Study of Some Optical, Electrical Properties of ZnO Thin Films Deposited by Chemical Spray Pyrolysis Method
Study of Some Optical, Electrical Properties of ZnO Thin Films Deposited by Chemical Spray Pyrolysis Method

Ban Kalid Mohumed

Volume 30, Issue 10 , June 2012, Page 228-238

https://doi.org/10.30684/etj.30.10.13

Abstract
  In this research we prepared ZnO thin films by Spray pyrolysis method with thickness (300nm) on a glass substrates and study its optical and electric properties. The results of (X-Ray ...  Read More ...
Influence of Microstructure on Abrasive Wear Resistance of Al-12 wt% Si Alloy
Influence of Microstructure on Abrasive Wear Resistance of Al-12 wt% Si Alloy

Eman Adnan Anon

Volume 30, Issue 10 , June 2012, Page 239-247

https://doi.org/10.30684/etj.30.10.14

Abstract
  Abrasive wear of as-cast Al-12 wt% Si alloy has been slid against SiC emery papers (grits 120 and 220). The wear rate and wear mechanism as a function of bearing pressure have been ...  Read More ...
Residual Stresses Sreated by Heat Treatment for Carbon Steel and their Effect on Mechanical Properties
Residual Stresses Sreated by Heat Treatment for Carbon Steel and their Effect on Mechanical Properties

Khamaal Muhssan; Mohamad Seed Wheed

Volume 30, Issue 10 , June 2012, Page 248-259

https://doi.org/10.30684/etj.30.10.15

Abstract
  This work aims to study the effect of residual stresses created by quenching processes on the fatigue behavior of low carbon steel .The quenching was achieved from a temperature of ...  Read More ...
An Experimental Study for the Effect of Vertical Forced Vibration on Pool Boiling Heat Transfer Coefficient
An Experimental Study for the Effect of Vertical Forced Vibration on Pool Boiling Heat Transfer Coefficient

Zena K. Kadhim; Ahmed A. Mohamed; Sarah Ali Abed

Volume 30, Issue 10 , June 2012, Page 1662-1676

https://doi.org/10.30684/etj.30.10.1

Abstract
  In this research, an experimental study for the effect of forced vibrations on pool boiling heat transfer coefficient has been made in a glass of chamber cylindrical shape (75 mm bore ...  Read More ...
Assessing New Product Sustainability Index (NPSI) by Integrating Sustainability Aspects into the Early New Product Design Stages
Assessing New Product Sustainability Index (NPSI) by Integrating Sustainability Aspects into the Early New Product Design Stages

Abdulamir Bektas Wali; Mahmoud Abbas Mahmoud; Jamal Nasir H. Al Khatib

Volume 30, Issue 10 , June 2012, Page 1677-1695

https://doi.org/10.30684/etj.30.10.2

Abstract
  Product design is one of the most important stages in the new product development process influencing global sustainability. However, the early design strategy offers the highest impact ...  Read More ...
Study On the Flexural and Impact Properties of Short Okra Natural Fiber Reinforced Epoxy Matrix Composites
Study On the Flexural and Impact Properties of Short Okra Natural Fiber Reinforced Epoxy Matrix Composites

Aseel Mahmood Abdullah; Ahmed Mudhafar Hashim

Volume 30, Issue 10 , June 2012, Page 1696-1706

https://doi.org/10.30684/etj.30.10.3

Abstract
  The okra natural fiber reinforced epoxy matrix composites were prepared by hand-lay-up. The weight fractions of okra fiber are (1, 3, 6, 9, and 12% by weight wt). The flexural properties ...  Read More ...
Comparative Study of Temperature Control in a Heat Exchanger Process
Comparative Study of Temperature Control in a Heat Exchanger Process

Afraa H. Al-Tae; Safa A. Al-Naimi

Volume 30, Issue 10 , June 2012, Page 1707-1731

https://doi.org/10.30684/etj.30.10.4

Abstract
  In the present work the dynamic behavior of a plate heat exchanger (PHE) (single pass counter current consists of 24 plates) studied experimentally and theoretically to control the ...  Read More ...
Mining Tutors’ Interesting Areas to Develop Researched Papers Using A Proposed Educational Data Mining System
Mining Tutors’ Interesting Areas to Develop Researched Papers Using A Proposed Educational Data Mining System

Reem Jafar Ismail

Volume 30, Issue 10 , June 2012, Page 1732-1748

https://doi.org/10.30684/etj.30.10.5

Abstract
  Educational Data Mining (EDM) is the process of converting raw data from educational systems to useful information that can be used by educational software developers, students, teachers, ...  Read More ...
Diffusion of Salt Water and Alkaline Solutions in Polyester Reinforced by Glass Fibers
Diffusion of Salt Water and Alkaline Solutions in Polyester Reinforced by Glass Fibers

Wafaa Mahdi Salih; Rand Mohamad Ali

Volume 30, Issue 10 , June 2012, Page 1749-1756

https://doi.org/10.30684/etj.30.10.6

Abstract
  The solubility and kinetics of moisture transport mechanisms in type of resin and fibers have been investigated the physical tests group comprised the determination of diffusion coefficient ...  Read More ...
Finding the Optimal Solution of Fuzzy Transportation Problems
Finding the Optimal Solution of Fuzzy Transportation Problems

Aseel Hammed Abed Sadda

Volume 30, Issue 10 , June 2012, Page 1757-1765

https://doi.org/10.30684/etj.30.10.7

Abstract
  The paper investigates fuzzy transportations problem with the aid of trapezoidal fuzzy numbers. For finding the initial solution of this problem we have preferred the fuzzy least costs ...  Read More ...
Potentiality of Waste Water Reuse in Iraq
Potentiality of Waste Water Reuse in Iraq

Karim Khalaf. EL- Jumaily; Mustafa Wajdi Jalal

Volume 30, Issue 10 , June 2012, Page 1766-1782

https://doi.org/10.30684/etj.30.10.8

Abstract
  Reusing of treated wastewater effluent, which is normally discharged to the environment from municipal waste water treatment plants, is receiving an increasing attention as a reliable ...  Read More ...
Influence of Currents Density and Gap Size on Metal Removal Rate and Surface Roughness in Electrochemical Machining (ECM)
Influence of Currents Density and Gap Size on Metal Removal Rate and Surface Roughness in Electrochemical Machining (ECM)

Hiba Husien Alwan; Saad kariem Shather

Volume 30, Issue 10 , June 2012, Page 1783-1796

https://doi.org/10.30684/etj.30.10.9

Abstract
  Electrochemical machining one of non traditional method which is used to machine a complex shape such as that uses the chemical reaction associated with electric current to remove metals. ...  Read More ...
Optimization of liquid-liquid Extraction Column Using Genetic Algorithms
Optimization of liquid-liquid Extraction Column Using Genetic Algorithms

Ali D. Ali

Volume 30, Issue 10 , June 2012, Page 1797-1810

https://doi.org/10.30684/etj.30.10.10

Abstract
  In the present study, liquid-liquid extraction column was optimized using Genetic Algorithms as a non-conventional optimization technique, which scores over conventional techniques. ...  Read More ...
Imaging with Hexagonal Segmented Mirror
Imaging with Hexagonal Segmented Mirror

Fouad N. Hassan; A.T. Mohammed; A. J. Tawfiq

Volume 30, Issue 10 , June 2012, Page 1811-1815

https://doi.org/10.30684/etj.30.10.11

Abstract
  Different hexagons configuration aperture models of the optical telescope mirror is carefully considered in this study. The point spread function and the modulation transfer function ...  Read More ...
STATCOM Application on the Iraqi (400kv) Super Grid Network with Power Oscillation Damping(POD) & Proportional Integral (PI) Controller
STATCOM Application on the Iraqi (400kv) Super Grid Network with Power Oscillation Damping(POD) & Proportional Integral (PI) Controller

Raaed Faleh Hassan; Ahmed Wahab Abdul Razzaq

Volume 30, Issue 10 , June 2012, Page 1816-1842

https://doi.org/10.30684/etj.30.10.12

Abstract
  Flexible ac transmission system (FACTS) can provide control more than conventional control and achieve fast control response time, STATCOM is a shunt FACTS device it is used to voltage ...  Read More ...