Heat Transfer Enhancement in a Duct with Two Right Angled Bends
Heat Transfer Enhancement in a Duct with Two Right Angled Bends

Jalal M. Jalil; Talib K. Murtadha; Sanaa T. Mousa

Volume 28, Issue 15 , July 2010, Page 4889-4909

https://doi.org/10.30684/etj.28.15.1

Abstract
  A numerical study was carried out to predict the behavior of complex flow and forced convection heat transfer characteristics in a duct with two right. angled bends for both laminar ...  Read More ...
Using 3D Analysis of GIS and Remote Sensing for Modeling Erbil Water Flow and Sewerage Network
Using 3D Analysis of GIS and Remote Sensing for Modeling Erbil Water Flow and Sewerage Network

Amjed Naser Mohsin

Volume 28, Issue 15 , July 2010, Page 4910-4925

https://doi.org/10.30684/etj.28.15.2

Abstract
  Objective of this paper is to show the logical development of digitaltechnologies that explain and show the movement of water in two- andthree-dimensions (2D and 3D) as observed in ...  Read More ...
Determination of the Optical Constants of Thin-Film Coating Material Using Evolutionary Algorithm
Determination of the Optical Constants of Thin-Film Coating Material Using Evolutionary Algorithm

Muhammed Abdul-Redha Hussain

Volume 28, Issue 15 , July 2010, Page 4926-4938

https://doi.org/10.30684/etj.28.15.3

Abstract
  Anew mathematical procedure depends on the evolutionary algorithm has been proposed to estimate the optical constants (refractive index, extinction coefficient and thickness) of unknown ...  Read More ...
Numerical and Experimental Studies of Two-Phase Flow in Cooled / and Adiabatic Capillary Tubes
Numerical and Experimental Studies of Two-Phase Flow in Cooled / and Adiabatic Capillary Tubes

Wahid S. Mohammad; Nazar F. Antwan; Zainalabdeen Hussein Obeed

Volume 28, Issue 15 , July 2010, Page 4939-4958

https://doi.org/10.30684/etj.28.15.4

Abstract
  A numerical and experimental study was performed to predict the flow andthermal performance of a capillary tube that used in air conditioning andrefrigeration systems. In the numerical ...  Read More ...
New Short Term Planning and Scheduling Mathematical Model for Flexible Batch Manufacturing Systems
New Short Term Planning and Scheduling Mathematical Model for Flexible Batch Manufacturing Systems

Alla El-Din H. Kassam; Maha Naji Ali

Volume 28, Issue 15 , July 2010, Page 4959-4969

https://doi.org/10.30684/etj.28.15.5

Abstract
  In this paper a new approach is developed to tackle a real problem for short term production planning and scheduling work shop. A comprehensive binary mathematical model for a flexible ...  Read More ...
A Meromorphic Function and Its Derivative That Share One Value or Small Function
A Meromorphic Function and Its Derivative That Share One Value or Small Function

Amer H. H. Al-Khaladi

Volume 28, Issue 15 , July 2010, Page 4970-4979

https://doi.org/10.30684/etj.28.15.6

Abstract
  The aim of this work is to present two results of a uniqueness theorem ofmeromorphic functions. The first result is an improvement and a generalization of [1, Theorem1] and the second ...  Read More ...
Simulation Design of A General Purpose Microprocessor Based on FPGA
Simulation Design of A General Purpose Microprocessor Based on FPGA

Sabah Abdul-Hassan

Volume 28, Issue 15 , July 2010, Page 4980-4991

https://doi.org/10.30684/etj.28.15.7

Abstract
  A General purpose microprocessor is one having the capability to execute the usual set of instructions like arithmetic, logic, branching and other control instructions. It is consisting ...  Read More ...
A Proposed Genetic Algorithm for Multicast Routing
A Proposed Genetic Algorithm for Multicast Routing

Muna Mohammed Al-Nayar; Abdul Kareem Mahmod Shukri

Volume 28, Issue 15 , July 2010, Page 4992-4999

https://doi.org/10.30684/etj.28.15.8

Abstract
  Many Internet applications (such as video conferences) are one-to-manyor many-to-many, where one or multiple sources are sending to multiple receivers. These applications need certain ...  Read More ...
Influence of Cut Out Way on the Elastic-Plastic Behavior of AL-Cu Alloy
Influence of Cut Out Way on the Elastic-Plastic Behavior of AL-Cu Alloy

Farag M. Mohammed; Assifa M. Mohamad; Dunia H. Escander

Volume 28, Issue 15 , July 2010, Page 5000-5013

https://doi.org/10.30684/etj.28.15.9

Abstract
  The influence of cut out way on the elastic-plastic behavior of AL-Cu alloy was studied in the present work experimentally and numerically using finite element method with aid of ANSYS-11 ...  Read More ...
Field Oriented Control For Three Phase Induction Motor Based On Full Neural Estimator And Controller
Field Oriented Control For Three Phase Induction Motor Based On Full Neural Estimator And Controller

Fadhil A. Hassan

Volume 28, Issue 15 , July 2010, Page 5014-5027

https://doi.org/10.30684/etj.28.15.10

Abstract
  Closed loop speed control for an I.M is somewhat complex strategy, thecomplexity is gradually increases according to the demand performance degree. There are many types of control strategies: ...  Read More ...
Quantitative Determination of Paracetamol in Pharmaceutical Formulations by FTIR Spectroscopy
Quantitative Determination of Paracetamol in Pharmaceutical Formulations by FTIR Spectroscopy

Bashar Hussein Qasim

Volume 28, Issue 15 , July 2010, Page 5028-5035

https://doi.org/10.30684/etj.28.15.11

Abstract
  The aim of this work was to use a spectrophotometric method for thedetermination of paracetamol in pharmaceutical formulations.The quantification of paracetamol through infrared spectroscopy ...  Read More ...
Influence of Butt Welding Shapes Design on the Microstructure and Stresses of Low Carbon Steel
Influence of Butt Welding Shapes Design on the Microstructure and Stresses of Low Carbon Steel

Hani Aziz Ameen; Khairia Salman Hassan

Volume 28, Issue 15 , July 2010, Page 5036-5047

https://doi.org/10.30684/etj.28.15.12

Abstract
  The aim of this paper is to demonstrate the influence of butt welding shapes on the microstructure, temperature and equivalent stresses of carbon steel type St- 37.The single butt welding ...  Read More ...
Charpy Impact Value of Friction Stir Welded 7020 and 7075 Aluminium Alloys at Different Tool Rotation and Transverse Speed
Charpy Impact Value of Friction Stir Welded 7020 and 7075 Aluminium Alloys at Different Tool Rotation and Transverse Speed

Shawnim R. jalal

Volume 28, Issue 15 , July 2010, Page 5048-5054

https://doi.org/10.30684/etj.28.15.13

Abstract
  In this work, the effect of friction stir welding parameters such as tool rotation and tool transverse speed on the impact value of 7mm thick weldments of aluminum alloys 7020 and 7075 ...  Read More ...
The Effect of Shot Peening and Residual Stresses on Cumulative Fatigue Damage
The Effect of Shot Peening and Residual Stresses on Cumulative Fatigue Damage

Hussain J. M. Alalkawi; Qusay Khalid Mohammed; Waleed Sadun Al-Nuami

Volume 28, Issue 15 , July 2010, Page 5055-5070

https://doi.org/10.30684/etj.28.15.14

Abstract
  A series of constant and cumulative fatigue tests under the effect of shot peening were conducted for two aluminum alloys 2024 and 5052. Three unpeed specimens were tested for each ...  Read More ...
Unscented Kalman Estimator for Estimating the State of Two-phase Permanent Magnet Synchronous Motor
Unscented Kalman Estimator for Estimating the State of Two-phase Permanent Magnet Synchronous Motor

Ayad Qasim Hussein

Volume 28, Issue 15 , July 2010, Page 5071-5078

https://doi.org/10.30684/etj.28.15.15

Abstract
  This paper presents the unscented Kalman filters (UKF) for estimating the states (winding currents, rotor speed and rotor angular position) of two-phase Permanent Magnet Synchronous ...  Read More ...
Design and Implementation of An Intelligent Traffic Light System
Design and Implementation of An Intelligent Traffic Light System

Hadeel N. Abdullah; Ivan A. Hashim; Bassam H. Abd

Volume 28, Issue 15 , July 2010, Page 5079-5087

https://doi.org/10.30684/etj.28.15.16

Abstract
  The main object of this paper is to design and implement an intelligenttraffic light system. The system is able to sense the presence or absence of vehicles within certain range, by ...  Read More ...
Evaluation The Performance of Al-Thawra At-Grade Intersection Using The HCS2000 Computer Package
Evaluation The Performance of Al-Thawra At-Grade Intersection Using The HCS2000 Computer Package

Ali Majeed K.Al-Ubadiy; Zeena Tariq Al-Azzawi; Nawal Dawood S

Volume 28, Issue 15 , July 2010, Page 5088-5101

https://doi.org/10.30684/etj.28.15.17

Abstract
  Al-Thawra signalized intersection is one of the most important intersections in AL-Hilla city because it relates the Governorates: Baghdad, Najaf, Kerbala and Babel, and serves of about ...  Read More ...
Using B+ Tree To Represent Secret Messages For Steganography Purpose
Using B+ Tree To Represent Secret Messages For Steganography Purpose

Suhad M. Kadhem

Volume 28, Issue 15 , July 2010, Page 5102-5112

https://doi.org/10.30684/etj.28.15.18

Abstract
  In this research we suggest a new approach by using B+ tree for storing the secret massages (that want to be sent) in a manner that prevent redundancy of these massages or even sub ...  Read More ...
Finite Element Analysis of Single Sided Linear Induction Motor
Finite Element Analysis of Single Sided Linear Induction Motor

Adil H. Ahmad; Mehdi F. Bonneya

Volume 28, Issue 15 , July 2010, Page 5113-5123

https://doi.org/10.30684/etj.28.15.19

Abstract
  This paper presents analysis and operation of linear induction motor (LIM) using finite element method (FEM). The solution of magnetic field problem is performed for both two and three ...  Read More ...
Experimental Study of The Effect of Addition of Calming Section on The Heat Transfer Process In A Uniformly Heated Inclined Tube
Experimental Study of The Effect of Addition of Calming Section on The Heat Transfer Process In A Uniformly Heated Inclined Tube

Nasser F. Hussain; Abdulhassan A. Karamallah; Akeel A. Mohammed

Volume 28, Issue 15 , July 2010, Page 5123-5137

https://doi.org/10.30684/etj.28.15.20

Abstract
  Experimental research has been conducted for combined convection to study the local and average heat transfer for hydrodynamically fully developed (the value of L/D of calming section ...  Read More ...