Some Factors Effecting on the Dielectric Strength for (PVC- Kaolin) Composites
Some Factors Effecting on the Dielectric Strength for (PVC- Kaolin) Composites
Volume 29, Issue 3 , February 2011, Page 103-116

https://doi.org/10.30684/etj.29.3.18

Abstract
  This research includes the effect of kaolin additions to the polymer matrix (PVC) and study some factors affecting to dielectric strength. The kaolin powder was added as percentage ...  Read More ...
Study of Spectroscopy and Thermodynamic Properties for Germanium Tetrafluoride GeF4 Molecular and Study of Potential Energy Curve for Bond (Ge-F)
Study of Spectroscopy and Thermodynamic Properties for Germanium Tetrafluoride GeF4 Molecular and Study of Potential Energy Curve for Bond (Ge-F)
Volume 29, Issue 3 , February 2011, Page 117-124

https://doi.org/10.30684/etj.29.3.19

Abstract
  In This research Complete study Spectroscopic and Thermodynamic properties for molecule GeF4 . This included calculation of potential energy curve . from this curve total energy of ...  Read More ...
Thinking Skills in Architectural Work A Study of Thinking Skill Levels at Student of Architecture
Thinking Skills in Architectural Work A Study of Thinking Skill Levels at Student of Architecture
Volume 29, Issue 3 , February 2011, Page 125-152

https://doi.org/10.30684/etj.29.3.20

Abstract
  A skill is the learned capacity to carry out pre-determined results often withthe minimum outlay of time, energy, or both . Skills can often be divided intodomain - general and domain ...  Read More ...
Transient Thermal Stress Prediction Due To Flow of Coolant Through Hot Pipe
Transient Thermal Stress Prediction Due To Flow of Coolant Through Hot Pipe

Anes F. Saad; Jalal M. Jalil

Volume 29, Issue 3 , February 2011, Page 423-433

https://doi.org/10.30684/etj.29.3.1

Abstract
  Transient thermal stresses in pipe wall due to coolant turbulent flow through pipe are investigated in this study with transient isothermal hot boundary in the external pipe radius. ...  Read More ...
Three-Dimensional Flow Model for The Downstream of Kuffa Barrage
Three-Dimensional Flow Model for The Downstream of Kuffa Barrage

Majid H. Hobi; Saleh I. Khassaf; Muhannad J. M. Al-Kizwini

Volume 29, Issue 3 , February 2011, Page 434-441

https://doi.org/10.30684/etj.29.3.2

Abstract
  The three-dimensional numerical computational fluid dynamics “CFD”computer program "SSIIM" was used to predict the flow field downstream theKuffa Barrage. It solved the ...  Read More ...
Applicable Studies of the Slow Electrons Motion in Air with Application in the Ionosphere
Applicable Studies of the Slow Electrons Motion in Air with Application in the Ionosphere

S. S. Dawood; F. G. Hamudy; M. I. Ismaeel; I. G. Faiadh

Volume 29, Issue 3 , February 2011, Page 442-461

https://doi.org/10.30684/etj.29.3.3

Abstract
  In this study, the motions of slow electrons in air and nitrogen with it's mixtures are studies by details. We solved numerically Boltzmann transport equation to calculate the parameters ...  Read More ...
Edge Detection Based on Standard Deviation Value and Back Propagation Algorithm of Artificial Neural Network
Edge Detection Based on Standard Deviation Value and Back Propagation Algorithm of Artificial Neural Network

Ammar Sabr Majed; Mohammed Hussien Miry; Ali Hussien Miry

Volume 29, Issue 3 , February 2011, Page 462-469

https://doi.org/10.30684/etj.29.3.4

Abstract
  This paper presents a proposed neural network based edge detection algorithm. we have used artificial neural network system to decide about whether each pixel is edge or not. First ...  Read More ...
A Study Of Some Hydrological Aspects For Spillway Design of A Small Dam In The North of Iraq
A Study Of Some Hydrological Aspects For Spillway Design of A Small Dam In The North of Iraq

Sahar A. Mohammad

Volume 29, Issue 3 , February 2011, Page 470-476

https://doi.org/10.30684/etj.29.3.5

Abstract
  This research is to evaluation and analyzing the main aspects of spillway design for Chaq-Chaq dam in north of Iraq in Suleimaniya governorate, with help of the hydraulic, hydrologic ...  Read More ...
Experimental Investigations Heat Transfer and Pressure Drop Characteristics of Flow Through Circular Tube Fitted With Drilled Cut-Conical Rings
Experimental Investigations Heat Transfer and Pressure Drop Characteristics of Flow Through Circular Tube Fitted With Drilled Cut-Conical Rings

Ameer A. Jadoaa

Volume 29, Issue 3 , February 2011, Page 477-487

https://doi.org/10.30684/etj.29.3.6

Abstract
  The heat transfer rate and pressure drop characteristics of turbulent flow of air through uniformly heated circular tube fitted with drilled cut conical rings with three space ratios ...  Read More ...
Poisson's Ratio as a Function of Time in Composite Material of Viscoelastic Behavior by Depending on Creep Test
Poisson's Ratio as a Function of Time in Composite Material of Viscoelastic Behavior by Depending on Creep Test

Azhar Sabah Ameed

Volume 29, Issue 3 , February 2011, Page 488-498

https://doi.org/10.30684/etj.29.3.7

Abstract
  In viscoelastic behavior of composite material, such as those made of thermo-set polyester and one layer random fiber glass, the Poisson’s ratio is described in new function of ...  Read More ...
Design and Implementation Web Site for UOT Using Mobile Devices
Design and Implementation Web Site for UOT Using Mobile Devices

Zahraa Abid AL-Huseen; Aimen Kazim; Mohammad Natiq; Alaa Kadhim

Volume 29, Issue 3 , February 2011, Page 499-512

https://doi.org/10.30684/etj.29.3.8

Abstract
  A mobile phone allows its user to make and receive telephone calls to and from the public telephone network which includes other mobiles and fixed-line phones across the world. In addition ...  Read More ...
Effective Web Page Crawler
Effective Web Page Crawler

Hilal Hadi Saleh; Israa Tahseen Ali

Volume 29, Issue 3 , February 2011, Page 513-530

https://doi.org/10.30684/etj.29.3.9

Abstract
  The World Wide Web (WWW) has grown from a few thousand pages in 1993 to more than eight billion pages at present. Due to this explosion in size, web search engines are becoming increasingly ...  Read More ...
Structural and Optical Properties of Lead Iodide Thin Films Prepared By Vacuum Evaporation Method
Structural and Optical Properties of Lead Iodide Thin Films Prepared By Vacuum Evaporation Method

Khalid M. Thajeel; Modaffer A.Mohammad; Ali M .Mousa; Shatha Sh. Jamil

Volume 29, Issue 3 , February 2011, Page 531-543

https://doi.org/10.30684/etj.29.3.10

Abstract
  Structural and optical properties were studied as a function of films thickness for thermally evaporation PbI2 films. X-ray diffraction analysis confirmed that PbI2 films are polycrystalline ...  Read More ...
On Left s -Centralizers Of Jordan Ideals And Generalized Jordan Left (s ,t ) -Derivations Of Prime Rings
On Left s -Centralizers Of Jordan Ideals And Generalized Jordan Left (s ,t ) -Derivations Of Prime Rings

Abdulrahman H. Majeed; Anwar Khaleel Faraj

Volume 29, Issue 3 , February 2011, Page 544-553

https://doi.org/10.30684/etj.29.3.11

Abstract
  In this paper we generalize the result of S. Ali and C. Heatinger on left s - centralizer of semiprime ring to Jordan ideal, we proved that if R is a 2-torsion free prime ring, U is ...  Read More ...
Detection of Water-Table by Using Ground Penetration Radar (GPR)
Detection of Water-Table by Using Ground Penetration Radar (GPR)

Ahmed Fouad Nashait; Mundher Ali Seger

Volume 29, Issue 3 , February 2011, Page 554-566

https://doi.org/10.30684/etj.29.3.12

Abstract
  Ground penetrating radar, GPR, is a high resolution geophysical method, which is based on the propagation of high frequency electromagnetic waves. The GPR method images structures in ...  Read More ...
Residual Stress effect on Fatigue Behavior of 2024- Aluminum alloy
Residual Stress effect on Fatigue Behavior of 2024- Aluminum alloy

Riyadh A. Al-Taie; Farag Mahel Mohammed; Ahmed N.Al-khazraji

Volume 29, Issue 3 , February 2011, Page 567-578

https://doi.org/10.30684/etj.29.3.13

Abstract
  In the present work the effect of residual stress on the fatigue behavior of 2024 Aluminum alloy was studied experimentally and numerically using finite element method with aid of ANSYS-11 ...  Read More ...
Smith Predictor with Simple Control Scheme for Higher Order Systems
Smith Predictor with Simple Control Scheme for Higher Order Systems

Qussay S.Tawfeeq; Nasir A. Al-awad; Ekhlas H. Karam

Volume 29, Issue 3 , February 2011, Page 579-594

https://doi.org/10.30684/etj.29.3.14

Abstract
  A simple control scheme with smith predictor connection is proposed in this paper for time delay higher order systems. The control scheme is simply integral (I) controller with Proportional ...  Read More ...
Removal of Heavy Metals Using Chemicals Precipitation
Removal of Heavy Metals Using Chemicals Precipitation

Balasim A. AbiD; Mahmood M. BrbootI; Najah M. Al-ShuwaikI

Volume 29, Issue 3 , February 2011, Page 595-612

https://doi.org/10.30684/etj.29.3.15

Abstract
  The single component and multi-component hydroxide precipitation and adsorption were studied for different heavy metals namely Iron (III), Chromium (III), Copper (II), Lead (II), Nickel ...  Read More ...
Solutions of Dynamic Fractional Order Differential Algebraic Equations System
Solutions of Dynamic Fractional Order Differential Algebraic Equations System

Alauldin Noori Ahmed

Volume 29, Issue 3 , February 2011, Page 613-624

https://doi.org/10.30684/etj.29.3.16

Abstract
  In this paper, we are presented the existence and uniqueness theorem, and two proposed methods, based on the theory of Gunwald-Letnikov fractional order derivative. In the first method, ...  Read More ...
Improving a Model for Speed / Density Relationship on Arterial Roads in Baghdad City
Improving a Model for Speed / Density Relationship on Arterial Roads in Baghdad City

Abeer Khudher Jameel

Volume 29, Issue 3 , February 2011, Page 625-638

https://doi.org/10.30684/etj.29.3.17

Abstract
  This paper was undertaken to investigate the relationships between speed and density on urban arterial roads of Baghdad City. This research work was based on the traffic survey data ...  Read More ...