Study the Effect of Welding on Tensile and Hardness Properties for Carbon- Steel by Using Arc Welding &Tig Welding
Study the Effect of Welding on Tensile and Hardness Properties for Carbon- Steel by Using Arc Welding &Tig Welding
Volume 28, Issue 23 , November 2010, Page 1171-1183

https://doi.org/10.30684/etj.28.23.17

Abstract
  Welding is one of important industrial processes, Therefore many techniques are development to get an efficient and low cost welding for different kind of materials. This research is ...  Read More ...
Microstructure and Wear Rate of Yttria Reinforced Aluminum – Silicon Matrix Composites
Microstructure and Wear Rate of Yttria Reinforced Aluminum – Silicon Matrix Composites
Volume 28, Issue 23 , November 2010, Page 1184-1195

https://doi.org/10.30684/etj.28.23.18

Abstract
  In this research, composite materials of hypereutectic aluminum – silicon as a matrix reinforced with different volume fractions (2%, 4%, 6%, 8%) of Yttria particles with grain ...  Read More ...
Study of the Factors Affecting the Properties of the Tin Powder Produced by the Method of Centrifugal Atomization
Study of the Factors Affecting the Properties of the Tin Powder Produced by the Method of Centrifugal Atomization
Volume 28, Issue 23 , November 2010, Page 1196-1210

https://doi.org/10.30684/etj.28.23.19

Abstract
  The research includes a study for the variables of the process of centrifugalatomization for the purpose of producing pure tin metal powder and the effect ofthese variables in the properties ...  Read More ...
Effect of Initial Pressure upon Laminar Burning Velocity of Propane -Air Mixture
Effect of Initial Pressure upon Laminar Burning Velocity of Propane -Air Mixture
Volume 28, Issue 23 , November 2010, Page 1211-1220

https://doi.org/10.30684/etj.28.23.20

Abstract
  The effect of the initial pressure upon the laminar flame speed, for aPropane-air mixture, has been detected practically, for a wide range ofequivalence ratio. Measurement system is ...  Read More ...
Optimal Size and Location of Distributed Generators using Intelligent Techniques
Optimal Size and Location of Distributed Generators using Intelligent Techniques

Rashid H. Al-Rubayi; AzharM. Alrawi

Volume 28, Issue 23 , November 2010, Page 6623-6633

https://doi.org/10.30684/etj.28.23.1

Abstract
  One of the modern and important techniques in electrical distributionsystems is to solve the networks problem of service availability, high loss and low voltage stability by accommodating ...  Read More ...
Hydroforming of High Purity Copper Sheet To Produce Different Shapes
Hydroforming of High Purity Copper Sheet To Produce Different Shapes

Adnan IbrahimMohammed; Mahdi Muter Hanoon; Abbas Abudallah Ahmed

Volume 28, Issue 23 , November 2010, Page 6634-6641

https://doi.org/10.30684/etj.28.23.2

Abstract
  The present research is focused on experimental results and theoreticalanalysis of sheet hydronning of high purity copper with circular and square shapes under the biaxial stresses. ...  Read More ...
Spectral Characteristics of Cholesterol in Blood by Using Simple Semiconductor Laser
Spectral Characteristics of Cholesterol in Blood by Using Simple Semiconductor Laser

Abdul Rahman Rashid Mohammed

Volume 28, Issue 23 , November 2010, Page 6642-6648

https://doi.org/10.30684/etj.28.23.3

Abstract
  In the present work, the possibility of using laser to analyze and find the concentration of total cholesterol (TC) in serum. Semiconductor laser diode of 5mW maximum power, 532nm wavelength ...  Read More ...
Reducing Settlement of Soft Soils Using Local Materials
Reducing Settlement of Soft Soils Using Local Materials

Mohammed A. Mahmoud Al-Neami

Volume 28, Issue 23 , November 2010, Page 6649-6661

https://doi.org/10.30684/etj.28.23.4

Abstract
  The present work investigates the settlement behaviour of weak soils which cover the middle and southern part of Iraq. Physical and chemical properties were studied for weak soil brought ...  Read More ...
Image Watermarking Using DWT_DCT
Image Watermarking Using DWT_DCT

Bassim Abdulbaki Jumaa; Arwa Aladdin

Volume 28, Issue 23 , November 2010, Page 6662-6675

https://doi.org/10.30684/etj.28.23.5

Abstract
  Digital watermarking has been developed to protect digital images fromillegal manipulation. Discrete wavelet Transform (DWT) and Discrete Cosine Transform (DCT) are techniques used ...  Read More ...
Evaluating Probabilities of Technical And Commercial Success And Using Them In Screening New Product Ideas
Evaluating Probabilities of Technical And Commercial Success And Using Them In Screening New Product Ideas

Abdulamir Bektash Wali

Volume 28, Issue 23 , November 2010, Page 6676-6687

https://doi.org/10.30684/etj.28.23.6

Abstract
  The screening of new product ideas is perhaps the most critical activity in innovation process and development of new products, the process is associated with uncertainty and complexity.Probabilities ...  Read More ...
Effect of Addition Of Copper and Copper –Nickel Elements on Structure and Properties of Low Carbon Steels
Effect of Addition Of Copper and Copper –Nickel Elements on Structure and Properties of Low Carbon Steels

Munthir Mohammed Radhy

Volume 28, Issue 23 , November 2010, Page 6688-6702

https://doi.org/10.30684/etj.28.23.7

Abstract
  The purpose of this study is to investigate the effect of adding different amounts(2, 4, 6% of Cu) on properties and microstructure of low carbon steel .Also studythe effect of the ...  Read More ...
Role of Testosteronthiosemicarbazone as an Antibacterial Agent
Role of Testosteronthiosemicarbazone as an Antibacterial Agent

Abbas A. Al-Janabi; Suhad A. Ahmed; Huda A. Hussein

Volume 28, Issue 23 , November 2010, Page 6703-6708

https://doi.org/10.30684/etj.28.23.8

Abstract
  A ligand of testosteronthiosemicarbazone was prepared, the chemicalcharacteristics of this ligand are: yellow powder, soluble in alcohol and its melting point is 100 – 102 °C. ...  Read More ...
Effect of Diffusion Bonding on Fatigue Strength of Aluminum Alloy AA 7020-O
Effect of Diffusion Bonding on Fatigue Strength of Aluminum Alloy AA 7020-O

Adnan N. Abood; Moneer H. Tolephih; Esam J. Ebraheam

Volume 28, Issue 23 , November 2010, Page 6709-6717

https://doi.org/10.30684/etj.28.23.9

Abstract
  The aim of this research is to study the fatigue behavior of aluminum alloyAA7020-O joining by diffusion welding with simple self pressurizing fixture inmuffle furnace. This alloy was ...  Read More ...
Limitation of Laser Satellite Communication Due To Vibrations and Atmospheric Turbulences
Limitation of Laser Satellite Communication Due To Vibrations and Atmospheric Turbulences

Tarq A.Mohhmad

Volume 28, Issue 23 , November 2010, Page 6718-6731

https://doi.org/10.30684/etj.28.23.10

Abstract
  In this research, we analyze the effects of vibrations and the atmospheric onturbulence for a broadband laser satellite down link (BLSDL). The use of opticalradiation as a carrier between ...  Read More ...
The Effect of Solid on the Homogenous- Heterogeneous Transition Region in Baffled and Unbaffled Bubble Column with Non-Newtonian Liquid
The Effect of Solid on the Homogenous- Heterogeneous Transition Region in Baffled and Unbaffled Bubble Column with Non-Newtonian Liquid

Asawer A. Alwasiti; Farah T. Alsudany; Shrooq T. Alhemeri

Volume 28, Issue 23 , November 2010, Page 6732-6749

https://doi.org/10.30684/etj.28.23.11

Abstract
  This research shows a comprehensive study on the effect of solid loadingand non-Newtonian liquid on the hydrodynamic parameter of gas holdup as wellas the critical values of gas holdup ...  Read More ...
Design and Implementation of A Fpga Based Software Defined Radio Using Simulink HDL Coder
Design and Implementation of A Fpga Based Software Defined Radio Using Simulink HDL Coder

Hikmat N. Abdullah; Hussein A. Hadi

Volume 28, Issue 23 , November 2010, Page 6750-6768

https://doi.org/10.30684/etj.28.23.12

Abstract
  This paper presents the design procedure and implementation results of aproposed software defined radio (SDR) using Altera Cyclone II family board. Theimplementation uses Matlab/SimulinkTM, ...  Read More ...
Effect of the Composite Material of the Car's Bumper on its Fundamental Natural Frequency and Response As A Result of Car Vibration
Effect of the Composite Material of the Car's Bumper on its Fundamental Natural Frequency and Response As A Result of Car Vibration

Ruaa Yaseen Hammoudi

Volume 28, Issue 23 , November 2010, Page 6768-6784

https://doi.org/10.30684/etj.28.23.13

Abstract
  Effect of vibration on the car's bumper was studied in this paper.Composite materials are used in manufacturing the car's bumper. The methods thatused in this investigation are Rayleigh's ...  Read More ...
Comparison Between Adaptive Fuzzy and PID Fuzzy Automotive Engine Controllers in Idle Speed Mode
Comparison Between Adaptive Fuzzy and PID Fuzzy Automotive Engine Controllers in Idle Speed Mode

Mohammed Y. Hassan; Saba T. Al -Wais

Volume 28, Issue 23 , November 2010, Page 6785-6800

https://doi.org/10.30684/etj.28.23.14

Abstract
  Automatic control of automotive engines provides benefits in the enginesperformance like emission reduction, fuel economy and drivability. To ensure betterachievement of these requirements ...  Read More ...
B-Spline Functions for Solving nth Order Linear Delay Integro- Differential Equations of Convolution Type
B-Spline Functions for Solving nth Order Linear Delay Integro- Differential Equations of Convolution Type

Raghad Kadhim Salih; Atheer Jawad Kadhim; Fuad A. Al-Heety

Volume 28, Issue 23 , November 2010, Page 6801-6813

https://doi.org/10.30684/etj.28.23.15

Abstract
  The paper is devoted to solve nth order linear delay integro-differentialequations of convolution type (DIDE's-CT) using Galerkin's method with B-splinefunctions. A new algorithm with ...  Read More ...
Damping of Power System Oscillations by Using Coordinated Control of PSS and STATCOM Devices
Damping of Power System Oscillations by Using Coordinated Control of PSS and STATCOM Devices

Rashid H. Al- Rubayi; Inaam Ibrahim Ali

Volume 28, Issue 23 , November 2010, Page 6814-6830

https://doi.org/10.30684/etj.28.23.16

Abstract
  The main objective of this paper is to investigate the power system stability enhancement via coordinated control of PSS and static synchronous compensator (STATCOM) based controllers. ...  Read More ...