A Study On The Effect of Using Various Reflectivities of Output Couplers on CW Carbon Dioxide Laser Performance
A Study On The Effect of Using Various Reflectivities of Output Couplers on CW Carbon Dioxide Laser Performance
Volume 25, Issue 10 , December 2007, Page 333-336

Abstract
  A practical study has been carried out on axial flow CW CO2 laser bychanging the output coupler with a wide range of reflectivities. ZnSe mirrorswere used in various reflectivities ...  Read More ...
Effect of Super Plasticizer on the Properties of Pre-cast Concrete Flags Reinforced by Steel Fibers and Including Slag
Effect of Super Plasticizer on the Properties of Pre-cast Concrete Flags Reinforced by Steel Fibers and Including Slag

Qais J. Frieh; Bassam A. Aljabbar

Volume 25, Issue 10 , December 2007, Page 337-352

Abstract
  This research has studied the possibility of optimizing some of the properties of the precast concrete flags by using by-products of steel fragments from the CNC machines and local ...  Read More ...
Rapid Solidification Processing Of Al-3Wt%Mg Alloy
Rapid Solidification Processing Of Al-3Wt%Mg Alloy

Talib Khalel Ibrahim; Ali Sabea Humod

Volume 25, Issue 10 , December 2007, Page 1102-1109

Abstract
  Metallic ribbons were formed under a chill block melt –spinningprocess conditions for Al-3 wt% Mg alloy. X-ray diffractometry, opticalmicroscopy, electron microscopy and thermoanalytical ...  Read More ...
Numerical Investigation intoVelocity and Temperature Fields Over Smooth and Rough Ducts for Several Types of Turbulators
Numerical Investigation intoVelocity and Temperature Fields Over Smooth and Rough Ducts for Several Types of Turbulators

Sabah Tarik Ahmed; Waheed S. Mohammed; Laith J.H

Volume 25, Issue 10 , December 2007, Page 1110-1127

Abstract
  Numerical study on a laminar and turbulent fluid flow andtemperature distribution in a rectangular duct with six types of vortexgenerators has been carried out. A modified version of ...  Read More ...
Production of Organosilane by The Direct Reaction of Silicon with Methyl Chloride
Production of Organosilane by The Direct Reaction of Silicon with Methyl Chloride

Ihsan B. Hamawand; Fadi Z. Hanna; Moayed G. jalhoom

Volume 25, Issue 10 , December 2007, Page 1128-1142

Abstract
  The aim of this work is to study the production of organosilane by thecatalytic reaction of Methyl chloride (CH3Cl) with silicon (Si) and using copper(Cu) as catalyst in a fluidized ...  Read More ...
Calculation of Energy Band gap of Porous Silicon Based On The Carrier Transport Mechanisms
Calculation of Energy Band gap of Porous Silicon Based On The Carrier Transport Mechanisms

Alwan M.Alwan

Volume 25, Issue 10 , December 2007, Page 1143-1148

Abstract
  The energy bandgap of photoluminescence porous silicon is calculatedbased on the analysis of the current-voltage characteristics and themeasurements of the thermal activation energy ...  Read More ...
A Study On the Structure and Electrical Properties of Pbo.9Sn0.1Se/Si Heterojunction
A Study On the Structure and Electrical Properties of Pbo.9Sn0.1Se/Si Heterojunction

Alwan M. Alwan

Volume 25, Issue 10 , December 2007, Page 1149-1153

Abstract
  In this work, as Study on the structural and electrical properties ofPbo.9Sn0.1Se/Si hetrojunction was made by depositing compound of Lead, Tinand Selenide film on Si by thermal evaporation.XRD ...  Read More ...
The Biological Effects of Low Level Laser Therapy with Static Magnetic Field on Acute and Chronic Pain
The Biological Effects of Low Level Laser Therapy with Static Magnetic Field on Acute and Chronic Pain

Aseel A. Al-sharify

Volume 25, Issue 10 , December 2007, Page 1154-1161

Abstract
  This paper presents the biological effects of the low level laser therapy(LLLT) with static magnetic field. The therapy was applied either alone orcombined with conventional therapy ...  Read More ...
A Content-Based Authentication Using Digital Speech Data
A Content-Based Authentication Using Digital Speech Data

Hana; a M. Salman

Volume 25, Issue 10 , December 2007, Page 1162-1170

Abstract
  A watermarking technique for speech content and speaker authenticationscheme, which is based on using abstracts of speech features relevant tosemantic meaning and combined with an ID ...  Read More ...
The Effect of Annealing Temperatures on Optical and Electrical Properties of PbTe Thin Films
The Effect of Annealing Temperatures on Optical and Electrical Properties of PbTe Thin Films

Akram N . Al-Mashhadany; Noor S. Sadeq

Volume 25, Issue 10 , December 2007, Page 1171-1183

Abstract
  The study was carried out by the preparing of PbTe thin films and studying theeffect of annealing temperatures on electrical and optical properties.The PbTe thin films have been prepared ...  Read More ...
Surface Preparation of Aluminum for Plating by Zincating
Surface Preparation of Aluminum for Plating by Zincating

Mohammed Hliyil Hafiz; Baha Sami Mahdi

Volume 25, Issue 10 , December 2007, Page 1184-1193

Abstract
  The objective of this work is to gain better understanding of theinfluence of zincate bath chemistry on zincating morphology of Aluminumbond pads to provide reference for zincating ...  Read More ...