Number of Articles: 20
HVDC Transmission Systems based Multi-level Voltage Source Converters for Iraqi Super Grid
Volume 32, Issue 7 , August 2014, Page 1602-1617
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
Volume 32, Issue 7 , August 2014, Page 1618-1639
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
Volume 32, Issue 7 , August 2014, Page 1640-1654
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
Volume 32, Issue 7 , August 2014, Page 1655-1670
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
Volume 32, Issue 7 , August 2014, Page 1671-1683
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
Volume 32, Issue 7 , August 2014, Page 1684-1694
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
Volume 32, Issue 7 , August 2014, Page 1695-1706
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
Volume 32, Issue 7 , August 2014, Page 1707-1719
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
Volume 32, Issue 7 , August 2014, Page 1720-1732
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
Volume 32, Issue 7 , August 2014, Page 1733-1751
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
Volume 32, Issue 7 , August 2014, Page 1752-1763
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
Volume 32, Issue 7 , August 2014, Page 1764-1775
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
Volume 32, Issue 7 , August 2014, Page 1776-1796
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
Volume 32, Issue 7 , August 2014, Page 1797-1810
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
Volume 32, Issue 7 , August 2014, Page 1811-1824
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
Volume 32, Issue 7 , August 2014, Page 1825-1842
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)
Volume 32, Issue 7 , August 2014, Page 1843-1858
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
Volume 32, Issue 7 , August 2014, Page 1859-1869
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
Volume 32, Issue 7 , August 2014, Page 1870-1886
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
Volume 32, Issue 7 , August 2014, Page 196-221