The Architectural Development in Baghdad's house's elevations
The Architectural Development in Baghdad's house's elevations"an analytical study in Baghdad's house's elevations at twentieth century

Shaima Abbas. Ali

Volume 27, Issue 7 , May 2009, Page 234-249

https://doi.org/10.30684/etj.27.7.18

Abstract
  The Architecture is a cultural monumental . It has its action's and reactions and its position and historical distance . The house , as it concern , one of the Architectural Phenomenon ...  Read More ...
Using Al2O3-Mgo-PSZ ceramic system in cutting tools manufacturing
Using Al2O3-Mgo-PSZ ceramic system in cutting tools manufacturing

Jinan Sattar Khashan; Haitham Razouki. Salih

Volume 27, Issue 7 , May 2009, Page 250-257

https://doi.org/10.30684/etj.27.7.19

Abstract
  Recent advance in high-speed cutting materials have focused on reinforcingalumina with different carbides and nitrides in order to improve hardness and fracturetoughness, this composites ...  Read More ...
Effect of Pb and Sn Adding on Dry Sliding Wear Behavior of á-Brass (70/30)
Effect of Pb and Sn Adding on Dry Sliding Wear Behavior of á-Brass (70/30)

Muna Khudair. Abbas; Makarem Hazem Abdul-Karim; Thikra Mahdi. Ali

Volume 27, Issue 7 , May 2009, Page 258-268

https://doi.org/10.30684/etj.27.7.20

Abstract
  This work is concerned with a study of dry sliding wear of α–Brass (70/30) withaddition of lead and tin(3%wt) for each one alloy. Three brass alloys were prepared bymelting ...  Read More ...
Design and Simulation of Microwave Oscillator
Design and Simulation of Microwave Oscillator

Ahmed H. Reja; Murooj N. MohammadAli; Rajaa K. Jaber

Volume 27, Issue 7 , May 2009, Page 1234-1246

https://doi.org/10.30684/etj.27.7.1

Abstract
  This paper is concerned with the design and simulation of fixed frequency microwaveoscillator. Scattering parameters of the active device (MESFET-Afm02n8b) are used todesign and synthesize ...  Read More ...
Evaluation of Elastic Deflections and Bending Moments for Orthotropically Reinforced Concrete Rectangular slabs Supported on Three Edges Only
Evaluation of Elastic Deflections and Bending Moments for Orthotropically Reinforced Concrete Rectangular slabs Supported on Three Edges Only

Hisham M. AL-Hassani; Husain M. Husain; Asmaa Ali Ahmad

Volume 27, Issue 7 , May 2009, Page 1247-1259

https://doi.org/10.30684/etj.27.7.2

Abstract
  This paper deals with the evaluation of the elastic deflections and bending momentsfor orthotropically reinforced concrete rectangular slabs supported on three variouslyrestrained edges ...  Read More ...
Design and Implementation of a High Resolution Two Counter Digital Pulse Width Modulation
Design and Implementation of a High Resolution Two Counter Digital Pulse Width Modulation

Jassim K. Hmood

Volume 27, Issue 7 , May 2009, Page 1260-1269

https://doi.org/10.30684/etj.27.7.3

Abstract
  This paper presents a high resolution Digital Pulse Width Modulation "DPWM" for thevoltage regulator application. The PWM signal is generated by using two fast clockcounters. In this ...  Read More ...
On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder
On The Effect of Flow Direction on Mixed Convection Around Heated Circular Cylinder

Jalal M. Jalil; Qasim S. Mehdi; Mohammed A. Ahmed

Volume 27, Issue 7 , May 2009, Page 1270-1279

https://doi.org/10.30684/etj.27.7.4

Abstract
  A numerical investigation of laminar mixed convection around horizontal isothermalcylinder is presented. The free stream direction varies between the vertically upward(assisting flow) ...  Read More ...
Radiation Performance Evaluation of Microstrip Antenna Covered With a Dielectric Layer
Radiation Performance Evaluation of Microstrip Antenna Covered With a Dielectric Layer

Hussain A. Hammas

Volume 27, Issue 7 , May 2009, Page 1280-1286

https://doi.org/10.30684/etj.27.7.5

Abstract
  In this paper, a comprehensive investigation of a microstrip antennaperformance covered with a dielectric layer has been presented. An aperturecoupled antenna has been designed as a ...  Read More ...
Job-Shop Sequencing Real Life Problem With Setup Time
Job-Shop Sequencing Real Life Problem With Setup Time

Khallel Ibrahim Mahmoud; Israr Ahmad

Volume 27, Issue 7 , May 2009, Page 1287-1300

https://doi.org/10.30684/etj.27.7.6

Abstract
  In this paper, we analyzed the sequencing situations on two machines where the machinesetup time is not independent of processing order.A real case study of Hadhramout Industrial Company ...  Read More ...
Reaction Kinetic ofá-methylstyrene (AMS) Hydrogenation
Reaction Kinetic ofá-methylstyrene (AMS) Hydrogenation

Zaidoon M. Shakoor; Mumtaz A. Zablouk; Adel A. Shuhaib

Volume 27, Issue 7 , May 2009, Page 1301-1316

https://doi.org/10.30684/etj.27.7.7

Abstract
  In this research hydrogenation kinetic of alpha-methylstyrene (AMS) on Pd/Al2O3catalyst was studied. The reaction is mildly exothermic (ÄH=-109 kJ/mol). Intrinsickinetic law was ...  Read More ...
Electrical Properties of Ba,Ho Doped PbI2
Electrical Properties of Ba,Ho Doped PbI2

Shatha Sh. Jamil; Ali M. Mousa

Volume 27, Issue 7 , May 2009, Page 1317-1323

https://doi.org/10.30684/etj.27.7.8

Abstract
  Barium and Holmium have been introduced into polycrystalline lead iodide duringsolution growth of thin films. Electrical characterization (current vs. voltage measurements ,resistivity, ...  Read More ...
Remote ECG Signal Monitoring Via Internet
Remote ECG Signal Monitoring Via Internet

Saleh M. Al-Qaraawy; Hamid Mousa Hasan; Maher Faik Esmaile

Volume 27, Issue 7 , May 2009, Page 1324-1335

https://doi.org/10.30684/etj.27.7.9

Abstract
  In this paper the Internet was used as a media for transmission an ECG (Electro-Cardio-gram) signal from a patient directly to a remotely reside doctor or consultant whowill respond ...  Read More ...
Studies Pressure Drop of gas-Non-Newtonian Liquid Two Phase Flow in Bubble Column
Studies Pressure Drop of gas-Non-Newtonian Liquid Two Phase Flow in Bubble Column

Ali H. Jawad

Volume 27, Issue 7 , May 2009, Page 1336-1350

https://doi.org/10.30684/etj.27.7.10

Abstract
  An exclusive study has been done on experimental investigation of the two-phase flowpressure drop in an air-non-Newtonian liquid (CMC solutions) system in bubble column.The effects ...  Read More ...
Aircraft Dutch Roll and State Variables Analysis Using Yaw Damper and Washout Filter
Aircraft Dutch Roll and State Variables Analysis Using Yaw Damper and Washout Filter

Emad N. Abdulwahab

Volume 27, Issue 7 , May 2009, Page 1351-1369

https://doi.org/10.30684/etj.27.7.11

Abstract
  Many high performance aircraft suffer from a dynamic instability problem at relativelyhigh Mach number and altitude regimes known as Dutch roll instability. In this study theaircraft ...  Read More ...
A New Compact Dual Band GPS Patch Antenna Design Based on Minkowski-Like Pre-Fractal Geometry
A New Compact Dual Band GPS Patch Antenna Design Based on Minkowski-Like Pre-Fractal Geometry

Mohammed Fadhil Hasan

Volume 27, Issue 7 , May 2009, Page 1370-1375

https://doi.org/10.30684/etj.27.7.12

Abstract
  A low profile compact microstrip antenna for GPS (L1/L2) application has beenpresented in this paper. The proposed antenna design is based on the 3rd iterationMinkowski-like pre-fractal ...  Read More ...
Offline Signature Recognition and Verification Based on Artifical Neural Network
Offline Signature Recognition and Verification Based on Artifical Neural Network

Mohammed A. Abdala; Noor Ayad Yousif

Volume 27, Issue 7 , May 2009, Page 1376-1384

https://doi.org/10.30684/etj.27.7.13

Abstract
  In this paper, a problem for Offline Signature Recognition and Verification is presented. Asystem is designed based on two neural networks classifier and three powerful features (global,texture ...  Read More ...
Numerical Study of Forced Convection in Wavy and Diverged-Converged Ducts
Numerical Study of Forced Convection in Wavy and Diverged-Converged Ducts

Waheed S. Mohamad; Sattar J. Habeeb; Anmar M. Basheer

Volume 27, Issue 7 , May 2009, Page 1385-1403

https://doi.org/10.30684/etj.27.7.14

Abstract
  A three-dimensional study of developing fluid flow and heat transfer throughwavy and diverged-converged ducts were studied numerically for a Prandlt number 0.7and 5.85 and compared ...  Read More ...
Behaviour of Encased Floating Stone Columns
Behaviour of Encased Floating Stone Columns

Mohammed Y. Fattah; Qutaiba G. Majeed

Volume 27, Issue 7 , May 2009, Page 1404-1421

https://doi.org/10.30684/etj.27.7.15

Abstract
  In this paper, the finite element method is utilized as a tool for carrying out differentanalyses of stone column–soil systems under different conditions. A trial is made toimprove ...  Read More ...
A study of the Hardness and Wear Rate of Elastomer Composites Reinforced by Al2O3 and SiO2 Particles
A study of the Hardness and Wear Rate of Elastomer Composites Reinforced by Al2O3 and SiO2 Particles

Jawad K.Oleiwi; Mohammed S. Hamza; Mayyadah Sh. Abed

Volume 27, Issue 7 , May 2009, Page 1422-1434

https://doi.org/10.30684/etj.27.7.16

Abstract
  This research deals with the study the effect of adding the silica particles andalumina particles separately with different ratio (5, 10, 15, 20, and 25 pphr) on thehardness and wear ...  Read More ...
State Estimation of Two-Phase Permanent Magnet Synchronous Motor
State Estimation of Two-Phase Permanent Magnet Synchronous Motor

Amjed J. Hamidi; Ahmed Alaa Ogla; Yaser Nabeel Ibrahem

Volume 27, Issue 7 , May 2009, Page 1435-1443

https://doi.org/10.30684/etj.27.7.17

Abstract
  The goal of this paper is to estimate the states of two-phase permanent magnet synchronousmotor (PMSM). The system is highly nonlinear and one therefore cannot directly use any linearsystem ...  Read More ...