Effect of Laser Surface Treatment on the Properties of Composite Material Produced by Powder Technology
Effect of Laser Surface Treatment on the Properties of Composite Material Produced by Powder Technology

Ameer Saadi Shajar; Dunia Hermez Esckndar; Enaam Obeid Hassoun; Khansaa Dawood Selman

Volume 31, Issue 10 , July 2013, Page 136-148

https://doi.org/10.30684/etj.31.10A15

Abstract
  In this investigation we obtained composite material by the powder technology process of metallic matrix which posses particle size ( 20µm ) with changing the percentage of additive ...  Read More ...
Comparison Between Conventional Arrays in 2D Electrical Resistivity Imaging Technique for Shallow Subsurface Structure Detection of the University of Technology
Comparison Between Conventional Arrays in 2D Electrical Resistivity Imaging Technique for Shallow Subsurface Structure Detection of the University of Technology

Imzahim Abdul Kareem Alwan

Volume 31, Issue 10 , July 2013, Page 1817-1824

https://doi.org/10.30684/etj.31.10A1

Abstract
  The most common conventional arrays which are used in 2D electrical resistivity imaging techniques are Wenner array, dipole-dipole array and Wenner-Schlumberger array. These arrays ...  Read More ...
The Influence of Microstructure on the Corrosion Rate of Carbon Steels
The Influence of Microstructure on the Corrosion Rate of Carbon Steels

Sami I. Al-rubaiey; Eman A. Anoon; Mahdi M. Hanoon

Volume 31, Issue 10 , July 2013, Page 1825-1836

https://doi.org/10.30684/etj.31.10A2

Abstract
  This paper presents the influence of carbon steel microstructure on the corrosion rates. Four types of microstructures have obtained by quenching and tempering and iso-thermal annealing. ...  Read More ...
Enhancing the Stability Performance of Iraqi National Super Grid System by Using UPFC Devices Based on Genetic Algorithm
Enhancing the Stability Performance of Iraqi National Super Grid System by Using UPFC Devices Based on Genetic Algorithm

Rashid H. Al-Rubayi; Abdulrazzaq F. Noori

Volume 31, Issue 10 , July 2013, Page 1837-1853

https://doi.org/10.30684/etj.31.10A3

Abstract
  The object of this work is to improve the stability of the Iraqi National Super Grid System (INSGS) by installing Unified Power Flow Controller (UPFC) devices in different optimal locations ...  Read More ...
The Effects of Vehicle Speed and Type of Road Surface on the Longitudinal Slip of Tires and the Brake Stopping Distance
The Effects of Vehicle Speed and Type of Road Surface on the Longitudinal Slip of Tires and the Brake Stopping Distance

Ahmed Aladdin Ibrahim; Muthana Lateef Abdullah

Volume 31, Issue 10 , July 2013, Page 1854-1869

https://doi.org/10.30684/etj.31.10A4

Abstract
  The effects of vehicle speed and type of road surface on tire longitudinal slip and on brake stopping distanceare investigated.The experimental work for measuring the tire longitudinal ...  Read More ...
An Experimental Investigation into theMechanical Properties of New Natural Fiber Reinforced Mortar
An Experimental Investigation into theMechanical Properties of New Natural Fiber Reinforced Mortar

Sinan Abdulkhaleq Yaseen

Volume 31, Issue 10 , July 2013, Page 1870-1881

https://doi.org/10.30684/etj.31.10A5

Abstract
  Since the starting the 21st century, there is an increased awareness that non-renewable resources are becoming scarce, and dependence on renewable resources is growing. The 21st century ...  Read More ...
Pulse Width Modulation for DC Motor Control Based on LM324
Pulse Width Modulation for DC Motor Control Based on LM324

Jamal A. Mohammed

Volume 31, Issue 10 , July 2013, Page 1882-1896

https://doi.org/10.30684/etj.31.10A6

Abstract
  The DC motor is an important part of an equipment in many industrial applications requiring variable speed and load characteristics due to its ease of controllability.Nowadays, there ...  Read More ...
Compressive Strength of Lightweight Porcelanite Aggregate Concrete -New Formulas
Compressive Strength of Lightweight Porcelanite Aggregate Concrete -New Formulas

Nabeel A-M. Al-Bayati; Kaiss F. Sarsam; Ihsan A. S. Al-Shaarbaf

Volume 31, Issue 10 , July 2013, Page 1897-1913

https://doi.org/10.30684/etj.31.10A7

Abstract
  From the various kinds of concrete, lightweight concrete (LWC) is one of the most interesting subjects for researchers because of its advantages such as the savings in concrete member ...  Read More ...
Analyses of Space Vector PWM Inverter Under Fault Conditions
Analyses of Space Vector PWM Inverter Under Fault Conditions

Ammar Sami Mohammed; Majid K. Al-Khatat

Volume 31, Issue 10 , July 2013, Page 1914-1928

https://doi.org/10.30684/etj.31.10A8

Abstract
  The Space-Vector Pulse Width Modulation (SVPWM) technique has become a popular pulse width modulation technique. In this paper, performance investigation of space vector PWM inverter ...  Read More ...
STEP- Based Assembly Feature Recognition Using Attribute Adjacency Graph for Prismatic Parts
STEP- Based Assembly Feature Recognition Using Attribute Adjacency Graph for Prismatic Parts

Hussein Salem Ketan; Aseel Jameel Haleel

Volume 31, Issue 10 , July 2013, Page 1929-1948

https://doi.org/10.30684/etj.31.10A9

Abstract
  This paper introduces the concept of STEP AP203(STandard for Exchange of Product model data) an ISO standard as a neutral format for exchange of CAD model data between different CAD/CAM ...  Read More ...
Shear Wall Analysis using Framework Method: Comparison with Shell Element Method and Column Analogy
Shear Wall Analysis using Framework Method: Comparison with Shell Element Method and Column Analogy

Ammar A. Ali; Hassan H. Jony

Volume 31, Issue 10 , July 2013, Page 1949-1961

https://doi.org/10.30684/etj.31.10A10

Abstract
  Different techniques are utilized to analyze shear walls like shell elements model or column analogy. Framework method (FWM) is used to substitute the shell elements. A rectangular ...  Read More ...
Performance of Alternative Refrigerant R431A on Air- Conditioning System under Real Transient Conditions
Performance of Alternative Refrigerant R431A on Air- Conditioning System under Real Transient Conditions

Haider ali hussen

Volume 31, Issue 10 , July 2013, Page 1962-1971

https://doi.org/10.30684/etj.31.10A11

Abstract
  This paper presents the performances of new ozone-friendly refrigerant (R431a) in air-conditioning system were investigated experimentally and compared with R22 under transient conditions.R431a ...  Read More ...
Electronically Tunable Single-Input Multi-Output Current- Mode Biquad Filter Suitable for Easy Cascading
Electronically Tunable Single-Input Multi-Output Current- Mode Biquad Filter Suitable for Easy Cascading

Muhammed Abdulbaki Ibrahim

Volume 31, Issue 10 , July 2013, Page 1972-1981

https://doi.org/10.30684/etj.31.10A12

Abstract
  This paper presents a new current-mode (CM) multi-function filter with one input and three outputs. The filter uses only three multi-output inverting second generation current conveyors ...  Read More ...
The Development of Embedded GPS-GSM Based Real Time Vehicle Tracking System
The Development of Embedded GPS-GSM Based Real Time Vehicle Tracking System

Ali Subhi Hiyawi Alsadi

Volume 31, Issue 10 , July 2013, Page 1982-1999

https://doi.org/10.30684/etj.31.10A13

Abstract
  The project is an integrated system which is placed inside a vehicle for the purpose of tracking it to determine its current GPS location in the real time, the system use Global System ...  Read More ...
Ear Recognition by Using Self Organizing Feature Map
Ear Recognition by Using Self Organizing Feature Map

Suad K. Mohammad

Volume 31, Issue 10 , July 2013, Page 2000-2013

https://doi.org/10.30684/etj.31.10A14

Abstract
  A wide variety of systems requires reliable personal recognition schemes to either confirm or determine the identity of an individual requesting their services. The purpose of such ...  Read More ...