Digital Geotechnical Maps of Basrah City Using Geographical Information Systems Technique
Digital Geotechnical Maps of Basrah City Using Geographical Information Systems Technique

Mohanad M. Kadhim; Namir K. S. Al-Saoudi; Abdul Razzak T. Ziboon

Volume 31, 4A , April 2013, Page 599-617

https://doi.org/10.30684/etj.31.4A.1

Abstract
  The work in this research presents the use of Geographical Information Systems (GIS) and Global Positioning Systems (GPS) which integrated with remote sensing (RS) techniques in geotechnical ...  Read More ...
Numerical Modeling of Pore Water Pressure Development in Mosul Dam
Numerical Modeling of Pore Water Pressure Development in Mosul Dam

Suhail A. A. Khattab; Amina A. Khalil

Volume 31, 4A , April 2013, Page 618-631

https://doi.org/10.30684/etj.31.4A.2

Abstract
  A finite element method is useful tools to be applicable in many geotechnical engineering topics. In this paper the pore water pressure development within the clay core of MOSUL earth ...  Read More ...
Neural NetworkModeling of Oxidation Kinetics in Air of Steel-T21 Alloy Coated by Simultaneous Germanium-Doped Aluminizing-Silicon zing Process
Neural NetworkModeling of Oxidation Kinetics in Air of Steel-T21 Alloy Coated by Simultaneous Germanium-Doped Aluminizing-Silicon zing Process

Abbas Khammas; Mohanned M. H.AL-Khafaji

Volume 31, 4A , April 2013, Page 632-645

https://doi.org/10.30684/etj.31.4A.3

Abstract
  In this work a pack cementation of germanium-doped aluminum and silicon coatings on low alloy steel type-T21 has been applied. This gives significant improvement in the oxidation. Steel-T21 ...  Read More ...
A Heat Pipe Performance With Heptane as aWorking Fluid
A Heat Pipe Performance With Heptane as aWorking Fluid

Hussain H.Ahmad; Raqeeb H. Rajab

Volume 31, 4A , April 2013, Page 646-660

https://doi.org/10.30684/etj.31.4A.4

Abstract
  The heat pipe is a device that efficiently transfers heat from one end to another. It has been widely applied in electronic system cooling and heat spreading applications due to its ...  Read More ...
Improving the Compatibility between Polymer-, Pozzolanic Cement-Based Repairing Materials and Concrete Substrate
Improving the Compatibility between Polymer-, Pozzolanic Cement-Based Repairing Materials and Concrete Substrate

Qais J. Frayyeh; Maan S. Hassan; Tahseen D. Saadoon

Volume 31, 4A , April 2013, Page 661-676

https://doi.org/10.30684/etj.31.4A.5

Abstract
  In this study, the compatibility of five different cement based repair materials and substrate concrete was investigated in three stages. First stage includes studying the individual ...  Read More ...
Performance of Direct Sequence Spread Spectrum System (DSSSS) in Presence of Single and Multi Tone Jamming
Performance of Direct Sequence Spread Spectrum System (DSSSS) in Presence of Single and Multi Tone Jamming

Sadiq Kamel Gharkan; Ali Abdul-Elah Noori; Saleem Latteef Mohammed

Volume 31, 4A , April 2013, Page 677-691

https://doi.org/10.30684/etj.31.4A.6

Abstract
  There are various impairments or problems on direct sequence spread spectrum communication channel especially jamming problems, in order to focus on this problem a direct sequence spread ...  Read More ...
Accuracy Assessment of Lidar Data Using Geomatic Approaches
Accuracy Assessment of Lidar Data Using Geomatic Approaches

Abbas Z. Khalfa; Imzahim Abdul Kareem Alwan; Adnan R. Mechman

Volume 31, 4A , April 2013, Page 692-702

https://doi.org/10.30684/etj.31.4A.7

Abstract
  The fast development in Remote Sensing technology with various sources of data especially LiDAR (Light Detection And Ranging) images promote the ability of using data , but the accuracy ...  Read More ...
Implementation of Finite Element Method for Prediction of Soil Liquefaction Around Undergroud Structure
Implementation of Finite Element Method for Prediction of Soil Liquefaction Around Undergroud Structure

Mohammed Y. Fatah; Mohammed A. Al-Neami; Nora Hameed Jajjawi

Volume 31, 4A , April 2013, Page 703-714

https://doi.org/10.30684/etj.31.4A.8

Abstract
  Liquefaction is the rapid loss of shear strength in cohesionless soils subjected to dynamic loading, that it is a state of saturated cohesionless soil when its entire shear strength ...  Read More ...
Catalysts Regeneration Using Laser Technique in Petroleum Industry
Catalysts Regeneration Using Laser Technique in Petroleum Industry

Adawiya J. Haider; Khalid A. Sukkar; Duha S. Ahmed

Volume 31, 4A , April 2013, Page 715-722

https://doi.org/10.30684/etj.31.4A.9

Abstract
  The catalyst cost regards one of the most important obstacles in petroleum industry. Therefore, the regeneration of catalysts could be more economic process to get high performance ...  Read More ...
Methodology for Calculating Life Expectancy of Existing Concrete Structures
Methodology for Calculating Life Expectancy of Existing Concrete Structures

Faisal M. H. Sabouni

Volume 31, 4A , April 2013, Page 723-729

https://doi.org/10.30684/etj.31.4A.10

Abstract
  A study was conducted on four reinforced concrete buildings built in the desert region in one of the Arabian Gulf states in the late seventies to mid eighties to assess the remaining ...  Read More ...
Evaluation of Critical Stress Intensity Factor (Kic) for Plates Using New Crack Extension Technique
Evaluation of Critical Stress Intensity Factor (Kic) for Plates Using New Crack Extension Technique

Ameen Ahmed Nassar

Volume 31, 4A , April 2013, Page 730-740

https://doi.org/10.30684/etj.31.4A.11

Abstract
  The technique of crack extension is applied to the computation of critical stress intensity factor in linear elastic fracture mechanics for cracked plates in tension for different crack ...  Read More ...
Using Propylene–Ethylene Grid to Improve the Production of Precast Concret Slabs
Using Propylene–Ethylene Grid to Improve the Production of Precast Concret Slabs

Zainab Abdulrdha Thweny

Volume 31, 4A , April 2013, Page 741-751

https://doi.org/10.30684/etj.31.4A.12

Abstract
  The precast concrete roofing slab produced from the local factory were below the Iraqi standard requirement (NO 1107-1988).This study has been made to improve the production of precast ...  Read More ...
Statistical Distributions ofWind Speed for Baghdad, Basra and Mosul Governorates
Statistical Distributions ofWind Speed for Baghdad, Basra and Mosul Governorates

Azhar Hadi Mahdi

Volume 31, 4A , April 2013, Page 752-773

https://doi.org/10.30684/etj.31.4A.13

Abstract
  The goal of this research is to calculate two basic parameters in Gumbel distribution which is known as prevailing model for quantifying risk associated with extreme wind speed, earthquakes ...  Read More ...
Intersection Analysis by aaSIDRA Software for Computer Simulation to Optimize the Traffic Flow
Intersection Analysis by aaSIDRA Software for Computer Simulation to Optimize the Traffic Flow

Ali Ahmed Mohammed

Volume 31, 4A , April 2013, Page 774-792

https://doi.org/10.30684/etj.31.4A.14

Abstract
  Computer simulation is important for the analysis of freeways and urban streets systems. Through simulation, Transportation specialists can study the formation and dissipation of congestion ...  Read More ...
Comprehensive Electrochemical Evaluation of Protective Coatings Properties by Sol-Gel Route for Stainless Steel Corrosion
Comprehensive Electrochemical Evaluation of Protective Coatings Properties by Sol-Gel Route for Stainless Steel Corrosion

Mohammed Hussein J. Al Atia

Volume 31, 4A , April 2013, Page 71-86

https://doi.org/10.30684/etj.31.4A.15

Abstract
  Sol gel nano ceramic coatings have been applied on stainless steel to develop their biological characteristics and increase resistance to corrosion and wear. In this work nine electrochemical ...  Read More ...