Effect of Dual Reinforcement on Wear Resistance by Aluminum Compacts Reinforce by SiC, Al2O3
Effect of Dual Reinforcement on Wear Resistance by Aluminum Compacts Reinforce by SiC, Al2O3

Mohammed Saeed. Waheed; Hassan Hamed. Abed

Volume 27, Issue 13 , September 2009, Page 423-429

https://doi.org/10.30684/etj.27.13.19

Abstract
  The producing composite materials of dual reinforcement in which the matrix material is aluminum reinforced with two types of ceramic particles : which are Alumina (50μmKeywordscomposite ...  Read More ...
Effect of Non-Symmetric Die on Extrusion Process And Product Bending
Effect of Non-Symmetric Die on Extrusion Process And Product Bending

Talal Abdul-Jabbar Abdul-wahhab; Asifah Mahdi. Mohammed; Donia Homes. Alexander

Volume 27, Issue 13 , September 2009, Page 430-450

https://doi.org/10.30684/etj.27.13.20

Abstract
  The development in production of curved sections in one forming processusing direct extrusion process is going to increase annually because of increasing demands on such sections that ...  Read More ...
FEM-Simulation of Single and Multi Layered Induction Heating Systems
FEM-Simulation of Single and Multi Layered Induction Heating Systems

A. K. M. AL-Shaikhli; Hanan A. R. Akkar; Mohammed Moanes Ezzaldean Ali

Volume 27, Issue 13 , September 2009, Page 2245-2262

https://doi.org/10.30684/etj.27.13.1

Abstract
  Induction heating system has a number of inherent benefits compared totraditional heating systems. Many analytical and numerical approaches have been applied to solve the problem of ...  Read More ...
Predictive Modeling of Hawiza Marsh Eutrophication
Predictive Modeling of Hawiza Marsh Eutrophication

Ali K. Shayyish

Volume 27, Issue 13 , September 2009, Page 2263-2273

https://doi.org/10.30684/etj.27.13.2

Abstract
  The term "eutrophic" refers to system rich in nutrients, and hence Eutrophicationmeans nutrient enrichment, particularly by increasing levels of nitrogen andphosphorus [1]. In lakes, ...  Read More ...
Contact Stresses for Different Gear Design Parameter
Contact Stresses for Different Gear Design Parameter

Muhsin J. Jweeg; Wisam Auday Hussain

Volume 27, Issue 13 , September 2009, Page 2274-2300

https://doi.org/10.30684/etj.27.13.3

Abstract
  Gearing is one of the most critical components in mechanical power transmissionsystems. This work investigates the characteristics of an Involute gear systemincluding contact stresses. ...  Read More ...
Detection of Rubidium (Rb85 & Rb87) ionized by Ultra-Violet light
Detection of Rubidium (Rb85 & Rb87) ionized by Ultra-Violet light

Mohammed T. Hussein

Volume 27, Issue 13 , September 2009, Page 2301-2306

https://doi.org/10.30684/etj.27.13.4

Abstract
  Photo-ions of rubidium were generated due to the interaction of effusive Rbatomic beam with the C.W. UV lamp of 2.5 KW power. The photo-ions isotopicof (Rb85 & Rb87 ) were extracted ...  Read More ...
Wedge Foundation in Expansive Soils
Wedge Foundation in Expansive Soils

Mohammad A. Al-Neami; Farah S. Al-Jabary

Volume 27, Issue 13 , September 2009, Page 2307-2318

https://doi.org/10.30684/etj.27.13.5

Abstract
  The object of this study is to find a construction solution to the problem of expansive soils by suggesting of a new shape of the conventional footing which has a sharp edge, this footing ...  Read More ...
A Dynamic Modeling Capability for Subcritical Vapor Compression Refrigeration System
A Dynamic Modeling Capability for Subcritical Vapor Compression Refrigeration System

Jafar M. Hassan; Ali H. Tarrad; Mohammed N. Abdullah

Volume 27, Issue 13 , September 2009, Page 2319-2338

https://doi.org/10.30684/etj.27.13.6

Abstract
  In this investigation the individual component models for a typical subcritical cycle are developed based on the best published theoretical and empirical literature. The developed approach, ...  Read More ...
Finite Element Analysis Up To Failure Of Composite Concrete – Corrugated Steel Cylindrical Shells
Finite Element Analysis Up To Failure Of Composite Concrete – Corrugated Steel Cylindrical Shells

Husain M. Husain; Eyad K. Sayhood; Ahmed T. Mahdi

Volume 27, Issue 13 , September 2009, Page 2339-2351

https://doi.org/10.30684/etj.27.13.7

Abstract
  This study presents three-dimensional finite element analysis to the behavior of composite concrete-corrugated steel cylindrical shell. This type of construction utilizes the advantages ...  Read More ...
Encrypting Audio Data Hiding by Visual Secret Sharing
Encrypting Audio Data Hiding by Visual Secret Sharing

Nidaa F. Hassan; Rehab F. Hassan; Akbas E. Ali

Volume 27, Issue 13 , September 2009, Page 2352-2364

https://doi.org/10.30684/etj.27.13.8

Abstract
  Steganography and cryptography are usually used to ensure informationsafety in today’s data communication. This paper makes use of audiosteganography technique and encrypted secret ...  Read More ...
Simulation of Spontaneous Condensation of Viscous SteamFlow in Low-Pressure Convergent-Divergent Nozzles
Simulation of Spontaneous Condensation of Viscous SteamFlow in Low-Pressure Convergent-Divergent Nozzles

Assim H Yousif; Kassim K Abbas; Aqeel M Jary

Volume 27, Issue 13 , September 2009, Page 2365-2392

https://doi.org/10.30684/etj.27.13.9

Abstract
  The present study describes the results of experimental and numerical investigation of wet steam flow in low-pressure convergent-divergent nozzles and deals with the effects of turbulence ...  Read More ...
Performance of Fiber Light-Weight Aggregate Concrete Exposed to Elevated Temperatures
Performance of Fiber Light-Weight Aggregate Concrete Exposed to Elevated Temperatures

Shakir A. Salih; Ali T. Jasim

Volume 27, Issue 13 , September 2009, Page 2393-2410

https://doi.org/10.30684/etj.27.13.10

Abstract
  Two major problems arise when concrete is exposed to elevatedtemperatures. One is the deterioration in mechanical properties of concrete and the other problem is spalling of concrete. ...  Read More ...
Live Load Distribution for Steel-Girder Bridges
Live Load Distribution for Steel-Girder Bridges

Ammar A. Ali

Volume 27, Issue 13 , September 2009, Page 2411-2428

https://doi.org/10.30684/etj.27.13.11

Abstract
  Grillage method is used here to determine girder distribution factor (GDF). STAAD Pro. 2006 program is used here to represent grillage and solving for (GDF). Different GDFs are adopted ...  Read More ...
Improvement of the Performance of OCDMA By Using Error Correction Code
Improvement of the Performance of OCDMA By Using Error Correction Code

Hosham Salim; JafarM. Daif

Volume 27, Issue 13 , September 2009, Page 2429-2447

https://doi.org/10.30684/etj.27.13.12

Abstract
  In this paper a new approach is proposed for enhancement of the datatransmission optical communication systems by applying CDMA technique based error detection and correction code. ...  Read More ...
Prediction of Tigris River Stage in Qurna, South of Iraq, Using Artificial Neural Networks
Prediction of Tigris River Stage in Qurna, South of Iraq, Using Artificial Neural Networks

Ali H. Al Aboodi; Ammar S. Dawood; Sarmad A. Abbas

Volume 27, Issue 13 , September 2009, Page 2448-2456

https://doi.org/10.30684/etj.27.13.13

Abstract
  Artificial neural networks (ANNs) with back-propagation algorithm areperformed for predicting the stage of Tigris River in Qurna city, Basrah, south of Iraq. This model was adopted ...  Read More ...
Enhancing Embedded Data Security By Turns Cipher Block Chaining Mode Into Stream Cipher
Enhancing Embedded Data Security By Turns Cipher Block Chaining Mode Into Stream Cipher

Salah Mahdi Saleh

Volume 27, Issue 13 , September 2009, Page 2457-2473

https://doi.org/10.30684/etj.27.13.14

Abstract
  In this paper, a secure data hiding method is introduced. It increases the security of embedded data through combining between the steganography and cryptography. First, the secrete ...  Read More ...
Design a Position Control of the Blade Pitch Angle for Variable Speed Wind Turbine Generators
Design a Position Control of the Blade Pitch Angle for Variable Speed Wind Turbine Generators

Roshen T. Ahmed

Volume 27, Issue 13 , September 2009, Page 2474-2488

https://doi.org/10.30684/etj.27.13.15

Abstract
  Variable speed wind turbine generators are more powerful than constantspeed turbines. However the unstable wind speed causes the variable speed machine to have variable voltage and ...  Read More ...
A Practical Method for Production of Foamed Glass
A Practical Method for Production of Foamed Glass

Aseel B. Al-Zubaidi

Volume 27, Issue 13 , September 2009, Page 2489-2495

https://doi.org/10.30684/etj.27.13.16

Abstract
  A two stage preparation method of foamed glass is described here aimingto achieve reproducibility and convenience. Fritting of the solid components assembles the first stage; where ...  Read More ...
Improvement of Output Displacement of Servo Pneumatic System using Fuzzy PI Controller
Improvement of Output Displacement of Servo Pneumatic System using Fuzzy PI Controller

Mohammed Y. Hassan; Majid A. Oleiwi; Shaimaa Mahmood Mahdy

Volume 27, Issue 13 , September 2009, Page 2496-2508

https://doi.org/10.30684/etj.27.13.17

Abstract
  Pneumatic systems are widely used in industrial automation for theiradvantages such as speed of motion, low cost of maintenance, safe operation and high power/ weight ratio, cleanliness, ...  Read More ...
Analysis Up To Failure of Straight and Horizontally Curved Composite Precast Beam and Cast-In-Place Slab with Partial Interaction
Analysis Up To Failure of Straight and Horizontally Curved Composite Precast Beam and Cast-In-Place Slab with Partial Interaction

Husain M. Husain; Mohammed J. Hamood; Shaimaa Tariq Sakin

Volume 27, Issue 13 , September 2009, Page 2509-2522

https://doi.org/10.30684/etj.27.13.18

Abstract
  In this study, a nonlinear three dimensional finite element analysis has been used to conduct an analytical investigation on the behavior of curved in plan composite concrete-concrete ...  Read More ...