Study The Reasons for The Increase in The Proportion of Damage in The Dry Clay and The Phenomenon of Effloresce for Pottery Brick
Study The Reasons for The Increase in The Proportion of Damage in The Dry Clay and The Phenomenon of Effloresce for Pottery Brick

Hind Basil. Ali

Volume 27, Issue 12 , September 2009, Page 423-437

https://doi.org/10.30684/etj.27.12.19

Abstract
  Given the emergence of cracks in a high proportion of clay product in the production phase of the plant Blocks in the laboratory Abu- Nuass which was reflected in the increase of damage ...  Read More ...
Study of Design and Implementation Factors That Leads to the Increase of Project Cost Risks During Construction Stage
Study of Design and Implementation Factors That Leads to the Increase of Project Cost Risks During Construction Stage

Suad Nasser. Akab

Volume 27, Issue 12 , September 2009, Page 438-452

https://doi.org/10.30684/etj.27.12.20

Abstract
  The study of design and implementation factors that leads to the increase of the cost risks during the construction phase is considered as one of the basic rules for the successful ...  Read More ...
Studies on Gas Hold-Up , Mass Transfer Coefficient,Mixing Time And Circulation Time In Bubble ColumnsWith Draught Tube For Pseudo Plastic (Carboxymethyl) Cellulose And Glycerol Solutions
Studies on Gas Hold-Up , Mass Transfer Coefficient,Mixing Time And Circulation Time In Bubble ColumnsWith Draught Tube For Pseudo Plastic (Carboxymethyl) Cellulose And Glycerol Solutions

Ali Abdul.R.N.Jasim

Volume 27, Issue 12 , September 2009, Page 2245-2256

https://doi.org/10.30684/etj.27.12.1

Abstract
  Bubble column reactors are widely used in chemical process industries forcarrying out gas-liquid and gas-liquid-solid reactions such as absorption, biochemicalprocess and coal liquefaction. ...  Read More ...
Combined Effect ofWheel and Thermal Load Conditions on Stress Distribution in Flexible Pavement
Combined Effect ofWheel and Thermal Load Conditions on Stress Distribution in Flexible Pavement

Zainab Ahmed Alkaiss; Suham E. Saleh Al-maliky

Volume 27, Issue 12 , September 2009, Page 2257-2267

https://doi.org/10.30684/etj.27.12.2

Abstract
  The aim of this research is to study the behavior of flexible pavement underwheel and thermal loading conditions using the finite element program ANSYS V(5.4). The stress states distribution ...  Read More ...
Application of a Finite Element Package for Modeling Rotating Machinery Vibrations
Application of a Finite Element Package for Modeling Rotating Machinery Vibrations

Farouk O. Hamdoon

Volume 27, Issue 12 , September 2009, Page 2268-2276

https://doi.org/10.30684/etj.27.12.3

Abstract
  ANSYS has no module to analyze dynamics of rotor-bearing systems,especially to calculate critical speeds. But it has element types, such as beam elementand matrix27 element, which can ...  Read More ...
Analysis Up To Failure Of Straight And Horizontally Curved Composite Precast Beam And Cast-In-Place Slab With Partial Interaction
Analysis Up To Failure Of Straight And Horizontally Curved Composite Precast Beam And Cast-In-Place Slab With Partial Interaction

Husain M. Husain; Mohammed J. Hamood; Alaa Adnan Hafez

Volume 27, Issue 12 , September 2009, Page 2277-2289

https://doi.org/10.30684/etj.27.12.4

Abstract
  In this study, a nonlinear three-dimensional finite element analysis has beenused to predict the load-deflection behavior of horizontally curved compositebeams of concrete slab and ...  Read More ...
Hydrodynamic Characteristics of a Gas- Liquid –Solid Fluidized Bed Containing a Binary Mixture of Particles
Hydrodynamic Characteristics of a Gas- Liquid –Solid Fluidized Bed Containing a Binary Mixture of Particles

Amer A. Abdul Rahman; Mohammed F. Abed; Adiba A .Mahmod

Volume 27, Issue 12 , September 2009, Page 2290-2307

https://doi.org/10.30684/etj.27.12.5

Abstract
  The present work is an experimental study on the effect of solid loading andsolid properties of both single and binary mixtures on the hydrodynamic parameters(gas holdup and bubble ...  Read More ...
Effects of New Additives (Lanolin) on the Electro-Deposition of Copper Powder
Effects of New Additives (Lanolin) on the Electro-Deposition of Copper Powder

Sami I. Jafar

Volume 27, Issue 12 , September 2009, Page 2308-2321

https://doi.org/10.30684/etj.27.12.6

Abstract
  New organic compound (Lanolin) is added to the electrolyte of copperpowder deposition unit. The influences of the copper concentration, currentdensity, and specific surface on the apparent ...  Read More ...
Development and Strength Properties of PP/PA6/RED Kaoline and PP/PA6/ Bentonite Blends
Development and Strength Properties of PP/PA6/RED Kaoline and PP/PA6/ Bentonite Blends

Najat J. Saleh

Volume 27, Issue 12 , September 2009, Page 2322-2335

https://doi.org/10.30684/etj.27.12.7

Abstract
  In the present work a new type of composite material has been prepared from mixing of polypropylene and polyamide 6 at constant ratio (80/20)] and adding different weight percent (0, ...  Read More ...
Removal of Lead and Copper Ions onto Granular Activated Carbon in Batch and Fixed Bed A Dsorber
Removal of Lead and Copper Ions onto Granular Activated Carbon in Batch and Fixed Bed A Dsorber

Abbass H. Sulaymon; Balasim A. Abid; Jenan A. Al Najar

Volume 27, Issue 12 , September 2009, Page 2336-2351

https://doi.org/10.30684/etj.27.12.8

Abstract
  The adsorption of lead and copper ions onto granular activated carbon (DARCO20-40 mesh) in a single component system has been studied using fixed bed adsorbers.A film-pore diffusion ...  Read More ...
Modeling of Shear Strength in Rectangular Reinforced Concrete Beams
Modeling of Shear Strength in Rectangular Reinforced Concrete Beams

Hussein A. Azeez

Volume 27, Issue 12 , September 2009, Page 2352-2366

https://doi.org/10.30684/etj.27.12.9

Abstract
  In this paper a model for the shear capacity of rectangular reinforced concrete beams is proposed. This modeling depends on statistical analysis for 101 experimental results from literatures, ...  Read More ...
Optimization of Cyclic Oxidation Parameters in Steel-T21 for Aluminization Coating Using Taguchi-ANOVA analysis by MINITAB13
Optimization of Cyclic Oxidation Parameters in Steel-T21 for Aluminization Coating Using Taguchi-ANOVA analysis by MINITAB13

Abbas Khammas Hussein

Volume 27, Issue 12 , September 2009, Page 2367-2384

https://doi.org/10.30684/etj.27.12.10

Abstract
  The increasing demands for high quality coatings has made it inevitable thatthe surface coating industry would put more effort into precisely controlling thecoating process relative ...  Read More ...
Ethanol Bioproduction in Three-Phase Fluidized Bioreactors
Ethanol Bioproduction in Three-Phase Fluidized Bioreactors

Haiyam Mohammed A. Al-Raheem

Volume 27, Issue 12 , September 2009, Page 2385-2397

https://doi.org/10.30684/etj.27.12.11

Abstract
  In the last decade bioalcohol has become more and more important as an alternativeenergy source and chemical feed stock. Bioethanol production has been proposed as agasoline enhancer ...  Read More ...
Retrofit of Shear Critical R.C. Beams with Carbon Fiber Reinforced Polymers (CFRP)
Retrofit of Shear Critical R.C. Beams with Carbon Fiber Reinforced Polymers (CFRP)

Kaiss F. Sarsam; Amer F. Izzet

Volume 27, Issue 12 , September 2009, Page 2398-2410

https://doi.org/10.30684/etj.27.12.12

Abstract
  This paper presents results of an experimental investigation involving eight tests on 1800mm long reinforced concrete (RC) beams strengthened in shear with externally bolted carbon ...  Read More ...
Evaluation Study of Alexander And Abramowicz Absorption Energy Models Using Thin Metallic Tubes
Evaluation Study of Alexander And Abramowicz Absorption Energy Models Using Thin Metallic Tubes

H. J. Mohamd Al-alkawi; Wisam A. bdul-latif; Ayad Aied Mahuof

Volume 27, Issue 12 , September 2009, Page 2411-2424

https://doi.org/10.30684/etj.27.12.13

Abstract
  To estimate the models of Alexander and Abramwicz Aluminum alloy AISI5052 tubes specimens are used under impact loading and room temperature. Twotypes of specimens are used the circular ...  Read More ...
Optimization of Asphalt Mix Improved by the Addition of Scrap Tires
Optimization of Asphalt Mix Improved by the Addition of Scrap Tires

Falak O. Abass; Mohammed O. Abass; Raghad O. Abass

Volume 27, Issue 12 , September 2009, Page 2425-2446

https://doi.org/10.30684/etj.27.12.14

Abstract
  The design of improved asphalt mix is achieved by the use of three majorvariables , weight of scrap tires replaced by coarse base aggregate , particles size of scrap tires finally the ...  Read More ...
A Proposed Algorithm for Reactive Power & Voltage Coordination in Distribution Systems Using Fuzzy Technique
A Proposed Algorithm for Reactive Power & Voltage Coordination in Distribution Systems Using Fuzzy Technique

Afaneen Anwar Al-Khazragy; Aws Habib Mohammed

Volume 27, Issue 12 , September 2009, Page 2447-2464

https://doi.org/10.30684/etj.27.12.15

Abstract
  This method finds the Under Load Tap Changer (ULTC) position andcapacitor ON/OFF status of each hour for the next day in main or secondarydistribution substations, so the secondary ...  Read More ...
Design and Implementation of Free Space Simplex Video – Laser Communication system
Design and Implementation of Free Space Simplex Video – Laser Communication system

Hyder Abdul; Ridha Salih; Labeab O. A. Ghani

Volume 27, Issue 12 , September 2009, Page 2465-2478

https://doi.org/10.30684/etj.27.12.16

Abstract
  The optical communication system consists of a transmitter uses a laser beam ofa wavelength 650 nm as a carrier in free space, and a receiver uses PIN diode as adetector . In both sides ...  Read More ...
Preparation Of Al-12si Foam Using Liquid Technique
Preparation Of Al-12si Foam Using Liquid Technique

Nawal E. Abdullatef; Adel Mohammad Jaber

Volume 27, Issue 12 , September 2009, Page 2479-2493

https://doi.org/10.30684/etj.27.12.17

Abstract
  This research aims at foaming an Al-12Si alloy by using CaCO3 powderas a foaming agent added to the agitated melt in different weight percents.The foaming process was carried out at ...  Read More ...
Represent Different Types of Sliding Mode Controllers by VHDL
Represent Different Types of Sliding Mode Controllers by VHDL

Yousra Abd Mohammed; Ekhlas H. Karam; Mohammed H. Khudair

Volume 27, Issue 12 , September 2009, Page 2494-2516

https://doi.org/10.30684/etj.27.12.18

Abstract
  This paper focus on represent and implementation the conventional sliding mode control (SMC), in addition to some types of the common enhancement SMC approaches using reconfigurable ...  Read More ...