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دراسة فولتامترية وثرموداينميكية للترابطات الجزيئية للالبومين مع الادوية التي تستخدم لعلاج حالات التناذر الكلوي والوذمة - تطبيقات سريرية لتقدير الالبومين والادوية في ادرار ومصل دم الانسان == VOLTAMMETRIC , THERMODYNAMIC STUDY OF MOLECULAR BINDING OF ALBUMIN WITH NEPHROTICESYNDROME AND OEDEMA DRUGS - CLINICAL APPLICATION FOR THE DETERMINATION OF ALBUMIN , DRUGS IN HUMAN SERUM AND URINE

Author name: محمد محمد امين عبد الله الامام
Supervisor name: سعد الله توفيق سليمان الراوجي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: Arabic
University location: Mosul
First pages:
Abstract: تضمن البحث دراسة الخواص الفولتامترية للالبومين ولعدد من الادوية بطرائق مباشرة وغير مباشرة باستخدام تقنية فولتامتري الموجة المربعة (SWV) وقد قسم البحث الى ثمانية اجزاء رئيسة وكما ياتي : الجزء الاول : دراسة الخواص الفولتامترية للالبومين البقري (B.A.) النقي بطريقة مباشرة في المحلول المائي وقد اظهرت المادة موجة اختزال واضحة ورئيسة عند الجهد (0.56 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) ، وتمت دراسة المنحني القياسي للالبومين في محلول الفوسفات المنظم ذي الرقم الهيدروجيني (pH=7) وكانت العلاقة خطية ضمن مدى التراكيز ](7.9×8 - 10) - (1.185×6 - 10)[ مولاري وكانت قيمة معامل الارتباط (0.9945). كذلك تمت دراسة المنحنى القياسي للالبومين بوجود مصل الدم البشري والادرار. وقد تم استخدام طريقة الاضافة القياسية (Standard Addition) بنجاح كبير في حساب تركيز الالبومين في عينات مصل الدم للاصحاء والمرضى والادرار للمرضى فقط . الجزء الثاني : تم تقدير الالبومين بطريقة غير مباشرة باستخدام الكاشف البروموكريسول الاخضر في المحلول المائي وقد اظهر الكاشف ثلاث موجات اختزال عند الموقع (0.706 - ) فولت و(0.882 - ) فولت و(1.214 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) ، وتم تقدير الالبومين بهذه الطريقة حيث يحصل انخفاض منتظم لتيار الانتشار لموجة الكاشف يتناسب مع كمية الالبومين المضافة وقد تم تطبيق الطريقة لتقدير الالبومين في مصل الدم والادرار . الجزء الثالث : تم تقدير الالبومين بطريقة غير مباشرة باستخدام الكاشف البروموبايروكالول الاحمر في المحلول المائي وقد اظهر الكاشف موجة اختزال رئيسية عند الجهد (1.04 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) . وتم تقدير الالبومين بهذه الطريقة حيث يحصل انخفاض منتظم لتيار الانتشار لموجة الكاشف يتناسب مع كمية الالبومين المضافة وقد تم تطبيق الطريقة بنجاح لتقدير الالبومين في مصل الدم والادرار . الجزء الرابع : دراسة الخواص الفولتامترية للبريدنيزولون (Prednisolone) النقي بطريقة مباشرة في المحلول المائي وقد اظهرت المادة موجتي اختزال عند الجهد (1.22 - ) فولت و(1.45 - ) فولت ضمن قطب المرجع (Ag/AgCl/SatKCl) ، وتمت دراسة المنحنى القياسي للدواء في محلول الفوسفات المنظم ذي الرقم الهيدروجيني (pH=7) وكانت العلاقة خطية ضمن مدى التركيز ](0.398×6 - 10) - (3.846×6 - 10)[ مولاري وكانت قيمة معامل الارتباط (0.9981) و(0.9958) للموجة الاولى والثانية على التوالي . كذلك تمت دراسة المنحنى القياسي للدواء بوجود مصل الدم البشري والادرار. وقد تم استخدم طريقة الاضافة القياسية في حساب تراكيز الدواء في عينات مصل الدم والادرار للمرضى المتناولين لهذا الدواء . وقد تم تطبيق الطريقة بنجاح كبير لتقدير البريدنيزولون في الاقراص بالمحلول المائي . كما تم دراسة الترابطات الجزيئية للبريدنيزولون مع الالبومين وتم حساب ثابت الارتباط (K) ، ومن ثم تطبيق معادلة (فانت هوف) لحساب القيم الثرموداينميكية (ΔG,ΔS,ΔH) . وتم استنتاج التداخل من نوع ضعيف (ايون - ايون).الجزء الخامس : دراسة الخواص الفولتامترية للبيتاميثازون (Betamethasone) النقي بطريقة مباشرة في المحلول المائي وقد اظهرت المادة موجتي اختزال عند الجهد (1.136 - ) فولت و(1.455 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) ، وتمت دراسة المنحنى القياسي للدواء في محلول الفوسفات المنظم ذي الرقم الهيدروجيني (pH=7) وكانت العلاقة خطية ضمن التركيز ](1.99×7 - 10) - (6.01×6 - 10)[ مولاري وكانت قيمة معامل الارتباط (0.9969) للموجة الاولى و(0.9905) للموجة الثانية . وكذلك تمت دراسة المنحنى القياسي للدواء بوجود مصل الدم البشري والادرار. وقد تم استخدام طريقة الاضافة القياسية في حساب تراكيز الدواء في عينات مصل الدم والادرار للمرضى المتناولين لهذا الدواء . كما تم تطبيق الطريقة بنجاح كبير لتقدير البيتاميثازون في الاقراص بالمحلول المائي . واخيرا تم دراسة الترابطات الجزيئية للبيتاميثازون مع الالبومين وتم حساب ثابت الارتباط (K) وتقديره في درجات حرارية مختلفة وكذلك تطبيق معادلة (فانت هوف) ) لحساب القيم الثرموداينميكية (ΔG,ΔS,ΔH) ومنها تم استنتاج ان عملية التداخل من نوع ضعيف (ايون - ايون) .الجزء السادس : دراسة الخواص الفولتامترية للنيتروبروسيد الصوديوم (Sodium Nitroprusside) النقي بطريقة مباشرة في المحلول المائي وقد اظهرت المادة موجة اختزال واضحة عند الجهد (0.592 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) ، وتمت دراسة المنحنى القياسي للدواء في محلول الفوسفات المنظم ذي الرقم الهيدروجيني (pH=7) وكانت العلاقة خطية ضمن مدى التراكيز ](0.398×6 - 10) - (8.424×6 - 10)[ مولاري وكانت قيمة معامل الارتباط (0.9991) . كذلك تمت دراسة الترابطات الجزيئية للالبومين مع النيتروبروسيد الصوديوم بنجاح وتم تقدير قيمة ثابت الارتباط (K) وتقديره في درجات حرارية مختلفة ، وكذلك تطبيق معادلة (فانت هوف) ) لحساب القيم الثرموداينميكية (ΔG,ΔS,ΔH) ومنها تم استنتاج ان عملية التداخل من نوع ضعيف (ايون - ايون) .الجزء السابع : دراسة الخواص الفولتامترية للثيوفلين (Theophylline) النقي بطريقة مباشرة في المحلول المائي وقد اظهرت المادة موجة اختزال عند الجهد (0.315 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) ، وتمت دراسة المنحنى القياسي للدواء في محلول الفوسفات المنظم ذي الرقم الهيدروجيني (pH=7) وكانت العلاقة خطية ضمن مدى التراكيز ](0.793×6 - 10) - (3.66×6 - 10)[ مولاري وكانت قيمة معامل الارتباط (0.9965) . كذلك تمت دراسة المنحنى القياسي للدواء بوجود مصل الدم البشري . وتم تطبيق طريقة الاضافة القياسية لتقدير تركيز الدواء في مصل دم المرضى الذين يتناولون هذا الدواء . وقد تم تطبيق الطريقة بنجاح كبير لتقدير الثيوفلين في الاقراص بالمحلول المائي وفي شراب الكانافلين . واخيرا تم دراسة الترابطات الجزيئية للالبومين مع الثيوفلين وايجاد قيمة ثابت الارتباط (K) وتقديره في درجات حرارية مختلفة ، وكذلك تطبيق معادلة (فانت هوف) لحساب القيم الثرموداينميكية (ΔG,ΔS,ΔH) ومنها تم اثبات ان عملية الارتباط من نوع ضعيف (ايون - ايون) .الجزء الثامن : تمت دراسة الخواص الفولتامترية للامينوفلين (Aminophylline) النقي بطريقة مباشرة في المحلول المائي وقد اظهرت المادة موجة اختزال عند الجهد (0.622 - ) فولت ضد قطب المرجع (Ag/AgCl/SatKCl) ، وتمت دراسة المنحنى القياسي للدواء في محلول (NH3/NH4Cl) المنظم ذي الرقم الهيدروجيني (pH=10) وكانت العلاقة خطية ضمن مدى التراكيز ](1.093×4 - 10) - (23.07×4 - 10)[ مولاري وكانت قيمة معامل الارتباط (0.9903) . كذلك تمت دراسة المنحنى القياسي للدواء بوجود الادرار . وتم تطبيق طريقة الاضافة القياسية لتقدير تركيز الدواء في ادرار المرضى الذين يتناولون هذا الدواء . وقد تم تطبيق الطريقة بنجاح كبير لتقدير الامينوفلين في الاقراص . | The research includes empoyment of Square Wave Voltammatry technique to study the properties of the Albumin and a number of drugs in direct and indirect methods. The research includes eight basic parts .The First part : studies the Voltammetric properties of the Pure Albumin in a direct method in the a quous solution . The material has revealed a clear and major reduction potential at ( - 0.56) Volt against the reference electrode (Ag/AgCl/SatKC) . The calibration curve in thr (pH=7) (Phosphate buffer) . The relationship is linear within arange of consentration at [ (7.9×8 - 10) - (1.185×6 - 10)]Molar. The correlation coeffition (0.9945). Also the calibration curve has studies with human serum and urine . The way of standard addition is used successfully to determination the Albumin consentration in serum and urine of the patients. The Seconed part : The Albumin has been checked in an indirect way by using the bromo cresol green reagent in the aquous solution . The revealer has revealed three reduction peaks in the place ( - 0.706) Volt , ( - 0.882)Volt and ( - 1.214) Volt against the reference electrode (Ag/AgCl/SatKC) . The Albumin has been determined by this way , we notice that there is decrease in diffusion current of the Reagent peaks with quantity of the Albumin added . The method has been applied to examine the Albumin in the serum and urine of the patient .The Third part : The Albumin has been checked in an indirect method using the revealer of Bromo Pyrogallol Redbromo in the aquous solution . The revealer has revealed main reduction peaks in the place ( - 1.04) Volt against the reference electrode (Ag/AgCl/SatKC) . The Albumin has been determined by this way during the decrease in diffusion current of the revealer with the quantity of the Albumin added . The method has been applied to examine the Albumin concentration in the serum and urine of the patient .The Fourth part : The study of Voltammetric properties of Pure Prdnisolone in a direct method in the aquous solution . The substance has revealed a clear and major two reduction peaks at potential ( - 1.22) Volt and ( - 1.45) Volt against the reference electrode (Ag/AgCl/SatKC) . The calibration curve of the prednisolone in the Phosphate Buffer (pH=7) has been studies . The relationship has been linear with in the scope of concentration [(0.398×6 - 10) - (3.846×6 - 10)] molar . The corelation coefficient is (0.9981) , (0.9958) for one and two peaks . Also the calibration curve has studies with human serum and urine . The way of standard addition is used successfully to determine the drug in serum and urine of the patients . The way has been a chiered successfully to determine the drug in tablets . Also the study of molecular binding of prednisolone with Albumin and calculate the constant binding (K) , through Vant haff equation to calculate thermodynamic variables . (ΔG,ΔS,ΔH) , we conclude the binding of (Ion - Ion) type .The Fifth part : The study of Voltammetric properties of Pure (Betamethasone) in a direct method in the aquous solution . The substance has revealed a clear and major two reduction peaks at potential ( - 1.136) Volt and ( - 1.455) Volt against the reference electrode (Ag/AgCl/SatKC) . The calibration curve of the Betamethasone in the Phosphate Buffer (pH=7) has been studies . The relationship has been linear with in the scope of concentration [(6.01×6 - 10) - (1.99×7 - 10)] molar . The corelation coefficient is (0.9969) , (0.9905) for one and two peaks . Also the calibration curve has studies with human serum and urine . The way of standard addition is used successfully to determine the drug in serum and urine of the patients . The way has been a chiered successfully to determine the drug in tablets . Also the study of molecular binding of Betamethasone with Albumin and calculate the constant binding (K) , through Vant haff equation to calculate thermodynamic variables . (ΔG,ΔS,ΔH) , we conclude the binding of (Ion - Ion) type .Sixth part : The study of Voltammetric properties of Pure (Sodium Nitroprusside) in a direct method in the aquous solution . The substance has revealed a clear and major reduction peaks at potential ( - 0.592) Volt against the reference electrode (Ag/AgCl/SatKC) . The calibration curve of the Sodium Nitroprusside in the Phosphate Buffer (pH=7) has been studies . The relationship has been linear with in the scope of concentration [(8.424×6 - 10) - (0.398×6 - 10)] molar . The corelation coefficient is (0.9991) . Also the study of molecular binding of Sodium Nitroprusside with Albumin and calculate the constant binding (K) , through Vant haff equation to calculate thermodynamic variables . (ΔG,ΔS,ΔH) , we conclude the binding of (Ion - Ion) type .The Seventh part : The study of Voltammetric properties of Pure (Theophylline) in a direct method in the aquous solution . The substance has revealed a clear and major reduction peaks at potential ( - 0.315) Volt against the reference electrode (Ag/AgCl/SatKC) . The calibration curve of the Theophylline in the Phosphate Buffer (pH=7) has been studies . The relationship has been linear with in the scope of concentration [(3.66×6 - 10) - (0.793×6 - 10)] molar . The corelation coefficient is (0.9965) . Also the calibration curve has studies with human serum. The way of standard addition is used successfully to determine the drug in serum of the patients . The way has been a chiered successfully to determine the drug in tablets and syrups . Also the study of molecular binding of Theophylline with Albumin and calculate the constant binding (K) , through Vant haff equation to calculate thermodynamic variables . (ΔG,ΔS,ΔH) , we conclude the binding of (Ion - Ion) type .Eighrth part : The study of Voltammetric properties of Pure (Aminophylline) in a direct method in the aquous solution . The substance has revealed a clear and major or mean reduction peaks at potential ( - 0.622) Volt against the reference electrode (Ag/AgCl/SatKC) . The calibration curve of the Aminophylline in the (NH3/NH4Cl) Buffer (pH=10) has been studies . The relationship has been linear with in the scope of concentration [(23.07×4 - 10) - (1.093×4 - 10)] molar . The corelation coefficient is (0.9903). Also the calibration curve has studies with urine . The way of standard addition is used successfully to determine the drug in urine of the patients . The way has been a chiered successfully to determine the drug in tablets .

دراسة بعض الخواص الفيزيائية والميكانيكية للمتراكبات البوليمرية الجديدة المحضرة من الستايرين بيوتادين == Study of Some Physical and Mechanical Properties of New Polymeric Composition from prepared SBR

Author name: حيدر عبد الواحد مهدي
Supervisor name: عامر موسى جودة الشمري
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:
Abstract: ان الاهمية المتزايدة لاستعمال المتراكبات البوليمرية جاءت نتيجة التطور الصناعي التكنولوجي الكبير الذي يشهده العالم بوصفة بديلا عن المواد الهندسية التقليدية التي ساد استخدامها في الصناعة لذا فان الدراسة الحالية تهدف الى تحضير متراكبات بوليمرية ذات مواصفات ميكانيكية جيدة من مادة الستايرين بيوتاداين مع مالئات من السيليكا والكاولين العراقي بنسب وزنية مختلفة (1%,5.2 %,5%,5.7%,10%,5.12%,15%) ان اضافة السيليكا والكاولين العراقي كان الهدف منة تحسين الخواص الفيزيائية والميكانيكية وكذلك خواص الفلكنة لمطاط الستايرين بيوتاداين اذ تم قياس خواص الشد(الاستطالة ,المرونة) وكذلك الصلابة والكثافة النسبية ومعدل سرعة الفلكنة والاحتكاك الخارجي للاطار. اظهرت النتائج ان جميع الصفات الفيزيائية والميكانيكية وكذلك خواص الفلكنة قد تحسنت بنسب عالية عند زيادة النسب الوزنية للمالئات وان افضل نسبة وزنية لتحسين الخواص هي (5.7%) حيث بلغت قيمة الشد عند هذة النسبة (16.81Mpa) عند اضافة السيليكا و(19.97Mpa)عند اضافة الكاولين بينما كانت (8.69Mpa) بدون اي اضافة, الاستطالة (441%) عند اضافة السيليكا و(417.078%) عند اضافة الكاولين, المرونة ((9.5Mpa عند اضافة السيلكيا و(14.12 Mpa)عند اضافة الكاولين بينما كانت ((7.69 Mpa بدون اي اضافة , الصلابة (68 IRHD) عند اضافة السيليكا و(65 IRHD) عند اضافة الكاولين بينما كانت (57 IRHD) بدون اي اضافة, معدل سرعة الفلكنة (74.07min (للسيليكا و(54.34min) للكاولين , الكثافة النسبية (1.156) عند اضافة السيليكا و(1.183)عند اضافة الكاولين بينما كانت (1.133) بدون اي اضافة اما للاحتكاك الخارجي للاطار (0.18 gm) عند اضافة السيليكا و(0.54 gm) عند اضافة الكاولين بينما كانت (0.75 gm) بدون اي اضافة,اما الجانب الاخر فقد تم دراسة الخواص الفيزيائية والميكانيكة وكذلك خواص الفلكنة ولكن هذة المرة تم مزج نسب وزنية مختلفة من السيليكا والكاولين وبينت نتائج المزج ايضا تحسين الخواص المذكورة اعلاه, | The important increasing for using polymeric composites came from result of industrial large to chronology development which it was seeing in world and sbstitute from traditional engineering materials which used in industry. the present research aim to preparation of new polymeric composites with good mechanical properties to Substance Styrene - Butadiene Rubber (SBR) with filler Silica and Iraqi Kaolin with different perceentage (1%,2.5%, 5%,7.5%, 10%,12.5%,15%).Addition of Silica and Iraqi Kaolin aim to improvement physical and mechanical properties also Cure characteristics to Substance Styrene - Butadiene Rubber (SBR) as it was measured tensile properties (tensile strength, elongation at break and modulus), also Hardness, Specific gravity ,Cure rate index and abrasion. The result had shown all physical and mechanical properties also Cure characteristics by improved high with increase of percentage of filler. The best ratio by weight to improve properties (7.5%). As the value of tensile strength(16.81 Mpa) when addition Silica and (19.97 Mpa) when addition Kaolin While the (8.69 Mpa) with any addition, elongation (441%) when addition Silica and (417.078%) when addition Kaolin, Modulus (9.5 Mpa) when addition Silica and (14.12 Mpa) when addition Kaolin While the (7.69 Mpa) with any addition , hardness (68 IRHD) when addition Silica and (65 IRHD) when addition Kaolin While the (57 IRHD) with any addition, Cure rate index (74.07 mint) when addition Silica and (54.34 mint) when addition Kaolin, specific gravity (1.156) when addition Silica and (1.183) when addition Kaolin While the (1.133) with any addition ,abrasion (0.18 gm) when addition Silica and (0.54 gm) when addition Kaolin While the (0.75 gm) with any additon. On the other hand Study the physical and mechanical properties also cure characteristics but this time was mix different percentage from Silica & Kaolin the results of blending increase properties the above - mentioned.

ازالة صبغات الثيازين باستخدام تقنية الموجات فوق الصوتية وبعض طرائق الاكسدة المتقدمة == Removal of Thaizine dyes by using sonolysis Technology and Some Advanced Oxidation Processes

Author name: الاء طالب حمزة
Supervisor name: حسن عباس حبيب
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Qadisiyah
First pages:
Abstract: تناول البحث الحالي استعمال طرائق الاكسدة المتقدمة Advanced Oxidation Processes (AOP,S) المتمثلة ﺑ تقنية الموجات فوق الصوتية (US) والموجات فوق الصوتية مع الاشعة فوق البنفسجية (US/UV) والموجات فوق الصوتية والاوزون (US/O3) . لغرض تجزئة اصباغ الازور (AzureC, AzureB, AzureA) وازالة الوانها كما وتضمنت هذه الدراسة دراسة تاثير تركيز الصبغة الابتدائي, ودرجة الحرارة , وpH المحلول , وشدة الضوء المستعمل وسرعة الغاز على عملية تجزئة هذه الصبغات, بالاضافة الى ذلك تم استعمال طريقتي الاكسدة الضوئية المتمثلة ﺑ الاشعة فوق البنفسجية والاوزون (UV/O3) وتقنية الموجات فوق الصوتية والاشعة فوق البنفسجية والاوزون (US/UV/O3) وبظروف مثلى متمثلة في اوطا تركيز واعلى درجة حرارة وpH وشدة للضوء وسرعة للغاز والمقارنة بينها وبين الطرائق السابقة في كفاءة الازالة للصبغات. تم اجراء التجارب جميعها باستعمال جهاز مولد الموجات فوق الصوتية(Power Sonic LUC - 410) وتحققت التجزئة التامة في فترة زمنية قصيرة نسبيا (60 min) من التشعيع ولوحظ ان اسرع ازالة للون تمت في pH=8)) اي ودرجة حرارة (35oC) . كما لوحظ ان اﻔﺿل النتائج تم الحصول عليها باستخدام تقنية الموجات فوق الصوتية والاوزون (US/O3) في فترة (60 min) اما بالنسبة للطرائق التي اجريت لاحقا تبين ان اعلى نسبة ازالة تم الحصول عليها باسخدام طريقة (UV/O3) في فترة (15 min) اما بالنسبة لطريقة (US/UV/O3) كانت اعلى نسبة ازالة في (10 min) كما بينت النتائج ان سرعة الازالة تزداد بزيادة pH , وشدة الضوء المستعمل , وسرعة الهواء , ووجد ان نسبة الازالة تزداد بزيادة درجة الحرارة التي تسبب خفض طاقة التنشيط وكانت قيم طاقة التنشيط لعملية الازالة للصبغات (AzureC AzureB, AzureA) حسب الطرائق المذكورة انفا كالاتي , (16.7,15.3,16 KJ.mol - 1) على التوالي عند التشعيع بالموجات فوق الصوتية و(15,14.2,14.8 KJ.mol - 1) عند التشعيع بالموجات فوق الصوتية والاشعة فوق البنفسجية و(14,13.5,13.8 KJ.mol - 1 )عند التشعيع بالموجات فوق الصوتية والاوزون. كما اوضحت النتائج التي تم الحصول عليها ان سرعة الازالة تتبع حركيات المرتبة الاولى الكاذبة باستخدام الطرائق المذكورة انفا. | This research investigate of the efficiency of advanced oxidation processes (AOP,S), ultrasound alone (US) , ultrasound combined with ultraviolet (US/UV) and ultrasound combined with ozone (US/O3) for decolorizing of textile dyes (Azure A, Azure B, Azure C) in aqueous solution . The effect of dye concentration, temperature, pH, light intensity and rate flow gas on the removal process of dyes was also investigated. A comparative study with the above methods was also performed by using (UV/O3) and (US/UV/O3) in optimize process conditions are : lower concentration, higher temperature ,pH, light intensity, and rate flow gas to treat three Azure dyes. All experiments has been done be using ultrasonic reactor technology (Ultrasonic LUC - 410). Complete Dyes degradation has been achieved in a somewhat short period (60 min), and the maximum removal of color occurred at (pH=8) and temperature (35oC). The maximum removal of dye occurred by using ultrasound in combination with ozone in (60 min), with respect to the other methods, the maximum percent removal of dyes by using(UV/O3) method in (15min), While the maximum removal occurred at (10 min) by using (US/UV/O3) method. The results have shown that the rate of removal increases with decrease initial dye concentration, and increases in pH, light intensity, gas flow rate, and temperature, the increase in temperature caused a decrease in activation energy. It noticed that activation energy values of dye in three methods are : (16, 15.3, 16.7 KJ.mol - 1) for (Azure A, Azure B, Azure C) respectively, in ultrasound method only, (14.8, 14.2, 15 KJ.mol - 1) for (Azure A, Azure B, Azure C) respectively, in ultrasound with ultraviolet method, and (13.8, 13.5, 14 KJ/mol - 1) for (Azure A, Azure B, Azure C) respectively, in ultrasound with ozone method. The results was also showed that the rate of removal followed pseudo first order kinetics by using the methods mentioned above.

تحضير مركبات عضوية جديدة ذات صفات بلورية سائلة == Preparing of New Organic Compounds With Liquid Crystalline Properties

Author name: محمود عبد الستار يحيى القزاز
Supervisor name: ابتسام خليفة جاسم
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: يهدف هذا العمل لدراسة امكانية طلاء سطوح بعض المعادن مثل الفولاذ المقاوم للصدا 316، الحديد الكربوني، النحاس، الالمنيوم والزنك، بالمواد النانوية لتحسين مقاومة التاكل وذلك باستخدام اثنين من التقنيات، الاولى بواسطة الطلاء بالالياف النانوية لمادة متعدد الانيلي | This work aims to study the possibility of coating the surfaces of some metals such as stainless steel 316, carbon steel, copper, aluminum, zinc, with nanomaterials to improve the corrosion resistance using two techniques, first by coating with polyaniline nanofiber using electropolymerization of aniline monomer and the second technique by TiO2 nanoparticles via sol - gel process starting from titanium isopropoxide. The work focused on getting thin and homogeneous layer to cover the entire surface of the metal and protect it from corrosion in artificial seawater solution (3.5% NaCl) at 293, 303, 313, and 323 K.Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), Energy dispersive x - ray (EDX), x - ray photoelectronic spectroscopy (XPS), and x - ray diffraction (XRD) were used to diagnose and describe the structure and morphology of the layers that cover the surface of the metals under investigation, and finally the corrosion parameters ;corrosion potential (Ecorr), corrosion current (Icorr), protection efficiency (PE%), polarization resistance (Rp) and the effect of temperature on the inhibition efficiency in the absence and presence of polyaniline (PANI) or TiO2 coating at temperature ranging from 293 to 323 K were obtained and expressed as; Ea , ?H*, ?S*, and ?G* of all samples were estimated from Tafel plots using potentiostatic technique.The SEM and AFM images of PANI films reflect nanofibers (diameter from 50 to 70 nm); the thicknesses were measured by special AFM scans. They showed values between )700 to 1564 nm(, which may be attributed to the differences in oxidation - reduction potentials of the metals. The XRD patterns of the deposited PANI showed duplicate broad scattering peaks around 2? of 20? and 25?.The AFM images of TiO2 nanoparticles deposited on specimens revealed that the layer was extremely smooth, the particles are small spherical and the average diameter between 26 and 38 nm.The shifts in Ecorr of the uncoated with comparison of the PANI or TiO2 coated samples were small for; S.S316, C.S, Cu, Al, and Zn which means that the anodic and cathodic reactions affected by the same extent.The Rp of the PANI and TiO2 coated substrate was always more than the uncoated ones that attributed to the weak conductivity of PANI and the semiconducting properties of the Titania. All coated metals with PANI or TiO2 exhibited good degree of corrosion protectiveness. For PANI the PE ranged between 56 and 92 % and the best results was achieved for Zn metal this may attributed to the high corrosion values of the bared Zn, while TiO2 coating showed PE at the range of 68 and 93% and the best was for Al metal. The protection efficiencies showed small changes by increasing the temperature but for TiO2 in some cases the PE somehow increased with increasing the temperature. The data showed that the thermodynamic activation functions (Ea and ?H*) of the corrosion of the coated samples are higher than those of the uncoated ones indicating more energy barrier. The entropy of activation ?S* for the uncoated and coated samples are always negative ,this indicates that the activated complex in the rate determining step represents an association rather than a dissociation step, the measured ?G* values takes positive values and showed almost small change with increasing temperature, indicating that the activated complex was not stable and the probability of its formation decreased somehow with rise in temperature and the ?G* values for coated samples reveal that in the activated corrosion complex becomes less stable as compared to the uncoated specimens.Single cyclic potentiostatic tests conducted at 293 K to follow up the pitting probabilities of each metal in seawater before and after coating. The I - V plots indicated that only SS316 and Aluminium specimens suffer from pitting corrosion and the two types of coating reduces the pitting area of the hysterias loop with pushing the pitting potentials for more positive values

تحضير وتشخيص المركبات الحلقية غير المتجانسة الجديدة والمشتقة من الجالكونات == Synthesis And Characterization of New Heterocyclic Compounds Derived From Chalcones

Author name: نبراس مظفر جميل
Supervisor name: جمبد هرمز توما | ضحى فاروق حسين
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: يتقصى البحث امكانية الحصول على طبقة طلاء رقيقة ومتجانسة لبوليمر البايرول على بعض السبائك مثل الفولاذ المقاوم للصدا 316 والفولاذ الكربوني بواسطة البلمرة الكهروكيميائية لمونمر البايرول ودراسة امكانية تحسين مقاومة التاكل في مختلف الاوساط البيئية مثل المياه ا | This research focuses on getting thin and homogeneous polypyrrole (PPy) layer on carbon steel (45) and stainless steel (316) alloys by electropolymeriztion procedure of pyrrole monomer, and study the possibility of improving the corrosion resistance in different medias; saline water (3.5% NaCl), acidic media (1M H2SO4) and basic media (1M NaOH) at different temperature of 293, 303, 313 and 323 K. The deposited PPy layer on samples under investigation were examined by Atomic Force Microscope (AFM), Scanning Electron Microscope (SEM), Visible and Ultraviolet Spectroscopy (UV - Vis), Fourier Transform Infrared Spectroscopy (FT - IR), Thermogravimetric Analysis (TGA) and X - Ray Diffraction (XRD).The corrosion parameters are including corrosion potential (Ecorr), corrosion current (icorr), protection efficiency (%PE), polarization resistance (Rp) and the effect of temperature on the inhibition efficiency in the absence and in the presence of PPy coating at temperature ranging from 293 to 323K were obtained and expressed as; Ea, ?H*, ?S*, and ?G* of all samples were estimated from Tafel plots using potentiostatic technique.The SEM and AFM images of PPy films revealed a nanofiber like structure; diameter from 20 to 120 nm, the thicknesses were measured by gravimetric and special AFM scans, they showed values between 1300 to 1450 nm. UV - Vis studies showed that the PPy films exhibit weaker absorption peak at 477 nm and stronger absorption peak at 906 nm and the XRD patterns of the deposited PPy show two peaks around 2? of (43o) and (50o).The shift in Ecorr of the uncoated and of the PPy coated samples are between ( - 600 to - 200 mV) and ( - 200 to 100mV) for CS and SS316 respectively.The protection effectiveness of all PPy coated specimens showed remarkable degree of enhancement, and the %PE ranged between (30 to 80%) for CS and (78 to 96%) for SS316 in all medias.The values of Ea and ?H* of the coated PPy metals are always higher than the uncoated ones which indicate more energy barrier. The negative entropy ?S* for the uncoated and coated samples indicates that the activated complex in the rate determining step represents an association rather than a dissociation step, the measured ?G* values takes positive values and showed almost small change with increasing temperature, indicating that the activated complex was not stable and the probability of its formation decreased somehow with rise in temperature and the ?G* values for coated samples reveal that in the activated corrosion complex becomes less stable as compared to the uncoated specimens.Single cyclic potentiodynamic tests conducted at 293 K to follow up the pitting probabilities of each alloy in all medias before and after coating, the I - V plots indicated that only SS316 in salty media specimens suffer from pitting corrosion and the PPy coating reduces the pitting area of the hysterias loop with pushing the pitting potentials for more positive values

التقدير الطيفي لبعض المركبات العضوية المعوضة والمستحضرات الصيدلانية من خلال الاكسدة بايون السيريوم الرباعي باستخدام المحلل الطيفي الدقيق للتحليل بالحقن الجرياني المستمر (Ayah 3S BGR x3 -3D solar cell) == Spectrophotometric Determination of Some Substituted Organic Compounds And Pharmaceuticals Formulation Via Their Oxidation With Ce(IV) Ion Using Ayah 3SBGRx3 - 3D Solar Cell CFIA Microphotometer

Author name: مالك حسين علي العلوش العامري
Supervisor name: نغم شاكر تركي العوادي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: English
University location: Baghdad
First pages:
Abstract: تم استخدام حسابات ميكانيك الكم التقريبية شبه التجريبية وفق نموذج الحساب PM3)) وحسابات ميكانيك الكم الاساسية التامة غير التقريبية وفق نظرية دوال الكثافة (DFT) وباسلوب B3LYP وعناصر قاعدة 6 - 311G لحساب جزيئة الفلرين التي امتلكت التماثل Ih مع وحدات بناءها (5 | Semi - empirical quantum mechanical methods (PM3) and Density Functional theory calculations (DFT/ B3LYP/ 6 - 311G) were executed to evaluate the fullerene molecule ,the internal coordinates (bond length and angles) and some physical and energetic properties.Calculations of the geometrical Parameters (bond lengths and bond angles), have shown that the (C=C) bond length is increased with increasing the size of the molecule that increased elasticity especially to fullerene to be like a ball. The (C - C) bond length is decreased with increasing the size of molecule, that means fullerene will be more stable than the other molecules.The energetic values (heat of formation) is found to be increased with the increasing of the size of molecule. The total energy is decreased with increasing size of molecule that means the stability will increase with the increasing of the size of unit construction of fullerene molecule , on the other hand , the energetic difference (E HOMO - LUMO) between the higher level of orbital and the lower level of orbital are decreased with the increasing of the size of molecule ' unit construction reaching to the fullerene molecule. So, this property will increase the significance of fullerene in the industrial and the electrical purposes.The vibrational modes frequencies with ( 3N - 6) whereas N is represented by number of molecule atoms which are evaluated with the absorption intensities of infrared frequencies. symmetrical and coordinated modes were discussed at the equilibrium geometric formation by using the programs MOPAC & Gaussian 05.It is worthy to say that it was not mentioned before that the complementary classification for the vibrated motion modes for such molecules , so our evaluations may considered unique. It is noted , as well , that CH stretching frequency has had fluctuations that means increasing and decreasing in the values of frequencies. In connected with the bending vibrated modes which taking place out of plane of the molecule are decreased with the increasing size of the unit constructions of molecule but it is increased only at the fullerene molecule. Conversely, the bending vibrated modes which are taken place in the plane of molecule are increased with the increasing the size of unit construction of molecule but are decreased at the fullerene molecule.The distribution of the electronic charges density on the atoms of unit construction of fullerene molecule were studied, the results shown the absence of the electronic charge on the atoms of Fullerene molecule and its concentrated at atoms of the outer circumferential edges C - Cc for the aromatic rings in its own unit construction. Semi - empirical methods (PM3) and Density Functional theory calculations (DFT/ B3LYP/ 6 - 311G) were carried out to evaluate the vibration frequencies and infra - red (IR) absorption intensities for equilibrium geometries of construction units of (6,0) zigzag (Mono (D6h), Di (D6d), Tri(D6h), Tetra (D6d)) ring layers SWCNTs and the internal coordinates ( bond length & angles ) at the equilibrium geometric formation symmetrically according to group theory were evaluated. The most important notes were axial bond length C - Ca which is decreased with the increasing of the tube length whether odd or even number of ring layers. The length of these mentioned axial bonds will be longer in the outer layers than the middle layers that means the increasing of stability of the tube with its length increasing , with the ability of replacing the external atoms of the tube because they are connected with longer and weaker bonds. The reverse was found with the circumferential bond lengths C - Cc was as they were increased with the increasing length of the tube whether the tube was odd or even in number of ring layers. Moreover , the lengths of these bonds are decreased in the middle side to the outer one for the odd and even ring layers. This will confirm the stability of the tube with its length increasing. The lengths of outer bonds C - H which are situated on the edges of the tube which were approximately fixed , with exception of the bond length of CH bonds in Mono ring layers which were longer because the large negative charge on carbon to which it is bonded and the large positive charge on it compared with the positive charge on hydrogen atoms of the multi - layers tubes. The heat of formation which was found to be increased with the increasing of the length of the tube , that means increasing of the stability and the aromatic properties , with the increasing of number of tube' layers. This property will increase the importance in the uses of these tubes for the industrial and electrical purposes as semi - conductors.The vibrational modes frequencies with 3N - 6 with the absorption intensities of infrared frequencies were evaluated and classified. These modes were discussed in symmetrical and coordinating manners at the equilibrium geometric formation, by using the programs of MOPAC and Gaussian 05 , with confirming on unavailability of bounded specification for such modes with 3N - 6 in the literature. We have a through our studies that the stretching vibration modes of symmetric and anti - symmetric Carbon - Carbon axial bond (C - Ca) increased with the increasing length of tube , and this will increase the physical properties for electrical conductivity with confirming on the significance of nanotube industrially. For the vibrational bending frequencies which are taking place in plane and out of plane of molecule surface as well as the vibrational stretching for odd number of ring layers (Mono and Tri) fluctuation will be happening in the relations , as all of them will be decreased with the increasing of tube ' length except (C - Caasym, C - Casym , ? CHsciss. , ? ringasym , ? ringsym and ? ringsym ) which be increased with the increasing the length of tube. The vibrational bending frequencies which are taking place in plane and out of plane of molecule surface for the even number of ring layers ( Di and Tetra layers ) will be decreased with the increasing of tube' length except (? CHsciss.) which is increased with the increasing of tube' length. Furthermore , all vibrational modes which are related to the puckering , breathing and bending movements of clockwise and anti - clockwise according to "group theory" were determined in accurate manner to which deformations are related , which are happened in the tubes , as a result of vibration, that may prevent the flow of electrons' movements and their transitions. The numerical values for the vibrational frequencies which are resulted from Semi - empirical methods (PM3) were acceptable in comparing with the strict calculations , hopping to achieve best values and to be close to the values obtained for the strict calculations (DFT) method to be suited with the basis and standards that are depended internationally. Some of these values were corrected by multiplied by constant scaling factors for such molecules. The results of scaling were good and very close to the experimental and calculated values.The distribution of charges' density on units of construction atoms of (6,0) zigzag nanotube SWCNTs also were studied. The results were consistent with the physical and experimental conductivity properties for such calculated tubes , as the intensity of the electronic charge was concentrated on the outer circumferential edges of atoms C - Cc for the aromatic molecules as well as for nanotubes with its disappearing form outer side towards the middle side of multi - ring layers ( Mono , Di , Tri and Tetra ).

تحضير وتشخيص الدقائق النانوية لاوكسيد النحاسوز بواسطة الكتروليتات مختلفة == Preparation And Characterization of Cuprous Oxide Nanoparticles By Different Electrolytic Media

Author name: حيدر خضير خطار
Supervisor name: فؤاد عبد الامير السعدي | سامي وحيد راضي الحسناوي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:
Abstract: في الواقع، لم تلقي عملية فصل واستخلاص الكميات الضئيلة من الادوية في العينات الحيوية وكذلك في المستحضرات الصيدلانية اهتماما واسعا وكبيرا باستعمال مايسمى الاستخلاص بنقطة الغيمة. وفي هذا الصدد، نعتقد ان العمل البحثي الحالي سوف يسهم في فتح افاق جديدة في تصم | The separation and extraction of trace amounts of medicaments in biological specimens, as well as in pharmaceutical formulations have not received much attention by using the so - called cloud - point extraction (CPE). In this context, we think that the present research work will contribute to opening new prospects in designing procedural steps and expands the applications of the cloud point extraction methodology in most important areas, including pharmaceutical sciences, forensic and environmental analyses. The present work concentrates on the developing of new eco - friendly procedures for determination of two selected antibiotic medicaments namely cirprofloxacin chloride (CIPRO) and norfloxacin (NOR) using iron (III) ion in human serums and pharmaceutical formulations, as well as the exploitation of these two drugs in chemical analysis as chelating agents for the detection of iron in pharmaceutical formulations via using cloud point extraction coupled with molecular spectrophometry. Generally, these methods implicate the use of a nonionic surfactant (Triton X - 114) as an extracting medium which entrap the hydrophobic colored complex formed between one of these drugs and iron (III) ion in acidic medium as a reaction system for designing the CPE procedures.This thesis includes three main chapters as follows;Chapter One summarizes some theoretical and practical principles of cloud point extraction (CPE) methods and then highlights the knowledge of the target analytes (CIPRO, NOR and iron) in term of their structures, pharmacological importance besides a concise chemical literature review for the estimation of these analytes by different analytical techniques. Chapter Two consists of an outline of instrumental techniques , general apparatus and chemicals used in the present work. The full analytical procedures for CPE which have been designed for the determination of the target analytes under study are made in this thesis.Chapter Three covers a detailed study for the discussion of the analytical data obtained throughout this work which can be summed up as follows;A. Formation of chelates between CIPRO or NOR and Fe(III) in acidic medium , where the drugs have individually been estimated in the resulting complex by spectrophotometry after the cloud point extraction at each respective ?max, and the use of developed method so that to determine any of the interested drug in human serum and pharmaceuticals. At first, the study was conducted to pinpoint the optimum conditions for the formation of complexes by CPE and the results were as follows; 1. The optimum experimental conditions for Fe - CIPRO and Fe - NOR complex for the determination of CIPRO and NOR respectively : H2SO4 concentration (5x10 - 4 M and 2.5x10 - 4M; Fe(III) concentration ( 6 ?g mL - 1 and 10 ?g mL - 1); Triton X - 114 amount ( 1%) for both drugs; temperature and time ( 75 °C at 25 min and 65 °C at 20 min).2. The achieved analytical figures of merit on applying the developed methods for CIPRO and NOR are : linear range (2.5 - 120 ?g mL - 1 ) for drugs, limit of detection (0.770 and 0.204 ?g mL - 1), Enrichment factor (143 and 280 fold), extraction efficiency (96.46 and 96.62%) and mean recovery percentage (98.89±0.87% and 98.95±1.09). 3. The newly established procedures have been applied for the determination of CIPRO and NOR in human blood serum and pharmaceuticals. For the determination of these medicaments in serum samples , the statistical paired t - test was used to test the significance of the proposed method comparing with the conventional UV - spectrophotometry, while in pharmaceuticals, the findings were compared statistically with quoted values that stated by the manufactures. B. Iron (III) ion was also determined in the pharmaceutical formulations based on the above reaction system in (A) via formation of yellow colored complexes with each medicament which extracted by micelles generated by CPE and subsequently detected spectrophotometrically at the same ?max of the above mentioned complexes. The optimum established conditions and the analytical data obtained could be summarized as follows : 1. The same optimum conditions were used in (A) except that the concentration of CIPRO or NOR here was of 7x10 - 5 M and Triton X - 114 amount of 0.6% in final solutions.2. The analytical figures of merit obtained on applying the developed methods for iron using CIPRO and NOR respectively; linear range (5 - 150 ng mL - 1); limit of detection (2.67 and 3.42 ng mL - 1); preconcentration factor (71 and 83 fold); mean recovery percentage (99.78±0.53% and 98.77±2.29); extraction efficiency (99 and 98.7%). 3. The effect of some additives of the pharmaceutical formulations was also studied and the iron determined in three selected formulations collected from local drugstores. The results were compared statistically with quoted values and shown not to be significant at 95% confidence level.

دراسة التاكل والحماية من التاكل لسبائك من حديد الفولاذ في ماء البحر باستخدام دقائق اوكسيد الزركونيوم وكربيد السليكون واوكسيد الالمنيوم النانوية == Corrosion And Corrosion Protection Studies of Carbon Steel Alloy In Seawater Using; Zirconia, Silicon Carbide And Alumina Nanoparticles

Author name: حيدر عبد الكريم يوسف
Supervisor name: خلود عبد صالح السعدي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Baghdad
First pages:
Abstract: يعتبر اوكسيد النحاسوز واحدا من المواد ذات الاستخدامات العلمية المتعددة الاغراض وذات الاهمية الصناعية الكبيرة ,ومنها استخدامه كمتحسس للغازات وفي العوامل المساعدة وكذلك في انتاج الواح الطاقة الشمسية ويدخل وبصورة كبيرة كمحطم للصبغات العضوية في مجال الكيمياء | Cuprous oxide (Cu2O) has been extensively studied because of its potential use in several electronic applications, which include solar cells and gas sensors. This Thesis is devoted to the synthesis, characterization of nano - structured cuprous oxide by using a simple electrochemical cell with a potassium chloride solution as an electrolyte, the electro cell contains a two high purity copper electrodes as a sheet form in different areas at varying sizes the area of the cathode was twice of the area of anode , the two electrodes zone were separated using a fine diameter silica diaphragm,Within this broad scope , the Thesis focuses on : • Production of different shape nano - crystals (Cu2O) and investigation of the correlation between experimental parameters and resulting microstructure.• Production of highly purity nano - crystalline Cu2O powder, with the estimation it’s by the available investigation instruments.• Study the different parameters, current density, bath temperature, KCl concentration , types of additives , time of precipitation, and there’s effects on the shape ,quantity ,surface roughness, powder color, on the Cu2O powder. Models have been proposed for the nano - crystal formation validated by several techniques uses such as X - ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM), and Fourier Transform Infra - Red spectroscopy (FTIR). The produced nanocrystals show good crystallinity with Cu2O purity and Copper oxide semiconductor nanoparticles were prepared by electrochemistry using galvanostatic and potentiostatic approaches. The optimum deposition conditions ( electrolyte composition , medium pH , type of additives, electrodes area ,current density , temperature of the electrolyte and applied potential of the cell) , to prepare the Cu2O nano particles have been identified; in particular the conditions that allow getting this product by using KCl ,(PVA ,SDS ,and glycerin as emulsifying agent) have been well identified for the first time. The configuration of deposited Cu2O , purity and amounts. These values depend on the electro deposition conditions such as the pH of the solution, the deposition potential and temperature. Where the study results showed that there is direct effect of these factors, it has been observed that the sizes of the precipitate crystalline decreased with increasing current density and especially at high bath temperatures its ranged about 10 - 20 nm , in addition to the effect of the percentage of additives emulsifier agents the best results at poly vinyl alcohol.. The X - ray diffraction pattern and 2? values reflect that the high purity of the deposit where obtained, without any of the other undesirable products like CuO, CuCl2 and CuCl. Also the FTIR analysis was considered. the effect of additives of the type of emulsifier on the crystalline form of the deposit, the PVA produced of the Star (Branches) crystals shape, the addition of the SDS compound leads to the form of the cubic , and the glycerin product the binary pyramid crystals shape.. Finally the conditions effect on the surface roughness of the precipitated powder also discussed. Depending of the electro - deposition conditions, different surface morphologies with various preferential crystal orientations were obtained for the temperatures of the electro - deposition of 80 °C , pH = 8 - 9 , The influence of several deposition parameters of the Cu2O, such as applied potential, pH, the temperature of the bath , the chemical composition, grain size and orientation parameters of the sample was systematically studied using X - Ray Diffraction , Atomic Force Microscopy, Transmission Electron Microscopy ,Fourier Transmission Infra - Red, and scanning electron microscopy.

تحضير وتشخيص وتقييم انواع جديدة من البولي يورثان القابلة للتفكك الاحيائي ودراسة تطبيقاتها الحيوية في اطلاق الدواء == Preparation , Identification And Evaluation of New Types of Biodegradable Polyurethane And Study Their Application In Drug Delivery

Author name: صابرين فرحان جواد
Supervisor name: محمد علي مطر
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Qadisiyah
First pages:
Abstract: Corrosion and corrosion protection of carbon steel (C.S) alloy in seawater (3.5% NaCl) was achieved in this thesis. Three types of nanoparticles (NPs) were used to protect C.S the first silicon carbide (SiC), second alumina (Al2O3) and the third zirconium oxide (ZrO2) nanoparticles (NPs). Electrophoretic deposition (EPD) technique was applied to coating the C.S surface. Different polyacrylic acid (PAA) percentage (0.1 - 1)% were added to the suspension solution of coating by the three types of NPs, to improve the protection efficiency (PE%) for the coated C.S surfaces.The corrosion rate with respect to uncoated and coated C.S with the three above NPs were measured. Different corrosion parameters were obtained; corrosion current density (icorr), corrosion potential (Ecorr), cathodic and anodic Tafel slopes (bc,ba), protection efficiency (PE%), polarization resistance (Rp) and the surface porosity (P%). The effect of temperatures (298 - 328)K on the corrosion of uncoated and coated C.S by the three NPs in presence and absence of PAA were also investigated and therefore activation energy (Ea) and preexponential factor (A) were calculated. Thermodynamic parameters ?G, ?H and ?S for all corrosion processes were obtained. Coated C.S were analysed using atomic force microscopy (AFM) to detect the morphology of surface and the particles size of coat layers which range from 60 - 103 nm, which greater than thestarting particles.The corrosion current densities (icorr) were increased generally with increasing temperatures for all cases and icorr reduced after coated C.S by different NPs in absence and presence PAA, therefore icorr reduced from 168.88 ?A.cm - 2 to 19.45, 28.71 and 30.2 ?A.cm - 2 for C.S coated by SiC, ZrO2 and Al2O3 respectively at 298K.While the Ecorr shifted to more active potential after coated by different NPs excepting when C.S coated by SiC in presence of (0.25%) PAA in coating solution suspension where Ecorr shifted to noble direction. The protection efficiency (PE%) of all coated C.S in absence and presence of PAA showed noteworthy degree of enhancement and the PE% ranged between (85 to 99.65)% for SiC , (69 to 91)% for ZrO2 and (77 to 87.9)% for Al2O3. The surface porosity (P%) were increased with increasing temperatures for all cases. The activation energy (Ea) values for the corrosion of coated C.S by different NPs lead to higher values than Ea for uncoated C.S and the highest value was (71.936) kJ.mol - 1 obtained when C.S coated by SiC in presence of (0.25%) PAA. The free energy (?G) Values for the corrosion of coated C.S generally more negatively than uncoated and the values of enthalpy (?H) for the corrosion of coated C.S by ZrO2 and Al2O3 were less negatively than uncoated C.S while coated C.S by SiC lead to more negatively ?H values.

تاثير التركيب ودرجة الحرارة ومحتوى الرطوبة على التوصيلية الكهربائية لبعض البوليمرات المشتركة بولي (استر - اميد) == The Effect of Structure, Temperature and Moisture Content on the Electrical Conductivity of Some Copoly (ester - amide) Polymers

Author name: سعد فاضل محمود جاسم الحيالي
Supervisor name: يوسف عبد الله شهاب احمد العبيدي | اسعد فيصل خطاب
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: Arabic
University location: Mosul
First pages:

الجوانب الفيزيائية والكيميائية في الخليج العربي == Physical and Chemical Oceanography of the Arabian Gulf

Author name: مؤید حسن محمد البهادلي
Supervisor name: علي عبد الزهرة دعيبل | بهجت علي سعيد
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: English
University location: Basrah
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دراسة ارتباط بعض العناصر مع حامض الاسكوربيك باستخدام البولاروغرافي النبضي التفاضلي == Studies of the Binding between Elements and Ascorbic Acid Using Differential Pulse Polarography

Author name: محمد عبد الخالق حسين
Supervisor name: الهام مجيد الرفيعي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Baghdad
First pages:

دراسات طيفية وفيزياوية لمعقدات انتقال - الشحنة لبعض مركبات الامين والكاربونيل الاروماتية ومشتقاتها == Spectral and physical Studies of Charge Transfer Complexes of Some Aromatic Amine and Carbonyl Compounds and Their Derivatives

Author name: محمد محمود مسعود الصالحي
Supervisor name: انور ذيب محمود الذيب
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Baghdad
First pages:

دراسة المساحة السطحية, المسامية وامتزاز بعض المركبات العضوية على الانابيب النانوية للكاربون وTiO2 == Study of surface area, porosity and adsorption of some organic compound on carbon and TiO2 nanotube

Author name: انفال اسماعيل ابراهيم
Supervisor name: يوسف كاظم عبد الامير
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Baghdad
First pages:

دراسـة كهـروكيميائية ونظرية لمركـب الازوبنزين وتداخلاته مع الالبومين والبيليروبين : طريقة غـير مباشرة لتقدير البيليروبين في الادرار == Electrochemical and Theoretical Study of Azobenzene, It's Interaction with Bovine Albumin & Bilirubin - Indirect Method for Determination of Bilirubin in Urine

Author name: عمار عبـد السـتار ابـراهيـم
Supervisor name: هيثم عبد الوهاب عبد الله وهب الوهب
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: Arabic
University location: Mosul
First pages:

دراسة ضوئية لمعقدات مشتقات الكوينولين مع ايونات الحديديك والفناديوم الخماسي والكوبلت الثلاثي في مذيبات مختلفة == Photo chemistry study of quinoline derivates complexes with Fe(III), V(V) and Co(III) ion in different solvent

Author name: حوراء قاسم حامي
Supervisor name: حسين اسماعيل عبد الله
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Baghdad
First pages:

دراسة امتزاز مبيدي الادغال(2?4) - D والترفلان على سطوح اطيان عراقية مختارة == A Study of Adsorption of Herbicide 2,4 - D and Triflan on selected Iraqi Clay Surfaces

Author name: عذراء سلمان احمد
Supervisor name: سحر صالح عبد القادر
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Baghdad
First pages:

تحضير وتحوير بعض البوليمرات الدوائية المساعدة الجديدة == Synthesis and A modification of Some Prodrug Polymer

Author name: فارس حمود محمد
Supervisor name: فريال محمد علي السلامي | سعدون عبد الله عودة
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: Arabic
University location: Babylon
First pages:

Photoinitiation Of Polymerization Of Vinyl Monomers By Transition Metal Chelates

Author name: حسن عباس حبيب
Supervisor name: صلاح محسن عليوي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: English
University location: Babylon
First pages:

دراسة تاكل وتثبيط تاكل حديد الصلب المغلون في المحيطات الملحية الحامضية والقاعدية == Corrosion And Corrosion Inhibition Study Of Galvanized Steel In Salty Acidic And Basic Media

Author name: هيفاء عبد الامير عباس
Supervisor name: خلود عبد صالح السعدي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Baghdad
First pages:

قياس تراكيز بعض الملوثات الغازية في طبقة التروبوسفير السطحية لمدينة الناصرية / العراق == Concentrations Measurement of Some gaseous Pollutants in The surface Troposphere Layer of Nassiryah City / Iraq

Author name: اسعد عبد الله صفوك
Supervisor name: محسن عريبي حسين الدخيلي
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Dhi Qar
First pages:

دراسة طيفية لتوتمرية كيتو - اينول لتفاعل عدد من قواعد شيف المشتقة من 2 - هيدروكسي - 1 - نفثالديهايد وامينات مختلفة مع كاشف الازاحة اللنثاني Pr(fod) في مذيبات المختلفة == Spectroscopic study of keto - enol tautomerism of a number of Schiff bases derived from the reaction of 2 - hydroxy - 1 - naphthaldehyde and different amines with lanthanide shift reagent Pr(fod)3 in different solvents

Author name: رويدة حاجم سلطان الحمداني
Supervisor name: لیلى محمد نجیب محمد سلیم
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
Language: Arabic
University location: Mosul
First pages:

دراسة توصيلية الاحماض الامينية الارجنين واللايسين ومعقداتهما في مزيج من مذيب الايثانول والماء في درجات حرارية مختلفة == Conductivity Study of Amino acids Arginine and Lysine and Their complexes In amixture of Water and Ethanol at Different Temperatures

Author name: فاتن محمد بشير السبع
Supervisor name: ياسر عمر حميد العلاف
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Mosul
First pages:

دراسة بعض الخصائص الفيزيائية لمحاليل المواد الفعالة سطحيا ذات الانظمة الثنائية والثلاثية وتاثير اضافة سلسيلات المثيل على تركيز المذيلات الحرج CMC == A Study of Some Physical Properties for Binary and Ternary Surfactants Systems with the Effect of Addition of Methyl Salicylate on the Critical Micelles Concentration

Author name: فهد جمعة حماد
Supervisor name: رباح علي خليل
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: Arabic
University location: Mosul
First pages:

دراسة الاستقرارية الضوئية لبوليمر كلوريد الفينيل بوجود بعض مركبات قواعد شيف == Photostabilization Studies Of Poly(Vinyl Chloride)Polymer In Presence Of Some Schiff’s Bases Compounds

Author name: زينب علاء حسين
Supervisor name: علي سلمان الطائي | عماد عبد الحسين يوسف
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
Language: English
University location: Baghdad
First pages:
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