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تحضير متراكب نانوي (انابيب الكاربون/فضة) ودراسة تطبيقاته في مقاومة البكتريا == Preparation and Application of Functionalized MWCNTs/Ag nanoparticles for Antibacterial Activity

Author name: ضحى سعدي احمد
Supervisor name: عدوية جمعة حيدر | محمد راضي محمد
General topic: Production engineering metallurgy and materials
Specific topic: Materials Engineering
Degree: Doctorate
University: University of Technology
Language: English
University location: Baghdad
First pages:

تقييم معايرة الكامير القياس المدى بالليزر == Camera Calibration Evaluation For Laser Ranging

Author name: بسعاد محمد سعود
Supervisor name: سنان ماجد عبد الستار | وليد ياسين حسين
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

بناء وتشغيل منظومة طيف الانهيار المستحث بالليزر لتحليل مختلف المواد == Construction and Operation of Laser Induced Breakdown Spectroscopy System for different materials analysis

Author name: مهند حبيب حسين الابراهيمي
Supervisor name: محمد صالح مهدي | علاء حسين علي
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

الاستنباط الرياضي والعملي لحدود الكسر في ليزر الحالة الصلبة النبضي == Analytical and Experimental Estimation of Fracture Limits in Pulsed Solid State Laser

Author name: لمى حسن سلمان
Supervisor name: خالد سالم شبيب | محمد جلال عبد الرزاق
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

تنفيذ تقنية اللحام الانصهاري القوسي بين الليف الفوتوني البلوري والليف احادي النمط لمتحسس درجة الحرارة == Implementation of arc fusion splicing technique between photonic crystal fiber and single mode fiber for temperature sensor

Author name: عمار انور احمد
Supervisor name: محمد صالح مهدي | صلاح الدين عدنان طه
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

دراسة اداء منظومة تذبذب معلميه بصريه للبلورات اللاخطيــه (KTPو AgGaS2) == Performance Study of an Optical Parametric Oscillation System for Nonlinear Crystals KTP and AgGaS2

Author name: محمــد جـلال عبــد الرزاق
Supervisor name: فريد فارس رشيد | محمـد صالـح مهـدي
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Doctorate
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

استخدام الليف البلوري الفوتوني كمتحسس للجسيمات البيولوجية المتناهية الصغر == BIOMEDICAL NANOPARTICLE SENSOR USING PHOTONIC CRYSTAL FIBER

Author name: ريم محمد ابراهيم الزبيدي
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

تحضير و دراسة خصائص الكواشف الضوئية لاوكس يد المنيوم النحاس/السليكون بوساطة الترسيب بالليزر النبضي == Preparation and characterization ofPhotodetectors by pulsed laser deposition

Author name: ميس سمير طارق الحمداني
Supervisor name: فريد فارس رشيد | رائد عبد الوهاب اسماعيل
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

دراسة تصميمية وبناء شبكة حماية باستخدام متحسسات الالياف البصرية == DESIGN STUDY AND CONSTRUCTION OF FIBER - OPTIC NETWORKING SECURITY SENSOR SYSTEM

Author name: نبيل غسان محمد
Supervisor name: شهاب احمد كاظم | محمد عدنان مهدي
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

دراسة محاكاة السلوك الحركي في ليزر شبه موصل ذي تضمين مباشر باستخدام التغذية الخارجية المرتدة البصرية == Simulation Study of Dynamic Behavior in Direct Modulated Semiconductor Laser Utilizing External Optical Feedback

Author name: زينب علي كاظم
Supervisor name: محمد عدنان مهدي | محمد جلال عبد الرزاق
General topic: Laser Engineering
Specific topic: Laser and Optoelectronics Engineering
Degree: Master
University: University of Technology - Department Of Laser Engineering And Optoelectronics
Language: English
University location: Baghdad
First pages:

الاداء الامثل لمروحية ثلاثية حريات الحركة باستخدام مسيطر البحث عن القيمة القصوى == Optimized Performance of 3DOF Helicopter System using Extremum Seeking Control

Author name: شهد سامي علي
Supervisor name: سفانة مظهر رافت
General topic: Control and Systems Engineering
Specific topic: Mechatronics Engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering
Language: English
University location: Baghdad
First pages:

تصميم مسيطر ضبابي زاوي للمحرك الخطوي ذو الحث الدائي == Design of Fuzzy - Like Position Controller for Permanent Magnet Stepper Motor

Author name: زيد محمد خضر
Supervisor name: فرزدق رفيق ياسين
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering - Control Engineering Branch
Language: English
University location: Baghdad
First pages:

التنغيم الامثل لمسيطر تغذيه رجعية للحالة لنظام البندول المقلوب الدوار باستخدام نظرية الحشد الزيئي == Optimal Tuning of State Feedback Controller for Rotary Inverted Pendulum using Particle Swarm Optimization

Author name: رشا محمد ناجي
Supervisor name: حازم ابراهيم علي
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering - Control Engineering Branch
Language: English
University location: Baghdad
First pages:

دراسة وتطوير نظام الكتروهيدروليكي مؤازر جديد مبرد لمخلفات الاحتراق لصناعة السمنت == Study and Development of Electrohydraulic Clinker Cooler Servo System for Cement Industry

Author name: زيد عبد الجاسم محيسن جاسم
Supervisor name: ماجد احمد عليوي
General topic: Control and Systems Engineering
Specific topic: Mechatronics Engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering
Language: English
University location: Baghdad
First pages:

مسيطر كيناماتيكي امثل وذكي لتعقب المسار الروبوت المتنقل ذو العجلتين == Optimized intelligent kinematic Controller to the Wheeled Mobile Robot for Trajectory Tracking

Author name: محمد خزعل حمزة
Supervisor name: محمد جاسم محمد
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering - Control Engineering Branch
Language: English
University location: Baghdad
First pages:

تصميم مسيطر ذكي لروبوت اعادة تاهيل الاطراف البشرية السفلية == Intelligent Controller Design of Rehabilitation Robot for Lower Limb Movements

Author name: شهد صبيح غنتاب
Supervisor name: محمد يوسف حسن
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering - Control Engineering Branch
Language: English
University location: Baghdad
First pages:

تصميم مسيطر متين قطري وغير قطري للانظمة متعددة المداخل والمخارج == Robust Diagonal and Nondiagonal Controllers Design for MIMO Systems

Author name: محمد فاضل هادي
Supervisor name: حازم ابراهيم علي
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering - Control Engineering Branch
Language: English
University location: Baghdad
First pages:

تصميم مسيطر ذكي لسرعة محرك احتراق داخلي == Design of Intelligent Controller for Speed of Internal Combustion Engine (ICE)

Author name: بسمة عبد الله عباس
Supervisor name: طلال عبد الجبار عبد الوهاب | صباح عبد اللطيف نصيف
General topic: Control and Systems Engineering
Specific topic: Mechatronics Engineering
Degree: Master
University: University of Technology - Department Of Electromechanical Engineering
Language: English
University location: Baghdad
First pages:

تصميم الشبكه العصبيه المتصاعدة للسيطره على موقع روبوت اعادة تاهيل العمود الفقري والاطراف البشرية السفلية == Spiking Neural Network for the Position Control of Human Lumbar Spine and Lower Limb Rehabilitation Robot

Author name: جنان جبار عبد الكريم
Supervisor name: محمد يوسف حسن
General topic: Control and Systems Engineering
Specific topic: Control and systems engineering
Degree: Master
University: University of Technology - Department Of Control And Systems Engineering - Control Engineering Branch
Language: English
University location: Baghdad
First pages:

تصميم وتنفيذ قناة المتكيفة لنظام الاتصالات المتنقلة باستخدام مصفوفة البوابات المنطقية المبرمجة == Design and Implementation of Adaptive Channel for M - ary Mobile Communication System Using FPGA

Author name: وسن سمير رشيد
Supervisor name: هادي طارش زبون
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Electronic Engineering
Degree: Master
University: University of Technology - Electrical Engineering Department - Electronic Engineering Branch
Language: English
University location: Baghdad
First pages:

تصميم و تصنيع هوائي شقي من النوع الجزئي لتطبيقات الاتصالات اللاسلكيه ثنائية النطاق الترددي == Design and Fabrication of Printed Fractal Slot Antennas for Dual - band Communication Applications

Author name: سيفان فهمي عبد الكريم
Supervisor name: جواد كاظم علي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Communications Engineering
Degree: Master
University: University of Technology - Electrical Engineering Department - Electronic Engineering Branch
Language: English
University location: Baghdad
First pages:

دراسة وتحليل الاظمحلال في قناة النظام الخلوي GSM == A study and analysis of fading in GSM mobile channel

Author name: علاء عدنان سليم
Supervisor name: عايد خلف السامرائي
General topic: Electrical, Electronic and Communications Engineering
Specific topic: Communications Engineering
Degree: Master
University: University of Technology - Electrical Engineering Department - Electronic Engineering Branch
Language: English
University location: Baghdad
First pages:

تصنيع مواد متوافقة احيائيا للعظام التعويضية باستخدام الليزر ووسائل تقليدية == Fabrication of Biocompatible Material for Bone Implants Using Laser and Conventional Means

Author name: هدیل فیاض عباس
Supervisor name: رائد عبد الوھاب اسماعیل | ولید خلف حمودي
General topic: Laser Science
Specific topic: Laser Applications in Physics
Degree: Master
University: University of Technology
Language: English
University location: Baghdad
First pages:
Abstract: The present work describes coating the titanium implants with biocompatible materials (ceramics or composites). Three techniques were implemented to materialize this work; these are : pulsed laser deposition, spray pyrolysis, and electrochemical deposition. In these techniques, the influence of deposition temperature, solution concentration, polymer and H2O2 addition, buffer layer sandwiching, and electrolytes combinations were tested. The obtained films’ properties were investigated by using Fourier Transform Infrared Spectroscopy (FTIR), Atomic Force Microscope (AFM), Optical Microscope, X - ray Diffraction (XRD), Scanning Electron Microscope (SEM), Vickers’ hardness instrument, and Simulated Body Fluid (SBF).Composite films prepared by pulsed laser deposition showed the formation of polycrystalline hydroxyapatite of low crystallinity due to the addition of polymeric shrimp crusts. These films had (80 - 90 nm) spherical grains and constitute only (20 - 25%) of the favorable range (80 - 200 nm), and good hardness (≈550 HV). Pure hydroxyapatite (ceramic) films had (11 - 15 nm) surface roughness and an average grain size of (48 - 65 nm) which represents (7 - 31%) of the favorable range. All these films were porous, have good adhesion, and uniform surface morphology. Best results of pulsed laser deposition technique were obtained at 125oC deposition temperature. Films prepared by spray pyrolysis showed porous polycrystalline A and B - type carbonated hydroxyapatite and single crystalline α - Ca3(PO4)2; of relatively low crystallinity and hardness increased with deposition temperature. Post annealing at 400oC and 800oC for film prepared at 350°C of (0.0325 M) solution concentration has raised the hardness from 222 HV to 488 HV and 1204.25 HV respectively. The films of (0.0325 M) solution concentration had (101 - 105 nm) average grain size and were (78 - 100%) of the favorable range, whereas the films of (0.0406 M) solution concentration had (92 - 96 nm) and made (74 - 100%) of the favorable range. Good bioactivity and adhesion strength were obtained from these films which were enhanced significantly after post annealing. Optimum results were obtained from films prepared at 350oC of (0.0325 M) solution concentration after post annealing. Films prepared by electrochemical deposition technique showed uniform and highly porous polycrystalline B - type carbonated hydroxyapatite and polycrystalline α - Ca3(PO4)2. These films had an average grain size of (66 - 93 nm) when prepared from ((NH4)2HPO4 and Ca(NO3)2) whereas the grain size was (87 - 118 nm) when prepared from (Na3PO4 and Ca(NO3)2) with low roughness values. They had (45 - 68%) and (64 - 87%) respectively of the useful grain size in the favorable range (80 - 200 nm). The films covering area increased after H2O2 addition. These films had poor adhesion but this slightly improved together with the roughness after a buffer layer was deposited.The composite films had low crystallinity, grain size, hardness, and poor adhesion. Films prepared at 70oC from both electrolytes combinations ((NH4)2HPO4 with Ca(NO3)2, and Na3PO4 with Ca(NO3)2) had the best surface morphology and crystallinity with an optimum hardness (≈475HV). All these films had very fast dissolution rate in Simulated Body Fluid. Spray pyrolysis deposition technique proved to be the most promising technique for biocompatible materials fabrication for bone implants requirement

فعالية المضاد البكتيري لاكاسيد المعادن النانوية المحضرة بواسطة الاستئصال بالليزر في سائل == Antibacterial Activity of Metals Oxide Nanoparticles Induced by Laser Ablation in Liquid

Author name: فرح عبد الكريم عبد الامير
Supervisor name: خولة صلاح خشان | غسان محمد سلمان
General topic: Laser Science
Specific topic: Laser Applications in Physics
Degree: Master
University: University of Technology
Language: English
University location: Baghdad
First pages:
Abstract: With the increasing of bacterial resistance against antibiotics, nanoparticles studies was appeared together with growing need for substituting theseantimicrobial agents. Recently, it has been demonstrated that metal oxides nanoparticles exhibits bactericidal effect against both bacteria strains.In this research, three kinds of metal oxide nanoparticles (Nickel oxide, Copper oxide and Titanium dioxide) colloidal solutions synthesized using laser ablation of nickel, copper and titanium pellet immersed in de - ionized water. Pulsed Nd : YAG laser with 1٠٦٤ nm wavelength and different laser energies (40, 80, 120, 160 and 200 mJ) was used to irradiate the targets for various ablation times : 5 (75 pulse), 10 (150 pulse), 15 (225 pulse) and 20 min (300 pulse).The UV - Visible absorption spectrum of NiO nanoparticles exhibited broad bands whose intensity decreased continuously above ~210 nm. The UV - Visible absorption spectrum of the CuO nanoparticles solution showed absorption peak around ~275 nm and another peak with low intensity around ~645 nm. While absorption spectrum of TiO2 nanoparticles exhibited strong absorption domination on the spectrum below ~360 nm. In all three metal oxide nanoparticles, absorption intensity increased with the laser energy and ablation time due to increase nanoparticles concentrations in liquid. Fourier Transform Infrared spectroscopy characterization confirmed the formation of metal oxide nanoparticles. All three metal oxides nanoparticles gave absorption bands below ~600 cm−1 arising from inter - atomic vibrations. X - ray Diffraction pattern of nanoparticles proved the presence of (111), (200) planes which belong to NiO and ( - 111), (112) planes that assigned to CuO and (101), (112), ( - 403) planes that related to TiO2. TransmissionElectron Microscopy measurement showed NiO, CuO and TiO2 nanoparticles with nearly spherical shapes and sizes at 2 - 21 nm, 3 - 40 nm and 6 - 30 nm respectively.The antibacterial activity of nanoparticles carried out against four types of bacteria : Escherichia coli, Pseudomonas aeruginosa, and Proteus vulgaris (gramnegative bacteria), Staphylococcus aureus (gram - positive bacteria) firstly by liquid medium method. 1000 μg ml - 1 concentration was the best - used concentration of nanoparticles for inhibiting growth of both bacteria strains. Among the three tested types of nanoparticles (NiO, CuO and TiO2) at highest concentration (1000 μg ml - 1), TiO2 NPs showed the highest antibacterial activity against Escherichia coli and Pseudomonas aeruginosa. NiO NPs showed the highest antibacterial activity against Staphylococcus aureus while CuO NPs showed the highest antibacterial activity against Proteus vulgaris. Results also indicated that metal oxide nanoparticles and amoxicillin would have a synergistic effect on inhibiting of bacterial growth. Amoxicillin showed inhibitory rate about 74.8% against Escherichia coli and 76.28% against Staphylococcus aureus. In the case of NiO, CuO and TiO2 nanoparticles at concentration 1000 μg ml - 1 with Amoxicillin, antibacterial activity of Amoxicillin enhanced to about 81.5%, 90% and 81.9% against Escherichia coli and to about 86.9%, 91% and 90.7% against Staphylococcus aureus. Therefore, CuO nanoparticles and amoxicillin have the best synergic effect on inhibiting both bacteria strains. The antibacterial activity of the three metal oxides nanoparticle combined with Amoxicillin was also tested by well diffusion method against Escherichia coli and Staphylococcus aureus. In this method, CuO NPs at concentration 1000 μg ml - 1 along with Amoxicillin showed the highest inhibition zone against Escherichia coli (26.0±1.00 mm), while showed complete inhibition of bacteria against Staphylococcus aureus.

تاثير اضافة الكالسيوم على البنية المجهرية والخواص الميكانيكية لسبيكة Al - Cu - Mg == Effect of Ca Addition On The Microstructure And Mechanical Properties of Al - Cu - Mg Alloys

Author name: نور صباح توفيق
Supervisor name: منذر محمد راضي
General topic: Production engineering metallurgy and materials
Specific topic: Metals Engineering
Degree: Master
University: University of Technology
Language: English
University location: Baghdad
First pages:
Abstract: في هذه الرسالة تم دراسة تاثير اضافة عنصر الكالسيوم بنسب مختلفة ) 3.0 المجهرية والخواص الميكانيكية لسبيكة) المنيوم - نحاس - مغنيسيوم ( , حيث تم انتاج هذه السبائك باستخدام والتي تتضمن )المعاملة المحلولية, )? السباكة الرملية وعوملت حراريا باستخدام المعاملة ا | In this thesis ,the effect of pure Ca element addition in different percents of (0.3,0.6,0.9%) on the mechanical properties of Al - Cu - Mg alloy were studied.The Alloys were produced using sand casting and heat treated using T6 which involve [solution treatment , quenching , artificial aging ], aging process were carried out at 220? C for different periods of time ranging between (5min to5hr).Also the work involves a study on the effect of Ca addition on both grain size as well as the resulting phases before and after heat treatment, samples were examined using optical microscope, Scanning Electron microscope ,X - Ray diffractometer and image - J to estimate the average grain size.The results of hardness and tensile tests for 0.6% Ca and 4hr aging shows the best response as compared to the other alloys. The hardness and strength values have been changed from (78.29HV)(110.57Mpa) during (30min)at 220?C for non - Ca content alloy to(125.9HV)(164.2Mpa) for 0.6%Ca alloy. X - Ray diffraction , results shows the basic phase that forms is Al2CuMg (S??, S? phase) which is considered as the main strengthening phase in AL alloys, and it was found that Ca addition leads to form (Al4Ca) and (Al2Ca)which delay the alloy response to precipitation hardening by delaying the formation of (S)phase. SEM images showed a large and small dimple structure and broken or cracked Al - Ca compounds particles.This indicates that the fracture was ductile fracture in the Al matrix and brittle in these compounds ,.Also presence of microvoids (porosity) on the fracture surface is formed at the interfaces between Ca compounds and Al matrix enhanced the crack propagation through their center. The presence of the secondary phases precipitates (Al2CuMg ,Al2Ca and Al4Ca) in the fracture surface also contributed to ameliorate the mechanical properties by increasing the bonding of the matrix and reduced the ductility.Also Ca addition in the range of (0.3 - 0.6%) gives rise to grains refining ,While increasing Ca content up 0.9%wt coarsing the grains, which leads to decrease the hardness and tensile strength, From these results the decrease in tensile strength with increasing Ca content over 0.9% seems to be attributed to the reduction in elongation caused by the occurrence of micro porosity due to Ca addition.
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