Effect of Zinc Addition on the Density and Wear Rate of Al-12Si Compacts
Effect of Zinc Addition on the Density and Wear Rate of Al-12Si Compacts

Mahde Mter Hanoon

Volume 30, Issue 18 , October 2012, Page 382-391

https://doi.org/10.30684/etj.30.18.14

Abstract
  This research aimed to prepareAl-12Si alloys by powder metallurgy method because of its commercial and technological importance. Aluminum and Silicon powders were used, then mixed and ...  Read More ...
Use of Randomized Complete Block Design to Demonstrate the Impact of Types of Fertilizer on the amount of Rice Production
Use of Randomized Complete Block Design to Demonstrate the Impact of Types of Fertilizer on the amount of Rice Production

Asmaa Nuaman Abd Al jabbar

Volume 30, Issue 18 , October 2012, Page 392-404

https://doi.org/10.30684/etj.30.18.15

Abstract
  The interest in agriculture since ancient time is one of the priorities of human being because of their relationship and direct contact in his life in terms of providing food for himself ...  Read More ...
Experimental Study on Enhancement of Single-Basin Solar Still Using Dye Solutions
Experimental Study on Enhancement of Single-Basin Solar Still Using Dye Solutions

Kadhim H. S. AL-Zaedy

Volume 30, Issue 18 , October 2012, Page 3112-3125

https://doi.org/10.30684/etj.30.18.1

Abstract
  An enhancement of single slope solar still using different dye solutions was studied experimentally. Single-basin solar still can be used for water desalination. Probably, they are ...  Read More ...
SWOT Analysis for Current Situation in Najaf Center
SWOT Analysis for Current Situation in Najaf Center

Abdul Razzak Ziboon; Imzahim Abdul Kareem Alwan; Hadeel J. Ali

Volume 30, Issue 18 , October 2012, Page 3126-3140

https://doi.org/10.30684/etj.30.18.2

Abstract
  This paper presents an analysis situation of Najaf Center. It uses to determine all internal resources, capabilities and obstacles (strengths and weakness), and external factors (opportunities ...  Read More ...
Improving Collapsibility and Compressibility of Gypseous Sandy Soil Using Bentonite and Kaolinite
Improving Collapsibility and Compressibility of Gypseous Sandy Soil Using Bentonite and Kaolinite

Hussein H. Karim; T. Schanz; Maha H. Nasif

Volume 30, Issue 18 , October 2012, Page 3141-3153

https://doi.org/10.30684/etj.30.18.3

Abstract
  The sandy soil which covers the surface layer for the investigated area consists of high gypsum content (50%). The soil was found to be a “collapsible” soil. Thus bentonite ...  Read More ...
Optimum Effect of Factors Influencing on Sacrificial Cathodic Protection for Steel Wall
Optimum Effect of Factors Influencing on Sacrificial Cathodic Protection for Steel Wall

Mohammad H. Hafiz; Wissam K. Hamdan; Saad E. Kaskah

Volume 30, Issue 18 , October 2012, Page 3154-3163

https://doi.org/10.30684/etj.30.18.4

Abstract
  The Box-Behnken Design (BBD) is used to model the sacrificial Cathodic Protection System (SCPS) to find the factors effectiveness behaviour. For protection potential assessment the ...  Read More ...
Numerical and Experimental Study of Isotherm Field Inside a Desktop P.C.
Numerical and Experimental Study of Isotherm Field Inside a Desktop P.C.

Adel Hannon Ayaal

Volume 30, Issue 18 , October 2012, Page 3164-3174

https://doi.org/10.30684/etj.30.18.5

Abstract
  In this paper the heat transfer analysis from a heat generation components (central processing unit CPU and power supply) in a P.C. desktop was studied. Experimental and three – ...  Read More ...
Design and Simulation of a Second-Order Universal Switched- Capacitor Filter as a 10-Pin Dual-In-Line Package Integrated Circuit
Design and Simulation of a Second-Order Universal Switched- Capacitor Filter as a 10-Pin Dual-In-Line Package Integrated Circuit

Abdul Kareem K. A. Raheem; Salam Waley Shneen; Manal Hadi Jaber; Ahmed H. Reja

Volume 30, Issue 18 , October 2012, Page 3175-3191

https://doi.org/10.30684/etj.30.18.6

Abstract
  This paper explains the design of a Universal (Low, High, Band and Notch) Second-Order Filter using switched capacitor (SC) technique. The design depends on the crystal oscillator circuit ...  Read More ...
Vibration Analysis of Laminated Composites Using Experimental and Genetic Algorithms Optimization Technique
Vibration Analysis of Laminated Composites Using Experimental and Genetic Algorithms Optimization Technique

Nabil Hassan Hadi; Kayser Aziz Ameen

Volume 30, Issue 18 , October 2012, Page 3192-3218

https://doi.org/10.30684/etj.30.18.7

Abstract
  In this paper, damage detection for different types of defects (delamination, crackand hole) in the composite laminate plate and cylindrical shell be used to characterizethe vibration ...  Read More ...
Numerical Solution of Calculus of Variations by using the Second Chebyshev Wavelets
Numerical Solution of Calculus of Variations by using the Second Chebyshev Wavelets

Suha Najeeb Shihab; Asmaa Abdalelah Abdalrehman

Volume 30, Issue 18 , October 2012, Page 3219-3229

https://doi.org/10.30684/etj.30.18.8

Abstract
  In this paper the second Chebyshev wavelets expansions with the operational matrix is applied for solving calculus of variational problems , with the aid of spectral method to reduce ...  Read More ...
Accuracy Assessment of LIDAR Data Using Longitudinal Profile of a Road
Accuracy Assessment of LIDAR Data Using Longitudinal Profile of a Road

Abbas Z. Khalfa; Imzahim Abdul Kareem Alwan; Adnan R. Mechman

Volume 30, Issue 18 , October 2012, Page 3230-3240

https://doi.org/10.30684/etj.30.18.9

Abstract
  LiDAR data gives accurate elevation therefore; we can obtain 3D modelling from LiDAR data which can be used for many applications such as civil engineering and surveying engineering, ...  Read More ...
New Moodle Module for Charging Course Materials Download Process Using Prepaid Card Technique
New Moodle Module for Charging Course Materials Download Process Using Prepaid Card Technique

Jalal B. Raouf

Volume 30, Issue 18 , October 2012, Page 3241-3252

https://doi.org/10.30684/etj.30.18.10

Abstract
  This work describes a new Moodle module, CFdownload, developed to set up e-commerce system which allows charging the process of downloading files using Prepaid Card Technique. This ...  Read More ...
Aerodynamic Characteristics Improving of S809 Airfoil in Wind Turbine with Microtab
Aerodynamic Characteristics Improving of S809 Airfoil in Wind Turbine with Microtab

Ressan Faris Al-Maliky

Volume 30, Issue 18 , October 2012, Page 3253-3267

https://doi.org/10.30684/etj.30.18.11

Abstract
  In present work numerical two dimensions, steady, incompressible, turbulent flow past S809 wind turbine airfoil with microtab at 95% of chord length of leading edge in lower surface ...  Read More ...
Performance Evaluation of Electrocoagulation Technique for Removing Groundwater Hardness of Tikrit University
Performance Evaluation of Electrocoagulation Technique for Removing Groundwater Hardness of Tikrit University

Maha I Alali

Volume 30, Issue 18 , October 2012, Page 3268-3279

https://doi.org/10.30684/etj.30.18.12

Abstract
  The performance of Electrocoagulation (EC) process for removal of hardness in groundwater(GW) of Tikrit University in Salahaddin province, north of Baghdad in Iraq has been studied ...  Read More ...
Study on Wind Loads Coefficients and Flow Field Characteristics Around the Parabolic Trough With Stiffeners
Study on Wind Loads Coefficients and Flow Field Characteristics Around the Parabolic Trough With Stiffeners

Mauwafak Ali Tawfik; Bahaa Ibrahim Kazem; Haider Hussein Hamad

Volume 30, Issue 18 , October 2012, Page 3280-3296

https://doi.org/10.30684/etj.30.18.13

Abstract
  In the current study, the numerical analysis of the flow field characteristics around the parabolic trough with stiffener of solar polar concentrating power system is performed. The ...  Read More ...