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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
University: University of Baghdad - College Of Science For Girls - Physics Department
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
Specific topic: Solid State and Materials Physics
Degree: Doctorate
University: University of Baghdad - College Of Science For Girls - Physics Department
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.

المتحسسات الطبيعية للخلايا الشمسية ذات الصبغات المتحسسة على قواعد اوكسيد الخارصين == Natural Sensitizer for Dye - Sensitized Solar Cells Based on Zinc Oxide

Author name: اوراس طارق شاكر
Supervisor name: صلاح عبد الله حسون | رعد محمد صالح الحداد
General topic: Physics
Specific topic: Solid State and Materials Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:
Abstract: This thesis focused on the study of dye - sensitized solar cells (DSSCs) based on ZnO nanoparticle as a semiconducting layer with two natural dyes.The present study began by synthesizing ZnO nanoparticles by two methods. The first method ZnO nanoparticles prepared by sol - gel method with (0.1, 0.2, 0.3 M) zinc acetate and then thin films of zinc oxide prepared by using spin coating technique with thickness equal to (109 nm), while the second method technique of ZnO nanoparticles prepared by sol gel method (0.2 M) from zinc acetate was selected as the optimum concentration to make thin film of zinc oxide (In the form of a paste) by using doctor - blade technique with thickness equal to (111nm).The effective mass model for spherical particles (Brus equation) for ZnO nanoparticles were (1.3147, 1.4056, 1.6379 nm) for three concentration.The characteristic of the prepared films on glass substrates have been examined by X - ray diffraction analysis (XRD), UV - Vis spectroscopy, photoluminescence spectrum (PL), scanning electron microscopy (SEM), Atomic Force Microscope (AFM) and Thermo Graviometric Analysis (TGA).In both methods , ZnO films were prepared on transparent conducting oxide (ITO) coated glass then addition of chlorophyll as sensitized dye which extracted from spinach leaves and anthocayanin pigment from pomegrenate juice and they were used as the working electrode (anode) of dye - sensitized solar cell (DSSCs).The absorption spectra of all dyes were performed by UV - Visible spectroscopy which showed that the dye absorbed light in the visible region from (400 nm) for chlorophyll pigment and (510 nm) for anthocyanenpigment.The (I - V) characteristic curves of the fabricated tow cells were measured and studied at constant light intensity. All photovoltaic parameters of the cells were presented. The results revealed that the extract of Pomegranate by using spin coating lead to the highest efficiency (15%).

دراسة تاثير البلازما غير الحرارية على الخصائص التركيبية والبصرية لاغشية SnO2

Author name: الاء خميس برد علوان
Supervisor name: حامد حافظ مربط
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:
Abstract: في هذه الدراسة تم استخدام منظومة بلازما الحاجز العازل (DBD _system) لدراسة تاثير البلازما غير الحرارية في الخصائص التركيبية والبصرية لاغشية اوكسيد القصدير SnO2 المحضرة بطريقة الرش الكيميائي الحراري, تتكون هذه المنظومة من قطبين مصنوعين من النحاس محاطين بمادة عازلة من التفلون , يربط قطبا المنظومة الى طرفي محولة عالية الفولتية متغيرة (1 - 15) كيلو فولت ,وتعمل بفولتية ادخال 220 فولت وذات تردد 50 هيرتز وفولتية اخراج 15 كيلو فولت . تم تحضير اغشية ثنائي اوكسيد القصدير (SnO2) الرقيقة بطريقة الرش الكيميائي الحراري ذات سمك mμ 0.725 من خلال رش محلول مكون من كلوريدات القصدير المائية (SnCl4. 5H2O) المذابة في الماء المقطر بتركيز 0.1M وعلى قواعد زجاجية بدرجة حرارة 450˚C . تم تشخيص الخصائص التركيبية للاغشية من خلال دراسة نمط حيود الاشعة السينية (XRD) .اذ اظهرت النتائج ان اغشية ثنائي اوكسيد القصدير ذات تر كيب متعدد التبلور ومن النوع الرباعي مع هيمنة الاتجاه (110) . ووجد ان هذا التركيب لم يتاثر بالبلازما غير الحرارية اي انه لم يلاحظ اي تغير في الخواص التركيبية للغشاء حين عرضت الاغشية المحضرة لبلازما غير الحرارية المنتجة من منظومة الحاجز العازل ولازمان مختلفة (10,8,6,4,2) دقيقة وكذلك تم دراسة علم التشكل وخشونة السطح للاغشية المحضرة في بحثنا هذا سجلت صور سطح التشكل بواسطة جهاز AFM وقد وجد ان هناك تباين في قيم الحجم الحبيبي حيث انها تتغير مع زيادة زمن التعريض للبلازما .تمت دراسة الخواص البصرية للاغشية المحضرة من خلال تسجيل طيف النفاذية ، ولمدى الاطوال الموجية (300 - 1100)nm، كما وجد ان الانتقالات الالكترونية عند حافة الامتصاص الاساسية كانت من النوع المباشر المسموح. ولوحظ ايضا تباين في قيم فجوة الطاقة حيث انها تتغير مع زيادة زمن التعريض للبلازما . كما استعمل طيف النفاذية في ايجاد الانعكاسية والامتصاصية ومعامل الامتصاص والثوابت البصرية المتضمنة معامل الانكسار، ومعامل الخمود، والجزء الحقيقي والخيالي لثابت العزل وكذلك ايجاد التوصيلية البصرية .وجد بان كل من الامتصاصية ومعامل الامتصاص ومعامل الخمود والجزء الخيالي من ثابت العزل والتوصيلية البصرية تزداد مع زيادة زمن التعريض للبلازما, بينما تقل كل من النفاذية والانعكاسية والجزء الحقيقي من ثابت العزل ومعامل الانكسار مع زيادة زمن التعريض للبلازما | In this study, the use of plasma dielectric barrier system (DBD _system) to study the non - thermal plasma effect on the structural and optical properties of tin oxide SnO2 films prepared by Chemical Spray pyrolysis , this system consists of two electrodes Mades of copper surrounded by insulating material Teflon, connects the pole system to both ends of a converted high - voltage variable (1 - 15) kV, type (Ac) and change voltages beyond the converted (voltage introduction of 220 volts, frequency 50 Hz, and the voltage output of 15 kV) by changing the input voltage it by linking it to equipped voltage alternating variable (0 - 220) volts. Tin oxide (SnO2) thin films were prepared by Chemical Spray pyrolysis way through a Solution spray consisting of tin chlorides water (SnCl4. 5H2O) dissolved in distilled water concentration (0.1M) and the rules on a glass 450˚C degree heat. It was diagnosed with structural properties of the films through the study of X - ray diffraction pattern (XRD) . As the results show that the tin oxide films binary tree with multi - Cape gelling and It is kind quartet with the dominance of direction (110) . It was found that this installation was not affected by any non - thermal plasma that not noticed any change in the structural properties of the films. Films prepared Offered to non - thermal plasma producer from dielectric barrier system and different times (0,2,4,6,8,10) minutes and The atomic force microscope (AFM) images shows that the (Roughness Average, Average Diameter and the square root of the average roughness square (RMS)) all of the film (SnO2) decreased and increase with increase Time exposure to Non - Thermal Plasma . Optical Properties for films prepared were studied by recording the spectral transmittance and absorbance, to the extent wavelengths (300 - 900) nm, also found that the electronic transfer at the edge of the fundamental absorption was one of the allowed direct kind. It was also noted an increase and decrease in the value of the energy gap with increasing time of exposure to plasma. Absorbance and Transmtion spectra have also been used to find the reflective optical constants included refractive index, and the coefficient of Extinction, the real and the imaginary part of the dielectric constant and optical connectivity. Found that all of the absorbance , the coefficient of absorption , Extinction coefficient , the imaginary part of the dielectric constant and optical conductivity increases with increasing exposure to plasma time, while at least each of the transmittance , reflectivity ,real part of the dielectric constant and the refractive index decreases with an increased exposure to plasma time

دراسة تاثير معقداث معدنية على الخواص البصرية والكهربائية وفوق السمعية لاغشية بولي فينيل الكحول وبولي فينيل استيت المحضرة بطريقة الصب == Studying the Effect of Metal Complexes on the Optical, Electrical and Ultrasound Properties of PVA and PVAc Films Prepared by Casting Method

Author name: الاء جواد كاظم الكدساوي
Supervisor name: ندى خضير عباس | مجيد علي حبيب
General topic: Physics
Specific topic: Solid State and Materials Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:
Abstract: The present study focused on the modification of the structural, optical and electrical properties and acoustical parameters of poly (vinyl alcohol), poly (vinyl acetate) and polyblend of (poly (vinyl alcohol) + poly (vinyl acetate)) by adding (0, 3, 6 and 9) wt.% of metal complexes, which are : Chloropentaaminecobalt (III) chloride [Co(NH3)5Cl]Cl2 and Potassium Dioxalatocuprate (II) Dihydrate K2[Cu(C2O4)2].2H2O. The mentioned composites films were prepared by solvent casting technique.All samples were structurally investigated by X - ray Diffraction XRD, Fourier transform infrared spectroscopy FTIR, Scanning electron microscope SEM which revealed that there is an association between the polymer matrix and the additive.The optical data at wavelengths range (190 - 800) nm, were analyzed and interpreted in term of the theory of phonon assisted indirect electronic transition. It is observed that energy gap decreases as the metal complexes content increases. The smallest obtained energy gap is 1.86 eV for PVAc / [Co(NH3)5Cl]Cl2 composites films. The refractive index, extinction coefficient, and the dielectric constant increase with increasing the concentration of the additive.The D.C electrical conductivity increases with temperature which exhibited a semiconductor behavior. Also the activation energy values are decreases with increase of additive concentration.The A.C electrical conductivity is increased with increasing applied electrical field frequency (102 to 5*106) Hz and with additive concentration. The dielectric constant and dielectric loss were decrease with increasing the frequency and increase with the concentration of the additive.The acoustical parameters have been measured in frequency range of (25, 30, 35 and 40) KHz. Metal complex enhances the ultrasonic absorption coefficient of polymer matrix. The velocity decreases with increasing metal complex.

تصنيع ودراسة الخصائص البصرية والكهربائية لاغشية CdSe/Si كخلايا شمسية باستخدام تقنية البلازما == Fabrication and Study Optical and Electrical Properties of CdSe/Si Films As a Solar Cells Using Plasma Technique

Author name: ولاء مراد علي رضا
Supervisor name: حامد حافظ مربط | كاظم عبد الواحد عادم
General topic: Physics
Specific topic: Plasma Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:
Abstract: تم في هذه الدراسة تصنيع الخلية الشمسية (CdSe/Si) بتقنية الترذيذ ذي التيار المستمر وذلك بترسيب اغشية رقيقة من سيلنيوم الكادميوم على رقائق من السليكون بسمك مختلف nm(300,400,500) وبزمن ترذيذ مختلف(30,45,60) min ومسافة بين الاقطاب 4cm تحت ضغط فراغي 10 - 5 ملي بار ثم لدنت الاغشية بدرجات حرارة مختلفة K (348,373,423). تم ايضا دراسة تاثير ضغط الاركون اعلى خصائص البلازما والتي تتضمن : درجة حرارة الالكترونTe, كثافة الالكترونات ne وكثافة الايونات ni حيث جرى قياسها تحت ضغوط مختلفة من غازالاركون.لقد وجد ان درجة حرارة الالكترون تقل بزيادة ضغط غاز الاركون وان كثافة الالكترونات تزداد بزيادة ضغط الغازوان سلوك كثافة الايونات مشابه لسلوك كثافة الالكترونات ولكن بقيمة اعلى. ثم تم دراسة الخواص التركيبية للاغشية المحضرة على ارضيات زجاجية بواسطة حيود الاشعة السينية ,(XRD)وقداظهرت نتائج XRD ان الغشاء بسمك nm300 قبل التلدين كانت عشوائية ويزداد التبلور لجميع الاغشية عند زيادة التلدين ليصبح متعدد التبلور . درست الخصائص البصرية لاغشية سيلنيوم الكادميوم المحضرة على ارضيات زجاجية بسمك مختلف قبل وبعد التلدين من خلال قياس طيفي النفاذية والامتصاصية كدالة للطول الموجي وكانت نتائج النفاذية عالية جدا مما جعلها ملائمة لتطبيقات الخلايا الشمسية حيث تبين ان النفاذية تزداد بزيادة درجات حرارة التلدين وتقل بزيادة السمك , وان الامتصاصية تقل بزيادة درجات حرارة التلدين وتزداد بزيادة السمك عند الاطوال الموجية القصيرة. ولوحظ ان معامل الامتصاص البصري لاغشية سليلنيوم الكادميوم يقل تدريجيا بزيادة الطول الموجي ودرجات الحرارة والسمك وان قيم معامل الامتصاص التي تم الحصول عليها هي اعلى من (cm - 1 104) مما يؤكد ان الانتقال هومن النوع المباشر . كما تم حساب فجوة الطاقة البصرية لسمك مختلف وتبين ان فجوة الطاقة تزداد بزيادة درجة الحرارة وتقل بزيادة السمك وكذلك حسبت الثوابت البصرية المتضمنة معامل الانكسار ومعامل الخمود وثابت العزل بجزئيه الحقيقي والخيالي كدالة للطول الموجي . وكذلك تم دراسة الخصائص الفوتوفولتائية المتضمنة قياس (سعة - جهد) للمدى Volt (0 - 1) عند تردد ثابت مقداره kHz (200) وتم من خلال هذه القياسات معرفة نوع المفرق الهجيني للخلية الشمسية (CdSe/Si) وتبين انه من النوع الحاد . وتم حساب جهد البناء الداخلي وقد لوحظ ان جهد البناء الداخلي يزداد بزيادة درجة حرارة التلدين والسمك وتم كذلك حساب عرض منطقة النضوب ووجد انها تقل بزيادة درجات حرارة التلدين وتزداد بزيادة السمك وكذلك لاحظنا ان السعة تقل بزيادة فولتية الانحياز العكسي , وايضا تقل بزيادة السمك لكن السعة تزداد بزيادة درجة حرارة التلدين . وعند قياس تيار - فولتية تحت ظروف الاضاءة للخلية الشمسية وجدنا ان كفاءة الخلية الشمسية(η) تزداد قيمهما بزيادة السمك وبزيادة درجة حرارة التلدين من 2.2 الى3.1ومن 2.2الى6.5 على التوالي وقد فسر سبب ذلك بوجود تغير في تركيب الاغشية وكذلك تحسن طبقة التداخل بين n - CdSe وp - Si.وحسبت كفاءة الخلية الشمسية وكانت افضل كفاءة (6.5%) عند سمك nm (500) ودرجة حرارة تلدين K (423) وشدة اضاءة mW/cm2 (69). | In this study , a solar cell (CdSe/Si) by DC Planar Sputtering Technique has been manufactured . CdSe films have been deposited on wafer of silicon prepared with different thicknesses (300,400 and 500) nm at different sputtering time equal to(30,45 and 60) min and distance is equal to 4cm under vacuum of 10 - 5 mbar and different annealing temperature (348,373 and 423) K .The effect of Argon gas pressures on plasma characterizations were studied such as : electron temperature Te, electrons density ne, ions density ni under different Argon gas pressures. It has been found that the electron temperature decreases with increasing Argon gas pressure. The electron density was found to increase with increasing argon gas pressure .The behavior of ions density was similar to that of the electrons, but their value was higher. The structural characteristic of the CdSe films prepared on glass substrates has been studied by using X - ray diffraction. The tests showed that all these films are polycrystalline, and their the structures, transformed to crystalline when the annealing temperature Ta increased . Optical properties of cadmium selenide films with different thicknesses are prepared on glass substrate are studied before and after annealing by measuring their spectral transmittance and absorbance as a function of wavelength. The results of the transmittance is very high, making it suitable for applications of solar cells. It was found that the transmittance increases with increasing of annealing temperature and decreases with increasing of thickness. It was found also that the absorbance decrease with increasing of annealing temperature and increases with increasing thickness at short wavelengths. It was noticed that the absorption coefficient of cadmium selenide gradually decrease with increasing of wavelength and annealing temperature, but decreases with increasing thickness. The value of absorption coefficient is greater than 104 cm - 1 , which refers to direct transition kind . Optical energy gaps of CdSe films were calculated for different thicknesses respectively. The energy gap increases with increasing temperature and decreases with increasing of thickness .The optical constants, refractive index , extinction coefficient and dielectric constant ( real and imaginary parts) as a function of wavelength were calculated as well .It was also studied the electrical and photovoltaic characteristics of these films including the measurement of the (capacity - voltage) at bias voltage (0 - 1) volt at constant frequency of (200) kHz. We observed that the type of heterojunction solar cell (CdSe/Si) was abrupt. Also we calculated the built - in potential and noticed that its values increase with increasing of annealing temperature and thickness. We also calculated the width of the depletion region and we found its values decrease with increasing of annealing temperature and increases with increasing thickness . It also noticed that the capacity decrease with increasing reverse bias voltage, and thickness but increases with increasing of annealing temperatures. The current - voltage characterization under illumination it was found that the efficiency (η) increase with increasing of the thickness and annealing temperatures from 2.2 to 3.1 and from 2.2 to 6.5 respectively , while increase with increasing of annealing temperatures due to the existence of change in the structure of films and the improve in the interface layer between n - CdSe and p - Si. The efficiency of the cell was calculated and its best value was (6.5%) at thickness (500) nm, annealing temperature (423)K and intensity of illumination (69 mW/cm2) .

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
Specific topic: Laser Physics and Electro-optics
Degree: Doctorate
University: University of Baghdad - College Of Science For Girls - Physics Department
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.

تحضير ودراسة الخصائص التركيبية والبصرية لاغشية cds النقية والمشوبة بـ cu وzn ذا التركيب النانوي المحضرة بطريقة ترسيب الحمام الكيميائي == Preparation And Study of Structural And Optical Properties of Cds Pure And Doped Zn, Cu Thin Films Nanocrystalline Prepared By Chemical Bath Deposition

Author name: نغم ياسين احمد
Supervisor name: ندى خضير عباس
General topic: Physics
Specific topic: Solid State and Materials Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:
Abstract: تم تصنيع اغشية كبريتيد الكادميوم النانوي والمرسبة على قواعد من الزجاج وبسمك ( 300nm, ±250nm ±) باستخدام طريقة الترسيب بالحمام الكيميائي ((CBD في محاولة لتغيير فجوة الطاقة لكبريتيد الكادميوم (2.4 eV) CdS بمزجها مع كبريتيد الخارصين مرة وكبريتيد النحاس مرة ا | Nanoparticles of undoped cadmium sulfide (CdS) were prepared on glass substrates of (±300nm,250nm) thickness using chemical bath deposition (CBD) method. An attempt was made to modify the band gap of CdS (2.4 eV) by preparing a mixed lattice with a band g

تاثير اوكسيد المغنيسيوم وثاني اوكسيد السليكون النانوي على بعض الخواص الميكانيكية والحرارية لمتراكبات الايبوكسي == The Effect of Nano Mgo And Sio2 on The Mechanical And Thermal Properties of Epoxy Nano Composites

Author name: مريم زهير عبد الواحد طعمة
Supervisor name: خالد رشاد الرواي
General topic: Physics
Specific topic: Solid State and Materials Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:
Abstract: تم دراسة تاثير اضافة كل من اوكسيد المغنيسيوم النانوي وثاني اوكسيد السيلكا النانوي على الخصائص الميكانيكية, والحرارية, وبحجم حبيبي (40nm) لاوكسيد المغنيسيوم و(15 - 20nm) لثاني اوكسيد السيلكا,وبنسب وزنية هي (0.01,0.02,0.03,0.04,0.05,0.07 and 0.1%) لكلا الما | We discussed in this research the effect of addition of nano magnesium oxide and nano silica dioxide on the mechanical and thermal properties in granular size (40 nm) for magnesium oxide and (15 - 20 nm) for silica dioxide in percentages (0.01,0.02,0.03,0

دراسة عامل الاستطارة الذري لبعض الاغلفة الذرية المشبعة == Study of The Atomic Scattering Factor For Some Closed Atomic Shells

Author name: بيداء سامي هادي
Supervisor name: خليل هادي احمد البياتي
General topic: Physics
Specific topic: Theoretical and Molecular Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:
Abstract: لدراسة الخواص الفيزيائية للذرات والايونات يجب التعرف على بعض الخواص الذرية المهمة لهذه الدراسة، ومن هذه الخواص الذرية تم حساب : - 1. دالة توزيع الكثافة القطرية لجسيم واحد.2. القيم المتوقعة لجسيم واحد.3. دالة التوزيع البينية f(r12).4. القيمة المتوقع | To study the physical properties of atoms and ions one must recognize some important atomic properties, the following properties were studied : - 1. The one particle density distribution.2. One - particle expectation values.3. Inter - particle distri

دراسة تاثير البلازما غير الحرارية في الخواص التركيبية والبصرية للاغشية اوكسيد الخارصين النانوية (ZnO) الرقيقة المحضرة بطريقة التحلل الكيميائي الحراري == A Study Effect Non - Thermal Plasma of The Structural And Optical Properties of Nano Zinc Oxid (ZnO) Thin Films Prepared By Chemical Spray Pyrolysis

Author name: اسراء محمد كاظم الخفاجي
Supervisor name: رامز احمد الانصاري
General topic: Physics
Specific topic: Solid State and Materials Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:
Abstract: حضرت اغشية رقيقة من اوكسيد الخارصين (ZnO) المحضرة من محلول خلات الخارصين [(CH3COO)2Zn.2H2O] بطريقة التحلل الكيميائي الحراري على قواعد زجاجية مسخنة بدرجات حرارة (450, 430, 400)°C, وتم الحصول على اغشية باسماك مختلفة. تم في هذا البحث دراسة اثر تعريض الاغش | The films have been prepared from the Zinc Oxide thin films were prepared from solution of Zinc acetate [(CH3COO)2Zn.2H2O] by chemical spray pyrolysis method deposited on a preheated glass substrate at (450, 430, 400)°C, We have been on films to differen

تاثير الخصائص البصرية والكهربائية لاغشية NiO الرقيقة المحضرة بتقنية البلازما المنتجة بالليزر == Study of Optical And Electrical Properties of Nio Thin Films Prepared By Laser Induce Plasma Technique

Author name: استبرق عبد الكريم عباس
Supervisor name: حامد حافظ مربط | كاظم عبد الواحد عادم
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:
Abstract: في هذا البحث تم تحضير اغشية اوكسيد النيكل (NiO) بطريقة الترسيب الليزري النبضي وتمت معالجتها حراريا بدرجة حرارة الغرفة وبدرجات حرارة تلدين مختلفة (473K,673K) وكانت النبضات المستخدمة (500,700,900,1100) نبضة وطاقة ليزريه ثابته (900 mJ) ومسافة بين الاقطاب = 1 | In the present work, the NiO thin films have been deposited by pulsed laser deposition (PLD) and treated at RT and different annealing temperature (473K, 673K), used pulses of (500, 700, 900, 1100) shots, constant laser energy) 900 mJ (and distance = 1cm,

حساب دوال توزيع الكثافة الالكترونية المختلفة للاغلفة الذرية غير المتناظرة كرويا == Calculation of Various Electronic Density Distribution Functions For Non - Spherically Symmetric Atomic Shells

Author name: نعيمة جيجان مذكور التميمي
Supervisor name: خليل هادي احمد البياتي | علي عبد اللطيف كريم
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:
Abstract: يتــضمن البحث الحالي دراسة نظريـة للخصائص الذرية للانظمة ذات الاغلفة المفتوحة في المستويات المتهيجة 1s2 2p و1s2 3p و1s2 3d لذرة الليثيوم والمستقرة 1s2 2s2 2p و1s2 2s2 2p2 لذرتي البورون والكربون والايونات المشابهة لهما. تمت الدراسة باستخدام تقنية التجزئة ح | The atomic properties of open - shell systems in the excited states 1s2 2p, 1s2 3p and 1s2 3d of Li - atom and the ground states 1s2 2s2 p and 1s2 2s2 p2 of B - and C - like ions are examined. The study was conducted using partitioning technique to analyz

الكشف عن اورام الدماغ من صور MR استنادا الى (Co - occurrence Matrix) == Detection of Brain Tumor From Mr Images Based on Co - Occurrence Matrix

Author name: كوثر علي خلف
Supervisor name: علياء حسين علي
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:
Abstract: يعد الكشف عن اورام الدماغ وتجزئتها مهمة شاقة للاطباء كما وانها تستغرق وقتا طويلا. نظرا للتباين والتعقيد الموجود في هذه الاورام. وخصوصا عندما تكون التغيرات الشكلية للورم خفية وغير منتظمة ويصعب الكشف عنها وتمييزها عن طريق الفحص السريري. لذا فان التصوير | Magnetic Resonance Imaging (MRI) offers a lot of information for medical examination. Fast, accurate and reproducible segmentation of MRI is desirable in many applications. The mostly brain images contain noise. Therefore, accurate segmentation of brain i

دراسة بعض الخصائص الميكانيكية والتوصيلية الحرارية للمتراكبات النانوية للايبوكسي-ثنائي اوكسيد التيتانيوم والالومينا والمتراكبات الهجينة == Study some of mechanical and thermal conductivity properties of Epoxy-TiO2 and Al2O3 nanocomposites and their Hybrid composites

Author name: سارة خضير طه
Supervisor name: خالد رشاد الراوي
General topic: Physics
Specific topic: Solid State and Materials Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:

تصميم منظومة لانتاج الاوزون من البلازما غير الحرارية عند الضغط الجوي الاعتيادي == Design Of Ozone Generator Device By Non - Thermal Plasma At Atmospheric Pressure

Author name: هديل عبيد اسماعيل
Supervisor name: حامد حافظ مربط الجبوري
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:

استخدام مخلفات البوكسايت العراقي الناتجة من استخلاص الالومينا في انتاج مواد عازلة حراريا == USE OF IRAQI BAUXITE WASTES AFTER EXTRACTING ALUMINA TO PRODUCE REFRACTORY MATERIALS

Author name: هدى ضياء جعفر شكارة
Supervisor name: فاضل عبد رسن عمارة | جنان حامد المختار
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:

دراسة الخواص التركيبية والبصرية لاغشية SnS2:Cu الرقيقة المحضرة بطريقة التحلل الكيميائي الحراري == A Study of the Structural and Optical Properties of SnS2: Cu Thin Films Prepared by the Chemical Spray Pyrolysis

Author name: نضال علي محمود
Supervisor name: ندى خضير عباس
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:

الانتقال الالكتروني في Al/a-Se /M لثنائي شوتكي == Electronic Transport In Al/a - Se /M Schottky Diodes

Author name: ميادة مطر فضالة
Supervisor name: رامز احمد محمد الانصاري | رعد محمد صالح
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:

تطبيقات مقياس دوبلر الليزري في الاوعية الدموية الدقيقة باستخدام ليزر شبه الموصل 785 نانومتر == Laser Doppler Flowmetry Application In Microcirculation Using 785nm Diode Laser

Author name: مريم محمد عبود الجبوري
Supervisor name: عدنان صالح محمد | علي شكر محمود
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:

دراسة بعض الخصائص الفيزيائية لذرة الكاربون وايوناتها (C++, C+) والايونات المشابهة لها (N+,B - ) في الحالات 1S2 2S2, 1S2 2S2 2P1, 1S2 2S2 2P2 == Study of Some Physical Properties of Carbon Atom , it's ions and the like ions in The States

Author name: وسن علي حسين المشهداني
Supervisor name: خليل هادي البياتي
General topic: Physics
Specific topic: Theoretical and Molecular Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:

دراسة نظرية للخصائص البصرية لبعض اشباه الموصلات العشوائية في منطقة الامتصاص العالي من حافة الامتصاص البصري == A THEORETICAL STUDY FO THE HIGH ABSORPTION REGION OF THE OPTICAL ABSORPTION EDGE FOR SOME AMORPHOUS SEMICONDUCTORS

Author name: وسن عبد الرحمن خلف
Supervisor name: عبد الله ابراهيم عبو
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:

تصنيع خلية شمسية من مركبات اكاسيد الكادميوم المرسبة على قواعد من السليكون بتقنية الترذيذ بالبلازما == Fabrication Of CdO/Si Solar Cell By DC Planar Sputtering Technique

Author name: وسن ضياء حسين الشمري
Supervisor name: حامد حافظ الجبوري
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: English
University location: Baghdad
First pages:

نبات التبغ مؤشر للتلوث الاشعاعي == Tobacco Plant of Indicator Radiation Contamination

Author name: ورود كريم عبود
Supervisor name: ورود كريم عبود
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:

دراسة خاصيتي الكلال والانثناء لراتنج الايبوكسي المدعم بالياف الكفلر والزجاج ومتركبات هجينة == Study of Fatigue and Bending Properties For Epoxy / Kevlar - Glass Fibers And Hybrid Composite

Author name: هند وليد عبد الله عيسى
Supervisor name: خالد رشاد الراوي | حارث ابراهيم جعفر
General topic: Physics
Specific topic: Physics
Degree: Master
University: University of Baghdad - College Of Science For Girls - Physics Department
Language: Arabic
University location: Baghdad
First pages:
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