Influence of Heat Treatment on Hardness And Microstructure of High Chromium Iron Alloy
Influence of Heat Treatment on Hardness And Microstructure of High Chromium Iron Alloy
Volume 28, Issue 6 , March 2010, Page 217-228

https://doi.org/10.30684/etj.28.6.19

Abstract
  This work deals with production of different sizes of grinding balls from high-Cr-iron alloy . Cr contents range between (14-16) wt% carbon content (2.1-2.4)wt% and Mo content (0.3-0.4)wt% ...  Read More ...
Friction Stir Welding Of Porous Al-Si Alloy
Friction Stir Welding Of Porous Al-Si Alloy
Volume 28, Issue 6 , March 2010, Page 229-243

https://doi.org/10.30684/etj.28.6.20

Abstract
  The aim of this research is to study the ability of joining porous (Al-Si) alloy tosolid Aluminum using Friction Stir Welding Method . The porous alloy is fabricateusing casting method ...  Read More ...
A Numerical And Experimental Study of Louvered Fin Heat Exchanger Performance
A Numerical And Experimental Study of Louvered Fin Heat Exchanger Performance

Jalal M. Jalil; Aamer Al. Dabagh; Assel Kh. Shyaa

Volume 28, Issue 6 , March 2010, Page 1038-1049

https://doi.org/10.30684/etj.28.6.1

Abstract
  The louvered fin heat exchanger is a very widely used method to increase thecompact heat transfer coefficient on the air-side of condensers by adding fins andinitiating new boundary ...  Read More ...
Optical and Optoelectric Properties in PbCdS Ternary Thin Films Deposited by CBD
Optical and Optoelectric Properties in PbCdS Ternary Thin Films Deposited by CBD

J. P. Ponpon; Ali M. Musa; Modaffer A. Mohammed

Volume 28, Issue 6 , March 2010, Page 1050-1060

https://doi.org/10.30684/etj.28.6.2

Abstract
  PbxCd1-xS films have been prepared in the composition range of 0.05£ x£0.25by using a chemical bath deposition growth technique under optimum conditionsto deposit good photo ...  Read More ...
A New Attack on NTRU Public Key Cryptosystem Depend on Using Public Key and Public Information
A New Attack on NTRU Public Key Cryptosystem Depend on Using Public Key and Public Information

Abdul Monem S.Rahma; Qasim Mohammed Hussein

Volume 28, Issue 6 , March 2010, Page 1061-1072

https://doi.org/10.30684/etj.28.6.3

Abstract
  This paper proposed a new method to attack the NTRU cryptosystem [Hof00a,Hof98b]. It tried to exploit the public information about the parameters of NTRUcryptosystem and using the public ...  Read More ...
Cement Kilns Dust Management In Iraq
Cement Kilns Dust Management In Iraq

Adnan A. Al-Samawi; Mohammed Ali I. Al-Hashimi; Sabah Obaid Hamad Al-Shadeed

Volume 28, Issue 6 , March 2010, Page 1073-1093

https://doi.org/10.30684/etj.28.6.4

Abstract
  Hundred thousands tons of cement kiln dust (CKD) as well as other emissionsare generated annually from existing cement plants in Iraq with significanteconomic and environmental impacts. ...  Read More ...
Microstructural Modification of Al-base Composite by Friction Stir Processing
Microstructural Modification of Al-base Composite by Friction Stir Processing

Nawal Ezzat

Volume 28, Issue 6 , March 2010, Page 1094-1105

https://doi.org/10.30684/etj.28.6.5

Abstract
  A novel surface modifying technique, Friction Stir Processing, is used toenhance mechanical properties of Al-Si / Al2O3 composite, through microstructural refinement and homogenization. ...  Read More ...
The Structural Properties of Thick Film of PbI2
The Structural Properties of Thick Film of PbI2

Shatha Sh. Jamil; Ali M.Mousa

Volume 28, Issue 6 , March 2010, Page 1106-1116

https://doi.org/10.30684/etj.28.6.6

Abstract
  Polycrystalline layers of Lead iodide have been prepared using a solution growthmethod on glass substrates for potential application to nuclear detection .This paperreports on their ...  Read More ...
Design And Implementation of Intelligent Soft- Start Controller For Induction Motor Controlled By VSI
Design And Implementation of Intelligent Soft- Start Controller For Induction Motor Controlled By VSI

A. J. Al-Shammerie; K. S. Krikor

Volume 28, Issue 6 , March 2010, Page 1117-1127

https://doi.org/10.30684/etj.28.6.7

Abstract
  This paper presents a practical implementation of the Fuzzy logic control toan electrical drive system. The hardware control circuits are divided into two groups,the first one is to ...  Read More ...
Theoretical Aspects of some Mechanical Properties of Composites
Theoretical Aspects of some Mechanical Properties of Composites

Sabah S. AbdulNoor; Ahmad Al-Beiruti; Mustafa H. Nashat

Volume 28, Issue 6 , March 2010, Page 1128-1143

https://doi.org/10.30684/etj.28.6.8

Abstract
  In the present wok, two mathematical models are constructed in orderto define the detailed nature of composite. The first one is based on theclassical Rule of Mixtures, (RoM) which ...  Read More ...
Hûta Method for Solving nth Order State-Space Equations of Nonlinear Continuous-Time Control Systems
Hûta Method for Solving nth Order State-Space Equations of Nonlinear Continuous-Time Control Systems

Atheer Jawad Kadhim; Raghad Kadhim Salih

Volume 28, Issue 6 , March 2010, Page 1144-1159

https://doi.org/10.30684/etj.28.6.9

Abstract
  The paper presents a proposed method with new algorithms written inMatlab language to find the numerical solution of nth order state-space equations(SSE's) of nonlinear continuous-time ...  Read More ...
Numerical Study of Solidification in Cavity with the Presence of Natural Convection
Numerical Study of Solidification in Cavity with the Presence of Natural Convection

Wahid S. Mohammad

Volume 28, Issue 6 , March 2010, Page 1160-1168

https://doi.org/10.30684/etj.28.6.10

Abstract
  A study of Laminar two dimensional transient solidification with time –dependent natural convection in the melt is carried out. The mathematical modelfor the numerical simulation ...  Read More ...
Real Time Digital Speed Control System for DC Servo Motor Using LabVIEW 8.5 Package
Real Time Digital Speed Control System for DC Servo Motor Using LabVIEW 8.5 Package

Areej Alaa Hassen

Volume 28, Issue 6 , March 2010, Page 1169-1185

https://doi.org/10.30684/etj.28.6.11

Abstract
  This paper describes the design and implementation of a personal computerbased closed loop DC motor speed control system Using LabVIEW 8.5 Packagefor data manipulation and interface ...  Read More ...
Study the Adsorption Phenomena of Phenol from Industrial Wastewater using Commercial Powdered Activated Carbon by using Isotherm Models
Study the Adsorption Phenomena of Phenol from Industrial Wastewater using Commercial Powdered Activated Carbon by using Isotherm Models

Khalid Farhod Chasib Al-Jiboury

Volume 28, Issue 6 , March 2010, Page 1186-1195

https://doi.org/10.30684/etj.28.6.12

Abstract
  Adsorption studies for phenol removal from aqueous solution onto commercialPowdered Activated Carbon were carried out. Batch kinetics and isotherm studieswere carried out under varying ...  Read More ...
The Inhibitive Effect of BTA on The Corrosion of Copper Rotating Cylinder Electrode in Oxygenated 0.1M H2SO4 Under Controlled Conditions of Mass Transfer
The Inhibitive Effect of BTA on The Corrosion of Copper Rotating Cylinder Electrode in Oxygenated 0.1M H2SO4 Under Controlled Conditions of Mass Transfer

S. H. Alwash; I. K. Salih; Sh. A. Sameh

Volume 28, Issue 6 , March 2010, Page 1196-1208

https://doi.org/10.30684/etj.28.6.13

Abstract
  The inhibitive action of benzotrizole (BTA) on the corrosion of copper inoxygenated 0.1M sulfuric acid solution has been investigated using the rotatingcylinder electrode to provide ...  Read More ...
Preparing and Studying the Effect of HA and ZrO2 Addition on Fracture Strength of Dental Ceramic
Preparing and Studying the Effect of HA and ZrO2 Addition on Fracture Strength of Dental Ceramic

Hussein Alaa Jaber; Sinan Salman Hamde

Volume 28, Issue 6 , March 2010, Page 1209-1217

https://doi.org/10.30684/etj.28.6.14

Abstract
  This work aims at preparing and studying the effect of hydroxyapatite (HA)and zirconia (ZrO2) additions on some physical properties and fracture strength ofdental ceramic. In this work, ...  Read More ...
Numerical and Experimental Investigations of Welded Butt Joints of (AISI304)
Numerical and Experimental Investigations of Welded Butt Joints of (AISI304)

Muna. K. Abbass; Karima E. Amori; Rashaq A.Mohammed

Volume 28, Issue 6 , March 2010, Page 1218-1240

https://doi.org/10.30684/etj.28.6.15

Abstract
  Simulation of welding process (TIG or GTAW) of butt joint using finiteelement analysis is presented. The base metal is ST(304). The numerical modeldeveloped by include moving heat source, ...  Read More ...
Design and Simulation of A New Proposed Single-Slope Integrating Analog-to- Digital Converter System Based on Non-Linear Amplifiers
Design and Simulation of A New Proposed Single-Slope Integrating Analog-to- Digital Converter System Based on Non-Linear Amplifiers

Azzad B. Saeed

Volume 28, Issue 6 , March 2010, Page 1241-1252

https://doi.org/10.30684/etj.28.6.16

Abstract
  In this paper, a unipolar single-slope integrating analog-to-digitalconverter(ADC) is discussed, designed, and simulated, whereas, its conversiontime is less than that of the dual-slope ...  Read More ...
Shear Capacity of High-Strength Fiber Reinforced Concrete Beam-Column Joints
Shear Capacity of High-Strength Fiber Reinforced Concrete Beam-Column Joints

Kaiss Sarsam; Zaid Muhammad Kani Al-Azzawi

Volume 28, Issue 6 , March 2010, Page 1253-1266

https://doi.org/10.30684/etj.28.6.17

Abstract
  This work examines the work of 13 high-strength concrete (HSC) beamcolumnjoints (BCJ)-with and without steel fibers. Several shear design methods(with modification for fiber content, ...  Read More ...
Line Detection Using Radon Transform
Line Detection Using Radon Transform

H. H. Abbas; Hussein Ali Hussein

Volume 28, Issue 6 , March 2010, Page 1267-1280

https://doi.org/10.30684/etj.28.6.18

Abstract
  To extract features from digital images, it is useful to be able to find simpleshapes (straight lines, circles, ellipses, etc.).In order to achieve this goal, one can be able to detect ...  Read More ...