Show: 25 50 75 100 Results

Search results: 25 out of 208

تحديد النوى المشعة في عينات الدم المصابة بابيضاض الدم باستخدام منظومة كاشف اشعة كاما (SAM 940TM) == Determination of Radioactive Nuclei in Leukemia Blood Samples Using Gamma Ray Detector System (SAM 940TM)

Author name: علاء حيدر خلف التميمي
Supervisor name: ميثم عبد الله علي الشناوة | حيدر عبد الحسين الحمودي
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تصميم وتنفيذ منظومة انواء جوية ونقل البيانات عبر شبكة الاتصالات والشبكة العنكبوتية == Manufacturing a meteorological, transferring and recording data via the communications network and the Internet system

Author name: عبد الله كامل عبد الله عباس
Supervisor name: ستار جبار قاسم
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير متراكبات ترميم اسنان ضوئية ودراسة تاثير اضافة المواد الحياتية على الخصائص الفيزيائية والميكانيكية == Preparation of photic dental restorative composite and study the effect of adding biomaterial on the physical & mechanical properties

Author name: صدام عبد الرحمن عيد علي الحلفي
Supervisor name: كريمة مجيد زيدان | رافد مصطفى البدر
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 الفيزيائية للصفائح النانوية لاوكسيد الكرافين واوكسيد الكرافين المختزل بطرق صديقة للبيئة وتطبيقاتها كمضادات للبكتيريا == preparation and study at the physical properties of graphene oxide / reduced graphene oxide nanosheets by green methods and their application as an antibacterial agent

Author name: حيدر عادل حسين
Supervisor name: جلال جبار حسن
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تصنيع منظومة تحضير اغشية رقيقة بطريقة ترسيب الطبقات الايونية المتعاقبة والسيطرة عليها بشكل الي == Fabrication of successive ionic layer adsorption and reaction(SILAR) by automatic control System.

Author name: هاجر محمد قاسم
Supervisor name: مازن عوني مهدي
General topic: Physics
Specific topic: Physics
Degree: Higher Diploma
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تعزيز اداء الجهاز المناعي بوساطة التشعيع بالليزر == Enhancement the Performance of the Immune System by Laser Irradiation

Author name: منال مراد قاسم الموسوي
Supervisor name: عبد المنعم خليل الكامل | عواطف حميد عيسى
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

الاستجابة البصرية اللاخطية لاغشية الخلائط النانوية لمركبات كالكوجينات البزموث وتطبيقاتها في الاجهزة الفوتونية الذاتية == Nonlinear Optical Response in Bismuth Chalcogenides Nanocomposite Films and its Application in All-photonic Devices

Author name: محمد امين يحيى شبر
Supervisor name: هيثم لفتة سعدون | سعيد جبار عباس
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة في انتقال الالكترونات المستقطبة داخل نظام مكون من نقطتين كميتين == A Study of Polarized Electrons transition in Two Quantum Dots System

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

بناء منظومة مختبرية اوتوماتيكية نموذجية لدراسة خصائص عينات مستشعرات الغاز == Manufacturing of a typical automatic laboratory system to study the properties of gas sensor samples

Author name: سحر خضير توفيق السعدي
Supervisor name: جلال جبار حسن
General topic: Physics
Specific topic: Physics
Degree: Higher Diploma
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة نظرية لعملية اثارة الذرات بواسطة الالكترونات باستخدام تقريب Born - Bethe == Theoretical study of atoms excitation process by electrons using Born-Bethe approximation

Author name: رباب مصطفى عبد الحسن العيثان
Supervisor name: علاء عبد الحسن خلف
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير ودراسة خواص الاغشية المحضرة للمركب النانوي CdSe/PVP وبعض تطبيقاته كثنائي شوتكي وجهاز الذاكرة الالكتروني == Preparation and characterization of CdSe/PVP nanocomposite thin film and It's application as Schottky diode and electronic memory device

Author name: الزهراء علي حسن
Supervisor name: علاء شاوي مشعان | 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:

تحضير وتوصيف خواص المركب الرباعي شبه الوصل وتطبيقه في الكواشف الضوئية == Preparation and Characterization of Cu2ZnSnS4 Semiconductor compound and its application as Photo Detectors

Author name: عبد الحميد سعيد عبد الحميد
Supervisor name: ستار جبار قاسم
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

النمذجة العددية للدراسة الميدانية للخصائص الفيزيائية في المياه البحرية العراقية == Numerical Modeling for Field Study of physical Characteristics in Iraqi Marine Water

Author name: علي عبد الرضا لفته
Supervisor name: نوري حسين نور | سامر عدنان رحمة
General topic: Physics
Specific topic: Physics
Degree: Doctorate
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة لتيار البرم المستقطب في نقطتين كميتين مختلفتي التركيب بوجود تفاعل برم مدار راشبا == A Study of Spin Polarized Currents in Double Quantum Dots Different in Structure in the presence of Rashba Spin- Orbit Interaction

Author name: مروة حميد حنظل
Supervisor name: طالب عبد النبي سلمان الامارة | هيفاء عبد النبي جاسم العبادي
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

تحضير ودراسة خصائص النقاط الكمية الكاربونية وتطبيقاتها في الخلايا الشمسية

Author name: علي عطية محسن
Supervisor name: سعيد جبار عباس
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

دراسة التركيب النووي لنوى 36P ، 40K و40Sc فـي اطار تقريب تام - دانكوف متغير الشحنة == Study the nuclear structure of 36P, 40K and 40Sc nuclei in the framework of Charge - changing Tamm- Dancoff Approximation

Author name: نسرين غازي عبد النبي
Supervisor name: عمار عبد الرحمن السعــد
General topic: Physics
Specific topic: Physics
Degree: Master
University: University Of Basrah - College Of Science
Language: Arabic
University location: Basrah
First pages:

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:

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:

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 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 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:
1 ... 5 6 7 8 9