاع درجة حرارة التلبيد ومن ثم يبدا بالنقصان بعد درجة (1100℃) بسبب تطاير وتبخر اوكسيد البزموث وطور(. (Zn7Sb2O12 بينما نقص مقدار جهد الانهيار وقابلية امتصاص الطاقة وانحدار الجهد بازدياد درجة حرارة التلبيد,اما تيار التسرب فقد ازداد مقداره بازدياد درجة حرارة التلبيد, وكذلك بالنسبة لجهد الحدود الحبيبية فقد ازدادت قيمها بازدياد درجة حرارة التلبيد. | ZnO is a ceramic material which tends to intrinsically form as an n - type semiconductor material, which plays an important role in a wide range of industrial processes and commercial products.One of most important usages is a Surge protection device which used to protect power and electronic equipment from the destructive transient overvoltage which arises from lightning or other large - magnitude surge, this device is called metal oxide varistor (MOV).Varistors are voltage dependent, non - ohmic devices whose electrical characteristics are almost similar to back - to - back Zener diodes.Improvement ZnO varistor performance accomplished by doping it by some metal oxides, Bi2O3, Sb2O3, Co3O4, Cr2O3, and MnO2, where they were testing their effect alone first, and second was added rare earth oxides (M2O3) with oxides mentioned above and test their effect on varistor, where (M = Dy, La, Y) and molar concentrations (10 - 3, 5*10 - 3, 10*10 - 3)The preparation process starts from mixing ZnO with additives, calcination at 600℃ in a furnace to remove the gases and the humidity from the powders. Then the calcined powders uniaxially pressed into discs (pellets) of 15 mm in diameter and 2 mm in thickness under a pressure equals to 25MP. After pressing the green pellets sintered under different temperatures (1050, 1100, 1150℃) and a fixed time to accomplish the final shapes and reach the desired properties of the samples.Then the densities of the samples were measured by using Archimedes Principle with mercury liquid to calculate the relative density and the porosity of each sample, and to study the effect of the sintering temperature and REO concentration, which already be obvious the effect of them. The microstructure test of the material prepared gave a clear vision for the diffusion and grain growth, although the results of XRD test showed that the crystal structure is an orthorhombic, and the values of (a, b, c) and the size of a the unit cell has been increased with increase the sintering temperature and ratios of the concentration of oxides added and kind.Micro and nano grains within the present research showed a significant effect on the studied electrical characteristics, which designed a tool in the laboratory for it and to measure the nonlinear coefficient, the amount breakdown voltage, leakage current, the potential gradient, the energy absorption capability, and the voltage per grain boundary. It was found that the nonlinear coefficient increases with the increasing of REO concentration added and increasing sintering temperature and then starts decreased after degree (1100℃ ) due to volatilization and evaporation of bismuth oxide and spinel phase (Zn7Sb2O12).The amount of breakdown voltage, potential gradient, energy absorption capability decreased with rising the sintering temperature, while the leakage current has been increased with increasing the sintering temperature, as well as the voltage per grain boundary has been increased with increasing of the sintering temperature.

دراسة طيفية ونظرية لمشتقات النايترون Nitron == Theorettiicall and Specttroscopiic Sttudiies off Niittron Deriivattiives

Author name: صلاح محمد علي رضا
Supervisor name: زياد عدنان صالح | فريال ولي عسكر
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: The main purpose of this thesis was to perform computational investigations on Nitron compound and its derivative( Nitro - Nitron) using Density Functional Theory (DFT) at an appropriate high level of theory and comparison with experimental data, in order to get better insight into the structures and energetic features of these compounds. The DFT calculations have been performed using Gaussian 09 program with GUI(Graphical User Interface) called Gaussview 5.08. The present study is separated in three parts, in part I, optimized geometrical parameters, vibrational frequencies, electronic maximum absorption wavelength in gas phase and solvent case (chloroform), and frontier orbitals (HOMO - LUMO), electrostatic potential surface (EPS), Mullikan and Natural atomic charge distributions of 1,4 - diphenyl - 3 - (phenylammonio) - 1H - 1,2,4 - triazolium(inner salt), (C20H16N4), commonly well - known as Nitron, were calculated by using DFT/B3LYP method with 6 - 311G(d,p) basis set. The Fourier Transform - Infrared (FT - IR) solid phase spectrum of the title compound was recorded in the spectral range (4000 - 400) cm - 1. The difference between the scaled wavenumbers and the observed values of most of the vibrational modes is nearly small. The UV - Vis spectrum was measured in the spectral range (200 - 800) nm in chloroform solution. The theoretical electronic (UV - Vis) spectrum calculated using the TD - DFT(C - PCM) method with chloroform solvent is more suitable than the gas phase to the experimental spectrum. The calculated HOMO and LUMO energies show that charge transfer occurs within the molecule.In part II of this thesis, the synthesis and characterization of a novel compound, (1,4 - Diphenyl - 3 - (p - nitrophenylamino) - 1,2,4 - triazolium hydroxide inner salt (Nitro - Nitron), (C20H15N5O2) were reported. The spectroscopic investigations of the novel compound were studied by 1H NMR, FT - IR, UV/Vis techniques. The 1H NMR spectra were recorded in DMSO solution. FT - IR spectrum in solid state was observed in the region 4000 - 400 cm - 1. The UV/Vis absorption spectrum of the compound which dissolved in chloroform was recorded in the range 200 - 800 nm. The structural data, fundamental vibrational modes, 1H NMR chemical shifts, frontier orbital energies(HOMO,LUMO), electrostatic potential surface (EPS), Mullikan and Natural atomic charge distributions, and band gap energy of the compound in the ground state were calculated using density functional theory(DFT) employing B3LYP/6 - 311G(d,p) basis set. The HOMO and LUMO analysis were used to elucidate information regarding charge transfer within the molecule. Based on the optimized geometry and by using time - dependent density functional theory (TD - DFT) methods in vacuum and solution(chloroform), the allowed excitation and oscillator strengths of electronic absorption spectrum were predicted. The solvation effects have been included by means of the conductor - like polarizable continuum model CPCM. chemical shifts were calculated using the Gauge - Independent Ato mic Orbital (GIOAO) method. In part III, The results of Hall effect and D.C electrical conductivity studies of the Nitron and its derivative (Nitro - Nitron) compounds are described in this part. The temperature dependence of semi - conductivity is also described. The values of carriers concentration, mobility, conductivity, resistivity, Hall coefficient, and thermal activation energy, are also presented.Finally, a comparison between the experimental data and the calculated results of three parts of this thesis appeared a good agreement

دراسة بعض الخواص الفيزيائية للايبوكسي المدعم بدقائق نانوية == STUDY OF SOME PHYSICAL PROPERTIES OF EPOXY REINFORCE WITH NANO PARTICLES

Author name: صفاء عبد صالح
Supervisor name: وداد حمدي جاسم
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم استخدام مادة الايبوكسي (EP) مع نسب خلط حجمية مختلفة (1, 2, 3, 4, 5, 7, 10, 15 و20%) من الجسيمات الزركونيا ( 2(ZrO والمغنيسا ( MgO) النانوية ومن الجسيمات 2 ZrO وMgO المايكروية لتحضير متراكبات الايبوكسي النانوية ومتراكبات الايبوكسي المايكروية لفحص ودراسة بعض من خصائصها الميكانيكية (متانة الانحناءومعامل الانحناء ومتانة الكسر وقوة الصدمة والصلادة ) والخواص الكهربائية العزلية ( ثابت العزل الكهربائي وزاوية ظل الفقد والتوصيلية الكهربائية) والخواص الحرارية (التوصلية الحرارية ودرجة الانتقال الزجاجي)طريقة تحضير عينات الايبوكسي وعينات متراكبات الايبوكسي النانوية وعينات متراكبات الايبوكسي المايكروية تضمنت مراحل الخلط الميكانيكي ومجانس خلط الامواج فوق الصوتية واستخدام منظومة التفريغ. تم استخدام فحص الانحناء ذي النقاط الثلاث وفحص وقوة الصدمة وفحص الصلادة وفحص السعة الكهربائية العزلية وفحص الماسح التفاضلي السعوي الحراري وفحص مجهر المسح الالكتروني وفحص التوصيل الحراري لفحص عينات الايبوكسي ومتراكباتة النانوية والمايكروية وقد اظهرت النتائج التي تم الحصول عليها من فحص متانة الانحناء ذي النقاط الثلاث زيادة تدعيم الخصائص الميكانيكية لمتراكبات الايبوكسي الزركونيا النانوية ,ان نسبة 2% من الخلط تؤدي الى اعلى نسبة تدعيم لا متانة الانحناء بلغت 52% اما معامل الانحناء فتضاعف مرتين عند هذه النسبة وايضزاادة متانة الكسر لتصل الى 86% مقارنة مع نتائج عينة الايبوكسي واما قوة الصدمة فقد بلغت 51% وارتفعت صلادة المادة 5% نسبة التدعيم 2% . وقد ظهر الكسر اللدن بشكل واضح في بعض منحنيات الاجهاد - الانفعال في متراكبات الايبوكسي زركونيا.كما اظهرت الخصائص الميكانيكية لمتراكبات الايبوكسي مغنيسيا النانوية زيادة تدعيمها بزيادة نسب الخلط الحجمية لجسيمات المغنيسيا النانوي في التراكيز القليلة (< 5%) حيث اظهرت النسبة 4% من MgO اانانوية اعلى قيمة لقوة الانحناء حيث ازدادة بنسبة 47% مقارنة EP) ) في حين معامل الانحناء ارتفع بنسبة 74% مقارنة EP) ) في حين متانة الكسر لمتراكبات الايبوكسي مغنيسيا النانوية فتضاعفت بحدود اربع مرات عن الايبوكسي وقد بلغت قوة الصدمة 65% عند نسبة التدعيم وارتفعت صلادة المادة 3% مقارنة EP) ) لوحده. وقد ظهر الكسر اللدن بشكل واضح في منحنيات الاجهاد - الانفعال في متراكبات الايبوكسي مغنيسيا..الخصائص الميكانيكية لمتراكبات الايبوكسي زركونيا المايكروية ومتراكبات الايبوكسي مغنيسيا المايكروية اظهر انخفاض في خصائصها الميكانيكية بارتفاع نسب الخلط الحجمي للجسيمات المايكروية للزركونيا وللمغنيسيا ما عدا معامل الثني فقد زاد بارتفاع نسب الخلط الحجمي لجسيمات الزركونيا والمغنيسيا المايكروي.وهذا يظهر تفوق الجسيمات النانوية عن الاخرى المايكروية حيث اضافتها بنسب ضئيلة تؤدي الى تحسين ملحوظ في الصفات الميكانكية والتي يتم تفسيرها عن طريق الصور الماخوذة عن مجهر الماسح الالكتروني والتي اظهرت البنية التركيبة لسطح الكسر لمتراكبات الايبوكسي زركونيا النانوية ولمتراكبات الايبوكسي مغنيسيا النانوية بوجود شقوق نانوية عند نسب خلط حجمية معينة ,وقد بينت صور الكسر انتهاء اغلب الشقوق من التركيب بسب وجود الاضافات لجسيمات الزركونيا والمغنيسيا النانوية فكانت اقل ما يمكن في نسب2 % من نسب الخلط الحجمي لجسيمات الزركونيا النانوي وعند 4% من نسب خلط حجمي لجسيمات المغنيسيا النانوي. وهذا معزز من النتائج العملية التي حصلنا عليها عند هذه النسب الضئيلة الاضافة واثرها في تحسين الصفات الميكانيكية للايبوكسي.ان الخصائص الكهربائية العزلية لمتراكبات الايبوكسي زركونيا النانوية ولمتراكبات الايبوكسي مغنيسيا النانوية اظهرت زيادة تدعيم ثابت العزل الكهربائي عند نسب الخلط الحجمية الواطئة لجسيمات الزركونيا والمغنيسيا النانوية في حين في نسب الخلط العالية (> 10%) بداء ثابت العزل الكهربائي لمتراكب الايبوكسي مغنيسيا الناوني بالارتفاع عن اعلى نسبة تحسن في حين ثابت العزل الكهربائي لمتراكب الايبوكسي زركونيا بالانخفاض. في حين ان زاوية ظل الفقد لمتراكب الايبوكسي زركونيا النانوي تزداد زيادة طفيفة بزيادة نسب الخلط الحجمي لجسيمات الزركونيا النانوي في حين زاوية ظل الفقد لمتراكب الايبوكسي مغنيسيا النانوي تقل بنسب قليلة بزيادة نسب الخلط الحجمي لجسيمات المغنيسيا النانوي.التوصيل الحراري لمتراكبات الايبوكسي زركونيا النانوية ولمتراكبات الايبوكسي مغنيسيا النانوية لها نفس السلوك نسب خلط حجمية مختلفة (1, 2, 3, 4, 5, 7, 10, 15 و20%) ان التوصيل الحراري لكلا المتراكبتين (لمتراكب الايبوكسي زركونيا النانوي ولمتراكب الايبوكسي مغنيسيا النانوي) يزداد بزيادة نسب الخلط الحجمية لجسيمات زركونيا ومغنيسيا النانوية. تمتلك المتراكبات النانوية توصيل حراري اقل من المتراكبات المايكروية. اما المتراكبات النانوية فقد امتلك متركبت الزركونيا قيما اعلى للتوصيل الحراري مقارنة بمتراكبة المغنيسيا. | Epoxy with various mix ratio of concentration 1, 2, 3, 4, 5, 7, 10, 15 and 20% of ZrO2, MgO nanoparticles and ZrO2, MgO microparticles were used to prepare epoxy microcomposites and epoxy nanocomposites in order to study the several mechanical properties (flexural strength, flexural modulus , fracture toughness, impact strength and hardness) and electrical properties (dielectrical constant , dissipation factor and thermal conductivity) and thermal properties (thermal conductivity and Tg).The molding process was used to prepare epoxy and their nanocomposite and microcomposite samples using, ultrasonic homogenizer and shearing mixer. Three point bending examine, impact strength examine, hardness shore D examine, The LCR meter examine, Scanning Electron Microscope (SEM) examine and Differential Scanning Calorimeter (DSC) were used also.The results where obtained to form 3 - point bending examine illustrated that the mechanical properties of EP/ ZrO2 nanocomposites were increased with increasing concentration of ZrO2 nanoparticles. The ratio of about 2% vol. fraction lead to Maximum improvement in flexural strength was 52%. flexural modulus improvement was doubled at this ratio of vol. fraction, fracture toughness is improved about 86% at 2% vol. fraction, impact strength is improved about 51% at 2% vol. fraction , while hardness is improved about 5% at 2% vol. fraction comparing with results of epoxy sample. Ductile behavior appears in some stress - strain curves of obtained for EP/ ZrO2 nanocomposites. The mechanical properties of EP/ MgO nanocomposites were increased with increasing concentration of MgO nanoparticles at low volume fractions (˂ 5%) of MgO nanoparticles. Flexural strength improved 47% at 4% vol. fraction. Flexural modulus is improvement about 74% at 4% vol. fraction, fracture toughness is rise about four times at 4% vol. fraction. impact strength is improved about 65% at 4% vol. fraction, while hardness is improved about 3% at 4% vol. fraction . Ductile behavior almost appears in stress - strain curves of EP/ MgO nanocomposites. The mechanical properties for epoxy ZrO2/ MgO microcomposites reduce with increasing concentration of ZrO2/ MgO microparticles. this show nanoparticles overcome for others microparticles; thus addition quit small amounts .lead to particularly improvement in mechanical properties ,which can be explain through the pictures . Scanning Electron Microscope (SEM) pictures show the topography of fractured structure of EP/ ZrO2 nanocomposites and EP/ MgO nanocomposites with nanocracks of the epoxy structure at some of volume fractions of ZrO2/ MgO nanoparticles, while the topography of fractured structure show the nanocracks almost vanish from the structure because of adding ZrO2/ MgO nanoparticles was at minimum value at 2% vol. fraction of ZrO2 nanoparticles and 4% vol. fraction of MgO nanoparticles . this enhance by experimental results which we got it in the small raito addition .their influence to improve mechanical properties of epoxy. Dielectrical properties of EP/ ZrO2 nanocomposites and EP/ MgO nanocomposites show; Dielectric constant improved at low volume fraction of ZrO2/ MgO nanoparticles, while at higher concentration (> 10%) Dielectric constant of EP/ MgO nanocomposites stile increased and Dielectric constant begin to reduce in EP/ ZrO2 nanocomposites. Tan delta of EP/ ZrO2 nanocomposites little increase with increasing volume fraction ZrO2 nanoparticles, while Tan delta of EP/ MgO nanocomposites begin to reduce with increasing volume fraction of MgO nanoparticles.Thermal conductivity for EP/ ZrO2 nanocomposites and EP/ MgO nanocomposites have the same behavior with 1, 2, 3, 4, 5, 7, 10, and 15% vol. fraction. thermal conductivity of both EP/ ZrO2 nanocomposites and EP/ MgO nanocomposites increase with increasing the volume fraction. EP/ MgO nanocomposites and EP/ MgO nanocomposites have thermal conductivity lower than from EP/ MgO microcomposites and EP/ MgO microcomposites

تحضير ودراسة مفرق هجين من مادة (CuInTe2) == Preparation and Study Heterojunction From CuInTe2 Material

Author name: شيماء قاسم عبد الحسن
Supervisor name: بشرى كاظم حسون الميالي | فلاح ابراهيم مصطفى العطار
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: حضرت سبيكة CuInTe2(CIT) بطريقة التبخير الحراري في الفراغ بعد ها تم تحضير اغشية هذه المادة على قواعد من الزجاج بدرجات حرارة تلدين K((673,473 وسمك nm(900,600,300).تم فحص تركيب كل من سبيكة واغشية CIT المحضرة بظروف مختلفة بواسطة تقانة حيود الاشعة السينية .XRD وقد اظهرت نتائج حيود الاشعة السينية ان السبيكة وجميع الاغشية الملدنة عند درجة حرارة تلدين K(673 and 473) كانت تمتلك تركيبا متعدد التبلور من النظام الرباعي (Tetragonal) بالاتجاه البلوري السائد (112)، في حين كانت الاغشية المحضرة في درجة حرارة الغرفة (300)K ذات تركيب عشوائي. اما دراسة خصائص سطح اغشية CIT بواسطة مجهر القوة الذرية AFM فقد بينت زيادة الحجم الحبيبي مع زيادة كل من درجة حرارة التلدين والسمك.واظهرت القياسات البصرية لاغشية CIT انها تمتلك فجوة طاقة مباشرة، اذ تزداد فجوة الطاقة بزيادة درجة حرارة التلدين لجميع الاغشية المحضرة، وكذلك تم حساب النفاذية والثوابت البصرية مثل معامل الانكسار ومعامل الخمود وثابت العزل بجزئيه حقيقي والخيالي ضمن مدى الاطوال الموجيةnm (600 - 2700) .واظهرت نتائج الخصائص الكهربائية للاغشية المحضرة على قواعد الزجاج ان التوصيلية الكهربائية المستمرة D.C كانت تمتلك حاملات شحنة من النوع الموجب، وانها تزداد مع زيادة درجة حرارة التلدين لجميع الاغشية المحضرة في حين كانت تقل مع زيادة السمك .وان لهذه الاغشية طاقتي تنشيط، اي انها تملك اليتين للانتقال الالكتروني.كما بينت ايضا نتائج تاثير هول ان الاغشية كانت تمتلك حاملات شحنة من النوع (p - type).في هذا البحث ايضا تم تصنيع خلايا شمسية من ترسيب اغشية CITعلى قواعد سليكونية مكونة من المفارق الهجينةSi/CIT) ) الملدنة بدرجات حرارة وسمـــك مختلفة، واخرى على قواعد مكونة من زجاجFTO , ITO للمفارق الهجينة ITO/ CdS/ CIT)) و(FTO/CdS/CIT)، وكذلك ITO/ZnO/CdS/CIT)) و(FTO/ ZnO/CdS/CIT) المرسبة بطريقة التبخير الحراري . تم قياس سعة الانحياز العكسي كدالة لفولتية الانحياز عند التردد الافضل 10)KHz) وبينت هذه النتائج ان المفارق من النوع الحاد، كما قلت السعة بزيادة جهد الانحياز العكسي وهبوط جهد البناء الداخلي بزيادة درجة حرارة التلدين .واظهرت دراسة خواص (تيار - جهد) في حالة الاضاءة للمفارق الهجينة المحضرة بان افضل مفرق لتصنيع خلية شمسية على القواعد السليكونية كان للمفرق المحضر بسمك 600)nm (بدرجة حرارة تلدين (673)K. اذ بلغت الكفاءة التحويلية (%1.8) وعند طلاء هذه الخلية بطبقة مضادة للانعكاس من مادة TiO2 بسمك 600)nm) ازدادت الكفاءة لتصل الى (2.4%). | CuInTe2 (CIT) alloy prepared by thermal evaporation technique then prepared thin film from this alloy on glass substrate of different thickness (300,600 and 900 ±20)nm and at different annealing temperature (473 and 673)K.The structure of the alloy and CIT films which prepared at different deposition condition are examined using x - ray diffraction (XRD) technique.XRD analysis show that the alloy and the films prepared at (473 and 673)K have polycrystalline structure of tetragonal type with preferred orientation[112],while films prepared at R.T(300)K show amorphous structure. CIT films morphology were studied using AFM techniques, the results show that increase in grain size with increase thickness and annealing temperature .The optical measurement show that CIT films have a direct energy gap and it increase the increasing annealing temperature ,the transmittance and optical constant such as refractive index ,extinction coefficient and the dielectric constant with both part real and imaginary within the wavelengths in the range (600 - 2700)nm were calculated too.Electrical properties results for films prepared on glass substrate as a function of thickness and annealing temperature show that the electrical conductivity D.C were p - type and it with increasing annealing temperature while it decrease with increasing thickness, all films have two activation energies with two mechanisms of transport of free carriers .Hall effect results show that all films were p - type.In this research, fabrication solar cells from deposition CIT films with different thickness and different annealing temperature on silicon substrate (Si/CIT) heterojunction and another deposition on FTO,ITO substrate to fabricated solar cell from (ITO/CdS/CIT) ,) FTO/CdS/CIT) heterojunction and (ITO/ZnO/CdS/CIT) , (FTO/ZnO/CdS/CIT) heterojunction by using thermal evaporation technique.The C - V measurements as a function of reverse bias voltage at frequency (10KHz) show that the heterojunctions are abrupt type, the capacitance decrease as reverse bias voltage increase and the value of built - in potential decrease with increasing annealing temperature. The current - voltage characterization study for heterojunction prepared under illumination shows that the solar cell which have optimum condition deposition on silicon substrate with the thickness 600nm at annealing temperature 673K, have best efficiency (1.8%) among other cells, and after coating this cell by antireflection coating (TiO2) with thickness (600)nm, the value of efficiency increase to(2.4%)

خصائص التفريغ الكهربائي لمنظومة بلازما المايكنترون (PM) للتيارات المستمرة ذات الاقطاب المستوية == Electrical discharge characterizations of dc - planar magnetron (PM) Plasma device

Author name: شيماء حسين عبد مسلم
Supervisor name: ابراهيم رمضان عاكول | محمد خماس خلف
General topic: Physics
Specific topic: Plasma Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: في هذا العمل, تم تصميم وتصنيع الماكنترون ذو الاقطاب المستوية لمنظومة الترذيذ بالبلارما وقد تم توليد المجال المغناطيسي للماكنترون بطريقتين , الاولى باستخدام ملف كهرومغناطيسي.والطريقة الثانية لتوليد المجال المغناطيسي هي باستخدام زوج من المغانط الدائمة .درست مميزات التيار - الفولتية لمسافات مختلفة بين الاقطاب ,ضغط الغاز, وتغير نسب خلط غاز الاركون الى غاز الاوكسجين وشدة مجال مغناطيسي مختلف .وقد بينت النتائج ان التفريغ ضمن منطقة التفريغ التوهجي غير الطبيعي. وان افضل مسافة بين الاقطاب هي 4.5 cm.وقد وجد ان تيار التفريغ يقل بزيادة نسبة غز الاوكسجين ويزداد بزيادة شدة المجال المغناطيسي.وقد تم الحصول على منحني باشن لمسافات بين الاقطاب مختلفة,ونسب خلط لغازي الاركون - الاوكسجين مختلفة , وشدة مجال مغناطيسي ومادة قطب مختلفة .كما تم دراسة تاثير المجال المغناطيسي على كفاءة التاين.تمت دراسة تاثير المجال المغناطيسي على معلمات البلازما باستخدام مجس لانكماير المفرد. وقد وجد ان درجة حرارة الالكترون(Te) تقل بزيادة ضغط الغاز والمجال المغناطيسي, كما لوحظ وجود درجتي حرارة للالكترون عند تسليط مجال مغناطيسي تبعا لمنشاها. بينما وجد ان كثافة الالكترونات تزداد بزيادة كلا من ضغط الغاز والمجال المغناطيسي.حضرت اكاسيد النحاس والالمنيوم والنيكل باستخدام منظومة ترذيذ البلازما بالماكنترون ذو الاقطاب المستوية للتيارات المستمرة على قواعد زجاجية بنفس الظروف (الفولتية المسلطة 1200 فولت,المسافة 4.5 cm , الضغوط تغيرت ما بين mbar (0.05 - 0.14) نسبة(9/1)Ar/O2 وB = 200Gauss).من القياسات البصرية وجدت ان اغشية CuO اظهرت النفاذية في نطاق 78 - 86٪ في حين انها كانت بين 82 - 91٪ و86 - 90٪ لل Al2O3 وNiO على التوالي. فجوة الطاقة البصرية انخفضت بشكل طفيف مع زيادة ضغط العمل، فاغشية CuO لديها فجوات الطاقة المباشرة (Eg) (تقل 2.35 - 1.95eV) انخفضت فجوة الطاقة Al2O3 من 4.2 eV الى 3.8 ، والفجوة NiO 4.1 - 3.9 eV)) عند زيادة الضغط mbar (0.05 - 0.14).اظهرت نتائج تحليل حيود الاشعة السينية ان بنية الاغشية CuO هو متعددة البلورات ذات تركيب احادي الميل الاتجاه المفضل في (110) و(111). بينما يظهر Al2O3 طبيعة عشوائية. وحددت الاغشية NiO ان تكون الطابع متعدد التبلور مع بنية مكعب على طول (111) و(101) التوجه. وعلاوة على ذلك، تم العثور على Ni2O3 بواسطة حيود الاشعة السينية.وقد تم دراسة مورفولوجية سطح اغشيه CuO، Al2O3، وNiO باستخدام مجهر القوة الذرية (AFM)، ومجهر الماسح الالكتروني (SEM) واظهرت النتيجة ان كل الاغشية لها حجم نانوي ، ويزداد الحجم الحبيبي مع زيادة ضغط العمل .وقد تم قياس حساسية الافلام CuO، Al2O3، وNiO لغاز NO2 في الهواء المحيط في نظام الاستشعار الغاز. تم اختبار جميع العينات بنسبة 3٪ NO2 والجهد التحيز (6 فولت).اقصى حساسية لCuO هي (43%)مع وقت استجابة سريع (11.7s) ووقت الاسترداد (17.1s) ووجد ان افضل درجة حرارة عمل للمتحسس 170oC. وحساسية NiO في الضغط الامثل ( mbar0.08) 11.86% مع زمن الاستجابة (47.7s) ووقت الاسترداد (35.1s) في افضل درجة حرارة عمل للمتحسس 180 درجة مئوية. بينما لا استجابة Al2O3لغازNO2 .تم داسة خصائص اغشية اوكسيد النيكل الالكتروماتيكية ,حيث وجد من القياسات البصرية باستخدام اللوكس ميتر ,ان ضغط العمل الامثل كان 0.08 ملي بار حيث تمتلك الاغشية المحضرة نفاذية اعلى في حالة التبيض، ومعامل امتصاص اكبر عند عكس القطبية المسلطة ، مقارنة مع ضغوط العمل اخرى. | In this work, a DC planar magnetron of plasma sputtering device has been designed and constructed. The magnetic field of magnetron generated by using two ways, firstly, electromagnetic coil. Secondly the magnetic field generated by pair of permanent magnets. The current - voltage characteristics have been studied at different inter - electrodes spacing, gas pressure, argon - oxygen mixture, and magnetic field strength. The result shown that the discharge is operating in the abnormal glow region. The optimum inter - electrode spacing was 4.5cm, and the discharge current decreased by increasing O2 percentage and increased by increasing magnetic field strength. Paschen curves have been obtained at different inter - electrodes spacing, argon - oxygen mixture, magnetic field strength and cathode materials. Also the effect of magnetic field on the ionization efficiency has been studied. The effect of magnetic field on plasma parameters are investigated by using a single Langmuir probe. It is found that the electron temperature decreases with increased working pressure and magnetic field, also when the magnetic field applied the probe measured two electron temperatures (Te) according to their origin. While electron density increased with both increasing working gas pressure and magnetic field strength Copper oxide, aluminum oxide, and nickel oxide thin films are prepared using dc - planar magnetron plasma sputtering system on the glass substrate at the same conditions( applied voltage (1200 volt) distance 4.5 cm working pressure varied between (0.05 - 0.14)mbar (9/1) Ar/O2 ratio and B=200 Gauss. From optical measurements have found that, the CuO thin films have showed transmittance in 78 - 86% range whereas it was in between 82 - 91% and 86 - 90% for the Al2O3 and NiO thin films respectively. The optical energy gap decreased slightly with increase working pressure, since CuO films have the direct energy gaps (Eg) (2. 35eV decreases to 1.95eV), Al2O3 band gap decreased from 4.2 eV to 3.8 eV , and band gap of NiO (4.1 to 3.9 eV) at pressure increased from 0.05 to 0.14 mbar. X - Ray diffraction analysis have showed that the structure of CuO films is polycrystalline with monoclinic structure and preferential orientation in the (110), and(111) directions. While Al2O3 shows amorphous nature. The NiO films are identified to be polycrystalline nature with cubic structure along (111) and (101)orientation. Furthermore, Ni2O3 is found by XRD. The surface morphology of CuO, Al2O3, and NiO thin films have been studied by using Atomic Force Microscope (AFM) and Scanning Electron Microscope (SEM). The result is showed that all film had nano size structure, and the grain size increased with increased working pressure.The sensitivity of CuO, Al2O3, and NiO films to NO2 gas in air ambient has been measured in gas sensing system. All samples are tested at 3% NO2 and bias voltage (6 volt). The maximum sensitivity of CuO is (43%) with the fast response time (11.7s) and recovery time of (17.1s) at optimal operating temperature 443.15 kelvin. And the sensitivity of NiO at the optimum pressure (0.08 mbar) is found 11.86% with the response time (47.7s) and recovery time of (35.1s) at optimum operating temperature 180 oC, While Al2O3 not response towards NO2gas. Electrochromic (EC) properties of nickel oxide films have been studied, They were characterized by optical measurements by using lux meter ,the optimizing working pressure was 0.08 mbar, since the prepared films have a higher transmittance in the bleached state, and larger absorptance when the opposite polarity was applied, compared to another working pressures.

الخواص التركيبية والبصرية والكهربائية لاغشية اوكسيد النيكل المحضرة بطريقة الترذيذ كمتحسس غازي == The structural, optical and electrical properties of NiO films prepared by RF - Sputtering as gas sensor

Author name: زينب طارق عبد الحميد
Supervisor name: قاسم عزيز محمد | محمد عبد النبي
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: The structural, optical, electrical, and gas sensing properties of nickel oxide have been studied. The structural properties of the deposited films were made using XRD, SEM and AFM. The NiO films have been prepared with different thicknesses (100, 150 and 200) nm on glass, Si and Al2O3 substrates, using RF - sputtering at 100°C substrate temperature. The electrical and optical parameters of the NiO films were characterized using Hall Effect and transmittance measurements.The X - ray diffraction result indicates that the films are of polycrystalline in nature with cubic structure. The grain size of the nanoparticales observed at the surface depended of films thicknesses, where 200 nm has smallest average grain size 85.5 nm and RMS increased with increasing of thicknesses.The optical characterization shows that the film has band gap that ranged in between 3.6 eV to 3.9 eV, the average transmittance of films was found to be ranged of 60% to 85% in the VIS - IR regions. The dark conductivity of NiO films has been studied as a function of film thickness, crystal structure transformation and temperature with particular regard to gas sensitivity in CO2, NO2, CO, NO and the ethanol vapor. The electrical properties were found to be dependent on the film thickness.I - V characteristics for NiO films at (air, vacuum, N2, O2andCO2) gases before and after annealing were investigation. It would appear from our result that the diminution of the dark conductivity after annealing may be due to the surface contaminations adsorbed on the surface of the NiO film during film preparation or from ordinary atmospheric air.The resistivity of the NiO thin films decreased with increasing of thicknesses, from 1.5x105 to 5.4x104 (Ω.cm), which is related to the increase of carrier concentration with film thickness. The results of measurements of NiO thin films show that these films have good conductivities and results obtained from Hall Effect indicate that the NiO films were (p - type).It was found that the sensitivity to other gases differs for different film thicknesses and working temperature. Furthermore, NiO films exhibits high and fast response to NO2 gas at 200°C, which makes it a promising candidate for a poisonous gas sensing.

تصميم وتصنيع طلاء بصري مضاد للانعكاسية متعدد الطبقات لمجمعات الطاقة الشمسية الحرارية ذات التزجيج الملون == Design and Fabrication of Optical Multilayer Anti - reflection Coating for Colored Glazed Thermal Solar Collectors

Author name: زينب ارحيم حسين الاسدي
Supervisor name: عبد الحسين خضير لطيف | امال محمد الحلو
General topic: Physics
Specific topic: Solar Energy Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: يلعب الجانب الجمالي للمجمعات الشمسية الحرارية دورا هاما في تكامل واجهات المباني ويستند المظهر الملون الى مبدا التداخل لطلاء الاغشية الرقيقة على الجانب الاخر من الغطاء الزجاجي . ان وجود طبقات متعددة للمرشحات البصرية التداخلية على المجمعات المزججة يمكن ان ينتج انعكاس ملون في المنطقة المرئية ولا يحدث المظهر الملون خسائر مفرطة للطاقة بينما ينفذ الجزء غير المنعكس في منطقة الاشعة تحت الحمراء القريبة داخلا على شريط الامتصاص لزيادة كفاءة المجمع الشمسي الحراري . تقدم هذه الدراسة فكرة بسيطة للحصول على تزجيج ملون لاخفاء اللون الاسود والانابيب الظاهرة وتموجات شريط الامتصاص المعدني للمجمعات الشمسية الحرارية والتي تعتبر عقبة اساسية في تكامل المجمعات الشمسية الحرارية كواجهات للمباني وذلك بتصميم طبقات متعددة لمرشحات بصرية تداخلية من خلال محاكاة نظرية ومن ثم تصنيع هذه التصاميم عمليا ومقارنة النتائج عمليا ونظريا . تـم توظيـف مواد عازلة ملائمـة مثـل ثنائـي اوكسيد السليـكون (SiO2)ذو معامـل الانكسار العالـي nH =1.47 ومغنيسيوم فلورايد (MgF2) ذو معمل الانكسار الواطيء nL =1.38 وبسمك ربع طول موجي (H) و(L) لمعامل الانكسار العالي والواطيء على التوالي . استخدام برنامج الماتلاب في جزء المحاكاة النظري والذي صمم لهذه الدراسة . تم تصميم نموذجين بصريين كما تم استخدام نوعين من القواعد الزجاجية . ان اول نموذج بصري هو HL//glass لقيمتين من الطول الموجي المستخدم للتصميم (0) = 558 نانومتر و700 نانومتر ومن 2 - 40 طبقة . تم استخدام نوعين من القواعد الزجاجية ، النوع الاول شريحة زجاج مجهرية ذات معامل انكسار 1.5131 استخدم في هذا النموذج البصري طولين موجيين للتصميم 0 = 558 نانومتر و700 نانومتر ، النوع الثاني من القواعد الزجاجية هو BK7 ذو معامل الانكسار 1.515 استخدم في هذا النموذج البصري عندما طول موجة التصميم 0 = 700 نانومتر . النموذج البصري الثاني LH//glass تم باستخدام قاعدة زجاجية لشريحة مجهرية ولطول موجة التصميم واحد وهو 0 = 558 نانومتر من 2 - 40 طبقة . هذه التصاميم صنعت عمليا باستخدام تقنية الترذيذ بالتردد الراديوي ذو المغناطيس المستوي ، عشر طبقات رسبت بالتعاقب على شريحة زجاجية مجهرية من (SiO2) ذو معامل الانكسار العالي (H) و(MgF2) ذو معامل الانكسار الواطيء (L) على التوالي للتصاميم البصريةHL//glass وLH//glass عند طول موجة التصميم 0 = 558 نانومتر . كذلك عشر طبقات رسبت على القاعدة الزجاجية BK7 للنموذج البصري HL//glass عند 0 = 700نامومتر ولكن عند استخدام القاعدة الزجاجية للشريحة المجهرية للنموذج البصري HL//glass عند 0 = 700 نانومتر رسبت 16 طبقة من هاتين المادتين العازلتين . اظهرت المحاكاة الحاسوبية السلوك البصري لهذه المرشحات من 2 - 40 طبقة ولاعداد فردية وزوجية من الطبقات مثل الانعكاسية المرئية (Rvis.) ، الانعكاسية الشمسية (Rsol.) ، اعظم قمة لمنحني طيف الانعكاسية في المنطقة المرئية (RMax.) ، النفاذية الشمسية (Tsol.) وعامل الجدارة (M) . عمليا تم حساب (RMax.) و(Rsol.av.) و(Tsol.av.) . ان التحدي في هذه الدراسة هو ايجاد افضل نموذج بصري يمتلك اقل انعكاسية شمسية (Rsol.) واعظم نفاذية شمسية (Tsol.) لزيادة كفاءة المجمع الشمسي الحراري وفي نفس الوقت الحصول على انعكاس ملون يكسب المجمعات الشمسية الحرارية التي تستخدم كواجهات للابنية جانب جمالي . لقد وجد عمليا ان التصميم البصري الثاني (L/H//microscopic glass slide) عند0 = 558 نانومتر يمتلك اقل (Rsol.) واعلى (Tsol.) من البداية عند طبقتين حتى الوصول الى الطبقة العاشرة والتي تمتلك (Rsol.) =18.56025 % و(Tsol.) = 81.33469 % لذلك يمكن اعتبار هذا النموذج هو افضل نموذج بصري يمتلك اعلى كفاءة شمسية حرارية ويظهر انعكاس ملون (اخضر) جيد . لكن يعتبر عمليا النموذج البصري الاول (H/L//microscopic glass slide) عند0 = 700 نانومتر هو افضل نموذج بصري يستخدم للتلوين . ان المرشحات البصرية التداخلية متعددة الطبقات تظهر في هذه الدراسة انعكاس ملون اخضر في المدى المرئي ونفاذية مقبولة ومنطقة مضادة للانعكاسية في مدى الاشعة تحت الحمراء القريبة . بالرغم من زيادة طول موجة التصميم(0) عمليا من 558 الى 700 نانومتر تبقى هذه المرشحات تظهر انعكاس ملون اخضر .نجحت هذه الدراسة منذ البداية في اظهار ان الطلاء الترذيذي متعدد الطبقات حقق المتطلبات التالية : ا - امتصاصية شبه صفرية .ب‌ - قمة انعكاسية لونية في المنطقة المرئية .ت‌ - نفاذية شمسية مقبولة . | An aesthetic aspects play an important role in facades integration buildings of the thermal solar collectors , the principle of the colored appearance is based on interference in the thin - films coating on the reverse side of the cover glass . The presence of multilayered optical interference filters on the collector glazing can produce a colored reflection in the visible region , the colored appearance should not cause excessive energy losses , while transmitting the non - reflected radiation in the near IR region entirely to the absorber sheet to increase the efficiency of the thermal solar collector . This study presents simple idea to get a colored glaze to hide the black color, and the visibility of tubes and corrugations of the metal sheet (absorber) of the thermal solar collectors which is considered the main obstacle to facade integration buildings of solar thermal collectors by designing a multilayer optical interference filters during theoretical simulation and fabricate these designs experimentally then compare the theoretical and experimental results . Appropriate dielectric materials, silicon dioxide (SiO2) of high refractive index nH =1.47 and magnesium fluoride (MgF2) of low refractive index nL =1.38 were employing with quarterwave thicknesses (H) & (L) for high and low refractive index layers respectively . In theoretical simulation part a matlab program has been used which was designed for this study . Two optical models were designed and two kinds of glass substrates were used . The first optical model is HL//glass , for two design wavelength values (0) 558 nm and 700 nm from 2 - 40 layers . Two types of glass substrate were used , the first one was microscopic glass slide substrate with refractive index 1.5131 , it was used in this optical model two types of design wavelength (0) = (558 & 700) nm , the second kind of glass substrates was BK7 (Borosilicate Crown) glass with refractive index 1.515 it was used in this optical model when the design wavelength 0=700 nm . The second optical model is LH//glass by using microscopic glass slide substrate for one design wavelength is 0= 558 nm and for 2 - 40 layers. These designs were fabricated experimentally by using RF planer magnetron sputtering technique , 10 layers for high refractive index (H) (SiO2) and low refractive index (L) (MgF2) were deposited alternately for the optical models HL//glass and LH//glass at 0= 558 nm on the microscopic glass slide . Also 10 layers were deposited on BK7 glass substrate for the optical model HL//glass at 0= 700 nm but by using microscopic glass slide substrate for the optical model HL//glass at 0= 700 nm there were 16 layers deposited from these two dielectric materials . The computer simulation exhibit the optical behavior of this filters from 2 - 40 layers and for odd and even numbers of layers such as visible reflectance (Rvis.), solar reflectance (Rsol.), maximum peak of reflectance spectrum curve (RMax.) in the visible region , solar transmittance (Tsol.) and merit factor (M) . Experimentally (RMax.) , (Rsol.av.) and (Tsol.av.) were calculated . The challenge in this study is to find the best optical model which has less (Rsol.) and larger (Tsol.) to increase the efficiency of the thermal solar collector and in the same time get the colored reflection to gain esthetic aspect for the thermal solar collectors which was used as building facades . It is found experimentally that the second optical model (L/H//microscopic glass slide) at 0= 558 nm have low (Rsol.) and high (Tsol.) from the beginning at 2 layers until reaching the 10 layer which has (Rsol.)= 18.56025 % and (Tsol.)= 81.33469 % , therefore this model can be considered as the best optical model which has higher solar thermal efficiency and exhibits good )green( colored reflection . But the first optical model (H/L//microscopic glass slide) at 0= 700 nm was considered experimentally the best optical model used for coloration . The multilayer optical interference filters in this study exhibit green colored reflectance in the visible range and acceptable transmission and antireflection region in near IR range . Despite the increase in design wavelength (0) from 558 nm to 700 nm . These filters experimentally remain exhibit green colored reflection . This study was succeeded at the first attempt to show that a sputtered multilayer coating can fulfilled the requirements

تراكيز النويدات الطبيعية والصناعية في نماذج بيئية مختلفة لمدينة العمارة - محافظة ميسان == Natural and Artificial Radionuclide Concentrations for different Environmental Samples in AL - Amara city - Missan Governorate

Author name: زهراء عبد الحسين اسماعيل السوداني
Supervisor name: خالد هادي مهدي العبيدي
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: الهدف من هذه الدراسة يتضمن جزئين الجزء الاول يتمثل بتقييم مستوى النشاط الاشعاعي الطبيعي والصناعي للعينات البيئية (تربة سطحية ,ومياه نهر دجلة , ومياه محطات التصفية ,ورواسب نهر دجلة) التي جمعت من مواقع مختلفة في مدينة العمارة - محافظة ميسان باستعمال تقنية مطيافية اشعة كاما مع كاشف الجرمانيوم عالي النقاوة (HPGe) ذي الكفاءة 40% وقدرة تحليل 1.8keV للطاقة 1.33MeV العائدة لنويدة الكوبلت - 60 وذلك لقياس الفعالية النوعية لليورانيوم - 238والثوريوم - 232 والبوتاسيوم - 40 والسيزيوم - 137 للوقوف على المستويات الاشعاعية, فضلا عن حساب مؤثرات الخطورة الاشعاعية لاشعة كاما (فعالية الراديوم المكافئة (Raeq),ومعدل الجرعة الممتصة في الهواء(Dɣ),والجرعة الفعالة السنوية للتعرض الخارجي (〖AEDE 〗_out) والداخلي (〖AEDE 〗_in),ودليل الخطورة الخارجي(Hex) والداخلي (Hin),ودليل الخطورة لاشعة كاما I_γ))) في النماذج البيئية المذكورة انفا.وقد بينت نتائج الدراسة الحالية ان معدلات الفعالية النوعية لليورانيوم - 238 والثوريوم - 232 والبوتاسيوم - 40 والسيزيوم - 137 ومعدلات مؤثرات الخطورة الاشعاعية لاشعة كاما في العينات البيئية كانت جميعها اقل من الحد المقبول به عالميا.اما الجزء الثاني من هذه الدراسة هو قياس تراكيز غاز الرادون في العينات البيئية (تربة سطحية ,ومياه نهر دجلة ,ومياه محطات التصفية ,ورواسب نهر دجلة ,وهباء الهواء) التي جمعت من مواقع مختلفة في مدينة العمارة - محافظة ميسان ,وذلك باستعمال تقنية كواشف الاثر النووي للحالة الصلبة نوع (CR - 39),فضلا عن حساب مؤثرات الخطورة الاشعاعية لغاز الرادون (محتوى الراديوم الفعال (CRa) ,و معدل الانبعاث الكتلي للرادون (EX(M)) ,و معدل الانبعاث السطحي للرادون (EX(S)) ,و مؤشر الفا (Iα) ,والرادون المذاب Cd)) ,و الجرعة الفعالة السنوية للرادون AEDw))) في النماذج البيئية المذكورة انفا.و بينت نتائج الدراسة الحالية ان معدلات تركيز الرادون - 222 في العينات البيئية كانت جميعها اقل من الحد المقبول به عالميا.يستنتج من هذه الدراسة ان بيئة مدينة العمارة هي ضمن الخلفية الاشعاعية الطبيعية . | The aim of this study includes two parts, the first part is to assessment level of natural and artificial radioactivity of environmental samples (surface soil, water of the Tigris River ,water filtering stations and sediments of the Tigris River) collected from various locations in AL - Amara city - Missan government using gamma - ray spectroscopy technique with High purity Germanium detector (HPGe) which has a photo peak relative efficiency of( ≥40 % ) and an energy resolution of (≤1.8 keV) for the 133 MeV gamma transition of 60Co to measure Specific activity concentration of 238U, 232Th, 40K and 137Cs, Also Evaluation of radiological hazard effects for Gamma ray (Radium Equivalent Activity (Raeq), Absorbed Dose Rate in Air (Dɣ), Annual effective dose outdoor (〖AEDE 〗_out) and Annual effective dose indoor(〖AEDE 〗_in), Hazard index outdoor )Hex( and Hazard index indoor) Hin (and gamma Index (I_γ)) In environmental samples listed above.The results of the present study have shown that the rates of Specific activity of 238U, 232Th, 40K and 137Cs and radiological hazard effects Rate for Gamma ray in environmental samples were all lower than the value of the global limit.The second part of this study is to measure the concentrations of radon gas in environmental samples (surface soil , water of the Tigris River, filtering water stations , sediments of the Tigris River and dust air) which collected from various locations in AL - Amara city - Missan government using Solid State Nuclear Track Detectors type (CR - 39), In addition to Evaluation of radiological hazard effects for Radon gas (Effective radium content (CRa), Mass exhalation rate for Radon ????????(????), Surface exhalation rate for Radon ????x(????), Alpha index (Iα), Radon dissolved )Cd) and Annual effective dose )AEDw)) In environmental samples listed above.The results of the present study have shown that the rates of radon - 222 concentration in environmental samples were all less than the global limit.We conclude from this study that the environment of Amara city is within normal background radiation.

تحضير المعقد السيراميكي (Ln2Ba2Zn3 - xMxTiOy) ودراسة بعض خواصه الفيزيائية (Ln=La,Nb) (X=0,1,2,3) (M=Ca,Mg) == Preparation of complex ceramic(Ln2Ba2Zn3 - xMxTi3Oy) and study of dielectric properties (Ln=La,Nb) (X=0,1,2,3) (M=Ca,Mg) (y=14,16)

Author name: رعد سعدون صبري
Supervisor name: خالد طه رسول | كاظم حسن الموسوي
General topic: Physics
Degree: Doctorate
Language: Arabic
University location: Baghdad
Key words:
  • المعقد السيراميكي (Ln2Ba2Zn3 - xMxTi3Oy) وخواصه العزلية
First pages:
Abstract: تم في هذا البحث تحضير المركبات السيراميكية Ln2Ba2Zn3 - xMxTi3Oy حيث (Ln=La,Nb) و(X=0,1,2,3) و(M=Ca,Mg) بطريقة التفاعل الصلب باستخدام المواد الاولية (La2O3,Nb2O5, BaCO3,ZnO,CaCO3,MgO,TiO2). تم وزن المواد وخلطها باضافة الكحول وتجفيفها بعدها تم حرقها حرقة اولية بدرجة حرارة (950oC) لمدة (18h) بعد ذلك تم طحنها وخلطها مرة ثانية واعادة حرقها بدرجة حرارة (1000oC) لمدة (12h) بعد ذلك تم طحنها وكبسها باضافة (PVA) كمادة رابطة على شكل اقراص ذات قطر (1cm) حيث تم تلبيد هذه الاقراص بخمس درجات حرارة تلبيد (1050,1100,1150,1200,1250)oC ولكل درجة حرارة تم التلبيد بخمس ازمان (2,4,6,8,10)hعدا درجة حرارة تلبيد (1250oC) حيث تم التلبيد بثلاث ازمان (2,4,6)h. بعد انتهاء عملية التلبيد تم اجراء فحص حيود الاشعة السينية للمركب (La2Ba2Zn2Ca1Ti3O14) والمحضر بدرجتي حرارة تلبيد وكذلك لمركبات (La2Ba2Zn3 - xCxTi3O14)لقيم (X=0,1,2,3).وتم قياس الكثافة الظاهرية والمسامية الظاهرية لكافة النماذج المحضرة باستخدام طريقة ارخميدس ثم تم دراسة التركيب المجهري لها باستعمال المجهر الضوئي بعد اجراء عملية الصقل لسطوح هذه المواد. وكذلك تم دراسة الخواص الكهربائية لهذه المركبات والمتضمنة كل من قياس ثابت العزل الكهربائي ومعامل الفقد العزلي وظل زاوية الفقدان والتوصيلية الكهربائية المتناوبة ومخططات كول - كول وكذلك المقاومية الكهربائية والتوصيلية الكهربائية المستمرة وقياس متانة العزل. واظهرت نتائج حيود الاشعة السينية ان هذه المركبات لها تركيب من نوع بيروفسكايت المكعب وان مركبات( La2Ba2Zn3 - xCaxTi3O14) تحوي ايضا الطور (Ba2Ti9O20) عدا المركب( ( La2Ba2Zn2CaTi3O14 فله طور واحد هو المكعبي. ومن خلال الصور المجهرية الماخوذة لسطوح النماذج تبين ان الحبيبات تبدا بالتقارب من بعضها البعض على حساب المناطق غير المتفاعلة والفجوات وان المقاس الحبيبي يزداد مع زيادة درجة حرارة وزمن التلبيد .بينت النتائج ان الكثافة الظاهرية وثابت العزل والمقاومية الكهربائية ومتانة العزل تزداد مع زيادة كل من درجة حرارة وزمن التلبيد لكافة المركبات وان جميعالنماذج قد انصهرت بشكل تام عند درجة حرارة تلبيد (1250oC) عدا(La2Ba2Zn2CaTi3O14 ) و( Nb2Ba2ZnCa2Ti3O16 ) و( Nb2Ba2Zn3Ti3O16 ) التي انصهرت بدرجة حرارة تلبيد (1300oC). وان كل من المسامية الظاهرية ومعامل الفقد العزلي وظل زاوية الفقدان والتوصيلية الكهربائية المتناوبة والمستمرة وزمن الاسترخاء انخفضت قيمها مع زيادة درجة حرارة وزمن التلبيد. وبشكل عام فان اعلى قيمة لثابت العزل والمقاومية واقل قيمة لظل زاوية الفقدان والفقد العزلي والتوصيلية الكهربائية المتناوبة والمستمرة وزمن الاسترخاء (τ1) واعلى قيمة لمتانة العزل لمركبات( La2Ba2Zn3 - xCaxTi3O14 )تكون عند (X=1) وكذلك فان هذه النسبة لهما اعلى استقرارية لثابت العزل مع الحرارة ,بينما لمركبات(Nb2Ba2Zn3 - xCaxTi3O14)نجد ان اعلى قيمة لثابت العزل والمقاومية الكهربائية واقل قيمة لظل زاوية الفقدان والفقد العزلي والتوصيلية الكهربائية المتناوبة والمستمرة وزمن الاسترخاء واعلى قيمة لانهيار العزل تكون عند (X=2). واقل توصيلية كهربائية مستمرة واعلى قيمة لانهيار العزل تكون عند (X=0) واقل قيمة لظل زاوية الفقدان بشكل عام تكون عند(X=3) واقل قيمة للتوصيلية الكهربائية المتناوبة ومعامل الفقد وزمن الاسترخاء تكون عند (X=1). ولمركبات( Nb2Ba2Zn3 - xMgxTi3O16 )نجد ان اعلى قيمة لثابت العزل تكون عند (X=0) واعلى قيمة للمقاومية واقل قيمة للتوصيلية المستمرة واعلى قيمة لانهيار العزل تكون عند (X=1), واقل قيمة لظل زاوية الفقدان ومعامل الفقد العزلي والتوصيلية الكهربائية المتناوبة وزمن الاسترخاء تكون عند (X=3). وكذلك بينت نتائج القياسات الكهربائية ان كل من ثابت العزل الكهربائي وظل زاوية الفقدان ومعامل الفقد العزلي تقل مع زيادة التردد وتبدا بالاستقرار بعد تردد (~10KHz) وان التوصيلية الكهربائية المتناوبة تزداد مع زيادة التردد. ومن خلال نتائج قياس تاثير درجة الحرارة ضمن المدى (30 - 200oC) على الخواص الكهربائية المقاسة عند تردد (100KHz) تبين ان ثابت العزل يكون شبة مستقر مع زيادة درجة الحرارة وان ظل زاوية الفقدان ومعامل الفقد العزلي والتوصيلية المتناوبة تزداد مع زيادة درجة الحرارة للنماذج المقاسة. وبينت نتائج مخططات كول - كول ان جميع العينات المقاسة لا تخضع لنموذج ديباي للاسترخاء العزلي , وان هناك توزيع لزمن الاسترخاء من خلال وجود منطقتي استرخاء الاولى عند الترددات العالية والثانية عند الترددات الواطئة, وان الاستقطابية بشكل عام للمنطقة الاولى تكون اكبر من المنطقة الثانية, وان زمن الاسترخاء للمنطقة الاولى يكون اقل من المنطقة الثانية. | In present search it has been preparing a ceramic compounds Ln2Ba2Zn3 - xMxTi3Oy where (Ln=La,Nb) , (X=0,1,2,3) and ( M=Ca,Mg) were prepared by using solid state reaction method by using start materials (La2O3, Nb2O5, BaCO3,ZnO,MgO,TiO2), after the end of weight and wet mixing and drying process the mixtures were calsinted at ( 9500C) for (18h) after that the mixtures were crashing and mixing again then calsinted again at (1000 0C) for (1 cm) diameter with addition of (PVA) as a binder , then, these pellets were sintered at fire sintering temperatures (1050,1100,1150,1200,1250) 0C for fire sintering time (2,4,6,8,10) h except sintering temperature (1250 0C)were sintered at three sintering time (2,4,6)h. After the sintering process end, that it has been affirmating of the kind and accuracy of crystal structure for the compound La2 Ba2 Zn2 Ti3 O14, which has been sintered at tow temperatures, and the compounds Ln2 Ba2 Zn3 - x Cax Ti3 O14, where ( x = 0,1,2,3), by using the X - ray diffraction technique. It has been measuring the apparent density and apparent porosity for all prepared samples by using archamids method. After the eaching process, the microstructure of samples was studied by using photomicroscope. It has been studying the electrical properties for these compounds, that the electrical properties contained the measurement of each of dielectric constant, dielectric loss coefficient, tangent loss, alternating electrical conductivity cole - cole diagrams and also each of electrical resistivity and direct electrical conductivity and dielectric strength. The results of X - ray diffraction showed that compounds has a cubic peroveskait structure and the compounds La2 Ba2 Zn2 Ti3 O14 including Ba2Ti9O20 phase, except La2 Ba2 Zn2Ca Ti3 O14 has pure cubic phase, through microscopic images captured from samples surfaces it showed that grains start in convergence with each other up on the interest of unreactive areas and gaps,and grains size increasing with temperature and time of the sintering. The results have been showed that the value of each of apparent density, dielectric constant, dielectric resistivity and dielectric strength were increased with temperature and time of sintering increase, for the whole compounds and all the samples were compeletly melted at sintering temperature (1250 0C) except La2 Ba2 Zn2 CaTi3 O14, Nb2 Ba2 ZnCa2 Ti3 O16 and Nb2Ba2 Zn3 Ti3 O16, were melted at sintering temperature of (1300 0C). also results showed that the apparent porosity, dielectric loss coefficient, tangent loss, alternating and direct electrical conductivity and relaxation time were decreased their valus with the increase of the temperature and time of sintering. Generally, the heights value of dielectric constant, resistivity and the lowest value of tangent loss, dielectric loss coefficient alternating ,direct electrical conductivity and relaxation time (t1) and highest value of dielectric strength for compounds La2Ba2Zn3 - xCaxTi3O14 being at (x =1) and also this ratio have highest stability for dielectric constant with temperature ( ) while for compounds Nb2 Ba2 Zn3 - xCax Ti3 O14 we found that maximum value of dielectric constant, resistivity and lowest value of tangent loss, loss coefficient, alternating and direct conductivity and relaxation time and maximum value of dielectric strength being at (x=2). For the compounds La2Ba2Zn3 - xMgxTi3O14 we found that the maximum value of dielectric constant ( at higher sintering temperature ) (T >1150 0C) being at (x=3) and the highest value of resistivity and lowest value of alternating and direct conductivity and higher value of dielectric strength being at (x=0) , Generally lowest value for tangent loss being at (x=3), and the lowest value of alternating conductivity, loss coefficient and relaxation time at (x=1). For compounds Nb2Ba2Zn3 - xMgxTi3O16,we found that highest value of dielectric constant being at (x=0) and highest value for resistivity and lowest value of direct conductivity and highest value of dielectric strength being at (x=1) , and lowest value of tangent loss , loss coefficient , alternating conductivity and relaxation time at (x=3). Also, results of electrical measurements showed that each of dielectric constant, tangent loss , loss coefficient were decreasing with frequency increasing and start to stable after frequency ( 10 kHz), and the alternating conductivity increases with the frequency increases.Through the results of temperature effect measurement within the range (30 - 200 0C) up on the electrical properties at frequency (100 kHz) , the results showed that the dielectric constant being semi - stable with temperature increasing and the tangent loss, loss coefficient and alternating conductivity increases with temperature increase for the measured samples.cole - cole diagrams results showed that all measured samples didn’t submit to Debye model of relaxation and there is a distribution for the relaxation time through the presence of two areas ;first relaxation at high frequencies and the second at low frequencies and polarization coefficient in general at the first area being higher than second area and relaxation time at first area being lower than second area .

الخصائص الفيزيائية لاغشية اوكسيد الخارصين المشوبة تشويبا مشتركا بالبورون والالمنيوم == Physical Properties of Aluminum and Boron co - doped Zinc Oxide Thin Films

Author name: رشيد هاشم جبار
Supervisor name: انوار حسين علي الفؤادي
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: في هذا البحث تم تحضير اغشية اوكسيد الخارصين النقي ZnO والمشوبة تشويبا مشتركا بالبورون والالمنيوم ( AZB) بنسب تشويب (2, 4, 6, 8 %)، اي [ZnO : (B 1%+Al 1%), ZnO : (B 2%+ Al 2%), ZnO : (B 3%,Al 3%), ZnO : (B 4%,Al4%)]. اذ تم تحضير الاغشية بطريقة التحلل الكيميائي الحراري بدرجة حرارة القاعدة مقدارها(450 ±10 oC) وسمك (150±5 nm) على قواعد زجاجية وسليكون مسامي من النوعين (n, p) بمقاومية مقدارها(0.05 - 0.1 Ω.cm) واتجاه بلوري (111). تم تصنيع مفارق هجينة من انواع : ( ((ZnO, AZB)/p - PS/Si, (ZnO, AZB)/n - PS/Si ، وتم تحضير طبقة السليكون المسامي بطريقة التنميش الكهروكيميائية والكهروكيميائي تحت تاثير ضوء الهالوجين على قواعد السليكون للنوعين (n, p) بكثافة تيار مقدارها (30 mA) وزمن مقداره (30 minutes) . تم دراسة طبوغرافية سطح الاغشية وللسليكون المسامي باستعمال المجهر الالكتروني الماسح (SEM)، مجهر نفاذية الالكترونات (TEM) ومجهر القوة الذري (AFM) فتبين ان التركيب السطحي للاغشية المرسبة هو تركيب نانوي يتناقص فيه الحجم الحبيبي مع زيادة نسب التشويب المشترك اذ بلغت قيمة اصغر حجم حبيبي 7.5 nm))، وان خشونة السطح تزداد مع زيادة التشويب المشترك وتتغير من(1.34 - 6.15 nm) ومن (6.4 - 12.12)للاغشية المرسبة على الزجاج والسليكون المسامي على التوالي، واظهر جهاز حيود الاشعة السينية (XRD ) ان اغشيية ZnO المحضرة النقية والمشوبة ذات تركيب متعدد التبلور ومن النوع السداسي المتراص (hexagonal wurtzite). تم دراسة الخصائص البصرية للاغشية المحضرة بوساطة قياس طيف النفاذية والامتصاصية عند درجة حرارة الغرفة لمدى طول موجي يتراوح من (300 - 1100 nm) تبين ان النفاذية البصرية للاغشية النقية (87 %) وانها تتناقص مع زيادة نسب التشويب، وظهر ان فجوة الطاقة البصرية تزداد بزيادة نسب التشويب حيث بلغت قيمة فجوة الطاقة البصرية للغشاء النقي (3.22 eV) وتصل الى (3.31 eV) عند التشويب بنسبة (8%). اظهرت القياسات الكهربائية ان الاغشية النقية والمشوبة من النوع السالب (n - type)، وتركيز حاملات الشحنة يزداد مع زيادة نسب التشويب المشترك. لاغشية المحضرة المرسبة على الزجاج والسليكون المسامي للنوعين (n, p) تم استخدامها في قياس التحسسية للغازين (NH3, NO2)، بدرجة حرارة الغرفة وبتراكيز (50, 100, 150, 200 ppm). اظهرت النتائج ان المقاومة الكهربائية للاغشية تتناقص مع زيادة التشويب بالنسبة للغاز (NH3) بسبب تفاعل الاختزال، لكنها تزداد مع زيادة التشويب بالنسبة للغاز (NO2) بسبب تفاعل الاكسدة. بينت النتائج ان تحسسية الاغشية المرسبة على السليكون المسامي تكون اكبر من تحسسية الاغشية المرسبة على الزجاج، وتكون تحسسية الاغشية المرسبة على السليكون المسامي نوع (n) اكبر منها في حالة السليكون المسامي لنوع (p). وبينت الدراسة ان زيادة تراكيز الغازات تؤدي الى زيادة التحسسية. | In this research, pure ZnO and (aluminum and boron) co - doped ZnO(AZB)thin films were deposited with various doping concentration(2, 4, 6 and 8 %),[ZnO : (B 1%+Al 1%), ZnO : (B 2%+ Al 2%), ZnO : (B 3%,Al 3%), ZnO : (B 4%,Al4%)]. The thin films have been prepared by Spray Pyrolysis's method at (450 ±10 oC) substrate temperature with (150±5 nm) thickness on glass and porous silicon (n & p) types with resistivity (ρ= 0.05 - 0.1 Ω.cm) and (111) crystalline orientation. Heterojunctions of the types, such as : (( ZnO, AZB)/p - PS/Si, (ZnO, AZB)/n - PS/Si were also prepared. The porous silicon layer was prepared by the electrochemical and photo electrochemical etching under the effect of halogen light on silicon substrates for (n & p) types with current density (30 mA) for (30 minutes). The surface topography of the films and the porous silicon are studied by using the Scanning Electron Microscopy (SEM), Transmission electron microscopy (TEM) and the Atomic Force Microscopy (AFM). The study shows that the surface structure of the deposited films is nano structural and the value of the grain size decreases with the increase of co - doping where the minimum value of grain size was (7.6 nm). It was found that the surface roughness increased with doping from (1.34 to 6.15 nm) and (6.4 to 12.12) for a films deposited on glass and porous silicon substrate respectively, the x - rays diffraction showed the prepared doped and undoped ZnO thin films were of polycrystalline structural of(hexagonal wurtzite). The optical properties of the prepared thin films have been studied by measured the transmittance and absorbance spectrum at room temperature for the wavelength range (300 - 1100 nm), the transmittance was (87 %) for the undoped ZnO, the transmittance decreased with the co - doped increased. The value of the optical energy gap increased with the co - doped increase, the optical energy gap of the undoped film was found to be (3.22 eV) and increased to (3.31 eV) after doping with (8%) rate. The electrical measurements proves that doped and undoped thin films were n - type, and the carrier charge concentrations increased with the increase of co - doped rate. The prepared thin films deposited on glass and porous silicon (n & p) types have been used to the sensitivity measurements for (NH3, NO2) gasses at room temperature for the (50, 100, 150, 200 ppm) concentrations. The results shows that the electrical resistance for the thin films decrease with the increase of co - doped concentrations for (NH3) gas due to the reducing interaction, but it increases with the increase of co - doped concentration for (NO2) gas due to the oxidation interaction. The results show that the sensitivity of the thin films deposited on porous silicon substrates is higher than the sensitivity of the thin films deposited on glass substrates. The sensitivity of n - type porous silicon is higher than p - type porous silicon and glass substrate. The study shows that the increase of gases concentrations leads to increase of sensitivity.

دراسة طيفية لبعض الجزيئات ثلاثية الذرات باستخدام الطرق شبه التجريبية == Spectroscopic study of some tri atomic molecules using semi - empirical methodes

Author name: ذكرى كمال طه
Supervisor name: زياد عدنان صالح
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: تــم في هــذا البحث دراسـة الخـواص الطيفيه كجهد التاين , الالفه الالكترونيه وقيم الطاقه للمدارات الجزيئيه المشغوله بالالكترونات (EHOMO)، والفارغة من الالكترونات (ELUMO) وفجوة الطاقة وكذلك حساب الكهروسالبيه والصلاده الكيميائيه والنعومه (قابلية التفاعل). لبعض الجزيئات ثــلاثيـة الـــذرات نظـــريا , اذ ان الجزء النظري تمت دراسته من خلال استخدام برنامج كاوسين (Gaussian09 لبعض الجزيئات الثلاثية الذرات كجزيئة ثاني اوكسيد الكربون , الماء , الاوزون , هيدروكسيد الصوديوم , كبريتيد الهيدروجين وكلوريد المغنسيوم وذلك باستخدام برامج الكم شبه التجريبية التي تستغرق مدة زمنية للحسابات (PM3,PM6) قياسا الى الطرائق المتقدمه التي استخدمت في البحث هي طريقتا دوال الكثافة وهارتري فوك ( HF, DFT ) وباستخدام عناصر مجاميع اساس مختلفه . تم رسم الشكل الهندسي الفراغي الاكثر استقرارا اعتمادا على المحاور الداخلية (˚r,θ˚,Φ)f ومنها تم حساب اطوال الاواصر والزوايا المحصورة بينها وعزمي القصور الذاتي وثنائي القطب , ثوابت الدوران , الكتله المختزله , طاقة نقطة الصفر والاستقطابيه وطاقات المستويات الاهتزازية المنشطرة نتيجه لتاثير رينر - تيلر , ومضاعف - - ℓ وحساب الانتقالات بين المستويات الاهتزازيه كذلك حساب الطاقه الكليه للجزيئات كافه. كذلك تم حساب ترددات انماط الاهتزاز الاساسية للجزيئه ورسمها ضمن منطقة الاشعة تحت الحمراء من الطيف الكهرومغناطيسي . اذ توصلت الحسابات النظرية ان قيم مضاعف - ℓ - تزداد كلما انتقلت الجزيئات الى مستويات طاقة اعلى واما بالنسبة لحسابات تاثير رينر - تيلر وجد انها تسبب في انشطار مستويات الطاقة الاهتزازية بالنسبة لكل الجزيئات في المستويين الاهتزازيين (1,0,1) و(2,2,0) لهما مقدار الطاقة نفسه . اضافة الى جانب وجود مستويات طاقة اخرى منشطرة متقاربة في قيم طاقاتها . | The study of spectral properties such as ionizations potential, electron affinity, electronegative, chemical hardness, softness and electrophonic index from inharmonic potential energy curve, spectroscopic dissociation also calculated EHOMO, ELUMO and energy gap Eg by theoretical parts .this studies by using Gaussian 09 (Gaussian 09 Revisioon - A - 02 - SMP) program of some tri - atomic molecules such as (CO2, H2O ,O3 NaOH ,H2S , MgCl2 molecules ) using semi empirical quantum programs , By using semi - empirical (PM3,PM6) , density functional theory and Hartree - Fock (DFT ,HF) methods this by using different basis sets So after drawing structure optimization of molecules depending on the internal coordinate f(r,θo,φo), then calculate length of bonds and angles between it , moment of inertia, dipole moment for Molecules by quantum mechanics methods which, then we calculated the orbital energy values (EHOMO ) and (ELUMO) ; and from these values ; ionization energy was calculated for molecule by take absolute values to (EHOMO )A computational calculation is a valuable tool for estimating the (geometry, total energy, electronic properties, dipole moment, polarizability, electrostatic surface potential, vibration frequencies) of molecular structures. The IR spectrum of molecule primitive vibration frequency located within infrared region from spectrum ranged is obtained Then - ℓ - type doubling we conclude that values increasing with it exited to high levels , from Renner - Teller effect cause splitting of energy of or vibrational state (1,0,1) , (2,2,0) have the same energy

تقدير الحاصل النيتروني لبعض نوى النظائر المتوسطة نتيجة لتفاعلات البروتون وجسيمات الفا والنيوترون لمدى طاقة (E=10 - 50) MeV

Author name: رافت عبد الحسن مسلم
Supervisor name: خالد هادي مهدي العبيدي
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: للنظائر اهمية كبيرة في كثير من المجالات مثل المجالات البحثية والصناعية والطبية ومجالات اخرى. فبعضها يحتاج لنظائر بنصف عمر طويل او بنصف عمر قصير وحاصل نيتروني عالي او قليل للحالتين, لذا تضمن هذا العمل دراسة الخصائص النووية لتسعة عناصر متوسطة الاعداد الكتلية هي (Ca ,Sc ,Ti ,Ni ,Cu ,Zn ,Zr ,Nb ,Mo ), ولكل عنصر تم اختيار عشرة نظائر لذا تضمنت الدراسة 90 نظير اعدادها الكتلية بين (41 الى 96) , شملت هذه الدراسة حساب طاقة التفاعل, طاقة العتبة, الكتلة المختزلة, طاقة فصل النيوترون وطاقة الربط النووية لتفاعلات ,Ca(α,n)Ti Ni(α,n)Zn , Zr(α,n)Mo , ,Sc(p,n)Ti ,Cu(p,n)Zn Nb(p,n)Mo , ,Ti(n,n)Ti Mo(n,n)Mo ,Zn(n,n)Zn لنظائر العناصر اعلاه , كما تم حساب قدرة الايقاف باستعمال برنامج (SRIM 2013) ومن ثم حساب الحاصل النيتروني من المعادلات النظرية اعتمادا على احدث ما نشر من المقاطع العرضية للعامين (2010 ,2012 ), كما تم في هذه الدراسة استخراج مجموعة من المعادلات شبه التجريبية الموحدة لحساب المحصول النيتروني لهذه العناصر بشكل مباشر لنوعين من التفاعلات (α,n) و(p,n) والتي كل منها يشتمل على عشرة نظائر ليكون المجموع 60 تفاعل, نتائج الحاصل النيوتروني المحسوبة من هذه المعادلات اعطت توافقا جيدا مع القيم النظرية التي حسبت من المعادلات النظرية. هذه المعادلات مع ثوابتها وضعت ضمن برنامج ماتلاب صمم لهذا الغرض وبالاعتماد على نوع العنصر ونوع التفاعل وطاقة الجسيم الساقط لايجاد الحاصل النيتروني لاي نظير عدده الكتلي بين (40 - 100 ) لمدى طاقة يتراوح بين (15 - 50) مليون الكترون فولط. يمكن تطوير البرنامج ليشمل عدد اكبر من العناصر بنظائرها ولمديات طاقة اوسع. | Isotopes have a great importance in many fields such as research, industrial, medical and other. Some of them need isotopes with long half life or short half - life with high neutron yield or less for them. So this work included the study of the nuclear properties for nine medium elements (Ca, Sc, Ti, Ni, Cu, Zn, Zr, Nb and Mo), from each element we choose 10 isotopes, so the total are 90, their masses numbers were between (41 to 96), this study included the calculations of the Q - value reaction, threshold energy, reduced mass, separation energy of neutron and the binding energy for nuclear reactions , Ca(α,n)Ti , Ni(α,n)Zn , Zr(α,n)Mo , Sc(p,n)Ti , Cu(p,n)Zn , Nb(p,n)Mo , Ti(n,n)Ti Mo(n,n)Mo and Zn(n,n)Zn for the isotopes of the above elements, also we calculated the stopping power by using a (SRIM 2013), then the neutron yield was calculated from theoretical equations depending on most recent cross - sections (2010.2012), as well as this study focused on the extraction of a set of uniform empirical equations to calculate the neutron yield in directly for (α, n) and (p, n) reactions for these elements, and each of them includes 10 isotopes so the total reactions are 60. The result of neutron yield for these equations was in a good agreement with theoretical value which is calculated from the theoretical equations. These set equations with their coefficients were put within the MATLAB program, it was designed for this purpose and by depending on the element type, the type of reaction and incident particle energy to find the neutron yield for any isotope, their mass number is between (40 - 100) for energy range within the (15 - 50) MeV. This program can be developed to include a greater number of elements with their isotopes and for larger energy range.

التدريع الفعال لغرف الاشعة السينية التشخيصية == Effective Shielding For X - ray Diagnostic Rooms

Author name: حيدر صادق جعفر
Supervisor name: عبد الله احمد رشيد
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: وفقا لمصطلحات الاشعة السينية التشخيصية الطبية فان الاشعاع يتكون من الاشعاع الاساسي والاشعاع الثانوي .ان عملية وضع حواجز كالجدران التي تعترض الاشعاع الاساسي تدعى بالتدريع الاساسي في حين ان وضع حواجز للحماية من الاشعاع الثانوي تدعى بالتدريع الثانوي. في هذا العمل نتفحص حالة التدريع للحواجز الثانوية لغرفة التصوير الشعاعي للثدي والحواجز الاساسية لغرفة الاشعة السينية للصدر الرقمية في مستشفى الحسين التعليمي في مدينة كربلاء. باعتبار تصاميم غرف التصوير الشعاعي للثدي والاشعة السينية للصدر الرقمية ولمحة عن اجهزة التصوير الشعاعي المستخدمة فانه تم احتساب حمل العمل الكلي السريري لكل اسبوع وحمل العمل الكلي لكل مريض كما تم تحديد توزيعهما وفقا للفولتيات الاكثر استعمالا من خلال اختيار عشوائي للقيم التقنية السريرية الفعلية للــ mAs)) وقيم ذروة الكيلو فولت المناظرة لـ (2191) حالة تشخيص على مدى ثمانية اشهر لغرفة التصوير الشعاعي للثدي و(1402) حالة تشخيص على مدى اربعة اشهر لغرفة الاشعة السينية للصدر الرقمية. كمصدر لتدريع اشعاع الاشعة السينية التشخيصية فان تقرير المجلس الوطني للحماية من الاشعاعات والمقاييس رقم 147NCRP report No.147 )) وبرنامج الكمبيوتر (XRAYBARR) قد تم استخدامهما لحساب اسماك الحواجز الثانوية لغرفة التصوير الشعاعي للثدي والحواجز الاساسية لغرفة الاشعة السينية للصدر الرقمية . لغرفة التصوير الشعاعي للثدي فقد وجد ان حمل العمل الكلي في الاسبوع وحمل العمل الكلي لكل مريض كانتا تقريبا تساوي ما يحدده تقرير ان سي ار بي رقم 147 ( NCRP report No.147 ) لنفس عدد المرضى. الاسماك المطلوبة من الجبس والخشب كانا حوالي 4 ملم , 20 ملم على التوالي في حين ان الاسماك الفعلية الموجودة اعلى من هذه القيم. لغرفة الاشعة السينية للصدر الرقمية فقد وجد ان حمل العمل الكلي في الاسبوع كان بحدود 4.2 اضعاف ما يوصي به تقرير ان سي ار بي رقم 147 (NCRP report No.147 ) في حين ان حمل العمل الكلي لكل مريض كان بحدود خمسة اضعاف ذلك الذي يحدده تقرير ان سي ار بي رقم 147 ( NCRP report No.147 ) لنفس عدد المرضى لكل 36 ساعة عمل فعلية في الاسبوع لحالة ناشطة. السمك المطلوب من الرصاص كحاجز اساسي كان 2.7 ملم او 184 ملم من الخرسانة . في الواقع لم يكن هناك رصاص كحاجز اساسي بدلا عن ذلك فان مواد اخرى مثل الطابوق والخرسانة وجدت باسماك عالية كفاية لاستخدامها كحاجز تدريع اساسي.عظام الحيوانات استخدمت كاساس لاعداد اربعة نماذج من تركيبات مختلفة. هذه النماذج فحصت ضد اشعاع الاشعة السينية الاساسي عند جهود انبوب kvp 50 kvp 60 kvp 70 kvp 80 وkvp 90 باستخدام جهاز قياس معدل الجرعة minitracey. الانتقال النسبي , معاملات الملائمة باستخدام نموذج ارتشر Archer model , طبقة النصف ذات التوهين العالي ونسب التدريع لنماذج الانواع الاربعة حسبت وقورنت مع بعضها البعض. الكثافات وطبقات النصف ذات التوهين العالي عند kvp 50 وkvp 70 لنماذج الانواع الاربعة قورنت مع الكثافات وطبقات النصف ذات التوهين العالي لمواد التدريع الشائعة والمبتكرة. لقد وجد ان طبقات النصف ذات التوهين العالي لنماذج الانواع الاربعة افضل من طبقات النصف ذات التوهين العالي المواد الشائعة والمبتكرة. يستنتج من ذلك ان هذا النوع من المواد ستكون مفضلة كمادة تدريع ضد اشعاع الاشعة السينية الثانوية.

تاثير استبدال Sr على بعض الخواص الفيزيائية للمركب Ba2 - xSrxCa2Cu3O7+? == Effect of Sr Substitution on some of Physical Properties of (Ba2 - xSrxCa2Cu3O7+?) Compound.

Author name: حسين عبد الوهاب توفيق
Supervisor name: سوسن عبد الحسين مهدي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: لقد تم في هذه الدراسة تحضير المركب الفائق التوصيل Ba2 - x SrxCa2Cu3O7+δ ذا درجة حرارة حرجة عالية ولقيم x=0.0, 0.1, 0.2, 0.3, 0.5, 0.6 وباستخدام طريقة تفاعل الحالة الصلبة لغرض دراسة التغيرات الحاصلة في التركيب البلوري ودرجة حرارة التحول والخواص الفيزيائية والخواص العزلية.حيث تم فحص التركيب البلوري باستخدام تقنية حيود الاشعة السينية (XRD) واوضحت نتائج تحليل حيود الاشعة السينية ان جميع العينات للمركبات المحضرة لها تركيب معيني متعامد المحاورويمتلك اطوارتركيبية رئيسية عالية ومنخفضة مع تغير ثوابت الشبيكة ونسبة c/a والكثافة الكتلية والنسب الطورية نتيجة لزيادة تركيز Sr . اما قياسات السطح فتمت باستخدام المجهر الالكتروني حيث اظهرت صور المجهر الالكتروني الماسح ان العينات لها ترتيب طبقي متجانس ثم ان زيادة تركيز Sr ادى الى تغير الاحجام الحبيبية .واشارت النتائج الى ان هناك زيادة في محتوى الاوكسجين نتيجة زيادة نسبة Sr المضافة للمركب من خلال الزيادة في محور c والذي بدوره يؤثر على مقدار Tc للمركب .اما المقاومة الكهربائية فتمت دراستها باستخدام تقنية الاقطاب الاربعة وتم ايجاد درجة الحرارة الحرجة Tc للمركبات الفائقة التوصيل من خلال منحنيات اعتماد المقاومية الكهربائية على درجة الحرارة وقد تبين ان اعلى نسبة درجة حرارة حرجة للمركب الفائق التوصيل Ba2 - xSrxCa2Cu3O7+δ Tcoff=140k وباستخدام مقياس ال LCR فقد تم قياس ثابت العزل الكهربائي كدالة للتردد ضمن المدى من 50Hz الى 1MHz في درجة حرارة الغرفة. وقد وجد ان زيادة تركيز Sr يؤدي الى تغير في ثابت العزل الكهربائي .اما بالنسبة للخصائص الفيزيائية فاوضحت النتائج ان زيادة نسبة Sr ادت الى زيادة في المسامية يقابلها نقصان في التقلص الحجمي والكثافة.

ثابت العزل الكهربائي الفعال للسليكون العشوائي النقطي الكمي == Effective Dielectric Constant of Amorphous Silicon Quantum Dots

Author name: حسين خضير مجبل
Supervisor name: موفق كاظم عبد الرضا
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تركز هذا العمل على دراسة الحسابات النظرية لثابت العزل الكهربائي للسليكون العشوائي ذو النقاط الكمية ولحجوم تتراوح من (1,8 - 4,8) نانوميتر. الحسابات النظرية اظهرت بان قيم ثابت العزل الكهربائي للنقاط الكمية من السليكون العشوائي قد انخفضت. اعتماد ثابت العزل الكهربائي على التردد الساقط تحقق في هذه الدراسة. التصغير لشبه الموصل الصلب وصولا الى المقياس النانوي يجعل التاثير الكمي اكثر اهمية. وكنتيجة لذلك فان فجوة الطاقة لشبه الموصل النانوي تتوسع, وتصبح هنالك ازاحة لمستويات اللب, وتعديل لعرض الحزمة كذلك ازدياد الانفصال بين المستويات الثانوية داخل الحزمة. الاخماد لثابت العزل الكهربائي ينشا من تعزيز الربط البلوري وارتباط الالكترون مع الفونون بسبب نقائص عدد الاحداثيات الذرية وارتفاع نسبة السطح الى الحجم مع انخفاض حجم الجسيم النانوي. الاخماد في قيمة ثابت العزل الكهربائي يقودنا الى الازاحة نحو الطاقات العالية في حافة الامتصاص الفوتوني وكذلك الانبعاث الفوتوني والتي نجد تطبيقاتها في النبائط المايكروالكترونية والفوتونية ذات المقاييس النانوية. وبواسطة هذه الحسابات فقد اعتمدنا فكرة التقييد الكمي, حيث ان فجوة الطاقة لشبه الموصل تتطابق مع حجم النقاط الكمية من السليكون العشوائي. التركيب للجسيم النانوي قسم الى ثلاث قشرات (طبقات) والتي هي طبقة السطح وطبقة السطح الثانوي وطبقة اللب, حيث ان طول الاصرة وطاقة الاصرة وعدد الاحداثيات تختلف باختلاف القشرات. الاصرة تنكمش وطاقتها تزداد في طبقة السطح اما في طبقة السطح الثانوي فان الاصرة تنكمش قليلا ولكن طاقتها لاتتغير بينما في طبقة اللب فان كلا من طول الاصرة وطاقتها هي نفسها كما لو كان الحجم غير نانوي, بالاضافة الى ذلك في هذا الانموذج نجد ان انكماش طول الاصرة وزيادة طاقتها يزداد مع زيادة النقص في عدد الاحداثيات الذرية. استخدم لحسابات هذه الدراسة الحقيبة البرامجية Mathcad Professional 2015. | In this work, theoretical calculations of amorphous silicon quantum dots of (1.8~4.8 nm ) have been studied. The presented calculations shows that the dielectric constant of amorphous silicon quantum dots are suppressed. The frequency dependence of the dielectric constant was investigated. When the solid is miniaturized, quantum effects become, significantly important. As a results, the bandgap of a nanosemiconductor is extensions, the core levels will be shifted, the revision to width for band, and increasing split of sublevel inside the band. Dielectric extinction arises from the promotion of the binding energy to crystal and e - p reaction owing to coordination number diminution and the high in proportion of surface into volume with reduction of the size to the particles. A reduction for dielectric tendency to the brinks for photo - absorption and photoemission are a blueshifted, that might found applications in micro - electronic and photonic devices build on nanometric gauge. With the suggested calculations, effect of quantum confinement was a doped, the bandgap for nanosemiconductor could be governed with the size of amorphous silicon quantum dots. The structure of the nanoparticles was classified into three shells, i.e., the surface, the subsurface and the core, where the bond length, bond energy and coordination number are different. Bonds contract and the energy increase in the surface shell. In the subsurface shell, the only bond contract with a little but the energy unchanged, whereas the bond length and the bond energy are remain the same as the bulk in the core of particle. In this model the bonds contract and the energy increase with the increasing of atomic coordination number imperfection. All the calculations made in this work have been done using Mathcad Professional 2015.

فقدان الطاقة وايقاظ الجهد للبروتون في البلازما == Energy loss and wake potential of proton in plasma

Author name: بيداء محسن احمد
Supervisor name: خالد عبد الوهاب احمد | رياض خليل احمد
General topic: Physics
Specific topic: Plasma Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم دراسة صيغة قدرة الايقاف وايقاظ الجهد في البلازما الكلاسيكية باستخدام نماذج (Vlasove and Fried - Cont) بالاعتماد على دالة تشتت العزل ((∈(k,ω))) للايونات المتصادمة (المنفردة، العناقيد والعناقيد الثنائية) ولمعاملات مختلفة. يتضمن العمل ثلاث دراسات تعتمد على الايقاف وايقاظ الجهد. يصف هذا النموذج تاثير فقدان الطاقة للايونات المنفردة والجماعية على ثلاث منظومات مختلفة (Tokamak, Z - pinch and ICF). كذلك تم دراسة تاثير التركيب الهندسي لفقدان الطاقة وايقاظ الجهد للبروتون الساقط على نفس المنظومات السابقة ولحالات مختلفة. وتم برمجة كل المعادلات بواسطة برنامج (Fried - Conte.for.) بلغة فورتران 90. ان تحسين قدرة الايقاف في حالة البروتون المترابط اعطت نتائج افضل من البروتون المفرد بسبب ظهور تاثير التداخل في الحالة الاولى. وكذلك عند زيادة المسافة بين الجسيمة المقذوفة والهدف فان الايقاف يقل بسبب ما تعانية القذيفة من فقدان للطاقة في مسارها. كذلك عند تسقيط القذائف داخل وخارج كرة ديباي فان فقدان الطاقة يقل في حالة (R<λ_D) بسبب تاثير كولوم والعكس صحيح. تم دراسة تاثير الزوايا على فقدان الطاقة للبروتون عند تصادمه بزوايا (0, 30, 60, 90) وعلى ثلاث منظومات فلاحظنزايادة في فقدان الطاقة مع ازدياد قيمة الزوايا، وهذا يعني ان افضل ايقاف عند الزاوية (π⁄2). اعتمدت نظرية (Bohm and Pines) لغرض التحقق من تاثيرات الايونات المنفردة والجماعية على فقدان الطاقة في البلازما واستخدمت الطرق العددية في التكاملات والتقريبات التحليلية للسرع الواطئة والعالية باعتماد الحالات الكلاسيكية والكمية، فلوحظ اختلاف بالنسب المئوية بين المنظومات بسبب الاختلاف في الكثافة والسرعة الحرارية بينها. كما تم دراسة تاثير التداخل على فقدان الطاقة لمنظومات البلازما الثلاثة، وذلك لكثافات ودرجات حرارة مختلفة لهذه المنظومات، والتي اظهرت ان توزيعات الانماط الجماعية تقل مع درجة الحرارة وتزداد مع الكثافة. تم حساب ايقاظ الجهد للايونات المتصادمة في البلازما باستخدام كثافات مختلفة لمنظومات البلازما الثلاثة. فتبين وجود زيادة في ايقاظ الجهد مع الكثافة لكل منظومة. وتمت دراسة تاثير التركيب الهندسي واخذ شكل المثلث لمعاملات مختلفة (طول ديباي، ارتقاع المثلث وطول قاعدة المثلث) من تاثير طول ديباي على المنظومات الثلاث نجد ان فقدان الطاقة يقل مع زيادة طول ديباي. اخذنا حالات عديدة عند دراسة تاثير التركيب الهندسي على ايقاظ الجهد (قذيفتان متتاليتان، قذيفة تقود خلفها قذيفتان وقذيفتان تقود خلفها قذيفة) فوجدنا ان منظومة (Z - pinch) اكثر تماثلا من (Tokamak وICF). | In the present work the expression of the stopping power and wake potential in classical plasma are study by using Vlasove and Fried - Conte models depending on dielectric dispersion function (∈(k,ω)) for incident ions (single, clusters and diclusters) at different parameters. The work includes three studies depending on stopping and wake potential, this model describe the energy loss of individual ions and collective effect on three plasma systems (Tokamak, Z - pinch and ICF), where ICF is inertial confinement fusion. So study effect the geometrical structure of energy loss and wake potential of incident proton on the same three systems in different cases. All equation programed by Fried - Conte.for. written in Fortran - 90. The enhanced stopping power in case correlated proton best than the point - like because appear the interference effect in the first case. As well when increases the distance between incident projectile and target the stopping decreases, because the projectile suffer more collisions. So when incident projectiles (inside and outside) Debye sphere, energy loss decreases in case (R<λ_D) because of coulomb effect, vice versa. As well study effect the angles on the energy loss, where incident proton in different angles (0, 30, 60 and 90) on three systems note increases the energy loss with angle. This mean the best stopping at (π/2). Depending on Bohm and Pines theory to investigation the effect of individual and correlated ions of energy loss in plasma. Using the numerical method to integral, and analytical approximations for low and high velocities depending on the classical and quantum cases, note the different in scale percentage between systems because the difference in density and thermal velocity between them. The Interference effect in the energy loss for three plasma systems. By using different densities and temperature, show that the Contribution of collective modes decreases with temperature and increases with density. The wake potential of incident ions in plasma calculated by using different densities for three plasma systems. The wake potential increase with density for each system. As well study effect the geometrical structure and take the form of a triangle for different parameters (Debye length, height of a triangle and length of the triangle base). From effect Debye length (λ_D) for three plasma systems the energy loss decreases with increases the Debye length. Several cases taking in to account when study the effect of structure on wake potential, (Two - collinear projectiles, Projectile leading two behind and two projectiles leading one behind). Note the plasma system (Z - pinch) it’s the more systematic than (Tokamak and ICF) systems.

تحضير ودراسة الخصائص البصرية اللاخطية لمواد بلورية سائلة نيماتية مطعمة بجسيمات نانوية == Preparation and Study Non - linear Optical Properties of Nematic Liquid Crystal Materials Doped by Nanoparticles

Author name: بان علي ناصر غالب
Supervisor name: عبد العزيز عبيد موسى العكيلي | ياسين حسين كاظم
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: The present research include preparation the nematic liquid crystal materials doped with nano materials and studies the structural ,linear and nonlinear optical properties, for using it in field of nonlinear optics. Many properties of liquid crystal can be improved and enhanced by doping with nanoparticles materials, which are favorable for practical applications.Nematic liquid crystals (NLCs) (pure and doped) good materials for field of nonlinear optics (NLO) and its applications because of their large non - response nonlinearity and their extended spectral transparency.In this work, preparation of two compounds (ligands) of liquid crystal Schiff's bases derived from benzidine and hydrazine (Di - Cinnamylidene Benzidine) (B1) , (Bis - 4 - Methoxy - Benzyldene - Hydrazine) (B2) , and their complexes with bivalent ions (Cu, Ni, and Zn), take samples (M1B1,M2B1,M3B1, M1B2,M2B2 and M3B2) nanoparticles materials respectively, were carried out. As well as thin films of solutions of two materials (Di - Cinnamylidene Benzidine) and (Bis - 4 - Methoxy - Benzyldene - Hydrazine) and their complexes have been deposited on glass substrates, the samples prepared from solutions via spin - coating method at (10 - 3 M).The ligands and their complexes have been characterized by using FT - IR spectra and polarized optical microscopy (POM) to study liquid crystalline behavior, which has shown that the compounds have liquid crystalline properties belong to enantiotropic nematic phase (bi case media).The crystal structure has been studied for all prepared samples by using X - Ray diffractometer (XRD) ,and it has shown that ligands have polycrystalline structure. The complexes (M1B1,M2B1,M3B1 and M2B1) have monoclinic structure .The complex (M1B2 ) have orthorhombic structure, and the complex (M3B2) have amorphous structure.Atomic force microscopy (AFM) measurements for all samples show that the grain size ranging from (70 - 89) nm.The linear optical properties for all prepared samples have been studied, a study of UV - VIS spectra for different concentrations for each material dissolved in absolute ethanol solvent (9×10 - 5,8×10 - 5,7×10 - 5, 6×10 - 5, 5×10 - 5 and 4×10 - 5) M ,then study of absorption and transmission spectra for all prepared thin films at 10 - 3 M. The results showed when the concentrations increased the absorbance also increased for the same wavelength. The opposite relationship was observed for transmittance.The nonlinear tests calculated used (Z - Scan) technique in two cases (Close aperture) and (Open aperture) for obtain nonlinear refractive index coefficient (n2) and nonlinear absorption coefficient (β).The measurements performed using diode pump solid state laser operating at (473 nm) wavelength. The results showed an increase both of the nonlinear refractive index coefficient and nonlinear absorption coefficient, when increasing concentrations for all samples of liquid crystal material(solutions and thin films).The nonlinear refractive index increased linearly with the nonlinear phase shift .The thin films possess large linear and nonlinear optical properties as compared with liquid crystal as solution.The result imply that thin films of pure nematic liquid crystal and its complexes can be used as a potential medium for various optoelectronic applications including that in optical power limiting. The result show that the optical power limiting threshold is inversely proportional to the concentration of solution for all prepared samples.

تصنيع حراريات من البوكسايت العراقي == Refractories Manufacturing from Iraqi Bauxite

Author name: ایناس محي هادي
Supervisor name: محاسن فاضل هادي الكاظمي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: Iraqi raw Bauxite was fired at (1400) ̊C in order to produce calcined Bauxite. Chemical analysis and X - Ray Diffraction were carried out on the Iraqi Bauxite and calcined Bauxite to assess their ability for refractories production.The refractory mixture prepared from calcined Bauxite and raw Kaolin as a binder. The Kaolin was added in ratios of (10%, 20% and 30%). From the results of physical properties it was found that the mixture which has (10%) kaolin is the most suitable one for refractory production. Micro and Nano Zirconia and raw Zircon were added in ratios of (5%,10%,15% and 20%) in order to improve Iraqi Bauxite characteristics to be suitable for refractories production which are used in glass and metals industries.The samples were formed by semi - dry pressing with different load with the addition of potassium silicate in ratio of (10%) as a binder. The samples were formed with dimensions for (height × diameter) as : (50×25)mm2, (50×50)mm2, (1×50)mm2, (1×25)mm2 and (50×10)mm2. The samples were dried at room temperature for (24)hr, after that dried by electrical dryer at (110) ̊C for (8)hr. The refractories of (Bauxite - Zirconia) fired at (1400) ̊C and refractories of (Bauxite - Zircon) at (1500)̊C by a firing program with a soaking time for (2)hr.The test which were carried out are : (X - Ray Diffraction and SEM), Physical Testing : (Linear Shrinkage, Apparent Porosity, Water Absorption Ratio and Apparent Density), Mechanical Testing : (Bending Strength, Compressive Strength, Diametrical Strength, Hardness and Surface Roughness), Thermal Testing : (Thermal Conductivity, Specific Heat Capacity, Thermal Expansion Coefficient, Thermal Shock Resistance and Differential Thermal Analysis (DTA). And last test was Chemical Resistance to molten glass.According to (XRD) and (SEM) results the refractories consist mullite phase and glass phase. Refractories of (Bauxite - Nano Zirconia) have the lowest linear shrinkage and highest apparent density then the refractories (Bauxite - Micro Zirconia) and (Bauxite - Zircon).The adding of micro or Nano Zirconia or raw Zircon led to decrease the linear shrinkage and increase apparent density because of the increasing of pure ceramic materials in account of raw ceramic materials. The increasing of apparent density associated with decreasing of apparent porosity and water absorption ratio.The improving of the mechanical properties by adding Zirconia and raw Zircon causes by the high toughness of the additive ceramic materials which is also prove the crack pining mechanism with ceramic particles practically.The increasing of apparent density in susceptible the thermal properties therefore the thermal conductivity, specific heat capacity and thermal expansion coefficient were decreased while thermal shock resistance was increased, according to properties of the additive ceramic materials. The results of the differential thermal analysis shown that the refractories of (Bauxite - Zirconia) have a high thermal stability in the test temperaturerange (25 - 1500)̊C, except some process that return to raw Kaolin, endothermic process were moisture loses and crystalline water loses and exothermic process at (900 - 1000)̊C as mullite phase formed from the reaction between (SiO2) and (Al2O3).The increasing of chemical resistance causes from adding of Zirconia and raw Zircon to the prepared refractories, which led to reduction of wetting ability and the amount of molten glass which adhesive with refractories, on the other hand forbade the chemical reaction between the molten glass and the refractories.

حسابات نظرية لحاصل ترذيذ المواد الاحادية الذرة ذات الصلة بجدار الاندماج النووي بسبب قصفها بالايونات الخفيفة باستخدام برنامج TRIM == Calculation of Sputtering Yield of Nuclear Fusion Wall to Relevant Mono - atomic Materials Due to Light Ions by using TRIM program

Author name: ايناس احمد جواد العتابي
Supervisor name: مصطفى كامل جاسم | هدى مجيد توفيق
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم اجراء موسعة لحاصل الترذيذ من خلال قصف اهداف من ( البريليوم ,البورون ,الكربون , الالمنيوم , السليكون , التيتانيوم , كروم , الحديد , كوبلت , النيكل , النحاس , زركونيوم , تنجستن , رينيوم ) بواسطة ايونات البلازما( الهيدروجين والديوتيريوم والتريتيوم والهليوم) . باستعمال كود مونتي كارلو TRIM 2013 تشتمل الحسابات تغيير معلمات الادخال : مثل طاقة ايونات بلازما( الهيدروجين والديوتيريوم والتريتيوم والهليوم) , وزاوية قصف هدف من العناصر ,و تغير الكتلة الذرية للايون الساقط, وعدد الايونات الساقطة , وعرض الهدف , والعدد الذري للهدف وطاقة ربط السطح. هنالك العديد من النماذج الرياضية التي توضح تفاعل الايون مع المعدن , وكذلك العديد من برامج المحاكاة التي تصف هذا التفاعل .في هذه الدراسة قد تم التحقق من تفاعل الايونات الاربعة الخفيفة مع خمسة عشر عنصر التي تستعمل او تكون مرشحة للاستعمال في مفاعلات الاندماج النووي من قبل هذه النماذج. كذلك باستخدام برنامج TRIM العالمي لمحاكاة حاصل الترذيذ. ان حاصل الترذيذ للعناصر تزداد تدريجيا مع زيادة زاوية السقوط وصولا الى الحد الاقصى ثم تنخفض . كما انه يزداد بزيادة طاقة الايونات الساقطة وكتلة الايون . لكنه يقل مع زيادة الكتلة الذرية للهدف . يكون حاصل الترذيذ للبريليوم هو الاكبر واصغر حاصل ترذيذ يكون تنجستن , رينيوم . كذلك يقل حاصل الترذيذ مع زيادة العدد الذري للهدف . ان تغير طفيف في طاقة ربط سطح الهدف تؤدي الى تغير كبير وملحوظ في حاصل الترذيذ. بينت النتائج ان حاصل الترذيذ يعتمد مباشرة على معلمات الادخال . وان اي تغير في تلك المعلمات يؤدي الى تغير في حاصل الترذيذ.تم تطبيق نماذج رياضية لبيانات برنامج المحاكاة من اجل الحصول على افضل ملائمة لحاصل الترذيذ مع زاوية السقوط وطاقة الايون . تم جدولة قيم الملائمة لمعلمات جميع المواد احادية الذرة التي تفاعلت مع الايونات الخفيفة .عمل ملائمة لبيانات حاصل الترذيذ تم باستعمال متعددة الحدود التي توفرها حزمة برامج Matlab وIor بواسطة IGOR.Pro .رسمت نماذج مختلفة لحاصل الترذيذ صيغة Sigmund وثلاث معادلات شبه تجريبية تسند على صيغة Sigmund.كما تم مقارنة بين نماذج الترذيذ. كما عرض رسم mesh لحاصل الترذيذ مقابل طاقة الايون وزاوية السقوط ,تم مقارنة بيانات المحاكاة مع بعض البيانات التجريبية عن طريق الرسم | Extended calculations for sputtering yield for bombarded (4Be, 5B, 6C, 13Al, 14Si, 22Ti, 24Cr, 26Fe, 27Co, 28Ni, 29Cu, 40Zr, 42Mo, 74W, 75Re) targets by (H+, D+, T+, He+) ions plasma are accomplished using a Monte Carlo code TRIM 2013.The calculations include changing the input parameters : the energy of (H+, D+, T+, He+) ions plasma, the hitting target angle, the atomic mass of incident ion, the number of incident ions, the width of target ,atomic number of target and the surface binding energy of target . There are many mathematical models that illustrate the interaction of ions with metals, as well as several of the simulation programs which describes this interaction. In this study it has been verified the interaction of four light ions with fifteen elements that used or candidate for use in nuclear fusion reactors by these mathematical models. Furthermore, the global TRIM program also been used to simulate the process of sputtering. The sputtering yield of elements gradually increase with increasing incidence angle reaching to a maximum value and then starts to decrease.It also increase with increasing the ion energy and incident ion mass, While it decrease with increasing the atomic mass of target, The sputtering yield is the largest for the Beryllium target and is the lowest for Tungsten and Rhenium. The sputtering yield decrease with increasing the atomic number of target, A small change in surface binding energy of target (whether to increase or decrease ) leads to large and significant change in sputtering yield. The results show that sputtering yield is directly dependent upon the input parameters and any change in those parameters leads to a significant change in sputtering yield. Methodical models are applied for TRIM simulation data to fit the sputtering yield with incident angle and ion energy. The best - fit values of the parameters included in the formulae have been tabulated for all of the mono - atomic materials interact with light ions. The data of sputtering yield is fitted using to a polynomial provided by Matlab software package and (Ior ) by IGOR Pro. Comparison of sputtering yield models the Sigmund formula for sputtering yield and Three semi - empirical equations based on Sigmund’s formula are graphically plotted. Also mesh graphic showing sputtering yield vs. ion energy and incident angle, is illustrated.A comparison of TRIM simulation data with some experimental data was graphically carried out them. Moreover the influence of the surface binding energy and sputtering threshold energy is studied

بناء منظومة بلازما حاجز الجهد العازل الانتاج البلازما ودراسة تاثيرها على الدم باستخدام معالجة الصور == Construction of Plasma system of Dielectric Barrier Discharge to study its effects on the Blood using Image processing

Author name: ايمان عبد الستار الحميدي
Supervisor name: حامد حافظ مربط | علياء حسين علي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: In this study, construction the Dielectric Barrier Discharge system (DBD) to produce cold the Plasma was done. The electrical characteristic of the system were studied, the characteristic (Current - Voltages) curve and the effect of (frequency, the distance between electrodes, thickness of dielectric and type of dielectric material) on the value of the discharge current (I) and breakdown voltage have been studied. It was found that each of the discharge current and breakdown voltage increases with increasing gap distance, it was observed that the value of the breakdown voltage in the case of using a Teflon as a dielectric than is higher when using a glass as a dielectric. It is found that the discharge current and breakdown voltage increases with increasing gap space and the thickness of the dielectric material. Also, it's observed that the discharge current increases with increasing frequency of the applied voltage.The total number of prepared sample were (176) all are chosen for men they ages are between (20 - 40) years. The samples have been as follows (healthy, infected with high blood pressure, smokers and diabetes). The samples have been exposured to cold plasma for different periods between (2 - 50) sec. The image for all samples have been captured using Optical microscope. Every image have been studied with image processing programs by using (Mat lab - 2010).To extracted effect of Plasma on the texture of the Blood by using different methods .Histogram for First Class (First - Order Histogram) ,Gray level Co - occurrence matrix (GLCM) (Second - Order Co - occurrencematrix) and masks Law (Law's Mask) a statically features have been calculated for each method to study the effect of Plasma on the Blood texture.It is found that the Cold plasma effect on blood samples each of (smokers, diabetes ) It was Limited and does not appear Significant changein the image texture , and the Cold plasma effect on blood samples each of ( healthy , infected with high blood pressure ) can be seen through the change in the image texture .

دراسة تاثير تركيزانابيب الكاربون النانوية متعددة الطبقات على الخصائص الفيزيائية لمتراكبات الايبوكسي == Study The Effect of Multi Walled Carbon Nanotubes (MWCNTs) Concentration on Physical properties of Epoxy composites

Author name: الفت احمد محمود
Supervisor name: خالد رشاد الراوي | عدوية جمعة حيدر
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: Multi wall carbon nanotubes (MWCNTs) have excellent mechanical, electrical, and thermal properties. When MWCNTs incorporated in to polymer, that’s leads to better improvement in mechanical, electrical, and thermal properties result at low MWCNTs content. Due to the change in the electrical and mechanical properties MWCNTs / Epoxy composites have attracted significant research interest specially due to their potential for application in active control of strain sensing in composites structure or as strain sensor .Different type of MWCNTs, long and short (L - MWCNTs & S - MWCNTs) were used as reinforcement in epoxy resin with volume fraction ( 0.1,0.2, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 ,4.5, & 5%) respectively were used to prepare epoxy composites in order to examine and study some of their mechanical properties ( tensile strength, Young's modulus, flexural strength, fracture toughness, flexural modulus, Impact strength, and microhardness ), conductivity properties (AC conductivity, thermal conductivity), and morphology properties (SEM,FTIR). Direct mixing processes use to prepared (Epoxy / MWCNTs) composites, its involved use ultrasonic and magnetic stirrer bar mixing process to disperse the MWCNTs into the epoxy resin system. The results shown an improves in the mechanical, thermal, and electrical properties with increase volume fraction (0.1 to 2%), and then decreased with further increasing the MWCNTs content but stay higher than of pure epoxy. At (1.5%) we observed enhancement in tensile strength (28.19%, 15.74%) and Young's modulus (35.71%, 30.95%) for L - MWCNTs and S - MWCNTs respectively, and the higher enhancement in flexural modulus and flexural strength due to 2% vol. fraction of L - MWCNTs reached to (71.43 %, 102.26 %). The high impact strength and microhardness values result at (1. 5%L - MWCNTs) reached to (823.996%), and (41,102%) respectively.Better improvement in thermal conductivity and AC conductivity result at 2% volume fraction for both MWCNTs types compare with pure epoxy. The high thermal conductivity values due to L - MWCNT reached to (369.31%) or three times from the thermal conductivity of pure epoxy, compare with the value of enhancement for S - MWCNTs (183.39 %).Investigations of electrical properties of MWNT/polymer show a significant increase of electrical conductivity with the increase of the MWCNTs content. The AC. electrical conductivity of the sample with 2 % vol. fraction L - MWCNTs reached to four orders of magnitude higher than that of the pure polymer at a frequency range of (5E 4 to 5 E6) Hz, its present(9.66E - 7 to 5.78E - 5 Ω/cm) compare with the AC. electricalconductivity for S - MWCNTs ( 6.57 E - 11 to 2.24E - 5 Ω/cm) at same volume fraction and frequency range and with the electrical conductivity of pure epoxy (4.5E - 12 to 6.2E - 9 Ω /cm).Scanning Electron Microscope images illustrate the morphology of tensile fractured surface of EP/MWCNTs composites, although the morphologies of tensile fractured surface show ductile fracture with dispersed stresses in more than one crack propagation. Increased roughness and ductile behavior shown with increased volume fraction of MWCNTs. Above 2% vol. fraction of MWCNTs we shown increase the agglomeration that’s lead to decrease in properties of epoxy composites.

دراسة فقدان الطاقة لحزمة ايون الهيدروجين في الحمض النووي والماء == Studying Energy Loss of Hydrogen Ions Beam in DNA and H2O

Author name: اوفى زهير خضير
Supervisor name: خالد عبد الوهاب احمد | رياض خليل احمد
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: The energy delivered by a swift proton beam in materials of interest to hadron therapy (DNA and liquid water) is investigated in the present work. An explicit condensed - state description of the target excitation spectrum based on the dielectric formalism is used to calculate the energy - loss rate of the beam in the irradiated materials.The present work focus on : (i) Calculations of the energy loss, the probability P(E,T) of electronic excitation produced by proton, the average energy <E> transferred to the targets by electronic excitation, Partial Stopping Power, Effective Charge (PSPEC) using the dielectric function (PPA) to describe the excitation spectrum of DNA and H2O. Results show that the protons with energy between 0.05 MeV to 2.5 MeV are very efficient in producing secondary electrons in DNA and H2O, which are able to produce strand breaks and could be very effective for the biological damage of malignant cells.The ionization potential (the so - called I - value) is the most important material quantity in the calculation of the electronic stopping power of energetic ions (>1 MeV u−1) has been evaluated through Bethe’s formula and represents its main source of uncertainty at high energies, I DNA found to be 80.01 and I H2O .(ii) Calculation of shell correction of swift proton has been done by adopting (PPA) dielectric function of DNA and Liquid water targets. As well as calculations of shell correction using HO - GOS, KT - IM and FEG - ELF models, and compared the results come from three models.I(iii) Barkas effect, ( L1) and Bloch correction ( L2) for penetrating proton in DNA and Liquid water have been calculated using (KT, HO and FEG) moels, where the Bethe - Bloch parameters like, Barkas effect, Z 1L 1, Bloch correction, and Shell correction, ⁄ are unknown for DNA and liquid water.Results for protons impacting in the most representative biological targets (such as water or DNA components) show a very good comparison with experimental data. Because of its simplicity and great predictive effectiveness, the method can be immediately extended to any combination of biological target and charged particle of interest in ion beam cancer therapy.The equations of theoretical formulas for interesting physical quantities are programmed in a programs AuFa - H - DNA.for and AuFa - H - H2O.for , [see the flow charts in Appendix A] which contains some subroutines have been written in Fortran - 90 for the numerical calculations.

تصميم متحسسات الياف بصرية للكياسات البيئية == Design of Optical Fiber Sensors for Environmental Measurements

Author name: الهام كاظم اونيس
Supervisor name: محمد صالح مهدي | رياض خليل احمد
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: This study includes two main parts to design and study uniform and apodized fiber Bragg grating. The first part include simulation method by using optigrating 4.2 software in order to get the transmission and reflection spectrum for the FBG, also to give high accurate for analysis the characteristics of the FBG. The work of the software based on coupled mode theory which used the T - Matrix to solve its equations.The simulation study includes designed a uniform and Apodized fiber Bragg grating and studying the effect of increasing grating length on the reflectivity for them. The results show that, increasing grating length for uniform FBG for (L= 05 - - - 40mm) causes to increase the reflectivity to (99.99%) at (L=28mm), but increase in the reflectivity of side lobes which can reduce it by using apodization method in order to reduce the refractive index change towards the ends of the grating. After that, if the length is increased further, it is observed that the maximum reflectivity maintains the same value of (99.99%). The results for the effect of increasing grating length on the bandwidth show that, the value of the bandwidth decreased until achieved (0.01062nm) at grating length 28mm, then stay at this value for longer length.The simulation results for the Apodized FBG show the same behavior as the results of the uniform FBG but without side lobes. The effect of the increasing index modulation on the reflection spectrum was studied for the uniform FBG, from the results we observed that increasing in index modulation causes increasing in the reflectivity, where at the weak grating (1*10 - 4), the reflectivity was low and at the strong grating (4*10 - 4), the reflectivity was high.IIIIn addition, the study includes designing a sensor for a temperature and strain for uniform and apodized FBG. A uniform single temperature sensor is designed at grating length 10mm, the simulation result shows that, the center wavelength shifts with increasing temperature for (25 - 80˚C). The calculated temperature sensitivity for this sensor is (13.8 pm/˚C), Depending on the results we calculate the estimated temperature accuracy which is (± 0.33˚C).Again we design a sensor for the temperature but for array sensor, the results show that, the array sensor will not reflect Bragg wavelength at the same time when the temperature increasing because we take different value of grating period for each fiber in the array sensor. The temperature sensitivity for this sensor is (mean 13.76pm/˚C), and the estimated temperature accuracy is (mean ± 0.73˚C). From the comparison between the single and array sensors, we find that, the single FBG sensor system is more accurate compare to the array sensor, but in term of advantage FBG sensor array system have more advantage compare to the single FBG sensor.The simulation study for apodized FBG temperature sensor gives the same behavior as the uniform single FBG sensor but without side lobes. The results show that, there is no effect of increasing temperature on the bandwidth for the sensor. The strain sensor is designed for the uniform FBG at length 10mm; the results show that, increasing Bragg wavelength for applied strain for (200 - 2600με).The second part for the study includes designing and studying a temperature sensor by using experimental method. The experimental results show that, the reflection and transmission spectrum is at (1553.764nm) and increasing with increasing temperature from 25˚C to 80˚C. The measured temperature sensitivity for the sensor is (13.7 pm/˚C), while the theoretical is (14.2 pm/˚C). The estimated temperature accuracy for the sensor is calculated and is (± 0.32˚C).

تحضير ودراسة خصائص التراكيب النانوية لاوكسيد الانديوم وتطبيقاته التحسسية == Preparation and Characterization of In2O3 Nanostructure and its Sensing Applications

Author name: اسعد مجبل عباس
Supervisor name: رعد سعدون صبري | ابراهيم رمضان عاكول
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: في هذا البحث تم تحضير تراكيب نانوية لاوكسيد الانديوم (In2O3) النقي والمشوب بالفضة والنحاس بطريقتين : طريقة التبخير البسيط وطريقة الهايدروثيرمال. هذه التقنيات تعطينا مسحوق اوكسيد الانديوم بتراكيب نانوية متنوعة لذلك ظهرت الحاجة لترسيب هذه المساحيق على شكل اغشية سميكة لبناء نبائط ذات تراكيب نانوية, تبعا لهذه الحاجة فقد تم استخدام طريقة الطباعة على الشبكة لترسيب مسحوق اوكسيد الانديوم النانوي بشكل اغشية سميكةطريقة التبخير البسيط انجزت بدرجات حرارة تحضير مختلفة (700,800,900) مº وازمان تحضير مختلفة (1,2,3) ساعة بينما طريقة الهايدروثيرمال انجزت بازمان تفاعل مختلفة (3,4,5) ساعة ودرجات حرق مختلفة (300,400,500) مº ,كذلك تم تحضير اوكسيد الانديوم المشوب بالفضة والنحاس وبنسب تشويب (3,6,9)% في كلا الطريقتين.تم دراسة الخصائص التركيبية لجميع النماذج المحضرة باستخدام تقنيات حيود الاشعة السينية والمجهر الالكتروني الماسح ومجهر القوى الذرية . اظهرت نتائج الاشعة السينية ان اوكسيد الانديوم له تركيب متعدد التبلورمع قمم حيود تعود الى تركيب مكعب ووجد ان حجم التبلور يتناقص بعد التشويب بالفضة والنحاس. ان طريقة التبخير البسيط تعطينا تراكيب مختلفة (قضيب نانوي, طبقات نانوية, متراكبات نانوية) بينما طريقة الهايدروثيرمال اعطت (مكعبات نانوية,قضبان نانوية,تركيب شبيه الوردة). ان هذا التنوع في التراكيب يؤثر مباشرة في الخصائص الفيزياوية للاغشية المحضرة. من جانب اخر, وجد من نتائج فحص مجهر القوى الذرية ان خشونة السطح تزداد بعد التشويب بالفضة والنحاس. الخصائص البصرية لهذه الافلام اظهرت شفافية جيدة في المنطقة المرئية ووجد ان فجوة الطاقة تقل عندما يزداد الحجم الحبيبي وتقل ايضا" عند التشويب بالفضة والنحاس. حسابات التالقية الضيائية (PL) اظهرت انبعاث في المنطقة المرئية وتضمنت قمتين , لوحظت ازاحة للمنطقة الزرقاء فقط في طريقة الهايدروثيرمال عند زيادة زمن التفاعل دليل على نقصان الحجم الحبيبي, كذلك لوحظت ازاحة نحو المنطقة الحمراء لاوكسيد الانديوم المشوب بالفضة والنحاس.خصائص التيار فولتية (I - V) لكل الاغشية تشير الى سلوك شبه موصل وتبين زيادة غير خطية في التيار في الانحياز الامامي بينمزايادة قليلة جدا" بالاتجاه العكسي. تم دراسة التغير في مقاومة السطح بعد تعريضها لضوء بطول موجي (350 nm) من مصباح زينون وجميع الاغشية اظهرت انخفاضا" في المقاومة اثناء تعريضها للضوء, بالنسبة لاوكسيد الانديوم الغير مشوب اظهر النموذج ذو التركيب شبيه الوردة استجابية عالية للضوء بينما الظروف المثالية تعود للنموذج المشوب بالفضة بنسبة 9% والمحضر بطريقة التبخير البسيط.تم تحديد خصائص تحسس الغاز لاوكسيد الانديوم لغاز NO2 والايثانول كدالة للزمن وعند درجة حرارة 100مº. كل الاغشية اظهرت استجابية جيدة لكشف غاز NO2 والايثانول وبتراكيز مختلفة ppm ((50,100,150 بسبب تاثير القياس النانوي للنواتج التي حصلنا عليها من هذه الطرق. لوحظت استجابية جيدة لغاز NO2 على حساب الايثانول لكل النماذج. كل النماذج المحضرة اظهرت زيادة بالتحسسية بعد التشويب بالفضة والنحاس والظروف المثالية تعود للنموذج المشوب بالفضة بنسبة 9% والمحضر بطريقة التبخير البسيط. | In this research, indium oxide (In2O3) nanostructures (undoped and doped with Ag and Cu) were synthesized by two methods : - simple evaporation method and hydrothermal method. These methods give us In2O3 nano powders with different structures so we need to deposit these powders as thick films to build devices with nanostructures, according to this need screen print method was used to deposit In2O3 nano powders as a thick films. Simple evaporation method has been performed with different growth temperatures (700,800,900)ºC and growth time (1,2,3) hour while hydrothermal method performed with different reaction time (3,4,5) hour and calcination temperatures (300,400,500) ºC. Also Ag doped In2O3 and Cu doped In2O3 with different Ag and Cu concentration (3,6,9)wt% have been synthesized in both two methods. The structural properties of all prepared samples are characterized by XRD, SEM and AFM techniques. XRD results showed polycrystalline structure of In2O3 with a diffraction peaks related to the cubic phase structure and the crystallite size found to decreases after doping with Ag and Cu. SEM images showed that the simple evaporation method provided us with a variety in structure (Nano rods, nano layers and nano hetrostructure ), while the hydrothermal method produced (nano cubic, nano rods and flower like structures). This variety in structures directly affects the physical properties of the prepared films. On the other hand, it was found from AFM results that the surface roughness increased after doping with Ag and Cu. The optical properties of these films show a good transparency in the visible region and the energy gap was found to decreases with the increasing of grain size and after doping with Ag and Cu. The photoluminescence (PL) measurements showed visible light emission consist of two peaks, a blue shift was observed only in hydrothermal method with the increasing of reaction time indicating to decrease grain size, also a red shift was observed for In2O3 doped with Ag and Cu. The I - V characterization of all films indicate that semiconducting behavior and show nonlinear increasing in current at forward bias while very small increasing in the reverse bias. The change of the surface resistance under illumination of (350nm) Xe - lamp were studied and all films show decreasing in resistance due to illumination, for undoped In2O3 the sample with flower like structure show high response to light, while the optimal condition obtained is due to the sample doped with Ag 9% prepared by simple evaporation method with responsitivity (0.99). The gas sensing properties of In2O3 nanostructures for ( NO2 and ethanol) were investigated as a function of operation time at operation temperature 100 oC. All films show a good response for NO2 gas and ethanol vapor detection for different concentrations (50,100,150) ppm due to the effect of nano sized products obtained by these methods. Higher response to NO2 gas upon ethanol was observed for all samples. All prepared samples showed increasing in sensitivity after doping with Ag and Cu and the optimal condition obtained is due to the sample doped with Ag 9% prepared by simple evaporation method with sensitivity 55% to NO2 gas and 25% to ethanol vapor .

تحضير ودراسة خصائص اوكسيد الخارصين ذو التراكيب النانوية وتطبيقاته في التحسس == Synthesis and Studying Characterizations of ZnO nanostructures and its Sensor Applications

Author name: اسامة عبد العزيز داخل الخفاجي
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم تحضير اوكسيد الخارصين بتراكيب نانوية مختلفة بوسطة تقنيات تحضير مختلفة : التبخير البسيط, طريقة كيميائية, طريقة هايدروثيرمال. هذه التقنيات لها عدة ميزات مفضلة مثل قلة الكلفة, لا تتطلب طاقة كثيرة, مكونة من اجهزة بسيطة وتكون امنة للبيئة وتعطينا نواتج بمواصفات عالية.كل هذه التقنيات تعطينا مسحوق اوكسيد الخارصين بتراكيب نانوية متنوعة لذلك ظهرت الحاجة لترسيب هذه المساحيق على شكل اغشية سميكة لبناء نبائط ذات تراكيب نانوية, تبعا لهذه الحاجة فقد تم استخدام طريقة الطباعة على الشبكة لترسيب مسحوق اوكسيد الخارصين النانوي على قواعد مختلفة. ان طريقة الطباعة على الشبكة هي تقنية بسيطة تستخدم لترسيب اغشية سميكة متجانسة مع التصاقية جيدة عند درجات حرارة قليلة.تم طباعة اغشية سميكة محضرة بطرق متعددة على قواعد متنوعة لاستخدامها في عدة فحوصات هذه الاغشية تم تسخينها الى 500 ˚C للتخلص من جميع المواد العضوية المستخدمة في هذه الطريقة. تم فحص هذه الاغشية السميكة بتقنيات مختلفة لدراسة خصائصها الفيزياوية كالتركيبية, البصرية والكهربائية. ان طريقة التبخير البسيط تعطينا تراكيب مختلفة (قضيب نانوي, مسامير نانوية, وردة نانوية, رباعي الارجل وشبيه الطائرة). الطريقة الكيميائية تنتج لنا طبقات هرمية نانوية من اوكسيد الزنك, بينما طريقة الهايدروثيرمال اعطتنا قضبان نانوية. ان هذا التنوع في التراكيب يؤثر مباشرة في الخصائص الفيزياوية للاغشية المحضرة. الخصائص البصرية لهذه الافلام اظهرت لنا شفافية جيدة وتعتمد بقوة على سمك الغشاء. كذلك فان حسابات معامل الامتصاص اكدت ان جميع الاغشية لها انتقال مباشر. ان حسابات التالقية الضيائية (PL ) اظهرت ازاحة زرقاء وزيادة في فجوة الطاقة مما يؤكد على القياس والتركيب النانوي الذي تم الحصول عليه. تم دراسة الفحوصات الكهربائية, قياسات الDC اظهرت ان اغشية اوكسيد الخارصين السميكة لها طاقتي تنشيط منخفضة وان هذه الاغشية لها مقاومية تتراوح بين (100 - 300 Ω.CM) بينما دراسة خصائص الI - V لجميع الافلام المحضرة اكدت سلوك شبه الموصل فاظهرت زيادة غير خطية في التيار في حالة الانحياز الامامي, بينما اظهرت زيادة قليلة جدا في الانحياز الخلفي.كذلك تم حساب معامل التقويم وعامل المثالية للاغشية المحضرة.تم بناء نبائط من مفرق اوكسيد الخارصين/السليكون (p - Si/n - ZnO) من اجل استخدامها في تطبيقات كمتحسسات للغازات وكواشف ضوئية, جميع الاغشية المحضرة اظهرت استجابية جيدة كمتحسسات للغازات وككاشف لاشعة UV.تم دراسة تغير المقاومية والتوصيلية للاغشية المحضرة لكواشف UV بعد تعريضها لضوء بطول موجي (370 nm) من مصباح زينون ذو قدرة واطئة (6 مايكرواط) وجميع الاغشية اظهرت انخفاضا في المقاومية وزيادة في التوصيلية اثناء تعريضها للضوء.بعد ذلك تم قياس تيار الاضاءة وتيار الظلام لنبائط n - Zno/p - Si لكل الظروف المحضرة وبانحياز امامي (0.1V) وباضائية (370nm) لقياس الاستجابية والكشفية، كانت الظروف المثالية لطريقة التبخير البسيط هي للاغشية المحضرة بمعدل جريان (200sccm) بينما للطريقة الكيميائية كانت افضل ظروف للاغشية المحضرة ب (PH=9). بينما حصلنا على افضل استجابية بواسطة الافلام المحضرة بطريقة الهايدروثيرمال.كل الاغشية السميكة اظهرت استجابة جيدة عند تعرضها لغاز الامونيا وغاز ثاني اوكسيد النتروجين عند درجة حرارة الغرفة لتراكيز مختلفة (100 - 250ppm) بسبب تاثير القياس النانوي للنواتج التي حصلنا عليها من هذه الطرق. تم ملاحظة انتقائية لغاز الامونيا على حساب غاز NO2 لجميع الاغشية المحضرة.افضل ظروف تحضير بطريقة التبخير البسيط كان للاغشية المحضرة بمعدل جريان 200sccm وافضل ظروف للطريقة الكيميائية للاغشية المحضرة PH=9 ياتي بعدها الاغشية المحضرة بطريقة الهايدروثيرمال، كذلك تم دراسة تاثير اضافة TiO2.تم تحديد افضل درجة حرارة لعمل المتحسس وقياس التحسسية عند تراكيز مختلفة ووجد ان افضل درجة حرارة لعمل المتحسسات تتراوح بين (200 - 250C0) وهذا يدل على ان التراكيب ذات القياس النانوي تساهم في تخفيض درجة حرارة عمل المتحسس ZnO. | ZnO nanostructures were synthesized with different techniques : - Simple evaporation, chemical and hydrothermal methods. These techniques have many preferable properties such as low cost, low power request, simple apparatus, and safety for environment with high quality products. All these techniques give us ZnO nano powders with different structures so a need to deposit these powders as thick films to build devices with nanostructures according to this need so screen print method was used to deposit ZnO nano powders on different substrates. Screen print method is a simple technique used to deposit homogenous thick films at low temperature with good adhesion.ZnO casting with different preparation methods were screen - printed on different substrates for several purposes and testing, and then heated to 500 C˚ to eliminate all the organic materials. The thick films were characterized with different techniques to study their physical properties such as structural, optical and electrical properties. The simple evaporation method provided us with a variety in structure (Nano rods, nano nails, nano flowers, tetrapods and plain - like). The chemical method produced hierarchal nano layers, while the hydrothermal method produced nano rods. This variety in structures directly affects the physical properties of the prepared films. The optical properties of these films show a good transparency depending on the thickness of the films strongly (2 - 6 µm) and the calculations of absorption coefficient indicate that all the films have a direct transition. The PL measurements for these films show a blue shift indicating an increasing in energy gap and the nano scale of the obtained structures. Electrical measurments was studied, the D.C measurements show that ZnO thick films have two low activation energies and the prepared thick films have a resistivity ranging between (100 - 300Ω.cm) while the I - V characterization of all films indicate that semiconducting behavior and show nonlinear increasing in current at forward bias as well as a very small increasing in the reverse bias. Also the ideality and rectifier factors were estimated and discussed. ZnO/Si devices for all conditions were built as a gas sensor and a photo detector. For UV detection the change of the surface resistivity and conductivity under illumination of (370nm) Xe - lamp with low power (6µW/cm2) were studied and all films show decreasing in resistivity due to illumination. Then the Iph and Id current were measured under bias(0.1 v) for n - ZnO/p - Si for all conditions to measured responsivity and detectivity, for simple evaporation method, the optimal condition obtained is due to films prepared with 200 sccm flowrate, while the optimal condition for chemical method was obtained due to films prepared with value of PH= 9. The best responsivity is due to the films prepared by hydrothermal method. All films show a good response for Ammonia and NO2 gases detection at room temperature for different concentrations (100 - 250 ppm) due to the effect of nano sized products obtained by these methods. Higher response to Ammonia gas upon NO2 gas was observed for all conditions.Also the effect of mixing TiO2 was studied. Sensitivity and operating temperature at different concentrations were measured and studied and found that the operating temperature range between (200 - 250C˚) indicating that nano size structures enhance in lowering the operating temperature for ZnO films.

تاثير اضافة بولي اثيلين اوكسايد على خصائص بعض البوليمرات في التطبيقات الطبية == Influence of Adding Polyethylene Oxide on Some Polymer Properties for Medical Applications

Author name: احمد شاكر حسين كحيط
Supervisor name: رحيم كعيد كاظم حسين المرشدي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تضمنت الاطروحة دراسة الخصائص الفيزيائية لبوليمر بولي اثيلين اوكسايد (PEO) باستخدام المذيب ثنائي ميثيل الفورماميد (DMF) باستخدام تراكيز مختلفة (0.1% - 0.8% ) (غم / مل) قبل وبعد اضافة بعض البوليمرات ومن هذه البوليمرات بوليمر بولي اثيلين كلايكول (PEG) والبوليمر بولي مثيل ميثاكريليت ( PMMA) باوزان مختلفة. وتم دراسة الخصائص الريولوجية والبصرية والميكانيكية والكهربائية للنماذج المحضرة السائلة والصلبة حيث : تم قياس الخصائص الريولوجية للعينات مثل (الكثافة واللزوجة القصية)، ثم تم قياس انواع اخرى من اللزوجة مثل اللزوجة النسبية , اللزوجة النوعية , اللزوجة المختزلة , اللزوجة الذاتية ، اما معدل اللزوجة للوزن الجزيئي ونصف القطر الجزيئي الفعال فقد تم حسابها نظريا.وكذلك تم قياس الخصائص البصرية مثل (الامتصاصية ومعامل الانكسار)، ثم من هذه الخصائص تم حساب الخصائص الاخرى مثل (النفاذية ، الانعكاسية ، ومعامل الامتصاص للموجات الكهرومغناطيسية ، وزمن العمر الطبيعي، ومعامل الرقة ، الانعكاس المولاري، الزاوية الحرجة وزاوية بروستر).وايضا تم قياس الخصائص الميكانيكية مثل السرعة للموجات فوق الصوتية والتي تم قياسها على تردد ثابت قيمته (25 كيلو هرتز) اما الخصائص الاخرى تم حسابها نظريا , مثل : معامل الامتصاص للموجات فوق الصوتية , زمن الاسترخاء , سعة الاسترخاء , الانضغاطية , معامل المرونـة الحجمي , الممانعة الصوتية النوعـــية .بالنسبة للخصائص الكهربائية تم قياسها مثل التوصيلة الكهربائية ، وبالتالي حسبت الخصائص الاخرى مثل التوصيلية المولارية ودرجة التفكك . وقد تم قياس كل هذه الخصائص لحالتين قبل وبعد الاضافة في درجة حرارة الغرفة .واظهرت النتائج ان الخصائص السابقة تزداد مع زيادة التركيز باستثناء اللزوجة الذاتية ، النفاذية، الانعكاسية المولارية، الزاوية الحرجة، الانضغاطية، التوصيلة المولارية ودرجة التفكك تتناقص مع زيادة التركيز.تم الحصول على نتائج جديدة لمزيج من البوليمر ولقد استخدمت هذه النتائج في جانب من التطبيقات الطبية ، والتي تضمنت الامتصاصية والنفاذية ، وكذلك من ناحية اخرى ، هناك جانب تم تطبيقه وهو ملاحظة تاثير اضافات البوليمرات على بكتيريا جلد الانسان عند استعمال ثلاثة انواع من البكتريا .حيث لاحظنا عدم تاثر البكتريا عند اضافة كل من بوليمر بولي اثيلين كلايكول وبوليمر بولي مثيل ميثاكريليت والمذيب ثنائي الميثيل فورماميد والمستحضر ( بصورة انفرادية) عند اخذ نسبة (1 : 1) لذلك تستخدم كمواد قابلة لامتصاص الاشعة فوق البنفسجية ولاتستخدم كمواد معقمة اما مايخص بوليمر بولي اثيلين اوكسايد فقد لاحظنا تاثر البكتريا به ولمسافة (15) ملم حيث يمكن استخدامه كمادة قابلة لامتصاص الاشعة فوق البنفسجية وكمادة معقمة ويعتبر هذا احد التطبيقات الطبية الجديدة ، لذلك هناك العديد من التطبيقات التجريبية في التطبيقات الطبية المختلفة التي تم الحصول عليها من هذه الدراسة ، مثال على ذلك : عندما نستعمل بولي اثيلين اوكسايد وكذلك عندما نضيف له بوليمر بولي اثيلين كلايكول والبوليمر بولي ميثاكريليت المثيل حيث تم اضافة المزيج الى ثلاثة انواع من مستحضرات التجميل ، وثلاثة انواع من مرهم المفاصل ونوعين من جل الشعر، وهذه المخاليط ادت الى تحسين الامتصاصية عن طريق زيادة امتصاص (الاشعة فوق البنفسجية ) وجعل الجلد اقل تهيجا.ونلاحظ كذلك ان فحوصات (FT - IR) للاطياف اظهرت عدم وجود تفاعل كيميائي بين ( (PEO الذي ووزنه الجزيئي (300000) ومضافاته حيث استخدمت تقنية اقراص (KBr)) لذلك.العلاقة بين الخصائص التي تمت دراستها والتطبيقات الطبية هو الفائدة من زيادة الامتصاصية وتقليل النفاذية حيث ان الفائدة في الاضافة لهذه المراهم للحد من امتصاص الجسم للاشعة فوق البنفسجية، فضلا عن خصائص الريولوجية التي تؤدي لزيادة اللزوجة للمراهم وبالتالي زيادة الكثافة ومعامل الانعكاس مما يقلل من نفاذية الاشعة (الاشعة فوق البنفسجية) للجسم، بالنسبة للخصائص الميكانيكية والكهربائية لوحظ تحسن كبير في هذه الخصائص التي يمكن استخدامها كبحوث وتطبيقات في المستقبل | The dissertation has included study of some physical properties of polymer polyethylene oxide (PEO) dissolved in Dimethylformamide (DMF) with different concentrations ranged from (0.1% - 0.8%) g./ml before and after adding Polymers such as polyethylene glycol (PEG ) and Poly(methyl methacrylate) (PMMA ) of different weights. The rheological, optical, mechanical, electrical properties for samples at prepared by liquid and solid have been studied and the study show : For rheological properties such as : (density and shear viscosity ),has been measured , then other types of viscosities are measured , such as : relative viscosity , specific viscosity , reduced viscosity , intrinsic viscosity. While for viscosity average molecular weight and effective molecular radius have been theoretically calculated. Also the optical properties had been measured such as ( absorbance and refractive index ), then from these properties were calculated optical parameters and optical constants such as ( transmittance, reflectance, absorption coefficient of electromagnetic waves, natural lifetime, coefficient of fineness, molar reflectance, critical angle and Brewster angle ). Also the mechanical properties of ultrasonic wave velocity at a constant frequency (25 kHz) has been measured and other properties were theoretically calculated such as : absorption coefficient of ultrasonic waves , relaxation time , relaxation amplitude , compressibility, bulk modulus , and specific acoustic impedance for ultrasonic waves. For the electrical properties have been measured such as electrical conductivity and other properties such as (molar conductivity and degree of dissociation) have been calculated after that.The results showed that previous properties have increment with the increase of concentration except reduced viscosity , transmittance , molar reflectance ,critical angle, compressibility, molar conductivity and degree of dissociation are decreasing with increasing of concentration . New results were obtained to a combination of polymer and these results have been utilized in the side of medical applications, which included the absorbance and transmittance, in the other hand, the effect of polymer addition on human skin has been applied according to a note , when using three types of bacteria . Where noticed the bacteria is not affected when adding each of the polymer (polyethylene glycol , Poly(methyl methacrylate)) , solvent Dimethylformamide and mixture when taking the ratio (1 : 1) individually , so it is used to absorb ultraviolet rays and not used as sterile . For polymer polyethylene oxide noticed effect on bacteria for distance (15) mm , where it can be used to absorb ultraviolet rays and sterile , this is one of the new medical applications , so there are many experimental applications in different medical applications obtained from this study, such as : The solutions of (PEO) , (PEO - PEG) and (PEO - PMMA) blends that have been added into three types of cosmetics, three types of ointment of joints and two types of hair gel , these blends enhance them by the increase of (UV) absorbance that makes less skin irritation. The (FT - IR) spectra showed that there was no interaction between (PEO) ( 300000 ) and all additives when it has prepared by (KBr) disks technique. The relationship between the properties that have been studied and medical applications in the usefulness increase absorbance and decreases transmittance that has to take advantage of it in the addendum to the ointments to reduce the body's absorption of (UV) rays , as well as rheological properties led to increase the viscosity of ointments and thereby increase the density and reflection coefficient which reduces the transmittance of (UV) rays to the body , for mechanical and electrical properties noticed a significant improvement in these properties, which can be used research and applications for the future

دراسة بعض خصائص فيرايت الاسبنل المحضر بطريقة السيراميك والسول جيل == Studying some Properties of Spinel Ferrite preparing by Ceramic and Sol - Gel Methods

Author name: اثير ابراهيم عبد علي الخفاجي
Supervisor name: كاظم جواد كاظم الشجيري
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: In this research three series of spinel ferrites samples where prepared which is copper - zinc ferrite with general formula (Cu1 - xZnxFe2O4), magnesium - zinc ferrite with general formula (Mg1 - xZnxFe2O4) and nickel - zinc ferrite with general formula (Ni1 - xZnxFe2O4) at (X) values ranging from 0.0 to 1.0, step of 0.2 where (X) represents the proportion of zinc in ferrite, using two preparation methods which is Conventional ceramic method and Sol - Gel method. Three sintering temperatures have been used which is (1000ºC), (1050ºC) and (1100ºC) to determine the effect of sintering temperature on the final specifications of the samples. (Network analyzer device) has been used to studding the microwaves absorption in the range of (X - band) with a frequency range (8 - 12.5 GHz). Also, X - ray diffraction analysis (XRD) has been used to determine the crystal structure and purity of the prepared samples and to calculate the average grain size and micro strain, The samples were examined using a scanning electron microscope device to evaluate the crystal size and to see distribution style after the sintering process, were Also, the density of the prepared samples were measured to calculate the porosity values.The results showed that the best samples with very high absorbency a long the (X - band) is (Mg0.6Zn0.4Fe2O4) and (Cu0.6Zn0.4Fe2O4) at sintering temperature (1100 ºC). This stability and efficiency observed firstly compared with other researches and literatures. Also the resonance peaks for all three types of spinel ferrite appeared at frequencies (8.6, 9.8, 10.0, 10.2, 11.01.11.2, 11.6, 12.0, 12.2) (GHz). X - ray diffraction results showed that all the prepared samples are a poly - crystalline also showed the occurrence of micro strain on the crystals due to effect of the sintering temperature on the crystals.Comparison between the samples prepared by Sol - Gel method and Conventional ceramic method; the result showed the homogeneity of particle size and particle distribution was the best for first method. Whereas the porosity was small for this method

حسابات نسبيه لبعض خصائص اطياف الذرات المتوسطة والمرتفعة العدد الذري == RELATIVISTIC COMPUTATION OF SOME SPECTROSCOPIC CHARACTERISTICS OF MEDIUM AND HIGH Z - ATOMS

Author name: عدنان يوسف حسين
Supervisor name: Ra’ad A. Radhi
General topic: Physics
Specific topic: Atomic Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم تقديم دراسة منتظمة لطريقة هارتري - فوك غير النسبيه وكذلك نسختها النسبية (ديراك - فوك) لمعدل التوزيع. بالنسبه للطريقة غير النسبية؛ فقد تم اشتقاق معادلات هارتري - فوك وبشكل مفصل واخذ بنظر الاعتبار التصحيح النسبي (تاثير الكتله - السرعه وتاثير دارون وتاثير تفاعل البرم - المداري للاكترون) وقد اعتبر كرتبه اولى للاضطراب. اما بالنسبه للطريقه النسبيه؛ فقد تم اشتقاق معادلات ديراك - فوك واخذ بنظر الاعتبار تاثير تفاعل بريت كتصحيح نسبي للتفاعل الكولومي وقد اعتبر كرتبه اولى للاضطراب. تم تقديم معادلات عناصر المصفوفه لتفاعل بريت (الحد المغناطيسي والحد الارتدادي) لمعدل التوزيع. تم تقديم النتائج لبعض خصائص الذرات في المستوى الارضي(Rb, Zr, Pd, Sn, Cs, Ba, Lu, Ir, Hg, Tl, Bi, Rn ) وتمت مقارنتها بالنتائج العمليه. التاثير النسبي على طاقات الاغلفه الذريه مهم وخصوصا على الاغلفه الداخليه 1s و2s وهذا التاثير يكون محسوسا كلما ارتفع العدد الذري. يكون تاثير بريت حوالي %2 من تاثير التصحيح النسبي (تاثير الكتله - السرعه وتاثير دارون). حسابات هارتري - فوك والتصحيح ال | A systematic study of the non - relativistic Hartree - Fock method and its relativistic version, Dirac - Fock method for the average of configuration have been presented. In the non - relativistic case, a fully derivation of the Hartree - Fock equations were presented and relativistic corrections (mass - velocity, Darwin and spin - orbit terms) are treated as first - order perturbation. For the relativistic case, Dirac - Fock equations were derived, and Breit interaction operator is used as the relativistic correction for the interelectronic Coulomb interaction, and is treated as the first - order perturbation. Expressions for the matrix elements of the Breit interaction operator (magnetic and retardation terms) are given for the average of configuration. Numerical results of some atomic properties for the ground states of (Rb, Zr, Pd, Sn, Cs, Ba, Lu, Ir, Hg, Tl, Bi, Rn ) atoms computed and compared with their corresponding experimental values. The relativistic effect on the orbital energies is important on the inner shells especially for the 1s and 2s shells and this effect becomes more pronounced as Z increases. The contribution of Breit interaction is about 2% of the relativistic shift (mass - velocity and Darwin correction). The Hartree - Fock calculations and relativistic correction gives reasonably good approximation for heavy atoms while Dirac - Fock calculation and Breit interaction gives high precision calculations

تصميم حاسوبي لحزمة ايونية مركزة للمنظومة الليثوغرافية == Computer - Aided - Design Of Focused Ion Beam For a Lithography System

Author name: فاضل عبد العباس علي السهلاني
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم بناء تصميم متكامل بمساعدة الحاســــــــوب وباســـتخدام الطرق الامثلـــــــية لمنظومة بصــــرية ايونيــة ، وذلك بدمــــج طريقة البرمجة الديناميكية مــــــع طريقة تقنية الذكاء الاصطناعى.فقد تم الحصول على معامــــــلات الزيوغ النســـــبية الكروية واللونية اســــــــتنادا الى معامـــل الهــــــيـئة للمنظومات البصرية المثلى ، وحســـــــــب الاتى : ا. تصميم عدســـة مفردة ( كهربائية ومغناطيســــية).ب‌. تصميم منظومة بصرية مكونة من عدســتين كهربائيتين.ت‌. تصميم منظومة بصرية مكونة من ثلاث عدسات كهربائيات.ث‌. تصميم منظومة بصرية مختلطة العدسات (كهربائية ومغناطيســــية).كذلك تم تصميم اربعة انواع من العدسات الكهروستاتيكية مع نموذج لعدســة مغناطيســــية لاصــغر زيوغ بصرية ( المرتبة البصرية الاولى والثالثة) ، حيث تم اعادة بناء الاقطاب الكهربائية والمغناطيسية ثم رسمها لبعدين وثلاث ابعاد ببرنامج المحاكاة (SIMION(7 ، وبالاعتماد على قاعدة البيانات المخزونة (قاعدة المعرفة).هذه العدسات هى كما ياتى : • عدســة احادية الجهد (1) فى نمط التباطىء .• عدســة احادية الجهد (2) فى نمط التعجيل .• عدســة مغمــــورة.• عدســة الحاجــــــز.• عدســة مغناطيســــــية (1). تـــــم تصميم وكتابـــة الحزمة البرمجية بلغة الجافا منظومة الخبير (JESS) والبيســــــــك المرئى النســـــخة السادســـة (VB 6) اســتوديو ، وذلك للتحليل والحصول على حسابات الامثلية الكاملة للمنظومة البصرية الايونية.حيث تم تســمية تلك الحزمة CADION .ايضا تم استخدام توزيع الجهد المحورى الامثل لكلا المجالين الكهروستاتيكى والمغناطيسى ، بالاعتماد على الشـــــروط المحددة لبناء وتركيب العمود البصرى المكون من عدســـتين وثلاث عدسات ومختلط العدسات. تـــم حساب حجم البقعة لقياسات النانومتر وتم الحصول على قيم تقترب الى (3.0) نانومتر المســـــــــتخدمة فى تطبيقات تقنية النانومتر. وكذلك تــم اقتراح تعاريف ومفردات لبصريات الجســـيمات المشــــحونة باعتبار بعض النتائج محققة لعلاقة شـــــــبيهة بمدا اللادقـــــة. | A complete computer aided design (CAD) by using optimization methods for the ion optical systems have been developed, by mixing the dynamic programming procedure and artificial intelligence technique. The relative spherical and chromatic aberrations coefficients were obtained according to figure of merit for the following optimized optical systems : a. Single - lens design (electrostatic and magnetic). b. Two - lens system consists of two electrostatic lenses. c. Three - lens system consists of three electrostatic lenses.d. Multi - lens system (electrostatic and magnetic).Four types of electrostatic lenses and a magnetic lens model were designed as small as possible of optical properties (i.e. the first and third optical properties), and reconstructions of electrodes and pole pieces were plotted in two and three dimensions graphics by using SIMION 7.0 simulator depending on the stored database (i.e. knowledge base).These lenses are as follows : • Unipotential lens 1 (operated in deceleration mode).• Unipotential lens 2 (operated in acceleration mode).• Immersion lens.• Diaphragm lens.• Magnetic lens. Present software has been designed and written in Java expert system shell (JESS) and Visual Basic 6 (VB6) for optimizing and analyzing full calculation processes, it has called CADION package. The optimized axial potential distributions for both electrostatic and magnetic fields according to the constraints have been used in the optical column setup, which are two - lens system, three - lens system and multi - lens system. Spot size measurements were calculated in nano scales, which have values closed to (3.0) nm applicable in nano technology applications used in lithographic systems. Also, the present work has been suggested definitions and abbreviations in charged particle optics to be consider some of the results, as a verification of the uncertainty principle relationship like

تطوير واستخدام منظومه كشف المواد المتفجرة عن بعد == Development and Optimization of Stand off Explosive Material Detection System

Author name: ولدان محمد عواد
Supervisor name: سهى موسى خورشيد الاوسي | كمال حسين لطيف
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: In order to develop a effected method to reveal the presence of explosive, numerous detection techniques have been studied that are capable of detecting explosives, The current study provides an overview of the present techniques like LIBS which is an atomic spectroscopy, and examined a new technique for detecting called laser induced fluorescence (LIF).LIF essentially measures the optical emission of the excited energetic materials by laser. The use of LIF has led to the discovery of unreported optical characteristics of some compounds that are exclusive to the individual material, like the phase shift and the modulation depth of the fluorescence signals.A high resolution spectrometer is used to record the fluorescence emission wave length for three types of explosive materials, These optical characteristics consist of fluorescence shoulders of the three samples in the wave length between (300 - 370) nm .Using fast rise time photo multiplier and spatial amplification for the fluorescence signal enable us to detect the time domain fluorescence spectrum for three types of explosive materials (AN), (TNT),( C4) and other non - explosive material, this method used Carefully for 8m standoff detection, different type of substrate is examined to simulate the real scan, both the time domain and frequency domain is measured for efficient LIF spectroscopy that give us a total configuration of the tested sample.A library of a total time configuration for different type of material s spectrum enables us to develop a algorithms to distinguish between expl osive and non - explosive material. Used to develop a recognition program to achieve high sensitive detection system.

تعديل سطوح التيتانيوم وسبيكة التيتانيوم باستخدام المواد الاحيائية السيراميكية بواسطة الرشرشة بالترددات الراديوية == Surface Modification of Titanium and Titanium Alloy Using Ceramic Biomaterials by RF Sputtering

Author name: دنيا عبد الصاحب هاشم حمدي
Supervisor name: ثامر عبد الجبار جمعة | ثائر لطيف مزعل
General topic: Physics
Specific topic: Atomic Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: The current in this thesis research deals with the plasma sputtering which was used to deposit single and triple layers ceramics on (cpTi) and ( Ti - 6Al - 4V) alloy. Also ,in this work the in vitro electrochemical tests , formation of HAp by biomimetic process on the coated layers by the immersion in Simulated Body Fluid(SBF) at PH equal to 7.4 and room temperature was done . The single layer TiO2and HAp , multi - layer consist of TiO2 and Al2O3 were deposited on cpTi and Ti - 6Al - 4Valloy, followed by the deposition of third layer of HAp. The deposition conditions in the RF sputtering system such as vacuum pressure, substrate temperature, power, gas type, gas flow and deposition time were fixed for the sputtering system where as the distance between the target and the substrate was varied (9 and 7 cm). Structural analysis was carried out , on the deposited layers(single and triple) using X - ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Furrier Transformation Infra - Red (FTIR), Raman Spectroscopy and X - ray Photoelectron Spectroscopy (XPS). Elemental analysis for HAp deposited in the single and triple layer was done using Energy Dispersive X - ray Spectroscopy (EDS).To investigate the biocompatibility of coatings the formed layers, were immersed in (SBF) for one month. After one month the samples were taken and anlyezed using the same structural analysis techniques used before immersion. Electrochemical investigation was carried out on the deposited layers used Open Circuit Potential (OCP),Linear Sweep Voltage(LSV) and Electrochemical Impedance Spectroscopy(EIS) in SBF. The XRD structural results show that the formation of HAp which was dominated on the phase formation on the surface of the single and triple layers. Also another Calcium - Phosphorus compound phases are found such as Tri Calcium Phosphate(TCP), Octa Calcium Phosphate(OCP) and Calcium Phosphate(CP) along with small fractionIIof the Titanium phase belong the substrate .For TiO2 single layer, XRD pat reins shows the formation of the rutile TiO2which covered the substrate surface.Elemental analysis by using EDS for the single and triple layer deposited in cpTi and Ti - 6Al - 4Valloy shows the energy transitions belong to the dominated elements, Ca and P, which contained in the HAp layer that already showed by XRD. Surface analysis by XPS for immersed samples in SBF for one month show the bonding type and the compound that formed. The XPS results confirmed the SEM observation, the FTIR and Raman results. It was found from the XPS analysis that most of the compound covers the surface are belongs to the Ca - P companies to the carboxyl groups (C - O, C - H) and this was confirmed by the XRD investigation which show the domination of (HAp) in the highest intensity (211) reflection at 2θᵒ of 31.7 for the single and triple layer coating. The XRD results also show the disappearance of the other CaP compounds after one month of immersion in SBF like TCP and CP .The increase in the HAp concentration after immersion indicates the occurrence of the biomimetic process that increases the precipitation of Ca+ and P - from the SBF and the two roots combined together to form CaP compound that increases the HAp concentration. The electrochemical parameters predicted from corrosion test show the improvement in the corrosion resistance of both cpTi and Ti - 6Al - 4Valloy after coated by shifting the OCP toward the nobel direction which was the same behaviour for the corrosion potential Ecorr, and decreases in the corrosion current Icorr and the corrosion rate CR comparing to the uncoated specimens. The (EIS) measurements conformed the improvement in the corrosion parameters result of from OCP and LSV by the very low capacitance for the coated specimens compared to that for the uncoated one which means that the single layer and triple layer protect the surface by increasing the equivalent circuit impedance block

تحضير مادة طلاء من فررايت الليثيوم - النيكل بالتعويض المتكافئ == Preparation of Painting Material from Li - Ni Ferrite with Isovalent Substitution

Author name: صادق هاني لفتة مخلص السراجي
Supervisor name: عماد خضير عباس | علي مطشر موسى
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: حضر فيرايت الليثيوم - نيكل النانوي ذو التركيب Li0.5 - 0.5xNixFe2. - 0.5xO4 بطريقة الهايدروحرارية وبمجموعتين من كلوريدات المعادن وكبريتات الحديدوز وهيدروكسيد الصوديوم. كل مجموعة تتصمن تغيير x بالقبم 0.1 و0.3 وحتى 1.0. المجموعة واحد بدون Fe2+ والمجموعة اثنين مع اضافة Fe2+ . النسبة Fe3+/ Fe2+ ابقيت ثابتة بمقدار 1.7، درجة حرارة التحضير كانت 155oC والدالة الحامضية مساوية لقيمة 11. كل التراكيب حضرت باستثناء المركب عند x=0 بدون اضافة Fe2+ والتي لم يتمكن من تحضيرها بهذه الطريقة تحت الظروف التجريبية المستخدمة. اظهرت النماذج سيادة طور سبنل فيررات بعد x=0.3 للمجموعة واحد وطور نقي عند x=0.3 باستخدام Fe2+ . ثابت الشبيكة للمجموعة اثنين اقل مما للمجموعة واحد. الحجم البلوري يصل لادنى قيمة عند x=0.5 للمجموعة واحد وتقريبا اعظم ما يمكن للمجموعة اثنين عند x=0. قمم اطياف تحت الحمراء لرباعي السطوح تزاح نحو الترددات الاعلى مع زيادة تركيز Ni2+. اشكال الجسيمات كانت : قضبان (غالبا للهمتايت) بمعدل قطر 40nm، وكروية(اصلها مكعبات فيرايت نانوية) بحجم حوالي 20nm. حلقات M - H امتلكت شكل الحرف S مماثلة للتي للسوبربارامغناطيسية. عموما فالنماذج المحضرة تمتلك اقل قاهرية (coercivity)، واعلى تمغنط اشباع (saturation magnetization) من الادبيات المنشورة. كلا المجموعتين امتلكت اعلى تاثرية عند x=0.5. وقد فسرت هذه النتائج على اساس التركيب وتوزيع الايونات الموجبة والتفاعل بينها وحجم الجسيمات. الامتصاص الرنيني للاشعة المايكروية باستخدام اختبار FMR اظهر ان القيمة الاعظم للتاثرية الخيالية χ″ هي عند x=0.5 للمجموعة وقيم عليا عند x=0.7 وx=0.9، واكبر عرض خط حوالي 950G عند x=0.7 . المجموعة الثانية اظهرت اعظم امتصاص(χ″) وعرض خط عندx=0.9 . بعدها تم الخلط مع ايبوكسي النوفالاك بنسبة وزنية 39.7 %. اختبار دائرة القصر - لقياس الرنين المغناطيسي بانعدام المجال قد اظهرت امتصاص للاشعة المايكروية لترددات اكبر من 19GHz. تفسير ان نماذج المجموعة اثنين تمتلك امتصاص اكبر من المجموعة واحد اعتمد على الموصلية التنقلية hopping وعلى تغير المعلمات المغناطيسية ( MsوHc). طريقة خط النفاذ باستخدام VNA في الحزمة - X والحزمة - Ku اظهرت ان خسائر العودة او الانعكاسRL تكون اقل ما يمكن عند x=0.3 للمجموعة واحد في الحزمة - X بينما ذلك عند x=0.3 وx=0.5 للمجموعة اثنين. اضافة Fe2+ يقلل القيمة الدنيا بعامل اكبر من 1.5. خسائر الادراج IL في الحزمة - X تتراوح بين - 4.5dB الى - 7dB . ان RL وIL في الحزمة - Ku تمتلك سلوك متشابه ولكن قيمها اقل. ان RL تصبح اقل ما يمكن عند x=0.5 وبقيمة - 18dB بينما كانت حوالي - 12dB باضافة Fe2+ . ومعدل قيمة IL في حزمة - Ku هي - 6dB. يلخص تاثير السمك بتحسين قيم RL وIL ولكن مع ازاحة القمم الدنــيا الى تــردد اقـل. ســمك بـمقدار 2mm يمـتلك RL< - 27dB وIL< - 19dB. | Nano Li - Ni ferrite samples having the structure Li0.5 - 0.5xNixFe2. - 0.5xO4 were prepared by hydrothermal method in two sets from metal chlorides, ferrous sulfate and NaOH. Each set implicated varying x through 0, 0.1, 0.3 to 1.0. The samples were without and with adding Fe2+. The ratio of Fe3+/ Fe2+ was kept at 1.7. The preparation temperature was 155 °C and pH was equal to 11. All composition was prepared except that for x=0 without Fe2+ which cannot be prepared under used experimental conditions. Samples showed dominant spinel ferrite phase beyond x=0.3 for set one and pure phase at x=0.3 with Fe2+ addition. Lattice constant of set two is slightly lower than set one and both are slightly lower than theoretical values. The crystallite size gets minimum at x=0.5 for set one and roughly maximum at x=0 for set two. Fourier Transformation Infrared (FTIR) spectrums tetrahedral showed peak shift to higher frequency with increasing Ni2+ concentration. Particles shapes were : rods (often hematite) average diameter 40 nm, spherical (nanocube ferrite in origin) sizing around 20nm. Hysteresis Loops have S - shape like to superparamagnetic one. Generally the prepared samples have lower coercivety Hc, higher saturation magnetization Ms compared to these in literatures. Both sets give maximum susceptibility at x=0.5. These results are explained based on composition, cations distribution, cation interactions and particle size. Resonance microwave absorption by using Ferromagnetic Resonance (FMR) test showed that the maximum imaginary susceptibility χ″ is at x=0.5 for set one besides high values of 0.7 and 0.9, with largest linewidth of about 950 G at x=0.7. Set two showed max absorption (χ″) and linewidth at x=0.9. Powders were then mixed with Novalac epoxy by 39.7 %wt. Shortcut - FMR test with no field showed that high absorption to microwave field for frequencies larger than 19 GHz. The explanation of that set two samples have larger absorption than set one is based on hopping conductivity and magnetic parameters (Ms and Hc) variation. Transmission line method by using vector network analyzer in X - band and Ku - band showed that return (reflection) loss RL got minimum at x=0.3 in for set one in X - band whereas that happen at x=0.3 and x=0.5 for set two. Adding Fe2+ lowered the minimum by a factor of more than 1.5. The insertion losses IL in X - band ranging from - 4.5 to - 7 dB. RL and IL in Ku - band have same behavior but their values are lower. RL got minimum at x=0.5 with value of about near to - 18dB whereas it was around - 12dB by adding Fe2+. Average IL in Ku - band - 6dB. Thickness effect is abstracted by enhancing RL and IL but shifting the minimum of peaks to lower frequency. 2mm thick has RL< - 27dB and IL< - 19dB.

الحالات الكمية المتشاكهة المشوهة وبعض تطبيقاتها == q - Deformed Quantum Coherent States and Some of Their Applications

Author name: احمد شاكر محمود ياس
Supervisor name: محمد عبد الزهرة حبيب
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: The concept of q - deformation has found many important applications in a variety of fields in physics, such as quantum optics, atomic physics, solid state physics, nuclear physics and cosmology. This has motivated its extension to many well - established other concepts such as coherent states well - known in quantum optics. On the other hand, the interpretation of the physical meaning of the q - deformation remains an outstanding problem.The present work is an attempt to apply the concept of q - deformed coherent states to solve this interpretation problem. The q - deformed 1 - D quantum harmonic oscillator is used as a model for the application of the methodology of using q - deformed coherent states to solve this problem. This is achieved by first deriving the classical Liouville equation for the q - deformed 1 - D classical harmonic oscillator in the undeformed and deformed oscillator phase spaces. Then, this equation is solved by using the method of characteristics which gives the classical probability distribution function for this oscillator in phase space. The behavior of this function is then investigated by using a computer visualization method based on a computer program constructed in Mathematica® language.On the quantum level, the Heisenberg equation of motion for the density operator corresponding to this 1 - D quantum harmonic oscillator is expressed in the present work in terms of the standard quasiprobability distribution functions, again in the deformed and undeformed phase spaces. This helps to derive the quantum Liouville equations for this q - deformed oscillator in these phase spaces. The classical limits of these resulting Liouville equations are then approached by extending a standard procedure based on the non - deformed coherent states to the q - deformed case. In addition to the application of the standard q - deformed coherent states, a novel approach based on q - deformed coherent states due to Arik and Coon is also employed in this investigation.The results of detailed mathematical derivations in this process of approaching the classical limit reveal that this limit is statistical in nature. This is similar to the case of the ordinary undeformed oscillator which has been proved previously.They also reveal, together with the complementary computer visualizations, more information about the physical meaning of the q - deformation. This includes the observations that the q - deformed 1 - D oscillator can be interpreted as a nonlinear oscillator where the nonlinearity parameter depends on . Also, the behavior of the classical limits of the quantum Liouville equations for this oscillator is observed to show whorl shapes that can be contrasted with their classical analogs.This whorl shape behavior can be considered as a phenomenon connected with q - deformation in general; the anharmonic oscillator being a special case.Some connection with phase space having a non - commutative geometry, resulting from q - deformation, also finds evidence in some of the results presented in this thesis.

تحضير وتوصيف المادة الكهروحرارية ZnxBi2 - xTe3 == Preparation and Characterization of ZnxBi2 - xTe3 Thermoelectric Material

Author name: منال عبد الواحد عبود
Supervisor name: عماد خضير عباس | علي مطشر موسى
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: In this project we constructed a DC sputtering system for thepreparation of BiR2RTeR3R (Bismuth Telluride) thin films. BiR2RTeR3R and itsZnRxRBiR2 - xRTeR3R alloys which were prepared in this work by solid solutionas bulk samples and by D.C. sputter as thin film samples. Bothsamples are characterized by X - ray Diffraction Pattern (XRD) and byGrazing Incident Small Angle X - ray Scattering (GISAXS) for thinfilms that have small thickness less than 100 nm. Thin films sampleswere prepared under different deposition conditions (differentdeposition time, different pressure, different voltages and differentelectrodes distance). (XRD) and (GISAXS) results showed that theprepared BiR2RTeR3 Rwas polycrystalline and has high direction at (015)plane in 2????=27.37 ͦ while its alloys at (0015) in 2????=45.12 ͦ and theintensity of the peak increase by increasing Zn amount indicateincrease this plane density. For thin films the (XRD) results show thatthin film prepared under deposition conditions of (0.06 mbar, 900volt, 1 hour, 100 mA and 1cm electrodes spacing distance) areamorphous at thickness less than 200 nanometer and polycrystalline ifthe thickness increases more than 250 nm. A shift in planes presenceis due to the creation of (ZnTe) compound and increase in grain size.Atomic Force Microscopy (AFM) was used to estimate the average grain size of thin film prepared, results showed different average grain sizes depending on the system type and system parameters, also depending on the target composition. DC sputtering system showed lesser average diameter and high roughness that indicates DC sputtering system is suitable for long time deposition high efficiency TE thin film. To investigate the structure of samples Scan Electron Microscopy (SEM) was used and High Resolution Transmission Electron Microscopy (HRTEM) to evaluate the nano inclusion of solid solution.Thickness of some sample was examined by SEM technique where thicknesses of 23 nm, 46 nm and others are estimated. HRTEM Techniques are used to identify the shape of the low dimensions structure produced in the project. It is found that there are particles size with diameter rang about (66 - 107 nm) having uncontrolled shapes and size which were discovered in samples besides nano inclusions of Zn and ZnTe phase.Thermoelectric properties (Seebeck, power factor, conductivity and figure of merit) of all samples (bulk, thin films) were tested .The results show that the maximum Seebeck coefficient for Bi2Te3 as a bulk is (67.02 μV/K) at T=373 ͦ K while adding Zn enhance this value to (123.96 μV/K) at 363 for Zn0.1Bi1.9Te3 and (224.6 μV/K) for Zn0.2Bi1.8Te3 at 348 K and (189.6 μV/K) for Zn0.3Bi1.7Te3 at348 K. on other hand the thin films prepared have larger thermoelectric properties i.e. high seebeck coefficient, high power factor, high electrical conductivity and high figure of merit for all four alloys.

دراسة التحولات الطورية والنقاط الحرجة في منطقة العناصر الارضية النادرة ضمن اطار نموذج البوزونات المتفاعلة IBM - 1 == STUDY OF PHASE TRANSITIONS AND CRITICAL POINTS IN THE REARE EARTH REGION IN THE FRAMEWORK OF INTERACTING BOSOM MODEL (IBM - 1

Author name: فؤاد عطية مجيد العجيلي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: A systematic study of isotope chains in the rare - earth region is presented. For the chains 144, , , and 150, energy levels, E2 transition rates, and two - neutron separation energies (SNd15460−Sm16014662−Gd16214864−Dy16666−2n) are described by using the most general (up to two - body terms) IBM - 1 Hamiltonian. For each isotope chain a general fit is performed in such a way that all parameters but one are kept fixed to describe the whole chain.In this region, nuclei evolve from spherical to deformed shapes and a method based on catastrophe theory, in combination with a coherent state analysis to generate the IBM - 1 energy surfaces, is used to identify critical phase transition points.The approach used to fix the Hamiltonian parameters leads to a very good global agreement with the recent available experimental data corresponding to excitation energies, B(E2)’s and S2n values. In particular, an excellent agreement with the measured S2n values is obtained, which is considered a key observable to locate phase transitional regions. The analysis presented here is consistent with previous CQF studies in the same region. As a result we find that 148Nd and 150Sm are the best candidates to be critical, but we should remark that 150Nd and 152Sm are not far away from it.

حسابات الامثليه لمنظومة حرف الحزمة الالكترونية == A COMPUTATIONAL OPTIMIZATION OF AN ELECTRON BEAM DEFLECTING SYSTEM

Author name: عدي علي حسين العبيدي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم استخدام التقريبين التحليلي والتركيبي لطريقة الامثلية في الدراسة الحالية لايجاد التصميم الامثل للحارفات المغناطيسية والكهروسكونية التي تعطي اقل زيغ كروي ولوني. استخدم التقريب التركيبي في حسابات الحارفة المغناطيسية وتم استخدام ملف الانحراف ذو النير الراكب (saddle yoke deflection coil) مصدرا للمجال المغناطيسي، عدة نماذج لتوزيع المجال المحوري استخدمت في الحسابات وكذلك تم استخدام انموذج جديد تم اقتراحه في الدراسة الحالية. فكرة العدسة الشيئية المتحركة اعتمدت في حسابات مجال الانحراف، زيوغ الانحراف خفظت لكل انموذج لتوزيع المجال بتغيير شكل ملف الانحراف، حيث غير الطول والزاوية. باستخدام امثل توزيع للمجال المحوري لكل حالة تم ايجاد تصميم قطع القطب التي تعطي توزيعات المجال هذه باستخدام طريقة اعادة البناء.في حسابات الحارفة الكهروسكونية، كل من التقريبين التحليلي والتركيبي استخدما لايجاد التصميم الامثل الذي يعطي اقل زيغ. تم اولا، استخدام التقريب التحليلي لدراسة بعض تصاميم الحارفات الكهروسكونية والتي تتكون من صفيحتين متوازيتين؛ الوصول للامثلية تم بتغيير الشكل الهندسي للحارفة عن طريق تغيير ابعاد الصفائح المتوازية. ثانيا، التقريب التركيبي استخدم لايجاد اقل قيم للزيغ باستخدام توزيع جديد اقترح في الدراسة الحالية للحارفات الكهروسكونية تحت البحث. شكل الحارفة تم ايجاده باستخدام طريقة اعادة البناء.اخيرا، الحارفات المغناطيسية والكهروسكونية جمعـت وركبت لتعطي عامود كامل لانظمة الانحراف ورسمت مقاطع مستعرضة لمسارات الحزم.

تقييم اداء تصاميم جديدة لسخان الماء الشمسي في مدينة البصرة30.5°N == Evaluation of new designs of solar water heater in Basrah city 30.5° N

Author name: كوثر كاظم منخي
Supervisor name: نوري حسين نور الهاشمي | جاسم مهدي الاسدي
General topic: Physics
Specific topic: Solar Energy Physics
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The main goal of the current study is the benefit of solar energy as the origin of any renewable energy for producing a hot water through multiple solar collectors each one with overall capacity about 26 liter so that, these collectors arranged in sequential order within the construction of the house without affecting the artistic aspects of the house. These collectors will capable of providing the house the needs of hot water for domestics use especially during the winter season. It will reduce the amount of energy such as electricity and or kerosene or any other source of energy that usually used in Basrah.The present study is included the design and manufacture of seven models of solar collectors. The tools that have used into manufactured of these collectors are some cheap materials that are available in Basrah markets. These models are differ from each other by some aspects with additions properties. The thermal performance and efficiency have a test and then choose the best one in order to use it in four different modern designs of solar heaters.the thermal performance of the manufactured heaters models are tested by calculate the amount of hot water supply under difference weathers conditions in the city of Basrah, which sorts as a large abundance of solar radiation. It also test two types of arrangement of difference parts of heaters. The practical test has been proven the advantage of linking hot water reservoir tank with cold water and then linking the whole system with the hot water tank. This arrangement will allow of gradual warming of the water, which allows the consumer get the hot water directly from the system and not from the reservoir. This study include what is called a feedback arrangement system in order to increase the benefit from solar radiation. In this case, the hot water will recycle to allow for moreexposure to solar radiation repeatedly, that in the case of non - use or the case of little use.All the experiment Steps carried out on the roof of the department of physics building's in the college of education for pure Sciences, Basrah university in the northern city of Basrah, located at latitude 30.50 N and longitude 47.80 E during the winter season 2013 - 2014. Al thought this winter characterized by abundant of rain and clouds the models No.5 shows very good results interm of high temperature of hot water and the amount of it. The temperature was reach (900 C). In addition the model No.4 which depend on the technique of feedback idea shows a good result interm of the amount of hot water produce which reach (146 liter) at a temperature about (500 C) with in only five hours starting at 10 : 00 am until the 2 : 00 pm.In order to develop the optimum dimensional measurements of the solar collectors a mathematical model was developed to predict the output temperature of hot water from the solar collectors or from the radiator in general for different dimensions. This model is working successfully and achieved data that in comparable with our experimental ones. The experimental results have been analyzed theoretically to compare the performance of all solar collectors of the heaters, in different weather conditions and in a same time.

قياس تركيز غاز الرادون والثورون في المنازل والمستشفيات والمراكز الصحية في محافظة البصرة العراق

Author name: حسام نجم عبود
Supervisor name: عيسى جاسم محمد الخليفة
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:

قياس تراكيز الرادون للمستشفيات ,المراكز الصحية والمنازل وقياس البورون في مياه محافظة ذي قار - العراق == Measurements of Radon in Hospitals, Health Centers and Dwelling as well as Boron Measurements in Water of Thiqar Governorate(Iraq)

Author name: احمد عباس محمد
Supervisor name: عيسى جاسم محمد الخليفة
General topic: Physics
Degree: Doctorate
Language: English
University location: Basrah
First pages:
Abstract: العمل الحالي يتضمن ثلاث دراسات اجريت جميعها في محافظة ذي قار جنوب العراق, حيث استخدم 976 نموذج فيها.الدراسة الاولى استخدمت 625 نموذج من كاشف الاثر LR 115 Type II جمعت من 40 منزل في كل قضاء , حيث تم قياس مستويات الرادون وخطر الاصابة بسرطان الرئة من خلال الطريقة السلبية . النتائج اظهرة مستويات مرتفعه وخصوصا في المطبخ مقارنتا مع الاماكن الاخرى وذلك بسبب غاز الطبخ والمياه المستعملة. ان المعدل للجرعة المكافئة السنوية للمطبخ تتغير من 2.316±0.172 في الناصرية الى0.759±0.0348 في سوق الشيوخ .اما الدراسة الثانية فقد استخدمت 186 نموذج من كاشف الاثر LR 115 Type IIجمعت من 57 مستشفى ومركز صحي , حيث استعملت الطريقة اعلاه لقياس مستويات الرادون وخطر الاصابة بسرطان الرئة هناك.لقد اظهرت النتائج ان مستويات الرادون في المستشفيات اعلى من نظيرتها في المراكز الصحية. ان اعلى معدل للجرعة المكافئة السنوية للمراكز الصحية 2.504±0.114 mSv/y بينما للمستشفيات3.150±0.091 mSv/y. في كلى الدراستين اعلاه وجد ان اغلب الجرعات الاشعاعية , ليست اعلى من المعدل العالمي 2.4 mSv/y , ولذلك فانها لا تشكل خطرا جديا على المتواجدين.ان الدراسة الثالثة هدفها قياس تراكيز البورون في مياه محافظة ذي قار , حيث ان امدادات المياه تاتي من مصدرين رئيسين وهما نهري دجلة والفرات, حيث جمع 165 نموذج من 55 موقع لثلاثة انواع من المياه (مياه نهر, مياه اسالة , مياه شرب) واستخدمت الطريقة اللونية لقياس تركيز البورون في عينات الماء. ان اعلى التراكيز سجلت لمياه الانهر في قضاء الناصرية 1.729 mg/l , ولمياه الاسالة سجلت في قضاء الجبايش 0.3 mg/l , اما مياه الشرب فسجلت في قضاء الجبايش 0.286mg/l ,حيث النتائج اظهرت كذلك ان نهر الفرات اكثر تلوثا بعنصر البورون وذلك بسبب ان المناطق ذات الكثافة السكانية العالية ,المصانع والمنشات الكبيرة تقع على ضفافه , حيث ان معدل لتراكيز البورون لنهر دجلة 0.244 mg/l , بينما لنهر الفرات 0.794 mg/l . الدراسة الحالية اظهرت ان تراكيز البورون لنهر دجلة ليست اعلى من المعدل العالمي (اقل من 0.5 mg/l) . بشكل عام نتائج نهر الفرات اعلى من المعدل العالمي 0.5 mg/l , ولكنها تبقى ضمن المستويات المنخفضة لتراكيز البورون , حيث حدد الاتحاد الاوربي المستويات المقبولة ب 1.0 mg/L عام 1998 , اما نيوزيلندا فحددته ب 1.4 mg/L. | The present work included three studies carried out in Thiqar Governorate southern of Iraq, where 976 samples has been used .The first study used 625 samples of LR 115 Type II dosimeters where collected from 40 dwelling in each distract, Passive method is used to measure the radon indoor levels and lung cancer risk. The results show higher indoor radon levels and radon effective dose especially in kitchen as compared to other locations. High values of radon activity may be due to use of water and cooking gas in kitchen.The average annual effective dose for kitchen varying from 2.316±0.172 mSv/y recorded in Al Nasiriya district to 0.759±0.0348 mSv/y recorded in Suq AlShyouk district.The second study used 186 samples of LR 115 Type II dosimeters collected from 57 Hospitals and Health centers, also Passive method is used to measure the radon indoor levels and lung cancer risk. The results show that the calculated indoor radon levels and radon effective dose in Hospitals are higher than that in Health Centers.The maximum average annual effective dose in Health Centers is 2.504±0.114 mSv/y , while for Hospitals is 3.150±0.091 mSv/y.In the two studies most of the radiation dose are not higher than the world wide average back ground dose of 2.4 mSv/y and hence they does not pose any serious threat to the occupants.The third study aims is to measure the concentration of boron in waters of Thiqar Governorate (southern of Iraq), the water is supplied from two major sources (Tigris and Euphrates Rivers). 165 samples collected from 55 location for three types of water (rivers water, Tab water, drink water). Colorimetric curcumin method is used to measure the boron concentration in the water samples. The maximum Boron concentrations in Thiqar Governorate for River water (surface water) (1.729 mg/l) in Nasiriya district, Tab water(0.3 mg/l) in Chibiesh district and Drink water (0.286mg/l) in Chibiesh district. The results shown that Euphrates river is more polluted with boron element, because its pass in highly occupied region and meager factories ,facilities lay on it, where Tigris average value 0.244 mg/l,while Euphrates average value 0.794 mg/l.The present work shows most of the boron concentration in Tigris river aren't higher than the world wide back ground <0.5 mg/l. In general Euphrates river results are higher than the world wide back ground, but it's still in the low concentration levels for boron, where the European Union established a value of 1.0 mg/L for boron in 1998 for the quality of water intended for human consumption, also New Zealand has established a drinking water standard for boron of 1.4 mg/L

استقصاء خصائص المفرق الهجيني Cd1 - xZnxS/Si للتطبيقات الفوتوفولتائية == Investigation of Cd1 - xZnxS/Si Heterojunction Properties for Photovoltaic Applications

Author name: رسل عبد الامير غازي مصحب
Supervisor name: ناهدة بخيت حسن
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: تم تحضير اغشيةCd1 - xZnxS باستخدام تقنية الرش الكيميائي الحراري وهي طريقة سهلة الاستخدام ومناسبة للترسيب على مساحات كبيرة . استخدمت خلات الكادميوم المائية كمصدر للحصول على الكادميوم وخلات الخارصين المائية كمصدر للحصول على الخارصين والثيوريا مصدر للحصول على الكبريتيد. تم تحضير مزيج الاغشية Cd1 - xZnxS بنسب حجمية مختلفة من (x) 0,0.2 ,0.4 ,0.6 ,0.8 ,1] [x= على قواعد زجاجية وسليكونية نظيفة ومسخنة عند درجة حرارة اساس 360) oC) وقد استخدم الهواء الجوي كغاز حامل . تم فحص التركيب البلوري للاغشية المحضرة بطريقة حيود الاشعة السينية ( XRD) واوضحت النتائج ان جميع الاغشية المحضرة كانت متعددة التبلور واظهرت تحسن البنية البلورية من حيث نقصان عدد القمم واختفاء بعضها وهذا مؤشر لتحسن خصائص الاغشية المحضرة. درست طبوغرافية الاسطح للاغشية المحضرة باستخدام مجهر القوى الذرية (AFM) والمجهر الالكتروني الماسح ) FESEM) ومبدد الطاقة للاشعة السينية (EDX) . الحجم الحبيبي للغشاء الرقيق Cd1 - xZnxS يزداد مع زيادة النسب الحجمية من (ZnS) . كذلك ان زيادة نسبة (ZnS) تؤدي الى زياده خشونة السطح، فحص (EDX) اظهر احتواء الاغشية على عناصر (Cd, Zn, S) كما هو متوقع ، مشيرا الى تشكيل اغشيه S Cd1 - x Znx عالية النقاوة. تم دراسة الخصائص البصرية للاغشية المحضرة بسمك (160 ± 3) nmباستخدام قياسات النفاذية البصرية في المنطقة الطيفي (300 - 1100) nm. نتائج النفاذية كانت اكبر من 94%. فجوة الطاقة المباشرة للــ (CdSpure) تساوي 2.61) eV) ، والتي تزداد مع زيادة النسب الحجمية من (ZnS) حيث ان فجوة الطاقة لل( (ZnSpureتساوي 3.41) eV) .الثوابت البصرية كمعامل الانكسار ومعامل الخمود وثوابت العزل تم حسابها لجميع الاغشية المحضرة. الخصائص الكهربائية مثل التوصيلية الكهربائية المستمرة وتاثير هول تم دراستها . اشارت النتائج ان الاغشية من النوع الموجب ( p - type ) وتمتلك طاقتي تنشيط ( Ea1,Ea2 )، وقد وجد ان التوصيلية الكهربائية المستمرة تقل مع زيادة نسب حجمية من (ZnS). قيست سعة الانحياز العكسي للمفرق الهجين Cd1 - x ZnxS /n - Si كدالة لفولتية الانحياز وبتردد (1) MHz ، وقد دلت هذه النتائج على ان المفرق من النوع الحاد، لوحظ نقصان السعة بزيادة جهد الانحياز العكسي كذلك تزداد السعة (334 - 577) pF مع زيادة النسب الحجمية من (ZnS) ، بينما يقل عرض منطقة النضوب مع زيادة النسب الحجمية من (ZnS) . ووجد ان جهد البناء الداخلي تقل قيمته من (0.7 - 0.27) Volt مع زيادة النسب الحجمية من (ZnS). بينت خواص تيار - فولتية للمفرق الهجين (CdS)1 - x (ZnS)x /n - Si بان تيار الظلام الامامي يتغير اسيا تقريبا مع فولتية الانحياز ويتفق المفرق المصنع مع نموذج اعادة الاتحاد - الانتفاق ويظهر الانحياز العكسي توقف طفيف ثم فولتية انهيار تدريجيا. كذلك يلاحظ تناقص عامل المثالية وتيار الاشباع مع زيادة النسب الحجمية من (ZnS). درست خواص تيار الدائرة القصير وفولتية الدائرة المفتوحة حيث وجدنا ان Jsc وVocتزداد قيمتهمزايادة النسب الحجمية من (ZnS) وقد فسر سبب ذلك بوجود تغير في التركيب للاغشية وكذلك تحسن طبقة التداخل بين p - (CdS)1 - x(ZnS)x وn - Si .درست الخصائص الطيفية للمفرق الهجين Cd1 - xZnxS /n - Si ووجدنا ان قيم الاستجابة الطيفية , الكشفية النوعية والكفاءة الكمية تقل وتزحف باتجاه الاطوال الموجية الطويلة مع زيادة نسب حجمية من (ZnS) ، بينما تزداد القدرة المكافئة للضوضاء مع زيادة النسب الحجمية من (ZnS). من خلال قياسات الخصائص التحسسية للاغشية الرقيقة لغاز ( NO2 ) اظهرت تحسسية جيدة عند حرارة تشغيل (100 - 200)oC ،ايضا تحسسيه الاغشية للغازات تقل بزياده تركيز ZnS عند oC (200) وان تغيير درجة حرارة التشغيل تؤدي الى تغيرات واضحة في تحسسية الاغشية. | Cd1 - xZnxS thin films were prepared by using a chemical spray pyrolysis technique, which is a simple, inexpensive and suitable technique for large deposition area.The cadmium acetate was used as a source of cadmium, the zinc acetate was used as a source of zinc and theoria was used as a source of sulfide. Mixed Cd1 - xZnxS thin films with different Vol.% of (x) (x= 0,0.2,0.4,0.6,0.8 and 1) has been prepared on clean glass and silicon substrate at 360 ºC with atmospheric air as the carrier gas. The crystal structures of the deposited films were examined by X - ray diffraction analysis. The results show that all the prepared films are polycrystalline structure,and it has shown improvement in the crystal structure in terms of decreasing the reflection peaks and disappearance of some peaks .This refers to the improvement in the properties of the films. The surface morphology of the deposits films has been studied by using atomic force microscope(AFM),Field emission scanning electron microscope (FESEM) and energy dispersive X - ray(EDX).The grain size of the Cd1 - xZnxS thin films increases with increasing of ZnS Vol.% , also the increasing ZnS Vol.% leads to increase in the surface roughness. (EDX) shows that all the films contain the elements (Cd, Zn and S) as expected, indicating formation of the Cd1 - xZnxS films with high purity films with good stoichiometry. The optical properties of the films, which were prepared with thickness of (160±3) nm,have been determined by using the optical transmittance measurements in the spectral region from (300 - 1100) nm. Transmittance results were upper than 94% and direct energy gap for (CdS pure) equal (2.61) eV, it increases with increasing ZnS of Vol.% where energy gap for (ZnS pure) equal (3.41)eV. The optical constants such as refractive index, extinction coefficient and dielectric constant have been calculated for all prepared films. The electrical properties include D.C conductivity and Hall effect were studied. The results show that the prepared films were p - type , and have two activation energies (Ea1 , Ea2).It is found that the electrical D.C conductivity decreases with the increase of the ZnS Vol.%. The reverse bias capacitance for p - Cd1 - xZnxS /n - Si heterojunction was measured as a function of bias voltage at frequency 1MHz, and we note that these heterojunction are abrupt. The capacitance decrease with increasing the reverse bias voltage, also it increases from (334 to 577) pF with increase of the ZnS Vol.%. while the depletion width decreases with increasing of the ZnS Vol.%. The value of built - in potential decreases from (0.7 to 0.27) Volt with increasing of the ZnS Vol.%. For p - Cd1 - xZnxS/n - Si heterojunction under dark conditions shows that forward bias current variation approximately exponentially with voltage bias.This conforms with tunneling - recombination model.The ideality factor and saturation current were calculated and notice the value decrease with increasing of the ZnS Vol.%. The short - circuit current density and open - circuit voltage have been studied, where the Jsc and Voc increases with increasing of the ZnS Vol.%. The spectral response of Cd1 - xZnxS/n - Si was studied. The values of responsivity, specific detectivity and quantum efficiency decreases and shifts to longer wavelength with increase of the ZnS Vol.%. While the noise equivalent power increases with increasing the ZnS Vol.%. From the sensing properties measurements of thin films show that films were good sensors for gas (NO2) at operation temperature (100 - 200) oC , also sensitivity of films for gases decreases with increases the concentration of ZnS at (200) oC. The variation of the operating temperature of the films have led to a significant change in the sensitivity of the sensor.

التراكيب الالكتروني بعض المعقدات المعدنية المختارة

Author name: فائق عبد الله محمد التميمي
Supervisor name: حامد ابراهيم عبود محمد التميمي
General topic: Physics
Specific topic: Electronics Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: The aim of the present work entitled " Electronic Structure of SomeSelected Metal Complexes " is to present a theoretical study based on thehybrid function of three parameters Lee - Yang - Parr B3LYP of the densityfunctional theory DFT quantum mechanical approach together with theStuttgart Dresden triple zeta SDD basis sets. All calculations are carried outby employing the used method at the Gaussian 09 package of programs.The studied metal complexes are twenty four divided into three groups : Platinum metal complexes, Vanadium metal complexes and Aluminummetal complexes. The electronic structure of the complexes includes thestructural, electronic, spectroscopic and excitation states properties.The results show that the SDD basis sets are efficient stronglysuggested for heavy metals and give good relax for the structures of thestudied metal complexes, where the geometrical parameters for cis - platinare in a good agreement with experimental results. Cis - platin has a largeabsolute value of chemical potential with low value of electrophilic index.Cis - platin has high ability to chemically interact with big molecules and ittakes place either in a clinical use or under clinical trials. Some platinummetal complexes and compounds have high symmetric distribution ofelectron density and electrostatic potential and others make variousbehaviors for electron transfer. Platinum metal complex isomers have thesame behavior of platinum centered compounds such as carboplatine andoxaliplatin used as drugs in clinical uses, where the ammine or bidentateammine ligands and either chlorides or carboxylate are leaving groups.The platinum metal complexes have high ability to interact with largemolecules due to their symmetric in the space and to participate either inclinical use or under clinical trials as agents. All platinum metal complexcompounds have electrophilic index greater than that for cis - platin and theyIIare soft compounds, they can easily interact with big soft molecules suchas enzymes or DeoxyriboNucleic Acid DNA.The results state that the vanadium metal complexes have low LUMOHOMOenergy gap and they are more biological activity. Moreover, theoxygen and chlorine atoms in vanadium metal complexes have an ability tointeract with the receptor reactive sites. The results of quantum chemicalparameters indicate that the vanadium metal complexes are soft and caneasily interact with enzymes. The results of nuclear magnetic resonancecalculations illustrate the central vanadium metal ion in all complexes thathave the lowest value of magnetic shielding and chlorine atoms whosemagnetic shielding values depend on the coordination for each complex.The molecular polarizability calculations showed that the vanadium metalcomplexes have chemical activity and high ability to interact with speciesespecially the enzymes in which they are soft big molecules. For aluminum metal complexes, the results reinforce that they have various electronic applications with different LUMO - HOMO energy gaps.The differences of the HOMOs and LUMOs energies distribution make the aluminum metal complexes to have chemical reactivity as Ziegler - Natta catalysts in the chemical applications such as polymerization processes.The results also prove that the electron density distribution is made from the aluminum metal complexes to have low electrophilic index in which they play a significant role as catalysts in many chemical reactions especially the polymerization processes.

المعالجة شبه الكلاسيكية والكمية لتفاعلات الاندماج والتفكك لبعض النوى الخفيفة والمتوسطة == Semiclassical and Quantum Treatment of Fusion and Breakup Reactions of some light and Medium Nuclei

Author name: مالك صالح محيميد الحمداني
Supervisor name: خالد حسين هاتف العطية | فؤاد عطية مجيد
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: في هذه الدراسة ، اجريت حسابات مقطع الاندماج الكلي σ_fus وتوزيع حاجز الاندماج D_fus واحتمالية الاندماج P_fus للانظمة 4He+233U، 6He + 64Zn ، He+209Bi6، 7Li+59Co،B+237Np11، C+48Ti13، 14N+59Co، N+54Fe15، 16O+46Ti، 18O+58Ni، 18O+60Ni، O+64Ni18، O+208Pb18، F+40Ca19، 27Al+45Sc، 30Si+64Ni، 37Cl+25Mg، 46Ti + 46Ti، Ti+60Ni50، 58Ni + 28Si، 58Ni + 54Fe، 58Ni+60Ni، 60Ni+100Mo . اجريت الحسابات باستخدام مقاربتين : اولا، المقاربة الشبه الكلاسيكية والتي تعتمد بالاساس على نظرية Alder وWinther والتي استعملت لتعالج التهيجات الكولومية للنويات والتي تسمى بطريقة اقتران القنوات للاستمرار المقطع (CDCC). الحسابات تم انجازها في حالة غياب وتضمين تاثيرات الاقتران. ان المقاربة شبه الكلاسيكية تستعمل تقريبWenzel وKramers وBrillouin (WKB) لمعالجة احتمالية الاندماج الكلاسيكية بينما الحركة الذاتية تمت معالجتها عن طريق معادلة شرودنكر المعتمدة على الزمن. ثانيا، المقاربة للميكانيك الكمي حيث تعاملنا مع المسالة مستخدمين حسابات الميكانيك الكمي الشاملة والتي انجزت الحسابات في حالة عدم تضمين تاثيرات الاقتران وكذلك مع الاخذ بنظر الاعتبار تاثيرات الاقتران.انجزت الحسابات باستعمال البرامج الحاسوبية SCF للحسابات الشبه كلاسيكية وQMCC لحسابات الميكانيك الكمي. البرنامج الحاسوبي SCF والذي كتب بالاصل من قبل H. D. Marta ومجموعته البحثية باستعمال لغة الفورتران ، بينما البرنامج الحاسوبي QMCC والذي كتب بالاصل من قبل L. F. Canto ومجموعته البحثية باستعمال لغة الفورتران. قمنا بتعديل هذه البرامجيات الحاسوبية لتاخذ بنظر الاعتبار الحركة النسبية بين الهدف والقذيفة. طريقة مربع كاي (chi - square) استعملت لايجاد مدى تقارب حساباتنا النظرية بالمقارنة من البيانات العملية الى جانب ذلك قمنا باضافة توزيع حاجز الاندماج ليحسب مباشرة من هذه البرامج. لقد كتب برنامج فرعي بلغة فورتران 90 لحساب توزيع حاجز الاندماج D_fus باستعمال طريقة الفرق بين ثلاث نقاط وهذا البرنامج الفرعي تم ربطة مع البرنامج الحاسوبي QMCCلكن في برنامج SCF اخذنا المشتقة الثانية لـ (Eσ_fus) حيث σ_fus هي بصيغة وونك.لقد قورنت حسابات مقطع الاندماج الكلي σ_fus وتوزيع حاجز الاندماج D_fus واحتمالية الاندماج P_fus باستعمال طريقة مربع كاي (chi - square) لكلا التقاربين الشبه الكلاسيكي والميكانيك الكمي الشامل وبكلتا الحالتين بغياب الاقتران وبوجود الاقتران مع البيانات العملية. قورنت الحسابات شبه كلاسيكية وحسابات الميكانيك الكمي الشاملة لمقطع الاندماج الكلي σ_fus وتوزيع حاجز الاندماج D_fus واحتمالية الاندماج P_fus مع البيانات العملية المتوفرة لكل نظام، وجد ان حسابات قنوات الاقتران للميكانيك الكمي في توافق اكثر مع البيانات العملية من الحسابات شبه الكلاسيكية لاغلب الانظمة قيد الدراسة. | In this study, the calculations of the total fusion cross section σ f us, the fusion barrier distribution Df us and the fusion probability Pf us, for the reactions4He+233U, 6He+64Zn, 6He+209Bi, 7Li+59Co, 11B+237Np, 13C+48Ti, 14N+59Co,15N+54Fe, 16O+46Ti, 18O+58Ni, 18O+60Ni, 18O+64Ni, 18O+208Pb, 19F+40Ca,27Al+45Sc, 30Si+64Ni, 37Cl+25Mg, 46Ti+46Ti, 50Ti+60Ni, 58Ni+28Si,58Ni+54Fe, 58Ni+60Ni, 60Ni+100Mo have been conducted. The calculations have been performed by using two approaches : Firstly, the semiclassical approach which based on Alder and Winther (AW) theory originally used to treat the Coulomb excitation of nuclei which is called Continuum - Discretized Coupled Channels (CDCC) method. The calculations have been preformed in the absence of coupling effects and in the case of the coupling effects were included. The semiclassical calculations used Wentzel, Kramers and Brillouin (WKB) approximation to treat the classical probability while the intrinsic dynamics is handled by the time - dependent Schrodinger equation.Secondly, the quantum mechanical approach, in which we treat the problem using the full quantum mechanical calculations. The calculations were performed in the case of no coupling included and with the coupling effects were taken into consideration.The calculations have been performed by using SCF code for semiclassical and QMCC code for quantum mechanical calculations. The SCF code is originally written by H. D. Marta and his collaborators using fortran language, while the QMCC code is originally written by L. F. Canto and his collaborators using fortran language. A sub - program has been written by Fortran 90 language to calculate the fusion barrier distribution Df us using the three - point - differencemethod. This sub - program has been implemented in both SCF and QMCCcodes.The calculations of the total fusion cross section σ f us, the fusion barrier distribution Df us and the fusion probability Pf us, have been compared by means of chi - square method for both semiclassical and quantum mechanical approaches in both no - coupling and coupling case with the corresponding experimental data. It is found that the quantum mechanical coupled channels calculations are in more agreement with the experimental data than the semiclassical calculations for most studied systems

تحضير ودراسة الخواص البصرية الخطية واللاخطية للوسط الفعال لليزر العشوائي == Preparation and Study a Linear and Nonlinear Optical Properties of Active Medium to Random Laser

Author name: ميثاق مطر مهدي خلف السلطاني
Supervisor name: جاسم محمد جاسم حسوني | ياسين حسن كاظم احمد
General topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: يتكون الوسط الفعال لليزر العشوائي عادة من صبغة ليزرية مذابة في مذيب مناسب , بوليمر وجسيمات نانوية . استخدمت صبغة الرودامين ب Rhodamine B وصبغة ستايرل 9 م Styryl 9M الليزرية مذابتان في الكلوروفورم , بوليمر بولي مثيل ميتا اكريليت PMMA وجسيمات ثنائي اوكسيد التيتانيوم TiO2المايكروية , وجسيمات الفضة Ag , وجسيمات اوكسيد الخارصين النانوية ZnO , وجسيمات اوكسيد الحديد Fe3O4 النانوية , في تحضير الاوساط الفعالة لليزر العشوائي . درست خواص الامتصاص والفلورة الطيفية لصبغة Rhodamine B الليزرية في الايثانول مرة وفي الكلوروفورم مرة اخرى . درس تاثير نوع المذيب في الخصائص الطيفية ووجد ان مذيب الكلوروفورم هو مذيب مثالي بسبب خواص الامتصاص والفلورة المستحصلة عند استخدامها . درست الخواص الطيفية لبوليمر PMMA مذابا في الكلوروفورم وكذلك محاليل جسيمات TiO2 في الكلوروفورم بتراكيز مختلفة. درست خواص الامتصاص والفلورة الطيفية لمزيجات مختلفة بنسب مختلفة لكل من صبغة Rhodamine B الليزرية مذابة في الكلوروفورم , بوليمر PMMA وجسيمات TiO2 المايكروية , ووجد ان الجسيمات المايكروية وصبغة الليزر يعززان خصائص الامتصاص والفلورة . اضيفت جسيمات Ag , ZnO وFe3O4 النانوية الى مزيج (10 - 3 mol/l من صبغة Rhodamine B الليزرية في الكلوروفورم , 0.1 gm من بوليمر PMMA ) باوزان مختلفة .درست خواص الامتصاص والفلورة الطيفية لهذه المزيجات وقورنت مع تلك المزيجات المحضرة باستخدام صبغة Styryl 9M الليزرية . استنتج ان صبغة Rhodamine B تمتلك شدة فلورة اعلى من تلك في Styryl 9M .درست الخواص البصرية الخطية للمزيجات المحضرة اعتمادا على خصائص الامتصاص والفلورة الطيفية لهذه المزيجات . حضرت نماذج الاغشية الرقيقة لهذه المزيجات ودرست خصائص الامتصاص والفلورة الطيفية , الخواص البصرية الخطية لهذه الاغشية الرقيقة المحضرة .قيست الخواص البصرية اللاخطية لنماذج الاغشية الرقيقة باستخدام منظومة Z - scan ذات الفتحة المغلقة وذات الفتحة المفتوحة وتم الاستنتاج ان القيم العالية للوزن الجزيئي للجسيمات النانوية تزيد المقطع العرضي للاستطارة وهي السبب الرئيسي لتناقص النفاذية النسبية لهذه النماذج . تم استخدام منظومة مجهر المسح الالكتروني SEM لدراسة توزيع الجسيمات النانوية وحجم تجمعات الجسيمات النانوية العنقودية والمسافة بين تجمعين متجاورين . تم استخدام منظومة تحليل العناصر EDX لدراسة اوزان المكونات في نماذج الاغشية الرقيقة . اجريت فحوصات حيود الاشعة السينية XRD لنماذج الاغشية الرقيقة المحضرة ووجد ان الجسيمات النانوية تسبب اشارات حيود كثيفة . | The active medium for random laser is usually consists of laser dye dissolved in appropriate solvent , polymer and nanoparticles .The Rhodamine B and Styryl 9M laser dyes dissolved in chloroform , the PMMA polymer and the TiO2 microparticles , silver Ag , ZnO and Fe3O4 nanoparticles had been used in preparation of the active media for the random laser . The absorption and fluorescence spectral characteristics for the Rhodamine laser dye dissolved in ethanol in one time and in chloroform in other time . The effect of solvent type in the spectral characteristics had been studied and it is found that the chloroform solvent is the ideal one because of the highest absorption and fluorescence properties obtained when using it .The spectral properties for the PMMA polymer dissolved in chloroform and the solutions TiO2 microparticles in chloroform at different concentrations had been studied .The absorption and fluorescence spectral characteristics for the different mixtures of different concentrations of Rhodamine laser dye dissolved in chloroform ,PMMA polymer and TiO2 microparticles , had been studied and it has been found that the microparticles and the laser dye consolidate the absorption and fluorescence characteristics .The Ag , ZnO and Fe3O4 nanoparticles had been added to the mixture of (10 - 3 mol/l of Rhodamine B laser dye in chloroform ,0.1 gm of PMMA polymer ) at four different weights . The absorption and fluorescence spectral characteristics for these mixtures had been studied and compared with those mixtures prepared with the Styryl 9M laser dye .It can be concluded that the Rhodamine B has more fluorescence intensity than Styryl 9M. The linear optical properties for these prepared mixtures had been studied depending on the absorption and fluorescence spectral characteristics for these mixtures. The thin film samples of these liquid mixtures had been prepared . The nonlinear optical properties of thin film samples had been measured using Z - scan setup of closed aperture and open aperture and it can be concluded that the higher values of molecular weight of nanoparticles , increases the scattering cross - section which is the main reason to decrease the normalized transmittance for these samples. The SEM had been used to study the distribution of the nanoparticles and the size of the nanoparticles clusters and the distance between two adjacent clusters .The EDX analyzer had been used to study the weights of each component in thin film sample. The XRD had been taken for the prepared thin film samples and it can be found that the nanoparticles causes an intense diffraction signals. The absorption and fluorescence spectral characteristics , linear optical properties for these prepared thin films had been studied

تاثير الفلور على الخواص التركيبية الالكترونية والكهربائية لشريط الكرافين باستخدام النموذج الهاملتوني الرياضي == The Effect of Fluorine on the Structural, Electronic and Electrical Properties of Graphene Sheet by Using the Mathematical Hamiltonian Model

Author name: حكيمة سلمان جبر مرشد
Supervisor name: حامد ابراهيم عبود محمد التميمي
General topic: Physics
Specific topic: Electronics Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: هذه الاطروحة دراسة نظرية للخواص التركيبية, الالكترونية والكهربائية لشريحة الكرافين النقي باستعمال النموذج الهاملتوني الرياضي, وتحديد تاثير عدد مختلف من ذرات الفلور المضافة بدلا من ذرات الكاربون في الشريحة على تلك الخواص. ابتداءا تم الحصول على استرخاء للتراكيب المدروسة بتطبيق الدالة الهجينة ذات المعاملات الثلاث لي - يانغ - بار من نظرية دالة الكثافة في حزمة برامج كاوس 09 تم الحصول على استرخاء التراكيب بتطبيق تقريب الكثافة الموضعية في برنامج .SIESTA trunk - 462 ان جميع حسابات الخواص الكهربائية تم اجراؤها باستعمال برنامج .Gollum وتم الحصول على استرخاء جيد للتراكيب المدروسة, حيث ان قيم الزوايا C - C, C - C=C ,C=C في شريحة الكرافين النقية تتفق مع تلك في تراكيب الحلقات الكاربونية. ان اضافة ذرات الفلور بدلا من ذرات الكاربون لتشكيل الشرائح المطعمة ليس له تاثير واضح على تلك الزوايا مع ملاحظة التفاف طفيف في حلقات الفينيل عند مناطق الارتباط مع الحلقات المطعمة والتي سببهزاوايا انحناء بين الذرات المختلفة نتيجة لاختلاف الكتل الذرية والكهروسالبية لذرات الفلور والكاربون. تبين النتائج ان الطاقة الكلية لشرائح الكرافين المدروسة تتناقص مع زيادة العدد الكلي للالكترونات في الشريحة, ان الطاقة الكلية هي انعكاس لطاقة الترابط لكل شريحة. ان فجوة الطاقة المحسوبة نظريا لشريحة الكرافين النقية هي فجوة طاقة صفرية, وان جميع الشرائح المطعمة تمتلك فجوة طاقة صغيرة مع عدم وجود اي قاعدة لخفض او ارتفاع فجوة الطاقة مع زيادة عدد ذرات الفلور في الشريحة. ان حسابات المدار الجزيئي العلوي المشغول والمدار الجزيئي السفلي غير المشغول تبين ان طاقات المدار الجزيئي السفلي غير المشغول هي اعلى من طاقات المدار الجزيئي العلوي المشغول وهذا يعطي هذه التراكيب المدروسة ان تمتلك قابلية عالية لنقل الالكترون. كما ان طاقة المدار الجزيئي العلوي المشغول تزداد خطيا مع زيادة عدد ذرات الفلور في الشريحة. وبينت النتائج ان شريحة الكرافين النقي تمتلك قيم كبيرة للتوصيلية الكهربائية والحرارية مقارنة مع الشرائح المطعمة وذلك لكون الكرافين النقي يمتلك قنوات مفتوحة متعددة لنقل الالكترون, هذه القنوات تتناقص خطيا مع زيادة عدد ذرات الفلور في الشريحة. لقد لاحظنا ان شريحة الكرافين النقي هي اكثر مرونة من الشرائح المطعمة نتيجة العدد المحدد من الحالات والناشئ من كثافة الحالات غير الصفرية لشريحة الكرافين النقية, وهذا ياتي نتيجة للاختلاف في الاتحاد الخطي للمدارات الذرية لتشكيل مدارات جزيئية في كل من الشريحة النقية والشرائح المطعمة. ان شريحة الكرافين النقي تمتلك معامل انتقال قيمته واحد نتيجة لعدم وجود منطقة استطارة في شريحة الكرافين النقي, ان جميع موجة الالكترون الساقطة سوف تنتقل من القطب الايسر الى القطب الايمن, وان اضافة ذرات الفلور سيقود الى ظهور مساحات كمناطق استطارة تخفض معامل انتقال الالكترون. في الدراسة الحالية, تم تحليل قياسات تيار - فولتية للشرائح النقية والمطعمة, لقد لاحظنا ان شريحة الكرافين النقية تبين مميزات تيار - فولتية مشابهة بشكل كبير الى نوع الممانعة, وان هذا السلوك لمثل هذا التركيب النانوي يخفض تماما تاثيرات الحرارة العالية التي تظهر في الاجهزة الماكروية. ان الشرائح المطعمة تمتلك تقريبا منحني تيار - فولتية مشابهة بالسلوك الى الشريحة النقية مع استجابة واطئة للتيار المقابل لفولتية الانحياز الامامي والعكسي. | This dissertation is a theoretical study of structural, electronic and electrical properties of pure graphene sheets using a mathematical Hamiltonian model, and determine the effect of various number of fluorine atoms added in place of carbon atoms in the sheet on these properties. The studied structures are initially relaxed by employing the hybrid functional three parameter Lee - Yang - Parr B3LYP density functional theory at Gaussian 09 package of programs, and then the structures are relaxed by employing the local density approximation LDA/Single Zeta SZ at the SIESTA - trunk - 462 program. All calculations of electrical properties are carried out using Gollum program. The results showed good relaxation obtained for the studied structures, the values angles C - C, C=C and C - C=C in pure graphene sheet are agree with those for carbon rings structures. Adding the fluorine atoms in place of carbon atoms to form the doped sheets has not significant effect on these bonds with few screw observed in phenyl rings at the contact areas with the doped rings comes from the twist angles between different atoms due to the difference of atomic mass and electronegativity of fluorine and carbon atoms. The results showed the total energy of the studied graphene sheets was decreased with increasing the total number of electrons in the sheet, total energy is a reflection of, binding energy of each sheet. The LUMO - HOMO energy gap calculated theoretically for pure graphene sheet is zero energy gap, and the other doped sheets all have small energy gap with no role of reducing or raising the energy gap with increasing the number of fluorine atoms in the sheet. The calculations of HOMO and LUMO showed LUMO energies are greater than the HOMO energies and this gave these studied structures to have high ability to electron transfer. Also, the HOMO energy is linearly increasing with increase of the number of fluorine atoms in the sheet. The results showed the pure graphene sheet has the greater values of electrical and thermal conductivity than those for doped sheets due to that the pure graphene sheet has multi open channels for electron transfer, these channels are linearly reducing with increasing the number of fluorine atoms in the sheet . Observed the pure graphene sheet is more solvability than the doped sheets due to a finite number of states from the non - zero density of states for pure graphene sheet, this comes according to the difference in the linear combination of atomic orbitals to form the molecular orbital in both pure and doped sheets . Pure graphene sheet has transmission coefficient is unity due to absent of the scattering regions in pure graphene sheet. All incident electron wave function was transmitted from left electrode to right electrode, adding fluorine atoms leads to appearing areas as scattering regions reduces the electron transmission coefficient. In present study, the I - V measurements were analyzed for pure and doped sheets, observed the pure graphene sheet show I - V characteristics very much similar to resisting type, this behavior of such nano - structure material completely reduces the high temperature effect that appeared in the old macro devices. Doped sheets have approximately I - V curve similar to behavior pure sheet with low sensing of current corresponds to bias and reverse voltages

خصائص اغشية (SnO2) 1 - x (ZnO) x النانوية التركيب الرقيقة وتطبيقاتها == Characterizations of Nanostructure (SnO2)1 - x(ZnO)x Thin Films and Their Applications

Author name: زهراء عادل جواد المعموري
Supervisor name: ناهدة بخيت حسن
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: In this work, mixed (SnO2)1 - x(ZnO)x thin films were prepared by using ahomemade chemical spray pyrolysis technique, which was a simple, inexpensive and suitable technique for large deposition area. The Tin (II) Chloride Dihydrate SnCl2.2H2O was used as a source of tin oxide particles, and the zinc acetate dehydrate Zn(CH3COO)2.2H2O was used as a source of zinc particles. Mixed (SnO2)1 - x(ZnO)x thin films with different Vol.% of (x) [0,0.2,0.4,0.6,0.8,1] has been prepared on clean preheated glass and silicon substrate at 400 ºC with atmospheric air as the carrier gas. The crystal structures were examined by X - ray diffraction analysis. The result showed that all the prepared films were polycrystalline structure. It was observed that the granular size of the SnO2 membrane was greater than the granular size of ZnO the membrane, indicating that the ZnO membrane in the selected conditions was better crystallized. The surface morphology of the deposits films have been studied by using atomic force microscope (AFM), scanning electron microscope (SEM) and energy dispersive X - ray (EDX). The grain size of the (SnO2) nanoparticles observed at the surface depended on (x), which increase with increasing of ZnO Vol.%, also the increasing ZnO Vol.% lead to an increase in the surface roughness. (EDX) shows that all the films contain the elements (Sn, Zn and O) as expected, indicating formation of the (SnO2)1 - x(ZnO)x films with high purity. The optical properties of the films, which were prepared with thickness of (190 ± 3 nm), have been determined by using the optical transmittance measurements in the spectral region from 300 to 1100 nm. Transmittance results were upper than 95% which make these films suitable for sensor applications. Direct energy gap for (SnO2) equal 3.1 eV, it increases with increasing ZnO Vol.%. The optical constants such as refractive index, extinction coefficient and dielectric constant have been calculated for the prepared films. The electrical properties included D.C conductivity and Hall effect were studied. The results showed that the prepared films were n - type, and have two activation energies (Ea1 , Ea2). It was found that the electrical D.C conductivity increased with the increase of the ZnO Vol.%. The reverse bias capacitance for (SnO2)1 - x(ZnO)x/p - Si heterojunction was measured as a function of bias voltage at frequency 1MHz, and it was indicated that these heterojunction were abrupt. The capacitance increases with increasing the reverse bias voltage, also the capacitance increases from 185 pF to 314 pF with increase of the (x), while the depletion width decreasing with increasing (x). The value of built - in potential decreases from 0.9 to 0.3 Volt with increasing of the ZnO Vol.%. The electrical characteristics of the (SnO2)1 - x(ZnO)x/p - Si heterojunction have been studied, where current - voltage characterization under dark conditions showed that forward bias current variation approximately exponentially with voltage bias. This conforms with tunneling - recombination model, and reverse bias showed little stop and soft breakdown voltage. Also the product showed that current decreases with increasing Vol.% of (x). The efficiency and the fill factor of (SnO2)1 - x(ZnO)x/ p - Si of solar cell was measured. The calculations of the solar cell show that efficiency was the highest value when mixing where we observed a clear increase in efficiency ranging from (1.87 - 5). The fill factors of the devices for all types were in range of (0.25 - 0.454). The results showed that the efficiency of the solar cell is higher than its value at x = 0.8.From the sensing properties measurements of thin films for gas ( NO2 ) show that the films was good sensor to this gas at (25 - 200)oC. The best sensitivity of mixed thin films was 81% at x=1. The variation of the operating temperature of the films have led to a significant change in the sensitivity of the sensor with an ideal operating temperature.

تصنيع وخصائص متراكبات بولي فاينيل الكحول - كاربوكسي مثيل سليلوز اكاسيد المعادن النانوية كمؤثر للمضادات البكتيرية == Fabrication and Characterizations of PVA - CMC Metal Oxide Nanocomposites as Antibacterial Effect

Author name: قيصر مهدي جبر معارج الجبوري
Supervisor name: رحيم كعيد كاظم حسين المرشدي | مجيد علي حبيب راضي الخفاجي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: في هذه الاطروحة تم تحضير نوعين من المتراكبات النانوية (PVA - CMC - ZnO) و(PVA - CMC - CuO) بطريقة صب المحلول. حضر الخليط البوليمري (بولي فينيل الكحول - كاربوكسي مثيل سليلوز) بتراكيز مختلفة من بولي فينيل الكحول (80 wt.%) وكاربوكسي مثيل سليلوز (20 wt.%) وكذلك تم اضافة اكاسيد الزنك واكاسيد النحاس النانوية للخليط البوليمري بنسب مئوية مختلفة وهي (3,6,9,12) . تمت دراسة تاثير كل من جسيمات اوكسيد الزنك واوكسيد النحاس النانوية على الخواص التركيبية والكهربائية (المستمرة والمتناوبة) والبصرية للخليط البوليمري (PVA - CMC) بتراكيز مختلفة. وتم تصنيع متحسسات الرطوبة ، مضادات البكتيريا ومواد كهروضغطية كتطبيقات.لقد اظهرت صور المجهر الضوئي وصور مجهر الماسح الالكتروني ان كل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية تتوزع بشكل متجانس في الخليط البوليمري . واظهرت منحنيات تحويلات فورير للاشعة تحت الحمراء انه لا يوجد تفاعل كيميائي بين الخليط البوليمري والجسيمات النانوية المضافة. تم حساب الخواص الكهربائية المستمرة للمتراكبات النانوية لتراكيز ودرجات حرارة مختلفة.وقد بينت النتائج ان التوصيلية الكهربائية المستمرة للخليط البوليمري (PVA - CMC) ازدادت بزيادة تراكيز كل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية ودرجات الحرارة.وقد تبين ان طاقة التنشيط قلت بزيادة تراكيز كل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية. درست الخواص الكهربائية المتناوبة في مدى تردد (100Hz - 5MHz) في درجة حرارة الغرفة. اظهرت النتائج التجريبية ازياد كل من ثابت العزل الكهربائي وفقدان العزل الكهربائي والتوصيلية الكهربائية المتناوبة للخليط البوليمري (PVA - CMC) بزيادة تراكيز كل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية.في حين يقل كل من ثابت العزل الكهربائي وفقدان العزل الكهربائي للمتراكبات النانوية (PVA - CMC - ZnO) و(PVA - CMC - CuO) بزيادة تردد المجال الكهربائي المسلط , كما تزداد التوصيلية الكهربائية المتناوبة بزيادة التردد. وقد بينت النتائج التجريبية للخواص البصرية للمتراكبات النانوية (PVA - CMC - ZnO) و(PVA - CMC - CuO) زيادة الامتصاصية ومعامل الامتصاص ومعامل الخمود ومعامل الانكسار وثوابت العزل الحقيقي والخيالي للخليط البوليمري (PVA - CMC) بزيادة تراكيزكل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية. في حين تقل النفاذية وفجوة الطاقة للانتقال غير المباشر(المسموح والممنوع) بزيادة تراكيزكل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية. لقد بينت نتائج تطبيقات متحسسات الرطوبة للمتراكبات النانوية (PVA - CMC - ZnO) و(PVA - CMC - CuO) ان المقاومة السطحية تقل بزيادة التراكيز المضافة والرطوبة النسبية. وكنتيجة لذلك، فانها تمتلك حساسية عالية للرطوبة. اختبرت المتراكبات النانوية (PVA - CMC - ZnO) و(PVA - CMC - CuO) كمضادات لبكتيريا موجبة غرام (المكورات العنقودية الذهبية) وسالبة غرام (الاشريشيا القولونية). اظهرت النتائج ان منطقة التثبيط تزداد بزيادة تراكيز كل من اكاسيد الزنك النانوية واكاسيد النحاس النانوية.كما بينت نتائج تطبيقات المواد الكهروضغطية للمتراكبات النانوية (PVA - CMC - ZnO) و(PVA - CMC - CuO) ان المقاومة الكهربائية تقل بزيادة التراكيز المضافة والحمل المطبق. وكنتيجة لذلك، فانها تمتلك حساسية عالية للاجهاد الميكانيكي. | In this thesis the two types of (polyvinyl alcohol - Carboxymethyl cellulose - Zinc oxide) and (polyvinyl alcohol - Carboxymethyl cellulose - Copper oxide) nanocomposites have been prepared by solution casting method. The (PVA - CMC) blend was prepared for different concentrations (80 wt.%)PVA and (20 wt.%) CMC as well Zinc oxide and Copper oxide nanoparticles (NPs) were added to (PVA - CMC) blend with different weight percentages as (3,6,9 and 12) wt.%.The effect of Zinc oxide and Copper oxide nanoparticles additives on structural, (D.C and A.C) electrical and optical properties of (PVA - CMC) blend have been studied. Humidity sensors, antibacterial activities and piezoelectric applications have been fabricated. Optical microscope and scanning electron microscope images indicate that the Zinc oxide and Copper oxide nanoparticles additives distribution was homogeneous in the blend. FT - IR indicate that no change on chemical structures between the blend and the additives.The D.C electrical properties of (PVA - CMC - ZnO) and (PVA - CMC - CuO) nanocomposites were investigated with different additive concentrations and temperatures. The results showed that D.C electrical conductivity of (PVA - CMC) blend increases with increasing of Zinc oxide and Copper oxide NPs concentrations and temperatures. The activation energy decreased with increased the concentration of the Zinc oxide and Copper oxide NPs. A.C electrical properties of these nanocomposites were studied in frequency range (100Hz - 5MHz) at room temperature. The experimental results showed that the dielectric constant, dielectric loss and A.C electrical conductivity of (PVA - CMC) blend increased with increasing the Zinc oxide and Copper oxide NPs concentrations. The dielectric constant and dielectric loss of (PVA - CMC - ZnO) and (PVA - CMC - CuO) nanocomposites decreased with increasing of the frequency of applied electric field, while A.C electrical conductivity increases with increasing of frequencies. The experimental results of optical properties for (PVA - CMC - ZnO) and (PVA - CMC - CuO) nanocomposites showed that the absorbance, absorption coefficient, extinction coefficient, refractive index, real and imaginary dielectric constants of (PVA - CMC) blend increased with increasing of the additive of Zinc oxide and Copper oxide NPs concentrations, while the transmittance and (allowed and forbidden ) energy gap decreased with increasing of the Zinc oxide and Copper oxide NPs concentrations. The results of applications for (PVA - CMC - ZnO) and (PVA - CMC - CuO) nanocomposites as humidity sensors showed that the surface resistance decreases with increasing of additive concentrations and relative humidity. As a result, humidity sensors have higher sensitivity for humidity. The antibacterial properties of the (PVA - CMC - ZnO) and (PVA - CMC - CuO) nanocomposites tested against gram - positive (S. aureus) and gram - negative (E. coli) bacterial. The results showed the inhibition zone increased with increasing of the concentrations of Zinc oxide and Copper oxide NPs. The results of applications for (PVA - CMC - ZnO) and (PVA - CMC - CuO) nanocomposites as piezoelectric showed that the electrical resistance decrease with increasing of additive concentrations and applied load. As a result, pressure sensors have higher sensitivity for mechanical stress.

تحضير متراكبات PANI - MWCNTs لتطبيقات الخلايا الشمسية == Preparation of PANI - MWCNTs composite for Solar Cells Applications

Author name: محمد سامي عبد علي خضير
Supervisor name: رحيم كعيد كاظم حسين المرشدي | محمد هادي شنين عبد علي
General topic: Physics
Specific topic: Solar Energy Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: في هذه الدراسة تم تحضير البولي انيلين بطريقة بلمرة الاضافة . وتم استخدام الانيلين هايدرو كلورايد مع بيرسلفت الامونيوم , حيث تم تفاعلهما معا لانتاج البولي انيلين . ومن ثم تم تشويب البوليمر بانابيب الكاربون النانوية المتعددة الجدران بالنسب ( 1% , 3% , 5% ) وتحضير اغشية رقيقة منهما , على قواعد من الزجاج والسليكون عند درجة حرارة الغرفة . اظهرت نتائج حيود الاشعة السينية ان الاغشية المحضرة هي ذات تركيب عشوائي , وان التشويب لم يؤثر على تركيب البولي انيلين كما تم تشخيص البوليمر المحضر والاغشية المحضرة منه بواسطة طيف الاشعة تحت الحمراء لمعرفة المجاميع الفعالة للاواصر الكيميائية , اظهرت نتائج التحليل ان البوليمر المحضر هو بولي انيلين حيث تم مقارنة النتائج وكانت مطابقة للمادة الاصلية . وتبين من الفحص ايضا ان التشويب لم يؤثر على خصائص البوليمر وان المادتين كان حضورهما معا وتم فحص طبوغرافية السطح للاغشية الرقيقة باستخدام تقنية مجهر القوة الذرية ( AFM) , واظهرت النتائج ان جميع الاغشية المحضرة ذات تجانس جيد وان معدل الخشونة وقيم مربع معدل الجذر ( RMS ) ومعدل الحجم الحبيبي تزداد مع زيادة التشويب بانابيب الكاربون النانوية (MWCNTS ) . تم دراسة الخصائص البصرية من خلال قياس طيف النفاذية كدالة للطول الموجي في مدى الطول الموجي ( 110 - 200 نانومتر ). اظهرت النتائج ان قيم الامتصاصية ومعامل الانكسار للاغشية النقية والمشوبة تزداد مع زيادة نسبة التشويب , وكذلك زيادة معامل الامتصاص مع زيادة نسبة التشويب وان فجوة الطاقة تقل مع زيادة نسبة التشويب مما يجعل المادة مناسبة لاستخدامها في تطبيقات الخلايا الشمسية . بالاضافة الى ذلك تم دراسة الخصائص الكهربائية والمتضمنة التوصيلية الكهربائية المستمرة وقياسات هول . اظهرت النتائج ان التوصيلية الكهربائية تزداد مع زيادة نسبة التشويب , وان المادة تمتلك طاقة تنشيط واحدة تقل مع زيادة نسبة التشويب , كما واظهرت نتائج قياسات تاثير هول ان المادة هي من النوع الموجب p - type .تم تحضير المفرق الهجين (PANI : MWCNTS/Si ) بتراكيز مختلفة وكتطبيق عملي على استخدامات المادة تم تصنيع خلية شمسية من اغشية المادة النقية والمشوبة. وتم دراسة كفاءة هذه الخلية حيث اظهرت النتائج ان الكفاءة تزداد مع زيادة نسبة التشويب , وان كفاءة الخلية الشمسية ولجميع النسب تكون ثابتة ولا تتاثر بتغير العامل الزمني حيث قيست الكفاءة لثلاثة اشهر مختلفة باختلاف درجات الحرارة . واظهرت خصائص ( التيار - الجهد ) للخلية الشمسية بان التشويب بانابيب الكاربون النانوية المتعددة الجدران يزيد من كفاءة الخلية الشمسية بواسطة عرقلة اتحاد الالكترون مع الفجوة وزيادة اداء النبيطة بسبب الزيادة العالية في تيار دائرة القصيرة ( Isc ) وفولتية الدائرة المفتوحة ( Voc) وقد وجد ان اعظم كفاءة كانت عند نسبة التشويب (% 5) وكانت قيمتها ( 5.7%) . كما وتم قياس الكفاءة مع تغير العامل الزمني لمعرفة مدى استقرارية كفاءة الخلية حيث تم قياس الكفاءة لثلاثة اشهر مختلفة ( 10 و12 و2 ) وقد وجد ان التغير الزمني لايؤثر على كفاءة الخلية الشمسية . كما وتم استخدام شدات متغيرة حيث قيست الكفاءة وبقية المتغيرات للشدات ( mW/cm2100 و50 و25 ) , وتبين ان كفاءة الخلية الشمسية تزداد مع نقصان شدة الضوء الساقط . | In this study, polyaniline was prepared by polymerization additive method . Aniline hydrochloride was used with ammonium persulfate and they are combined to produce polyaniline and then doping it with multi - walled carbon nanotubes with ratios ( 1% , 3% ,5% ), and preparation of thin films by spin coating technique on glass and silicon substrate at room temperature . The X - Ray diffraction (XRD) results showed that the prepared films are amorphous, the results showed that the doping did not affect on the synthetic properties of polyanyline. The prepared polymer and thin films prepared were analysized by (FT - IR) to determine the active groups of the chemical bonds, the results of the analysis showed that the polymer is polaniline where the results were compared and were identical to the original material , also showed that the doping did not affect the characteristics of polyaniline . The surface morphology of thin films was examined using the atomic force microscope technique (AFM). The results showed that the prepared were homogeneous.The roughness average, the Root Mean Square (RMS) value and the average grain size increased with the increasing of (MWCNTs) concentration. The optical properties of the prepared films, were investigated by obtaining the transmittance spectrums in the UV - VIS regions as a function of wavelength from 300 nm to 1100 nm. The values of absorbance and the refractive index for the of pure and doping films increasing with increasing of doping ratio . The energy gap decreasing with the increasing of the doping ratio , makes the material suitable for using application of solar cells . Electrical properties including D.C conductivity and Hall measurements of the films were studied.The results showed that electrical conductivity increasing with increasing the rate of doping , and that the material has one activation energy decreasing with increasing of doping ratio . The results of the Hall effect measurement showed that the materil was p - type . PANI : MWCNTS/Si heterojunctions have been prepared at different concentrations. (I - V) characteristics show that the MWCNTs - doping increases the energy conversion efficiency by retarding the electron - hole recombination and the improved device performance is caused by the high short - circuit current (Isc) and open circuit voltage (Voc) and found that the highest efficiency (η) at doping ratio 5% is 5.7% The efficiency of the solar cell was also studied and the efficiency of the time factor was measured. It was measured for three months (October, December and February) , found that efficiency increases with increasing the rate of doping and the change in the time factor does not affect on the efficiency of the cell. A variable intensity was used to measure efficiency (25, 50 and 100 mW /cm2). The efficiency of the solar cell was increased with the decreasing of light intensity for incident light.

موديل رياضي لحساب الجرعة الاشعاعية المستخدمة لعلاج الخلايا الخبيثة وتطوير معدل تحسين الحساسية بمساعدة الجسيمات النانوية == Mathematical Model for Calculating Radiation Dose used to Treat Malignant Cells and Improved SER with Aid of Nanoparticles

Author name: طالب عبد الرضا عبد الواحد
Supervisor name: نهاد عبد الامير صالح المعموري
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: Radiotherapy is one of the steps for cancer treatment, which involves using high energy photons produces from radioactive source or linear accelerator. Because of limited tolerance of human organs for radiation appears a need to enhance radiotherapy by increasing absorbed dose inside human target. One of the most promising methods currently used involving contrast agent like nanoparticles to enhance the radiation tolerance inside the tumor. Interaction between high energy photon (E> 1.022MeV) and nanoparticle inside specific organ produces electron and positron according to pair production. This thesis aims to create an enhancement in the cross section of the tumor cells by nanoparticles like gold nanoparticles, gadolinium nanoparticles, silver nanoparticles and titanium nanoparticles. The goal behind using nanoparticles is to increase the dose received by the tumor cells without increasing the dose received in surrounding healthy tissue.The importance of this method is to reduce the number of radiotherapy sessions (time) that are given to patients with cancer then result in reducing the side effects of radiation therapy. This is done by increasing sensitivity enhancement ratio (SER). SER is the ratio of survival cells to initial cells for irradiation without and with nanoparticles. The direct injection of nanoparticles into malignant tumor is considered a perfect method to increase (SER).Each gold, gadolinium, silver and titanium nanoparticles were used as radio - sensitizing agents to increase (SER), the greater number of malignant cells destroyed by radiation with the aid of nanoparticles produced the greater the amount of (SER). The contrast agent loaded to malignant tumor interacts with X - ray photons whose energy ranged from 2MeV to 20 MeV. This thesis recorded many SER depending on the typeof contrast agent and energy of X - ray. Each nanoparticle was irradiated with photons energy 2MeV, 4Mev, 6 MeV, 8 MeV, 10 MeV, 15 MeV, 20MeV, respectively. The same approach was applied with each of brain, breast, lung, prostate, and ovary tumors.™ The brain results showed an average enhancement in SER as follows : 11.63 when using TiNPs, 13.24 with using AgNPs, 13.72 with using GdNPs, 14.26 with using AuNPs. The breast shows average SER results as coming 10.79 to TiNPs, 12.45 to AgNPs, 12.95 to GdNPs finally 13.50 to AuNPs and average SER for lung as next 10.86 to TiNPs, 12.51to AgNPs, 13.03to GdNPs and 13.59to AuNPs. Average SER results of ovary as coming 10.85with TiNPs, 12.52 with AgNPs, 13.02 with GdNPs and 13.58 with AuNPs. Final average SER to prostate arranged as 10.83 to TiNPs, 12.47 to AgNPs, 12.93 to GdNPs finally 13.50 to AuNPs. From these results can be concluded higher SER response of organs to nanoparticles with high energy X - ray are arranged as follow in first degree AuNPs, secondly GdNPs, third AgNPs and finally TiNPs.

استخدام تقنيات فيزيائية لتشخيص سرطان الثدي في نماذج من الدم == Using of Physical Techniques for Diagnosis of Breast Cancer to Blood Samples

Author name: شيماء عواد كاظم حميدي
Supervisor name: خالد حسين هاتف العطية
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: Breast cancer is one of the most common malignancies in women. In this thesis we employ fourth techniques for diagnosing the breast cancer early; UV - visible spectroscopy, Fourier Transform InfraRed (FTIR - ATR) technique, Atomic Absorption Spectrophotometer (AAS) and Solid - State Nuclear Track detectors (SSNTDs) (CR - 39NTD),was took blood samples to females whom newly diagnosis breast cancer ,control groups and females whom took chemotherapy at aged (33 - 74) years in the Middle Euphrates Center Cancer of Al Najaf province : UV - visible spectroscopy technique : we have found fourth types of bands in the spectra of this technique for female of breast cancer ,female who take chemotherapy and healthy subjects . First, second and third band regions cover the ultraviolet behavior of proteins but fourth band does not show absorbance of proteins, we noted appeared and disappeared some bands also increased the absorbance in patients which are represented early an evidence for diagnosing breast cancer.Fourier Transform Infrared (FTIR - ATR) technique : By employed this technique we found the absorbance of patients with new breast cancer larger than the absorbance of health subjects was found high statistically significant for wavenumber(ʋ) cm - 1 (1246.1 - 1241.4cm - 1) , (1536.4 - 1530.3cm - 1), and ( 3297.3 - 3277.0cm - 1) where was p - value < 0.05 while (698.6 - 667.8 cm - 1) and (2937.8 - 2925.5 cm - 1) was non - significant statistically p - value was larger than 0.05 also getting shift in wavenumber between two cases.Atomic Absorption Spectrophotometer (AAS) technique : by using itcalculated the levels of the (trace elements) metal ions(Cu ,Zn ,Fe ,Mnand Ni) has a potential role in early detection and monitoring of breastcancer where we found high increased in concentration of Iron in patientsand less in copper compared with health while high decreased inconcentration in Zinc, Manganese and Nickel in patients compared withhealth .Solid - State Nuclear Track detectors (SSNTDs) technique : we calculated by using it the mean of concentration of radon and activity of radon for females of control groups , newly diagnosis breast cancer and females whom took chemotherapy which was ARn (Bq) health group(0.097895) > ARn (Bq) new case(0.079873) > ARn (Bq) take chemotherapy(0.036443) > . We have found the Levene's Test (F) was Significant for the comparative between normal case and the case of take chemotherapy( .012) less than 0.05, the Levene's Test (F) was higher significant for the comparative between new case of breast cancer and the case who take chemotherapy (.001) much less than 0.05 while non - significant statistically between normal and new case(.731) larger than 0.05.

دراسة بعض الخصائص الفيزيائية p - MgxZnO1 - x/n - Si للكاشف الضوئي والمتحسس الغازي == Study of Some Physical Properties of p - MgxZnO1 - x/n - Si Photodetector and Gas Sensor

Author name: سليم حمزة طرير جبر
Supervisor name: عبد العزيز عبيد موسى العكيلي
General topic: Physics
Specific topic: Physics
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: في هذا العمل تم تحضير اغشيةMgxZnO1 - x باستخدام تقنية الرش الكيميائي الحراري وهي طريقة ملائمة ومناسبة للترسيب على مساحات كبيرة . وتم انماء مزيج محاليل MgxZnO1 - x بنسب حجمية مختلفة (0 ،30 ،50 ،70 و90)% ومرسبه على قواعد زجاجية وسليكونية وعند درجات حرارة مختلفة (400، 450 و500) درجة مئوية وتم تثبيت السمك من خلال تثبيت عدد الرشات وكان سمك جميع الاغشية يتراوح بين (5±80) نانومتر وقد تم اجراء الرش باستخدام غاز النيتروجين . تم تشخيص التركيب البلوري للاغشية بتقنية حيود الاشعة السينية (XRD) واظهرت النتائج ان جميع الاغشية المحضرة كانت متعددة التبلور واظهرت تحسن في البنية البلورية من خلال تغير درجات الحرارة. درست طبوغرافية السطح للاغشية باعتماد مجهر القوى الذرية (AFM) والمجهر الالكتروني الباعث الماسح FESEM)) ومشتت الطاقة للاشعة السينية (EDX). ان زيادة نسبة محتوى المغنيسيوم في الاغشية ادت الى نقصان خشونة السطح . وان (EDX) اظهرت احتواء الاغشية على عناصر( Si، N ،O ، Zn وMg ) كما هو متوقع . تم قياس استطارة رامان لاغشية MgxZnO1 - x/n - Si الرقيقة لمختلف نسب محتوى المغنيسيوم ، حيث اظهرت شدة ذات حزمتين cm - 1(601 و1202) المقابلة الى انماط استطارة رامان ذات الرتبة الاولى العليا E_2^high, ونمط الرتبة الثانية هو A1(LO) وهو نمط الرتبة الاولى بالنسبة لاوكسيد الزنك، اذ انه بزيادة محتوى المغنيسيوم الى اكثر من(50) % فان نمط الرتبة E_2^high سوف تنخفض شدته. وتمت دراسة الخصائص البصرية للاغشية المحضرة من خلال قياس النفاذية البصرية في المنطقة الطيفية (700 - 300) نانومتر، وكانت نتائج النفاذية تتراوح من (89 - 65)% عند زيادة محتوى المغنيسيوم من (30 - 90)% في درجة حرارة (400) درجة مئوية ، وتزداد النفاذية اكثر عند زيادة درجة الحرارة الى (500) درجة مئوية لتصبح من(95 - 84) % عند محتوى المغنيسيوم نفسه مما يجعلها ملائمة لتطبيقات المتحسسات الغازية. وتم قياس الامتصاصية والانعكاسية لجميع الاغشية وكانت تتناقص بارتفاع درجات الحرارة، بالاضافة الى ذلك تم قياس معامل الامتصاص لجميع الاغشية وكانت قيمته اعلى من cm - 1 (104) . وحسبت فجوة الطاقة المباشرة لاوكسيد الزنك النقي وكانت (3.18 ،3.21 و3.19) الكترون فولت التي تقابل درجات الحرارة (400، 450 و500) درجة مئوية على التوالي . وتم حساب الثوابت البصرية كمعامل الانكسار ومعامل الخمود وثابت العزل الحقيقي والخيالي لجميع الاغشية المحضرة. وتم حساب فجوة الطاقة البصرية من خلال مطياف الاستضائية وكانت القيم تتراوح بين (3.558 - 3.531) الكترون فولت، تم دراسة الخصائص الكهربائية كالتوصيلية الكهربائية المستمرة وتاثير هول، واظهرت نتائج قياسات تاثير هول ان غشاء اوكسيد الزنك النقي من النوع السالب (n - type) اما اغشية MgxZnO1 - x فهي من النوع الموجب(p - type) وتمتلك طاقتي تنشيط (Ea1 وEa2). تم قياس سعة كاشف MgxZnO1 - x /n - Si كدالة لفولتية الانحياز العكسي وبتردد يتراوح بين 0.6) (1 - ميكا هيرتز، واشارت تلك النتائج الى ان كاشف المفرق الهجين من النوع الحاد. كما وجد ان جهد البناء الداخلي تنخفض قيمته بزيادة محتوى المغنيسيوم وتزداد عند نسبة محتوى المغنيسيوم (90)% . واظهرت خصائص تيار - فولتية لكاشف MgxZnO1 - x /n - Si ان تيار الظلام الامامي يتغير اسيا مع فولتية الانحياز، كذلك لوحظ تناقص عامل المثالية وتيار الاشباع العكسي بزيادة محتوى المغنيسيوم في الاغشية في حين يزداد عند درجات الحرارة العالية كما تم في هذا العمل دراسة الخصائص الطيفية للكاشف ووجد ان قيم الاستجابة الطيفية ، الكفاءة الكمية والكشفية النوعية تزداد بزيادة نسبة محتوى المغنيسيوم ، بينما القدرة المكافئة للضوضاء تنخفض بزيادة محتوى المغنيسيوم . وظهرت قمم الاستجابية عند الطول الموجي (450) نانومتر وكانت تساوي الى (13.51) A/W وعند الطول الموجي (900) نانومتر وكانت تساوي الى (36.83)A/W . كما تم حساب الربحية للكاشف ووجد ان الكسب يزداد عند ارتفاع درجات الحرارة . وتم قياس تحسسية المتحسس لغاز NO2 في الهواء المحيط في منظومة استشعار الغاز . وتم فحص جميع العينات في نسبة %3 NO2 : الهواء وفولتية انحياز (6 (فولت. وكانت افضل نسبة اشابة لمحتوى المغنيسيوم %(5x=) ، ودرجة حرارة القاعدة السليكونية هي (400) درجة مئوية ودرجة حرارة تشغيل (200) درجة مئوية. وكانت اقصى تحسسية عند هذه النسبة هي (90.80)% وسرعة زمن الاستجابة هو (15.3) ثانية وزمن الاسترجاع هو (42.3) ثانية. | In this work MgxZnO1 - x thin films have been prepared using a chemical spraying pyrolysis (CSP) technique which is an easy and suitable way of deposition over large areas. Mixed solutions have been growth at different volumetric percentages (0, 30, 50, 70, and 90)% and deposited on glass and silicon substrates at temperatures (400,450, and 500) oC. The thickness was installed by installing the number of sprays. The thickness of all the films were (80 ±5) nm, have been using nitrogen gas. The crystal structure was examined by using X - ray diffraction (XRD) technique. The results showed that all the prepared were polycrystalline films, showing improvement in the crystal structure by change at temperature. Topography of the surface of the prepared films have been studied by using atomic force microscope (AFM), field emission scanning electron microscopy (FESEM), and energy dispersive X - ray spectroscopy (EDX). The increase in the percent of Mg - content in the films lead to decrease in surface roughness. (EDX) showed that films contain elements (Si, N, O, Zn, and Mg) as expected. Raman scattering have been measured for MgxZnO1 - x/n - Si thin films at different Mg - content. It exhibits two intense bands at (601 and 1202) cm - 1, corresponding to the E_2^high first - order Raman modes, and second - order mode the A1(LO) first - order mode of ZnO. As it increases Mg - content up to (50)%,the E_2^high mode the decrease in intensity. The optical properties of the films prepared by the optical transmittance measurements in the spectral region (300 - 700) nm. The results of the transmittance rang from (65 - 89)% when increasing the Mg - content from (30 to 90)% at substrate temperature of (400)oC and increased transmittance more when increase the temperature to become (84 - 95)% at the same Mg - content, which makes it suitable for applications gas sensors. Absorbance and reflectivity have been measured which were decreases by increasing temperatures. Absorption coefficient was measured for all the films, and its value more than (104) cm - 1. Direct energy gap was calculated for pure ZnO was (3.18 and 3.21 and 3.19) eV and the corresponding to substrate temperatures (400,450, and 500) oC respectively. The optical constants such as refractive index, extinction coefficient and dielectric constant have been calculated for all preparing films. The optical energy gap was calculated by photoluminescence spectrometer were few sensitive between (3.558 - 3.531) eV. The electrical properties such as D.C electrical conductivity and Hall effect have been studied, results showed measurements Hall that the pure ZnO film was negative type (n - type), while MgxZnO1 - x films were (p - type), and have two activation energies (Ea1,and Ea2). Capacity of MgxZnO1 - x/n - Si photodetector have been measured as a function of voltage reverse bias at frequency ranges (0.6 - 1) MHz. These results indicated that the photodetector is abrupt type. It was found that the value of built - in potential, decreases with increasing Mg - content and increases when Mg - content ratio (90%). The current - voltage characteristics of the MgxZnO1 - x/n - Si under dark conditions showed that forward bias current varied exponentially with voltage bias. The ideality factor and current saturation decreased with increasing Mg - content in the films whereas increased at high temperatures has been noticed. In this work the study of the spectral characteristics of the photodetector MgxZnO1 - x/n - Si and found that the spectral response values, quantum efficiency and specific detectivity increased with increasing Mg - content ratios, while the noise equivalent power (NEP) decrease when the Mg - content is increased. The beaks response appear at (450)nm equal to (13.51) A/W, and (900) nm equal to (36.83)A/W. It has been found that the gain for the MgxZnO1 - x/n - Si increases with increasing temperatures. The sensitivity of the MgxZnO1 - x/ n - Si to (NO2) gas in air ambient has been measured in the gas sensing system. All samples were tested at a ratio 3% NO2 : air and 6V bias voltage. The best ratio dopant of the Mg - content is x=(5)%, (200)oC operating temperature, and substrate temperature (400) oC of the silicon substrate. The maximum sensitivity is (90.80) % , fast response time is (15.3s) and recovery time is (42.3s).

تحضير جسيمات ثنائي اوكسيد التيتانيوم النانوية بطريقة الصول - جل باستخدام الازالة بالليزر وتطبيقاته كاصباغ نانوية == Synthesis of TiO2 Nanoparticles by Sol - Gel Method using Laser Ablation for Nano Paint Application

Author name: زينب ناصر جميل
Supervisor name: سمر يونس طه | عدوية جمعة حيدر
General topic: Physics
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: Titanium dioxide (TiO2) nanoparticles (NPs) have been widely investigated to employ in the paint fields due to its importance as pigments. Therefore, TiO2 particles are perfect candidates in the paint industry. In addition to use nanoparticles for enhancing the local coating properties in our country.In this work, the sol - gel technique employed to prepare TiO2 nanoparticles with two procedures and two precursors (TIP and TiCl4), the obtained two phases of TiO2 (anatase and rutile), nanopaticles colloid irradiated by pulse laser ablation (PLA) for minimizing particle size. It has been fabricated a laboratory paint (TiO2/SiO2 hybrid sol - gel). Nanoparticles characterization has been carried out by different devices to study properties such as morphology, structure and optical properties, Transmission Electron Microscope (TEM) and Dynamic Light Scattering (DLS) demonstrated the size and shape of nanoparticles in the range of (3 - 40) nm spherical for anatase, while the rutile results were around (50 - 70) nm with ellipsoidal shape. Scanning Electron Microscopy (SEM), which was confirmed the results of TEM and DLS. Zeta - potential (ζ) results which were indicated the colloid stability, surface charge for the first procedure and the second procedure, anatse and rutile (+39.02, +25.68,+41.31 and+34.33) mV, respectively. The structural characteristics of TiO2 nano - powder investigated by X - ray Diffraction(XRD) to define the phases of TiO2, anatase at 500˚C , rutile at 900˚C, and Raman Spectroscopy to distinguish between crystalline phases, Raman shift resulted for anatase about (142.1,411.1,547.4 and 669.6) cm - 1, rutile (190,272,452 and 616) cm - 1. The optical properties measured by UV - Vis. Spectrophotometer to compute the energy band gap for both phases at (3.8 eV) for anatase and (3.4 eV) for rutile.The nanoparticles were mixed with coating solution (i.e. hybrid sol - gel and organosilicate nanoparticles (OSNP) in different concentrations (1%wt and 10%wt) for both anatase and rutile. Films were prepared by spin coating method which has been studied by the Energy Dispersive X - ray Spectroscopy (EDS) / Scanning Electron Microscope to define the components of concentrations, additionally, the films were studied the thickness and refractive index (n) by Spectroscopic Ellipsometry(SE) for nano - anatase (1%wt and10%wt) films thickness (128,382)nm and n equal (2.25,3.32), for nano - rutile films thickness (313.5,645.2) nm and n equal (2.5,2.8). Profilometer investigated the coating topography to demonstrate the Root Mean Square (RMS) toidentify the roughness which increased by increasing particle size. Fourier Transform Infrared (FTIR) analysis showed the strong bonds of the nanoparticles in frequency region between (400 - 1000) cm - 1 corresponds to Ti - O - Ti, also the bands at 793 and 1100cm - 1 were for a symmetric Si - O - Si stretching and vibration, respectively.Self - cleaning tests on the films were performed using Rhodamine B (RhB) as a pollution indicator. The effect of UV - irradiation on the films and contact angle measurements were studied. Anatase and rutile incorporated as a mixture with different ratios (1%.1.5% and 2%) in the local paint measurements, such as a washability and contrast test.Antibacterial activity in 10 - 5 and 10 - 3 TiO2 concentrations exhibited superior antibacterial activity with two types of bacteria, Escherichia coli (E - coli) and Staphylococcus aurous (S. aureus), respectively. TiO2 nanoparticles were more efficient as antibacterial agents with Staphylococcus aurous as compared with E - coli.

دراسة حيوية وتشخيص جزيئي لداء الاكياس العدرية في المضائف الوسطية اعتمادا على تحليل تتابع جينات rDNA - ITS1 وmtCOX1 في محافظة ذي قار == Biological Study and Molecular Identification on Hydatidosis in Intermediate Hosts Depending on Sequence Analysis for rDNA - ITS1 and mtCOX1 Genes in Thi - Qar Province

Author name: وسام جاسم حنش
General topic: Biology
Specific topic: Microbiology - Parasites
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The present study was carried out in Thi - Qar province during the period from beginning of January until the end of December 2015 to investigate the prevalence of infection with hydatidosis in human and other intermediate hosts. The molecular techniques was used to detect the strain of Echinococcus granulosus. The present study diagnosed 58 infection with hydatidosis in different organs such as liver, lungs, kidney and spleen of surgically treated patients in AL - Hussein Imam Teaching Hospital inNassiriyah city, centre of Thi - Qar province. The total number of hydatid cysts was 72 cyst in different organs with total intensity of infection 1.24. The females recorded highest percentage of infection 67.24% than males 32.76 %, and the age group 21 - 30 year showed highest percentage of infection 24.14 % . The lowest percentage recorded in age group more than 60 year 5.17 %.The results of study showed that right lobe of liver was more affected 58.62 % than left lobe 13.79 %. The percentage of left lung infection was 10.34 % while right lung 8.62 %. The total average of fertile cysts in infected organs was 81.82 % and sterile cysts 18.18 %. The highest percentage of infection was recorded in house women 87.18 %. The number of recorded cases in Nassiriyah district was 21 case with percentage of infection 36.21 %.During the same period a total of 1303, 1287, 405, 90, and 294 head from sheep, cattle, buffaloes, camels and goats were examined respectively.The percentage of infection was 7.83 %, 7.69 %, 3.46 % and 2.22 % in sheep, cattle, buffaloes and camels respectively, and no infection was recorded in goats. The intensity of infection was 4.07, 3.27, 1.64 and 2 in sheep, cattle, buffaloes and camels respectively. The results of statistical analysis showed no significant differences (P????0.05) in percentage and intensity of infection.The percentage infection of liver, lungs and both together in sheep was 5.45 %, 1.23 % and 1.15 % respectively, and there was no significant differences in percentage of infection but intensity of infection differed significantly(P????0.05). The percentage of liver, lungs, both together and spleen infection in cattle were 3.11 %, 2.95 % , 1.55 % and 0.08 % respectively while intensity of infection in liver, lungs, both together and spleen was 2.5, 2.18, 7 and 1 respectively. The percentage of liver, lungs and both together infection in buffaloes were 2.22 %, 0.99 % and 0.25 % respectively while intensity of infection in liver, lungs and both together was 1.89, 1 and 2 respectively. No significant differences in percentage and intensity of infection in camels andboth percentage and intensity of infection in liver and lungs were 1.11% and 2 respectively.High significant differences was recorded between percentage infection in males and females of animals. The percentage of infection in females were 15.87 %, 13.42 %, 6.99 % and 3.45 % in sheep, cattle, buffaloes and camels respectively. Highest percentage of infection were 0.72 %, 0.18 % and 0.46 % in males of sheep, cattle and buffaloes respectively. No infection were recorded in males of camels.T he age was effect on percentage of infection and big aging groups recorded in sheep, cattle, buffaloes and camels. The present study recorded significant differences in percentage of fertile hydatid cysts in liver and lungs of animals and highest of percentage of fertility recorded in liver and lungs of sheep 84.21 % and 79.24 % respectively and lower percentage of fertility was in liver of buffaloes 11.11% and liver of cattle 14.70 %. The lower percentage of sterile hydatid cysts was in liver and lungs of sheep 15.79 % and 20.75 % respectively and highest percentage recorded in liver of buffaloes 88.88 % and spleen of cattle 100 %.S t a tistical analysis using of ANOVAs test showed no significant differences in total length, length of blade and width for large and small protoscolices hooks of hydatid cysts isolated from liver and lungs of sheep, human, cattle buffaloes, camels and hooks of sheep which is showed genetic variations (new strain).The PCR - RFLP technique was used in identification of E.granulosus strains infecting human and intermediate hosts in Thi - Qar province. The molecular study is carried out on 75 hydatid cysts collected from human, sheep, cattle, buffaloes and camels. The DNA is extracted from protoscolices of hydatid cysts isolated from infected organs. PCR - RFLP technique showed that sheep strain G1 of E.granulosus is predominant in Thi - Qar province depending on amplification of rDNA - ITS1 gene. The PCR products in all DNA samples showed 1000 bp approximately. Alu1 endonuclease with rDNA - ITS1 demonstrated two bands 800 bp and 200 bp approximately, while Rsa1 endonuclease showed two bands 655 bp and 345 bp approximately which is similar to sheep strain genotype 1.Sequence analysis for rDNA - ITS1 gene showed the presence of sheepstrain genotype 1 which is similar 100 % to sheep strain in gene bank exceptone isolate (sheep liver) was differs from other strains in position ofnucleotide sequence. It was similar 99 % for sequence of sheep strain. Thedata base of this new strain was recorded in gene bank for DNA sequence National Center for Biotechnology Information (NCBI) and European Nucleotide Archive (ENA) for the first time globally under the name Echinococcus granulosus strain WH1AW2 (GenBank : LT547814). Polymerase chain reaction technique and sequence analysis of mtCOX1 gene showed the presence of sheep strain G1 of human, sheep, cattle, buffaloes and camels. The sequence analysis showed the genetic variation in mtCOX1 gene for hydatid cyst in infected sheep represented by point mutation type transition which caused change Adenine to Guanine, and sequence data base of the sample recorded for first time in NCBI and ENA (GenBank : LC203589). Buffaloes strain G3 isolated from human lung recorded for first time in Thi - Qar province depending on comparison of samples sequences with source strains recorded in gene bank (NCBI) using "BLAST". The size of bands for mtCOX1 gene was 450 bp in all samples

مستويات الاديبونكتين والابلين والهرمونات الاخرى والمعايير الدموية اثناء الحمل وفي مرضى متلازمة المبيض متعدد الاكياس == Adiponectin, Apelin and other Hormones Levels and Blood Indices during Pregnancy and in Patients with Polycystic Ovaries Syndrome

Author name: هناء سلمان كاظم
Supervisor name: طه جاسم الطه | علي فالح الاسدي
General topic: Biology
Specific topic: Zoology - Physiology
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The present study aimed to determine the levels of adiponectin and apelin and their relations with all parameters. Investigation in the present study included; hormones, lipid profile, liver enzymes activity and haematological profile in groups of Iraqi Basrah pregnant women during different months of pregnancy and to correlate these levels to maternal age, Body Mass Index, excepted parity and sex of fetuses and correlated with level of adiponectin and apelin hormones only and the results were compared with non - pregnant females as control group. The present study included (180) women ranging from 20 - 40 years old, out of them (70) pregnant and (20) non - pregnant women with polycystic ovary syndrome (PCOs), and (90) females non - pregnant were considered as control group. The pregnant women attended the obsteric units in the general state hospitals in Basra Governorate. They are as follows : Al - Basra General Hospital for Maternity and Childhood, Al - Mawane, Al - Fayha’a and Basra General Hospital which drain most patients from urban and rural areas. None of the selected women suffered from any type of disease. Required data were collected by the researcher depending on direct interview with women before being admitted to the study, using a questionnaire including information on age, parity, month of pregnancy, and geographical area..The Women were divided into two age group (≤ 27 and ≥28 years). Moreover, females were also divided according to BMI into normal (≤ 25), over weight (25 - 30) and Obese (≥30).The month of gestation was determined not only from the date of the women’s last menstruation (LMP) but also according to the ultrasonic reports that pregnant women had. Blood samples (10 ml) were taken from pregnant women at the end of each month of pregnancy and from control group as well as from women with PCOs. Each blood sample was divided into EDTA tube (2 ml) which was used for complete hematological picture study (RBC, Hb, PCV, PLT, WBCs count and WBCs differential count) and the plain tube (8 ml) where the serum was obtained, for biochemical study (Adiponectin, Apelin, testosterone, Progesterone, estradiol, follicular stimulating hormone, luteinizing hormone, insulin, lipid profile and liver enzymes).The results indicated that maternal age had no significant effect on the level of adiponectin, apelin, FSH and LH hormones, while the study showed a significantly effect on level of progesterone, estradiol, testosterone and insulin hormones between pregnant and non - pregnant women. Adiponectin levels decreased in pregnant and non - pregnant females with increased body mass index whereas apelin, estradiol, progesterone and insulin levels increased. When the comparison between pregnant and non - pregnant women was done, a decrease in adiponectin and apelin was noticed. Accompanied by an increase in the level of estradiol, testosterone, progesterone and insulin hormones in pregnant women compared to non - pregnant women.Women with PCOs showed low levels of both Adiponectin and apelin with high levels of Testosterone and Insulin.Results also revealed that age had no effect on total cholesterol, triglycerides, and HDL, in both pregnant and non - pregnant females, but when the BMI was taken in consideration, high levels of these parameters were found in - group of BMI (obese). In addition, the present study showed that age had no effect on liver enzymes (AST and ALT) while ALP showed that the behavior increased up as a different high body mass index in pregnant women, in comparison with the control group. However, ALP activity also increased in high BMI group.Hematological study showed that age had no effect on RBC, Platelets, and hematocrit. Similar results were found when BMI was taken in consideration. Total WBCs showed a non - significant increase in pregnant women as compared with the control group. Adiponectin levels were significantly higher in pregnant females carrying female fetuses compared to those with male fetuses, while the other hormone apelin did not differ between the two groups. The Result of the present study revealed that adiponectin was significantly decreased as apelin was significantly increased with the increased parity.

دراسة فعالية بعض مستخلصات الطحلب الاخضر Enteromorpha intestinalis (L.,1820 على الاكياس العذرية للمشوكة الحبيبية Echinococcus granulosus (Batsch,1786 وكمضادات لخط الخلايا السرطانية نوع HeLa == Study of the activity of some of the green alga Enteromorpha intestinalis (L.,1820) extracts on Hydatid cysts of Echinococcus granulosus (Batsch,1786) and as anticancer cells type HeLa

Author name: غزوان طالب نوري الجابر
Supervisor name: صبيح هليل المياح | احمد محسن عذبي
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The present study was conducted in order to evaluate the activity of green alga Enteromorpha intestinalis extracts (methanol and hexane extracts) on growth and development of hydatid cysts of Echinococcus granulosus in vitro and in vivo by using mice type Mus musculus Balb\c that in comparing with albendazole drug. Anti - cancer activity was also evaluated in vitro for both algal extracts by using HeLa cells. Chemical compositions of algal extracts were analyzed by using Gas chromatography - mass spectroscopy (Gc - mass)technique . The hydatid cysts were collected from livers and lungs of infected sheep which slaughtered in Basrah abattoir. While, The algae specimens were collected from Abu Sokhir marshland area /north of Basra. The results revealed that E.intestinalis chemical compounds are carbohydrate , alkaloids, phenols , saponins , triterpenes and sterols compounds. In vitro study showed that the 1 mg / mouse weight of albendazole drug was able to reduce the percentage of protoscolices activity to zero after the third day of treatment. While, the dose 6 98 mg / kg of methanol extract inhibited all protoscolices after five days of treatment, followed by the dose 804 mg / kg of hexan extract that inhibited all protoscolices after six days of treatment.In vivo study revealed that the methanol extract (698 mg / kg) treatment was the best in reducing the weights of organs significantly in comparison with the positive control group it was 2.192 , 0.192 , 0.434 and 0.282 g of liver, spleen, lung and kidney respectively. The methanol extract (698 mg / kg) treatment lowered the average number of hydatid cysts (2.6) more than other extracts treatments , then followed by hexane extract (804 mg / kg) treatment it was 2.8 cyst .This study has identified that the liver enzymes Aspartate transaminase (ALT) and Alanine transaminase (AST) values in the serum of positive control group were higher significantly than negative control group the value of the enzyme ALT was 79 IU / l and the value of the enzyme AST was 118.4 IU / l.All methanolic extracts groups showed a preference in enzyme's values compared with other treatments groups , the value of ALT enzyme of 698 , 688 and 678 mg / kg of methanol extract groups were 46.8 , 45.8 and 44.6 IU / l respectively, while all hexane extracts groups showed a preference in AST enzyme values compared to the other treatments groups, the value of AST enzyme of 804 , 794 and 784 mg / kg of hexane extract groups were 73.6 , 70.2 and 70.4 IU / l respectively. Found a significant increase in the number of white blood cells WBCs in a positive control group ( 4.6 × 013μ), compared with a negative control group and the other groups, While it has been found significant decrease in the Hb (5..8deciliter) and Packed cell volume (PCV) (31..%) values in positive control group as compared with control negative group. The study found that the number of white blood cells WBCs n the methanolic extract group (678 mg / kg) was 4.06 × 103 microliter was as same as in the negative control group, In contrast, hexane extract group (804 mg/ kg) has did not significant difference with negative control group in the Hb and PCV were 11.5 g / dl and 36.8% respectively .Histological study confirmed that there are the histological changes in positive control group included congestion , bleeding , degeneration , infiltration of inflammatory cells and hyperplasia. Whereas the histological changes in group treated with albendazole were bleeding, infiltration of inflammatory cells , atrophy of the glomerulus and fibrosis in some areas . In algal extracts groups the histological changes were infiltration of inflammatory cells, bleeding and congestion.The Gc mass results revealed that the ethanol extract contains loliolide , ethyl stearate , palmitic Acid , ethyl palmitate , phytol , ethyl oleate , ethylhexyladipate and squalene compounds. While, hexane extract has N, Ndimethyltetradecylamine , diisobutyl phthalate , palmitic Acid , ethyl palmitate and ethylhexyladipate compounds.Anti - cancer study showed the algal extracts have an inhibition activity against cancer cells, The half maximal inhibitory concentration (IC50) value of the methanol extract was 79.08 μ/ ml, While, the IC50 for hexane extract was 156.3 μ/ ml.

دراسة تشريحية تصنيفية لبعض من نباتات العائلة السوسبية Euphorbiaceae في العراق == Anatomical and Taxomanical study for some plant of Euphorbiaceae family in IRAQ

Author name: امل علي ياسين الحسن
General topic: Biology
Specific topic: Plant
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The study was conducted to investigate several taxonomic aspects which comprised the micro - morphological studies of epidermal layer of leaves, pollen grains, fruits and seeds.In addition to that, the anatomical and molecular studies for 12 species of Euphorbiaceae family which belonged to five genera AndrachneL. , Chrozophora L., Euphorbia L, Mercurialis L. and RicinusL., were performed. One representative species for each genuswas selected; in exception 8 species were chosen for the genus Euphorbia..The current results confirmed that the anatomical characters showed valuable taxonomic traits which can evidently be used to distinguish between species. The most prominent trait was mesophylla tissue in leaves which were observed in three categories;1 - Bifacial leaves : - which found in C.tinctoria, Euphorbia sp ., E. milii, E.annua and R.comminus 2 - Uni - facial (heterogenus) leaves : - this category of the mesophyll was detected in two species only A.telephioides and E.prostrata3 - Uni - facial (homogenus) leaves : - this category were noticed in five species; E.denticulata ,E.helioscopia ,E,macrocarpa , E.microsphaeia and E.peplus The second important comparative anatomical character was the Mid rib, which are in four types with several shapes from which discrimination between the species can be made : - 1. Convex - concave mid rib : - that was showed in E.helioscopia, E.macrocarpa, E.milii and M.annua.2. Convex - convex : - This type was found in three species C.tinctoria , Euphorbia sp.and R. comminus3. Flat - Convex : - This type of mid rib was observed in A.telephioides E.microsphaera, E.peplus and E.prostrata4. Flat - Flat : - This type was observed in only one species E.denticulata In stem, the most prominent parts of taxonomic evidence were pith and vascular bundles.In according to the pith, species can be divided into hollow stem (without pith) and solid stem (containing medulla good configuration). Hollow stem was clear in the stems of A.telephioides , E.microsphaera , E.prostrata and M.annua. While, the solid stem wasseen in the remaining species. Vascular bundles were existed in two types; that's connected vascular bundles that's characterized the hollow stems, and separate vascular bundles. In most of the species with the exception of M. annua, stem with scatteredvascular bundles were in cortex As well as, petiole which have features that a clear taxonomy values .either by outline of petiole or its vascular arc.Micro - morphological studies of epidermal layer of leaves showed very important taxonomical value. This layer of leaves reveals variation in shape of ordinary epidermal cell and nature of anticline cell wall, stomata complexes and Epicuticlular wax crystals.Micro - morphological of pollen was taxonomic evidence as well. It can be considered to divide the species of Euphorbiaceae family into two groups based on the number of germination apertures 1 - Hexocorporate : - this type was confined to C.tinctoria2 - Tricolporate all species studied remainingThe sculpture of pollen wall provided beneficial information invested in the species identification.Both seeds and fruits showed a distinctive role in species identification. Micromorophological study of seeds for species which belong to six genera Andrachne , Chrozophora, Euphorbia, Mercurialis , Phyllanthus and Ricinus were achieved by using Scanning Electron Microscope(SEM). The study concentrated on micro - morphological aspect of Caruncle, seed surface ornamentation and the shape of epidermial cell wall. The result revealed that most studied species were with carunclated seeds ,but some specieswere with ecarunclated seeds as in A.telephioides L. ,C. tinctoria( L) Raf , E.prostrata Atin and P. maderaspatensis L Seed surface ornamentation characteristics showed a significant taxonomical value.Furthermore, current result showed that there are a highly variation in shape, size and color of the seeds walls. With respect to the fruits characteristics, which showed variations in number of mercarpi, shape, size, color and surface ornamentation that can be adopted in the separation of the species studied Molecular study provided significant support for phenotypic and anatomical classification and support genetic convergence between the species in Euphorbiacea family. The genus Euphorbia species showed a significant genetically convergence and participated in predecessors monophyletic. However, the genera in Euphorbiacea family under study probably originated and evolved from different ancestors’ polyphyletic.

دراسة تصنيفية وحياتية للديدان الخيطية عائلة Tetrameridae Travassos, 1914 المتطفلة على بعض انواع الطيور في هور السناف محافظة ذي قار == Taxonomic and Biological Studies of Nematodes of the Family Tetrameridae Travassos, 1914 in the Some Birds in Sinaph marsh Thi - Qar province

Author name: نهى جبار عبد الركابي
Supervisor name: باسم ھاشم عبد الله
General topic: Biology
Specific topic: Microbiology - Parasites
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: A total of 401 represented by 128 birds of Himantopus himantopus which belong to the family Recurvirostridae , 93 birds of Chettusia leucura which belong to the family charadriidae and 180 birds of Sturnus vulgaris which belong to the family sturnidae at the period from April 2014 to march 2015 in Al - Sanaf marsh , Suq - Al - Shuyukh city southern of the Thi - Qar province,for searching the nematodes which belong to the family Tetrameridae. Four species of nematodes, which belong to the family Tetrameridae, were isolated in the current study. They were T.nouveli, T.dubia, T.spinosa and Microtetrameres inermis. The H. himantopus was infected with the nematode T.nouveli and the prevalence of infection was 25.8% , bird.Furthermore, the Chettusia leucura was infected, the mean intensity was 3.3 worm in each infected birds. The nematode T.dubia was isolated from H. himantopus with the isolated from the Ch. Leucura mean intensity was 1.7.The nematode T.spinosa was isolated from H. himantopus the the mean intensity of infection was 2.3 and it was isolated from the Ch. leucura , the prevalence of infection 4.3% and the mean intensity was 1.8 worm in each infected worm.The record of these three nematode is considering the first record in Iraq.Microtetrameres inermis was isolated from the Sturnus vulgaris, the each infected birds.Himantopus himantopus from April 2014 to March of 2015.This bird was infected with three species from family Tetrameridae, The seasonal variation study of infection prevalence of Tetrameres spp.in, H. himantopus that there was II Summarycomplete seasonal cycle for nematodes T.nouveli, T.dubia , and T.spinosa .The nematode T.nouveli had hightest infection prevalence in summer the decrease in autumn, winter and spring while the infection prevalence of nematode T.dubia was hight in summer and autumn then decrease in winter and spring. The infection prevalence of nematode T.spinosa was generally low with little increase in autumn .The results of the current of the Ch. leucura indicated that this bird was infected with three species which nematodes T.nouveli, T.dubia and T.spinosa and they had seasonal appearance . There was not any significant effect of host sex on prevalence of infection, and it showed decreased in prevalence of infection when the bird's weight was increased.The study of lifecycle of nematodes : T.nouveli ,T.dubia and M. inermis revealed obtainment the larval stages after success the infection experimental of the grasshopper Schistocerca gregaria for the first time the three isolated nematodes from family Tetrameridae in this study which it was T.nouveli , T. dubia and M.inermis and was included the lifecycle of the three species . The differences were including the period of time to produce and developing the larval stages in addition to the differences in their shapes, it was revealed that were clear differences in the structure and their shape of the tip the posterior end of the third larval stage. The end of the third larval stage of the nematode T. nouveli had three caudal papilla and the posterior end of nematode T.dubia had five caudal papilla while the end of the third larval stage of M.inermis did not have any caudal papilla , so we can distinguish these nematode larval stage depended on the prevalence this character in their third larval stage.The experimental infection of the Columba livia domestica with nematode M.inermis was successful.While the experimental infection to the Columba livia domestica with nematode T.nouveli ,T.dubia .was failed The experimental infection of the Gallus domestica with nematodes of Tetrameridae T.nouveli, T.dubia and M.inermis was failed too.

دراسة تشخيصية وحياتية لعلقة المياه العذبة Dina punctata Johansson, 1927 (Erpobdellidae : Hirudinea في اهوار السويب من محافظة البصرة جنوب العراق == Identification and Biological study of the Freshwater Leech Dina punctata Johansson, 1927 (Erpobdellidae : Hirudinea) in AL - Swaib Marshes From Basrah province south of Iraq

Author name: ازهر محمد غالي الخزعلي
General topic: Biology
Specific topic: Zoology - Invertebrates
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The species Dina punctata is recorded for the first time in Iraq (from Al - Swaib marshes). The identification was conducted morphologicaly and molecularly characteristics. The morphological features summarized as : - - The species D. punctata has vermiform body compressed ventrally, ranging in length from 55 - 60 mm and in diameter from 0.5 - 2 mm. The individuals have a large ability for extening. The pointed anterior end carries small anterior sucker which resembles lips surrounding the mouth opining, while the rounded posterior end carries large rounded posterior sucker. - This species is characterized by heterogeneous features such as the color of the body which changes from blackish gray for Adults to dark brown for Juveniles, as well as the number and arrangement of eyes which is in general four pairs arranged as reverse U shape located on the dorsal anterior edge. The first two pairs of eyes are located on the middle line of the body while the third and the fourth pairs are each located on one side of the body behind the anterior pairs. - The body consists of 34 segments, each of them is divided to five secondary annuli. The fifth annuli of each segment is divided into two subsections, thus the main segment becomes consist of six annuli. - The male and female gonopores are open on the ventral surface of the 12th segment, separated from each other by two annuli, the male gonopore is usually larger and clearer and located forward in the middle of the groove which is separate the annuli b2 and a2 respectively. The female gonopore is smaller and located in the back of the male gonopore in the middle of the groove which is separate the b5 and b6 annuli respectively.Because of the instability in some morphological features, the species D.punctata also identified in the present study according to genetic features.During the genetic study, the region of internal transcription space (ITS2) in DNA was isolated from leech specimens by using special primers for region internal transcription space (ITS2), after isolation, the ITS2 genes are amplified.The results of polymerase chain reaction of DNA were obtained of single bands of 580 base pairs molecular weight for all degrees of hybridization. The sequence of each sample after detecting was entered in the database of National Center Biological Information (NCBI) and the result showed that the sequences of all samples are belonging to the species D. punctata. In the field study, monthly samples of leeches D. punctata was collected from the marshes of Al - Swaib on the eastern side of Shatt Al - Arab river inQurna northern Basrah Province during the period from January 2015 to December 2015. A total of 235 individuals and 623 Cocoon were collected during the study period. The highest number was 58 recorded for individuals during May 2015, while being 335 recorded for cocoons during February 2015. On the other hand there is no occurrence recorded during July - August for individuals, and June - November for cocoons.The study investigates the water temperature, salinity and abundance of individuals and cocoons. The statistical analysis showed negative correlation between temperature and abundance of both individuals and cocoons, while the correlation of salinity was slightly positive with abundance of individuals and cocoons.The study of population sizes structure showed that the size class 40 - 50 mm has the highest frequency during the study period compared with the other size classes. On the other hand, the highest percentage of frequency was 66.7%, which also recorded for the size class 40 - 50 mm.Laboratory experiments showed that the members of a species D.punctata able to tolerate saline concentrations between 2 - 6 psu the survival rate 100%, Also, these worms (D. punctata) feed by different ways, it can be considered Predatory Macrophagous and Scavengers, its food materials consist of invertebrate animals such as Oligochaetes, Lumbriculids, Chironomid larvae; fleshy body of some aquatic snails; and on dead fishes. In the laboratory, the leeches fed well on flesh and livers of chicken, sheeps and caws, The laboratory also studied, Three different types of food effect (chicken liver, zooplankton, and animal feed) on the growth of young leech for a period of six weeks.From the field and laboratory observations, the specie D. punctata reproduces sexually by cross fertilization. The male and female gonopores are easily observed in adults which ranging in length from 45 - 60 mm. as well as the sperm sacs on the mid ventral surface of the body during the reproduction season, which extend in our study during two periods : January - May and December 2015. The sexual reproduction processes were studded in detail and the embryonic development in cocoons was divided into five hypothetical stages according to morphological and anatomical changes and these stages are : - 1 - Depositing Cocoon Stage.2 - Primary Cleavage stage.3 - Development and extension.4 - Differentiation of regions stage.5 - Complement and release stage. The histological structure of the body wall, suckers, reproductive organs and digestive tract of adult leeches were investigated. The body wall consists of thick layers of circular, longitudinal and oblique muscles.The structures of the male reproductive system such as genital atrium, sperm sacs and testis were observed. There are two lateral blood sinuses around the mouth cavity in addition to many nerve cells. The posterior sucker is muscular, and the muscle cells are as a dense net in the peripheral part, while are as a loose cells in the middle what give it a sponge appearance, in addition to primitive glomerular cells, nerve cells and mucus cells

استخدام البكتريا المختزلة للنترات المعزولة من مياة انتاج حقول النفط في البصرة في السيطرة على الانتاج الحيوي لغاز كبريتيد الهيدروجين المنتج بفعل البكتريا المختزلة للكبريت == Using of Nitrate Reducing Bacteria Isolated From Produced Water of Oil Fields in Basra in Control of Biogenic Hydrogen Sulfide Produced by Sulfate Reducing Bacteria

Author name: وجدان حسين عبد الصاحب التميمي
Supervisor name: كوثر هواز مهدي
General topic: Biology
Specific topic: Microbiology
Degree: Doctorate
Language: English
University location: Basrah
First pages:
Abstract: تضمنت الدراسة الحالية استخدام تقنية الاقصاء بالتنافس الحيوي للسيطرة على الانتاج الحيوي لغاز كبريتيد الهيدروجين H2S من قبل الجراثيم المختزلة للكبريت في مزارع الدفعة والمفاعل الحيوي, اذ ان اضافة النترات او النتريت يحفز نمو الجراثيم المختزلة للنترات التي تنافس الجراثيم المختزلة للكبريت على المصادر العضوية وتستقصيها. جمعت 40 عينة من مياه انتاج حقول نفط نهران عمر واللحيس في البصرة خلال 6 اشهر للفترة من اب 2013 الى كانون الثاني 2014, عزلت مزارع خليطه من الجراثيم المختزلة للكبريت والمختزلة للنترات من تلك العينات وحسبت اعداد الخلايا لكلا النوعين باستخدام طريقه العد الاكثر احتمالا وقد اظهرت النتائج ان اعداد الجراثيم كانت منخفضة اذ بلغت اعداد الجراثيم المختزلة للكبريت بين7 - 4 خلية/100مل في حين كانت اعداد الجراثيم المختزلة للنترات اقل من 4 - 2 خلية/ 100مل. كما تضمنت الدراسة الحالية ايضا تنقيه للجراثيم المختزلة للكبريت والمختزلة للنترات واجراء التشخيص الجيني بتقنيه التفاعل التسلسلي لانزيم البوليمريز PCR والذي من خلاله تم تضخيم الجين16S rRNA وحدد تتابعه للتشخيص الى مستوى السلالة وقد اظهرت تحاليل المجتمع الجرثومي ان عزلات الجراثيم المختزلة للنترات قد امتلكت تطابقا بنسبة 99% مع الانواع Pseudomonas stutzeri وP. putida وHerbaspirillum huttiense وBacillus licheniformis اما عزلات الجراثيم المختزلة للكبريت فقد اظهرت النتائج انها امتلكت تماثل 99% للانواعShewanella hafniensis وDesulfotomaculum acetooxidans وDesulfosporosinus orientis مع افتراض ان جميع العزلات هي سلالات جديدة عالميا. كما اظهرت نتائج المعاملة بالنترات او النتريت في مزارع الدفعة وجود تاثير مثبط قوي على الجراثيم المختزلة للكبريت اذ لم يزداد مستوى الكبريتيد في جميع التراكيز المستخدمة ( 200 و400 و600 و800 و1000) ملغم/لتر من النترات والنتريت فقد تراوح مستوى تركيز الكبريتيد بين 4.2 و21 ملغم/لتر عند المعاملة مع النترات و23 و5.2 ملغم/ لتر مع النتريت, وتطابقت هذه النتائج مع تركيز الخلايا في جميع القناني المعاملة, اذ تراوح بين 0.26 - 0.001 و0.003 - 0.17 مع النترات او النتريت على التوالي بينما كانت هناك زيادة معنوية في تركيز الكبريتيد الذي بلغ 121 ملغم/لتر وتركيز الخلايا بامتصاصية بلغت 0.84 في عينات السيطرة.كان للجراثيم المختزلة للنترات تاثير مثبط قوي على نمو الجراثيم المختزلة للكبريت وانتاج الكبريتيد عند اضافة المغذيات المشجعة لنموها بمختلف التراكيز, اذ ازدادت فعاليه الجراثيم المختزلة للنترات واستهلكت كل من النترات او النتريت المضاف خلال 3 - 2 يوم من الحضن وكان اعلى تاثير مثبط لانتاج غاز كبريتيد الهيدروجين عند التركيز 1000 ملغم/لتر من النترات اذ اظهرت النتائج وجود انخفاض معنوي في مستوى الكبريتيد الى34 ملغم/لتر في حين كانت اعداد البكتريا 34.8 خلية/مل بعد عشرة ايام من المعاملة. اظهرت نتائج معالجة الحموضة طويلة الامد باستخدام المفاعل الحيوي وجود انخفاض حاد في انتاج غاز كبريتيد الهيدروجين بنسبة 94% بعد اضافة النترات والنتريت خلال فترة 60 يوما من المعاملة ,الاضافة المستمرة للنترات والنتريت بحوالي ( 333ملغم/اليوم للنترات و133ملغم/اليوم للنتريت) ادت الى تثبيط الفعالية الحيوية للجراثيم المختزلة للكبريت وانتاج غاز كبريتيد الهيدروجين, اذ انخفض مستوى الكبريتيد من 155 الى 10 ملغم/لتر واعداد الخلايا اكبرمن 1100 الى 3.5 خلية/ مل بما يعادل 99.6% , بينما ازدادت فعالية واعداد الجراثيم المختزلة للنترات من 1100 الى اكبر من 1100 خلية/مل.اظهرت نتائج معدل تاكل عينات الحديد المطاوع في المفاعل الحيوي بعد 60 يوما ان اعلى معدل للتاكل كان 70.7 ملغم/ سم2/ سنه في المفاعل غير المعامل بالنترات والنتريت بينما انخفض معدل التاكل الى 15.8 ملغم/ سم2/ سنه بعد نفس الفترة من التعرض في المفاعل المعامل وبنسبة انخفاض بلغت 55% مقارنة مع المفاعل غير المعامل. | This study includes the used of Bio Competitive Exclusion technology (BCX) to control biogenic production of hydrogen sulfide (H2S) by Sulfate Reducing Bacteria (SRB) in batch cultures and bioreactors. The injection of nitrate (NO3) and nitrite (NO2) promotes the growth of nitrate reducing bacteria (NRB) which outcompete (SRB) on carbon sources. A total of 40 samples were collected from produced water of oil production facilities in Basra including Nahran Omer and Al - Lahis oil fields in a period time of 6 months from August 2013 to January 2014. Mix cultures of (SRB) and (NRB) were isolated from these samples, the two types of bacteria were enumerated by using most probable number method, the results show that the numbers of both bacteria were generally quite low, the viable count of (SRB) was between 4 - 7cell/100 ml whereas the (NRB) was between <2 - 4 cell/100 ml. This study also includes purification of isolates for both (SRB) and (NRB) and the genetic identification by polymerase chain reaction (PCR) technique through which the universal 16S rRNA gene of 1500 bp is amplified and sequenced for identification to the level of strains. Microbial community analysis showed that isolates of (NRB) were have identity of 99% Pseudomonas stutzeri, P. putida, Herbaspirillum huttiense and Bacillus licheniformis while isolates of (SRB) were have identity of 99% Shewanella hafniensis, Desulfosporosinus orientis and Desulfotomaculum acetooxidans with supposing that all isolates new world strains. The results of the treatment with nitrate or nitrite showed a strong inhibitory effect on (SRB) growth and (H2S) production, sulfide levels do not increase at all concentrations (200, 400, 600, 800 and 1000) mg/l of nitrate or nitrite range between 4.2 - 21 mg/l in treatment with nitrate and 5.2 - 23 mg/l in treatment with nitrite. This is consistent with the concentrations of bacteria in all treatment bottles which range between 0.001 - 0.26 and 0.003 - 0.17 in treatment with nitrate or nitrite respectively, while there is a significant increase in sulfide 121 mg/l and concentration of bacteria 0.84 in control as optical density. (NRB) has a certain inhibitory effect on the growth of (SRB) and (H2S) production when the (NRB) nutrient (nitrate or nitrite 200, 400, 600, 800 and 1000) mg/l were adding , the activity of (NRB) increases after treatment, and it consumed all nitrate or nitrite during 2 - 3 days of incubation, the strong inhibition of (H2S) production is at concentration 1000 mg/l of nitrate where the results showed that there was significant decrease in sulfide level 34 mg/l and number of bacteria, 34.8 cell/ml during 10 days of incubation.Souring control at long term treatment in bioreactors show sharp decrease in production of (H2S) to 94% after injection of nitrate and nitrite during the period of 60 days, the continuous dosing of nitrate and nitrite (333 mg/l/day nitrate and 133 mg/l/day nitrite) inhibited the metabolic activity of (SRB) and (H2S) production severely, the sulfide levels decrease from 155 to 10 mg/l and number of (SRB) from >1100 to 3.5 cell/ml the percent in number decreased was to 99.6%, at the same time activity and numbers of (NRB) increase from 1100 to >1100 cell/ml over the duration of experiment. The results of corrosion rate measurement on mild steel after 60 days showed that the highest corrosion rate was 70.7 mg/cm2/year in control reactor while the lowest corrosion rate was 15.8 mg/cm2/year in treated reactor at the same period time of exposure with percent of decreasing in weight loss to 55% comparing with control reactor.

دراسة تاثيرالتعرض السابق لمادة الايثيلين وايضه في بعض المعاييرالفسيولوجية : دراسة تاثيرالتعرض السابق لمادة الايثيلين وايضه في بعض المعاييرالفسيولوجية والوراثية عند العاملين في معمل البتروكيمياويات في محافظة البصرة والوراثية عند العاملين في معمل البتروكيمي == The Study of the effects of previous Ethylene Exposure on Some Physiological and Genetic Parameters in Workers of Petrochemical Plant In Basrah province

Author name: هبة ثاقب يسر
Supervisor name: سامي جبر المالكي | فائزة عبد الوهاب احمد
General topic: Biology
Specific topic: Life Science
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The current study was conducted to investigate the genetic and physiological effects of some industrial chemicals on workers of the Petrochemicals Industrial Factory, in Basra Province , as it has been collecting 100 blood samples during the month of January and February of 2011 from each of the exposure in (ethylene section) and the control group of (employees of the University of Basra). and then the samples were divided on the basis of each of the years of occupational exposure to more and less than 15 years , age group to the larger and smaller than 50 years, smoking habits.The results showed that there was a significant decrease in the haemoglobin concentration HB, PCV, RDW and MCV in the more than15 years exposure group in comparison with the control group, while, no significance was detected in the RBC, MCH, MCV ,RDW,MCH and MCHC in less than15 years exposure group . Whereas, a significant decrease in the PCV for the same group was observed.White blood cells parameters’ results showed also variations in their values. In general, WBC did not change significantly in both groups of workers, while, the proportion of the lymphocyte and the of monocyte declined significantly in the more than 15 year of occupational exposure group, in contrast, the proportion of granulated cells increased markedly in the same group. The results of group of less than 15 years exposure revealed that the proportion of monocyte dropped significantly. Conversely, there was a significant increase in the proportion of granulated cells while the proportion of the lymphocyte was not significant . Platelets’ number and average of platelets’ volume decreased significantly in both occupational groupsTurning to the biochemical tests, the results showed significant increase in both liver enzymes ALT ,ASTand bili as well as this increase was found in urea, uric acid and glucose values in both occupational exposure groups. Contrariwise, the ALP creatinine and cholesterol did not reveal significant changes in both groups that in comparison with control group. The total protein decreased significantly in the group of more than 15 year of occupational exposure.Testosterone level revealed a significant decline in both occupational groups, while the Follicle stimulating hormone showed a significant increase in the occupational group of less than 15 year and no difference was observed in another occupational group while LH hormone level was not significant.In case of the genetic effects of the ethylene compounds, DNA was extracted for control and occupational groups and amplification was performed for GSTM1, GSTT1 and Albumin by using PCR technique. The results showed that there was no significant effect of both occupational periods on the GSTM1 gene, while GSTT1 gene was significantly in the workers samples in group more than 15 year of exposure, which was 2.43 times more than the group of less than 15 year of exposure.As regards the impact of exposure to ethylene and loss of genes GSTM1 and GSTT1 showed the results of our study, significant increase in the loss of gene GSTM1 amounted to more than five - fold (5.1) among workers exposed compared to a set of control while the proportion of loss of gene GSTT1 by more than three - fold (3. 1) compared to the group control has been a loss ratio of the two genes together more than eight - fold (8.5) for workers exposed group compared to the control.The light smoke did not reveal a significant effect on the null of GSTM1 and GSTT1 genes that in comparison with the control group, while the study found a significant effect of smoking on gene GSTM1, causing the null of much more than doubled (2.2) times compared with the control group (non - smokers) and the significant effect of smoking on null GSTT1 gene loss as increased visits by the text (1.5) compared with non - smokers also appeared that excessive smoking has an effect on the GSTT1 gene causing loss by seven - fold (7.08) once compared to non - smokers.The effect of the age group (less and more than 50 years old) of the workers on the null of both GSTM1 and GSTT1 was also examined. GSTM1 gene was null six times in both age groups of workers more than the control samples. While the GSTT1 was null in age group less than 50 years old three times more than the control group. As well as this absence was two times in the age group more than 50 years old in comparison with control group.It could be concluded from the present study that the exposure of workers to ethylene and its metabolic impact and clearly on blood standards as well as caused a high level of enzymes AST, ALT and bilirubin and high blood sugar levels and lower total protein and high level of urea and uric acid level as well as the low level of the hormone testosterone as it turns out that occupational exposure to ethylene and metabolic outcomes and length of exposure and smoking for workers exposed role in influencing the genes of detoxification, causing null in each of the gene GSTT1 and GSTM1.

دراسات تصنيفية وحياتية ووبائية للمثقوبات المتطفلة في الجهاز التنفسي للطيور المائية في اهوار محافظة ذي قار == Taxonomic,Biological and Epidemiological Studies of Trematodes Parasitic in the Respiratory System of Some Aquatic Birds in Marshes of Thi - Qar province/Iraq

Author name: نثيلة رشيد حميد الكسار
Supervisor name: صبيح هليل المياح | باسم هاشم عبد الله
General topic: Biology
Specific topic: Microbiology - Parasites
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: A total of 420 aquatic birds belonging to four species( Chettusia leucura , Himantopus himantopus, Gallinula chloropus and Fulica atrawere collected in the current study during the period between December 2012 to November 2013 fisolated from Al - Chibayish marshes , eastern of Thi Qar province. Digenetic trematode, Haematotrephus nittanyense was isolated from H. himantopus and C. leucura. Prevalence in those birds were 20.7% , 2.2% respectively. Mean intensity of infection 1.7 , 1.2 respectively. Digenetic trematode , Haematotrephus chengi was found in C.leucura, the Prevalence of infection was 20.7% . These two trematodes were recorded for the first time in Iraqi birds . 2.6% of Ch. leucura were infected with Digenetic trematode , Uvitellina iraquensi , mean intensity of infection was 2.7 . Digenetic trematode , Cyclocoelum mutabile Cyclocoelum mutabile was isolated from F. atra and G. chloropus birds . Prevalence in those birds were 21.2% ,10% respectively. Mean intensity of infection 3 , 3 . Digenetic trematode , Cyclocoelum microstomum was found in 20% of G. chloropus birds and in 15% of F. atra , mean intensity of infection 2.8 , 1.8 respectively.The current study revealed that , most eggs of H. nittanyense , H. chengi and U. iraquensis hatch within the uteri of worms while embryonated eggs of C. mutabile and C. microstomum shed from mature worms hatch within few hours after being placed in water. The mean number of eggs differed between species. Hatching of C. mutabile and C. microstomum eggs did not occur at 12°C . Egg hatching rate of C. mutabile differed from eggs hatching rate of C. microstomum at all temperatures . Temperatures, salinity and acidification of water affectedthe rate of hatching of C. mutabile and C. microstomum eggs , and the results varied between two different species . Storing eggs of C. mutabile and C. microstomum at (0,4)°C for ( 1 - 8) weeks failed to hatch . Storing eggs of C. mutabile and C. microstomum at (7,10,12)°C for (1 - 8) weeks had no effect on hatching success or on eggs hatching rate.A biological study of the miracidia of trematodes which were isolated in the current study showed that , the survivorship and longevity of miracidia were differed among the different species . Temperature, salinity and acidification of water affected the survivorship and longevity of miracidia . Storing eggs of all species at (7,10,12)°C for eight weeks had no effect on survivorship and longevity of their miracidia. The study revealed that , the miracidia of all species were infective to Radix auricularia and Physa acuta snails , but R. auricularia snails more sensitive to infection . The infectivity of the miracidia of all species to R. auricularia and P. acuta snails varied according to the species of these trematodes . Infection rate of R. auricularia snails with the miracidia of all species , mean intensity of infection and the metacercariae output varied according to species of these trematodes, temperature , miracidial density as well as size of snails. Miracidia hatching from eggs stored for 1 - 8 weeks at 7°C not differed in their infectivity to snail. The miracidia of all species hatching from eggs stored for (0 - 8) weeks at 7°C differed in their infectivity to snail according to the species of these trematodes. Age and density of H. chengi miracidia affected the infection rate of R. auricularia snails as well as affected the mean intensity of infection . H. chengi infection had no effect on mortality rate of R. auricularia and P. acuta snails.The results showed that there were differences between the various stages included in the life cycle of the five species of Cyclocoelidae family isolated in the current study . The time required for production and development of these stages varied according to their species, as well as these larval stages were differed among the species in their shapes , sizes and in the product number of them .The current study revealed that , metacercariae of the trematodes which were isolated in the current study fed separately to Gallus domesticus and Anas platyrhynchos failed to produce an infection , although the influence of C. leucura bile on metacercariae of H. nittanyense , H. chengi and U. iraquensis varied according to the species of these trematodes but bile of C. leucura plays a role in increasing excysted juveniles ratios , reduction the time required for excysting and increasing the time of juveniles activity compared with a bile of G. domesticus .In the current study. H. nittanyense showed a clear seasonal cycle of infection in local aquatic birds , H. himantopus ,while the study exposed a clear seasonal cycle of H. chengi infection in local aquatic birds C. leucura . Isolation of U. iraquensis in different periods during the current study from local aquatic birds, C. leucura may refer to its ability to complete its life cycle in a study area. Isolation of C. mutabile from migratory bird at arrival time to the study area may refer to new infections that carried by these migratory birds from their breeding grounds . Abundance of sensitive snails and suitable temperatures in a study area at arrival time of these birds may help this trematode to complete its life cycle in this area thus new infections emerged later and these infections may carry by microstomum isolated from migratory birds only at the arrival time to the study area may refer to new infections that carried by these migratory birds from their breeding grounds as well as this may indicate an inability to complete the life cycle of this trematode in this area.

تاثير بعض المعاملات في زيادة تحمل نبات الموز (Musa acuminata L.) الصنف الهندي للشدين الملحي والمائي باستعمال تقانة زراعة الانسجة النباتية == Effect of some treatments on increasing salinity and water stress on Musa acuminata L. (Hindi cultivar) using plant Tissue Culture techniques

Author name: مريم جاسم محمد
Supervisor name: حسين خلف زاير | عباس مهدي جاسم
General topic: Biology
Specific topic: Life Science
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: اجريت الدراسة الحالية في المختبر التقني لزراعة الانسجة النباتية التابع للقطاع الخاص الواقع في منطقة الفيحاء / قضاء شط العرب/ محافظة البصرة للفترة من 2012/12/20 ولغاية 2014/12/20 على نبات الموز الصنف الهندي قصير الساق Musa acuminata L. بهدف وضع برنامج للاكثار الدقيق ومدى تحمل النبيتات للشد الملحي باستعمال كلوريد الصوديوم والشد المائي باستعمال مركب الكلايكول متعدد الاثيلين (PEG)Polyethelen glycol ومعرفة تاثير معوق النمو الباكلوبيوترازول (PBZ)Paclobutrazol في تضاعف الافرع الخضرية وفي اقلمة النبيتات وتاثير الهرمون النباتي حامض الابسيسك (ABA)Abscisic acid في تحسين التحمل للشدين الملحي والمائي. استعمل انصاف من القمم المرستيمية النامية Shoot tips كاجزاء نباتيةExplants على وسط MS مضافا اليه 5ملغم.لتر1 - من السايتوكاينين (BA)Benzyl adenine لتحفيز تضاعف الافرع الخضرية ومعاملتها بتراكيز مختلفة من ملح كلوريد الصوديوم وPEG وPBZ وABA وتم حساب عدد الافرع الخضرية الناتجة وقطرها وارتفاعها وعدد الجذور واطوالها ومتابعة نموها ثم اجراء عملية الزراعة الثانوية لعدة مرات ثم اقلمتها ونقلها الى البيت البلاستيكي.ويمكن تلخيص النتائج التي تم الحصول عليها بما يلي : 1 - اضافة ملح كلوريد الصوديوم بالتراكيز 0 او 20او50 او80 او120 ملي مولر الى الوسط MS اثر في تضاعف الافرع بنسب متفاوتة , وادى الى زيادة معنوية في المدة اللازمة لظهور الافرع الخضرية وتقليل عددها بزيادة تركيز الملح .2 - اضافة معوق النمو PBZ بالتراكيز 0 او0.5 او 1 او1.5 او2 ملغم.لتر1 - بوجود السايتوكاينين BA بالتركيز 5ملغم.لتر1 - ادى الى تقليل المدة اللازمة لبدء ظهور الافرع الخضرية وزيادة عددها وخفض ارتفاع النبات وعدد الجذور بزيادة تركيز PBZ.3 - تفوقت المعاملة الاولية بـPEG بالتركيز 1% معنويا على التركيز 0.5% في عدد الافرع الخضرية وفي عدد الجذور وطولها وزيادة في ارتفاع النبات وقطره .4 - اضافةABA الى الوسط الغذائي بالتركيزين 0.1 او0.3 ملغم.لتر1 - ادت الى تقليل عدد الجذور واطوالها وارتفاع النبات وقطره وتيبس الاوراق واصفرارها مقارنة مع معاملة السيطرة بينما تفوقت معاملة التداخل مع تراكيز كلوريد الصوديوم المدروسة مع المعاملتين 20و50 ملي مولر من كلوريد الصوديوم تفوقا معنويا على المعاملتين 80 و120 ملي مولر في زيادة عدد الجذور واطوالها وطول النبات وقطره . 5 - سببت اضافة كلوريد الصوديوم الى الوسط الغذائي زيادة معنوية في تركيزي ايوني الصوديوم والكلورايد وهبوط معنوي في تركيز ايون البوتاسيوم ونسبة البوتاسيوم /الصوديوم بينما ادت اضافة PBZ وPEG وABA الى انخفاض معنوي في ايون الكلورايد وزيادة معنوية في نسبة البوتاسيوم /الصوديوم .6 - سببت المعاملة بملح كلوريد الصوديوم زيادة معنوية في محتوى الاوراق من البرولين بزيادة تركيز الملح .كما ان تداخل تراكيز ملح كلوريد الصوديوم مع PBZ وPEG وABAقد سجلت زيادة معنوية في محتوى البرولين بزيادة تركيز الملح . 7 - ادت المعاملة بملح كلوريد الصوديوم عند التركيزين 20و50 ملي مولر زيادة محتوى الاوراق من الكربوهيدرات الذائبة الكلية في حين ادت المعاملة بالتركيزين و80 و120 ملي مولر الى هبوطها.اما بالنسبة لتداخل تراكيز ملح كلوريد الصوديوم مع تراكيز PBZ وPEG وABA فقد تفوقت معنويا في محتوى الاوراق من الكربوهيدرات عند جميع التراكيز مقارنة مع معاملة السيطرة .8 - اوضحت النتائج ان محتوى الاوراق من الكلوروفيل الكلي قد انخفض معنويا عند تركيزي80 او120 ملي مولر كلوريد الصوديوم .كما ان المعاملة بـ PBZ وPEG وABA ادت الى زيادة محتوى الكلوروفيل الكلي عند جميع التراكيز .9 - اقلمت النبيتات الناتجة من الافرع الخضرية المزروعة في الوسط الغذائي المزود بتراكيز ملح كلوريد الصوديوم فقط ومن تداخل كلوريد الصوديوم مع تراكيز PBZ وPEG وABA وقيس ارتفاع النبات وقطره وقورنت مع معاملة السيطرة .10 - ادت المعاملة بتراكيز PBZ وPEG وABA المتداخلة مع تركيزي ملح كلوريد الصوديوم 20 و50 ملي مولر الى خفض معدل النسبة المئوية للرطوبة المفقودة وزيادة النسبة المئوية للنباتات المؤقلمة.11 - اضافة كلوريد الصوديوم الى الوسط الغذائي ادى الى حدوث تغيرات في عملية التعبير الجيني وظهور اختلافات في عدد ومواقع وكثافة الحزم البروتينية .12 - التداخل بين كلوريد الصوديوم والمواد المضافة PBZ وPEG وABA ادت الى اختفاء بعض الحزم وظهور حزم اخرى في مواقع مختلفة خصوصا الحزمتين 3و 4 . | This study was conducted in the laboratory of the technical plant tissue culture in Fayhaa / Shatt Al - Arab District / province of Basra for the period from 12/20/2012 till 20/12/2014 at Dwarf banana cv. Indian Musa acuminata L. In order to develop a program for micropropagation and were to investigate salt stress tolerance through the effect of NaCl, and water stress through Polyethelen glycol(PEG) and knowledge of the growth retardant of Paclobutrazol (PBZ) in multiplication of the branches vegetative and acclimatization and the effect of Abscisic acid(ABA) on improving salt and water stress tolerance. Halves of shoot tips were used explants which were cultured on MS medium supplied 5 m.l - 1 of Benzyl adenine (BA) to stimulate the multiplication of the branches vegetative and treated with different concentrations of sodium chloride and PEG and salt PBZ and ABA were calculating the number of branches vegetative resulting in diameter and height and number roots and length of follow - up and growth of agriculture and then conduct subculture for several times and then acclimatized and transferred to the plastic house.The results of this study can be summarized as follows : 1 - The addition of 0 or 20 or 50 or 80 or 120 mM of sodium chloride to the MS medium affected the multiplication of the branches vegetative in various percentages. This, in turn, resulted in a signficant increase in the required time to initiate the adventitious buds and lowered their number. There was also a significant difference in the percentage of increasing the numbers of those branches by increasing the salt concentrations. 2 - The addition of the concentrations 0 or 0.5 or 1 or 1.5 and 2 mg.l - 1 of growth retardant PBZ together with 5 mg.l - 1 BA resulted in lowering the required time for initiating the adventitious buds, increasing their number, decreased the number of roots and height of stem by increasing the concentration of PBZ.3 - The initial treatment by 1% PEG significantly increased than the concentration 0.5%. This increase included the number of the adventitious buds, number and length of roots, as well as height and diameter of stem.4 - The addition of 0.1 and 0.3 mg.l - 1 ABA to the nutrient medium led to lower th number and length of roots, stem height and diameter. The leaves became dry and yellow when compared to the control treatment. As far as the interactions between the sodium chloride concentrations in question are concerned, the two concentrations 20 and 50 mM showed a more significant difference than the other concentrations 80 and 120 mM in the number and length of roots, and stem length and height.5 - The addition of the sodium chloride to the nutrient medium resulted in a significat increase in the concentrations of sodium chloride ions and a significant decrease of potassium/ sodium percentage. The addition of PBZ, PEG, and ABA resulted in a significant decrease in chloride ion and a significant increase in potassium/ sodium percentage.6 - The sodium chloride treatment caused a significant increase in the leave content of Proline by incresing the salt. The interaction between sodium chloride salt concentrations and PBZ, PEG, and ABA showed a significant increase in the proline content by increasing salt concentration.7 - The treatment by the two concentrations 20 and 50 mM sodium chloride resulted in increasing the leave content of the total soluble carbohydrates, whereas the treatment by the two concentrations 80 and 120 Mm lowered the leave content. Considering the interaction between sodium chloride and PBZ, PEG and ABA, the interaction showed a significant increase in the leave content of carbohydrates at all concentrations compared to the control treatment.8 - The results showed that the leave content of chlorophyl increased significantly at the two concentrations 20 and 50 mM sodium chloride. Also, the treatment by PBZ, PEG, and ABA showed an increase in the chlorophyl content at all concentrations.9 - The resulted plantlets were acclimatized by sodium chloride salt concentrations and by the interaction of Sodium Chloride and PBZ, PEG, and ABA. The plant height and stem diameter were measured and compared to the control treatment.10 - The treatment by PBZ, PEG, and ABA concentrations that are interacted with Sodium Chloride salt concentrations at 20 and 50 mM led to lower the average percentage of lost moisture and increase the percentage of the success of acclimatization. 11 - Add Sodium chloride to the media has led to changes in the process of gene expression and the emergence of differences in the number and location and intensity of the protein packets.12 - The interaction between the sodium chloride and additives PBZ and PEG and ABA led to the disappearance of some packages and the emergence of other packages in different locations, especially packages 3 and 4.

السيطرة الاحيائية واللااحيائية على نمو الفطر Aspergillus flavus والتعبير الجيني للجينين aflDو aflR وانتاج الافلاتوكسين B1 == Biotic and Abiotic Control on Aspergillus flavus Growth, aflD and aflR Expression and Aflatoxin B1 Production

Author name: لبيد عبد الله نجم السعد
Supervisor name: عدنان عيسى البدران | سامي عبد الرضا الجميلي
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: English
University location: Basrah
First pages:
Abstract: Fifteen isolates of Aspergillus flavus (AFL1 - AFL15) were isolated from multiple sources included soil, compost, seeds, fruits, feed and air. The isolates were identified morphologically then confirmed by molecular techniques. Only thirteen isolates were confirmed positively (AFL1 - AFL5 and AFL8 - AFL15) while two of them were not. A phylogenetic analysis was made which revealed that the isolates grouped according to their source of isolation. The aflR profile and phenotypic AFB1 production confirmed that all thirteen isolates posses the ability to produce AFB1 with significant differences (P ≤ 0.05) among them. Growth rate profile was performed under 30ºC which showed significant differences (P ≤ 0.05) among isolates. According to the above tests, A.flavus AFL14 was selected to be the experimental isolate for the rest of experiments in this study. Comparing to A.flavus NRRL3357 type strain, the impact of temperature, water activity aw and isolate factors was examined to determine the limits and optimum ecological conditions of growth of A.flavus AFL14. The results displayed that the best growth rate was (7.217 mm/day) at 0.98 aw where the lowest was (4.069 mm/day) at 0.9 aw with no growth at 0.85 aw while the impact of temperature demonstrated by outweigh of growth rate at 35ºC (6.201 mm/day) followed by 30ºC (5.272 mm/day) which exceeded 25ºC and 40ºC (4.604 and 4.051 mm/day), respectively.Bacillus subtilis (isolates : BSS1, BSS2, BSS3, BSS4 and BSW) and Pseudomonas fluorescens (isolates : PFMst and PFDL) were elected to be used as biocontrol agents. All the isolates were passed the biochemical identification tests moreover, BSS4 and BSW isolates of B.subtilis and PFMst and PFDL isolates of P.fluorescens were confirmed molecularly which used later in all biocontrol experiments in this study. The ability ofbiocontrol agents to inhibit fungal growth was investigated and the resultsshowed significant inhibition impact represented by significant outweighof B. subtilis BSS4 (99%) on the rest of B. subtilis isolates followed by P.fluorescense PFDL and PFMst (92.29 and 86.19) %, respectively, with nosignificant differences (P ≤ 0.05) among them. The extra - cellular abilityof biocontrol agents to degrade AFB1 showed a high degradation abilityIpreformed by B. subtilis BSS4, BSW isolates and P. fluorescence PFMst,PFDL isolates (100, 100, 97.805 and 97.396%), respectively. Thedegradation residues administrated to rats to determine their effect onbiosystems, the blood parameters showed a significant reduction ofWBC, HB, RBC, and P.C.V while there was a significant increase inUrea, Glutamic pyruvate transaminase (GPT) Glutamic oxaloacetictransaminase (GOT) and MCV in AF+DMSO treatment comparing tothe negative and positive control. Water activity and biocontrol factorswere examined to control aflD and aflR expression and phenotypic AFB1production. When the experiment held using Nutrient Agar medium, asignificant inhibition of aflD and aflR expression (P=0.000 and 0.003),respectively performed by BSW at 0.94 aw comparing to 0.98 aw whileno significant inhibition was observed in the rest of the treatments. Allbiocontrol agents revealed high significant reduction of aflD and aflRexpression (P≤0.001) in each water activity level separately whichconfirmed by HPLC results. The phenotypic results showed that 0.94 awexceeded 0.98 aw in AFB1 reduction (2011 and 4280 ng/gm),respectively which agreed with gene expression results. When MaizeMeal Agar used as a medium, aflD expression presented a highsignificant increase at 0.98 aw relating to the NM level of each individualtreatment (P= 0.000 - 0.03) except PFDL+AFL14 which showed nosignificant aflD expression between both levels. aflR expression revealeda high significant reduction (P= 0. 000) caused by 0.98 PFDL+AFL14and 0.98 BSW+AFL14, respectively, while no significant differenceswere observed in the rest of the treatments or control. The HPLC resultsdisplayed a high significant reduction of AFB1 at 0.98 aw (8447 ng/gm)compared to (219000 ng/gm) at NM aw. The biocontrol agents caused ahigh significant reduction for both aflD and aflR expression (P=0. 000 - 0.043) under each individual water activity level while, HPLC resultsshowed non significant low reduction to the AFB1 performed by BSS4and BSW (25160 and 44790 ng/gm), respectively, followed by asignificant increase in AFB1 amount caused by PFMst and PFDL(267600 and 184100 ng/gm), respectively

دراسة بيئية لبعض العناصر الثقيلة في مياه نهر الفرات عند مدينة الناصرية وقابلية مراكمتها من قبل بعض الطحالب الخضر المزرقة ونبات الشمبلان مختبريا == Ecological Study of Some Heavy Metals on The Euphrates river Water at Nassiriyah City and The Ability of Accumulation by Some Blue green Algae and Ceratophyllum demersum L. in the Laboratory

Author name: عبد الوهاب ريسان عيال العبادي
Supervisor name: احمد محسن عذبي | اقبال جاسم الاسدي
General topic: Biology
Specific topic: plant - aquatic life
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The diversity of phytoplankton were studied and some physical and chemical environmental factors are (Temperature of air and water , pH , electrical conductivity , salinity , dissolved oxygen , alkalinity , hardness and nutrients) of four locations on Euphrates river water at Nassiriyah city in Thi Qar governorate . The first location lies north - west of Nassiriyah city at Al - Sharif region , whereas the second location lies in Al - Mustafaweia region , and the third location lies in Al - Majzarah region , and finally the fourth location lies in Al - Fadlyia city . Samples of water were collected from January to December of the same year of 2014 .The concentrations of some heavy metals are (lead , cobalt and cadmium ) were estimated , in addition to limitation of the efficiency of some algal species and Ceratophyllum demersum L. in bioremediation of their elements on the river water and a limitation of the accumulation sites of the heavy metals on the cells of the algal and plant by using the scanning electron microscope - x - ray . The results revealed clearly a variation on monthly , quarterly and locations of the number properties of the physical and chemical that were studied , the temperature of water ranged between 11.5cہ - 43.6c ہ and air ranged between 15.5cہ - 44.9 cہ , the high temperature at the second location was recorded .The high value of pH 8.62 in the forth locations at April was recorded and the low 7.2 in the third location at July . The concentrations of electrical conductivity were ranged between 3308 - 5773 μs / cm , whereas the concentrations of salinity ranged between 2.11 - 3.69 gm / l , the high concentration on the third location at February was recorded , and the low on the first location at April was recorded , while the concentrations of the dissolved oxygen ranged between 5.40 - 11.70 mg / l , the high concentration on the first location at February was recorded , whereas the low concentration on the third location at August was recorded , also the alkalinity concentrations ranged between 13 - 250 mg / l , the high concentration on the fourth location at March and the low concentration on the third location at July was recorded . From the results , it was show that , the river water was hardship , the hardness concentrations ranged between 850 - 1610 mg / l , the high concentrationaon the third location at January , and the low on the second location at May was recorded .While the concentrations of the nutrients , as nitrate and phosphate , the nitrate concentrations ranged between 13.6 - 41.5 mg / l , the high concentration on the third location at February and the low concentration on the first location at July , whereas the phosphates concentration ranged between 0.83 - 1092 mg / l , the high concentration on the third location on first location at April.Also the diversity of phytoplankton had been studied that were present in water of the river, There were diagnosis 198 species distributed between six classes , the dominance to the Bacillariophyceae as 90 species which belonged to 19 genus were recorded and at the percentage 45.45% of the total numbers of species recorded , followed by the Chlorophyceae 46 species which belonged to 25 genus and at the percentage 23.23% of the total species were that were recorded , followed by Cyanophyceae algae 46 species which were belonged to 15 genus and at the percentage 23.23% and algae of the Euglenophyceae had eight species which were belonged to three genus record and at the percentage 4.04% , with regard to the algae of Xanthophyceae had recorded five types at there belonged to three genus and at the percentage 2.52% and finally the algae of Chrysophyceae which was recorded three types belonged to the same genus , which collectively represent the percentage 1.51% .The study also experienced a record for species of phytoplankton at the first time in Iraq , which were five belonged to four classes , one of them was belonged to Chlorophyceae algae (Trochiscia granulate Prescott.) and the others to the Euglenophyceae(Phacus pyrum (Ehrenb.) Stein and Trachelomonas simillis Stokes) and one species for Chrysophyceae(Mallomonas elliptica (Kisselew) Conrad)and Xanthophyceae algae (Peroniella planctonica G.M.Smith).The concentration of some heavy metals (lead , cobalt and cadmium) in water of the locations was studied by using the flame atomic absorption spectrophotometer , the results were showing that , the concentrations of lead ranged between 4.58 - 29.0 μg / l , as record the high concentration on third location at August and the low on the first location at December , while the concentrations of cobalt were ranged between 4.60 - 23.0 μg / l , as record low concentration was on the first location at December ,bwhile the high concentration on the third location at August , cadmium concentrations ranged between 0.84 - 14.63 μg / l , the low concentration 0.84 μg / l recorded in the first location at December , while the high concentration 14.63 μg/ l in the third location at June .The study included too . a laboratory experiments to demonstrates the efficiency of some species of algae and Ceratophyllum demersum L. on the bioremediation of pollutants in the river water . The results indicates that , there was an increase on the percentage of the removal of elements with the increasing concentrations of elements that were added to water aquarium , reaching the low percentage of biological remove of the lead 95.2% at the treatment 50 mg / l and at the time period 10 days , whereas the biological remove of the high percentage 99.2% at the same treatment during the time period 40 days.As for the cobalt element , the results showing that , there were a gradual increases of the proportion of the removal with the increasing concentrations of cobalt that were added to the water aquarium , and reached to 94.2% at the treatment 50 mg / l at the time period 10 days , whereas the percent for the removal 98.56% at the time period 40 days at the same treatment , whereas the percentage of the vital removing of the element cadmium by the water plant Ceratophyllum demersum was increases in removing from the water aquarium that was 92.6% at the treatment 50 mg / l at the time period 10days , whereas it was 97.40% at the same treatment .As for the algae it had been isolated and diagnoses , the were four species of , blue - greens (Microcystis aeruginosa Kütz. , Nostoc linckia(Roth) Bornet and Thuret , Oscillatoria amoena(ktz.) Gomont and Hapalosiphon aureus West and West , samples were collected from the Euphrates river water on the studied locations . It was purified and propagation of these species on the laboratory for a single culture cell , unialgal culture and axenic culture to test their ability to remove and accumulation of the heavy metals from water. These species of algae were treated salt solution of heavy metals are lead , cobalt and cadmium both in privates and at different concentrations 0.10 , 0.25 , 0.50 , 1.00 and 2.00 mg / l for a period of two weeks . H.aureus was accumulated more of lead 1.724 μg / gm at the treatment 2.00 mg / l , followed by O.amoena which accumulated 1.638 μg / gm and N.linckia accumulatedc1.621 μg / gm and finally M.aeruginosa accumulated 1.579 μg / gm at the same treatment , but when adding the salt solution of cobalt nitrate , the alga O.amoena was accumulated more of cobalt element 1.726 μg / gm at the treatment is 2.00 mg / l , followed by H.aureus as accumulated 1.638 μg / gm , and was N.linckia accumulated 1.535 μg / gm , followed by M.aeruginosa 1.428 μg / gm at the same treatment . When are using the solution of the salt cadmium acetate , the N.linckia was accumulated more of cadmium 1.08 μg / gm , followed by H.aureus which was accumulated 0.63 μg / gm and finally O.amoena accumulated the percentage was reached 0.59 μg / gm at the same treatment .The study was included too the a limitation sites and accumulation of heavy metals within the plant cells and algae that were studied by using technology of scanning electron microscope - x - ray and the use of reagent X - ray EDX with SE2 .The results were showing that , The locations which accumulated heavy elements was in the cytoplasm of the cell . On the above of the foregoing the Ceratophyllum demersum L. showing high efficiency of accumulation of heavy elements inside the cells as compared with the studied algae , the efficiency and ability to increase of the accumulation increases by added of elements and by the increases period of exposure , also algae were revealed a capabilit

دراسة الطفرات الوراثية في جيني TPO وTSHR في محافظة البصرة

Author name: فله عبد الستار
Supervisor name: فائزة عبد الوهاب احمد | اسعد يحيى عايد
General topic: Biology
Specific topic: Plant - Genetics
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: Considered the thyroid glands task Deaf which produces important hormones are Tri iodothyrosine T3 and Thyroxin T4 and is responsible for their production a number of genes that encode the enzymes and proteins and the occurrence of any defect in this gene lead to the emergence of disorders of the thyroid work, including the case of palaces and fragments in hyperthyroid through the emergence of different pathological symptoms that indicate the occurrence of one of the cases studied in this research gland disorders at the level of molecular genetics .The study included only females were collected blood samples from 70 patients divided into 35 blood samples of the state of palaces and 35 blood samples for the case of the bulk in hyperthyroid deaf and diabetes endocrine centers of hospitals and ports Fayhaa year and Qurna, as well as from laboratory d. Nizar Mahfouz and represented a group of patients and 20 blood samples from healthy people represented as a set of control and that during the period from April to September 2013. But has been working on a sample of 70 patients (35 blood samples by the state of palaces and 35 blood samples for the case of the bulk gland) to add to the 20 blood samples of control and ages of the two groups and the healthy range (12 - 60 years).DNA was extracted DNA of two and three encoded amplified regions (8, 9 and 14) for the TPO gene and encoded region tenth TSHR gene PCR technology after it was diagnosed and analysis of mutations using the method for Sequences .The results showed the presence of two types of changes in the TPO and TSHR genes , two polymorphism (SNP) and Mutation, in gene156TPO study found hereditary forms c.1117G> T, A372S and c.1194G> C, S398T in the two groups of patients and healthy and not they relate to the occurrence patients palaces gland activity, as the study diagnosed 12 Novel Mutation in exon 8 in 21 patients hypothyroidism as compared to control (who did not appear to have any kind of mutations diagnosed) and that all mutations diagnosed are mutations bitmap compensatory (substitution) the type of guarantee or Transtion Transversion depending on the nature of the base mutant, five of the mutations are Missense Mutation in 11 infected condition limitations are as follows c.949A>G,M317V , c.1064G>A,R355H, c.1277C>G,A425G , c.1063C>A,R355S and c.1207C>A,L402M and seven silent mutation in 10 patients hypothyroidism c.1062G>A,A354A , c.1050C>A,L350L , c.843C>A,A281A , c.1101G>A,V367V, c.1143C>T,I381I , c.1071G>A,R357R and c.2406C>T,D802D , While the results did not show any difference in the analysis of the genetic sequence of the two exons 9 and 14 at comparable with the genetic sequence of the control group. In this study suggests that there may be a correlation between the occurrence of mutations in a gene TPO and the state hypothyroidism . The results of the current study showed that the gene TSHR has an impact in both cases, and shortcomings in fragments in the activity of the gland where the study found three types of polymorphism (SNP) of the two of them Non - Synonymous type c.2181G> C, E727D and c.1489G> C, A496P and shape The last of the silent type genetic c.1377G> A, A459A, as the results showed that the two forms hereditary c.2181G> C and c.1489G> A have no correlation to happen disorders and are globally registered the shape genetic c.1489G> C, A496P did not score previously has current study for the first time and may have a link to happen one of the disorders depending on the genetic predisposition of the individual . I found the157current study, seven Novel Mutation in exon 10 distributed to five mutations among patients hypothyroidism as compared to control (who did not appear to have any kind of mutations diagnosed) and that all the mutations diagnosed are mutations bitmap compensatory (substitutive Substitution) to ensure the kind of Transtion or Transversion depending on the nature of the base mutant 'three mutations are Missense Mutation in 3 people with the status of the palaces and the proportion of each mutation them (20%) are as follows c.1330 T>C , Y444H ; c.1424 T>C ,L475P and c.1435 T>C , S479P and two silent mutation in patients hypothyriodism c.1338 G>A, L446L and c.2300 G>A , Untranscrib , While the results recorded and there is only Tafrtin in the case of the bulk in hyperthyroid by (5.71%), one Missense mutation (c.1832 C> A, P610Q) and the other is silent (Silent) (c.2103 C> A, R701R). The present study indicated that the probability of the occurrence of the disease mutations link through the site mutations in specific areas to link hormone catalyst and the interaction between the Receptor and the unity of secondary alpha (G - protein). Results of the current study also showed that mutations identical and disparate factors have an impact on events in the case of deficiencies, genetic gland activity in the TPO and TSHR through defect events and constructed partially or wholly in the function of the protein encoded by genes TPO and TSHR

عزل وتشخيص مركب ايضي ثانوي جديد لكل من الفطرين Fusarium Trichoderma harzianum وsolani المعزولين من السواحل الرسوبية في محافظة البصرة وتقييم فعاليتهما الحياتية == Isolation and Identification of Novel Metabolic Compound From Both Fusarium solani and Trichoderma harzianum Isolated From Sedimentary Coast of Al - Basrah City and Estimate their Activity

Author name: فردوس نوري جعفر
Supervisor name: محمد لطيف علي | نيران جاسم الصالحي
General topic: Biology
Specific topic: Microbiology - Fungi
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: with the interest of medical and pharmaceutical uses of the natural products from marine fungi , thirty species of fungi belong to ninteen genus were isolated and identified from sea coast sediment of Al - Faw and Al - Seeba .The fungi Acremonium strictium , Geotricum candidum, Fusarium solani ,F.oxysporum , Penicilium sp. ,Trichoderma harzianum exhibited high inhibition activity toward growth of two reference strains of bacteria Escherichia coli (ATCC25922) and Staphylococcus aureus (NCtC 6571). The six selected fungi were grown in liquid culture media PDB at 25°C for two weeks ethyl acetate was used to extract the active compounds from thefermentation liquid media while ethanol was used to extract the active compounds from fungal mycelia .The crud extracts (fermentation and mycelium ) showed different inhibition activity against the pathogenic bacteria , Proteus mirabilis , S. aureus, isolates E. coli, Pseudomonas aeruginosa Klebsella pneumoniae. and pathoginic yeastes Candida albicans, C.tropicals,Cryptococcus neoformans and dermatophytic fungi Trichophyton verrucosum and Microsporium canis . The results revealed that the fermental fungi extracts has more inhibition activity than mycelial fungal extracts.The minimal inhibitory concentration (MIC) of fungal crude extracts were determined against gram positive and gram negative bacteria and pathogenic yeasts and fungi . antagonisum between studied fungi were evaluated , and the fungus T.harzianum has been the more antagonistic effect against other fungi. The toxicity of the fungal crude extracts were tested by using of human RBC at different concentration the result of this experiment showed that all extracts are non toxic except F.oxysporum extract.From all the above results the both F.solni and T.harzianum extracts showed higher activities ,thus these two extracts chosen for further studies. The anticancer activity of both extracts were studied against Hela cell line and the anticancer activity appeared at 250 Mg/ml and 62.5Mg/ml respectivily. The antioxidant activity of extracts were examined by three different methods ,B - carotene ,hydrogen peroxide scavenger and ferrus ion reduction , the results of three methods showed that both fungal extracts have antioxidant behaviours and the T.harzianum extract had more antioxident activity than F.solani extract and the antioxidant activity of both fungal extracts were increased as the concentration of the extracts increase.An optimization of the fungal growth and bioactivity of both fungi were conducted, by using different Nitrogen sources ( Asparagine , Yeast extract , peptone , Ammonium chloride , Sodium nitrate , Ammonium sulphate ) and carbon sources ( Maltose , Galactose , Glucose , Dextrose , Sucrose ,xylose and Starch ) the results elucidated that yeast extract was the best for growth of both fungi on solid and liquid media and high inhibition activity appear with T.harzianum against bacteria isolates , the carbon source starchenriched the growth of F.solani with more activity in inhibition the bacterial growth while the sucrose give high enrichment to the growth of T.harzianum in solid and liquid media with high activity toward bacterial growth. The study also indicates that the beast temperature and pH which gives the higher activity and growth 25°C and pH6 . The effect of different concentration of salinity were studied as well (1%,2%,3%,4%,5%,6% NaCl)and 2% showed the best concentration .The activity of two studied fungal extracts were superior than commercial antibiotic toward bacterial isolates .Preliminary qualitative chemical tests were carried out on the extracts and their chemical nature were identified .TLC technique were used and the chemical analysis showed that F.solani extract consist of two components with constant Rf values, the components marked as A1 and A2 . A1 shows higher activity against bacterial strains while T.harzianum extract consist of one component.The chemical structures of the isolated compound were

دراسة تصنيفية وبيئية لبعض انواع عائلة ذباب الخيل Diptera : Tabanidae ودورها في نقل طفيلي Trypanosoma evansi في محافظة البصرة

Author name: علاء ناظم حاتم علي
Supervisor name: ضياء خليف كريم
General topic: Biology
Specific topic: Zoology - Insects
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:

التغيرات الكيميوحيوية المصاحبة للشد الملحي وتقييم دور مستخلص الطحلب الاخضر Cladophora crispata في نبات الرز Oryza sativa L. المستزرع نسيجيا

Author name: عبد الامير رحيم عبيد
Supervisor name: حسيي خلف زاير | لوى حسين عبد القادر
General topic: Biology
Specific topic: Plant - Physiology
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: This study was conducted at the tissue culture laboratory at the Dept. of biology, College of Education pure Sciences from 1/3/2012 - 1/12/2014.With the objective of studing the tolerance of the salt stress of two rice (Oryza sativa L.)cultivars namely Anber and Furat using the technology of tissue culture. . Mature seeds (mature embryo and endosperm) were used as bing parts of explants which were cultivated in a semi - sold( Murashige and Skoog 1962) nutrient medium and some additives such as vitamins and amino acids .The growth regulator Dichlorophenoxy acetic acid (2.4 - D)was used, about 8mg/l , sucrose at 30g.l - 1 . . The study ,also ,tested the effect maltose at 30g.l - 1, and the effect of 0.5g/l of casein hydrolest were tested.the study also included the different of sea water concentrations (0,20,40,60)%on the induction of growth and development of callus ,the effect of green algae extract at Cladophora crispate by adding 1g fresh weight to the nutrient medium with all sea water concentrations.All the features of the callus were tested as well as the effect of the interaction between sea water concentrations and algae extract , as well as interactions among rice cultivar x sea water concentration x algal extract.The study depended on some growth indicators to determine the degree of callus to tolerance towards salt stress .the resistance of callus to salt depended on regeneration through the required of time for the formation of embryos ,number of germinated embryos ,and number of plantlets .The concentration of the major metal ion : sodium, potassium, phosphorus, calcium ,magnesium, potassium/sodium percentage , and the minor metal ions : iron ,copper, manganese were also some chemical components such as protines and amino acid proline measured, were also measured .The randomized block design (C.R.D)and factorial experiments were used depending ten replicates per treatment .The results can be summarized as follows : 1 - The results showed that the addition of sugar di maltose as an energy source and Casein hydrolyses to the nutrient medium had appositive effect on significant decrease in the required time to mitiate the callus ,in the increase of callus induction percentage and in the increase of freshweight of initial callus. .2 - The effect of sea water and algae extract : . A - The current study shaued that the addidtion of 20 and 40 % sea water to the nutrient medium resulted in a significant increase in the required time to induce the callus ,and a significant decrease in the percentage of callus induction and weight of the mitial callus as compared with the control treatment .The concentration 60%0f sea water caused the mature seeds to lose their ability to germinate and induce the callus if no induction occurs at all . The effect of algae extract resulted in a significant decrease in the required time for callus induction ,and a significant increase in the percentage of callus induction ,the weight of the mitial callus and 0,20,40% of sea water as compared with free algae extract medium.B - The results showed that the addition of 20% of sea water to the nutrient medium that is prepared for the growth of the embryo callus led to a significant increase in the fresh weight as compared with the control treatment , whereas the two concentrations 40 and 60%sea water led to a significant decrease in the embryo callus weight .The effect of the algae extracted to a significant increase in the fresh weight of the embryo callus with sea water concentrations as compared with the free algae extract medium.C - The addition of 20,40 and 60%sea water cause a significant decrease in the number of the somatic embryos ,thir germination auerage ,number and germination of the formed plantlets . This addition also caused a significant increase in the required time to stare the germination of the somatic embryos as compared with the control treatment .The addition of the algae extract led to increase the number of formed embryos ,germination percentage ,and number and percentage of plantlets ,wher was the addition led to lower the required time to germination the embryos compared with the free algae extract medium.D - The addition of 20 ,40 and 60% sea water to the nutrient medium resulted in a significant increase in the concentration of sodium ,calcium ,and magnesium ion in the embryo callus ,while a significant decrease occurred in the concentration of potassium and phosphorus ion and thedpotassium/sodium percentage as compared with the control treatment .The abone mentioned concentrations 0f sea water led to significant increase in concentration of ion ,copper, and zinc ions ,and significant decrease in manganese ion ,The addition of the algae extract caused in lowering the concentration of sodium ion .This decrease was significant in the 60 % sea water medium. The ingrease of potassium ,calcium ,phosphorus, and magnesium ion in embryo callus tissue when compared with free algae extract medium and was significant with some sea water concentration.E - The results ,also ,showed that the addition on 20, 40 and 60% concentrations0f sea water resoled in a significant decrease in concentration of some chemical ingredients such as protein and amino acid proline of the embryo callus in comparison with the control treatment . as far as the effect of the algae extract is concerned ,the addition of this extract to the nutrient medium led to a significant increase in the concentration of the proteins and amino acid prolne as well as with all sea water concentrations.F - The results of study showed that the addition of 20,40,60% sea water led to a significant increase in the rate 0f effectiveness 0f the enzyme Super oxide dismutase (S.O.D) and enzyme Ascorbate peroxides (APX),reaching the highest rate of effectiveness of the enzyme at the concentration 0f 60% compared with the comparative treatment , whil the highest average of the effectiveness of enzyme Catalase (CAT)and glutathione piroxidase (GP)and polyphenoloxidase (ppo)was at the concentration 20%sea water then it started to decline when increasing the concentration of sea water from 40 to 60% As for the algae extract it has been shown from the results of the current study that the addition of algae extract to nutrient medium to a high effectiveness of enzyme SOD,CAT ,APX and GP and more significant with all concentration of sea water The impact of algae extract on the effectiveness of the enzyme PPO has led to increasing the effectiveness of this enzyme but did not amount to a significant level except with sea water nutrient medium .G - The results of the current study showed a significant increase of the Amber cutivar in the percentage of the callus induction and the required time of this induction as well as the Wight of the initial and embryo callus ,number and germination percentage of thesomatic embryo , number of plantlets ,as wall as the percentage of the accumulation of potassium ,phosphorus ,calcium, and manganese ions ,as will as in the potassium/sodim ratio focus histidine proline and the effectiveness of the enzyme SOD and CAT enzyme and enzyme GP. While the product was higher than in the accumulation of Firat magnesium ion ,zinc copper and in the effectiveness of the enzyme in APX & PPO . .

واقع التلوث بالمركبات الهيدروكابونية في المياة والرواسب وبعض الاحياء المائية في مهر الكحلاء محافظة ميسان / العراق == The Status of Hydrocarbon Compounds Pollution of Water, Sediments and Some Aquatic Biota in Al - Kahlaa River - Missan Province /Iraq

Author name: صالح حسن جازع
Supervisor name: عبد الحسن يوسف العضب | حامج طالب السعد
General topic: Biology
Degree: Doctorate
Language: English
University location: Basrah
First pages:
Abstract: The present study was performed to have knowledge of hydrocarbon compounds pollution status in the water (dissolved and particulate fractions),sediments ,two species of aquatic plants (Ceratophyllum demersum and Paspalum pespaioides) ,two species of fishes(Liza abu and Carassius auratus) and one species of molluscs (Pseudodantopsis euphraticus) .The samples were collected monthly for the period November 2012 to October 2013 from four different stations ) Al - Magideh, Treatment unit, Al - Husaichi and Al - Zubair) distributed along Al - Kahlaa River in Missan province , in addition to Reference station lies on the Tigris River before entering Amara district about 25 Km .The sampling's months were divided into four typical seasons although this is incompatible with Iraq climate.As well as measures of some ecological parameters (water and air temperatures ,pH ,turbidity, electrical conductivity ,dissolved oxygen , biological oxygen demand BOD5 and total suspended solid) which ranged between 22 and 42 C˚ , 18 and 31 C˚ , 6.9 and 7.82 , 42 and 172 NTU , 12 and 118 μS/cm , 4.66 and 9.25 mg/l , 1.46 and 5.04mg/l ,33 and 108 mg/l respectively .In addition to that the Organic Matter(OM) and the texture were measured in the sediment samples. OM values ranged between 0.078 and 0.927% , whereas the percentage of the texture was ( 15 %clay, 71% silt and 14% sand),(31 %clay, 63% silt and 6% sand), (33 %clay, 57% silt and 10% sand) , (40 %clay, 47% silt and 13% sand) and (18 %clay, 55% silt and 27% sand) in Al - Magideh, Treatment unit , Al - Husaichi , Al - Zubair and Reference stations respectively .The concentrations of total petroleum hydrocarbons (TPHs)were measured by using spectrofluorometer. Concentrations of total petroleum hydrocarbons in dissolved fraction ranged between 1.36 μg/l in Reference station and 13.87 μg/l in Treatment unit station during summer and winter respectively ,and in particulate fraction between 2.69 μg/g dry weight in Reference station and 29.92 μg/g dry weight in Treatment unit station during summer and winter respectively ,while in sediments they ranged between 3.16μg/g dry weight in Reference station and 135.18 μg/g dry weight in Treatment unit station during summer and winter respectively. Concentrations of total petroleum hydrocarbons in C. demersum ranged between 5 μg/g dry weight during winter and 58.97 μg/g dry weight during summer , while in P. pespaioides between 3.18 μg/g dry weight during winter and 43.44 μg/g dry weight during summer. Concentrations of total petroleum hydrocarbons in L. abu ranged between 4.81 μg/g dry weight during spring and 37.3 μg/g dry weight during summer ,while in C. auratus between 2.51 μg/g dry weight during spring and 29.303 μg/g dry weight during autumn . Concentrations ofbtotal petroleum hydrocarbons in P. euphraticus ranged between 5.98 μg/g dry weight during spring and 119.75 μg/g dry weight during summer .The concentrations of Polycyclic Aromatic Hydrocarbons(PAHs) and n - alkanes were determined in the laboratories of Nihran Omer (South Oil Company in Basrah province ) ,using Gas Chromatography.Total concentrations of n - alkanes in dissolved fraction ranged between 0.027μg/l in Reference station and 0.192 μg/l in Al - Husiachi station during winter and between 0.016 μg/l in Reference station and 0.039 μg/l in Treatment unit during summer ,and for particulate fraction between 0.108 μg/g dry weight in Reference station and 2.096 μg/g dry weight in Treatment unit station during winter and between 0.101 μg/g dry weight in Reference station and 0.160 μg/g dry weight in Treatment unit station during summer ,while in sediments they ranged between 4.491 μg/g dry weight in Reference station and 51.32 μg/g dry weight Treatment unit station during winter and between 2.31 μg/g dry weight in Reference station and 19.31 μg/g dry weight in Treatment unit station during summer.The range of carbon chain length of n - alkanes in dissolved fraction ranged from C8 to C34 and in particulate fraction from C15 to C34 distributed in two patterns ,the first pattern included compounds between C8 and C25 with the abundance of C19,C21,C23 and C25 odd carbon number of and C18,C20,C22 and C24 for even carbon number ,while the second pattern included compounds with the range from C26 to C35 predominated by C27 and C29 odd carbon number and C26,C28 and C30 even carbon number.In sediments they ranged from C14 to C35 and distributed in two patterns, the first pattern included compounds between C8 and C25 with the abundance of C17,C19 and C21 odd carbon number and C18,C20 and C22 for even carbon number ,while the second pattern included compounds with the range from C24 to C35 with predominance of C31and C33 odd carbon number and from C24 to C34 even carbon number.Total concentrations of n - alkanes in C. demersum ranged between 6.467 μg/g dry weight during spring and 59.483 μg/g dry weight during summer ,whereas in P. pespaioides between 34.7 μg/g dry weight during winter and 166.6 μg/g dry weight during summer .The distribution of n - alkanes compounds in plants chain length ranged from C15 to C35 with bimodal from C15 to C27and from C28 to C35 with predominance of C17 to C25 odd carbon number and C18 to C24 even carbon number in the first one ,whereas in the second the dominance compounds were from C29 toC33 for odd carbon number and from C26 to C32 even carbon number.cTotal concentrations of n - alkanes in muscles of L. abu ranged between 14.60 μg/g dry weight during winter and 73.15 μg/g dry weight during summer and C. auratus between 34.76 μg/g dry weight during winter and 166.61 μg/g dry weight during summer . The distribution of n - alkanes compounds in fish muscles chain length ranged from C16 to C35 with bimodal from C16 to C25 and C26 to C35 with predominance of C17 to C25 and C18 to C24 for the first one ,and from C27 to C33 and from C26 to C34 for the second. These reflected nutrition nature for these kinds of fishes which depend on algae ,phytoplankton ,zooplankton ,diatoms ,insects and crustacean . While in the mollusc (P. euphraticus) ranged between 95.16μg/g dry weight during spring and 220.36 μg/g dry weight during summer. The distribution of n - alkanes compounds in P. euphraticus chain length ranged from C14 to C35 with bimodal from C14 to C27 and from C28 to C35 with predominance of C17 to C21 and from C18 to C24 for the first one ,and from C29 to C33 and from C30 to C34 for the second.The values of Carbon Preference Index (CPI) and pristane to phytane ratio was calculated to know the hydrocarbon compounds source in water ,sediments and biota of Al - Kahlaa River ,since the CPI value ranged between 0.142 and 1.314 in dissolved fraction and between 0.045 and 2.193 in particulate fraction , 0.160 and 1.872 in sediments,1.075 and 8.638 in plants , 0.285 and 1.537 in fishes and between 0.354 and 4.457 in mollusc .Whereas the values of pristane to phytane ranged between not detected and 1.579 in dissolved fraction , not detected and 0.601 in particulate fraction , 0.447 and 3.008 in sediments, not detected and 0.821 in plants , not detected and 2.176 in fishes and between 0.822 and 1.347 in mollusc .These indicate that there are two sources of hydrocarbon compound in water ,sediments and biota ,biogenic from living organisms and anthropogenic from domestic ,industrial and petroleum pollutants except in plants .Total concentrations of PAHs in dissolved fraction varied from 0.739 ng/l in Reference station to1.974 ng/l in Treatment unit during winter ,and from 0.300 ng/l in Reference station to1.125 ng/l in Treatment unit during summer ,and in the particulate fraction they varied from 0.79 ng/g dry weight in Reference station to 24.42 ng/g dry weight in Treatment unit during winter ,and from 4.369 ng/g dry weight in Reference station to10.545 ng/g dry weight in Al - Husaich during summer ,while in sediments they varied from 4.906 ng/g dry weight in Reference station to 35.479 ng/g dry weight in Treatment unit during winter ,and from 2.391 ng/g dry weight in Reference station to 25.886 ng/g dry weight in Treatment unit during summer.It had been noticed that there were a predominance of high molecular weight PAHs on low molecular weight PAHs ,while Benzo(a)dAnthracene/(Benzo(a)Anthracene+ Chrysene) BaA/(BaA+Chr) ratio ranged from 0.218 to 0.804 in water and 0.520 to 0.66 in sediments. The Indeno (1,2,3 - cd)pyrene /(Indeno (1,2,3 - cd)pyrene + Benzo(ghi)perylene) InP/(InP+BghiP) ratio ranged between not detected and 0.578 in water and between not detected and 0.681 in sediments .The Fluoranthene/ Pyrene (Fl/Py)ratio ranged between 0.150 and 2.47 in water and between 0.10 and 8.490 in sediments ,this give an indication of the source of PAHs compounds in water and sediments which were mainly pyrogenic and few from them petrogenic .Total concentrations of PAHs in C. demersum ranged between 24.124 ng/g dry weight during winter and 87.289 ng/g dry weight during summer ,whereas in P. pespaioides between 1.616 ng/g dry weight durig winter and 16.661 ng/g dry weight during summer .The Lower Polycyclic Aromatic Hydrocarbons to Higher Polycyclic Aromatic Hydrocarbons ratio ranged between 0.006 and 0.009 in C. demersum and between 0.008 and 0.103 in P. pespaioides. TheBaA/(BaA+Chr)ratio ranged from 0.995 to 0.997 in C. demersum and 0.756 to 0.995 in P. pespaioides. The InP/(InP+BghiP) ratio ranged between 0.342 and 0.807 in C. demersum and between 0.19 and 0.645 in P. paspaloides . The Fl/Py ratio ranged between 0.096 and 0.988 in C. demersum and between 0.018 and 5.018 in P. pespaioides. These indicate that the sources of PAHs in these plants were both pyrogenic and petrogenic .Total concentrations of PAHs in muscles of L. abu ranged between 2.301 and 16.661 ng/g dry weight during winter and summer respectively and in C. auratus between 1.095 and 8.675 ng/g dry weight during winter and summer respectively ,whereas in mollusc (P. euphraticus) ranged between 1.86 and 6.88 ng/g dry weight during spring and summer respectively. According to ratios of Low Polycyclic Aromatic Hydrocarbons(LPAHs) to High Polycyclic Aromatic Hydrocarbons (HPAHs), BaA/(BaA+Chr), InP/(InP+BghiP) and Fl/Py ,they certainly reflected that the PAHs sources in fishes and mollusk are pyrogenic as a main sources and petrogenic as a small part .Also results of this study revealed the presence of seasonal and spatial variations in concentrations of TPHs ,n - alkanes and PAHs in water ,sediments and aquatic biota from Al - Kahlaa River ,the highest concentrations were recorded during winter whereas the lowest during summer ,also the highest values of these compounds were recorded in Treatment unit station in comparison with other stations.

تقييم تلوث الهواء باستعمال دليل نوعية الهواء AQI ودليل التحول APTI لبعض المواقع المختارة في محافظة البصرة == Assessment of air pollution using AQI and APTI indices in selected locations of Basra governorate

Author name: شيماء هشام شهاب الدين
Supervisor name: نايف محسن عزيز
General topic: Biology
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The current study has been done for period from December to January 2015 including five station in three replicate for each station distributed in Basra Province (Al - Qurna district ,city center - Ashar ,Altenuma, and Zubair as well as region which is called Abu Al Khaseb , it is chosen as a control station for being agricultural area. The samples have been collected monthly for evaluating the parentage of gas pollution concentration (CO2,CO,NOx,SO2 and TSP) . The concentration of gas is measured by using gas analyzer device and the mount of particles in the air is measured by PDR - 1200. And black carbon ( BC) was measured by using Aethalometer . AQI was using for air quality for knowing the quality of surrounding air . Maps are drawn which show the spreading pollutants in Basra Province during the season by using GIS program . it is clear that there was differences concentration rates of pollutant gases in Basra province, the seasonally difference for gases pollutant proved that in Winter recorded high value for gases CO2, CO which reached 258.62 ppm for CO2 and 7.19 ppm for CO while in summer it is register the high value for NOx and SO2 which reached 0.406ppm for NOx and 0.319 for SO2 while TSP recorded difference reach high concentration 323.54 μg/m3 during Spring .While ,there is no difference has been recorded for black carbon in Autumn and Winter where as high concentration reached 25000 ng/m3 .The yearly difference in Al ashar shows that the highest for CO2 and CO during the period of studying followed by Al - Qurna recorded the highest concentration for NOx and SO2 while al - Zubair station recorded the highest concentration for TSP . Abu al Khaseb station recorded the lowest concentration for all gases and TSP because nature of the region which is formed from farms with lack of human activity .according to AQI which is use to measuringBthe air quality which shows the status of air and the degree of pollution , seasonally it is the highest rang for moderate in yellow color in Abu Khaseb station to unhealthy for sensitive groups in orange color in both al Zubair and Altenuma station where as al Qurna station recorded red color for unhealthy and in Al Ashar station they are record very unhealthy in purple color .while AQI for annually difference for the stations of study for unhealthy for sensitive groups in orange color for all stations except Abu Khaseb station , these groups are considered by negative affection human being health .Biochemical analysis has been done for leaves of plants that are spreading in the study area for knowing the effect of pollutants on biochemical indicators .The study included three kinds of plants which are phoenix dactylifera , ziziphus sp. And conocarpus lancifolius . Biochemical analysis test included total chlorophyll , water content, ascorbic acid and pH .the total chlorophyll estimated by using UV - spectrophotometer ,while ascorbic acid was estimated by using gas chromatography . The results shows significant different among leaves for different plants species in different study stations , the Date palm trees phoenix dactylifera recorded the highest concentration for total chlorophyll with the comparison with other plants. The seasonally differences show that lowest concentration of total chlorophyll in Winter reached 2.11 mg/g .The ascorbic acid recorded highest value in Winter reached 1.41 mg/ g and the water content rate of less recorded value in Spring reached %59.26 with no differences are recorded in the rest of the seasons . pH was recorded the highest rang in Winter reached 7.53.Ziziphus sp. recorded the lowest content of total chlorophyll for Winter reached 1.87 mg/ g and ascorbic acid recorded the highest value in Winter 1.31 mg/ g . whereas there was no significant different in water content in all seasons .pH recorded the high rang 6.64 in Winter , there were no significant in the rest of the season .Conocarpus lancifolius recorded the lowest value of total chlorophyll comparison with the other plants .while the lowest value for total chlorophyll recorded 1.42 mg/g in Winter . Ascorbic acid reached the highest concentration 1.31 mg/ g in Winter , while the water content recorded the lowest value in Winter 36 .88 % . While pH recorded 5.80 the lowest value in Winter.According to the biochemical analysis for plants for getting the value APTI for knowing the ability of tolerance of plants for air pollution which reflects the capability of the plants to tolerance of air pollution . The result of the study shows that Phoenix dactylifera recorded the highest value 7.36 in Al ashar station where as there are no significant recorded among the other station . Ziziphus sp. recorded the highest value 6.41 in al - Qurna station followed by al - Ashar station 6.07 whereas the other station did not recorded any significant . It has been noticed that Conocarpus lancifolius shows that lowest value of APTI which reached 3.91 in Al Zubair station and there were significant differences among the other stations.APTI was used for getting the value of Anticipated Pollution Index (API) which estimating biological characteristic and the economic value for plants. The results of API showed that the plants in Basra province Phoenix dactylifera recorded the value 6 and it was in excellent category. Ziziphus sp. recorded as poor plants recorded the value 2 . while Conocarpus lancifolius recorded the value 1 category as very poor plants.it has been noticed from values of APTI and API for phoenix dactylifera makes it typical plants as bioindicator and reducing the pollution .It is concluded for the current study that there are variation quantity and quality for gases and obvious spread for it is concentration of polluted gases and particles in air of the study stations in Basra. It was found that Phoenix dactylifera is a typical plants for using as bioindicator and reducing the air pollution .

خصائص خمائر البيئة النهرية لمحافظة البصرة وقابلية بعضها على المعالجة الحيوية للعناصر الثقيلة والهيدروكربونات النفطية == Characterization of yeasts in river habitat in Basrah Province and an ability of some of them for Bioremediation of the heavy metals and oil hydro carbonate

Author name: سناء قاسم بدر
Supervisor name: باسل عبد الزهرة عباس
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:

تاثير هرمون الثايروكسين على بعض المعايير الوظيفية للدم وبعض الجينات المنظمة لتمايز النسيج العظمي في الفئران المختبريةmusculus L. Mus. == Effect of Thyroxine hormone on some of physiological parameters of blood and some regular genes of bone differentiation in Laboratory Mice Mus musculus L.

Author name: سلمى سعيد عباس
Supervisor name: سامي جبر المالكي | علي عبد اللطيف العلي
General topic: Biology
Specific topic: Zoology - Physiology
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: اجريت الدراسة الحالية لمعرفة تاثير هرمون الثايروكسين على تمايز العظم وبعض المعايير الفسلجية والتي شملت المعايير الدموية والهرمونات المحرضة للقند واوزان واطوال الاجنة واوزان المواليد في الفئران المختبرية البيضاء Mus musculus L.,اذ قسمت اناث الفئران المختبرية في الدراسة الحالية على مجموعتين هما : المجموعة الاولى الرئيسية : لدراسة تاثير هرمون الثايروكسين L.Thyroxine hormone على المعايير الدموية للاناث الحوامل وغير الحوامل وعلى تمايز العظم في الاجنة(باستخدام طريقة تحضير المقاطع النسجية الاعتيادية للاجنة والطريقة الجزيئية باستخلاص المادة الوراثية (RNA) من الاجنة وباستخدام تقنية النسخ العكسي RT - PCR والبلمرة الكمية qRT - PCR ومعرفة تاثيره على اوزان المواليد والاجنة, وتالفت من 90 انثى بالغة بعمر(10 - 12)اسبوع وقسمت على مجموعتين ثانوية ,و هي مجموعة السيطرة والتي حقنت حيواناتها بـ 0.1 مل من المحلول الفسيولوجي0.9% ولمدة 10 ايام متتالية.بينما المجموعة المعاملة حقنت حيواناتها بـ0.1 مل من هرمون الثايروكسين وبجرعة مقدارها 0.5 ملغم /كغم/يوم ولمدة 10 ايام يوميا بعدها شرحت 5 اناث من كلا المجموعتين ,و زوجت 40 انثى المتبقية ولكلا المجموعتين مع الاستمرار بالحقن لحين تشريح الاناث واستخراج الاجنة خلال فترات عمرية متباينة (9و10و11و12و13و14و15) يوم.اما المجموعة الثانية الرئيسية خصصت لدراسة تاثير هرمون الثايروكسين على الهرمونات المحرضة للقند وهرمونات الدرقية وانزيم Alkaline phosphatase.وتتالف من 15 انثى وقسمت على ثلاث مجاميع ثانوية تضم كل منها (5) اناث, وهذه المجاميع هي : مجموعة السيطرة وحقنت بـ0.1 مل من المحلول الفسيولوجي 0.9%.ومجموعة المعاملة الاولى وحقنت بـ0.1 مل من محلول هرمون الثايروكسين وبجرعة 0.5 ملغ/كغم/يوميا ولمدة 15 يوم للاناث العذارى قبل التزاوج.ومجموعة المعاملة الثانية حقنت بـ0.1 مل من محلول هرمون الثايروكسين وبجرعة 0.5 ملغ/كغم/يوميا ولمدة 30 يوم . اظهرت نتائج الدراسة الحالية ان المعايير الدموية قد تباينت قيمها خلال الفترات الزمنية وللمجموعات ضمن المدى الطبيعي عدا في حالات قليلة ,اذ وجد هناك انخفاض معنوي في اعداد خلايا الدم البيض والخلايا الحبيبية والخلايا الوحيدة والخلايا اللمفية والنسب المئوية للخلايا الحبيبية والوحيدة واللمفية واعداد كريات الدم الحمر,وكذلك قيم مستوى كمية الهيموكلوبينHb والنسب المئوية لحجم الدم المضغوط PCV(HCT)% ومعدل كمية الهيموكلوبين MCHومعدل تركيز الهيموكلوبينMCHC ومعدل حجم كريات الدم الحمرMCV والصفيحات الدموية PLT في فترات متباينة من الحمل للمجموعة المعاملة مقارنة مع مجموعة السيطرة. وبينت النتائج وجود زيادة معنوية في خلايا الدم البيض والخلايا الحبيبية والخلايا الوحيدة والخلايا اللمفية والنسب المئوية للخلايا الحبيبية والوحيدة واللمفية, ومعدل تركيز الهيموكلوبينMCHC والنسبة المئوية لحجم الدم المضغوط %HCT ومعدل حجم كريات الدم الحمر MCVو الصفيحات الدميةPLT في مدد متباينة من الحمل للمجموعة المعاملة مقارنة مع مجموعة السيطرة. وسجلت نتائج الدراسة الحالية حصول ارتفاع معنوي في قيم هرموني T4,T3في الحيوانات المعاملة مع انخفاض معنوي في تركيز هرمون TSHفي الاناث المعاملة مقارنة مع السيطرة,و اوضحت النتائج ايضا انخفاضا معنويا في مستوى الهرمون اللوتيني LH وهرمون الحليب وللمجموعتين(15و30) يوم وزيادة معنوية في الهرمون المحفز للجريبات FSHللمجموعة الثانية(30 يوما) ,مقارنة مع مجموعة السيطرة, ولايوجد تاثير معنوي لهرمون الثايروكسين على هرمون الشحمون الخصوي ولنفس الفترتين مقارنة مع مجموعة السيطرة, وحصلت زيادة معنوية في مستوى انزيم الفوسفاتيز القاعدي بعد 30 يوما من الحقن بهرمون الثايروكسين مقارنة مع مجموعة السيطرة ,وحصول انخفاض في اوزان الاجنة بعمر 15يوما والمواليد للاناث المعاملة مقارنة مع مجموعة السيطرة , وبينت الدراسة زيادة معنوية في اطوال الاجنة المعاملة بعمر 9 و10و11و15يوما مقارنة مع مجموعة السيطرة. اما الدراسة النسجية فقد بينت ان الهيكل العظمي في الاجنة بعمر 9و10و11 يوما عبارة عن بداءات اعضاء تتكون من نسيج ميزنكيمي,ولم تسجل الدراسة النسجية وجود فرق بين مجموعة السيطرة والمعاملة في تمايز العظم .وظهرت بداية التعظم الغشائي والغضروفي في الاجنة بعمر12يوما ,اذ لوحظ بداية تمايز الخلايا الميزنكيمية الى ارومات عظمية,مع وجود القليل من المادة البينية الشبيهة بالعظم بين الارومات العظمية في منطقة الفك السفلي قرب غضروف ميكل ,والفك العلوي والعظم الحنكي واللامي وغضاريف الاضلاع ,اما في الاجنة بعمر13 و14و15يوما فقد ازدادت عمليات تمايز العظم بنوعية ,فاضافة الى النمو الذي حصل في العظام السابقة في تكوينها فقد ظهرت عظام جديدة في مناطق اخرى من هيكل الجنين تمثلت بعظام الصفيحة القاعدية والفخذ وحزام الكتف وحزام الحوض والاضلاع ,اما النتائج الجزيئية الخاصة بتمايز النسيج العظمي في اجنة الفئران المختبرية فقد اشارت الى التعبير الجيني لبعض جينات النسيج العظمي وتشمل Runx2وOSX وOsteo(OSC) وSialo(BSP) والتي بلغت ذروتها في مرحلة (13) يوم. ان لهرمون الثايروكسين تاثير على التعبير الجيني لبعض الجينات التي ترتبط مع التمايز النسجي للعظم اذ يؤدي هذا الى التغير في التعبير الجيني زيادة احيانا وانخفاضا خلال المدد العمرية المختلفة للاجنة .نستنتج من الدراسة الحالية ان زيادة مستوى هرمون الثايروكسين يسبب اضطراب في المعايير الدموية والتعبير الجيني لجينات العظم وانخفاض مستوى الهرمونات المحرضة للقند (LH وProlactin) وزيادة مستوى الهرمون المحفز للجريبات, وتعد هذه الدراسة الاولى على مستوى جامعة البصرة | the present study was performed to know the effect of thyroxine hormone on differentiation of bone tissue and some of physiological parameters, which included blood parameters and Gonadotropine hormones and Weights and Lengths and birth weight of mus musculus L.the females are divided into two groups ;the main first group which included 90 adult females (10 - 12)week, that subjected to study effect of thyroxine hormone on blood parameters of pregnant , nonpregnant females ,and bone differentiation of embryos (by using tissue sections method and molecular technique by RT PCR , and qRT PCR), and also known it is effect on weight of fetus and newborns; this group was also subdivided into two secondary subgroup : - control group ; was injected with 0.1 ml of normal saline (0.9%) for 10 consecutive days ,and treated group; was injected with 0.1 ml of thyroxine hormone (0.5mg/kg/day) for 10 consecutive days ,after that, 5 females from both groups were anatomized,while 40 females were mated of the both groups with continuous of injection until the females were subjected to anatomical practices and then the the embryo were taken during varied peroids (9,10,11,12,13,14,15) day. The main second group which included 15 females ,was selected to study the effect of thyroxine hormone on ;sexual hormone ,thyroid hormone and alkaline phosphatase . this group was divided into another 3 subgroups,one regarded as control group which ; was injected with 0.1 ml of normal saline (0.9%) for 15 consecutive days.and second the first treated group (T1) ; was injected with 0.1 ml of thyroxine hormone (0.5mg/kg/day) for 15 consecutive days ,and without mating of the females,and the second treated group ; (T2);was injected with 0.1 ml of thyroxine hormone (0.5mg/kg/day) for 30 consecutive days and also without mating of the females. Results of the present study were shown that the blood parameters were varied in value between periods and groups (decreasing and increasing among normal value ) with exception in few cases , significant decrease of W.B.C , the granular cells ,monocytes, lymphocytes ,lymphocytes percentage ,granulocytes percentage and monocytes percentage during different periods of pregnancy in the treated animals compared with control , and was decreased RBC ,Hb ,HCT percentage ,MCH ,MHCH ,MCV, and PLT in varied periods , and we noticed a significant increase in WBC ,granular cells ,monocytes ,lymphocytes , granulocytes percentage , monocytes percentage , MCHC ,HCT percentage,MCV, and PLT in varied periods of pregnancy in the treated animals compared with control. Our study was exhibited significant increase in levels of T3 and T4 hormones of the treated animals compared with control, with significant decrease in TSH of treated animals , also significant decrease in LH and prolactin H and for groups(15 and 30 days) ,and significant increasing in FSH of second group (30 day) ,when compared with the control , and there was no effect of thyroxine on TEST H level and for 2 periods(15 and 30) , significant increasing in alkaline pho after 30 days from injection with TH H , decreased of body weight of embryos (15 days) and newborns of the treated females ,the current study showed significant increase of lengths of treated embryos (9,10,11,15 days). The histological study was explained the skeletal tissue ossification of embryos during (9,10,11)day post gestation was primitive organs of mesenchymal tissue and The histological study was not show asignificant differences of bone differentiation between treated and control groups,and intramemberaneous ossification was appeared of embryos at 12 days ,in this stage the begining of differentiation of mesenchyme cells was appeared into osteoblast , with a little of matrix like bone between osteoblasts in Mandible near the meckle cartilage , Maxilla, Palatine,and Hyoid, and endochondral ossification as in Ribs, where in embryos (13,14,and 15) The bone differentiation processes were increased of bone (the intramembranous ossification and endochondral ossification),in addition to the growth of previously formed bones,also new bones were appeared in different areas in embryo skeleton like Basal plate,femur,Scapula girdle , pelvis girdle and the Ribs . In other hand, the molecular results of bone differentiation in embryo ,were exhibited peak of expression of some of the genes of bone tissue (Runx2 ,OSX, Osteo(OSC) ,and Sialo(BSP) ) at 13 days of embryo age, also the thyroxine hormone was effected in expression of some the bone genes that included disturbanceas like increasing of expression during peroids and decreasing in other peroids of embryos life. We concluded from the present study that the increase of thyroxine hormone level caused disturbances of blood parameters and gene expression of the bone genes & decreasing of the level of LH & prolactin hormones and increase the level of FSH. This is the first study on the Basrah University

دراسة مقارنة لتاثير هرمون النمو في عضلات وCyprinus مناسل سمكتي الكارب الاعتيادي والبلطي احمر البطن carpio (L. 1758) Tilapia zillii (Gervais, 1848 == A Comparative Study to the Effect of Growth Hormone on Muscles and Gonads of Carp Cyprinus carpio (L. 1758) and Tilapia Tilapia zillii (Gervais, 1848)

Author name: سعد محمد صالح عبد الصمد
Supervisor name: عقيل جميل منصور | عبد الكريم طاهر يسر
General topic: Biology
Specific topic: Life Science
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: In the present study, the effect of human growth hormone on the muscles and gonads of common carp Cyprinus carpio (L. 1758) and red belly tilapia Tilapia zillii (Gervais, 1848) was studied by : - 1 - Studying the effect of human growth hormone on the growth of the two studied species by intraperitoneal (IP) injection of three replicates of control with 120 μg of normal saline / g Body weight and two doses (low and high) with 60 and 120 μg of human growth hormone / g Body weight respectively for both species, then changes were followed up in each treatment after every two weeks of injection by : - a - Pursue histological changes in the muscular tissue by using Cell Profiler software for the first time in Iraq. b - Pursue changes in chemical components ratios of body muscles.c - Measuring of specific growth rate and length - weight relationship for fishes.2 - Studying of human growth hormone effect on the gonads of fishes (adult males and females) with 60 males for each species and a same number of females, all of them injected either with low or high dose with 60 or 120 μg of human growth hormone / g Body weight respectively for both species or with 120 μg of normal saline / g Body weight in fishes of control. This experiment had achieved in a month.3 - Knowing the direct effect of human growth hormone on the follicles by implementing an in vitro experiment with the follicles of carp which implanted in basic salt solution (BBS) then growth hormone was added to the test tubes with two concentrations 5 μg/ ml and 10 μg/ ml, the control follicles were implanted in normal saline. The results of the study revealed that the maximum rate of percentages of the muscle fibers with area less than 314 μm2 for region R1(Dorsal side) was 88.29 % in carp in high dose treatment after the eighth week of injection, while it was 88.00 % for tilapia in high dose treatment after the eighth week of injection, too.In the region R2 (in tail) the maximum rate of percentages of muscle fibers with area less than 314 μm2 was recorded after the eighth week from the beginning of injection was 73.3553 % for carp in high dose treatment and 85.935% for tilapia in high dose treatment.The results showed that 1.00984 and 1.000074 were the highest and the lowest values of condition factor for carp respectively. For tilapia those were 1.009993 and 1.000151 the highest and the lowest values of it respectively.The rate of specific growth rate for length was 0.3616 and 0.44866 cm/day% for carp and tilapia respectively. While the specific growth rates for weight were higher than the comparable one for length and were 1.3489 g/day% for carp and 1.6085 g/day% for tilapia.The results exhibited that the rates of protein percentages for both species in the all treatments in general tend to be higher with progressing of experimental time. Muscle water content percentage rate varied with difference of dose and experimental time. The maximum rate of fat percentage in both species was in control treatment after two weeks of hormone administration.The highest rate of carp male Gonadosomatic index was 6.55% in high dose treatment after the third week of injection, as for tilapia males was 6.103% in low dose treatment after the third week of injection, while the lowest value for this index was recorded after the first week of injection in high dose treatment which as 2.81 and 2.89% for carp and tilapia respectively. For females the highest rate of Gonadosomatic index was in high dose treatment after the third week of injection for both species which was 11.001 and 6.0624% for carp and tilapia respectively. As for the lowest rate of carp female Gonadosomatic index was recorded in control treatment after the first week of injection it was 5.54%, while the lowest rate of this index for tilapia females was 2.99% in low dose treatment after the first week of injection.In the experiment of direct effect of this hormone on the follicles of carp it was found that the highest value of polarization index was 4.12 which recorded in high dose treatment after 48 hours of incubation while it reached the lowest value which was 3.031 in high dose treatment after 24 hours ofincubation.

دراسة تصنيفية وحياتية للفطريات الناقصة الملونة في البصرة == Taxonomical and Biological study of Dematiaceous imperfect - fungi in Basrah

Author name: زينب خلف عبد الله
Supervisor name: توفيق محمد محسن
General topic: Biology
Specific topic: Microbiology - Fungi
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: During this study 23 species belong to 10 genera of imperfect fungi were isolated from different natural sources ( plants, soil , and ari) from Basrah govermanete using different isolation methods.Among the isolated fungi the genus Alternaria was selected to identify its species by using the morphological characteristis by light microscopy and Scaning Electron in Microscope (SEM) and verified by molecular and chemical methods. Eight species of Alternaria were identified namely; A.alternata (isolate1 and 2) A.chlamydospora A.citri, A.raphani , A.longipes , A.infectoria A.tenuissima and A.chrysanthemi based on light microscope examination.Taxonomic relegation of these species were confirmed by SEM image. SEM revealed that there was differences in the conidial wall ornamentation .The molecular analysis using PCR depending on the loci ITS1, and ITS4 700bp which confirmed the morphological identification of most of species namely A.alternata (isolate 1 and 2) , A.chlamydospora , A.longipes , A.infectroia and A.tenuissima. However , A.citri was related to A.alternata, A.raphani was belonged to A.infectoria and A.chrysanthemi is belonging to A.lolii. Nevertheless ,by using the loci OPA1 - 3 there was no variation among the species of Alternaria ,this is may be due to the inadequate method applied.The genetic variation of 36 isolates of A.alternata was studied using 9 - primers by RAPD - PCR technique. All primes gave an amplification of DNA for all the fungal isolates. Among the primers OPC08 exhibited a highest efficacy reaching 235 total bands .In the present study the antibacterial activity of fungal crude extract was tested. It appeared that the extract exhibit an antibacterial bioactivity against E.coli , S.aureus , S.epidermidis and S.saprophyticus.However, the extract of A.alternata (isolate 1 and 2) showed an inhibition growth against all the tested bacterial strains. This study was also revealed that the fungal filtrates of Alternaria species possessed various chemical compounds. However, there were differences in the chemical composition among the fungal filtrates.The results showed that Alternaria species ( A.alternata isolate 1 and 2, A.chlamydospora A.citri, A.raphani , A.longipes) were capable to biosynthesize silver nanoparticles, when the fungal filtrate were treated with AgNO3 solution after72 hrs incubation .Silver nanoparticles synthesis was checked by the change of colour from yellow to brown and confirmed by Uv - vis spectrophotometry at wave length (420, 440 nm). SEM image showed that the silver nanoparticles with spherical shape and size ranged between (20 - 72nm). Aconclusion can be derived that application of SEM,chemical analysis of fungi extracts ,molecular analysis and the silver nanoparticles characteristics are useful in the taxonomy of fungi to solve the overlapping of the morphological identification .Taxonomic key were prposed for the species of the genes Alternaria based on the morphology , chemical compound with the fungal extracts and size of silver nanoparticles synthesized by fungi .Melanin pigment identify by TEM microscope and it appeare like dark drop inside the cell .

دراسة مجتمعات اللافقريات القاعية الكبيرة في ثلاث بيئات مائية مختلفة في جنوب العراق == Synecology of Macrobenthic Invertebrates of Three Different Aquatic Habitat at Southern Iraq

Author name: رغد زيدان خلف
Supervisor name: هيفاء علي حمزة | مرتضى يوسف العباد
General topic: Biology
Specific topic: Zoology - Invertebrates
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The present study aimed macrobenthic invertebrats communites in three different aquatic environments southern Iraq. Eight stations were chosen for this purpose, Four of them distinction by being with running water and affected with the tide of Arabian Gulf,these include two stations on each of Shatt Al - Arab River (Al - Mohamadiat and Al - Salihia) and east part of Al - Hammar marsh (Al - Burgah and multaqaa Al - Mashab and Al - Sallal).the other four stations were not affected with the tide and located on the central marshes, two stations on each of Aum Al - Showaich marsh (Al - Sibitia and Al - Badria) and Al - Chebaeish marsh (Abu Sobat and Al - Sihaqee).The samples of water and sediment were collected monthly during the period from April 2014 to March 2015.Some environmental factors for each station were measured these include air and water temperatures, pH ,electrical conductivity, turbidity, dissolved oxygen, biological oxygen demand, total dissolved soild, total hardness, Calcium, nitrate , reactive phosphate, sulphate, total organic carbon and soil texture. The macrobenthic invertebrates samples which collected by Three replicates monthly for each station were isolated and identified,then densities and relative abundance were calculated.Some ecological indices such as diversity, richness, evenness, dominance, beta diversity and similarity indices(qualitative and numerical) were studied. Canonical correspondence analysis was adopted to evaluate the effect of the measured environmental factors on the occurrence and density of the studied macrobenthic invertebrates.The results showed that the variables of the stations were ranged as below : Air temperature (12 - 44)C̊ ,while the water temperatures (10.6 - 35)C̊ , PH (7.5 - 9.1), EC (2.07 - 13.7) mS /cm, Turbidity (4.2 - 199) NTU, DO (5 - 11.5) mg/l , BOD5 (0.3 - 3.5)mg/l , TDS(1245 - 10220)mg/l , TH (531 - 2928) mg/l , Ca+2 (80.2 - 320)mg/l , NO3 - (0.26 - 15.25) mg/l , PO4 - 3 (0.032 - 2.9) mg/l , SO4 - 2 (250 - 910)mg/l , and for sediments : TOC (9.3 - 22.5)% and soil texture ranged between sandy silt to muddy silt.The total number of recorded taxes were 80,representing by 16 species belonging to Annalida, 36 genus to the Aquatic insects (28 genus of them were first record in the middle wetlands), 16 species to Crustacea and 12 species to Mullosca. The species Pomacea canaliculata was recorded for the first time from Shatt Al - Arab river. The recorded taxes were classified according to its occurrence periods into four classes : dominant, fluctuated, less abundant and rare.The monthly density of each taxa of macrobenthic invertebrate and for each main macrobenthic invertebrate group in all stations was calculated. The results revealed that the densities were ranged from( 0 - 7115, 0 - 485 , 0 - 703 and 0 - 1199) ind/m2 for the groups of annelid, aquatic insect, crustacean and mollusca respectively. While the total density of all macrobenthic invertebrate groups was ranged between( 0 - 7367) ind/m2.The results of annual relative abundance for each main macrobenthic invertebrate group in all study stations referred that the value 66.3% was recorded for the annelids, while the lowest one 6.1% was recorded for the aquatic insects. On the other hand, the annual relative abundance for each main group in each station was investigated, and was ranged between (0.9 - 68)% recorded in Shatt Al - Arab river stations for the groups of aquatic insects and annelids respectively,( 0.4 - 67)% recorded in east Hammar marsh stations for groups of water insects and mollusks respectively, and (1 - 82)% recorded in Middle marshes stations for the annelids. The annual relative abundance for total macrobenthic invertebrate group in all stations was ranged from (2 - 27)% recorded in Al - Sibitia and Al - Sihaqee stations respectively. The annual relative abundance for the species and genus which recorded during our study revealedthat all highest values (94, 96.58 and 100)% were recorded for the species Limnodrilus hoffmeisteri in stations of Shatt Al - Arab River, east Hammar marsh, and Middle marshes respectively.The monthly relative abundance for main macrobenthic invertebrate groups in all station was studied. The highest value which recorded from Shatt Al - Arab river stations (Al - Salihia station) was reached 95.8% and recorded for the annelids, while reached 100% either in east Hammar marsh stations(Al - Burgah) for the mollusks and in Middle marshes stations (Al - Sibitia) for the crustaceans.Some ecological indices for each for each main macrobenthic invertebrate group from all stations totally were calculated. About the spatial diversity the range of Shannon - Wiener diversity index were between 0 - 0.6674 for annelids, 0.8718 - 1.92 for aquatic insects,0.5404 - 1.917 for crustaceans and 0.3035 - 1.15 for mollusks, while were 1.076 - 2.085 for all the benthic groups totally.The values of Richness index were from 0 - 1.127 for annelids,0.778 - 3.683 for aquatic insects, 0.5212 - 2.104 for crustaceans and 0.2543 - 1.277 for mollusks, while were 2.321 - 5.225 for all the benthic groups totally. The values of Evenness index were ranged between 0 - 0.9629 for annelids,0.4649 - 0.7419 for aquatic insects ,0.3016 - 0.8327 for crustaceans, and were 0.2189 - 0.8974 for mollusks, while were 0.3121 - 0.77 for all benthic groups totally. The values of Dominance index were ranged from 0.6129 - 1 for annelids, 0.343 - 0.7736 for aquatic insects ,0.2991 - 0.8772 for crustaceans,0.5075 - 0.9845 for mollusks while were 0.2638 - 0.7762 for all benthic groups totally.About the temporal diversity the values of Shannon - Wiener diversity index were between 0 - 0.99 for annelids, 0 - 2.01 for aquatic insects, 0 - 1.5 for crustaceans and 0 - 1.637 for mollusks, while were 0 - 1.981 for all benthic groups totally. The values of Richness index were from 0 - 0.969 for annelids, 0 - 2.717 for aquatic insects, 0 - 1.314 for crustaceans and 0 - 731 for mollusks, whilewere 0 - 3.047 for all the benthic groups totally. The values of Evenness index were ranged between 0 - 1 for each of annelids, aquatic insects and crustaceans, and were 0 - 0.992 for mollusks, while were 0 - 971 for all benthic groups totally. The values of Dominance index were ranged from 0 - 1 for each of four benthic groups, while were 0.3 - 1 for all benthic groups totally.Whittaker Beta index between the three different aquatic habitats for each main macrobenthic invertebrate group was calculated. The lowest value 1.14 was recorded for the mollusks between the middle marsh of um Al - Shoowaich and Al - Chebaeish, and highest value 1.66 was recorded for the aquatic insects between the east Hammar marsh and marsh of Al - Chebaeish, while the index values for all groups of macrobenthic invertebrate totally were ranged from 1.33 between the Shatt Al - Arab river and east Hammar marsh to 1.54 between the Shatt Al - Arab river and marsh of Al - Chebaeish.Jaccard Similarity index for each main macrobenthic invertebrate group for each stations was calculated.The values of index for annelids were ranged from( 0 - 89)% the lowest value recorded between Al - Burgah and Al - Sibitia stations and the highest value between Al - Salihia and Multaqaa of Al - Mashab and Al - Sallal stations, for the aquatic insects the values of index between (8.3 - 46.7)% the lowest value between Al - Salihia and Al - Sibitia and the highest value between Al - Mohammediat and Al - Badria stations, for the crustaeceans values ranged(14.3 - 77.8)% the lowest value between Al - Mohammediat and Al - Badria stations while the highest value between Al - Sibitia and Al - Badria,and for mollusks were between(18 - 80)% the lowest value between Al - Mohammediat and Al - Burgah stations while the highest value between Multaqaa of Al - Mashab and Al - Sallal and Abo Sobat stations.The index for all macrobenthic invertebrate groups totally also calculated and its values were from (15 - 58.5)% recorded between Al - Mohammediat with Al - Sibitia stations and between Al - Mohammediat with Al - Salihia stations respectively.Bray - Curtis index was calculated monthly for each main macrobenthic invertebrate group in each stations .Also the Bray - Curtis index was calculated annually between stations and the results refer that the highest values as the following : 0.993 for the annelids between Al - Badria and Al - Sihaqee stations, 1 for the crustaceans between Al - Salihia and Al - Sibitia stations, and 0.96 for the mollusks between Al - Sibitia and Abo Sobat stations.The highest value for all benthic group totally was 0.983 between Al - Salihia and Abo Sobat stations.On other hand Bray - Curtis index was calculated for all macrobenthic invertebrate groups totally between the three aquatic habitats and the values were ranged from 0.5 recorded between the wetlands of um Al - Shoowaich and Al - Chebaeish to 0.875 recorded between the east Hammar marsh and wetlands of um Al - Shoowaich.The Canonical Correspondence Analysis (CCA) by using Canoco application revealed the clear effect of different ecological factors on numbers of the individuals and species of each group of macrobenthic invertebrate in all stations during the study period.

الكساء الخضري والتنوع الاحيائي النباتي في منطقة الصحراء الجنوبية في محافظة البصرة / جنوب العراق == Vegetation and Plant Biodiversity in the Southern Desert in Basra Governorate, Southern Iraq

Author name: حيدر راضي مالح حسين
Supervisor name: عبد الرضا اكبر علوان المياح
General topic: Biology
Specific topic: Plant - Environment
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: تناولت الدراسة الحالية الغطاء النباتي والتنوع الاحيائي والمجتمعات النباتية في منطقة الصحراء الجنوبية ضمن محافظة البصرة, وتم دراسة الخصائص الكمية والنوعية للغطاء النباتي , فضلا عن خصائص الترب والهواء في 12 محطة, 6 منها خصصت للمسح الشهري للانواع للفترة بين كانون الاول 2012 وكانون الاول 2014.تم دراسة الخصائص الفيزيائية والكيميائية للعوامل البيئية في منطقة الدراسة وشملت حساب قيم درجة حرارة الهواء والرطوبة النسبية, وكذلك دراسة خصائص الترب ومنها قوام التربة ودرجة حرارة التربة ورطوبة الترب والاس الهيدروجيني والمادة العضوية والتوصيلية الكهربائية وقيم الملوحة, وتبين انها اظهرت تباينا موسميا في المحطات الستة. اوضحت الدراسة الحالية وجود 185 نوع و136 جنس تعود الى 41 عائلة, منها 159 نوع و115 جنس و36 عائلة تعود الى مجموعة نباتات ذوات الفلقتين, في حين ضمت مجموعة نباتات ذوات الفلقة الواحدة 26 نوع تقع في 21 جنس و5 عائلات, وكانت اغلبها نباتات حولية حوالي 66% , بينما كانت نسبة النباتات المعمرة 44 %, كما تم تسجيل حوالي 20 نوع لاول مره في مناطق الدراسة, كما اكدت التوزيع الجغرافي وسجلت انتشار العديد من الانواع في مناطق لم تسجل فيها سابقا.وبينت دراسة اشكال الحياة في منطقة الدراسة ان مجموعة Therophytes قد امتلكت اعلى نسبة بلغت 71.19%, بينما ضمت مجموعة ال Geophytes اقل نسبة بلغت 4.3 %. كما تغايرت الاصول الجغرافية النباتية Chorotype للانواع,عكست اهمية الموقع الجغرافي لمنطقة الدراسة, وسجلت العناصر ثنائية وعديدة المناطقBi & Pluri regional 70.7 elements % منها, وشكلت العناصر الصحراوية - العربية Sahara - Arabia elements نسبة 20.54%.وبينت النتائج ان اكبر العائلات انتشارا وتوزيعا وبعدد الانواع في منطقة الدراسة هي العائلة المركبة Compositae التي تعد اكبر العائلات في المنطقة, ثم العائلة الصليبية Cruciferae , والعائلة النجيلية Gramineae , والعائلة البقوليةFabaaceae , والعائلة الرمرامية Chenopodiaceae , كما تبين ان الاجناس Astragalus وPlantago وErodium كانت اكبر الاجناس بعدد الانواع في منطقة الدراسة, واظهر ت دراسة التوزيع الجغرافي ان بعض الانواع سجلت انتشارا واسعا في مناطق الدراسة ومنها Hammada salicornica Moq. وRhanterium epapposum Oliv.و Stipa capensis Thunb. وIflago spicata (Forssk) Sch. Bip. وFilago pyramidata L. وSpegularia diandra (Guss.) Heldr & Sart. وStrigosella grandiflora ( Bunge.) Boch. .كما تضمنت الدراسة وصف وتمييز المجتمعات الرئيسة وتحديد مناطق انتشارها في مناطق الدراسة وضمت Hammadetum salicornici وCornulacetum auchraeو Rhanterietum epapposi وZygophyllietum propinqun وAstragalietum spinosi وSalsoletum setiferaeو Convolvulietum oxyphylliو Salsoletum rosmarini وStipetum capensiو Ziziphetum nummulariaeو Teucriutum oliveriو Stipagrosis plumosi وLycetum barburae وSuaedetum aegyptiaci . واظهرت الدراسة التغيرات الموسمية في طبيعة الغطاء النباتي وتاثر السيادة بالتغيرات الموسمية في الظروف المناخية والتي ساهمت في ظهور المنطقة بعدد من المظاهر الموسمية للغطاء الخضري ( Seasonal Aspect) . وبينت نتائج الدراسة الحالية وجود تباين موسمي ومكاني بين غالبية محطات الدراسة في قيم ادلة الكثافة والوفرة والتغطية والتنوع والسيادة والتجانس والغنى النوعي والتشابه والكتلة الحية والتصاحب والاهمية.

دراسة جزيئية لتعدد الاشكال الوراثية لجين TAS2R38 (جين تذوق مادة PTC) بين سكان محافظة البصرة وعلاقتها بمرض السكري == A Molecular Study of TAS2R38 (PTC Tasting Gene) Polymorphism Among Basrah Population and It's Association With Diabetes Mellitus

Author name: حسنة عامر مهوس
Supervisor name: فائزة عبد الوهاب احمد | اسعد يحيى عايد
General topic: Biology
Specific topic: Microbiology - Genetics
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: This study dealt with the genetic polymorphism of Phenylthiocarbamide (PTC) tasting from phenotypic and genotypic (Molecular of TAS2R38(P49A) gene ) prospective,among sample of Basrah Population from 2014 - 2012. Also, a comparative Molecular study for the gene TAS2R38(P49A) and some biochemical parameters was made in a group of Diabetic patients for the first time in Iraq /Basrah and the world .Phenotypic study using the gradient dilutions of PTC substance method, was established among 317 individual : 96Males and 221 Females from different regions of Basrah. Increased sensitivity with low threshold 6 of Males than Females 5 was observed which indicate that the Males were more sensitive than Females in this region from Iraq .However, the tasters percent among Females still higher73.3% than Males72.9% ,and the whole population 73.2% as well .This study recorded different tasters percent in different regions : 62.1%,71.8% ,60.6%, 82.3% for the North ,AL - Zubair and Safwan, Abu - ALChaseab and AL - Fao and the center of the city respectively, although ,the whole population of Basrah found to be under Hardy - Weinberg Equilibrium . Allelic frequencies according to phenotypic analysis showed : recessive allele t had higher frequency (0.53) than dominant allele T (0.47), with elevated Heterozygous frequency Tt among all studied regions and the whole population(0.53) .The results recorded also , high BMI for non tasters tt as a whole and for both sexes in this phenotype : 28.32 ,28.26 for males and females respectively. While it had the lowest value among heterozygous 23.40 ,Statistical analysis for phenotypic study of this locus reveald an additive effect of the two alleles T,t by 81.33% with responsibility of 83.10% for the phenotypic variation found in this trait . Genetic (Molecular) analysis was done for comparative individuals and diabetic patients by sequencing the hTAS2R38(P49A) the PTC gene, among 127 individual : 59 healthy individual as a comparative group and 68 diabetic patients from both sexes and same age ranges. The results recorded a C/G allele in the position of the first SNP (145 C/G) which encode for Proline amino acid (C) or Alanine amino acid (G) : CC , CG refer to Tasters genotypes while GG refer to Non - tasters genotype. High frequency of C allele as compare to G among both healthy people and diabetic patients : 0.55, 0.53 for both respectively . Frequency of heterozygous genotype CG recorded a significant access as 0.76 among the comparative group which may implies a selective heterozygosity advantage among Iraqi population at this region. A significant differences in genotypic distributions was recorded between comparative and diabetic groups with high incidence of non tasters phenotypically tt 41% and genotypically GG 20.5 % among diabetic patients compare to healthy people : 25 % , 7% respectively . Interestingly non taster GG genotype had the lowest BMI among diabetic patients compare to othertwo taster genotypes CC, CG respectively. . Study of Genotype - Phenotype Association revealed significant correlation (p<0.0001) between them among comparative group as 86.9% and diabetic group as 48.8%. A comparative study of Biochemical analysis betweendiabetic and non diabetic individuals from different genotypes for TAS2R38 (P49A) gene showed significant elevated value of cholesterol among diabetic from the GG genotype 191.85 ± 6.57 mg/dl with non significant elevated values of Hb1c 8.93 ±1.77 and triglyceride 149.57±6.53 mg/dl. However, all these parameters were significantly more higher among diabetic than non diabetic . Significant differences(P<0.05) were recorded between diabetic and non diabetic according to their thyroid hormones levels with low values of T3 , T4 and high values of TSH among diabetic than non - diabetic. TSH hormone recorded its highest significant values among diabetic of CC genotype with 4.39 ± 0.16 μUI/ml as compare to the other two genotypes heterozygous CG and recessive homozygous GG . Although non significant , T4 recorded its lowest values among diabetic of the CC genotype .However, significantly (P <0.05 ),T3 hormone found to have lower values in the two homozygous genotypes; CC genotype for diabetic 0.54± 0.03 ng/ml and non diabetic 0.53±1.64 ng/ml ; GG genotype : 0.72± 0.04 ng/ml ; 1.82± 0.59 ng/ml for diabetic and non diabetic respectively . while individuals with CG genotype found to be non significantly different .Lastly it could be concluded that this trait may have some effect on BMI and may play a role the variation found among peoples in biochemical parameters (cholesterol, thyroid hormones ) changing's especially among diabetic patients. Ministry of High Education and Scientific Research Basrah University/ College of Education for Pure Science Department of Biology A Molecular Study of TAS2R38 (PTC Tasting Gene) Polymorphism Among Basrah Population and It's Association With Diabetes MellitusA Thesis submitted to the Council of the College of Education for Pure Science/ University of Basrah as a partial fulfillment of the requirements for the degree of Philosophy of Doctor of Science in Biology / Genetics By Hasna Amir Mohaus BSc. Biology / 1994MSc. Biology / 1998 Supervision by Assist.Prof.Dr. Prof.Dr.Faizah A.

دراسة بعض التغيرات الفسيولوجية والنسجية لسم الافعى ذات الحراشف المنشارية (افعى سيد دخيل Echis carinatus) في الجرذان المختبرية == A study of some physiological and histological effects of venom Saw Scaled Viper (Said Dakhil) Echis carinatus in laboratory rats

Author name: بيداء ريحان علي الموسوي
General topic: Biology
Specific topic: Zoology - Histology
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The present study was designed search of some physiological and histological effects of the venom of Echis carinatus sochureki (Said Dakhil snake) in male and female rats, and the role of antivenom (anti - venom) in the treatment of these effects. The while study was divided into two parts, the first part included the effect of [0.04 mg/kg (the second group) and 0.08 mg/kg (the third group)] of venom in rats. While, the second part related with the effect of [0.25ml/animal (the second group) and 0.5ml/animal (the third group)] antivenom in male and female rats treated with 0.04mg/kg and 0.08mg/kg of venom. After 24 hours of injection, blood samples collected for the hematological and biochemical parameters, and taking the right epididymis and epididymis left removed to examine the count and maliformations of sperm. Also, liver, kidney, testes and ovary were collected for sections. The results of the present study showed a significant decrease (P≤0.05) in RBC in the third group (0.08) mg / kg when compared with the first group (control) and second group (0.04) mg / kg. Also was there a significant decrease in HCT and MCV in the second and third groups compared with the first group, while there was a significant increase in the platelets of the third group compared with the first and second groups in in both sexes. The results indicated a significant decrease in RBC in the second and third groups compared with the first group, also a significant decrease in HCT in the second and third groups compared with the first group. The results showed a significant increase in the HCT in the second group compared with the third group. The results showed a significant decrease in the MCV in the third gr oup compared with first and second groups in female rats. The present study (P≤0.05) showed a significantdecrease in total WBC, lymphocytes and neutrophils in the second groups (0.04) mg / kg and the third (0.08) mg / kg, and a significant decrease in monocytes, acidiophils and basophils of the second and third groups compared with the first in the male rats. The results indicated a significant decrease in neutrophil in the second and third groups compared with the first group, and a significant decrease in lymphocytes, monocytes and acidiophils of the third group compared with the first and second groups in the female rats. The present study showed a significant increase (P≤0.05) in the level of glucose and urea in the third group (0.08) mg / kg compared with the first (control) and second (0.04) mg / kg groups. There was a significant increase in creatinine and albumin in the second and third groups compared with the first group, also a significant decrease in the total protein, cholesterol and HDL in the second and third groups compared with the first group.There was a significant decrease in the level of TG, LDL and VLDL in the third group compared with the first and second groups, The results showed a significant decrease in ALT and AST in the third group compared with the first and second groups, and a significant increase in the ALP in the third group compared with the first and second groups in the male. The hormonal study showed a significant decrease (P≤0.05) in the level of FSH, LH, testosterone and estrogen in the second and third groups compared with the first group in male and female rats. The present study a significant decrease (P≤0.05) in the count of sperms in the second and third groups compared with the first group, while, there was a significant increase in the maliformations of sperms in the third group compared with the first and second groups. The present study showed a significant decrease (P≤0.05) in the level of immune globulins (IgA - IgG - IgM) in the second and third groups compared with the first group in both sexes. The results of the effect of (0.5 - 0.25) ml / animal antivenom in male and female rats treated with (0.04) of snake venom showed a significant decrease in RBC and HCT in the second and third groups compared with the first groups,and there was a significant increase in the MCV in the second and third groups compared with the first group in male. The study results showed a significant increase in RBC, HCT and MCV in the second and third groups compared with the first group in the female rats.The current study showed a significant decrease (P≤0.05) in total WBC of the second group compared with the first and third groups, and a significant decrease in the lymphocytes and monocytes in the second and third groups compared with the first group, also the results showed a significant increase in total WBC in the second and third groups compared with the first in the male. Also, found a significant decrease in lymphocytes and monocytes in the secon d and third groups compared with the first, it was observed a significant rise in monocyte in the first group compared with the second and third groups. The results showed a significant increase in the percentage of granular white blood cells in the second and third groups compared with the first group in the female rats.Results of the present study indicated a significant decrease (P≤0.05) in the level of glucose, urea, albumin and total protein in the third group compared with the first and second groups, and there was a significant increase in the level of cholesterol HDL - VLDL in the third group compared with the first and second groups, also a significant decrease in TG in the second group compared with the first and third groups, The results showed a significant decrease in the level of HDL in the second and third groups compared and second groups with the firstgroup. the results showed a significant increase in the level of albumin and total protein in the third group compared with the first and second groups, and the results indicated a significant in increase cholesterol level, LDL and VLDL in the third group compare with the first and second groups, There was a significant decrease in the level of TG in second group compared with the first and third groups, and a significant decrease in the level of HDL in the second and the third groups compared with the first group in the female rats.The results indicated the effect of (0.5 - 0.25) ml / animal antivenom in male and female rats treated (0.08) mg / kg of snake venom, showed a significant decreased (P≤0.05) in RBC, HCT , MCV, lymphocyte and monocyte in the second and third groups compared with the first group, a significant decrease MCH in the second group compared with the first and third groups in male rats, showed a significant decrease in RBC HCT and MCV in the second and thirdgroups compared with the first group.The present study showed a significant decrease (P≤0.05) in the level ofglucose and urea, ALT and ALP in the third group compared with the first and second groups, also a significant decrease in the level of creatinine, LDL, VLDLand AST in the second and third groups compared with the first group, and asignificant increase in the level of albumin, total protein and HDL in the thirdgroup compared with the first and second groups. a significant increase in levelof cholesterol and TG in the second and third groups compared with the firstgroup in the male rats, While showed a significant decrease in level of glucose,urea and ALT in the third group compared with the first and second groups,there was a significant decrease in the level of creatinine, LDL, VLDL, AST and ALP in the second and third groups compared with the first group, a significant increase in albumin and total protein in the group third compared with the first and second groups, while a significant increase in level of cholesterol, TG and HDL in the second and third groups compared with the first group in female.The histological results showed changes in the liver of male and female rats treatment I n venom snake and constrictions consisted obtaining inflammation and blood congestion and enlarged nuclei of hepatic cells and degeneration in the cytoplasm and necrosis of liver cells, as well as, changes in the kidney tissue such as having a bleeding and hyperplasia and congestion blood and inflammation and analyze the entire glomerulus and necrosis of the cortical cells.The current study showed the incidence and clear changes in testicular tissue treatment venom snake of obtaining vascular congestion and analyze the interconnection fabric between the tubule and the decay of some nuclei and abnormalities tubule and testicular and shrinking and analyzes and the presence of multiple nuclei giant cells in the wall of tubule.The current study for histological changes in the ovary as sections showed the presence of large numbers of corpus luteum and the decrease numbers of ovarian follicles and the disappearance of the evolutionary stages of ovarian cysts.

تاثير PTU على بعض الجوانب النسيجية والفسلجية في الاجنة والاناث الحوامل Rattus norvegicus == Effect of PTU on some aspects of histological and physiological in fetus and pregnant rats(rattus norvegicus

Author name: انوار ناذر صيوان
Supervisor name: مها خليل الملاك | علاء عبد الخالق حسين
General topic: Biology
Specific topic: Zoology - Histology
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: Aim of study was to evaluated the effects of propylthiouracil (Ptu) drug on both maternal and fetus rats, used experimental animals (Rattus norvegicus) and after housing, breeding and adapting, (50) of virgin females choosen, isolated and then divided into two groups each group contain (25)rats, The mean weight of the animals was(200 ±50) gm and (8 - 10) week of age. Females on first group regarded as control and treated with distilled water while animals in second group were treated with (Ptu)dose as (0.05 %) and left for(14.5, 16.5, 18.5, 20.5, 21.5)for each group. Macroscopic observations on each group were recorded including changes in thyroid gland morphology, hypertrophy and enlargement at each period (14.5, 16.5, 18.5, 20.5, 21.5) days of gestation for both pregnant rats and embryos,the shape of uterine hornes,and uterus with changes of fetus number, resorption, atrophy, malformation of body parts, indifferentiation of fore and hind limbs, skin abnormalities were noticed. The changes in placenta which appeared irregular, pale colour, congested with white fibrous regions were noticed in hypothyroid rat comparing with placenta of control group animal, which looked red, discoid shape and normal surface without any abnormal signs, in addition fatty ovaries with large amount of adipose tissue was accumulated in abdomen cavity, the ovaries irregular and showed structures in most pregnant rats of hypothyroid group comparing with control pregnant females.Present showed significant decreased at (P≤0.05) in mean length, weight and number of fetus at (14.5, 16.5, 18.5, 20.5, 21.5) days of gestation in all embryos related to hypothyroid rats compared to control. Histological study with light microscopy on sections from thyroid gland related to rats with induced hypothyroid showed reduced, small follicles with empty or little colloid substance, each follicle lining simple cuboidal or flat epithelium, an increased with stroma, variable size of follicles most of them smaller compared to control thyroid gland from control rats, which showed normal lobules, large follicles filled with colloid, and poorly stroma.Sections from uterus, ovaries, oviduct related to hypothyroid rats showed variable histological changes ranged from mild to severe like abnormal reduced layers of uterus, irregular uteri folded, degenerated with simple epithelial tissue that lining the uterus villi, haemorrhage in uterine gland, deposition of collagenous fibers, infiltration of lymphocytes and accumulation of adipose tissue. Ovaries from hypothyroid rats showed variable changes with ovaries follicles maturation, accumulated of adipose tissue, decreased graffian follicles, infiltration of lymphocytes and deposition of collagenous fibres with degenerated of lining epithelial layer compared with control ovaries.Microscopic observations of placenta sections from hypothyroid rats at different period of gestation revealed loss tissue, reduced placental layers thickness, necrosis in the peripheral regions, degenerated cytotrophoblasts that surrounding capillaries, the trophoblast giant cells appeared with degenerative changes in labyrinth and spongiotrophoblasts regions. undifferentiated fetal blood capillaries compared to control which the sections have normal structure differentiated to decidual basalis and labyrinth zones, the junctional zone composed of outer giant cells that separated the decidua basalis and trophospongium.In this study the ultrastructural changes in thyroid gland from maternal and fetus related to hypothyroid rat at (14.5, 16.5, 18.5, 20.5, 21.5) days of gestation were identified by electron microscopy and included changes in apical cytoplasm of follicular cells to microvilli, blebs and protrusions also dilated rough endoplasmic reticulum, increased lysosomes, the empty vacuoles more than the dense vesicles, increased mitochondria and Golgi apparatus cisternae, changes chromatin and more cellular debris. Biochemical results in thyroid hormones revealed to significant increase in mean concentration of (TSH) in pregnant females with hypothyroidism during gestation periods in compared with control group, also there was an decrease in both (T3, T4) non significant, significant increased concentration in serum of pregnant rats on treated group with (Ptu) compared with their concentration of control pregnant rats.Levels of some oxidative enzymes (GSH & MDA) was estimated in this study and there was significant increased,non significant in their concentrations in serums of rats with induced hypothyroidism comparid to control group during each period of gestation (14.5, 16.5, 18.5, 20.5, 21.5) day. The study determined some of haematological parameters such as (R.B.Cs) count, (H.b) level and (P.C.V) ratio which showed non significant at (P≤0.05) hypothyroidism rats compared with control rats at the same period of gestation. Also the results revealed non significant with (T.L.C), (D.L.C) in all pregnant rats with hypothyroidism compared to control rats, the data showed an increased with lymphocytes and Neutrophils and Esoinphils cells in smears prepared from hypothyroidism rats compared to control group

عزل وتشخيص احد قلويدات الايض الثانوي لبعض الطحالب ودراسة فعاليته الحيوية == Isolation and identification one alkaloid of secondary metabolites from some algae and study of biological activity

Author name: انفال نوري عباس اللفتة
Supervisor name: احمد محسن عذبي | اقبال جاسم الاسدي
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The current study includes an isolation, Identification and purification of three species of algae, two of them belonging to cyanobacteria they are Oscillatoria brevis and Nostoc carneum . The third one was Enteromorpha intestinalis which belong to green algae which was from different location in Basrah .There are two extract were prepared from the algal species Alcohol , and alkaloid extracts , Alcoholic extract prepared to know what was compound it had and alkaloid extracts to test bioactivity of algae Cytotoxcity also was carried out on human red blood cells, the results revealed that alkaloid extract from E.intestinalis was nontoxic, whereas bioactive compounds isolated from O.brevis , N.carneum. Showed hemolytic action .The bioactivity of alkaloid extract was examined to elucidate their on ability to inhibit the growth of gram Positive and negative bacteria. .Biological activity of alkaloid extracts of three algae isolated were determined by using the Minimal Inhibitory Concentration (MIC) againsttwo bacterial isolates. And also test the effect of filtrate pure algal culture on growth of plant pathogenic fungi ,also apparently that the algal alkaloid extract and isolated compounds exhibits antioxidant.The antitumor activity of the algal alkaloid extract from E.intestinalis against Rhabdo myosarcoma cell line was examined. The results showed that crude alkaloid extract possessed an antitumor bioactivity at low concentration 0.78mg / ml .In this study also was carried out to investigate the possibility of preventing the hypercholesterolemia by using alkaloid extract of E.intestinalis .it also aimed to study the effect of use this extract in reducing the Plasma Total Cholesterol (TC) , Triglyceride (TG), Low - Density Lipoprotein (LDL) , Very Low - Density Lipoprotein (VLDL) and no effect on High - Density Lipoprotein (HDL).The identification of the compound was made depending on the active groups test and spectroscopic analyses including : Infrared (IR) and Gas Chromatography / Mass spectrum (GC - MS). The results of such analyses showed that alkaloid extract from E.intestinalisa has three compound these are Hexadecanamide , Methenamine and Benzenedicarboxylic acid, diisooctyl est and alkaloid extract from N.carneum showed that has three compound 1,2 - Benzenedicarboxylic acid diisooctyles,ا9 - Octadecenamide, (Z) - )ااااا and Didecyl phthalate .Hexadecanamide purification from alkaloid extract of E.intestinalis depended on physical and chemical properties The identification of the compound was made depending on the active groups test and spectroscopic analyses including : Infrared (IR); Gas Chromatography / Mass spectrum (GC - MS) and this component showed bioactivity on gram. Positive and negative bacteria and it has also antioxidant activity

استخدام عوامل استحثاث لانتاج مؤيضات ثانوية من بعض عزلات انواع الفطر واختبار فعاليتها الضد بكتيرية والخلايا السرطانية Penicillium والكولسترول == Use of inducing agents in secondary metabolites production from some Penicillium isolates and assay their activity against bacteria , cancer cells and cholesterol

Author name: امل صالح عبد الرضا
Supervisor name: توفيق محمد محسن
General topic: Biology
Specific topic: Microbiology - Fungi
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The current study was designed to investigate active compounds from different Penicillium isolates ,that isolated from different sources , using different media . Eleven isolates related to five species : P. chrysogenum, P.paxilli , P. citrinum, P. cosmopolitanum, P. digitatum were isolated. After primary screening was performed , the best isolates that have high antibacterial activity against gram positive and gram negative bacterial was selected. The selected isolates were cultured on fermentation media according to the suitable media for each isolate, and the active compounds were extracted using ethyl acetate as a solvent. P. cosmopolitanum and P. chrysogenum were cultured on penicillin production medium (PPM) , P. paxilli was cultured on Aspergillus complete medium (ACM) and P. digitatum and P. citrinum were cultured on solid state fermentation media consist of wheat bran . The efficiency of fungal crude extracts from each isolate against the reference strains S. aureus NCTC 6571 and E. coli ATCC 25922 and against Candida albicans (pathogenic and reference strain)was examined, and the Minimum inhibitory concentration (MIC) was determinated for each extracts.The inhibition zone of fungal extracts against E. coli and S. aureus ranged between (20 - 50) mm , and they had high activity against C. albicans ( reference and pathogenic isolate) ranged between 25 - 45 mm.Induction of secondary metabolite production by the selected fungi was carried out using biological factor (Streptomyces sp.) , chemical agent (colchicine) and physical agent by UV radiation. Apparently that the biological induction by Streptomyces isolate was the best compared with the other treatments.The results revealed that the two fungal extracts ALO1 and Apax exhibit a high antioxidant activity at low concentrations and volumes of the extract compared to ascorbic acid as control. ALO1 had radical scavenging activity (RSA%) reach 99.9% at volume 3μl , and Apax had RSA 91.6% at concentration 500μg/ml. Also, the fungal extract ,ALO1, showed a significant activity as anticancer agent against RD - cell line. The IC50 of ALO1 was 8.5μl after 24h and 23.76μl after 72h. The hypercholesterolemia ability of ALO1 in vivo and in vitro was assayed . In vivo experiment designed using female albino mice and divided into three groups each one contain 8 mice : group 1 treated with 10μl , group 2 treated with 20μl of ALO1 , and group 3 treated with normal saline as control group. The results showed that total cholesterol , triglycerides, LDL and VLDL were significantly reduced when compared with control group while the HDL level was increased in comparing with control group. The chemical analysis of the crude extracts showed that Apen2 contained 259 μg/g of penicillin G when analyzed with HPLC apparatus . Also the GC mass analysis of ALO1 showed that Docasadionic acid initialize area76.18% and Palmitic acid initialize area 15.09% from the total identified compounds.Whereas the GC mass analysis of Apax showed that Hexandioic acid initialize area40% and Stearolic acid initialize area 35.57% from the total identified compounds.In addition , it was detected the presence of penicillin biosynthetic gene cluster : pcbAB, pcbC and penDE in P. cosmopolitanum and P. chrysogenum.The result showed that gene pcbC and penDE were found in the genomic DNA but the gene pcbAB was not amplified by PCR.

دراسة تصنيفية وبيئية لحشرات نصفية الاجنحة المائية وشبة المائية Heteroptera : Hemiptera في محافظة البصرة == Taxonomical And Ecological Study of Aquatic And Semiaquatic Insects(Heteroptera : Hemiptera) In Basrah Provience

Author name: اسماء عبد الزهرة سبع العيداني
Supervisor name: ضياء خليف كريم
General topic: Biology
Specific topic: Life Science
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: Present studies dealing with the taxonomical and ecological studies of the aquatic Hemiptera : Heteroptera in eight stations in Basrah provience ,which are : Al - Medina , Al - Qurna , Basrah center ,Shat Al - Arab , Al - Zubair , Abu Al - Khasib , Al - Faw and Sullein Marsh, collection was done twise monthly during the period from April 2012 to March 2013 .Results showed the presence of nine species belonging to aquatic Hemiptera , three belonging the group Gerromorpha and six the group Nepomorpha,as follows : Group : Gerromorpha(Popov,1971)Family : Gerridae ( Leach , 1815)1 - Aquarius nebularis(Schellenberg,1800)Family : Mesoveliidae(Douglast and Scott , 1867 )2 - Mesovelia vettigera( Horvath , 1895 ) ( apterous )M .vettigera( Horvath , 1895 ) ( macropterous )Family : Macroveliidae3 - Macrovelia hornii(Uhler , 1872 )Grouop : Nepomorpha(Popov,1968)Family : Nepidae ( Latreille , 1802 )4 - Nepa cinerea( Linnaeus , 1758 )Family : Corixidae ( Leach,1815 )Subfamily : Cymatianiae ( Walton , 1940 )5 - Cymatia bonsdorffii(Sahlberg , 1819 )Subfamily : Corixinae ( Leach , 1815 )6 - Sigara(Vermicorixa) latelaris ( Leach , 1815 )Family : Belostomatidae ( Leach , 1815 )7 - Lethocerus fakir(Mayr , 1852)Family : Notonectidae ( Latreille , 1802 )8 - Anisops sardeus(Herrich - Schaeffer , 1849)AbstractBFamily : Pleidae ( Fieber , 1851 )9 - Plea leachi(McGregor and Kirdaldy,1899)Among the collected species ,six were regarded as new records to the Iraqi fauna of this order,they were : A. nebularis,M. vettigera( macrpterous) , M . vettigera( apterous), Ma.hornii , N.cinerea , C.bonsdorffii andP.leachi.Study also deal with the measuring of some ecological aspects like air and water temperatures , salinity , pH and dissolved oxygen ,and their effected on the monthly distribution of the aquatic Hemiptera. Temperature was the most effective aspect in the monthly distribution of the insects ,as the lowest numbers were recorded in Summer months and the highest number were in Winter months , the ranges of the air temperatures were 9 - 43º C and water temperatures were 2 - 33º C .The highest concentrations of salinity was recorded in Al - Zubair , Abu Al - Khasib and Al - Faw reached to 35g/l in Al - Zubair in July , the pH ranges were the same in all stations and was alkalid , their ranges were 7.3 - 7.8 , about the dissolved oxygen it was low and same in all stations except in Sullein Marsh which reached to 11 mg/l in January .The concentration of some heavy metals in water also studied like Fe, Pb, Cu and Zn , the highest concentrations were to Fe and Zn in Basrah center and Al - Zubair, and the highest concentration for Fe in Al - Zubair reached to 6362.21μ/L in August, while highest concentration for Zn in Basrah center reached to 1365.92μ/L in July, while in the other stations the concentrations were lowest .The study also used the water boatmen Sigara latelaris(Leach,1817) as bioindicators of heavy metals pollution in the water of Basrah provience , and taken Sullein marsh as control , and measuring the concentrations of the heavy metals in insects tissues , water and sediments , the results showed that the insects collected from the water of the center of the city can accumulate Fe andAbstractCZn in their tissues and the highest concentrations reached to 3562.16 and 3778.12 μ /gm for Fe and Zn in July , while in the insects taken from Sullein marsh were 286.25 and 285.17 μ /gm .The concentrations of heavy metals in water and sediments of the city center were measured and the highest concentration was for Fe and Zn , and reached to 1569.91 and 1365.91 μ /L of the water of city center , while reached to 215.01 and 223.14 from the same metals in the water of Sullein marsh , the concentrations of the same metals were recorded in sediments of the city center and reached to 2865.16 and 1982.56 μ /gm for Fe and Zn , and the highest concentrations of the same metals in Sullein marsh were 418.57 and 393.74 μ /gm .

دراسة تاثيرالسمية النباتية والوراثية لتراكيز مختلفة من الاوكسينات ومضادات التلوث في استحثاث الكالس الاولي لنخيل صنف الحلاوي. (Phoenix dactylifera L.) التم == Assessment of Phytotoxicity and Genotoxicity of different Auxins concentrations and decontamination agents on initiation of date palm (Phoenix dactylifera L.) primary callus of Hillawii cv.

Author name: اسراء عبد الرزاق حميد السامر
Supervisor name: صبيح داود محمد العطبي | محمد حمزة عباس
General topic: Biology
Specific topic: Plant - Tissue
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: The present study was conducted to evaluate the effect of different concentrations of the growth regulators 2, 4 - D; Dicamba and NAA on the induction of date palm (Phoenix dactylifera L.) primary callus Hillawii cv., by analyzing morphological, biochemical; anatomical and molecular responses. Three concentration of 2, 4 - D (10; 50 and 100 mg/L), Dicamba (1; 5 and 10 mg/L) and 30 mg/L of NAA were examined during the course of this study. in addition, several antimicrobial agents were selected to evaluate their morphological and biochemical impacts on the primary callus of date palm including the antibiotics (Gentamycin 50 mg/L and Chloramphenicol 50 and 100 mg/L), as well as, the fungicides (Switch 1 g/L and Beltanol 1 ml/L), After induction of the primary callus from each treatments, the following results were obtained : 1. The results showed that the treatments with 2, 4 - D at 10 mg/L and Dicamba at 1 and 5 mg/L did not stimulate any callus growth over the time of incubation on MS medium.2. It was evident that the treatments of different growth regulators have a significant effect on the initial period (day) for callus initiation, the shortest period have been obtained with the low concentration of 2, 4 - D (50 mg/L) and Dicamba (10 mg/L) which were 67.57 and 66.75 days, respectively, while the high concentration of 2, 4 - D (100 mg/L) led to increase this period significantly up to 120 days.3. Both fresh and dry weight of date palm primary callus decreased significantly at the treatment of high concentration of 2, 4 - D (100 mg/L) up to two folds compared to the treatment at low concentration of 2, 4 - D (50 mg/L), similar trend of results were found with browning percentage and intensity.4. Biochemical analysis of produced date palm primary callus revealed that the high concentration of 2, 4 - D (100 mg/L) led to a significant increase in the total content of carbohydrates; Proline, Peroxidase activity and Phenolic compounds which considered as a stress indicators, and another decrease of total soluble proteins and free amino acids was accompanied with this treatment compared to the same growth regulator at low concentration and Dicamba treatments.5. Anatomical study revealed that asignificant damage was caused by the high concentration of 2, 4 - D (100 mg/L) on date palm primary callus, this damage was evident from the abundant and distribution of tannins compounds across the primary callus tissues, thus, was accompanied with high percent of browning, compared with the treatments of 2, 4 - D at low concentration, Dicamba and NAA.6. The analysis of Protein profile revealed the similarity between the patterns of control treatment (juvenile leaf of Hillawii cv.) and 2, 4 - D at low concentration, as well as, Dicamba. Similarity indices results for protein profile of date palm primary callus proved the genetic similarity of 100% between control treatment and both 2, 4 - D (50 mg/L) and Dicamba ones, while, the lowest similarity percentage was observed with high concentration of 2, 4 - D (100 mg/L).7. The results of RAPD marker analysis of the extracted genomic DNA form date palm primary callus using four deca oligonucleotide primers showed the efficiency of three primers (OPAR3; OPAR8 and P.650) in their amplification of examined DNA,. RAPD profile revealed an identical matching between control treatment and 2, 4 - D at low concentration, followed by Dicamba and NAA auxins, while, the increasing in 2, 4 - D concentration up to 100 mg/L led to disappearance and the appearance of new DNA bands compared to control treatment, with a highest genetic distance among other treatments.Similarity coefficient analysis showed that the highest genetic similarities were found between control treatment and 2, 4 - D (50 mg/L) with similarity index of 96% , followed by Dicamba and NAA treatments with indices of 74 and 66%, respectively, the lowest similarity index was obtained between control and 2, 4 - D at high concentration which was 27%.8. The screening results of antimicrobial agents showed that the treatment with Switch fungicide (1 g/L) and Gentamycin antibiotic ( 50 mg/L) did not stimulate any callus growth over the time of incubation on MS medium supplemented with either 2, 4 - D or Dicamba.9. Beltanol fungicides (1 ml/L) treatment had a negative effect on the initiated primary callus either by 2, 4 - D or Dicamba, its treatment led to a high significant reduction in total solubleprotein and free amino acid content compared to control results, while an increase of total carbohydrates, Phenolic compounds, Proline and Peroxidase activity was detected with Beltanol fungicide.10. The Chloramphenicol treatment at low concentration (50 mg/L) showed positive results on the growth of primary callus at 2, 4 - D or Dicamba auxins according to morphological and biochemical analysis.

التحلل والمعالجة الاحيائية للمركبات الهيدروكاربونية النفطية بوساطة سلالات Streptomyces وNocardiopsis المعزولة من الترب الملوثة بالنفط في محافظة البصرة - العراق == Biodegradation and bioremediation of petroleum hydrocarbons by Streptomyces and Nocardiopsis strains isolated from oil contaminated soil of Basrah Governorate - Iraq

Author name: احمد عبد برغال الاسدي
Supervisor name: كوثر هواز مهدي | نادية عبد الامير المظفر
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: Arabic
University location: Basrah
First pages:
Abstract: سبعة سلالات من البكتريا الخيطية تعود الى جنسي Streptomyces وNocardiopsis عزلت من ترب شركة مصافي الجنوب الملوثة بالنفط الخام في البصرة جنوب العراق، وقد تم اختبار قدرتها على النمو بوجود النفط الخام باستعمال وسط ملحي سائل مزود بالنفط الخام كمصدر وحيد للكربون. شملت السلالات على S. variabilis 7525 وS. variabilis SW75 وS. cellulosae XFB - T وS. parvus S86 وS. bacillaris S4BW2 وS. flavoviridis VITHM - 1 وN. synnemataformans ITD - 3 بنسبة تشابه من 99٪ الى 100٪. في هذه الدراسة تم العثور على سلالات جديدة من البكتريا الخيطية المعزولة من التربة الملوثة شخصت باستعمال تحديد تتابعات جين الحامض النووي الريبوزي 16S rRNA وقد اظهرت السلالات قدرات مختلفة على تحلل النفط الخام في الوسط الملحي السائل من 50.2٪ الى 72.4٪. كما تم تقييم تاثير الظروف الزرعية من درجة الحرارة والدالة الحامضية وتركيز النفط الخام والعناصر النزرة في نمو سلالات البكتريا الخيطية وتحلل النفط الخام، وقد لوحظ ان اعلى نمو للخلايا واعلى تحلل للنفط الخام كان 80٪ في ظروف زراعة مثالية ( درجة حرارة 30 ᵒم ودالة حامضية 7 بعد 10 ايام من الحضن وزادت هذه النسبة الى 85٪ من قبل السلالة S. cellulosae XFB - T بعد اضافة العناصر النزرة.في حين اظهرت نتائج اختبار التحلل الحيوي للنفط الخام في التربة من قبل سلالات البكتريا الخيطية منفردة بعد 60 يوما من الحضن تحت ظروف مختلفة ، اظهرت ان اعلى قيمة للتحلل كانت 87 ٪ من قبل النوع S. bacillaris عند درجة حرارة 30 ᵒم وحجم لقاح مضاف 10مل/ 25غم تربة ومستوى رطوبة 40٪.المعالجة الاحيائية هي ستراتيجية فعالة لتنظيف المواقع الملوثة بالهيدروكربونات. ونتيجة تاثر الكائنات الحية الدقيقة من تلك التربة يحدث لها اضطراب وبالتالي يتم انتقاء الاحياء المجهرية القادرة على استهلاك الهيدروكربونات لاستخدامها في هذه التقنية الفعالة في التعامل مع الملوثات الهيدروكربونية. الهيدروكربونات التي تتفاعل مع نسجة التربة والكائنات الحية الدقيقة هي التي تحدد مصير الملوثات وطبيعتها الكيميائية والقدرات الهادمة للميكروبات. الاثار المحتملة لنشارة الخشب، وخليط من روث الابقار والغنم وتعديل المكملات الغذائية لتحفيز الكائنات الدقيقة الاصلية وزيادة المعالجة البيولوجية للهيدروكربونات، هذه العملية تم اجراءها باستعمال طريقة المعالجة خارج الموقع بطريقتي الكومة والمفاعل الحيوي، بخلط التربة الملوثة مع نشارة الخشب والروث الحيواني ودعم التربة بالمغذيات والعناصر النزره مع توفير الرطوبة الملائمة والظروف المواتية لنمو الكائنات الحية الدقيقة كما قدمت التهوية الصناعية للتربة في الكومة والمفاعل بوساطة شبكة من الانابيب المثقبة لمحاكاة المعالجة الحيوية التي استمرت مدة 90 يوما.خلال تلك الفترة، رصدت الهيدروكربونات النفطية الكلية (TPHs) وازالة الالكانات الاعتيادية والتغيرات في المجتمعات البكتيرية. وقد اظهرت النتائج ان (TPHs) قد انخفضت من 52غم/كغم الى 10.6 غم / كغم بمعدل تحلل بلغ 79.6٪ ومعدل تحفيز كان 71.4٪ في تجربة الكومة ومن 52غم/كغم الى 13.5 غم / كغم بمعدل تحلل بلغ 74٪ ومعدل تحفيز كان 63.5٪ في تجربة المفاعل الحيوي. وخلال مدة 45 يوما من الاختبار بلغت اعداد الكائنات الحية الدقيقة من البكتيريا المضافة والمستوطنة التي تحلل المواد الهيدروكربونية اعلى مستوى لها 2 × 710 خلية/ غم و1.1 × 710 خلية/ غم في الكومة والمفاعل الحيوي على التوالي.بناء على هذه المعطيات، نستنتج ان المعالجة الحيوية خارج الموقع افضل ستراتيجيه غير مكلفة وفعالة وصديقة للبيئة وبالتالي قد توفر خيارا قابلا للتطبيق لمعالجة التربة من الملوثات الهيدروكربونات النفطية. | Seven actinomycetes strains from genera Streptomyces and Nocardiopsis isolated from hydrocarbon contaminated soil in Basra Governorate, Iraq were selected for their capacity to grow in the presence of crude oil. Their growth rates and biodegradation ability were investigated in mineral salt media supplemented with light Remella crude oil. These strains consist of Streptomyces variabilis 7525, Streptomyces variabilis 5W75, Streptomyces cellulosae XFB - T, Streptomyces parvus S86, Streptomyces bacillaris S4BW2, Streptomyces flavoviridis VITHM - 1 and Nocardiopsis synnemataformans ITD - 3, that the sequence identity range from 99% to 100%. Our study find a new actinomycetes strains isolated from contaminated soil. these strains appears different capacity on the degradation of crude oil in mineral salt media , the highest was found to vary from 50.2% to 72.4%.The effect of the cultivation factors (temperature, pH, and concentration of crude oil and trace elements ) on growth of the actinomycetes strains and crude oil degradation was evaluated. The highest cell growth and the amount of crude oil degraded 80% were observed in optimized cultivation conditions (30oC and initial pH 7) after 10 days, this ratio reached to 85% by addition of trace elements solution at same condition by S. cellulosae XFB - T.The biodegradation test lasted 60 days in soil by actinomycetes strains at different factors shown the highest of the crude oil was removed in experiment that inoculums with 10ml of each bacterial strain, value 87% by Streptomyces bacillaris S4BW2 at 30oC. Bioremediation is an efficient strategy for cleaning up sites contaminated by hydrocarbons. Microorganism of soil is affected by hydrocarbon disturbance thus selective enrichment of hydrocarbon utilizers occurs. The technology is very effective in dealing with petroleum hydrocarbon contamination. Hydrocarbons react with the soil matrix and microorganisms determining the fate of the contaminants relative to their chemical nature and microbial degradative capabilities. The potential effects of sawdust, and mixture of cow and sheep dung as amendment nutrient supplements to biostimulate autochthonous microflora and augmentation for hydrocarbon bioremediation were investigated in test biopile and bioreactor. The soil was ground and fluffed by admixture of 1.5% sawdust, then supplemented with the necessary minerals and watered to provide conditions favoring microorganism growth industrial aeration was provided in pile by system of a abundant perforated drainage - pip network to simulate bioremediation treatments through a 90 - day period. During this period, we monitored total petroleum hydrocarbons (TPHs) and n - alkanes degradation and changes in bacterial communities. The (TPHs) had been reduced from 52 to 10.6 g/kg (79.6 %), the rate of Biostimulants Efficiency (BE) was (71.4%) in biopile and from 52 to 13.5 g/kg (63.5 %) in bioreactor . In soil, the dominant microorganism population comprised Gram - positive bacteria from actinomycete group and autochthonous microorganisms which decompose hydrocarbons reached highest level 2 x 107 and to 1.1 x 107 CFU/g at 45 days in biopile and bioreactor respectively . Based on these data, the study conclude that is ex situ ( Biopile and bioreactor ) experiment the best strategy, inexpensive, efficient, and environmentally friendly and may thus offer a viable choice for petroleum hydrocarbons - contaminated soil remediation.

دراسة تشريحية ونسجية وكيمونسجية مقارنة للغدة الدرقية وجار الدرقية في نوعين من الفقريات العراقية (بيز ابن عرس، Herpestes javanecus والقنفذ طويل الاذن ، Hemiechinus auritus) باستعمال الواسم Anti - Calcitonin, code 140778) ) == Study of Thyroid and Parathyroid Gland in Two Iraqi Vertebrates ( Weasl , Herpestes javanicus and Long - Eared Hedgehog , Hemiechinus auritus) Using Marker (Anti - Calcitonin, code 140778)

Author name: رنا علاء عبد الحميد هايس العامري
Supervisor name: حسين عبد المنعم داود
General topic: Biology
Specific topic: Zoology - Anatomy
Degree: Doctorate
Language: Arabic
University location: Baghdad
First pages:
Abstract: هدفت الدراسة الحالية التعرف على الوصف التشريحي والتركيب النسجي والكيمو نسجي - المناعي للغدتين الدرقية وجار الدرقية لنوعين من اللبائن العراقية ممثلة ب بيز ابن عرس ( ( Herpestes javanicus والقنفذ طويل الاذن ( Hemiechinus auritus ) وقد استعملت تقنيات مختلفة لانجاز الدراسة .• الغدة الدرقية Thyroid Glandاظهر الفحص التشريحي للغدة الدرقية في حيوان بيز ابن عرس (H. javanicus) البالغ (ذكور, اناث) ان الغدة تتكون من فصين (ايمن, ايسر) وتاخذ موقعا في منطقة العنق اسفل الحنجرة. ويتموضع فصا الغدة على جانبي الرغامى عند الحلقات (5 - 1) من حلقات الرغامى ولم يلاحظ وجود تركيب البرزخ (Isthmus) الذي يربط بين فصا الغدة , ويتباين لون الغدة بين البني والاحمر وفي الغالب تظهر بلون بني محمر(Reddish brown) يظهر فصي الغدة في شكل بيضوي او اهليجي, اظهرت نتائج الدراسة الحالية في حيوان القنفذ ( H. auritu ) تماثلا واضحا مع حيوان بيز ابن عرس فيما يخص الوصف التشريحي باستثناء كون فصا الغدة بيضويتي الشكل.تحاط الغدة في حيوان بيز ابن عرس بمحفظة من نسيج ضام (Connective tissue) تتكون من طبقتين, طبقة خارجية External layer)) تتالف من الياف مغراوية (Collagenous fibers) وقليل من الياف مرنة ((Elastic fibers ويتخللها ارومات ليفية Fibroblast)), وطبقة داخلية ((Internal layer تتالف من الياف مغراوية يتخللها الياف عضلية ملساء Smooth muscle fibers) ) ,كما تتضمن المحفظة اوعية دموية ((Blood vessels واعصاب (Nerves), تمتد من المحفظة الداخلية حويجزات رقيقة تقسم الغدة الى فصيصات غير مكتملة . اظهرت المحفظة في حيوان القنفذ تماثلا مع المحفظة في حيوان بيز ابن عرس.يتكون نسيج الغدة الدرقية في حيوان بيز ابن عرس بصورة رئيسية من الجريبات (Follicles) والخلايا الجنيب جريبية (Parafollicular cells) واوعية دموية واعصاب. تتخذ الجريبات اشكالا متعددة منها بيضوي (Oval), ومنها دائري ((Rounded, واحيانا تظهر بشكل غير منتظم (Irregular shape), وتكون الجريبات باحجام مختلفة صغيرة, متوسطة وكبيرة . اظهر القنفذ تماثلا مع حيوان بيز ابن عرس فيما يخص حجم وشكل الجريبات. تبطن الجريبات في بيز بن عرس اما بنسيج ظهاري مكعبي واطئ بسيط ( Low simple cuboidal epithelial tissue) او نسيج ظهاري مكعبي بسيط (Simple cuboidal epithelial tissue) , بينما في حيوان القنفذ يظهر نسيج ظهاري عمودي بسيط (Simple columnar epithelial tissue) فضلا عن النسيج الظهاري المكعبي الواطئ البسيط والظهاري المكعبي البسيط . تحتوي تجاويف الجريبات على مادة جيلاتينية هي الغروان Colloid)) , وتظهر الجريبات تباينا في كمية الغروان اذ ان بعض الجريبات تكون مملؤة بالغروان والبعض الاخر يحتوي على كمية قليلة والقليل منها يظهر خاليا تماما من الغروان في كلا الحيوانين موضوع الدراسة, تنتشر في نسيج الغدة خلايا تدعى بالخلايا الجنيب جريبية (Parafollicular cells) او تسمى خلايا الكالسيتونين (Calcitonin cells) او (C - cells), وتظهر هذه الخلايا باشكال متباينة يتراوح بين الدائرية (Rounded) الى مضلعة الشكل ( (Polygonal shape, وهي تظهر اما بشكل مفرد (Single) او بشكل تجمعات (Clusters) في نسيج الغدة, وتحتل هذه الخلايا موقعين اساسيين في نسيج الغدة , الاول داخل جريبي Intrafollicular position) ) وتكون بين الغشاء القاعدي والخلايا الظهارية الجريبية والثاني بين جريبي Interfollicular position)) وتكون بين جريبات الغدة الدرقية , وتكون قليلة العدد ولم تظهر اختلافا في حيوان بيز ابن عرس عن القنفذ .اظهر التفاعل الكيمونسجي المناعي في حيوان بيز ابن عرس والقنفذ استجابة واضحة للتفاعل المناعي مع الاجسام المضادة للكالسيتونين, وظهرت الخلايا متقبلة للون البني وهو دليل التفاعل المناعي .• الغدة جار الدرقية Parathyroid Gland توجد الغدة جار الدرقية بتماس مع الغدة الدرقية وتحاط بمحفظة من نسيج ضام وهي امتداد لمحفظة الغدة الدرقية والتي تتكون من الياف مغراوية والياف مرنة ((Elastic fibers والياف عضلية ملساء واوعية دموية واعصاب . توجد الغدة جار الدرقية في موقعين طرفي قمي وطرفي جانبي. تمتد من محفظة الغدة جار الدرقية حويجزات الى داخل الغدة لتفصلها الى فصيصات غير كاملة، وتنتشر داخل نسيج الغدة. اما في القنفذ ( H.auritus ) فانها تقع ضمن نسيج الغدة الدرقية وتظهر بشكل فصوص (4 - 2) فصوص دائرية او بيضوية الشكل محاطة بمحفظة رقيقة تفصلها عن جريبات الغدة الدرقية.تم تمييز ثلاثة انواع من الخلايا في نسيج الغدة جار الدرقية في حيوان بيز ابن عرس اذ تمثلت الخلايا الاكثر انتشارا بالخلايا الرئيسة ((Chief cells، والخلايا الحمضة (Oxyphil cells) وخلايا الماء الشفافة ( (Water - clear cellsوهي تماثل الخلايا في نسيج القنفذ وتترتب بشكل حبال خلوية ضمن نسيج الغدة.اظهرت الغدة جار الدرقية في بيز ابن عرس استجابة للتفاعل الكيمو نسجي المناعي, اذ ظهرت خلايا الغدة متقبلة للون البني دليل التفاعل المناعي اذ تظهر الاستجابة المناعية للخلايا على مستوى السايتوبلازم والغشاء البلازمي في الخلايا الرئيسة ( (Chief cells, واظهرت الاستجابة المناعية في الغدة للقنفذ اختلافا بالنسبة لشدة استجابة الخلايا حيث كانت اقل من حيوان بيز ابن عرس .اوضحت نتائج الدراسة الحالية الخاصة بتحليل الاحماض الامينية في مستخلص الغدة الدرقية وجار الدرقية في حيوان بيز ابن عرس (H.javanicus ) (ذكور، اناث), تشخيص (13) حامضا امينيا في الذكور و(11) حامضا امينيا في الاناث, اما في حيوان القنفذ H.auritus (الذكور، الاناث), فقد تم تشخيص (12) حامضا امينيا في كل من الذكور والاناث. | Anatomical examination of thyroid gland in adult (males &females) H. javanicus revealed that the gland consist of two lobes (right & left), situated below the layrnx in neck region. The two lobes located at the sides of trachea (1 - 5) rings of trachea. they appear without Isthemus. The colour of the gland is reddish brown. The shape of the lobes either to be oval or elliptical. On the other hand the thyroid gland in H. auritus showed a clear similarity with that of H. javanicus with the exception of the oval shape of the gland. Thyroid gland of H. javanicus surrounded by capsule of connective tissue consist of external layer of collagenous and elastic fibers, fibroblast and internal layer consist of collagenous fibers with smooth muscle fibers, the capsule also contain blood vessels and nerves. Thin trabeculae extend from the capsule divided the gland into incomplete lobules. The capsule of thyroid gland in H. auritus showed clear similarity with that of H. javanicus with the exception of the adipose tissue between the capsule and gland tissue in H. auritus.Histologically thyroid gland in H. javanicus consists of follicles, parafollicular cells, blood vessels and nerve. The follicles appear in different shapes (oval, rounded and irregular shapes, and have different size (small, medium and large). The thyroid gland tissue in H. auritus has the same appearance of that in H. javanicus. The follicules in H. javanicus lined by epithelial tissue either to be Lwo simple cuboidal or simple cuboidal epithelium. In H. auritus lind by Lwo simple cuboidal, simple cuboidal or even simple columnar epithelial tissue. The follicular cavities contain different quantities of colloid, and few of them lack of collid in both under investigated animals. Parafollicular cells are spreading in gland tissue; they also called calcitonin cella or c - cells. These cells have different shapes either to be rounded or polygonal shape, and found as single or clusters. They are either to be interfollicular or intrafollicular position. The immunohistochemistry reaction revealed clear positive reaction for calcitonin , and the appearance of brown colour represented evidence for the immune reaction .• Parathyroid glandResults of the present study revealed that parathyroid gland situated closely with thyroid gland in both animals under investigatin . The gland surrounded by a capsule of connective tissue represented as an extension from the capsule , which consist of collagenous fiber, elastic fibers, smooth muscles fibers and blood vessels and nerves. The parathyroid gland situated at two position (lateral terminal / apical terminal) the trabeculae wich exted from the gland capsule to the gland tissue separated the gland into incomplete. In H. auritus the parathyroid gland formed from (2 - 4) lobes with rounded or oval shapes and surrounded by thin capsule separated from the thyroid gland follicles.Three types of cells have been differentiated in the parathyroid tissue in H. javanicus represented by chief cells wich apper the most abundant in comparison with the other two types, the second type are the oxyphil cells and the third are water - clear cells, they are similar in both animals and appear as a cellular cords within the gland tissue. The immunohistochemical study in parathyroid gland of H. javanicus reveald positive reaction for calcitoninin, where ̛s the cells appear ̛s in brown color giving the evidence for the immune reaction in cytoplasm and plasma membrane of the chief cells In H. auritus there was clear immune reaction but less than H. javanicus . Result of the present study related with the amino acid analysis of the thyroid and parathyroid glands extraction in H. javanicus (mals &females) declear (13) amino acid in males and (11) in female while in H. auritus (male &females) there were (12) amino acid in both male and females.

دراسة تصنيفية لبعض اجناس العويئلة الفراشية Papilionoideae في العراق == Comparative Taxonomic study of some genera Papilionoideae subfamily in Iraq

Author name: شيماء محي حسون
Supervisor name: نداء عدنان ابو سراج
General topic: Biology
Specific topic: Plant
Degree: Doctorate
Language: Arabic
University location: Babylon
First pages:
Abstract: اجريت هذه الدراسة في مختبرات كلية العلوم / جامعة بابل للفترة من شهر شباط 2016 الى شهر اب 2017 . وقد جمعت العينات من اماكن مختلفة من شمال العراق ووسطه . وقد تناول البحث الحالي دراسة تصنيفية مقارنة شملت بعض الصفات المظهرية العامة والدقيقة للبذور وكذلك دراسة صفات حبات اللقاح , ودراسة الصفات التشريحية لبعض الاجزاء النباتية , فضلا عن الدراسة الجزيئية . وشملت الدراسة تسعة عشر نوعا تعود تسعة اجناس مختارة من عشائر مختلفة من العويئلة الفراشية في العراق , وتضمنت نوعان للجنسAstragalus L. هما A.kahiricus DC. وA.rhodosemius Boiss.and Hausskn ونوع واحد لكل من الاجناس L. Coluteaالنوع Col.cilicica Boiss. ; Coronilla L. النوع Cor. scorpioides (L.)W.D.Koch. ; Glycyrrhiza L. الضرب G.glabra var. glandulifera (Waldst. et Kit) Regel et Herd. ; Hippocrepis L. ; النويع Hi.unisiliquosa L. subsp.bisiliqua (Forssk.)Bornm. ; Hymenocarpos Savi. النوع Hy.circinnatus (L.) Savi. ; Pisum L. النويع P.sativum subsp. elatius (M.Bieb.) Aschers. بالتحديد الضرب var.pumilio Meikle ; والجنس Scorpiurus L. الضرب S.muricatus var.subvilosus (L.) Lam. , فضلا عن تسعة انواع للجنس Onobrychis Mill. هي O.acaulis Bornm. , O.caput - galli (L.) Lam. , O.crista - galli (L.) Lam. , O.carduchorum Townsend , O. megatophros Boiss. , O.haussknechtii Boiss. , O. galegifolia Boiss. , O.ptolemaica subsp. macroptera Townsend. , O.ptolemaica subsp. ptolemaica (Del.) DC. , O.schahuensis Bornm.. اقتصرت الدراسة المظهرية على الصفات المظهرية العامة والدقيقة للبذرة باستعمال المجهر الضوئي Light microscope والمجهر الالكتروني الماسح Scanning electron microscope لسطح غلاف البذرة , وقد دلت النتائج على اهمية صفات البذرة من الناحية التصنيفية , اذ تم تحديد ابرز الصفات والاكثر اهمية في عزل العشائر والاجناس زيادة على عزل الانواع , لاسيما شكل البذرة ولونها وعدد البذور في البقلة , علاوة على الزخرفة السطحية لغلاف البذرة والتي لها الدور البارز في الفصل بين افراد العشيرة Coronilleae , كما كان لها الدور في فصل كل من العشائر المدروسة عن بعضها . اما صفات حبات اللقاح فقد كانت من الصفات المظهرية ذات القيمة التصنيفية العالية لعزل العشائر والاجناس , فقد دلت النتائج وجود اثنان من الطرز المختلفة هما : Colpate وColporate اذ امكن تمييز حبات لقاح الجنس Onobrychis بكونها ذات حبات لقاح من النوع Colpate , كما فصلت حبات لقاح النوع Hymenocarpos circinnatus عن باقي الاجناس بالاستناد الى عدد فتحات الانبات فقد تميز بكون حبات لقاحه سداسية وسباعية فتحات الانبات , كما كان لشكل وحجم الحبة وشكل الاخدود فضلا عن صفات الزخرفة السطحية لجدار الحبة المدروسة تحت المجهر الالكتروني الدور التصنيفي الجيد في فصل الانواع قيد الدراسة. اما جانب الدراسة التشريحية فقد شملت الدراسة صفات البشرة للوريقات والكاس الزهرية والتويج (ورقة العلم) والسيقان , فضلا عن دراسة المقاطع المستعرضة للسيقان ونصول الوريقات والسويقات وحاملات النورات والثمرة (البقلة) . كما شملت الدراسة طبيعة الكساء السطحي وانواع البلورات المنتشرة وانماط اﻠﺗﻌﱠرق Venation patterns. وقد دلت النتائج الى اهمية كل الجوانب التشريحية المدروسة في الفصل بين الاجناس المدروسة وكذلك بين الانواع. وتضمنت الدراسة ايضا التصنيف الجزيئي باستعمال تقانة البلمرة المتسلسل Polymerase chain reaction (PCR) من خلال معرفة تتابع Sequencing المنطقة النووية ITS اذ كان للدراسة الجزيئية اهمية تصنيفية لمعرفة علاقات التقارب والتباعد بين انواع الاجناس المدروسة , وتم التعرف على النوع A.rhodosemius كتسجيل جديد للجنس ضمن الانواع المنتشرة في العراق . | This study was conducted in the laboratories of the Faculty of Science / University of Babylon for the period from February 2016 to the month of August 2017. Samples were collected from various parts of northern Iraq as well as in the central regions .The present investigation deals with a comparative taxononmic study , included some gross and micromorphological characters , as well as the pollen grains characteristics and anatomical characteristics of some plant parts , as well as the molecular study . The study included nineteen species belonging to nine selected genera from different tribes of papilionoideae subfamily in Iraq , and included two species of genus Astragalus L. ( A.kahiricus DC. and A.rhodosemius Boiss.and Hausskn ) , and one species of each genera Colutea L. (Col.cilicica Boiss.) , Coronilla L. (C.scorpioides (L.) W.D.F.Koch) , Glycyrrhiza L. (G.glabra var.glandulifera (Waldst. et Kit) Regel et Herd) , Hippocrepis L. ( Hi.unisiliquosa L.subsp.bisiliqua (Forssk.)Bornm. ) , Hymenocarpos Savi. (Hy.circinnatus (L.) Savi. ) , Pisum L. (P.sativum subsp. elatius (M.Bieb.) Aschers. var.pumilio Meikle. ) and Scorpiurus L. ( S.muricatus var.subvilosus (L.) Lam. ) , in addition to nine species of genus Onobrychis , O.acaulis Bornm. ; O.caput - galli (L.) Lam. ; O.crista - galli (L.) Lam. ; O.carduchorum Townsend. ; O. megatophros Boiss. ; O.haussknechtii Boiss. ; O. galegifolia Boiss. ; O.ptolemaica subsp. macroptera Townsend. ; O.ptolemaica subsp. ptolemaica (Del.) DC. ; O.schahuensis Bornm. The morphological study was limited to gross and micromorphological characters of seed using light microscopy and a scanning electron microscopy for the surface of seed coat . the result indicated the taxonomic importance of the seed characteristics , the most important valuable in isolating the tribes and genera , also species. Especially the seed shap , colour and the number of seeds in the pod . In addition to the surface ornamentation of seed coat , Which had a important role in the separation of members of the tribe Coronilleae, and had a role in the separation of each of the studied tribes. The characteristics of pollen grains have good taxonomic value in isolation of tribes and species . the results indicated that there are two different types of pollen grains , colpate and colporate , the polle grains of Onobrychis can be distinguished from other genera by lacking germinating aperture ,pollen grains of Hymenocarpos circinnatus was separated from the other of the species based on the number of germination pores , The shape and size of the grain and the shape of the colpus as well as the characteristics of the surface ornamentation of the grain wall studied under the electronic microscope, the role of good classification in the class of species under study. pollen grains of other genera were separated based on the characteristics of germination pore , the shape , size of the grain and the shape of , in addition to the characteristics of ornamentation of studied grain wall under the electron microscope . As the anatomical study , included the characteristics of the epidermis of leaves , the calyx , corolla and stems , as well as the study of transverse sections of stems , leaflets petioles , peduncles and the pod . also the nature of indumentum , types of crystals , and venation patterens . the results showed the importance of all anatomical aspects studied in separation between the studied genera as well as between species. The study also included molecular systematic using polymerase chain reactions (PCR) through sequencing of nuclear (ITS) region . it was clear that the molecular study has taxonomical significance to know the phylogeny and relationships of convergence and divergence between species . A.rhodosemius was identified as a new species registry in Iraq.A.rhodosemius is recognized as new species for Iraq.

دراسة جزيئية للجينات البيتا - لاكتاميز في بكتريا Acinetobacter baumannii المقاومة للمضادات الكاربابينيم == Molecular Study of ? - lactamase Genes in Carbapenem Resistant Acienetobacter baumannii (CRAB)

Author name: ربيع عبد الاله مجيد عبد علي الهنداوي
Supervisor name: ايمان محمد جار الله
General topic: Biology
Specific topic: Life Science
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: During the period between April 2016 and January 2017, a total of 1100 clinical specimens (burns, wounds, throat, urine, blood) were collected from two hospitals in Babylon province Al - Hillah Teaching Hospital and Medical City of Mirjan Hospital. All specimens were cultured and 17 Acinetobacter baumannii isolates were obtained from clinical specimens in a percentage of (1.5%) distributed in burn 11 (2.8%), wound 1 (0.6%), throat 1 (2%), urine 3 (0.7%) and blood 1 (0.9%).This study was conducted to determine the presence of carbapenem resistance Acinetobacter baumannii (CRAB) isolates and the prevalence of β - lactamase genes responsible for carbapenem - resistance among clinical isolates of A. baumannii collected from two hospitals in Hillah City. Isolates were identified according to VITEK2 system. Antibiotics susceptibility was assayed by using disks diffusion method according to CLSI recommendations and it’s found 8 isolates was carbapenem resistant.The eight CRAB isolates were tested for biofilm formation by using the tube adherence test and the results showed that 5 of 8 tested isolates (62.5%) were strong for biofilm formation. Two genes related to biofilm formation was investigated (bap & blaPER - 1 genes). Six isolates were positive for the bap gene (75 %) and no isolates had positive for blaPER - 1 gene. The eight CRAB isolates were tested also for the presence of two virulence factor genes include espA (K1 capsular polysaccharide) and ompA (outer membrane protein A), this detection was performed by the conventional PCR technique. The positive result for espA and ompA genes was (62.5%) and (75%) respectively.IIPhenotypic detection of carbapenemase production was performed using the imipenem - EDTA disk and modified Hodge's test (MHT). Then isolates were subjected to monoplex PCR targeting blaCTX, blaTEM, BlaSHV, blaIMP, blaVIM, blaSPM, NDM - 1, NDM - 2, AmpC, OXA - 23, OXA - 24, OXA - 48, OXA - 51, OXA - 58 and OXA - 235 genes, all CRAB isolate gave positive result with MHT and (50%) of these isolates were positive to the imipenem - EDTA disk. PCR experiments showed ; all CRAB isolates were harbored blaOXA - 51 gene, six (75%) isolates were harbored blaCTX gene, four (100%) isolates were harbored blaTEM gene, four (50%) isolates were harbored blaVIM gene, four (50%) isolates were harbored blaSPM gene, seven (87.5%) isolates were harbored NDM - 2 gene, seven (87.5%) isolates were harbored ampC gene, six (75%) isolates were harbored OXA - 23 gene, one (12.5%) isolates were harbored OXA - 24 gene, two (25%) isolates were harbored OXA - 48 gene and one (12.5%) isolates were harbored OXA - 235 gene, while none of these isolates harbored BlaSHV, blaIMP, NDM - 1, NDM - 2 genes. All isolates of A. baumannii appear as MDR, while two isolates appear to be as XDR.These results revealed that CRAB isolates constitute 47% of all A. baumannii that had been isolated from Al - Hillah Teaching Hospital and Medical City of Mirjan Hospital in Babylon province and some of carbapenemase were detected in both phenotypic and genotypic methods (PCR). This underlies the importance of their accurate identifications and reporting to prevent the emergence of complete resistance to the most potent drugs against A. baumannii in Babylon province.

انتاج وتوصيف لنقي المنتجات الايضية لعزلة Streptomyces ودراسة تاثيراتها المضاد حيوية والسرطانية == Production and Characterization of Purified Metabolites from Streptomyces Isolate and Study

Author name: ليندا حميد تركي عطية الغزالي
Supervisor name: رباب عمران راضي الجيلاوي
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: شملت الدراسة الحالية جمع 100 عينة من الترب بواقع 50 عينة من ترب صحراوية جمعت من المناطق التي تبعد مسافة 3 كيلومترات من بحيرة الرزازة و50 عينة من ترب زراعية جمعت من مناطق مختلفة من محافظه كربلاء المقدسة. حيث عزلت 26 عزلة من البكتريا الخيطية من الترب الصحراوية و36 عزلة من البكتريا الخيطية من الترب الزراعية ودرست الفعالية التضادية لهذه العزلات ضد اربعة انواع من البكتريا المرضية ( بكتريا الموجبة لصبغة كرام Staphylococcus aureus and Streptococcus agalactiae وبكتريا السالبة لصبغة كرام (Escherichia coli and Pseudomonas aeru¬ginosa وبطريقة التخطيط العمودي, واظهرت النتائج ان جميع actinomycetes المعزولة من الترب الزراعية ليست لها اي فعالية مضادة للبكتريا المرضية بينما كانت لبكتريا actinomycetes المعزولة من الترب الصحراوية فعالية مضادة للبكترياالمرضية وبمديات مختلفة تبعا لنوع البكتريا المرضية المدروسة, وقد وجد ان لثمانية من عزلات actinomycetes الصحراوية فعالية مضادة للبكتريا المرضية السالبة والموجبة لصبغة كرام وتبعا لذلك المدى الواسع في التثبيط اختبرت فعاليتها المضادة بطريقة الانتشار بالحفر, واظهرت النتائج ان العزله LHR 9 actinomycetesلها فعالية مضادة للبكتريا المرضية اعلى من العزلات الاخرى المختبرة وباستخدام طريقة الانتشار بالحفر, لذلك اختيرت لاكمال محاور الدراسة المتقدمة. درست الصفات المظهرية والبايوكيمياوية والزرعية للبكتريا actinomycetes LHR 9 بعد زرعها على اوساط زرعية مختلفة من وسط استخلاص Streptomyces الدولي واعتمادا على الفحص المجهري باستخدام المجهر الضوئي المركب وتحت قوى تكبير 1000و400مره لدراسة شكل المايسليوم الهوائي والارضي, وقد تبين ان للعزلة مايسليوم هوائي متفرع له مظهر مفصص وغير مجزا وباستخدام المجهر الاليكتروني الماسح تبين ان المايسليوم يحمل ابواغا ملساء وغير متحركة, وبالاعتماد على مجمل الصفات الزرعية والفسيولوجية المدروسة تبين ان البكترياLHR 9 actinomycetes المعزولة تعود لجنس Streptomyces. درست عدد من الظروف الزرعية والغذائية المثلى لتحسين انتاج مواد الايض الثانوي من البكتريا في وسط التخمر وقد كان وسط فول الصويا الحاوي على الدكستروز كمصدر كاربوني والبيبتون كمصدر نتروجيني وK2HPO4 كمصدر فوسفاتي وبظروف تخمر : بدرجه حراره 35م0 , وحموضه 7 , وقوه اهتزاز 200دوره \ دقيقه ولمده 7 ايام كفتره حضن هو وسط الانتاج الامثل . استخدمت مذيبات عضوية مختلفة القطبيةn) - بروبانول وكلوروفورم وخلات الاثيل ووالاسيتون والميثانول والايثانول (في استخلاص مواد الايض الثانوي المنتجة من بكتريا Streptomyces sp. LHR 9 المضادة للبكترياالمرضية وقد كان المذيب العضوي خلات الاثيل افضل المذيبات العضوية في الاستخلاص اذ اعطى مستخلصه البكتيري اعلى قيم في التثبيط البكتيري . نقيت مواد الايض الثانوي بعد استخلاصها بخلات الاثيل بعمود الفصل : جيل السيليكا ذو الابعاد (1.6× 14) سم وباستخدام الميثانول والكلوروفورم بنسبه 8 : 2 حجم\حجم كمحلول الغسل لسم3 واحد من المستخلص البكتيري , وقد جمع 50 جزء من المحلول الناتج بعد الغسل واختبرت فعاليتهاالتثبيطية لنمو البكتريا المرضية , وقد اعتمدت الاجزاء الفعالة لقياس التركيز المثبط الادنى باستخدام طريقة الانتشار من القرص, وقد كانت التراكيز (4.5 , 5 , 2.5 ,3)مايكروغرام/مل هي التراكيز المثبطه الدنيا لبكتريا Escherichia coli , Pseudomonas aeruginosa, Staphylococcus aurues , Streptococcus agalactiae على التوالي. قيمت السمية الخلوية لمواد الايض الثانوي والمنقاة جزئيا لتحديد مدى فعاليتها المضاده للسرطان وبالاعتماد على فحص MTT (3 - (4, 5 - dimethylthiazol - 2 - yl) - 2 - 5 - diphenyl tetrazolium bromide) وباستخدام خطوط خلايا الثدي السرطانية وخطوط خلايا سليمة, وقد اظهرت النتائج بان التركيز 400مايكوغرام\ مل هو التركيز الامثل لتثبيط نمو الخلايا السرطانية بنسبه 60% مع المحافظة على 80% من الخلايا السليمة. اعتمدت الكروماتوغرافيا السائلة Liquid Chromatography - Mass Spectroscopy (LC - MS) في تنقية المركب الفعال وتوصيفة اذ اظهرت نتائج المخطط اللوني ان هنالك خمسة قمم وبالمقارنة مع الاطياف الكتلية للمركبات حسب المعهد الامريكي للمعايير والتقنية National Institute of Standards and Technology ان للمركب صيغة كيمياوية C18H32O2 ووزن جزيئي 282دلتن . درست الفعالية المضادة للاكسدة والمضادة للاورام لمستخلص Streptomyces sp. LHR 9 (المنقى جزئيا) في اناث الجرذان المختبرية المحفزة للاصابة بسرطان الثدي كيمياويا باستخدام مادة 7,12 dimethyl Benz (A) anthracene (DMBA) واظهرت النتائج ان لمستخلص LHR 9 Streptomyces sp. (المنقى جزئيا) القدره على المحافظة على تركيز الانزيمات المضادة للاكسدة في مصل الحيوانات المعاملة بمادة DMBA وبقيم مقاربة لما هي موجودة في مصل الحيوانات السليمة وقد تمثلت اثار ذلك بصغر وزن وحجم الورم فيى منطقة الثدي والتغيرات النسيجية الملحوظة, وعلى مستوى جزيئ ايضا اذ لوحظ وباستخدام تقنية Polymerase Chain Reaction - Single Strand Conformation Polymorphism(PCR - SSCP) التغيرات الوراثية الحاصلة للجينين ( Bcl - 2 وCaspase - 3) بفعل مادة DMBA ودور مستخلص Streptomyces sp. LHR 9 (المنقى جزئيا) في الحفاظ على الشكل الطبيعي للجينين اذ تبين ان هناك83.66% من الحيوانات السليمة و50% من الحيوانات المعاملة بالمستخلص البكتيري تمتلك جين Caspase - 3 بشكله الطبيعي بينما 66.66% من الحيوانات التي عوملت بماده DMBA فقط تمتلك جين Caspase - 3 من النوع الطافر وكذلك بالنسبة للجين Bcl - 2 اذ تبين ان هناك 78.66% من الحيوانات السليمة و60% من الحيوانات المعالجة بالمستخلص البكتيري تمتلك جين Bcl - 2من النوع الطبيعي بينما لوحظ وجود نفس الجين ولكن من النوع الطافر بنسبة 66.67% في الحيوانات المصابة بسرطان الثدي بتاثير مادة DMBA. | The present study included the collection of 100 soil samples from desert regions away from about 3 km from Al - Razzaza lake and agricultural regions at Karbala Province, Iraq. From these samples 26 and 36 actinomycetes isolates were obtained from desert and agricultural regions respectively . All actinomycetes isolates were tested for their antibacterial activity using primary screening against pathogenic bacteria by perpendicular streaking method .The results were showed that all the actinomycetes isolates were isolated from agricultural regions hadn't any antibacterial activity while the 26 isolates isolated from desert regions were had antibacterial activity in different spectra . Eight actinomycetes isolates from all the 26 desert regions isolates were selected for secondary screening due to their antibacterial activities with wide spectrum against pathogenic bacteria namely Gram positive (Staphylococ¬cus aureus and Streptococcus agalactiae) and Gram negative (Escherichia coli and Pseudomonas aeru¬ginosa) by the agar diffusion methods and the results revealed the selection of actinomycetes LHR 9 isolate for farther studies because it gave us the highest inhibition against the tested pathogenic bacteria growth. The active actinomycetes LHR 9 isolate was identified using several morphological and biochemical methods. The morphological characterization was involved the study of aerial and substrate mycelium on many International Streptomyces Project agar medium and using light microscopy at 1000X and 400X to study the mycelium morphology, as well as using the scanning electron microscope (SEM) to examine the spore surface. The results exhibited that the isolate had the aerial mycelium which formed unfragmented, branched, looped and rectus - flexibilis hyphae type bearing non - motile spores with smooth surface. In addition to results of biochemical tests we could revealed that the isolate was belong to Streptomyces genus . The active isolate Streptomyces sp. LHR 9 was selected for optimization critical cultural and nutritional parameters for increasing the antibiotic production titer in fermentation medium (Soybean broth medium), the results showed the dextrose as carbon source , peptone as nitrogenous source and K2HPO4 as a phosphate source with fermentation cultural condition included ; temperature of 35 °C, pH 7 with agitation rate 200 rpm for 7 days as incubation period gave high values in active secondary metabolites production. The antibacterial compound from fermentation medium was extracted using liquid - liquid extraction method with various organic solvents n - propanol, chloroform, ethyl acetate, acetone, methanol and ethanol) 1 : 1 (v/v) . the results was revealed the ethyl acetate the most efficient in extraction . The Streptomyces sp. LHR 9 crude extract was purified by using silica gel column (1.6 X 14) chromatography. Chloroform and methanol (4 : 1) (v/v), was used as an eluting solvent. The active fractions ( had the antibacterial activity ) were selected for determination the minimum inhibitory concentration and evaluation the cytotoxic activity using MTT (3 - (4, 5 - dimethylthiazol - 2 - yl) - 2 - 5 - diphenyl tetrazolium bromide) assay. The results of the MIC of partially purified Streptomyces sp. LHR 9 extract were 4.5 µg/ml for Escherichia coli, 5 µg/ml for Pseudomonas aeruginosa, 2.5µg/ml for Staphylococcus aurues and 3µg/ml for Streptococcus agalactiae . In vitro screening for cytotoxic activity was done by MTT assay for evaluation the anticancer activity of the partially purified antibacterial compounds produced by Streptomyces sp. LHR 9. The cytotoxic activity of the partially purified Streptomyces sp. LHR 9 extract was determined against established MCF - 7 cell line ( breast cancer cell lines ) and WRL cell as a representative of normal breast cell line, depending on their viability ratio. The viability of MCF - 7 cell line was decreased dramatically with the increasing in extract concentration in the same time the viability of WRL cell was decreased in slowly manner. The using of multiple purification methods Liquid Chromatography - Mass Spectroscopy (LC - MS) along with a sensitive measuring method and possibly isolation of these compounds should allow us to evaluate the entire potential of secondary metabolites production, the results from LC - MS chromatogram of the partially purified Streptomyces sp. LHR 9 extract showed five peaks, on comparison of the mass spectra of the constituents with the National Institute of Standards and Technology( NIST) library the compound was had the Formula : C18H34O2 and molecular weight : 282 D. The partially purified Streptomyces sp. LHR 9 extract was evaluated for its in vivo antioxidant and antitumor activity depending on the ability of 7,12 dimethyl Benz (A)anthracene (DMBA) to inducing breast tumor in female rat model, the results revealed the partially purified Streptomyces sp. LHR 9 extract had the ability to keeping the enzymatic antioxidant in approximately its natural concentrations (as the same concentrations in serum of negative group) in serum of tested rats which were induced breast cancer by DMBA and treated with partially purified Streptomyces sp. LHR 9 extract, so these results were more studied on histological plane and the results of that were achieved by decreasing in weight and size of the breast tumor of tested rats and other histological change in breast tissue. In addition to that partially purified Streptomyces sp. LHR 9 extract effect was more studied on molecular plane depending on the Bcl - 2 and Caspase - 3 genes mutation using Polymerase Chain Reaction - Single Strand Conformation Polymorphism ( PCR - SSCP) analysis. The results were two conformations polymorphism in both Caspase - 3 gene ( about 83.66 % of negative group and 50% of treated group had three bands (wild type) where's positive control had 66.66% four bands (mutant type)) and Bcl2 gene (the wild type had one band such as negative group was 78.66% and test group 60%, compared with positive group (60.67%) have two bands(mutant type)). so these results suggest the active apoptotic property of Caspase - 3 and Bcl - 2 and the role of partially purified Streptomyces sp. LHR 9 extract effect in keeping them in their wild type.

دراسة فسلجية وجزيئية للتغاير الجيني لمستقبلات فيتامين د في النساء المصابات بمرض السكري من النوع الثاني == Physiological and Molecular Study of Vitamin D Receptor Gene Polymorphism in Type II Diabetic Women

Author name: نورا ماجد حميد ابو خمرة
Supervisor name: حيدر كامل زيدان السعدي | محمد عبد الله جبر
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: Arabic
University location: Babylon
First pages:
Abstract: هدفت هذه الدراسة الى تقييم دور تعدد اشكال مستقبلات فيتامين (د) وارتباطها بتطور مرض السكري وتاثيرها في الاناث قبل وبعد سن الياس. جينات مستقبلات فيتامين (د)، تتضمن (Apa - I, Taq - I, Fok - I وCdx2) و(جين الفاEstrogen receptor - ) التي حددت بواسطة تفاعل سلسلة البوليميريز - تباين اطوال قطع التقييد وتقنية تفاعل سلسلة البوليميريز المتعدد المتخصص في الاليل, في حين ان الهرمونات والتي تتضمن (الاستراديول والانسولين) والمؤشرات الفسيولوجية (فيتامين د، الكولسترول، البروتين الدهني عالي الكثافة، الدهون الثلاثية، البروتين الدهني منخفض الكثافة، البروتين الدهني منخفض الكثافة جدا، الهيموجلوبين A1C، الجلوكوز الصيامي في الدم، مقاومة الانسولين، الحساسية للانسولين ، ضغط الدم الانقباضي وضغط الدم الانبساطي). اجريت هذه الدراسة في الفترة من اذار 2016 الى تشرين الاول 2016، حيث تم جمع العينات من مستشفى الصدر التعليمي في محافظة النجف. وقد بلغ عدد العينات (80) مريضا مصابين بداء السكري من النوع الثاني بمتوسط عمر (36 - 65 سنة ، وقسمت العينات الى مرحلة ما قبل انقطاع الطمث وبعد انقطاع الطمث, كذلك قسمت حسب مدة المرض وحسب التاريخ العائلي، ومؤشر كتلة الجسم، ومضاعفات المرض (ضغط الدم المرتفع). كما تضمنت الدراسة 40 شخصا اصحاء على ما يبدو بمتوسط عمر (36 - 65 سنة)، حيث ان مجموعة السيطرة تقارن مع مجموعة المرضى. قسمت الدراسة الحالية الى جزئين رئيسيين : الاجزاء الفسيولوجية والجزيئية. واظهرت النتائج ان المرضى الذين يعانون من مرض السكري من النوع الثاني، كان لديهم معنويا (p ≤ 0.05) مستوى اعلى من الكوليسترول ، الدهون الثلاثية، البروتين الدهني منخفض الكثافة، البروتين الدهني منخفض الكثافة جدا، الهيموغلوبين A1C، الانسولين، مقاومة الانسولين ونسبة السكر الصيامي في الدم مقارنة بمجموعة السيطرة، في حين ان معدلات الحساسية للانسولين تنخفض معنويا (P≥0.05) في مرضى السكري من النوع الثاني عند مقارنتهم بمجموعة السيطرة. كان معدل الاستراديول معنويا ( ≤ 0.05) اعلى في الاناث قبل انقطاع الطمث في حين انخفض في الاناث بعد سن الياس لكل من مجموعة السيطرة ومرضى السكري من النوع الثاني. واظهر الضغط الانقباضي والانبساطي فرقا معنويا بين المرضى الذين يعانون من السكري النوع 2 ومجموعة السيطرة. وفقا للمقارنة بين النساء قبل انقطاع الطمث وبعد سن الياس في كل من مرضى السكري ومجموعة السيطرة، اظهرت النتائج ارتفاع معنوي (p ≤ 0.05) في معدلات مستوى هرمون الاستراديول، ومعدلات مستوى هرمون الانسولين ومقاومة الانسولين في كلتا المجموعتين. من ناحية اخرى، اظهرت المقارنة بين المرضى قبل انقطاع الطمث الذين يعانون من السكري ومرحلة ما قبل انقطاع الطمث ارتفاع معنوي (p ≤ 0.05) في معدل مستويات الكوليسترول، البروتين الدهني منخفض الكثافة، هيموغلوبين A1c معدل مستويات (HBA1c)، الجلوكوز الصيامي في الدم , ومستويات هرمون الاستراديول، ومعدلات مستوى هرمون الانسولين، ومقاومة الانسولين، وحساسية الانسولين وضغط الدم الانبساطي. وفقا لمقارنة مرضى السكري بعد انقطاع الطمث ومجموعة السيطرة بعد سن الياس، كانت هناك اختلافات معنوية (p ≤ 0.05) في معدل مستويات الكوليسترول، البروتين الدهني منخفض الكثافة، معدل هيموغلوبين A1c، الجلوكوز الصيامي في الدم , هرمون الاستراديول ومعدلات مستوى هرمون الانسولين، ومقاومة الانسولين وحساسيةالانسولين. اظهرت نتائج تحليل الارتباط وجود ارتباط معنوي (p ≤ 0.05) بين فيتامين (د) مع الدهون الثلاثية والبروتين الدهني منخفض الكثافة جدا في النوع الثاني من مرضى السكري. في مرضى السكري قبل انقطاع الطمث، اظهرت نتائج تحليل الارتباط وجود علاقة عكسية معنويه بين فيتامين (د) مع كل من الدهون الثلاثية والبروتين الدهني منخفض الكثافة جدا في حين تم العثور على علاقة ايجابية معنوية بين فيتامين (د) والبروتين الدهني عالي الكثافة في مرحلة ما بعد انقطاع الطمث في مرضى السكري. في مجموعة السيطرة بعد انقطاع الطمث تم العثور على علاقة عكسية معنويه بين فيتامين (د) ومستوى السكر الصيامي في الدم. اظهر تحليل الارتباط وجود علاقة معنوية عكسية بين معدلات مستوى الكالسيوم وضغط الدم الانقباضي في مجموعة السيطرة، وبينما في مرضى السكري قبل انقطاع الطمث، اظهرت نتائج تحليل الارتباط وجود علاقة ارتباط معنوية بين الكالسيوم ومؤشر كتلة الجسم، بينما وجدت علاقة معنوية عكسية بين الكالسيوم وكلا من البروتين الدهني عالي الكثافة والعمر بالاضافة الى ارتباط ايجابي معنوي مع الاستراديول في المرضى بعد سن الياس. من ناحية اخرى، في مجموعة السيطرة قبل انقطاع الطمث، تم العثور على ارتباط عكسي معنوي بين الكالسيوم وضغط الدم الانقباضي، في حين وجود علاقة طردية معنوية مع هرمون الانسولين ومقاومة الانسولين. في حين لوحظ وجود علاقة عكسية معنوية في مجموعة السيطرة بعد سن الياس بين الكالسيوم ومستوى السكر الصيامي في الدم ومؤشر كتلة الجسم. هنالك ارتباط معنوي كبير بين هرمون الانسولين مع البروتين الدهني عالي الكثافة والعمر وحساسية الانسولين، في حين كان هناك علاقة طردية معنوية بين الانسولين مع مؤشر كتلة الجسم ومقاومة الانسولين في النوع الثاني من مرضى السكري. في مجموعة السيطرة كانت هناك علاقة ارتباط معنوية طردية بين الانسولين ومقاومة الانسولين، ارتباط معنوي عكسية مع حساسية الانسولين. في كل من مرضى السكري قبل انقطاع الطمث وبعد انقطاع الطمث ومجموعة السيطرة كانت هناك علاقة سلبية كبيرة جدا بين الانسولين وحساسية الانسولين، في حين وجود علاقة طردية معنوية مع مقاومة الانسولين. في مرضى السكري قبل انقطاع الطمث، كانت هناك علاقة ايجابية كبيرة بين الانسولين والدهون الثلاثية , البروتين الدهني منخفض الكثافة جدا ومؤشر كتلة الجسم. في مرحلة ما بعد انقطاع الطمث مرضى السكري، كانت هناك علاقة سلبية كبيرة بين الانسولين والهيموغلوبين .A1c ايضا هنالك علاقة طردية معنوية كبيرة بين الهيموغلوبين A1c والسكر الصيامي في الدم في مجموعة السكري. في مجموعة السيطرة كان هناك ارتباط طردي كبير بين الهيموغلوبين A1c والسكر الصيامي في الدم ,وعلاقة عكسية معنوية مع الكولسترول وحساسية الانسولين. وفقا لمجموعة السيطرة قبل انقطاع الطمث، كان هناك ارتباط ايجابي كبير بين الهيموغلوبين A1c والجلوكوز الصيامي في الدم، في حين وجود علاقة عكسية كبيرة مع الكولسترول، الدهون الثلاثية، البروتين الدهني منخفض الكثافة جدا وحساسية الانسولين. من ناحية اخرى، في مجموعات مرضى السكري قبل انقطاع الطمث وبعد انقطاع الطمث وجدت علاقة طردية معنوية بين الهيموغلوبين A1c والسكر الصيامي في الدم , وارتباط ايجابي كبير مع الدهون الثلاثية والبروتين الدهني منخفض الكثافة جدا في مجموعة ما قبل انقطاع الطمث فقط. اظهرت نتائج التحليل الوراثي لتباين النوكليوتيدات المفردة، للجينات المستقبلة لفيتامين د باستخدام تقنية تفاعل سلسلة البوليميريز - تباين اطوال قطع التقييد ان هناك فرقا غير معنوي في الاشكال الجينية (Apa - I, Fok - I, Taq I - ) و(Estrogen receptor - alpha ) بين المرضى ومجموعة السيطرة باستخدام نفس التقنية اعلاه. بينما وجد فرق معنوي بين المرضى ومجموعة السيطرة وفقا للتغاير الجيني في الجين (CdxII)وفقا الى الجين (Apa - I)، كان النمط الوراثي المتماثل (AA) اكثر تواترا في المرضى الذين يعانون من داء السكري من النوع 2 (41٪) من مجموعة السيطرة ، في حين ان النمط الوراثي المتغاير (CA) اكثر تكرارا في مجموعة السيطرة من المرضى. نتائج الجين (Taq - I)، كان النمط الوراثي المتماثل (TT) اكثر تواترا في مجموعة السيطرة من المرضى الذين يعانون من السكري من النوع 2 ، في حين ان النمط الوراثي المتغاير (TC) كان اكثر تكرارا في المرضى من مجموعة السيطرة. وفقا الى الجين (Fok - I)، كان النمط المتماثل (CC) اكثر تواترا في مجموعة السيطرة من المرضى الذين يعانون من داء السكري من النوع 2 ، في حين ان النمط المتغاير (CT) اكثر تكرارا في السيطرة من المرضى ، والنمط المتماثل (TT) كان اكثر تواترا في المرضى من مجموعة السيطرة بينما الجين (ER_alpha)، كان النمط المتماثل (AA) اكثر تواترا في المرضى الذين يعانون من داء السكري من النوع 2 من مجموعة السيطرة ، في حين ان النمط المتغاير (AG) اكثر تواترا في السيطرة من المرضى ، والنمط المتماثل (GG) كان اكثر تكرارا في المرضى من مجموعة السيطرة | This study aimed to evaluate vitamin D receptor gene polymorphism role and its correlation with the development of diabetes disease and its effect in pre and post menopausal females. Vitamin D receptor gene including ( APA - I, FOk - I, Taq - I and CdxII) and (Estrogen receptor alpha gene) determined by Polymerase Chain Reaction (PCR) , restriction fragment length polymorphism (PCR - RFLP) and Allele specific multiple (ASM - PCR), while the hormones including (Estradiol and Insulin) and the physiological parameters ( Vitamin D, Cholesterol, High density lipoprotein, Triglyceride, Low density lipoprotein, very low density lipoprotein, Hemoglobin A1c, Fasting Blood Glucose, insulin resistance, insulin sensitivity, systolic and diastolic blood pressure). This case - control study was done in a period of March 2016 to October 2016 ,where the samples collected from Al - Sadr Teaching Hospital in Najaf Province. The number of samples was (80) females with type 2 diabetes with an average age (36 - 65 year), all of them were with type 2 diabetes are divided to pre menopause and post menopause, also divided according to duration of disease and according to age groups, family history, body mass index and complications with disease (hypertensive blood pressure). Also, the study included 40 apparently healthy people with an average age ( 36 - 65 year) , as control matched with disease group. The present study divided into two main parts : physiological and molecular parts . The results showed that patients with type 2 diabetes , had significantly( p ≤ 0.05 ) higher cholesterol, Triglyceride, Low density lipoprotein, very low density lipoprotein, Hemoglobin A1c, insulin, insulin resistance and Fasting blood glucose levels rate than control group, while the levels rate of insulin sensitivity is decreased significantly (p ≤ 0.05) in type 2 diabetic patients when compared with control group . The Estradiol levels rate was significantly (p ≤ 0.05) higher in premenopausal females while it decreased in postmenopausal females of both control and type 2 diabetic patients. Systolic and diastolic pressure showed significant difference between patients with type 2 diabetic and control. According to the comparison of premenopausal and postmenopausal women in both diabetic patients and in control group, the results showed significant ( p ≤ 0.05) elevation in Estradiol hormone level rates, Insulin hormone level rates and insulin resistance in both groups. On the other , the comparison of premenopausal patients with diabetic and premenopausal control groups the statistical analysis showed significant elevation (p ≤ 0.05) in cholesterol levels rate, Low density lipoprotein (LDL), HemoglobinA1c levels rate (HBA1c), fasting blood glucose (FBG), Estradiol hormone level rates, Insulin hormone level rates, insulin resistance ,insulin sensitivity and diastolic blood pressure. The results of correlation analysis in pre menopausal diabetic patients showed there are significant negative correlation between vitamin D with both Triglyceride (TGC) and very low density lipoprotein (VLDL) while significant positive correlation has been found between vitamin D and high density lipoprotein (HDL) in post menopausal diabetic patients. In post menopausal control group a significant negative correlation has been found between vitamin D and fasting blood glucose (FBG) level.In pre menopausal diabetic patients, the results of correlation analysis showed there were significant positive correlation between calcium and BMI, while significant negative correlation has been found between calcium and both high density lipoprotein (HDL) and age in addition to significant positive correlation with Estradiol in post menopausal diabetic patients.On the other hand, In pre menopausal control group, a significant negative correlation has been found between calcium and systolic blood pressure, while a significant positive correlation with insulin hormone and insulin resistance. While, in post menopausal control group a significant negative correlation has been found between calcium and fasting blood glucose (FBG) level and body mass index. In both premenopausal and postmenopausal diabetic patients and control group there were highly significant negative correlation between Insulin and insulin sensitivity, while highly significant positive correlation with insulin resistance. In pre menopausal diabetic patients, there were significant positive correlation between insulin and Triglyceride (TGC), very low density lipoprotein (VLDL) and BMI. In post menopausal diabetic patients, there were significant negative correlation between insulin and HBA1c.On the other hand, in premenopausal and postmenopausal diabetic patients groups there were highly significant positive correlation between hemoglobinA1c (HBA1c) and fasting blood glucose (FBG), and significant positive correlation with TGC and VLDL in premenopausal group only. The genetic analysis of the Single Nucleotide Polymorphisms , for vitamin D receptor gene by using RFLP - PCR technique showed that there non - significant difference in the genotype polymorphisms of (APA - I, FOk - I and Taq - I) and (Estrogen receptor - alpha gene) between patients and control by using the same technique above, While there were significant differences according to (Cdx - II gene) by using (ASM - PCR) technique. According to (Apa - I gene), the homozygote pattern (AA) were more frequent in patients with type 2 diabetes than control group, While the heterozygote (CA) pattern more frequent in control than patients.The results of (Taq - I gene), the homozygote pattern (TT) were more frequent in control than patients with type 2 diabetes group, While the heterozygote (TC) pattern more frequent in patients than control. According to (Fok - I gene), the homozygote pattern (CC) were more frequent in control group than patients with type 2 diabetes, While the heterozygote (CT) pattern more frequent in control than patients, and the homozygote (TT) pattern was more frequent in patients than control group.While the (ER_alpha gene), the homozygote pattern (AA) were more frequent in patients with type 2 diabetes than control group, While the heterozygote (AG) pattern more frequent in control than patients, and the homozygote (GG) pattern was more frequent in patients than control group

التباين الوراثي في جينات TNF - ?, VEGF - A and IL - 10 المصاحبة لداء الصدفية == Genetic Polymorphism in TNF - ?, VEGF - A and IL - 10 genes associated with Psoriaasis

Author name: خالد عبد الكاظم هادي الطائي
Supervisor name: علي حمود السعدي | وسام علي امين عوض
General topic: Biology
Specific topic: Biotechnologies
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: هدفت هذه الدراسة الى تقصي بعض التغايرات الوراثية لكل من (TNF - α, VEFGF and IL10) لدى مرضى داء الصدفية وعلاقتها بشدة الاصابة باستخدام تقنيات تفاعل البلمرة المتسلسل وتباين اطوال قطع التقيد . بينما قدر مستوى الحركيات المناعية باستخدام تقنية الايلايزا.اجريت هذه الدراسة في الفترة من نيسان 2016 الى اذار 2017، حيث جمعت العينات مرضى داء الصدفية المراجعين لمستشفى مدينة مرجان الطبية، محافظة بابل / العراق. شملت الدراسة 64 عينة لمرضى داء الصدفية 40) ذكر و24 انثى) يبلغ متوسط اعمارهم (9 - 70 سنة)، كما شملت الدراسة 38 شخصا من الاصحاء (21 ذكر و17 انثى) يبلغ متوسط اعمارهم 15 - 65 سنة كمجموعة السيطرة جارت مجاميع المرضى.اظهرت النتائج زيادة معنوية في مستوى كل من TNF - α وIL10 في المصل لدى مرضى داء الصدفية مقارنة بمجموعة السيطرة (P<0.01) . كما اظهرت الدراسة ارتباط معنوي بين مستوى TNF - α وشدة الاصابة ( - r=0.49, p=0.0001) بينما كان معامل الانحدار عكسي غير معنوي بين مستوى IL10 في المصل وشدة الاصابة ( - r= 0.29, P=0.0109) , وكان الانحدار عكسي معنوي بين مستوى IL10 و( - r= - 0.29) (p=0.0028) TNF - α. كما اظهرت النتائج ارتفاعا معنويا (P<0.01) في مستوى VEGF في المصل لدى مرضى داء الصدفية مقارنة بمجموعة السيطرة بينما كان الانحدارغير معنويا بين مستوى VEGF وشدة الاصابة( - r= - 0.05) .اظهرت النتائج وجود ثلاث انماط وراثية للتغايرات في موقع الجين TNF - α - 308 حيث كانت النسب AA 5 (7.81%) ,AG 24 (37.50% وGG 35 (54.69% في مجموعة السيطرة كانت 10 (26.31%) , 16 (42.11% و12 (31.58% اما توزيع الانماط الوراثية الناتجة من تحليل جين VEGF+405 كان النمط الوراثي CG هو السائد 24 (37.05) لدى مرضى الصدفية والنمط الوراثي CC هو الاقل ظهورا 1 (1.56%).. اضافة الى ذلك اظهر نتائج تحديد تتابع النيكليوتيدات للموقع الوراثي IL10 - 1082 نمطين وراثين حيث كان النمط الوراثي GG هو الاكثر تواجدا لدى مرضى داء الصدفية ( 47.5%) والنمط GA بنسبة (28.5%) مقارنة بمجموعة السيطرة التي جاءت جميعها بالنمط الوراثي GG. | Psoriasis is an immune mediated skin disease with a wide - world prevalence involves both genders and different age, it is a multifactorial disease influenced by genetic and environmental factors. The current study aims to evaluate the association of (Interleukin 10, Tumor Necrosis Factor - α and Vascular Endothelial Growth Factor) genes polymorphism in psoriasis. Single Nucleotide Polymorphism (SNPs) determined by Polymerase Chain Reaction (PCR), restriction fragment length polymorphism (PCR - RFLP) and DNA sequencing techniques, while there serum levels determined by ELISA. This case - control study is done in a period of March 2015 to December 2017, where the samples collected from Marjan Medical City in Babylon Province. The number of samples was (64) patients psoriasis (40 males and 24 females ) with an average age ( 9 - 70 year), (50) of them were with type 1 psoriasis and (14) type 2. In addition, the study included 38 apparently healthy people who were (21 males and 17 females) with an average age (15 - 65 year), as control matched with disease group. The present study revealed a significant increasing (P<0.01) of Tumor Necrosis Factor - α (TNF - α) and Interleukin 10 (IL10) in patients compare with controls. In addition, there is a significantly regression between severity of disease and TNF - α serum level (r =0.49, p=0.0001) and non - significant invers regression with IL10 serum level (r= 0.29, P=0.0109). In addition, the results established an A significant negative correlation which has been found between IL10 and TNF - α (r= - 0.29) (p=0.0028). Physiological, the study shows significant increasing in Vascular Endothelial Growth Factor (VEGF) level in patient compare with control (P<0.01). There is no correlation between Vascular Endothelial Growth Factor (VEGF) serum level and severity or onest of disease (r= - 0.05).Genetically, analysis of the Single Nucleotide Polymorphisms PCR - RFLP genotyping for TNF - α - 308 G/A (rs1800629) SNP, Genotype distribution in patient were GG 35 (54.69%), AG 24 (37.50%) and AA 5 (7.81%) while in control were AG16 (42.11%), GG 12 (31.58%) and AA10 (26.31%).The genetic analysis of the Single Nucleotide Polymorphisms of VEGF +405 SNP, genotype distribution CC homozygous was predominant in patient 39(60.94%) and GG homozygous was 24 (37.05) While the GCwas the least 1 (1.56%). Comparing with the control group was CG 18(47.37%), CC 13(34.21%) and GG 7(18.42%).On the other hand , the statistical analysis for the role of genotyping for TNF - α - 308 SNP in the Serum levels of TNF - α were different between TNF - 308 AA (126.90 ± 14.96) patients and TNF - α GA(106.55 ± 16.42) and GG (57.94 ± 7.72) genotypes (p < 0.01). Analysis for the role of genotyping for VEGF +405 SNP non - significant difference between homozygous CC (408.30 ± 0.00), homozygous was GG (326.00 ± 34.81) and heterozygous CG (376.41 ± 58.63).This result promotes that the both of TNF - α - 308 SNP polymorphism and VEGF +405 SNP strongly implicated in the pathogenicity, severity and onest of psoriasis.PCR - sequencing for IL10 - 1082 A/G (rs1800896) locus shows a significant difference of percentage distributions of alleles and genotypes for IL10 - 1082 (rs1800896) locus between patient and control, GG homozygous was predominant in patient (71.5%) while the AG heterozygous was (28.5 %). Comparing with control group GG (100%).

تحضير وتوصيف المركبات النانوية ودراسة الفعالية المضادة للبكتريا == Synthesis, Characterization and Antibacterial Activity of Synthesized Nanoparticles

Author name: علي جبار عبد الحسين رضا الكواز
Supervisor name: فريال جميل عبد عطية | اياد فاضل محمد القيم
General topic: Biology
Specific topic: Microbiology
Degree: Doctorate
Language: English
University location: Babylon
First pages:

الفعالية الحياتية لبعض مستخلصات النباتات الطبية على بعض انواع البكتريا والتعبير الجيني لانزيمات الكيراتينز المنتج من قبل Trichophyton rubrum == Biological Activity of some Medicinal Plant Extracts on some Bacteria and Gene Expression of Keratinases Produced from Trichophyton rubrum

Author name: علي جليل عبيد حسن عينون
Supervisor name: جواد كاظم عبود علي الجنابي | وجدان رضا محمود محمد تاج الدين
General topic: Biology
Specific topic: Microbiology
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: The present study aimed to search for safe and effective antifungal agents through investigation of the phytochemical characterization and bioactive properties of medicinal plants (Pimpinella anisum essential oil and Moringa oleifera and Malva sylvestris leaf extracts) and their effect on gene expression of keratinases produced by T. rubrum using Real Time PCR.Phytochemical analysis of active materials of P. anisum essential oil and M. oleifera leaf extracts were carried out, through TLC accompanied autobiography, high performance liquid chromatography (HPLC) and GC - MS analyses were proceeded to relate the chemical profile with their antifungal activity. Also, the cytotoxic effects of active compound and crude extract for both plant extracts were determined using MTT (3 - (4,5 - dimethylthiazol - 2 - yl) - 2,5 - diphenyltetrazolium bromide dye) assay. Screening the antifungal activity of Pimpinella anisum essential oil, Moringa oleifera leaf extracts and four traditional antifungal agents against growth and development of two strains of T. rubrum differed in their virulence were conducted. MIC for crud extracts and antifungal agent were also determined using microdilution plate, moreover, the effects of crud extracts and active compounds on gene expression was evaluated.Qualitative TLC, HPLC analysis for the anise essential oil extract revealed the presence of anethole which was identified as a main volatile compound in this extract which was identified as anethole. GC - MS analysis also revealed that trans - anethole is the major compound (96.8%), then Himachalene (1.84%), other components were also present but less than 1% e.g. Estragole, cyclohexene and 2 - Methoxy - 5 - (1 - propenyl) phenol. On the other hand, LC - MS analysis were showed the existence of that keratinase inhibitor (extracted from Moringa oleifera leaf)IICryptochlorogenicacid (C16H18O9), Astragalin (C21H20O11), so the presences of these compounds reflected the inhibitory effects on keratinase enzyme.The results upon screening, revealed that the anise oil inhibited both strains of T. rubrum, since the growth inhibition for first strain were 21, 30 and 39 mm at 15.6, 31.2 and 62.5 μl/ml respectively, while in second strain were 24, 32 and 39 mm at 15.6, 31.2 and 62.5 μl/ml respectively. The tested strains of this fungus revealed substantial sensitivity pattern toward crude extract of essential oil and anethole as well. Results showed that there was considerable growth inhibition for both strains of T. rubrum at minimal inhibitory concentrations (MIC) between 15.6 μg/mL for crude oil and 7.5 μg/mL for anethole. The inhibition in radial growth due to the effect of anise essential oil increased from 56% at 3rd day to 86% at the 7th day. Sporulation was substantially decreased by anise oil treatment. Anise oil was significantly inhibited conidial germination for both strains. Treatment with anise oil induced morphological changes in the conidial group where the conidia were absent in treated sample. Protease inhibitor isolated from mature leaves of M. oleifera showed great ability to inhibit keratinase activity of T. rubrum.MTT assay revealed that anethole is safe as phototherapeutic agents, when it is having no effects on normal cell, but shown anticancer activity against cancer cell.Anise oil, anethole, M. oleifera crud inhibitor, Cryptochlorogenic acid and Astragalin showed high inhibitory effects on gene expression of keratinase enzyme in both strains of T. rubrum KP979791 and KP979787.

دراسة مقارنة، مجهرية ، جزيئية، بين الاميبا الحالة للنسيج E. histolytica والاميبا المتغيرة E. dispar في مرضى محافظة بابل == Comparative Study , Microscopic and Molecular , Between Entamoeba histolytica and Entamoeba dispar in Babylon Patients

Author name: شمس حامد كاظم خليل السلطاني
Supervisor name: ماهر علي جتان القريشي
General topic: Biology
Specific topic: Zoology
Degree: Doctorate
Language: Arabic
University location: Babylon
First pages:
Abstract: اجريت الدراسة الحالية في الفترة من شهر ايلول2015 ولغاية اب 2016 للتحري عن وبائية الطفيليات المعوية الاميبا الحالة للنسيج Entamoeba histolytica والاميبا غير الممرضة Entamoeba dispar بطريقة الفحص المجهري وطريقة تفاعل سلسلة البلمرة PCR والمقارنة بين كلا الطفيليين في بعض جينات عوامل الضراوة السستين بروتينيز 5 وamoebapor A ، Ap - B ، Ap - C . كذلك تضمنت الدراســـــة تقدير تركـــــيز الضــــد الافرازي S - IgA ، وكذلك قياس تركيز الاضداد IgA ، IgG ، IgMفي مصول المرضى والسيطرة.بلغ عدد العينات المفحوصة 200 عينة خروج لمرضى يعانون من الاسهال لفئات عمرية مختلفة تم جمعها من المستشفيات والمراكز الصحية وبعض العيادات الخاصة في محافظة بابل، تم فحص العينات بطريقة المسحة المباشرة وطريقة تفاعل تسلسل البلمرة باستخراج الدنا الخاص بالطفيليات منها ، في مختبرات المستشفيات والمراكز الصحية ومختبر الطفيليات المتقدم في كلية العلوم/ جامعة بابل .اظهرت نتائج الفحص المجهري ان نسبة الاصابة الاجمالية بالطفيليات المعوية اميبا الزحار 20% ) 40عينة) ، بينما بلغت 73% بطريقة تفاعل تسلسل البلمرة في حين كانت نسبة الاصابة 27.5 % لطفيلي E. dispar باستخدام البرايمر الخاص بهذا الطفيلي Ed - 1. وتضمنت الدراسة الحالية ارتباط عامل العمر والجنس ومنطقة السكن واشهر السنة بنسبة انتشار كلا الطفيليين وباستخدام الفحص المجهري وPCR واوضحت نتائج التحليل الاحصائي عدم وجود فروق معنوية في عدد المصابين بين العمر والجنس الريف والمدينة وباختلاف نوع الطفيلي، بينما وجدت فروق معنوية لنسب انتشار كلا الطفيليين حسب اشهر السنة .بينت نتائج الفحص المجهري حسب الفئة العمرية ان اعلى نسبة اصابة بلغت 37.5% للفئة العمرية (1 - 10) سنة ، بينما بلغت اقل نسبة اصابة 2.5 % للفئة العمرية (31 - 40) سنة، في حين اشارت الدراسة الجزيئية الى ان اعلى نسبة اصابة36.36 و41.3 % للفئة العمرية (1 - 10) سنة واقل نسبة اصابة هي 9.09 و3.4% لكلا من طفيلي E. dispar وE. histolytica ، على التوالي.حسب الجنس بلغت اعلى نسبة اصابة لطفيلي E. histolytica للذكور67.5 % في حين كانت في الاناث32.5 %بطريقة الفحص المجهري ، اي كانت اعلى من نتائج الـــ PCR ، اذ بلغت 41% ، 59 % للاناث والذكور على التوالي ، مقارنة بطفيلي E. dispar 73% للذكور اعلى من الاناث 27%.بلغت نسبة الاصابة بطفيلي اميبا الزحار حسب منطقة السكن في الريف 75% اعل من المدينة 25% بطريقة الفحص المجهري ، مقارنة بنتائج الـــ PCR كانت نسب الاصابة في الريف 69% اعلى من المدينة 31% ، بينما لطفيلي E. dispar في المناطق الريفية 64% اعلى من المدينة 36%.وفقا للاشهر السنوية للدراسة كانت الاصابة اكثر شيوعا في يونيو ويوليو 20و 27.5% على التوالي بطريقة الفحص المجهري، واقل نسب في نوفمبر وديسمبر ويناير ومارس بنسبة 2.5% , مقارنة لنتائج الـــPCR لاميبا النسيج كان الاصابة اكثر شيوعا في يونيو ويوليو 16.6 ، 33.3 % على التوالي، وكان اقل تواترا في اكتوبر، نوفمبر، ديسمبر، ومارس 3.3% ، في حين لطفيليE. dispar كان معدل الاصابة مرتفع في مايو ويوليو 36.36% ، واقل في سبتمبر9.09٪، مع وجود فروقات معنوية بين الطفيليات لكلتا الطريقتين.اوضحت نتائج الدراسة الجزيئية ان هناك تغاير في الدنا الخاص بعوامل الضراوة في كلا الطفيليين ، اذ كانت جميع عينات طفيلي اميبا الزحار موجبة للجين البادئ سستين بروتينيز 5 CP5 وكذلك لــ amoebapor A ، Ap - B، Ap - C، في حين لطفيلي E. dispar وجدت سبعة عينات 63.6% موجبة لــ amoebapore A ، وستة عينات 54.5% لــ Ap - B ، وثلاث عينات 27.2% لــ Ap - C، مع وجود فروق معنوية لكلا الطفيليين . اظهرت نتائـــــــــــــــــج الدراسة المناعية وجود فــــــــــــــروق معنوية للمرضــــــى المصابيــــــن بطفيلي اميبا الزحار مقارنـــــــــــــــة مع مجموعــــــــــة السيطــــــــــرة ، وبلـغ مستوى تركيز الكلوبيوليــــن المناعي S - IgA (8.582 ± 0.351) مايكروغرام/ ديسيلتر لطفيلي E. histolytica و(5.213 ± 0.421) مايكروغرام/ ديسيلتر لــ E. dispar و(1.935±0.03) مايكرو غرام/ ديسيلتر لمجموعة السيطرة ، كذلك بلغ اعلى تركيز لـــــ IgA , IgG, IgM (387.9 , 707.4, 294.9) ملغ/دل لطفيلي اميبا الزحار مقارنة مع طفيلي E. dispar مع مجموعــــــــــة السيطــــــــــرة ، مع وجود فروق معنوية للمرضى المصابين باميبا الزحار . | The present study conducted in the period from September 2015 to Augusts 2016 to determination of epidemiology for Entamoeba histolytica and nonpathogenic Entamoeba dispar by microscopic examination and conventional PCR and compromise some virulence factors cysteine proteinase CP5 gene , amoebapore A , Ap - B, Ap - C, for both parasites and estimate immunoglobulin G,A,M, and S - IgA in serum of patientsAll stool samples (200) collected from patients for different ages suffering from diarrhea or bloody diarrhea and attended to some hospitals and medical centers in Babylon governorate . All samples were examined by direct wet preparation method and polymerase chain reaction by extract the parasites DNA, in hospital and medical centers laboratories and the advanced parasites laboratory in the Biology Department / College of Science / Babylon University. The microscopic examination results show out of 40 stool samples had E. histolytica with percent 20% ,in compromise to PCR product infection rate was higher 73% , and for E. dispar 27.5% by Ed - 1 primer specific for this parasite.This study includes the relation of age, gender, and residence for both parasites infection, without significant differences for both parasites, while the annual study months had significant differences for both parasites by two methods . The microscopic study results according to ages group the highest infection percentage 37.5% for ages (1 - 10) year and the lower percentage was 2.5% for ages (31 - 40) year, while by PCR technique higher percentage 41.3 , 36.36 % for ages (1 - 10) , while the lower percentage was 3.4% , 9.09 % for (21 - 30) years, for E. histolytica and E. dispar , respectively . According to the gender, the infection Percentage in male and female 67.5% , 32.5% respectively by microscopic examination ,is higher than infection rate by PCR product 59% , 41%, for E. histolytica respectively, in compromise for E. dispar in male 73 % is higher than female 27 %.E. histolytica infection according to rural regions was 75 % higher than urban regions 25 % by microscopic examination ,in compromise to PCR product ,infection rate in rural regions was 69 % higher than urban regions 31 %, while for E. dispar in rural regions was 64% higher than urban 36 %.According to annual months of the study, the most frequent infection was in June and July 20 , 27.5% respectively by microscopic examination , and lower frequent was in November , December , January and March 2.5%, in compromise to PCR product results for E. histolytica the most frequent infection was in June and July (16.6 , 33.3)% respectively , and lower frequent was in October, November , December , and March 3.3% , while for E. dispar The high infection rate was in May and July 36.36%, and lower frequent was in September 9.09 %, with significant differences between parasites for both methods. For molecular study results, out of (40) stool samples, only (29) sample showed positive for CP5 gene marker for E. histolytica and 11 (27.5%) samples showed negative for this gene, moreover (11) stool samples showed also positive for (Ed) primer which is specific for E. dispar ,all samples of E. histolytica were positive for cysteine proteinase CP5 gene , amoebapore A , Ap - B, Ap - C, while for E. dispar only seven samples 63.6% positive for amoebapore A, six samples 54.5 % for Ap - B, and three samples 27.2% for Ap - C , with significant differences between both parasites virulence factors genes. The level of secretory IgA showed significant differences in patients with E. histolytica compared with control group, The level of secretory - IgA was (8.582 ± 0.351) μg /dL for E. histolytica and (5.213 ± 0.421) μg /dL for E. dispar and (1.935±0.03) for control group.The result of the present study, revealed the concentrations of immunoglobulin IgA , IgG , IgM, (387.9 , 707.4, 294.9 mg/dl), were higher in E. histolytica patients group compared to E. Dispar patients and control group , with a significant differences at p ≤ 0.05 for E. histolytica group

تاثير السموم الكبدية الـMicrocystin - LR على الصفات البايوكيميائية والجزيئية في الكارب الاعتيادي والجرذ == The Effects of Hepatotoxic Microcystin - LR on Biochemical and Molecular Characteristics of Cyprinus carpio and Rattus rattus

Author name: ماهر محمـــد خضـــيري الجبــــــوري
Supervisor name: مؤيد جاسم ياس العماري | اياد محمد جبر المعموري
General topic: Biology
Specific topic: Zoology - Pollution
Degree: Doctorate
Language: English
University location: Babylon
First pages:
Abstract: صممت الدراسة الحالية لدراسة تاثير السموم الكبدية الـMicrocystin - LR على الصفات البايوكميائية والجزيئية في الحيوانات المختاره (الكارب الاعتيادي والجرذ) حيث كان تركيز microcystin - LR المنقى من Anabaena circinalis وOscillatoria splendida 74.832 مايكروغرام / مل61.85 مايكروغرام/ مل على التوالي الذي تم الكشف عنه وجمعه بواسطة الكروماتوكرافية السائلة فائقة الاداء التحضرية بينما كان تركيزه في Westiellopsis prolifica وStigonema sp هو 28.385 مايكروغرام/مل و23.591 مايكروغرام/مل على التوالي. استخدمت تراكيزالــmicrocystin - LR للجرذ واسماك الكارب الاعتيادي عن طريق حقنها تحت الغشاء البريتوني خلال التعرض الحاد الحادة (96 ساعة) , كانت ( 60 , 40 , 20 ) مايكروغرام /200 غرام من زون الجسم , ومن ثم تحديد الجرعة المتوسطة المميتة للجرذ واسماك الكارب الاعتيادي وكانت (52.48 و67.95) مايكروغرام / 200 غرام من وزن الجسم على التوالي . بينما في التعرض المزمن ( 30 يوم ) ،كانت التراكيز المستخدمة هي (3 و6 و9) مايكروغرام/ 200 غرام من زون الجسم. بينت نتائج الدراسة الحالية زيادة معنوية في كل المؤشرات البايوكيميائية مع زيادة الجرعة الــMicrocystin - LR في دم وكبد الجرذان واسماك الكارب الاعتيادي خلال التعرض الحادة ، لكن خلال التعرض المزمن ايضا ازدات كل المؤشرات البايوكيميائية زيادة معنوية مع زيادة تركيز الــMicrocystin - LR ، بينما قلت تركيز مضادات الاكسدة الكلية والسايتوكروم P450 والفوسفيتيز القاعدي في الدم والكبد والـGOT في دم الجرذ بشكل معنوي مع زيادة تركيز الجرعة الــmicrocystin - LR بالمقارنة مع مجموعة السيطرة ، بينما في اسماك الكارب الاعتيادي ، تركيز فيتامين C والسايتوكروم P450 في الدم والكبد ، والفوسفتيز القاعدي والـGPT في الكبد حيث قل بشكل معنوي مع زيادة تركيز الـmicrocystin - LR بالمقارنة مع مجموعة السيطرة. بينت ايضا نتائج الدراسة الحالية الحصول على ست انواع من التشوهات الكروموسومية هي الكروموسومات الحلقية والكروماتيد المتكسر وكروموسومات المتقطعة وكروموسومات القلة وثنائية المركز خلال الفترة المزمنة في نخاع العظم للجرذ والكبد الاسماك الكارب الاعتيادي ، فان عدد كل نوع من التشوهات الكرموسومية في الجرذ واسماك الكارب الاعتيادي ازدادت بشكل معنوي مع زيادة تركيز الــmicrocystin - LR ، اظهر التحليل الاحصائي ارتباط معنوي موجب بين التشوهات الكروموسومية والمؤشرات البايوكيميائية ومؤشرات تحطم الـDNA ، اما دليل الانقسام الخلوي ازداد بشكل معنوي مع .زيادة الجرعة في نخاع عظم الجرذ وكبد الكارب الاعتيادي بالمقارنة مع مجموعة السيطرة . المؤشرات الجزيئية للــDAN المتحطم كالطول المذنب Comet lengthو طول الذنب Tail length وهجرة الذنب Tail moment في دم وكبد الجرذ واسماك الكارب الاعتيادي ، والتي ازدادت بشكل معنوي مع زيادة جرعة الــmicrocystin - LR ، ايضا اظهرت النتائج ارتباط معنوي موجب مع المؤشرات البايوكيميائية والتشوهات الكرموسومية ، ايضا بينت الدراسة الحالية بان تحطم الـDNA في الكبد اكثر مما في الدم . | The presents study was designed to study the effects of hepatotoxic microcystin - LR on biochemical and molecular characteristic of selected animals (Cyprinus carpio and Rattus rattus) Whereas the concentration of microcystin - LR obtained from Anabaena circinalis and Oscillatoria splendida that purification and collection by utilizing preparative high performance liquid chromatography was 74.832 µg/ml and 61.85 µg/ml respectively. While its concentration in Westiellopsis prolifica and Stigonema sp was 28.385 µg/ml and 23.591 µg/ml respectively The concentrations of toxin that used for rats (Rattus rattus) and common carp (Cyprinus carpio) via intraperitoneally injection during acute period (96 h) was (20, 40, 60) µg/200g body weight and then determination of median lethal dose for rats and C. carpio was (52.48, 67.95) µg/200g body weight respectively, While in chronic period (30 days), the concentrations used for above animals was (3, 6, 9) µg/200g body weight . The results of presents study was showed all biochemical markers significantly increased with increasing dose of microcystin - LR in blood and liver of rats and C.carpio during acute period, but in chronic period also all biochemical markers in blood and liver of rats and C.carpio have been significantly increased with increasing concentration of microcystin - LR, Whereas the total antioxidant concentration, Cytochrome P450 and Alkaline phosphatase in blood and liver, and GOT in blood of rats were significantly decreased with increasing concentration of dose of microcystin - LR as compared with control groups, While in C. carpio, the concentration of vitamin C and Cytochrome P450 in blood and liver, and Alkaline phosphatase and GPT in liver were significantly decreased with elevated concentration of microcystin - LR as compared with control groups. The presents study was shown six type of chromosome aberration which are ring chromosomes, chromatid break, fragmented chromosomes, aneuploidy and dicentric chromosomes that are obtained during chronic exposure period in bone marrow of rats and liver of C. carpio, the number of each type of chromosome aberration in rat and C .carpio have been significantly increased with increasing microcystin - LR concentration, the statistical analysis appeared positive significant correlation between chromosome aberration, biochemical markers and marker of DNA damage. The mitotic index was significantly increased with increasing microcystin - LR concentration in bone marrow of rats and in liver of C .carpio as compared with control groups. The molecular makers of DNA damage such as comet length, tail length and tail moment in blood and liver of rats and C .carpio were significantly increased with increasing concentration of microcystin - LR, also appearance of results positive significant correlation with biochemical markers and chromosome aberration and also presents results shown the DNA damage in liver more than in blood.

استخدام دقائق الفضة النانوية المنتجة من بكتريا الزوائف الزنجارية Pseudomonas aeruginosa كنظام لتسليم الممنع == Silver nanoparticles of Pseudomonas aeruginosa as an immunogen delivery system

Author name: احمد جمال حسين السرحان
Supervisor name: فريال جميل عبد عطية
General topic: Biology
Specific topic: Microbiology
Degree: Doctorate
Language: Arabic
University location: Babylon
First pages:
Abstract: في هذه الدراسة تم جمع 155 عينة شملت العينات السريرية والعينات البيئية من مستشفى الحلة التعليمي . بلغ عدد العينات السريرية 58 عينة عزلت من المرضى الذين يعانون من اصابات الحروق والتهاب المجاري البولية وتجرثم الدم وجمعت العينات البيئية 97 عينة من الاسرة والمطهرات وغرف المرضى في مستشفى الحلة التعليمي من اذار 2016 الى ايار 2016 . شخصت العزلات بالاعتماد على الاختبارات المزرعية والكيموحيوية باستخدام نظام Api 20E فضلا عن تاكيد تشخيصها بوساطة جهاز VITEK 2 . ومن مجموع 155 عينة كانت 30 عزلة عائدة لبكتريا Pseudomonas aeruginosa بنسبة 19.35% . تم التصنيع الخضري لدقائق الفضة النانوية (AgNPs) باستخدام عالق بكتريا P. aeruginosa . كما تمت دراسة صفات دقائق الفضة النانوية باستخدام الاشعة فوق البنفسجية - المرئية الطيفي وحيود الاشعة السينية (XRD) وتشتت طاقة الاشعة السينية (EDX) والاشعة تحت الحمراء الطيفي ( FTIR ) والمجهر الالكتروني الماسح (SEM) . اظهر التحري الجزيئي للسموم الخارجية للبكتريا بوساطة تقنية تفاعل البلمرة المتسلسل وباستعمال بادئات متخصصة للجينات ( EXO A , EXO T and EXO S )امتلاك جميع العزلات جين للسم الخارجي A والسم الخارجي T بينما اظهرت 22 عزلة نتيجة موجبة للسم الخارجي S. هذه النتائج اشارت الى ان وجود جينات السموم الخارجية هي عوامل ضراوة بارزة لعزلات P. aeruginosa . وتم انتاج السم الخارجي A من بكتريا Pseudomonas aeruginosa في وسط مرق الصويا المديلز وتنقيته باستخدام نسبة اشباع 85٪ من كبريتات الامونيوم ثم بواسطة عمود كروماتوغرافيا السائلة عالية الاداء لانتاج سم عالي النقاوة بعد ذلك تم تحديد الوزن الجزيئي للسم المنقى ليكون 71 كيلو دالتون . تضمنت الدراسة المناعية دراسة الخصائص المستضدية للسم المضعف ودقائق الفضة النانوية والمستضد المختلط المكون من التوكسويد ودقائق الفضة النانوية ثم التحري عن الدورالمناعي لدقائق الفضة النانوية كنظام اعطاء .اذ تمت باستخدام20 ارنب قسمت الى اربعة مجاميع كل مجموعة تضمنت 5 ارانب ,حيث حقنت المجموعة الاولى بالتوكسويد فقط اما المجموعة الثانية فقد حقنت بدقائق الفضة النانوية فقط والمجموعة الثالثة فقد حقنت بالمستضد المختلط ,اما المجموعة الرابعة فحقنت بالمحلول الملحي الفسلجي واعتبرت كسيطرة, وبعد انتهاء مده التمنيع تم التحري عن بعض المعايير المناعية . اظهرت نتائج جميع الفحوصات المناعية المستخدمة في هذه الدراسة ان كل من للسم المضعف ودقائق الفضة النانوية والمستضد المختلط قد اعطت زيادة معنوية بالمقارنة مع مجموعة السيطرة وعلى مستوى احتمالية P<0.05 .فقد اظهرت نتائج اختبار اختزال الصبغة ( NBT ) التي تم الحصول عليها لهذه المستضدات الثلاثة في هذا الاختبار بمعدل(66.8%, 60.6% 73.6% ) على التوالي بينما مجموعة السيطرة بمعدل(46.8%) . وتم استخدام اختبار الجلد حيث اظهرت النتائج ان هذه المستضدات الثلاثة اثرت في تفاعل الحساسية sensitivity للارانب وقد ادت المستضدات المحقونة الى زيادة معنويه في قطر الانتفاخ بعد 4),24,48,(72 ساعة مقارنة مع مجموعه السيطرة على مستوى احتمالية P<0.05. وتم استخدام اختبار معامل الانقسام ايضا والنتائج التي تم الحصول عليها بمعدل(26.96%, 22.8%, 32.11%) على التوالي بينما مجموعة السيطرة بمعدل(13.33%). بالاضافة الى ذلك فقد تم استخدام طريقة الانتشار المناعي لتقدير مستوى الانتشار المناعي للكلوبيولينات المناعية في المصل, واظهرت النتائج بان مستوى الكلوبيولينات المناعية بمعدل (17, 19.8 و19.4 ( ملم على التوالي بالمقارنة مع مجموعة السيطرة عند P <0.05. وايضا تم استخدام تقنية الامتزاز المناعي المرتبط بالانزيم (ELISA) لتقدير تركيز عناقيد التمايز في المصل CD4 وCD8, وقد كان تركيزCD4 بمعدل (47.49 , 43.82 و63.61 ) نانوغرام/مل على التوالي بينما مجموعة السيطرة بمعدل(26.59) نانوغرام/مل في حين تركيزCD8 بمعدل (2.79 , 3.21و 6.08) نانوغرام\مل بينما مجموعة السيطرة بمعدل (1.6) نانوغرام/مل . وقد اظهرت الدراسة النسيجية بان ليس هنالك افات مرضية في مجاميع الارانب الممنعة بانواع مختلفة من المستضدات . حيث اظهر الكبد ارتشاح للخلايا الالتهابية في المنطقة البوابية والتهاب نقطي في الفصيصات الكبدية في مجموعة السم المضعف ومجموعة المستضد المختلط بينما اظهرت مجموعة دقائق الفضة النانوية ارتشاح للخلايا الالتهابية في المنطقة البوابية فقط . كما اظهر الطحال فرط تنسج للمفاويات في منطقة اللب الابيض لمجاميع الارانب الممنعة . | The study included (155) samples which collected from both clinical and hospital environmental samples. Fifty eight specimens were collected from patients suffering from wounds , urinary tract infections and bacteremia. Ninety seven hospital environmental samples were collected from beds , disinfectants and patient’s rooms at Al - Hilla Teaching Hospital from March 2016 to May 2016. The isolates were identified according to cultural , biochemical test using Api 20 E system and confirmed by VITEK 2 system compact. The results showed that 30/155 (19.35%) gave positive culture for Pseudomonas aeruginosa . The green synthesis of silver nanoparticles (AgNPs) were prepared using P. aeruginosa suspension . The characterization of silver nanoparticles was carried out using UV - Visible spectroscopy, X Ray diffraction (XRD), Energy Dispersive X - ray Crystallography (EDX), Fourier Transform Infrared Spectroscopy (FTIR) and Scanning electron microscopy (SEM). Genotypic detection of P. aeruginosa exotoxins by polymerase chain reaction was done by using specific primers for exotoxin A, exotoxin T and exotoxin S . All isolates were positive to exotoxin A and exotoxin T whereas (22) isolates gave positive result for exotoxin S gene. These results indicated that the presence of exotoxins genes were prominent virulence factors for P.aeruginosa isolates. Exotoxin A from Pseudomonas aeruginosa has produced in tryptic soy broth dialysate and purified using 85% saturation of ammonium sulphate then by HPLC column to yield highly purified toxin then molecular weight of purified toxin has determined to be 71 KD . The immunological study involved studying the antigenicity properties of the toxoid alone , AgNPs alone and mix antigen then investigating the immunological role of AgNPs as delivery system. It was done by using 20 males New Zealand rabbits and divided into four groups, the first group was immunized with toxoid alone, the second group was immunized with AgNPs alone , the third group was immunized with mix antigen , while the fourth group considered as control group and immunized with normal saline, after the immunization period, some immunological parameters were investigated. In all immunological tests of this study the results revealed that toxoid alone , AgNPs alone and mix antigen were given significantly increased in comparison with control group at P<0.05 . For NBT test , the result that was obtained for these three types of antigens with mean value (66.8%, 60.6% and 73.6%) respectively ,while the control group with mean value (46.8%) . The results of skin test showed these three types of antigens induce the hypersensitivity of the rabbits and the induration diameter of these three types antigen after 4, 24, 48 and 72 hrs. was significantly higher than control at P<0.05. Also , mitotic index test also was used , the result that was obtained for these three types of antigens with mean value (26.96%, 22.8% and 32.11%) respectively ,while the control group with mean value (13.33%) . In addition, the radial immunodiffusion (RID) method was used to detect the immunodiffusion level of the immunoglobulins in serum samples, the results showed that the immunodiffusion level of immunoglobulins with mean values (17, 19.8 and 19.4) mm respectively, in comparison with control group at P<0.05 . The concentration level of the CD4 and CD8 in the serum samples was determined by enzyme linked immunosorbent assay (ELISA) method, the concentration level of CD4 molecule with mean values (47.49, 43.82 and 63.61) ng/ml respectively while the control group with mean value (26.59) ng/ml. And the CD8 molecule with mean values (2.79, 3.21 and 6.08) ng/ml respectively, while the control group with mean value (1.6) ng/ml . Histopathological study showed that there were no pathological lesions in rabbits groups immunized with different types of antigens . The liver showed inflammatory cells infiltration in the portal area and spotty lobular inflammation in toxoid alone and mix antigen groups whereas in AgNPs alone group showed only inflammatory cells infiltration in the portal area . The spleen showed reactive germinal center in white pulp for toxoid alone , AgNPs alone and mix antigen groups

دراسة فسلجية وكيموحيوية ونسيجية لمرضى ابيضاض الدم اللمفاوي الحاد غير الوراثي في محافظة كربلاء المقدسة

Author name: همام علي هادي
Supervisor name: ستار جاسم حتروش | رشا حسن جاسم
General topic: Biology
Specific topic: Zoology - Physiology
Degree: Doctorate
Language: Arabic
University location: Karbala
First pages:
Abstract: The rate of cancer infection has increased with a clear rise in the incidence of leukemia in Iraq's common diseases in 2017, which was the seventh place in 1989, as follows. Generally, about 10 among 100,000 people are infected with leukemia, male have the biggest ratio between the patients with leukemia, finally, Acute Lymphocytic Leukemia is increased at patients with 3 to 7 years old. During the period from the beginning of February 2016 to the first week of 2017 in the Center of Oncology of Hematology in the medical city of Hussein in Karbala', 30 patients with acute lymphocytic leukemia their age were ranged from 2 - 13 years old (19 male and 11 female), without familiar history with cancerous disease. The samples were collected before treatment with chemotherapy, and they were follow - up during the stages of treatment. The control group included 30 samples ranging from 1 - 13 years (18 males and 12 females) Numerous biochemical and histological parameters were assessed in the samples of study patients before and after receiving treatment and the recorded results were compared to the control group. The results of the study showed significant results (p<0.05) at the levels of CLEC4E, MDA, Ceruloplasmin Oxidase Concentration and EOP in the group of animals with acute lymphocytic leukemia before receiving treatment compared to healthy individuals. The current study showed decreased concentrations of CLEC4E, Ceruloplasmin Oxidase Concentration, Ceruloplasmin Oxidase Concentration and Ceruloplasmin Oxidase Activity, while EOP levels increased after chemotherapy, while MDA remained at an unrecognized level at diagnosis. The study showed significant differences (p=0.000) when elevating a number of blood parameters, WBC level and Ferritin concentration. When the stud recorded statistically significant rise in the level of platelets and Hb concentration before chemotherapy. At diagnosis, the present study showed a significant difference (p<0.05) in Fe, Cu, Zn and Ni levels in the patients group, before treatment. However, statistical analysis of trace elements in the sera of patients after treatment didn’t show significant differ than their levels at diagnosis. The study the effect of acute lymphocytic leukemia in the function of kidney showed significant increase in the levels of ANP and Urea in sera of patient samples as well as levels of urinary microalbumin comparison to control group levels, contrast to that, Creatinin levels showed significant (p=0.001) decrease in serum of patients group. Comparative study showed that there were statistically significant differences (p=0.000) of ANP, Urea, Creatinin, Uric Acid, and Microalbumin in patients with acute lymphocytic leukemia after receiving chemotherapy compared to healthy peers.In order to evaluate liver function, GOT and GPT levels as well as STP levels in patients with leukemia were observed within the range recorded in healthy individuals. On the other hand, the current study showed a rise in the levels of ALP enzyme in patients exceeded twice that recorded in the group of healthy children. After receiving chemotherapy, the study showed a significant increase (p=0.000) for GOT, GPT and ALP levels for the group of patients compared to healthy individuals, a significant decrease (p=0.000) of STP levels in the group of patients compared to healthy patients. The study identified many differences between patients and healthy males as well as between infected and healthy females at the level of implicit comparisons between the two groups at diagnosis and after treatment, as shown in the table below which summarizes the relationship between patients of both ganders with their healthy peers. The current study showed statistically significant statistically associations, the clearest among them was recorded when CLEC4E correlated to EOP, which were positive in 100% of the study samples at diagnosis and negative in the same samples after receiving chemotherapy. The results of the study showed that 80% of children with acute lymphocytic leukemia were with type 1, L1, 17% of type 2, L2 and 3% of the third type L3, the promise of the first type has a good outcome of the disease as the response is good for treatment and go through recovery after treatment.

تاثير عقار الديكساميثازون في غرس الكيس الارومي وغضروف وعظم الجنين وبعض المعايير الكيموحيوية في مصل دم الجرذان الحوامل == Effect of Dexamethasone on blastocyst implantation, Cartilage ,bone embryo and some serum biochemical parameters in pregnant rats

Author name: علاء حسين مهدي الصافي
Supervisor name: اكرم يوسف ياسر
General topic: Biology
Specific topic: Zoology
Degree: Doctorate
Language: Arabic
University location: Karbala
First pages:
Abstract: Dexamethasone (DX) is considered one of the steroidal drugs which have varieties of clinical application in medicine for treatment of many different cases. The present study was aimed to know the effect of DX on the implantation of blastocyst during the days 7 and ten of pregnancy, and the process of development of cartilage and bones in the fetuses of albino rats during the days 15 and 20 of pregnancy. In addition to that some physiological parameters aimed to be elucidated in the pregnant rats. The study was conducted in the department of Biology \College of Education for Pure Sciences/ University of Karbala in the period of April, 2016 to May 2017. Ninety four albino rats have been used, among them 10 male rats were used for matting with 84 female rats .The females were divided into three groups, with 28 rats for each group . The first control group was injected with physiological normal saline (0.9%) intraperitoneally. The other two groups were received daily injection via the same route with 0.2 and 0.4 of DX \ 250 gm. of body weight respectively. Each group was further subdivided into four subgroups with seven pregnant female rats for each one. The pregnant rats of each subgroup were sacrificed on the following days : 7,10,15, and 20 respectively The subgroups of the latter two days were used to study the development of the cartilage and bones. Half of the embryos on day 20 of pregnancy from the control and treated groups were used for histological sectioning; while the other half were used to stain the embryonic skeleton according to double staining technique of Whitaker and Dix . All the collected samples which include the implantation sites from the pregnant uteri at days 7 and 10, together with whole embryos from days 15 and 20 of pregnancy, were put in two types of fixatives : 10% formalin and Boun's solution. The collected samples then processed according to the traditional methods of paraffin embedding to be cut into sections of five µm thicknesses. The sections were stained by haemotoxylin and eosin (H&E); one step trichrome; periodic acid Schiff's (PAS) with and without diastase; Alcian blue at pH 1.0 and 2.5. Blood samples from pregnant rats were collected on days 7,10,15,and 20 of pregnancy to check for the following biochemical parameters : concentration of calcium ,phosphate and potassium ions ;alkaline phosphatase ,and acid phosphatase enzymes; and estimation of parathyroid and calcitonin hormones. The results of the H&E stained section of pregnant sites of both the control and treated groups have shown that blastocyst was implanted in the antimesometrial side of the uterus. Most of this side of the uterus has become decidualized tissue, where four zones could be identified : the primary decidual zone; secondary decidual zone ;implantation site; and undifferentiated decidual basal zone. On day 10 of pregnancy the embryos have shifted their position from the antimesometrial side to the mesometrial side of the uterus. The decidual tissue has grown wider and included most of stromal cells of the endometrium. The changing of the position of the embryos at day 10 is important for their survival because they will become nearer to the main blood supply to uterus which are running in the mesometrium. The results of the one step trichrome stained sections from both the control and treated groups have shown clear distribution of collagen fibers in the decidual tissues at days 7 and 10 of pregnancy, which gave an indication of the success of pregnancy up to these stages. The primary decidual zone was devoid of collagen fibers but they are evident in the secondary decidual zone. At day 10 of pregnancy the collagen fibers were more in evidence especially at the mesometrial side of the uterus. The importance of collagen fibers was to give support to the blood vessels supplying the placenta which are coursing through the mesometrium. Positive stain has been revealed in PAS reaction in decidual tissue on day seven of pregnancy without diastase, but it was negative with diastase. No reaction ,in the decidual tissue, with and without diastase was noticed at day ten of pregnancy. With Alcian blue pH 1.0 no reaction was noticed in the decidual tissue of both control and treated groups at days seven and ten of pregnancy. On the other hand positive reaction has come out at pH 2.5. The reaction at that pH was more prominent at the antimesometrial decidual tissue. But it was only depicted in the wall of blood sinusoid of the mesometrial decidual tissue. Tongue like extensions of trophoblasts was noticed to be extending from the recently implanted embryo toward the endometrium, at day seven of pregnancy of both the control and treated group. The trophoblasts were pushing themselves in the direction of mesometrial decidual tissue in order to reach and settle nearer and in the wall of the blood sinusoids of that area. The invasion trophoblasts destination was to reach to the spiral arteries supplying the labyrinthine placenta in the rats. At the 15th day of gestation there was no significant change in the cartilage model in the posterior limbs of the two treatment groups from the control group. The important signal indicated by the present study was observation of cartilaginous cell necrosis, hyperplasia and inflammatory cell infiltration, At the age of near the end of pregnancy in the treatment groups, many of the effects on the bone tissue, which are the existence of a vacuum around the bone cells and the infiltration of inflammatory cells in addition to bone erosion and arthritis and the reduction of cartilage and irregularity of medicine Surface area, hyperlipidemias and leavicular necrosis. Bone marrow squeaks in the control group and the first dose group of dexamethasone were found to be more extensive than the second treatment group. The bones of control group embryos stained with alizarin red has acquired much more red coloration than the treated group embryos, which indicated a slowdown of ossification in their bones compared with control group, Showed that the length of the skull, spine, forelimbs and hind limbs of the fetal fetus at the age of 20 days of gestation of from the treatment groups has decreased for length in the control group but the decline was not significantly level (P <0.05) . The calcium, phosphate and potassium ions concentration was low in the blood serum of treated group ( P< 0.05) during the whole period studied. However the phosphate ions was low in the control group .For the alkaline phosphatase level, it was significantly low ( P< 0.05) in the treated groups compare with the control. On the other hand the level of the acid phosphatase was high in the treated group ( P< 0.05). The concentration of both the parathyroid and calcitonin hormones was significantly higher ( P< 0.05) in the treated groups compared with control. In conclusion, the present study has revealed that DX treatment showed no interference with the process of implantation during the days seven and ten, and with chondrogenesis on day fifteen of pregnancy. While the effect on cartilage formation on the fifteenth day and bone on the twentieth day of pregnancy.
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