Hydrochemical Evaluation of Erbil City Aquifer / North of Iraq
Hydrochemical Evaluation of Erbil City Aquifer / North of Iraq

Mohammed Jaafer Al-Qazwini; Tareq Abdul-Hussain; Sawsan Hasson. Mohammed

Volume 27, Issue 10 , July 2009, Page 310-332

https://doi.org/10.30684/etj.27.10.19

Abstract
  Eribl city lies in the north part of Iraq within the middle basin of Eribl plain(1400) km2, while the city of Eribl is only (70) km2. The research deals with thestudy of hydrochemical ...  Read More ...
Study of Polymer Quenchants Effect on Some Properties of Stainless Steel alloy (316L).
Study of Polymer Quenchants Effect on Some Properties of Stainless Steel alloy (316L).

Walid Essam Hanna; Laith Qais. Abbas; Manar Abdul-Jabar. Najim

Volume 27, Issue 10 , July 2009, Page 333-348

https://doi.org/10.30684/etj.27.10.20

Abstract
  This study is concerned with the effect of polymer quenching on someproperties of an austenitic stainless steel alloy (316L). Three different operationsof heat treatment have been done ...  Read More ...
Quantitative Analysis of Ternary Alloy's Content By means of Laser Induced Plasma Emission Spectroscopy
Quantitative Analysis of Ternary Alloy's Content By means of Laser Induced Plasma Emission Spectroscopy

Mazin M. Elias; Ahmed A. Moosa; Ali Z. Al-Aloosy

Volume 27, Issue 10 , July 2009, Page 1891-1900

https://doi.org/10.30684/etj.27.10.1

Abstract
  A quantitative elemental analysis of ternary alloy's content was carried outwith laser induced plasma emission spectroscopy. An energetic Nd: glass laserhave been focused on a set of ...  Read More ...
Heat Transfer from an Immersed Heater in Liquid – Liquid – Solid Fluidized Beds
Heat Transfer from an Immersed Heater in Liquid – Liquid – Solid Fluidized Beds

Balasim A. Abid; Majid I. Abdul-Wahab; Asrar A. Al-Obaidy

Volume 27, Issue 10 , July 2009, Page 1901-1914

https://doi.org/10.30684/etj.27.10.2

Abstract
  Heat transfer from an immersed heating surface to a liquid-solid and liquid-liquidsolid fluidized beds have been studied. The experiments were carried out in a (0.22) m column diameter ...  Read More ...
The Effect of Zr loading on the Performance of Honeycomb Monolithic catalyst for the Removal of NO , CO and Hydrocarbon from Exhaust Gas
The Effect of Zr loading on the Performance of Honeycomb Monolithic catalyst for the Removal of NO , CO and Hydrocarbon from Exhaust Gas

Abdul Halim Abdul K.Mohammed; Shahrazed R.Rauof; Hussain Khalaf

Volume 27, Issue 10 , July 2009, Page 1915-1936

https://doi.org/10.30684/etj.27.10.3

Abstract
  Catalytic monolith reactors have numerous applications in industrialprocesses and as technical devices, so the focus is set specially on automotive catalytic converters. In present ...  Read More ...
A New Narrow Band Dual-Mode Miniaturized Bandpass Filter Design for Wireless Communication Systems
A New Narrow Band Dual-Mode Miniaturized Bandpass Filter Design for Wireless Communication Systems

Nasr N Hussain; Jawad K. Ali

Volume 27, Issue 10 , July 2009, Page 1937-1951

https://doi.org/10.30684/etj.27.10.4

Abstract
  A new narrowband, compact, and low profile microstrip filter design ispresented in this paper as a candidate for use in modern wireless systems. The proposed design is based on the ...  Read More ...
Lineaments Analysis and Mapping From Satellite Images For Southern Iraq
Lineaments Analysis and Mapping From Satellite Images For Southern Iraq

Hussain Z. Ali; Hussein H. Karim; Ahmed H. Hamdullah

Volume 27, Issue 10 , July 2009, Page 1952-1965

https://doi.org/10.30684/etj.27.10.5

Abstract
  Synergistic display of data recorded by different remote sensing has proved extremely valuable for the extraction of geological features such as lineaments . Accordingly , two satellite ...  Read More ...
Expansion Method For Solving Linear Delay Integro- Differential Equation Using B- Spline Functions
Expansion Method For Solving Linear Delay Integro- Differential Equation Using B- Spline Functions

Hayat Adel Ali

Volume 27, Issue 10 , July 2009, Page 1966-1975

https://doi.org/10.30684/etj.27.10.6

Abstract
  The main goal of this paper lies briefly in submitting and modifying somemethods for solving linear delay integro-differential equations (L-DIDEs)containing three types (retarded, neutral ...  Read More ...
Improving Keystream Generation for Sosemanuk Stream Cipher Using Twofish Block Cipher
Improving Keystream Generation for Sosemanuk Stream Cipher Using Twofish Block Cipher

Shant K. Avakian; Rana S. Mohammed

Volume 27, Issue 10 , July 2009, Page 1976-1991

https://doi.org/10.30684/etj.27.10.7

Abstract
  This paper will introduce two proposal algorithms (Snowfish 1) and the (Snowfish 2) to improve the Sosemanuk stream cipher algorithm by benefiting from the efficient properties of the ...  Read More ...
Modeling ofMixing in The Liquid Phase For Bubble Column
Modeling ofMixing in The Liquid Phase For Bubble Column

Ali H. Jawad

Volume 27, Issue 10 , July 2009, Page 1992-2007

https://doi.org/10.30684/etj.27.10.8

Abstract
  Hydrodynamic characteristics (mixing in the liquid phase) in a bubble column with a non-Newtonian liquid phase (aqueous solutions of carboxymethylcellulose, or CMC, at different concentrations) ...  Read More ...
Design and Simulation of Digital PLL Synchronizer for BPSK and QPSK Based on Software Defined Radio
Design and Simulation of Digital PLL Synchronizer for BPSK and QPSK Based on Software Defined Radio

H. T. Ziboon; A. A. Thabit

Volume 27, Issue 10 , July 2009, Page 2008-2026

https://doi.org/10.30684/etj.27.10.9

Abstract
  This paper presents a design and simulation of digital PLL synchronizer, usingCostas loop based on SDR for high frequency communication systems. Designparameters are selected for each ...  Read More ...
Consolidation Characteristics of Unsaturated Soil
Consolidation Characteristics of Unsaturated Soil

Firas J. Kadhim; Mohammed Y. Fattah

Volume 27, Issue 10 , July 2009, Page 2027-2046

https://doi.org/10.30684/etj.27.10.10

Abstract
  The most common three-phase problem in porous media is the flow of air and water. This is for example found in the unsaturated zone, where water infiltrates through partly saturated ...  Read More ...
A General Equation for the Flexural – Membrane Behaviour of Rigid – Plastic RC Square Slabs Having Variously Restrained Edges
A General Equation for the Flexural – Membrane Behaviour of Rigid – Plastic RC Square Slabs Having Variously Restrained Edges

Waleed H. Mohammed; Hisham M. Al-Hassani

Volume 27, Issue 10 , July 2009, Page 2047-2060

https://doi.org/10.30684/etj.27.10.11

Abstract
  Uniformly loaded rigid – plastic reinforced concrete (RC) square slabs havingsix different cases of boundary restraints have been recently analyzed(1) under thecombined effect ...  Read More ...
Aِ studing The Effect of Chemical Composition of Workpiece on Built Up Edge Formation And Surface Roughness
Aِ studing The Effect of Chemical Composition of Workpiece on Built Up Edge Formation And Surface Roughness

Saad kariem shather

Volume 27, Issue 10 , July 2009, Page 2061-2071

https://doi.org/10.30684/etj.27.10.12

Abstract
  the phenomena built-up edge was the unwanted rough edge on cutting tool that is created by workpiece material welding onto the tool during cutting , occurs at the chip/tool interface ...  Read More ...
Simple Treatment Of Textile Industry Wastewater For Reuse And Recycling
Simple Treatment Of Textile Industry Wastewater For Reuse And Recycling

M. Sh. J. Al-Muhamadawi; M. A. Zablouk; Mahmood M. Barbooti

Volume 27, Issue 10 , July 2009, Page 2072-2084

https://doi.org/10.30684/etj.27.10.13

Abstract
  The aim of the present work is at describing a simple physico-chemicaltreatment for the textile wastewater of a local plant to bring its characteristics tothat used within the plant. ...  Read More ...
Attribute Adjacency Matrix Approach for Extracting and Recognizing Manufacturing Prismatic Features from CAD Models
Attribute Adjacency Matrix Approach for Extracting and Recognizing Manufacturing Prismatic Features from CAD Models

Omar H. Hussoon; Hussein S. Ketan

Volume 27, Issue 10 , July 2009, Page 2085-2099

https://doi.org/10.30684/etj.27.10.14

Abstract
  This paper introduces Developed Attributes Adjacency Matrix (DAAM)approach for extracting and recognizing of part’s features, by deal with decouplingor isolated manufacturing ...  Read More ...
Aircraft Jet Engine Electrical Starting System
Aircraft Jet Engine Electrical Starting System

Ahmed Mahmood Mohammed; Nowfal Mohammed Tahir

Volume 27, Issue 10 , July 2009, Page 2100-2112

https://doi.org/10.30684/etj.27.10.15

Abstract
  This paper presents the study and analysis of the parameters of aircraft electricalstarting system by using multi-method multi-step starting process. The most importantparameters of ...  Read More ...
Modeling and Implementation of Space Vector PWM Driver of 3-Phase Induction Motor
Modeling and Implementation of Space Vector PWM Driver of 3-Phase Induction Motor

Fadhil Abbas Hassan; Majid K. Al-Khatat

Volume 27, Issue 10 , July 2009, Page 2113-2131

https://doi.org/10.30684/etj.27.10.16

Abstract
  This research proposes the design, simulation, and implementation of a three-phase induction motor driver, using voltage-fed Space Vector Pulse Width Modulation technique (SVPWM), which ...  Read More ...
A Simplified Method For Estimating The Peak Load In The Large Cold Stores
A Simplified Method For Estimating The Peak Load In The Large Cold Stores

Aziz. J. Aziz; Obaid T. Fadhil; Ahmed A. M. Saleh

Volume 27, Issue 10 , July 2009, Page 2132-2141

https://doi.org/10.30684/etj.27.10.17

Abstract
  In this paper a simplified method for estimating the peak load in the large coldstores is found and its occurrence day by utilizing two new variables A & B. Thefirst variable represents ...  Read More ...
Scale Effects on the Hydrodynamics of Bubble Column
Scale Effects on the Hydrodynamics of Bubble Column

Farah S. Jameel; Mohammad F. Abid

Volume 27, Issue 10 , July 2009, Page 2142-2164

https://doi.org/10.30684/etj.27.10.18

Abstract
  The main object of this study is to investigate the influence of the columngeometric and operating variables ( i.e., column diameter, superficial gas velocityand liquid viscosity) on ...  Read More ...