The Mechanical Properties of Aluminum Matrix Composites
The Mechanical Properties of Aluminum Matrix Composites

Mohammed Saeed. Waheed; Sadir Muwafaq. Majeed

Volume 27, Issue 15 , November 2009, Page 517-523

https://doi.org/10.30684/etj.27.15.16

Abstract
  This work is production of aluminum matrix composite by powder metallurgy method .The samples have done when aluminum powder was used as a matrix in purity of (9.99%) and silicon carbide(α-SiC) ...  Read More ...
Study the Effect of Ultra Violet Rays (UV) on Some Mechanical Properties of Epoxy Composites
Study the Effect of Ultra Violet Rays (UV) on Some Mechanical Properties of Epoxy Composites

Belqis Mohammed Dhiaa; Hassan Shaker. Majdy; Raghad Hussein. Mohammed

Volume 27, Issue 15 , November 2009, Page 524-538

https://doi.org/10.30684/etj.27.15.17

Abstract
  Epoxy resin type (Ep-10) was used as a matrix for composite materials,with Glass fibers, aluminum powder and silica powder as reinforcement with volume fraction (Vf= 30%). Four types ...  Read More ...
Survey of Ground and Surface Water Quality in AL-Khadimiya Town
Survey of Ground and Surface Water Quality in AL-Khadimiya Town

Ghaida Rashid. Al-Kandi

Volume 27, Issue 15 , November 2009, Page 539-556

https://doi.org/10.30684/etj.27.15.18

Abstract
  According to the lack of water in AL-Khadimiya town due to the sabotagejustify happened in the infrastructure of town like water distribution system of potable water as a result the ...  Read More ...
The Properties of Produced Concrete by Using Fine Aggregate with Sulphate Content Higher Than Iraqi Specification Limits
The Properties of Produced Concrete by Using Fine Aggregate with Sulphate Content Higher Than Iraqi Specification Limits

Israa Younis. Jihad

Volume 27, Issue 15 , November 2009, Page 557-569

https://doi.org/10.30684/etj.27.15.19

Abstract
  The sulphate problem in fine aggregate increases with time in Iraq and the construction companies became face a lot of difficulties to find fine aggregate within the specification with ...  Read More ...
Effect Chlorophyll Pigment on Specific Gravity And Tensile Properties For Natural Rubber And Protect It From UV Ray
Effect Chlorophyll Pigment on Specific Gravity And Tensile Properties For Natural Rubber And Protect It From UV Ray

Mohammed Hamza Al_Mamouri; Kazem Fantail. Al-Sultani; Masar Najam. Obaid

Volume 27, Issue 15 , November 2009, Page 570-577

https://doi.org/10.30684/etj.27.15.20

Abstract
  The aim of this research to use extracted natural pigments which extracted plants such as chlorophyll as plasticizer and stabilizer material by simple method. The sample of rubber was ...  Read More ...
Over Voltage Transient Protection Network Design
Over Voltage Transient Protection Network Design

Miqdad T. Younis; Nidhal Y. Nasser

Volume 27, Issue 15 , November 2009, Page 2711-2718

https://doi.org/10.30684/etj.27.15.1

Abstract
  Transient over-voltage caused by lighting, switching large inductive loads,couples on to data communication or instrumentation signal lines and introduce series fault alarm conditions ...  Read More ...
Performance Analysis of Nonlinearities in WDM Systems
Performance Analysis of Nonlinearities in WDM Systems

Fikrat Abdul Kareem

Volume 27, Issue 15 , November 2009, Page 2719-2729

https://doi.org/10.30684/etj.27.15.2

Abstract
  Wavelength division multiplexing (WDM) is a technology that enables thetransmission of several optical signals simultaneously at different carrier wavelengths on a single fiber and ...  Read More ...
A Correlation Between Dynamic and Static Pile Load Test Results
A Correlation Between Dynamic and Static Pile Load Test Results

Hussein H. Hussein; Kais T. Shlash

Volume 27, Issue 15 , November 2009, Page 2730-2737

https://doi.org/10.30684/etj.27.15.3

Abstract
  Three selected bored piles executed at Basrah area were tested both bystatic and dynamic pile test procedures in order to correlate their results when evaluating the piles capacities. ...  Read More ...
On The Nonlinear Key Generator Design Using Unit-Step and Trace Functions
On The Nonlinear Key Generator Design Using Unit-Step and Trace Functions

Raghad Kadhim Salih

Volume 27, Issue 15 , November 2009, Page 2738-2750

https://doi.org/10.30684/etj.27.15.4

Abstract
  The paper presents a proposed method with an algorithm which has beenwritten in Matlab language for designing a nonlinear key generator, which is denoted by (US-TR), using unit-step ...  Read More ...
Study Of The Chemical Durability And Hazardous Ionic Leaching Of(Soda-Lime) Glass
Study Of The Chemical Durability And Hazardous Ionic Leaching Of(Soda-Lime) Glass

Abd al khalaq F. Hammod; Sanaa A. A. Hafad; Huda A. Hussain

Volume 27, Issue 15 , November 2009, Page 2751-2759

https://doi.org/10.30684/etj.27.15.5

Abstract
  Huge amounts of glass materials being applied in medical, pharmaceuticaland chemical aqueous solutions; this requires the study of chemical stability of glass at the exposed surfaces ...  Read More ...
The Dynamic Coefficients and Elastic Deformation with Thermal Effect For Cylindrical Pivot Tilting 5-Pad Bearing
The Dynamic Coefficients and Elastic Deformation with Thermal Effect For Cylindrical Pivot Tilting 5-Pad Bearing

Muhannad Z. Khelifa

Volume 27, Issue 15 , November 2009, Page 2760-2774

https://doi.org/10.30684/etj.27.15.6

Abstract
  The paper describes the results of theoretical study of the tilting pad bearing consist of five pads each pad can be titling 0.2o about a cylindrical pivot at high speed of rotating ...  Read More ...
PI Controller for The Heating Process in The Real Time System Based on LAB VIEW 8.2 Packages
PI Controller for The Heating Process in The Real Time System Based on LAB VIEW 8.2 Packages

Ahmed Sabah Abdul Ameer Al-Araji

Volume 27, Issue 15 , November 2009, Page 2775-2791

https://doi.org/10.30684/etj.27.15.7

Abstract
  This paper experimentally investigates the control of the heating process in a water tank. A trial and error method is used to find the best system response depend on the tuning parameters ...  Read More ...
The corrosion of (Fe,Zn,Cu) Metals in 3.5%Nacl solution under Different Flow Conditions
The corrosion of (Fe,Zn,Cu) Metals in 3.5%Nacl solution under Different Flow Conditions

Jamal M. Ali; Shatha A. Sameh; Qasim M. Abbas

Volume 27, Issue 15 , November 2009, Page 2792-2805

https://doi.org/10.30684/etj.27.15.8

Abstract
  As the practical importance of protection of industrial equipments fromcorrosion the need arises to study the corrosion of different metals as Carbon steel, Zinc and Copper measured ...  Read More ...
Effect of Using Header Compression Method in TCP/IP Protocol Over HDLC in SCADA System
Effect of Using Header Compression Method in TCP/IP Protocol Over HDLC in SCADA System

Sarcot N. Abdullah; Bassim Abdulbaki Jumaa; Omar A. Mohamad

Volume 27, Issue 15 , November 2009, Page 2806-2813

https://doi.org/10.30684/etj.27.15.9

Abstract
  Most of the header information remains constant over the life-time of the connection. For TCP connection many fields are constant and others change with small values. To initiate compression ...  Read More ...
Speed Control of Hydraulic Motor System with Swashplate DC-Controlled Pump
Speed Control of Hydraulic Motor System with Swashplate DC-Controlled Pump

Majid A. Oleiwi; Amjed J. Humaidi

Volume 27, Issue 15 , November 2009, Page 2814-2834

https://doi.org/10.30684/etj.27.15.10

Abstract
  In a previous study, speed-controlled hydraulic motor system hasemployed a DC motor for changing the swashplate angle of a variabledisplacement piston pump. However, the speed control ...  Read More ...
Thermal and Electrical Properties of Silica-Mullite-Grqphite Composite Fired at Low Temperature
Thermal and Electrical Properties of Silica-Mullite-Grqphite Composite Fired at Low Temperature

Mohsin E. Aldokheily

Volume 27, Issue 15 , November 2009, Page 2835-2843

https://doi.org/10.30684/etj.27.15.11

Abstract
  Silica - mullite powder sieved through 100 mesh, mixed with graphite atcertain proportions and placed in a steel mould, then subjected to ≈ 40Mpa .After air- drying for 24 hours ...  Read More ...
Formation and Characteristics Study of Nanostractured Solar Cell
Formation and Characteristics Study of Nanostractured Solar Cell

Yasmeen Z. Dawood; Bassam G. Rasheed; Ali H. Al-Hamdani

Volume 27, Issue 15 , November 2009, Page 2844-2852

https://doi.org/10.30684/etj.27.15.12

Abstract
  Electrochemical and photoelectrochemical etching technique have beenemployed to produce nanostructured solar cell. Various preparation conditions were examined. The I-V characteristics ...  Read More ...
Removal of Phenol Pollutants by Modification Molecular Sieves 13X
Removal of Phenol Pollutants by Modification Molecular Sieves 13X

Laith S. Sabri; Jabir Shanshool

Volume 27, Issue 15 , November 2009, Page 2853-2862

https://doi.org/10.30684/etj.27.15.13

Abstract
  Molecular sieves type 13X was modified by treatment with saturated solution of urea or thiourea and adding of sodium silicate as binder to give homogeneous admixture in approximate ...  Read More ...
Evaluation of Horizontal Flow Roughing Filtration Performance
Evaluation of Horizontal Flow Roughing Filtration Performance

Sataa A. Al-Bayati; Zainab S. Habeeb

Volume 27, Issue 15 , November 2009, Page 2863-2878

https://doi.org/10.30684/etj.27.15.14

Abstract
  The HRF was studied by using pilot plant. This pilot plant was designedand applied in Al – Wehda Water Treatment Plant which treats the raw water of Tigris River in Al – ...  Read More ...
Design, Construction and Testing A Laser Power Comparator
Design, Construction and Testing A Laser Power Comparator

Mohamed Saleh Ahmed; Haidar Ali Nasser; Jassim Kadim Hmood

Volume 27, Issue 15 , November 2009, Page 2878-2884

https://doi.org/10.30684/etj.27.15.15

Abstract
  A laser power comparator prototype that can be utilized in laboratories has been designed constructed and tested. The system consists of three main electronic circuits: the laser comparator ...  Read More ...