The present study has been carried out to investigate numerical study of temperature profile for finned plate with different boundary conditions. For many practical heat transfer problems it is not possible to obtain a solution by means of analytical techniques. Instead, Solving them requires the use of numerical methods, which in many cases allow such problems to be solved quickly.
Urine assay is the preferred method for monitoring accidental or chronic internal exposure of uranium in human body. In the present study, two typical methods have been used for determination of uranium in human urine for occupational mining workers and residents of selected regions in Iraq. The main technique is kinetic phosphorescence analysis (KPA).
This thesis was including study the effect of different concentration (X=0.1,0.2,0.3,and 0.4), thickness, t (200-500)nm ,and substrate temperature ,T (300-393)K on the structural and electrical properties for CdXSe1-Xs thin films ,which prepared by thermal evaporation on glass substrate under vacuum of (2 2 ×10 -5 mbar), and studying the mechanism of transition for the d.c conductivity and a.c conductivity.
Acousto-optics science deals with the interaction between sound and light waves. Acousto-optic waves are most important in transferring signals through the communication systems, since modulating signals takes a great advantages in the field of communication engineering, bio-medical, laser beam deflection and laser intensity modulation. The aim of this work is to simulate the fundamentals of an Acousto-Optic Modulator.
A theoretical and computational investigation was carried out in the field of laser-plasma interaction using the Finite Difference Method to study the acceleration of electrons with non-relativistic elocities in a non-magnetized and magnetized collisionless plasmas.First, a (Nd:YAG) laser pulse of 25 fs duration and 5x10 intensity was assumed in the present study.When this laser pulse was allowed to nteract with a stationary electron in vacuum, it was found that the electron is accelerated during the interaction only and returns to stationary state af
Many applications in industry, depends on dissimilar material joints.Due to the difference in chemical, mechanical and thermal behaviors of materials, the joining of dissimilar materials presents a challenges, significantly different than similar materials joining [1]. Bonding as a subdivision of both solid-state and liquid-phase welding, is a joining process wherein the principal mechanism is interdiffusion of atoms across the interface.
The aim of this research is simulate an optical system for the human eye using Genetic algorithm. The considered optical characteristics of the optical system simulator include spot size (Z), spot diagram, and effective focal length (EFL). These characteristics are determined with the aid of some mathematical relations, which give the efficiency and accuracy of the adopted optical system design. The work has been performed in two stages:
This project investigates the detection and evaluation of imperfections in internal structures of castings and welded joints by x-ray radiography. Optimum radiography conditions that lead to clear and high
The calculation of the value of stopping power and the range for the proton is done by two ways : first, using Bethe-Bloch formula and second, using Bragg-Kleeman rule. The differences between the experimental and theoretical values of stopping power and range required studying the corrections for Bethe-Bloch formula which are represented by the maximum energy and density correction and then comparing the results with experimental values.
The aim of this study is to detect the radioactivity of radionuclides and measure the specific activities and the uranium concentration in (30) samples of crude oil and oil waste were brought from three oil locations Dora refinery, Bijie refinery, and north field of al-Rumaila.The measurements in this study were done by using two techniques:
