HVDC Transmission Systems based Multi-level Voltage Source Converters for Iraqi Super Grid
HVDC Transmission Systems based Multi-level Voltage Source Converters for Iraqi Super Grid

Adil Hameed Ahmed; Ahmed Saeed Abdul-Sada

Volume 32, Issue 7 , August 2014, Page 1602-1617

https://doi.org/10.30684/etj.32.7A.1

Abstract
  High Voltage Direct Current Transmission (HVDC) with Voltage Source Converter (VSC) technology provides substantial technical and economical advantages for different applications compared ...  Read More ...
Studying the Rheological and Diffusion Properties of Polypropylene-Polymethylmethacrylate Reinforced with Bentonite
Studying the Rheological and Diffusion Properties of Polypropylene-Polymethylmethacrylate Reinforced with Bentonite

Abbas A. Jawad

Volume 32, Issue 7 , August 2014, Page 1618-1639

https://doi.org/10.30684/etj.32.7A.2

Abstract
  In the present research , the rheological and the diffusion properties of polymer melt composed of (polypropylene- polymethylmethacrylate ) unfilled_ filled with different amounts of ...  Read More ...
Experimental Analysis of Heat Transfer with Dropwise and Filmwise Condensation on Inclined Double Tubes Heat Exchanger
Experimental Analysis of Heat Transfer with Dropwise and Filmwise Condensation on Inclined Double Tubes Heat Exchanger

Abdulhassan A. Karamallah; Assim H. Yousif; Ban M. Mohammed

Volume 32, Issue 7 , August 2014, Page 1640-1654

https://doi.org/10.30684/etj.32.7A.3

Abstract
  Dropwise condensation provides larger heat transfer coefficients compared to filmwise condensation, as discovered in the year 1930 by Schmid et al. Dropwise condensation can be described ...  Read More ...
Design and Implementation of Programmable Multi-Mode Digital Modulator for SDR Using FPGA
Design and Implementation of Programmable Multi-Mode Digital Modulator for SDR Using FPGA

Majid S. Naghmash

Volume 32, Issue 7 , August 2014, Page 1655-1670

https://doi.org/10.30684/etj.32.7A.4

Abstract
  The design of programmable multi-mode digital modulator for software defined radio (SDR) technology using FPGA is developed and investigated in this paper. The system generator from ...  Read More ...
The Effect of Carbon Fiber Reinforced Polymer Length on the Strengthened of Concentrically loaded Reinforced Concrete Beams : Finite Element Analysis
The Effect of Carbon Fiber Reinforced Polymer Length on the Strengthened of Concentrically loaded Reinforced Concrete Beams : Finite Element Analysis

Nada S. Assi

Volume 32, Issue 7 , August 2014, Page 1671-1683

https://doi.org/10.30684/etj.32.7A.5

Abstract
  Carbon fiber reinforced polymer (CFRP) plates are commonly used to increase the ultimate strength of concrete structures in flexure. CFRP plates are also an effective means of rehabilitation ...  Read More ...
Improvement of DOA Estimation based on Lanczos Algorithm
Improvement of DOA Estimation based on Lanczos Algorithm

Sinan Majid Abdul Satar; Hussein Abdul Adil Mohmmad

Volume 32, Issue 7 , August 2014, Page 1684-1694

https://doi.org/10.30684/etj.32.7A.6

Abstract
  In this paper, the problem of estimating the Direction Of Arrival (DOA) is presented. DOA based on Eigen Vector Decomposition (EVD) shows that the computational complexities are costly ...  Read More ...
A 2.4 GHz Differential Class-E power Amplifier with on-chip Transformers for Bluetooth systems
A 2.4 GHz Differential Class-E power Amplifier with on-chip Transformers for Bluetooth systems

Abbas H. Issa; Ahmed S. Ezzulddin; Sarab M. Ghayyib

Volume 32, Issue 7 , August 2014, Page 1695-1706

https://doi.org/10.30684/etj.32.7A.7

Abstract
  This work presents the design and simulation of a differential class-E Power Amplifier (PA) for class-1 Bluetooth systems in 0.13 μm RF CMOS technology. The proposed PA can deliver ...  Read More ...
Separation of Aluminum Chloride from White Kaolinite by Slime Leaching Process
Separation of Aluminum Chloride from White Kaolinite by Slime Leaching Process

Sami Abualnoun Ajeel; Faeza Ali Sameer; Nawal Izat AbdulLatif

Volume 32, Issue 7 , August 2014, Page 1707-1719

https://doi.org/10.30684/etj.32.7A8

Abstract
  White kaolinite materials are available raw materials in the western desert in Iraq which exist in Al-Amige region within sediments near the surface. White kaolinite is a high grade ...  Read More ...
Study of Wear Behavior of Aluminum Alloy Matrix Nanocomposites Fabricated by Powder Technology
Study of Wear Behavior of Aluminum Alloy Matrix Nanocomposites Fabricated by Powder Technology

Muna Khethier Abbass; Mohammed Jabber Fouad

Volume 32, Issue 7 , August 2014, Page 1720-1732

https://doi.org/10.30684/etj.32.7A9

Abstract
  In the present work, the dry sliding wear behavior of Al-12wt%Si matrix nanocomposites reinforced with single addition of 4wt.% Al2O3 or 4wt.%TiO2 nanoparticles, and with hybrid addition ...  Read More ...
Effect of Cavity in Sandy Soil on Load Distribution of Pile Group
Effect of Cavity in Sandy Soil on Load Distribution of Pile Group

Mohammed Y. Fattah; Karim H. Ibrahim. Al-Helo; Hala H. Abed

Volume 32, Issue 7 , August 2014, Page 1733-1751

https://doi.org/10.30684/etj.32.7A10

Abstract
  The present study investigates the influence of presence of cavities on adjacent buildings especially in the case of piled structures. The presence of cavity affects on the bearing ...  Read More ...
Design of Wind Turbine Energy System Based on Matlab/Simulink
Design of Wind Turbine Energy System Based on Matlab/Simulink

Zaki Majeed Abdullah; Ahmed M. T. Ibraheem Alnaib; Omar Talal Mahmood

Volume 32, Issue 7 , August 2014, Page 1752-1763

https://doi.org/10.30684/etj.32.7A11

Abstract
  This paper presents modelling and simulation of wind turbine - electrical generation system using Matlab/Simulink software package. This system consists of wind turbine coupled with ...  Read More ...
Effect of Blank Holder Inclination Angle on Deep Drawing of Round Mild Steel Cup with Flange
Effect of Blank Holder Inclination Angle on Deep Drawing of Round Mild Steel Cup with Flange

Karem M. Younis; Jalil J. Shukur

Volume 32, Issue 7 , August 2014, Page 1764-1775

https://doi.org/10.30684/etj.32.7A12

Abstract
  The work aim to study the effect of the blank holder slope angle on deep drawing parameters such as: punch force, strain state and thickness distribution along cup wall of drawn part. ...  Read More ...
Systematic Analysis and Design of Single-Phase Boost PFC Converter for Induction Motor Drive
Systematic Analysis and Design of Single-Phase Boost PFC Converter for Induction Motor Drive

Jafar H. Alwash; Turki K. Hassan; Raed F. Abbas

Volume 32, Issue 7 , August 2014, Page 1776-1796

https://doi.org/10.30684/etj.32.7A13

Abstract
  This paper presents a systematic analysis and design of a single-phase boost power factor correction (PFC) converter supplying an inverter-motor drive system. The PFC converter is a ...  Read More ...
Design and Implementation of Discrete Multitone Modulator for Digital Subscriber Line Using FPGA
Design and Implementation of Discrete Multitone Modulator for Digital Subscriber Line Using FPGA

Hadi T. Ziboon; Ikhlas M. Farhan

Volume 32, Issue 7 , August 2014, Page 1797-1810

https://doi.org/10.30684/etj.32.7A14

Abstract
  This paper presents a design, simulation and implementation of the Discrete Multitone (DMT) modulator for digital subscriber line (DSL) for both complex and real transmission based ...  Read More ...
Studying and Modeling the Effects of Quartz Addition and Heat Treatment on Mechanical Properties of Glass-Ceramic Coating
Studying and Modeling the Effects of Quartz Addition and Heat Treatment on Mechanical Properties of Glass-Ceramic Coating

Ali H. Ataiwi; Ibtihal A. Mahmood; Jabbar H. mohmmed

Volume 32, Issue 7 , August 2014, Page 1811-1824

https://doi.org/10.30684/etj.32.7A15

Abstract
  In this work, a new glass-ceramic coating has been developed and applied, as a single coat without prior chemical treatment of the surface, using the dipping technique on metal substrate. ...  Read More ...
Removal of SO2 over Modified ActivatedCarbon in Fixed Bed Reactor: II.Effect ofProcess Variables on the Characteristics of Mass Transfer Zone
Removal of SO2 over Modified ActivatedCarbon in Fixed Bed Reactor: II.Effect ofProcess Variables on the Characteristics of Mass Transfer Zone

Neran Khalel Ibrahim; Shahrazad Refat Raouf; Zainab Adnan Nasir

Volume 32, Issue 7 , August 2014, Page 1825-1842

https://doi.org/10.30684/etj.32.7A16

Abstract
  Adsorption of sulfur dioxide (SO2) onto NiO supported activated carbon (Ni/AC)in fixed bed reactor under different operating conditions was studied. Using 7Ni/AC catalyst, the effect ...  Read More ...
Design and Modelling of (Fe /Zro2) Functionally Graded Materials (Part I)
Design and Modelling of (Fe /Zro2) Functionally Graded Materials (Part I)

Alaa Abdulhasan Atiyah; Ahmed Taifor Aziz

Volume 32, Issue 7 , August 2014, Page 1843-1858

https://doi.org/10.30684/etj.32.7A17

Abstract
  It is hoped to design and modeling of five layers Fe/ZrO2 functionally graded materials for high temperature applications in this paper. The design part, were started with the supposing ...  Read More ...
Surface Modification of Multiwall Carbon Nanotubes for Metal Matrix Nan composite Applications
Surface Modification of Multiwall Carbon Nanotubes for Metal Matrix Nan composite Applications

Ahmed Ali Moosa; Abdul Qader Faisal; Righdan Mohsen Namus

Volume 32, Issue 7 , August 2014, Page 1859-1869

https://doi.org/10.30684/etj.32.7A18

Abstract
  MWCNTs first functionalized by using two steps covalent functionalization process. Functionalized MWCNTs coated with copper by using electroless coating process. Three different groups ...  Read More ...
Comparative Study of the Mechanical Properties of Two Groups Ternary Polymer Blends Composites
Comparative Study of the Mechanical Properties of Two Groups Ternary Polymer Blends Composites

Sihama E. salih; Akram R. Jabur; Teeb A. Mohammed

Volume 32, Issue 7 , August 2014, Page 1870-1886

https://doi.org/10.30684/etj.32.7A19

Abstract
  Thermoplastic polymer blends composites were prepared as strips by double screw extruder. The prepared composites consists of two groups, the first group was prepared as ternary polymer ...  Read More ...
Investigation of the Elements of Critical Thinking in the Educational Process in the Jurisdiction of Architecture
Investigation of the Elements of Critical Thinking in the Educational Process in the Jurisdiction of Architecture

Nawfal Josef Rizco

Volume 32, Issue 7 , August 2014, Page 196-221

https://doi.org/10.30684/etj.32.7A20

Abstract
  Thinking is a mental act the person uses it when he is facing a special attitude or a problem. as he tries to reach the appropriate solutions. Which is an integral part of the behavioral ...  Read More ...