Improvement of Vertical Savonius Wind Turbine Performance
Improvement of Vertical Savonius Wind Turbine Performance

Mohammed Hassan Ali Al Musawi

Volume 31, Issue 14 , September 2013, Page 2596-2610

https://doi.org/10.30684/etj.31.14A.1

Abstract
  This work presents a study of the vertical Savonuis wind rotor, including design, construct, and test, with a new configuration parameters, to improve its performance. The new rotor's ...  Read More ...
Influence of Ceramic Particles Reinforcement on some Mechanical Properties of AA 6061 Aluminium Alloy
Influence of Ceramic Particles Reinforcement on some Mechanical Properties of AA 6061 Aluminium Alloy

Jameel Habeeb Ghazi

Volume 31, Issue 14 , September 2013, Page 2611-2618

https://doi.org/10.30684/etj.31.14A.2

Abstract
  This paper is to investigate the influence of adding 5,10 and 15 weight percentage silicon carbide particles on some mechanical properties of 6061 Aluminium alloy. The composites Al6061/SiC ...  Read More ...
Experimental and Theoretical Study of Vacuum Cooling System
Experimental and Theoretical Study of Vacuum Cooling System

Ahmed A. M. Saleh; Qussai J. Abdul Ghafour; Luay T. Al-Rawi

Volume 31, Issue 14 , September 2013, Page 2619-2631

https://doi.org/10.30684/etj.31.14A.3

Abstract
  A vacuum cooling system and the parameters which affect on its performance were studied experimentally and theoretically. For the experimental study the rig was built up to studying ...  Read More ...
Study Natural Convection in a Porous Trapezoidal Cavity with a Square Body at the Center of the Enclosure
Study Natural Convection in a Porous Trapezoidal Cavity with a Square Body at the Center of the Enclosure

Zainab K. Radhi

Volume 31, Issue 14 , September 2013, Page 2632-2649

https://doi.org/10.30684/etj.31.14A.4

Abstract
  Steady state free convection heat transfer in a two dimensional trapezoidal enclosure filled with a fluid-saturated porous medium with a square solid body located at the center of cavity, ...  Read More ...
Bi2-Xhgxsr2-Ybaycacu2o8/Ag Sheath HTSC Wires, (Hg, Ba) Substitution Effect on the Critical Temperature
Bi2-Xhgxsr2-Ybaycacu2o8/Ag Sheath HTSC Wires, (Hg, Ba) Substitution Effect on the Critical Temperature

Akram R. Jabur; Matti N. Makadsi; Mohammed S.Mehde

Volume 31, Issue 14 , September 2013, Page 2650-2664

https://doi.org/10.30684/etj.31.14A.5

Abstract
  Bi2-xHgxSr2-yBayCaCu2O8 High Temperature Superconductor (HTSC) has been prepared as a pellet by solid state reaction with a certain substitution percentages (0 ,0.05 ,0.1) of Hg and ...  Read More ...
PSO-Based Optimum Design Of PID Controller for Switching Reluctance Motor
PSO-Based Optimum Design Of PID Controller for Switching Reluctance Motor

Ekhlas M. Thejeel; Mazin M. Mahdi; Zainab N. Abbass

Volume 31, Issue 14 , September 2013, Page 2665-2679

https://doi.org/10.30684/etj.31.14A.6

Abstract
  This paper presents simulation results for three phase, 6/4 poles switched reluctance motor (SRM) by using particle swarm optimization (PSO) method for formative the optimal proportional-integral-derivative ...  Read More ...
Increasing the Protocol Gain of Quantum Cryptography
Increasing the Protocol Gain of Quantum Cryptography

Firas Ali Sabir Al-Juboori; Noor Kareem Juma; a Al-Mandilawi

Volume 31, Issue 14 , September 2013, Page 2680-2691

https://doi.org/10.30684/etj.31.14A.7

Abstract
  Quantum cryptography is a technique to distribute a sequence of truly random and unconditionally secure bits over a secure communication by applying the phenomena of quantum physics. ...  Read More ...
Effect of Quenching Media on Wear Resistance of AISI 52100 Bearing Steel Alloy
Effect of Quenching Media on Wear Resistance of AISI 52100 Bearing Steel Alloy

Enaam obeid hassoun

Volume 31, Issue 14 , September 2013, Page 2692-2700

https://doi.org/10.30684/etj.31.14A.8

Abstract
  A study has been made to evaluate wear behavior of AISI 52100 steel under different quenching media. This investigation was accomplished by two stages. In the first stage of the study ...  Read More ...
A Comparison Study of Mechanical Properties between Friction StirWelding and TIG Welded Joints of Aluminum Alloy (Al 6061-T6)
A Comparison Study of Mechanical Properties between Friction StirWelding and TIG Welded Joints of Aluminum Alloy (Al 6061-T6)

Muna Khethier Abbass; Hassan Hady Abd

Volume 31, Issue 14 , September 2013, Page 2701-2715

https://doi.org/10.30684/etj.31.14A.9

Abstract
  In this study two different welding processes have been considered, a conventional tungsten inert gas (TIG) and a relatively new solid state welding known as friction stir welding (FSW). ...  Read More ...
Aluminum Filler Content Effect on the Dynamic Behavior of Sandwich Panel Subjectedt Impact Load
Aluminum Filler Content Effect on the Dynamic Behavior of Sandwich Panel Subjectedt Impact Load

Farag Mahel mohammed; Khalid Mershed A; Sinan Zuhair Sabri

Volume 31, Issue 14 , September 2013, Page 2716-2726

https://doi.org/10.30684/etj.31.14A.10

Abstract
  Experimental investigations had been done in this work to demonstrate the effect of aluminum filler contents on the dynamic behavior of (30%) weight fraction glass-polyester sandwich ...  Read More ...
Practical Application and Construction for Mobile Robot
Practical Application and Construction for Mobile Robot

Mohamed Jasim Mohamed; Mustaffa waad Abbas

Volume 31, Issue 14 , September 2013, Page 2727-2745

https://doi.org/10.30684/etj.31.14A.11

Abstract
  This paper describes the construction of a rover mobile robot which is used to follow the resultant optimal path from the global path planning technique. A remote computer is used to ...  Read More ...
Investigation of Correlation and Prediction of Excess Molar Volume Using Different Equations of States
Investigation of Correlation and Prediction of Excess Molar Volume Using Different Equations of States

M. O. Abdullah; Venus M. BakallBashy; Fatma Dhaif Ali

Volume 31, Issue 14 , September 2013, Page 2746-2759

https://doi.org/10.30684/etj.2013.83373

Abstract
  Prediction and correlation of accurate value of excess molar volume VE are ofgreat interest for adequate design of industrial process and for theoriticalpurpose.Soave RedlichKwong (SRK-EOS), ...  Read More ...
Experimental Behavior of Circular Steel Tubular Columns Filled with Self-Compacting Concrete under Concentric Load
Experimental Behavior of Circular Steel Tubular Columns Filled with Self-Compacting Concrete under Concentric Load

Saad N. Sadik; Wael S. Abdul-Sahib; Ammar A. Ali

Volume 31, Issue 14 , September 2013, Page 2760-2772

https://doi.org/10.30684/etj.2013.83259

Abstract
  This paper presents an experimental study on the behavior of circular, concretefilled,steel tube (CFT) columns concentrically loaded in compression to failure. Selfcompactingconcrete ...  Read More ...
Development of a Computer System to Find the Productivity of the Road Finisher
Development of a Computer System to Find the Productivity of the Road Finisher

raid Salem abid ali

Volume 31, Issue 14 , September 2013, Page 225-248

https://doi.org/10.30684/etj.2013.83260

Abstract
  The infrastructures are one of the basic elements which reflect nation’sdevelopment; therefore infrastructures are the main concern for all of the Officialsresponsible for development ...  Read More ...
Interactive Architectural Design
Interactive Architectural Design

Enas Salim AbdulAhadd; Rana Mazin Mahdi

Volume 31, Issue 14 , September 2013, Page 249-263

https://doi.org/10.30684/etj.2013.83261

Abstract
  Our time is an era of development of technological digital (connectional_ Informational)، which affected on human life. Thus it has an impact on thebuilt environment according to the ...  Read More ...