Treatment of Soft Soil by Sand Columns
Treatment of Soft Soil by Sand Columns

Namir K.S. Al-Saoudi; Mohammad M. M. Al-Kaissi; Nawres A. A. Rajab

Volume 32, Issue 9 , September 2014, Page 2106-2118

https://doi.org/10.30684/etj.32.9A1

Abstract
  Stone or sand columns are most widely used to improve the engineering properties of soft saturated soils. In principles, sand columns technique is very close to the well-known stone ...  Read More ...
The Mechanical and Thermal Properties of Polymer Hybrid Composite Reinforced by Rice Husk Ash at Different Conditions
The Mechanical and Thermal Properties of Polymer Hybrid Composite Reinforced by Rice Husk Ash at Different Conditions

Sihama Essa Salih; Basma Hashim; Haitham Mahmood Al-tamimi

Volume 32, Issue 9 , September 2014, Page 2119-2133

https://doi.org/10.30684/etj.32.9A2

Abstract
  This research was carried out to study the effect of natural and calcined temperature of rice husk ash with selected temperature (900,1100,1300oC) on the mechanical and thermal properties ...  Read More ...
Life-Cycle Cost Analysis for Three Different Types of A/C Systems Applied on an Apartment Located in a Multi-Floors Residential Tower in Mosul City
Life-Cycle Cost Analysis for Three Different Types of A/C Systems Applied on an Apartment Located in a Multi-Floors Residential Tower in Mosul City

Badran Mohammed Salim

Volume 32, Issue 9 , September 2014, Page 2134-1147

https://doi.org/10.30684/etj.32.9A3

Abstract
  This research studies the life cycle cost analysis using detailed cooling and electrical load profiles to calculate initial and running costs to evaluate the economic feasibilities ...  Read More ...
Experimental and Finite Element Analysis on Rounded Corners Square Shape Tube Hydroforming Process
Experimental and Finite Element Analysis on Rounded Corners Square Shape Tube Hydroforming Process

Hani Aziz Ameen; Nahedh Mahmood Ali

Volume 32, Issue 9 , September 2014, Page 2148-2164

https://doi.org/10.30684/etj.32.9A4

Abstract
  Tube hydroforming is a forming process where an inner pressure combined with axial feeding deforms the tube to the shape of a die cavity, i.e. the process state where the hardening ...  Read More ...
Gain Characteristics for C-Band Erbium Doped Fiber Amplifier Utilizing Single and Double-Pass Configurations: A Comparative Study
Gain Characteristics for C-Band Erbium Doped Fiber Amplifier Utilizing Single and Double-Pass Configurations: A Comparative Study

Abdulla. K. Abass; Mohammed J. Abdul-Razak; Mohammed A. Salih

Volume 32, Issue 9 , September 2014, Page 2165-2173

https://doi.org/10.30684/etj.32.9A5

Abstract
  An erbium doped fiber amplifier in the conventional communication window utilizing single and double pump pass configurations were demonstrated and compared using OptiSystem 12 software. ...  Read More ...
Evaluation the Hydraulic Aspects of Stepped Labyrinth Spillway
Evaluation the Hydraulic Aspects of Stepped Labyrinth Spillway

Jaafar Sadeq Maatooq; Taha Yaseen Ojaimi

Volume 32, Issue 9 , September 2014, Page 2174-2185

https://doi.org/10.30684/etj.32.9A6

Abstract
  This study was adopted a new concept to enhance performance of stepped spillway towards more dissipation of kinetic energy along chute face through increases interlocking surface areas ...  Read More ...
Investigation into Deformation Monitoring of Mosul Dam
Investigation into Deformation Monitoring of Mosul Dam

Rasheed Saleem Abed

Volume 32, Issue 9 , September 2014, Page 2186-2195

https://doi.org/10.30684/etj.32.9A7

Abstract
  It is crucial to monitor the deformation of dams for saving lives and properties, economy and the environment. Many critical observables have to be studied on the dam and the near vicinity. ...  Read More ...
Kinematics Analysis of 5250 Lab-Volt 5-DOF Robot Arm
Kinematics Analysis of 5250 Lab-Volt 5-DOF Robot Arm

Wathik Isaa Mahdi AL-Tameemi; Wael Mohammed Hasan Hadi

Volume 32, Issue 9 , September 2014, Page 2196-2204

https://doi.org/10.30684/etj.32.9A8

Abstract
  This paper presents for the first time a complete kinematic analysis of 5250 Lab-Volt 5-Dof robot which include both forward kinematics and inverse kinematics for this robot arm. The ...  Read More ...
Effect of Quenching Media on the Mechanical Properties and Abrasive Wear Resistance of (34Cr4) Steel Blade with Soil Texture Used in Agricultural Equipments
Effect of Quenching Media on the Mechanical Properties and Abrasive Wear Resistance of (34Cr4) Steel Blade with Soil Texture Used in Agricultural Equipments

Abbas S. Alwan

Volume 32, Issue 9 , September 2014, Page 2205-2215

https://doi.org/10.30684/etj.32.9A9

Abstract
  In this paper, a study the effect of quenching media on the mechanical properties and abrasive wear has been done on steel blade (34Cr4) for agriculture equipment with soil texture. ...  Read More ...
The Influence of Injection Timing on Combustion and Emission Characteristics of HSDI Diesel Engine
The Influence of Injection Timing on Combustion and Emission Characteristics of HSDI Diesel Engine

Hayder A. Dhahad; Mohammed A. Abdulhadi; Ekhlas M. Alfayydh; T. Megaritis

Volume 32, Issue 9 , September 2014, Page 2216-2234

https://doi.org/10.30684/etj.32.9A10

Abstract
  An attempt has been made to study the combustion and emission characteristics of ultra-low diesel fuel for high speed direct injection ( HSDI) diesel engine at different fuel injection ...  Read More ...
Numerically and Experimentally Studying of some Mechanical Properties of the Polyester Matrix Composite Material Reinforced by Jute Fibers
Numerically and Experimentally Studying of some Mechanical Properties of the Polyester Matrix Composite Material Reinforced by Jute Fibers

Jawad Kadhim Oleiwi; Mohamad K. Alwan; Qahtan Adnan Hamad

Volume 32, Issue 9 , September 2014, Page 2235-2247

https://doi.org/10.30684/etj.32.9A11

Abstract
  This research focuses on the preparation of polymer matrix composite material by (hand lay – up) method, where the material (rectangular beam) was prepared from unsaturated polyester ...  Read More ...
Analysis of the Capacity, Spectral Efficiency and Probability of Outage of Adaptive Mobile Channel for WiMAX System
Analysis of the Capacity, Spectral Efficiency and Probability of Outage of Adaptive Mobile Channel for WiMAX System

Hadi T. Ziboon; Wasan S. Rasheed

Volume 32, Issue 9 , September 2014, Page 2248-2267

https://doi.org/10.30684/etj.32.9A12

Abstract
  This paper presents an analysis of the channel capacity, spectral efficiency and probability of outage for the 4th generation adaptive modulation ofWiMAX system. The adaptive modulation ...  Read More ...
Characterizations of Semi-Silica Refractory Bricks Produced from Local Iraqi Materials
Characterizations of Semi-Silica Refractory Bricks Produced from Local Iraqi Materials

Mohammed H. Al-Taie; Alaa H. Ali; Abeer F. Al-Attar

Volume 32, Issue 9 , September 2014, Page 2268-2276

https://doi.org/10.30684/etj.32.9A13

Abstract
  This research was carried out to investigate the suitability of locally white sand and Dwaikhla clay (Kaolin) for manufacture of semi-silica refractory bricks as thermal insulators ...  Read More ...
Estimating Reference Evapo- transpiration in Mosul (Iraq) Using Cascade Neural Networks
Estimating Reference Evapo- transpiration in Mosul (Iraq) Using Cascade Neural Networks

Fatin Mahmoud Shehab; Raid Rafi Omar; Radhwan Yousif Sedik

Volume 32, Issue 9 , September 2014, Page 2277-2285

https://doi.org/10.30684/etj.32.9A14

Abstract
  Recently artificial neural network (ANN) has been applied for estimating reference evapo-transpiration (ETₒ).In this study a mathematical model was built by application the cascade ...  Read More ...
Fabrication, Characterization and Modeling of Al2o3/Ni Functionally Graded Materials
Fabrication, Characterization and Modeling of Al2o3/Ni Functionally Graded Materials

Alaa Abdulhasan Atiyah

Volume 32, Issue 9 , September 2014, Page 2286-2302

https://doi.org/10.30684/etj.32.9A15

Abstract
  Functionally graded materials (FGMs), with ceramic and metallic constituents, are frequently used for tremendous high temperature applications. In this paper, six sets of FGMs samples ...  Read More ...
Fabrication and Characterization of ZnO Gas Sensor
Fabrication and Characterization of ZnO Gas Sensor

Alaa A. Abdul-Hamead; Farhad M. Osman; Alaa S. Taeeh

Volume 32, Issue 9 , September 2014, Page 2303-2312

https://doi.org/10.30684/etj.32.9A16

Abstract
  In this paper thin films of zinc oxide ZnO was prepared by spray pyrolyess method with thickness were about ( 0.1 ±0.05 µm) on n-type silicon substrates at different deposition ...  Read More ...
Influence of Power Density and Exposure Time on Laser Drilling Hole
Influence of Power Density and Exposure Time on Laser Drilling Hole

Saad Kariem Shather; Mohammed Sattar Jabbar

Volume 32, Issue 9 , September 2014, Page 2313-2321

https://doi.org/10.30684/etj.32.9A17

Abstract
  laser drilling play an important role in special applications with high accuracy dimensions, this paper was focused on two types of ceramics; aluminum oxide (Al2O3) and zinc oxide (ZnO) ...  Read More ...
Design of Circular Printed Slot Antenna for Multiband Wireless Communication Applications
Design of Circular Printed Slot Antenna for Multiband Wireless Communication Applications

Mehde M. Al-Shimmary

Volume 32, Issue 9 , September 2014, Page 2322-2330

https://doi.org/10.30684/etj.32.9A18

Abstract
  In this paper, a printed antenna with circular slot is presented as a candidate for use in multiband wireless communication applications. The slot structure of the proposed antenna ...  Read More ...
The Effect of the Addition of Natural Rubber to (U-PTE) Resin on some Mechanical Properties
The Effect of the Addition of Natural Rubber to (U-PTE) Resin on some Mechanical Properties

Wafaa Mahdi Salih

Volume 32, Issue 9 , September 2014, Page 304-310

https://doi.org/10.30684/etj.32.9A19

Abstract
  In this research polymer was prepared from Alkyd resin (U-PTE) with ratio 100% the and natural rubber with ratio 30%. The mixing process was performed by hand lay-up method. Some mechanical ...  Read More ...
Using of Statistical Methods to Determine The Defects Cost Affected on The Product Data and Forecast Losses for Decision-Making
Using of Statistical Methods to Determine The Defects Cost Affected on The Product Data and Forecast Losses for Decision-Making

Ahmad A.Alkafaji; Salman H.Omran; Ismeal H.Ehallob

Volume 32, Issue 9 , September 2014, Page 311-323

https://doi.org/10.30684/etj.32.9A20

Abstract
  The research deals with methodology proposed for a final product data fully inspected for decision-making on improvement or continuing production by using some methods of forecasting ...  Read More ...