1. الرئيسية
  2. Thesis

Thesis

Maximum Power Point Tracking approach based on Temperature for PV Surfaces using PSPICE program

     This research study the effect of Photovoltaic surface temperature on Photovoltaic panel output characteristics. First,circuit simulator PSPICE was used to compose Photovoltaic panel model at 75 W, 4.8 A and 21 V. Then, study the behavior of it under varying conditions (solar insolation, environmental temperature and PV panel surface temperature). ABM feature of PSPICE was used to include the above rameters in PV PSPICE model and produced temperature dependent voltage.

إنجليزية

Studying the Effects of He-Ne Laser Beam and Gamma Radiation on CR-39 Detectors Irradiated by α-particles Using Some Spectroscopy Techniques

    The aim of the present work was to study the effect of alpha-particles, gammarays and (He-Ne) laser beam on the track registration and optical properties of  CR-39 detectors. Twenty-four detectors divided into five groups. First group:include nine detectors  were exposed to different powers of (1, 5 and 10 mW) of laser beam at  times (5, 10 and 15 min) and then irradiated to alpha-particles from 226 Ra source.

عربية

Development and Optimization of Stand off Explosive Material Detection System

In order to develop a effected method to reveal the presence of  explosive, numerous detection techniques have been studied that are capable of detecting explosives, The current study provides an overview of the present  techniques like LIBS which is an atomic spectroscopy, and examined  a new technique for detecting called laser induced fluorescence (LIF). LIF essentially measures the optical emission of the excited energetic materials by laser.

إنجليزية

A Study of Gamma Ray Dose Buildup Factors in Water and Graphite, in the Energy Range (4-10) MeV

Several studies have been conducted to measure different type of gamma ray buildup factor for its importance in measuring the dose resulting from Electromagnetic rays use and its shielding In this study gamma ray buildup factor for two shielding materials water (Zeff =7.42) and graphite (Z=6) within the energy range 4-10 MeV and up to 5 thickness mean free path has been studied.

إنجليزية

Construction and Characterization of BNT-BKT-BT Piezoelectrics for Energy Harvesting

Lead-free piezoelectrics are non-toxic, cheap and environmental friendly materials. Among them Bismuth Sodium Titanate (BNT) which has the chemical formula Bi 0.5 Na 0.5 TiO  with a complex A-site perovskite structure. In this study, some modifications on BNT were used to help in applications by forming solid solution with Bi 3 0.5 K 0.5 TiO 3 (BKT) and BaTiO (BT). The BNTbased (xBNT-yBKT-zBT)

إنجليزية

Design and Fabrication of Antireflection ZnO Thin Film by Using Different Techniques

In this work single layer antireflection coating of ZnO thin film has been designed and fabrication on glass and PSi substrates using pulse laser ablation (PLA) and spin coating techniques.Mainly, the work, divided into two parts, first: single antireflection of ZnO thin film using modified characteristics matrix to satisfy zero reflection condition theoretically.

إنجليزية

Preparation of Novel High Temperature Superconductor Compounds (Cu-1223 and Sn-1223) From Hg-1223

The main problem is the replacing of Hg atom by covalent atoms such as (Cu,Sn) atoms in the compound ((H )B C C ) by consider (x=0-1). Firstly, the high temperature superconductor of (HgB C C ) Hg-1223 had been synthesized experimentally by solid state reaction. The high temperature superconductor (CuB C C ) Cu-1223, (SnB C C ) Sn-1223 had been synthesized by solid state reaction.There are many parameters affected the preparation technique such as flow of oxygen, sintering temperature and compacted pressure.

إنجليزية

Physical Properties of PMMA/ZnO Composite Material

          This project involves the studying of both optical and electrical properties for the poly methyl methacrylate/zinc oxide composite. These materials were selected because they have an industrial applications and available in local market.Zinc oxide powder with different concentration (4, 8, 10 and 12) % from the total weight was mixed carefully with PMMA.

إنجليزية

Preparing and Studying Nano Silver Particles and Their Anti Bacterial Effect

The target of this research is to prepare nano silver particles by laser ablation in both deionized and magnetized water. The properties of nano silver particles and their bacterial effects with different parameters’ were studied. The magnetic water was laboratory preparing by square magnets with magnetic flux of 200 mT applied on the deionized water which pass through it 10ns Q.swiched Nd-YAG  laser of wave length 1064nm with different energies and different laser pulses number were used with and without applied electric field.

إنجليزية
المزيد