Studying Effect of Adding Nickel to Al-Cu Alloy Before and After Heat Treatment
Studying Effect of Adding Nickel to Al-Cu Alloy Before and After Heat Treatment
Volume 28, Issue 5 , February 2010, Page 122-139

https://doi.org/10.30684/etj.28.5.15

Abstract
  In this research, the effect of adding pure nickel element in different amountsAl-4%Cu-1.5%Mg) has been studied it (to molten alloy (1-2-3-5%wt)making the heat treatment (T6) which ...  Read More ...
Analytical Criticizing Study of Contract Conditions for Civil Engineering Works, Issued by the Ministry of Planning and Developing Cooperation at 2007
Analytical Criticizing Study of Contract Conditions for Civil Engineering Works, Issued by the Ministry of Planning and Developing Cooperation at 2007
Volume 28, Issue 5 , February 2010, Page 140-156

https://doi.org/10.30684/etj.28.5.16

Abstract
  For the important role of (Contract Conditions for Civil EngineeringWorks) as a principal contractual document, that regulates rights, duties, anddelegations of the Client, the Contractor, ...  Read More ...
Study on Heat Transfer of (Al-Mg) Alloy Fabricated By Centrifugal Casting
Study on Heat Transfer of (Al-Mg) Alloy Fabricated By Centrifugal Casting
Volume 28, Issue 5 , February 2010, Page 157-169

https://doi.org/10.30684/etj.28.5.17

Abstract
  A Fortran 90 computer program was build to study the heat transfer in twodimensions (2-D) using explicit finite difference method for (Al-4.5%Mg) alloy.This alloy was produced by horizontal ...  Read More ...
Study on the properties of composite materials produced by centrifugal casting
Study on the properties of composite materials produced by centrifugal casting
Volume 28, Issue 5 , February 2010, Page 170-189

https://doi.org/10.30684/etj.28.5.18

Abstract
  The aim of this work is to use centrifugal casting process in production ofcomposite materials reinforced in selected regions, and study the effect of processparameters on the microstructure ...  Read More ...
The Influence of Sudden Cross Section Change on Two Phase Flow Characteristics
The Influence of Sudden Cross Section Change on Two Phase Flow Characteristics
Volume 28, Issue 5 , February 2010, Page 190-202

https://doi.org/10.30684/etj.28.5.19

Abstract
  This research study the influence of the solid loading ratio & Reynolds number onminor losses coefficient and pressure coefficient for sudden expansion region fortwo-phase flow ...  Read More ...
Study of Polymer Quenchants Effect on Some Properties of Low Alloy Steel Type (St37)
Study of Polymer Quenchants Effect on Some Properties of Low Alloy Steel Type (St37)
Volume 28, Issue 5 , February 2010, Page 203-216

https://doi.org/10.30684/etj.28.5.20

Abstract
  This study is concerned with the effect of polymer quenching on someproperties of low alloy steel type (St37). Three different operations of heattreatment have been done including quenching, ...  Read More ...
Thin RC Shell-Slab Roofing System with Steel Rod Connections
Thin RC Shell-Slab Roofing System with Steel Rod Connections

Husain M. Husain; Ashraf. A. Al-Feehan

Volume 28, Issue 5 , February 2010, Page 851-870

https://doi.org/https://doi.org/10.30684/etj.28.5.1

Abstract
  An innovated structural system, namely the Shell-Slab Roofing System(SSRS) of precast thin reinforced concrete cylindrical shell and flat slab has beenfabricated as a roof segmental ...  Read More ...
Excitation and Governing Control of a Power Generation Based Intelligent System
Excitation and Governing Control of a Power Generation Based Intelligent System

Adil H. Ahmad; Lina J. Rashad

Volume 28, Issue 5 , February 2010, Page 871-889

https://doi.org/10.30684/etj.28.5.2

Abstract
  Modern power systems are complex and non-linear and their operating conditionscan vary over a wide range. In this work, the power system (PS) transient terminalvoltage and frequency ...  Read More ...
An Attitude Navigation System Based on the GPS
An Attitude Navigation System Based on the GPS

Saad A-R. Makki; Mushtaq Talib Abd

Volume 28, Issue 5 , February 2010, Page 890-907

https://doi.org/10.30684/etj.28.5.3

Abstract
  In this paper, the use of multi-GPS receiver to estimate the parameters ofattitude (orientation) of a platform is developed. The GPS receiver has twomeasurements; pseudorange and carrier ...  Read More ...
Microstructural Characterization of Electroformed Nickel and Its Composites
Microstructural Characterization of Electroformed Nickel and Its Composites

Sabah S. Abdulnoor; Mofeed A. L. Jaleel

Volume 28, Issue 5 , February 2010, Page 908-917

https://doi.org/10.30684/etj.28.5.4

Abstract
  In the present work the nickel metal matrix was developed by electrochemicalforming technique, were the nickel matrix is built around the reinforced carbonfiber in various thicknesses ...  Read More ...
An Approximate Solutions of Fuzzy Linear Fredholm Integral Equations
An Approximate Solutions of Fuzzy Linear Fredholm Integral Equations

Nuha Abduljabbar Rajab; Mazin Hashim Suhhiem

Volume 28, Issue 5 , February 2010, Page 918-924

https://doi.org/10.30684/etj.28.5.5

Abstract
  The main aims of this paper are studying and modifying an approximate to solvefuzzy linear integral equations of Fredholm type.Two different Kinds of fuzzy functions are used to transform ...  Read More ...
An Experimental Investigation of Some Relevant Process Parameters Affecting Formed Thickness in ISMF Process
An Experimental Investigation of Some Relevant Process Parameters Affecting Formed Thickness in ISMF Process

Wei-Xin Ren; Jamal H. Mohamed; Wissam K.H. Sarraji

Volume 28, Issue 5 , February 2010, Page 925-940

https://doi.org/10.30684/etj.28.5.6

Abstract
  In this paper, a systematic approach to investigate the effect of some relevantprocess parameters on thickness variation aspect in incremental sheet metal forming(ISMF) process has ...  Read More ...
Data Hiding in Audio File by Modulating Amplitude
Data Hiding in Audio File by Modulating Amplitude

Loay. A. Jorj; Hilal H. Saleh; Nidaa F.Hassan

Volume 28, Issue 5 , February 2010, Page 941-952

https://doi.org/10.30684/etj.28.5.7

Abstract
  In this paper, two methods of a steganography are introduced for hidingsecret data in audio media file (.WAV). Hiding in audio becomes a challengingdiscipline, since the Human Auditory ...  Read More ...
VHDL Implementation of Hybrid Block Cipher Method (SRC)
VHDL Implementation of Hybrid Block Cipher Method (SRC)

Ashwaq T. Hishem; Najwa M. Hassen; Ekhlas M. Farhan

Volume 28, Issue 5 , February 2010, Page 953-963

https://doi.org/10.30684/etj.28.5.8

Abstract
  This paper discusses the hardware design of the hybrid block cipher methodthat combines the RC6 cipher and the Serpent cipher.The block size is 128 bits, and the key can be any length ...  Read More ...
Transmission System On –Line Fault Location Using ArtificialNeural Network
Transmission System On –Line Fault Location Using ArtificialNeural Network

Adil Hameed Ahmed; Hatim Ghadhban Abood

Volume 28, Issue 5 , February 2010, Page 964-979

https://doi.org/10.30684/etj.28.5.9

Abstract
  In this work, protection systems for overhead transmission lines areinvestigated and an efficient technique for on –line fault location based onArtificial Neural Network(ANN ) ...  Read More ...
Mathematical Modeling of Artificial Kidney Function By Using Blood Samples In Patients With Renal Diseases
Mathematical Modeling of Artificial Kidney Function By Using Blood Samples In Patients With Renal Diseases

Zainab Ismail; Sumia Hamad

Volume 28, Issue 5 , February 2010, Page 980-991

https://doi.org/10.30684/etj.28.5.10

Abstract
  In Hemdialysis ,blood is pumped from the body to special filter (dialyzer ) madeof tiny plastic capillaries . the blood is purified when the waste products diffuse fromthe blood across ...  Read More ...
Characterization of Ni-Ti Shape Memory Alloys
Characterization of Ni-Ti Shape Memory Alloys

Sheelan R. Areef

Volume 28, Issue 5 , February 2010, Page 992-1000

https://doi.org/10.30684/etj.28.5.11

Abstract
  Master Samples NiTi (without additives) prepared using powder mixture of 55wt% Ni and 45 wt% Ti by; mixing in a ball mill for two hours, then compacted at 300,400, 500, 600, 700, and ...  Read More ...
The Treatment of Efficiency of NaI(Tl) Detector By Using Monte Carlo Simulation
The Treatment of Efficiency of NaI(Tl) Detector By Using Monte Carlo Simulation

A. B. Kadhem; A. N. Mohammed

Volume 28, Issue 5 , February 2010, Page 1001-1013

https://doi.org/10.30684/etj.28.5.12

Abstract
  An efficient Monte Carlo computer program for simulation and calculation of thetotal and full energy peak efficiency (absolute and intrinsic) of the cylindricalNaI(Tl)detector (with ...  Read More ...
D.C. Servo Position Control Parameter Estimation
D.C. Servo Position Control Parameter Estimation

Saad T. Kurdi; Nihad M. Ameen

Volume 28, Issue 5 , February 2010, Page 1014-1023

https://doi.org/10.30684/etj.28.5.13

Abstract
  Open-loop and closed-loop position control systems are obtained using dcmotor. The open-loop uses an estimation of controller parameters to perform theposition control where the closed ...  Read More ...
Combined Hierarchical Wavelet-Coefficient Structures For Grayscale Image Compression
Combined Hierarchical Wavelet-Coefficient Structures For Grayscale Image Compression

T. M. Al-juboori; Viktar Yu. Tsviatkou; Anatoly A. Boriskevich

Volume 28, Issue 5 , February 2010, Page 1024-1037

https://doi.org/10.30684/etj.28.5.14

Abstract
  A suitable algorithm suggested with wavelet compression for gray scaleimages based on one- and two-dimension combined hierarchical structure, in thesub-band which has been generated ...  Read More ...