Corrosion Protection of Heat Treated Carbon Steel Surfaces By Passivity in the Industrial Atmospheres
Corrosion Protection of Heat Treated Carbon Steel Surfaces By Passivity in the Industrial Atmospheres
Volume 28, Issue 20 , October 2010, Page 1017-1029

https://doi.org/10.30684/etj.28.20.20

Abstract
  The object of this research is to study the passivity of surfaces of heat treated medium carbon steel (CK45) by annealing, spheroidise annealing, normalising, and water hardening. This ...  Read More ...
Design Bragg Reflectors Consisting of Quarter-Wave Stack and Impedance Matching Concept
Design Bragg Reflectors Consisting of Quarter-Wave Stack and Impedance Matching Concept

Adawiya J.Haidar; Kassim S.Kassim; Gailan H. Abdullah

Volume 28, Issue 20 , October 2010, Page 6001-6009

https://doi.org/10.30684/etj.28.20.1

Abstract
  The control of the group delay and group delay dispersion in the design ofchirped mirror is difficult. To reduce this difficult it is important to adopt what isso called impedance matching ...  Read More ...
Energy and Exergy Analysis of the Crude Oil Fractionation Units
Energy and Exergy Analysis of the Crude Oil Fractionation Units

Majed Yousif.Khamo; Adel Sharif. Hamadi

Volume 28, Issue 20 , October 2010, Page 6010-6019

https://doi.org/10.30684/etj.28.20.2

Abstract
  The petroleum refining industry is one of the largest users of distillationtechnology. The crude distillation unit is one of the most important refinery operationsfractionating preheated ...  Read More ...
Environmental Site Assessment of Al-Daura Refinery - Evaluation of Soil Pollution with Petroleum Products
Environmental Site Assessment of Al-Daura Refinery - Evaluation of Soil Pollution with Petroleum Products

MahmoodM. Barbooti; Adel Sharif Hamadi; Alia Abdul-Razzaq; Jinan Hussain

Volume 28, Issue 20 , October 2010, Page 6020-6034

https://doi.org/10.30684/etj.28.20.3

Abstract
  The environmental site assessment (ESA) of Al-Duara refinery in Baghdad, Iraq.The hydrocarbon content of the soil around this site was measured to evaluate theextent of the organic ...  Read More ...
Distributed Generation Embedded In the Iraqi Power Grid
Distributed Generation Embedded In the Iraqi Power Grid

Qais Matti Alias; Wael A. Jaafar

Volume 28, Issue 20 , October 2010, Page 6035-6049

https://doi.org/10.30684/etj.28.20.4

Abstract
  Recently, there has been great interest in the integration of distributedgeneration units at the distribution level. This requires new analysis tools forunderstanding system performance. ...  Read More ...
An Adaptive Fuzzy Inference System for 3-Phase Synchronous Generator Excitation Control
An Adaptive Fuzzy Inference System for 3-Phase Synchronous Generator Excitation Control

Fadhil A. Hassan; Lina J. Rashad; Fatma H. Faris

Volume 28, Issue 20 , October 2010, Page 6050-6060

https://doi.org/10.30684/etj.28.20.5

Abstract
  This paper proposes the excitation system control of three phasesynchronous generator for improving the step response using an adaptive fuzzycontroller. The dynamic model and simulation ...  Read More ...
The Optical and Structural Properties of ZnO Films Prepared by Spray Pyrolysis
The Optical and Structural Properties of ZnO Films Prepared by Spray Pyrolysis

Shatha Shammon Batros Jamil

Volume 28, Issue 20 , October 2010, Page 6061-6073

https://doi.org/10.30684/etj.28.20.6

Abstract
  Zinc oxide (ZnO) thin film have been prepared by Spray Pyrolysis technique using zinc acetate dehydrate dissolved in methanol, ethanol and deionized water. A number of techniques including ...  Read More ...
Modeling the Effect of Operation Temperature on Characteristics of Rosen Type Piezoelectric Transformer
Modeling the Effect of Operation Temperature on Characteristics of Rosen Type Piezoelectric Transformer

Nabil N. Rammo; Rajaa R. Abbas; Talib R. Abbas; Inmar N. Ghazi

Volume 28, Issue 20 , October 2010, Page 6074-6083

https://doi.org/10.30684/etj.28.20.7

Abstract
  A simplified lumped model that makes direct correlation between Rosen'spiezoelectric transformer (PT) dimensions and material properties via equivalentcircuit parameters was studied. ...  Read More ...
New Approach for Modifying DES Algorithm Using 4-States Multi-keys
New Approach for Modifying DES Algorithm Using 4-States Multi-keys

Rehab F. Hassan

Volume 28, Issue 20 , October 2010, Page 6084-6090

https://doi.org/10.30684/etj.28.20.8

Abstract
  Within the last decade, there has been a vast increase in the accumulationand communication of digital computer data in both the private and public sectors.Much of this information ...  Read More ...
Modeling and Dynamic Performance Analysis of PMBLDC Motor
Modeling and Dynamic Performance Analysis of PMBLDC Motor

Jamal A. Mohammed

Volume 28, Issue 20 , October 2010, Page 6091-6107

https://doi.org/10.30684/etj.28.20.9

Abstract
  Permanent Magnet Brushless DC (PMBLDC) motors are one of the electricaldrives that are rapidly gaining popularity, due to their high efficiency, good dynamicresponse, high mechanical ...  Read More ...
Bernstein Polynomials Solving One Dimensional Delay Volterra Integro Differential Equations
Bernstein Polynomials Solving One Dimensional Delay Volterra Integro Differential Equations

Shymaa Hussain Salih

Volume 28, Issue 20 , October 2010, Page 6108-6114

https://doi.org/10.30684/etj.28.20.10

Abstract
  The main purpose of this paper lies briefly in submitting least squaremethod for solving linear delay Volterra integro differential equation of the second kind containing three types ...  Read More ...
Optimization Conditions for Preparation Of Polyvinyl Alcohol- Alumina Gel Composite and its Properties
Optimization Conditions for Preparation Of Polyvinyl Alcohol- Alumina Gel Composite and its Properties

Raghad U. Abass

Volume 28, Issue 20 , October 2010, Page 6115-6127

https://doi.org/10.30684/etj.28.20.11

Abstract
  A preparation of poly (vinyl alcohol) (PVA)/alumina (Al 2O3) gelcomposite was investigated.This type of composite gel was carried out with two stages firstly thehydrolysis of polyvinyl ...  Read More ...
Data Acquisition of TiO2 for Optical Material by using Spectroscopic Ellipsometry Technique
Data Acquisition of TiO2 for Optical Material by using Spectroscopic Ellipsometry Technique

Asad Sabih Mohammad Raouf

Volume 28, Issue 20 , October 2010, Page 6128-6139

https://doi.org/10.30684/etj.28.20.12

Abstract
  An Ellipsometric experimental set up of SOPRA ES4G type with a powerfulWVASE software for the theoretical calculus of the Ellipsometry parameters. TheEllipsometry Technique can determine ...  Read More ...
A Theoretical Study of the Dynamical Behavior of SQW GaAs/AlGaAs Laser
A Theoretical Study of the Dynamical Behavior of SQW GaAs/AlGaAs Laser

Azhar I. Hassan

Volume 28, Issue 20 , October 2010, Page 6140-6148

https://doi.org/10.30684/etj.28.20.13

Abstract
  In this work, the peak modal gain and the radiative and Nonradiativecurrent densities for Single Quantum Well (SQW) GaAs/AlGaAs laser are studied theoretically with varying the well ...  Read More ...
Histological and Functional study of white male mice testes and kidney treated with Tecrium Polium aqueous extract
Histological and Functional study of white male mice testes and kidney treated with Tecrium Polium aqueous extract

Wasnaa Hatif Mohammed

Volume 28, Issue 20 , October 2010, Page 6149-6157

https://doi.org/10.30684/etj.28.20.14

Abstract
  The oral administration of the aqueous extract of Teucrium polium to amature male mice in daily oral doses of 50 mg/kg body weight (group II) and 100mg/kg body weight (group III) for ...  Read More ...
Removal of Copper Ions From Wastewater By Multi Stage Flotation
Removal of Copper Ions From Wastewater By Multi Stage Flotation

Neran K. Ibrahim; Tagreed L; Nagham A.Ageena

Volume 28, Issue 20 , October 2010, Page 6158-6170

https://doi.org/10.30684/etj.28.20.15

Abstract
  Removal of heavy metals from wastewater is of primary importancebecause they are not only causing contamination of water bodies but are also toxic to many life forms. One potential ...  Read More ...
Parameterization Techniques for Quadratic Continuous Optimal Control Problems
Parameterization Techniques for Quadratic Continuous Optimal Control Problems

Saba S. Hasan; Falah A. Khalaf; Jabbar A. Eleiwy

Volume 28, Issue 20 , October 2010, Page 6171-6181

https://doi.org/10.30684/etj.28.20.16

Abstract
  The main purpose of this work is to propose the parameterization techniques for solving quadratic optimal control (OC) problem with aid of both Chebyshev and Hermite Polynomials as ...  Read More ...
Approximate Solution For Multi Dimensional Delay Fredholm Integro Partial Differential Equation By Using B.Spline Polynomials
Approximate Solution For Multi Dimensional Delay Fredholm Integro Partial Differential Equation By Using B.Spline Polynomials

Shymaa Hussain Salih

Volume 28, Issue 20 , October 2010, Page 6182-6187

https://doi.org/10.30684/etj.28.20.17

Abstract
  The main purpose of this work is to devote B.spline with two variablesas basis functions to find approximate solution of Multi dimensional delayfredholm integro partial differential ...  Read More ...
Detect And Locate Buried Pipes Using Ground Penetration Radar
Detect And Locate Buried Pipes Using Ground Penetration Radar

Ahmed Fouad Nashait

Volume 28, Issue 20 , October 2010, Page 6188-6200

https://doi.org/10.30684/etj.28.20.18

Abstract
  Data collection using traditional methods for detecting and mappingsubsurface features can be need more time consuming and costly. Beside that thegeological research project and Job ...  Read More ...
Development of Low Cost Filter Banks for Audio Applications
Development of Low Cost Filter Banks for Audio Applications

Saad H. Abdulrazaq

Volume 28, Issue 20 , October 2010, Page 6201-6214

https://doi.org/10.30684/etj.28.20.19

Abstract
  An approach for low cost uniform and octave filter banks for Audio applicationsis proposed. The analysis stages of these filterbanks are based on IIR allpass secondorder sections with ...  Read More ...