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مساحة المقطع الراداري للاجسام الموصلة المطلية بطبقة عازلة والمتناظرة محوريا == Radar Cross Section for Coated Bodies of Revolution

Author name: رؤى رحيم هيلان
Supervisor name: زكي عبد الله احمد | عقيل سامي طاهر
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير ودراسة الخواص البصرية والكهربائية اورثو - مشترك - للبوليمر المشترك بولي (انيلين اورثو توليدين ) النقي - مشترك - انسدين والمشوب وتطبيقاته في الخلايا الشمسية == Preparation and Studying the optical and electrical properties of Copolymer poly(Aniline-CO-O Ansidine -CO-O Toluidine)pure and doping and It's application as Solar Cell

Author name: افراح حسين صاكي
Supervisor name: حسين فالح حسين
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة بعض الخواص الفيزيائية للبولي بارا انسدين المحضر بطريقة كيميائية والبوليمر المشترك الجديد PU/Rh6G == A Study For Some Physical Properties Of The Chemically Synthesized Poly Para Anisidine(PPAN)and new copolymer(PU/Rh6G

Author name: احمد سعود عبد الخنجر
Supervisor name: كريمة مجيد زيدان | علي قاسم عبد الله
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة نظرية الاستطارة الالكترونية والبوزترونات لبعض الذرات الحرة والايونات الموجبة عند طاقات مختلفة == A theoretical study of electrons and positrons scattering for some free Atoms and Positive Ions at Different Energies

Author name: احلام خضير ياسر
Supervisor name: فلحي عبد الحسن علي | عقيل هاشم حسين
General topic: Physics
Specific topic: Electronics Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير خلطة البولي يورثين ايبوكسي النقي والمشروب بمضافات محلية ودراسة الخواص الميكانيكية والخواص العازلية == Preparation mix polyurethane - epoxy pure And tinged with local Additives ,And Study Some of Mechanical and Dielectric Properties

Author name: محمد جاسم سلطان
Supervisor name: خالد ابراهيم عجيل
General topic: Physics
Specific topic: Semiconductors
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة التاثيرات النسبية و غير النسبية على المقاطع العرضية للاستطارة المرنة للالكترونات من الذرات

Author name: علي خيري بدر الاسدي
Supervisor name: علاء عبد الحسن خلف
General topic: Physics
Specific topic: Electronics Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير وتشخيص ودراسة الخصائص البصرية والكهربائية للبوليمرات المشتركة من بولي كحول الفينيل المطعم ببعض الاصباغ العضوية وتطبيقاتها في الخلايا الشمسية == Synthesis , Characteristic and Study the Optical and Electrical Properties of Polycohol Alvinyl Grafted Some Organic Dyes and Their Application in Solar Cell

Author name: زينب علي عبد الرسول الربيعي
Supervisor name: علي قاسم عبد الله
General topic: Physics
Specific topic: Solar Energy Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

الخواص البصرية والكهربائية ومحدد القدرة البصري لبعض الصبغات العضوية المشوبة لاغشية البوليمر

Author name: رغد جبار صدام
Supervisor name: عماد الدين حسين علي السعيدي
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحديد النشاط الاشعاعي للنظائر المشعة 137Cs,134Cs,I131,40Kفي الاغذية المستهلكة في مدينة البصرة جنوب العراق == Radiation activity determination of 137Cs,134Cs,I131,40K and in food consumed in Basrah South of Iraq

Author name: مروة جواد كاظم راضي
Supervisor name: عبد المنعم خليل الكامل | علي عبد عباس الربيعة
General topic: Physics
Specific topic: Nuclear and Environmental Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: SAM 940TM detector has been used to detect and identify the radioactive isotopes (Radio - Isotope Identification (RIID)) at low levels of gamma rays emitted from food materials.Six samples of fresh milk have been pick out for six locations in Basrah. Ten samples of imported milk powder have been taken into account. Ten samples of lentils, rice, coffee and tea have been taken into account.Eight samples of mineral water, one of distilled water and one sample of piped water; the last one has been picked out from the net distributed water at physics department building in college of science university of Basrah.The results of our study show that, the annual effective dose for the radioactive potassium ????40 in food materials of the highest value. For local fresh milk is (0.216,0.529)mSv/y for adults and children respectively. It is of these samples have been taken from Zubair city, and its less value is (0.076,0.186)mSv/y for adults and children respectively. These samples have been taken from Abuo Al Kasseb. As for the imported milk powder, the highest value is (0.556,1.349) mSv/y for adults and children respectively. The sample is related to Al - munash milk from New Zealand, and less value is (0.272,0.660)mSv/y for adults and children respectively. The sample is related to modhash imported milk powder from Oman.For rice, the highest value is (0.303,0.636) mSv/y for adults and children respectively. The sample is related to Mahmood rice from India, and less value is (0.149, 0.313) mSv/y for adults and children respectively. That is for Galaxy rice imported from India.As for lentils, the highest value is (0.029 ,0.061) mSv/y for adults and children respectively. The sample is related to Wade al akdar lentils from Syria, and its less value is (0.020,0.042)mSv/y for adults and children respectively for Urbak lentils imported from Tukey. For water, the highest value is (0.189, 0.398) mSv/y for adults and children respectively for distilled water and Janaan drinking water from Baghdad. Its less valueis (0.183, 0.385)mSv/y for adults and children respectively for Aquafina drinking water imported from Kuwait.For coffee, the highest value is (0.041) mSv/y for adults for two samples from Brazil and one sample from Spain and other produce from Poland. Its less value is (0.019)mSv/y from European Union production. For tea, the highest value is (0.019, 0.039) mSv/y for adults and children respectively for Jant almunaash and Gazalian samples tea, its less value is (0.008,0.015)mSv/y for adults and children respectively for Alwaza, Mahmood and Baiet alteb samples tea imported from Sri Lanka.The annual effective dose of Iodine ????131 , Cesium ????????134 and Cesium ????????137 in lentils, rice, coffee, tea, mineral water, distilled water and piped water have been carried out and the results are listed in thesis.

تحضير وتشخيص بعض البلورات السائلة وخلائطها الثنائية البلورية السائلة ودراسة بعض خواصها الفيزيائية == Preparation & Characterization of some liquid crystals and Binary liquid crystalline mixtures and study some of their physical properties

Author name: زينب نديم مطشر
Supervisor name: اياد جاسم الحجاج
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: study included as a first step the preparation of compound 4 - heptyloxy benzaldehyde and derivatives by linking alkoxy series with the aldehyde, and in the second step was to prepare Schiff base compounds through interaction of equal moles of the compound 4 - heptyloxy benzaldehyde with some primary amines with different polar groups, and in the third stage was to prepare mixtures from the Schiff base compounds resulting from the second step,and we obtained five liquid crystalline mixtures at low temperatures and some of them close to room temperature, and then the chemical structures was chacterized and the absorption bands for functional groups was given by FTIR spectroscopy scan . A microscope with polarized light (POM) and a differential scaning calorimeter (DSC) was also used to study the liquid crystalline phases for individual compounds, as well as binary liquid crystalline mixtures and then a discussion of changes taking place at phase transition temperatures for individual liquid crystalline compounds as well as their binary mixtures , as characterized by these mixtures it owns a wide range of temperatures and some are close to room temperature ranging between (22.1 - 53.1 ℃). we has been studying some of the physical properties of these mixtures and compare them with the pure liquid crystals to see what has been achieved to improve these properties by studying the electrical properties (conductivity and dielectric ), as well as the activation energy , we has also been studying the photoelectric effect and determine the threshold voltage in the cases of parallel and vertical alignments , and the study shown a variation in the dielectric behaviour of binary liquid crystalline mixtures of remarkable increase compared to individual liquid crystalline compounds either the positive or negative dielectricanisotropy , ranging from ( - 1.320 - 2.234), while the variation in the electrical conductivity of binary mixtures of liquid crystal range (0.138 - 0.351 (ohm.m) - 1, and finally studied photoelectric effects for individual liquid crystalline compounds, as well as binary liquid crystal mixtures show that liquid crystalline mixtures have seen a clear decline in the threshold voltages (1.3 - 3.9Volt

دراسة تاثير جهود المصيدة على سلوك الدالة الموجية في تكثيف بوز اينشتاين == Study influence of the trapping potentials on the behavior of the wave function in Bose - Einstein condensation

Author name: وليد حميد عبد المالكي
Supervisor name: خالد محمد جياد الموسوي | خالد محمد جياد الموسوي
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: This dissertation have been studied and analyzed the wave function behavior under trapping potentials that are usually used in experiments which led to formed Bose - Einstein condensation in ultra cold gases. The wave function behavior is dealt with under the effect of three types of potentials : the Harmonic oscillator, the double well, and the Optical Lattice. These are used individually, overlapped together, and when two different kinds are shed on each other in an orthogonal form. Besides, factors and variables that have major or minor roles in potentials the distribution that determine the wave function behavior is discuss in this dissertation.And study parameter ???????? range of effect on the nature of the Harmonic oscillator trapping potential and the Wave Function distribution, this factor effect is studied under the effect of the Harmonic oscillator Trap. As well as, studying this parameter effect on the Wave function behavior under the effect of other three types of potential traps used in Bose - Einstein condensation which are : the Optical Lattice potential overlapped with the Harmonic oscillator potential, the Optical lattice potential orthogonally shed on the harmonic oscillator potential. Also, studied the wave function behavior under the effect of the double well potential when the range of distribution centre is ∓0.5 and when the distribution centre increases to ∓2.And also discussed the effect of the nonlinear G on the wave function behavior under the effect of the Harmonic potential in terms of value and distribution. Through studying under the effect of the Harmonic potential, it have noticed that there is a linear relation between the energy and the chemical voltage at the centre of the trap as well asbetween the wave function and Energy. Yet, the linear relation is not exist between Energy and the frequency rate ???????? as well as between the wave function and the chemical potential. While there is a nonlinear relation exist under the effect of the optical lattice potential overlapped with the Harmonic potential at the centre of trap as well as the relation is exist between the wave function and the energy at the centre of the trap. It is noticed that when the optical lattice potential orthogonally shed on the Harmonic potential a linear relation exists between the energy and the chemical potential with anisotropy value and this linear relation becomes more clear at high value of anisotropy while the wave function behavior increases exponentially with anisotropy values. Furthermore, we have studying the effect of Factor ???????? and Factor ???????? on the Wave Function behavior under the harmonic potential trap plus the optical lattice potential .

دراسة تاثير ليزر النديميوم ياك (Nd+3 : YAG) النبضي على خلايا دم الانسان خارج الجسم == Study ofQ - Switched Nd+3 : YAG Laser Effect on Human Blood Cell in Vitro

Author name: منى جبر لفتة
Supervisor name: حسن حمادي محمد | مزاحم محمد عبد الله
General topic: Physics
Specific topic: Life Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: Nd+3 : YAG laser wavelength(1064)nm and the two other wavelength, namely λ=532nm and λ =355nm,were used. Many blood sample groups were exposed to these laser wavelengths to study the physical and biological effects appeared as a result of interaction of laser beams with human blood cells. Variable energy densities of these laser wavelength extended from (53.11mJ/cm2 to1990.45mJ/cm2) were employed in these experiments. Sixty human blood samples were collected which included mails with age between(20 - 35)years and weights between (60 - 75)gm. These samples were distributed into three groups : (a) The first group : Twenty human blood samples were exposed to laser (λ=355nm) with energy densities extended from (53.11mJ/cm2 to 1328.18mJ/cm2). The exposure time was fixed to (100sec) and the laser repetition frequency was (5Hz).White blood cells were counted before (control sample) and after laser exposure. types of WBC revealed, fluctuation in the count rates which didn’t reach the level of significant effect. The red blood cells results revealed a numerical changes in the Packed cell volume (PCV) depending on laser power densities. These Changes indicate that the laser affected the cells visbility . On the other hand, The spectroscopic results have been influenced, the optical properties of hemoglobin blood. The decrease in absorbance of hemoglobin and oxyhemoglobin as a function of laser influence gives a further evidence of changes in optical properties as compared with the control samples.(b)The second group : These group samples were exposed to laser wavelength (λ=532nm) with laser, energy densities range extended from (79.62mJ/cm2

دراسة تاثير الترابط والقدرة الضائعة في الموجهات المترابطة على كفاءة المجمع - الموزع البصري باستعمال طريقة الفروقات المحددة == Study The Effect of Coupling and Crosstalk in Directional Couplers on The Performance of Multi / Demultiplexers Using Finite Differences Method

Author name: منصور حنظل منصور زغير
Supervisor name: صباح مهدي محمد امين
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: Directional couplers can be used to make important planar optical integrated circuits for optical communications, such as Mach - zehnder interferometers and wavelength division multiplexers. Wavelength division multi/demultiplexing of optical signals is an efficient means to increase the information density per fiber.Both the coupled mode theory and the FD numerical method are used in this study to analyze multiwaveguide DCs.In this thesis, we present an analytical expression for crosstalk of MWGDC based on relationship between the normal modes and local modes, where these modes are obtained numerically using FD mothed.Also, the mode field profile and their evolution along the structure are presented through the analytical expression and calculated numerically using FD method. With the help of this analytical expression, the input power can be controlled to be enter from a chosen hannel. This enable us to calculate the crosstalk that corresponds to a certain input channel.The transmission characteristics of a four channel multiplexer based on three MZI can be described in terms of the propagation matrices. In this study, the coupling coefficient of DC and the phase shift of MZI are treated to be wavelength dependent parameters. Crosstalk introduced by such process are also calculated.The transmission characteristics of three arm MZI as a DWDM is investigated theoretically by deriving the propagation matrix of 3WGDC using coupled mode theory. Thus, two parameters are introduced,  and  , as a designing controlling parameters for DWDM devices. By adjusting these parameters a DW DM devices can be presented.

دراسة نظرية لفحص نقل الالكترون خلال نقطتين كميتن مقترنتين == Theoretical Study to Investigate the Electron Transport Through Double Coupled Quantum Dots

Author name: محمد عبد الزهرة نجدي
Supervisor name: هيفاء عبد النبي جاسم
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: In this study, a model calculation is introduced for the electron transportthrough a system consists of two quantum dots coupled serially, embeddedbetween two nonmagnetic leads (source and drain), due to the importance ofthis kind of systems in many academic and experimental applications.In our treatment, the time independent Anderson - Newns Hamiltonian modelis considered as a basis to study the system dynamics and then to derive spindependentanalytical formula to calculate the occupation numbers of thequantum dots energy levels, the corresponding quantum dots energy levelsand the molecular virtual energy levels, as a function of bias voltage .These relations are solved self - consistently, which are all employed tocalculate the tunneling current. The differential conductance is calculatednumerically by using finite differences method.And as the efficiency of electron transport through coupled quantum dotsdepends on the system parameters such as the energy levels position of eachquantum dot, the Coulomb repulsion energy on each quantum dot, theeffective exchange energy, the tunneling coupling between the dots and leadsand the coupling energy between the two quantum dots, all these parametersare studied and investigated in details and the role of all these parameters inthe tunneling current and the differential conductance calculations ispresented. also our treatment is applied to two kinds of systems, when thequantum dots are symmetric and when they are asymmetric depending on ourchoice for the over mentioned parameters. Our treatment is utilized to studythe following : 1 - - - Two regimes are studied, the first is the strong coupling regime and thesecond is the weak coupling regime.2 - - - The role of the spin exchange interaction in determining the type ofinteraction (if it is attractive or repulsive) between the quantum dots.3 - - - The role of the spin exchange interaction between the quantum dots indetermining the coulomb blockade in the strong coupling regime.And according to our calculations, we conclude that at the strong couplingand when neglecting the effective exchange interaction, one can determinethe bias voltage values that correspond to the maximum values of thedifferential conductance which is equal to the value of the couplinginteraction between the quantum dots. And the maximum and minimumvalues in the differential conductance curve are changed when the quantumdots energy levels are lying below the energy reference. Also, ourcalculations that concern to the effective exchange interaction make it sure that our results can be utilized to study the electronics that related to the coupled quantum dots. Our calculations that related to the Coulomb blockade make it sure that one can use the quantum dots molecule as an electronic switch. Our calculations that concern to the gate voltage effect investigation in the case of equilibrium can be employed in the detection about the type of coupling with the environmental which effects directly in determining the rates of electron tunneling from the left lead to the active region and then to the right lead.

تحضير ودراسة الانتقالات الالكترونية للمواد المتراكبة من البولي يوريثان وصبغة البنفسج البلوري PU/CV والبولي يوريثان وصبغة الحمراء المتعادلة PU/NR == Synthesis And Study of the electronic Transition of Polymer Composite polyurathane , Crystal Violet (PU/CV) And polyurethane,Neuteral Red (PU/NR

Author name: عماد عبد الرضا عريبي
Supervisor name: علي قاسم عبد الله
General topic: Physics
Specific topic: Electronics Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: In equals weight percent age adding to them the organic dyes ,crystal violet (CV) and natural red dye (NR) were applied as indicator in bioapplication in percentage weight (10% ,20% ,30% ,40% ,50%) thin films were prepration by to methods, firest by spin coating to optical properties and cast methods to electrical properties thin films characterization by FTIR to estimated the functional groups forPU and dyes , were the charts indicated the reaction between the PU and NR , while the mix between PU and CV are polymer compositen TO study the crystallinty of thin films we are use the XRD , the result shows amorphas structers Optical properties were studies in wavelength range (300 - 900 nm) , and From absorption and transmittance spectra we are estimated some optical Parameters like the absorption coeffici ent (α) The thin films have Sharpe absorption edge and the indirect transition while Direct transition to percentage (40% , 50%) the indirect transition to PU/NR Thin films the energy gap increasing with increase the wight percentage to To PU/CV while decreasing to PU/NR thin films and the values (1.53 - 1.93eV ) , (1.83 - 1.78eV ) respectively . Urbach energy (Eu) were also calculated and increasing the value of urbach States with increase the weight percentage for all thin films prepared . TheSome optical parameters can be calculated such as extication coefficient (K) And refractive index (n) , the real and imaginary parts(1,2 ) and the optical, Electrical conductivities (opt ,e ) as function to photon energy . W - D model adopted to estimated some optical paramters such as ( λο , N/mο , Sο , e ,eo , nο , M - 3 , M - 1 , Eο ,Ed ) All parameters tabulated , the PU/CV were more response from the PU/NR Electrical conductivity studies for thin films prepared by al (PU/CV) , (PU/NR)/AL and from measuring the current - olage / Al Characterization we calculated the electrical conductivity and activation energy accompanying electrical conductance operation and the value were (610 - 10 - 1.210 - 8 S/cm ) , (0.84 - 0.57eV ) ,(210 - 12 - 8.3510 11 S/cm ) ,(0.46 - 0.56eV ) respectively . We can see the conductivity value for PU/CV larger than the value of PU/NR and with increase and decrease because these related to the mix and Time preparation of PU/CV and PU/NR and the final is reaction between PU and NR dye not physical mix

تحضير ودراسة خصائص الخلايا الشمسية الصبغية المتحسسة DSSCs == Preparation and Study The Properties of Dye Sensitized Solar Cells

Author name: علي عبود عبد الحجامي
Supervisor name: ستار جبار قاسم | باسل علي عبد الله
General topic: Physics
Specific topic: Solar Energy Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: يقدم هذا البحث نوعا من الخلايا الشمسية التي تستخدم صبغة عضوية حساسة للضوء. حيث تستخدم هذه الخلايا غشاءا رقيقا من مادة ثاني اوكسيد التيتانيوم مغطى بطبقة من صبغة عضوية لامتصاص الطاقة الشمسية وتحويلها الى الكترونات حرة بحيث تحقن الى طبقة ثاني اوكسيد التيتانيوم الذي يعمل كجامع للالكترونات. وتتكون ايضا من محلول الكتروليتي للتعويض عن الالكترونات المفقودة من جزيئات الصبغة العضوية. وفي هذه الدراسة جرى تحضير اغشية رقيقة من ثاني اوكسيد التيتانيوم TiO2 بطريقتين, الطريقة الاولى هي طريقة العجينة paste وكان سمك الغشاء المحضر بحدود 30 مايكرومتر والطريقة الثانية هي طريقة Sol - Gel باستخدام جذور التيتانيوم ايثوكسايد Ti(OCH2CH3) وكان سمك الغشاء المحضر بحدود 12 مايكرومتر. وفي كلا الطريقتين لتحضير اغشية TiO2 جرى ترسيبها على القواعد الزجاجية المعدة لذلك لغرض دراسة الخواص البصرية لها مثل الامتصاصية والنفاذية والانعكاسية ومعامل الامتصاص ومعامل الانكسار ومعامل الخمود وثابت العزل العقدي بجزئيه الحقيقي والخيالي وفجوة الطاقة البصرية المباشرة وغير المباشرة, وجرى دراسة الخواص التركيبية والسطحية لهذه الاغشية بواسطة SEM وXRD وAFM. ومن ثم جرى تحضير الانود الضوئي للخلية الشمسية صبغات المالجيت الخضراء والمثلين الزرقاء والرودامين بي المذابة الايثانول كلا على حدة, بعد ذلك نقوم بغمر الاغشية الرقيقة للـ TiO2 المرسبة على ITO المحضرة بالطريقتين (paste وSol - Gel) في محلول الصبغة ثم نستخرجها من محلول الصبغة لتجف لتكون جاهزة لتحضير الخلية الشمسية. حيث كانت المساحة الفعالة للـTiO2 المحضر بطريقة Pasteهي 0.2 سنتمتر مربع, بينما كانت المساحة الفعالة للـTiO2 المحضر بطريقة Sol - Gel هي 0.16 سنتمتر مربع. بعد ذلك تم تحضير القطب المضاد من تحضير عجينة الكاربون. وذلك بصب العجينة على القواعد الزجاجية الموصلة ITO واجراء المعالجة الحرارية له ليكون القطب المضاد جاهز للخلية الاستعمال في الخلية الشمسية. اما الالكتروليت فقد تم تحضيره باذابة الايودين I2 مع يوديد البوتاسيوم في احد المذيبات التالية (ethylene Glycol ,DMSO, ethanol) كلا على حدة لتحضير نماذج مختلفة من الخلايا الشمسية ودراسة الفرق في مميزة الخلايا الشمسية لكل مذيب على حدة. وبعد تحضير اجزاء الخلية بصورة منفردة تم جمعها بطريقة السندويج. وحسبت مميزة (التيار - فولتية) للخلايا باستخدام جهاز قياس الخواص الكهربائية ومصدر ضوء من الزينون, ومنها تم حساب كلا من فولتية الدائرة المفتوحة Voc وتيار الدائرة المغلقة Isc والقدرة العظمى Pmax وعامل الملئ F.Fوكفاءة الخلية η ومقاومة التوازي Rs ومقاومة التوالي Rsh. وفي خطوة اخرى تم اضافة كمية من نترات الفضة الى الالكتروليت لمعرفة تاثيره على معاملات الخلية الناتجة. وكانت افضل كفاءة جرى حسابها للخلية هي ذات صبغة المالكيت الخضراء MG حيث بلغت كفاءتها 0.741% لخلية ذات TiO2 المحضر بطريقة Sol - Gel و0.25% لخلية ذات TiO2 محضر بطريقة paste باستخدام الكتروليت ذات مذيب ethylene glycol وتحسنت بعد اضافة كمية محددة من نترات الفضة AgNO3 الى الالكتروليت لتصبح 0.912% للـ Sol - Gel و0.303 للـ paste. اما بالنسبة للخلية ذات صبغة الرودامين بي وكانت افضل كفاءة جرى حسابها بلغت 0.69% لخلية ذات TiO2 المحضر بطريقة Sol - Gel و0.224% لخلية ذات TiO2 محضر بطريقة paste باستخدام الكتروليت ذات مذيب ethylene glycol وتحسنت بعد اضافة كمية محددة من نترات الفضة AgNO3 الى الالكتروليت لتصبح 0.881% للـ Sol - Gel و0.704% للـ paste.اما بالنسبة للخلية ذات صبغة المثلين الزرقاء وكانت افضل كفاءة جرى حسابها بلغت 0.302% لخلية ذات TiO2 المحضر بطريقة Sol - Gel و0.113% لخلية ذات TiO2 محضر بطريقة paste باستخدام الكتروليت ذات مذيب ethylene glycol وتحسنت بعد اضافة كمية محددة من نترات الفضة AgNO3 الى الالكتروليت لتصبح 0.501% للـ Sol - Gel و0.15% للـ paste. حيث بينت الدراسة ان اعلى كفاءة هي للخلية ذات TiO2 المحضر بطريقة Sol - Gel وصبغة Malachite Green مع اضافة كمية من نترات الفضة الى الالكتروليت كانت, وان افضل مذيب للالكتروليت هو ethylene glycol. | This research involves in preparing solar cells that use a light - sensitive type organic dye. These cells produce the use of thin of titanium dioxide, that is covered with a layer of organic material, absorb solar energy and use it to free electrons. These electrons are injected into a layer of titanium dioxide. The cells also consist of a electrolyte solution to compensate for the lost electrons from the organic dye molecules. In this study, thin films of carbon dioxide titanium TiO2 is used to prepare in two ways, the first way is the way the paste and the membrane thickness about 30 micrometers. The second way is the way Sol - Gel using titanium Ethoxide roots and has been deposited thin membrane in the form of layers until obtain the desired thickness of Ti ( OCH2CH3) and the membrane thickness has 12 micrometers. In both methods the prepared membranes TiO2 were deposited on glass bases prepared for the purpose of examining the optical properties. Also, studies were made for structure and surface of this membranes by XRD and FESEM and AFM. Solar cells are prepared by dissolving amount of dyes Malachite Green, Methylene Blue and Rhodamine in ethanol separately, Then immersing the thin film of TiO2 precipitated the ITO prepared both ways (paste and Sol - Gel) in the dye solution, then bit we produce here from the dye solution to dry to be ready to prepare the solar cell. Where the effective area of the TiO2 is prepared by Paste is about 0.2 square centimeter, while the effective area of the film in a way TiO2 was prepared by Sol - Gel is about 0.16 square centimeter. The counter electrode is made by preparing a paste of carbon as been the Carbon powder Black is the size of nanoparticles to slimy of TiO2 solution, then adds to distilled water to the mixed using a rock and mortar (Mortar), and then pour the dough rules on the glass conductive ITO, and subjected to heat 250 degree Celsius for one hour to be ready to counter - electrode cell used in the solar cell. The electrolyte uses in this research as prepared by dissolving the amount of iodine I2 with the amount of potassium iodide in one of the following solvents (ethylene Glycol, DMSO, ethanol) away from light to study the difference between the electrolyte resulting from these solvents. It is after the solar cell DSSC pigment assembly. The calculated characteristic (current - voltage) of cells using Keathly device and light source of xenon, Both the open circuit voltage Voc and the closed - circuit current Isc and the vast ability Pmax factor overfilling F.F and efficiency of the cell η and the parallel resistance Rs and series resistance Rsh were calculated . In another step it has been added to the amount of silver nitrate to the electrolyte to see its effect on the resulting cell parameters. The best efficiency is calculated for the cell of a dye Malachite green MG which of efficiency reached 0.741% for the cell with TiO2 at the Sol - Gel and 0.25% for the cell with TiO2 at the paste using electrolytes with solvent ethylene glycol and improved after the addition of a specific quantity of silver nitrate AgNO3 to the electrolyte to become 0.912% of Sol - Gel and 0.303 of the paste. The cell with a dye Rhodamine B is studfish best and found to have efficiency 0.69% of the cell with TiO2 that formed as Sol - Gel and 0.224% for the cell with TiO2 paste using electrolytes with solvent ethylene glycol and improved after the addition of a specific quantity of silver nitrate AgNO3 to the electrolyte to become 0.881% of Sol - Gel and 0.704% of the paste. The efficiency of the cell with a dye Methylene Blue is calculated and found to be 0.302% for the cell with TiO2 prepared by the Sol - Gel method and 0.113% for the cell with TiO2 prepared by the paste method using electrolytes with solvent ethylene glycol and improved after the addition of a specific quantity of silver nitrate AgNO3 to the electrolyte to become 0.501% of Sol - Gel and 0.15% for paste. This study shows that the highest efficiency of the cell prepared by the TiO2 Sol - Gel method and dye Malachite Green, When the amount of silver nitrate was added to the electrolyte, and the best solvent of the electrolyte was ethylene glycol.

حسبة كثافة الحالات الالكترونية للسطح في تفاعل الايونات البطيئة مع سطوح المعادن والاغشية الرقيقة == Calculation of surface density of states in slow ion interaction with metal surfaces and thin films

Author name: علاء عادل شنيف الغزي
Supervisor name: طالب عبد النبي سلمان
General topic: Physics
Specific topic: Electronics Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: This study included in using a theoretical model that already made to calculate the probability of the electronic Emission from the surfaces of Metals as a result of helium ion scattering at these surfaces , the ions motion is at the direction of the surface and depends on the atomic level broadening and the emitted electrons spectrum , also on probability of neutrality or survival of the ion , to initiate the theoretical model to calculate the electronic density of states of the surfaces of metals and thin films using experimental data of previews studies of the Auger neutralization spectrum for this surface .From the experimental data we calculate the Auger transform , , considering the electronic density of states in the valence band to the surface as convolution forming to Auger transform and by using fourier,s transformations we get the electronic density of states at the surfaces of Nickel Ni, Copper Cu, Aluminum Al and tungsten W and for same thin film such of MgO , MgCaO, MgSrO.

تاثير م عاملات الاضطراب الجوي على حسابات منظوما ت المدى الليزرية == Effect of Atmospheric Turbulence parameters on Laser Range systems calculations

Author name: صادق عطية راشد
Supervisor name: حسن حمادي محمد
General topic: Physics
Specific topic: Laser Physics and Electro-optics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
Abstract: In this thesis, an equation of atmospheric turbulence factor were derived the effect of such factor of the laser beam path of Er - Glass laser of ( 1.54m)wavelength. The results were copared at distances and propagation modes of laser beam in the atmosphere. Analysis system was used to determining the effect of atmospheric turbulent parameters, which are : laser beam radius at transmitter Wo, turbulent factor turb τ and intensity correction at target surface Pshape . And received power at photo detector for laser range finder LRF, additional study of effect the variation of refractive index strcture paramete 2 n c , inner - scale turbulence l , and the aperture dimension of photo receiver rec. r on the values and shape of receiving power, according the signal to noise ratio SNR equation , maximum range of the LRF in different weather conditions and compared with the results of the international literatures. New equation of Gaussian beam for calculation the efficiency of LRF system performance in the turbulent medium. Analytical comparsion for power and range calculations from the concluded equation of the Gaussian beam which take into consideration the effect of the turbulent attenuation in the range calculation, A special equation for power shift in the different two cases, which are in the present and absent of turbulence.A partical addition to this study, the weather elements are measured in to the Basrah city atmosphere locally with the maximum range Rmax for the LRF in the two different season summer and winter.An equation of receiving rangeof laser target designator system LTD using Lambert function is estimated and compared its results with concluded equation of recent researches. MATLAB - 7 sorces code program were written to declare the effect of turbulent parameters on ranging and disgnation calculations, also describe the effect of the laser beam power variation in range calculations. The ideas and results of this study are used to design an LRF and LTD in different weather conditions and alternative weather turbulent variance.

تحضير الياف نانوية موصلة من الخلائط البوليمرية PANI : DBSA/PS بطريقة الغزل الكهربائي واستخدامها في تصنيع خلية شمسية عضوية - لاعضوية == Synthesis Semiconductor Nanofiber of Polyblend (PANI : DBSA/PS) By Electrospinning Method and Application in Solar Cell

Author name: دلال نصر منشد
Supervisor name: كريمة مجيد زيدان | علاء شاوي مشعان
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير ودراسة الخواص البصرية والكهربائية للمتراكبات البوليورية النانوية المواصلة PANI - DBSA/ MWCNTs وتطبيقاتها في الخلايا الشمسية == Preparation and Study The Optical and Electrical Properties of Nanocomposite (PANI - DBSA / MWCNTs) and Application in Solar Cell

Author name: هناء هاشم عناية
Supervisor name: كريمة مجيد زيدان
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: English
University location: Basrah
First pages:
Abstract: The present thesis Conducts polymer (polyaniline) doped with Dodycyl Benzene Sulfonic Acid (DBSA) was prepared by chemical polymerization and with the help of ammonium persulphat (NH4)2S2O8 as oxidizing agent.Multi well carbon tubes MWNTs are ultrasonically treated with strong acide using a 3 : 1 mixture of concentrated H2SO4 and HNO3, producing carboxylic groups c - MWNTs .Nanocomposite conducting polymers PANIDBSA/ MWCNTs was prepared with adding different weight ratios (0%,1%,2%,3%,5%)(MWNCTs to PANI - DBSA). Accordingly, films of these nanocomposite polymer were prepared by spin coating technique .To study the optical properties, these films were deposited on glass, and on interdigitated finger electrode for the - electrical properties.The chemical structure of the prepared polymers PANI - DBSA, c - MWNCT and PANI - DBSA/MWCNTs are characterized by the FTIR spectra .The results indicated an appearance of functional group of doping with DBSA and MWNCTs changed to c - MWNCTs.The structure of preparation films are characterized by X - RAD diffraction .The results show crystalline peaks partial crystallinity of the PANI - DBSA/MWNCTs. The grain size of polymer was calculated by Scherrer relation.Morphologies and diameters of the nanocomposite were studied by Atom ic Force Microscope(AFM) and Scanning Electron Microscope (SEM). The average diameters of nanocomposite change between (81 - 118) nm and the roughness increased with increasing of MWNCTs in nanocomposite. Ology and the thickness were measured by Scanning Electron Microscope (SEM).The result shows the polymer covered MWNCT.The optical properties of preparation film were studied from absorbance spectra at wave - lengths of (300 - 1100 nm). The analyses of optical measurement shows direct transition with energy gap decreasing increases MWNCTs about(3.4 - 1.9) eV. The reflection spectrum is analysed to find same optical constant like extension coefficient and refraction coefficient.The electric conductivity was measured and it was found that the thin films correlate with the ohmic behaviour at voltage under 10V.The electricalconductivity increases as the ratios of MWNCTs increases in PANIDBSA/ MWNCTs nanocomposite from(6.17x10 - 3 S/cm ) at 0wt% to (1.12x10 - 1 ????/cm ) at 5wt% .The effect of temperature on the electric conductivity of all ratios of thenanocompositesare also studied. The resultindicated the activationenergy decrease as MWNCTs increase from 0.15 at (0wt %) to 0.05 at (5wt %).In electronic applications of nanocomposite conducting polymers solar cell,two kinds of solar cells (ITO/TiO2/PANI - DBSA/MWCNTs/C/ITO ) and (ITO/TiO2/PANI - DBSA/MWCNTs/dye/C/ITO) were fabricated. The currentvoltage characteristics are measured at light source 100mw/cm2.The solar cell parameter like open circuit voltage VOC ,short circuit current JSC, shunt resistance RSh, series resistance RS, full factor FF, and efficiency η, are calculated. The efficiency of solar cell at different ratios of MWNCTs in PANI - DBSA/MWNCT were calculated. The result indicated that the efficiency increased as MWNCTs increase. The efficiency of solar cells also increases with adding dye.

رصد تعجيل الجسيمات المنشطة من الاكليل الشمسي خلال مرحلة التعجيل بين الكواكب للاحداث ذات الانفجارات الشمسية المتعددة == Observation Of Coronal Acceleration During Interplanetary Accelerated Phase In Multi Eruption Solar Energetic Particle (MESEP) Events

Author name: فراس محي بلبول الحمداني
Supervisor name: واثق ايوب طه الرمضان | امجد السواد
General topic: Physics
Specific topic: Solar Energy Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: English
University location: Basrah
First pages:

تاثير التصوير بالرنين المغناطيسي التشخيصي والمادة المظللة على الفعالية الحيوية التاكسدية لخلايا الدم البلعمية == the effect of diaganostic mrl and contrast media on phagocytic blood cells functional activity

Author name: شيماء محمد محي
Supervisor name: حسين علي الخرسان | علي حسين الهاشمي
General topic: Physics
Specific topic: Medical Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

حساب معاملات النفاذية وقيم الطاقة الذاتية لتراكيب ابار كم متعددة ذات مقاطع جانبية لجهود اعتباطية باستخدام طريقة مصفوفة النقل == TRANSMISSION COEFFICIENTS AND EIGENSTATE VALUSES CALCULATION OF MULTIPLE QUANTUM WELL STRUCTURES WITH ARBITRARY POTENTIAL PROFILE USING TMM

Author name: عبد الرحمن سيد محمد
Supervisor name: صباح مهدي محمد امين
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة نظرية في حساب استقطاب البرم لالكترونات اوجيه المنبعثة اثناء تبادل الشحنة بين ايون الهيليوم وسطوح المعادن == Theoretical Study of Spin Polarization Calculation for Emitted Auger Electrons during Charge Exchange between Helium Ion and Metal Surfaces

Author name: احمد مظفر عبد الامير
Supervisor name: طالب عبد النبي سلمان
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير ودراسة الخواص البصرية والكهربائية للخلائط البوليمرية النانوية POT - DBSA/PEO الموصلة وتطبيقاتها في الخلايا الشمسية == Preparation and Study The Optical and Electrical Properties of Nano Conducting Polyblends (POTDBSA/ PEO) and Application in Solar Cell

Author name: دلال كراد ذبیح
Supervisor name: كريمة مجيد زيدان
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:
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