Study effect of using electric field and low pressure on laser drilling process
Study effect of using electric field and low pressure on laser drilling process

Zainab Nasir. Jamil

Volume 27, Issue 4 , March 2009, Page 144-156

https://doi.org/10.30684/etj.27.4.14

Abstract
  In this work, the effect of electric field at low pressure (10-2m bar) on laser drillingprocess has been studied for Stainless-Steel type (304) and brasses.Nd: YAG pulsed laser (1.06μm) ...  Read More ...
Material Selection Techniques by Using Computer
Material Selection Techniques by Using Computer

Mithal A. al-Bassam; Hind B. Al-Atraqgy

Volume 27, Issue 4 , March 2009, Page 624-640

https://doi.org/10.30684/etj.27.4.1

Abstract
  This research is concerned in showing the importance of material selection inproduction design stage, the factors that involved the material selection strategies andits criteria and ...  Read More ...
Automatic Tool Path Generation for Parametric Surfaces in Terms of Bezier Patches
Automatic Tool Path Generation for Parametric Surfaces in Terms of Bezier Patches

Tahseen Fadhil Abbas

Volume 27, Issue 4 , March 2009, Page 641-653

https://doi.org/10.30684/etj.27.4.2

Abstract
  The objective aim of this paper is to develop an algorithm that generate NC toolpath for parametric surfaces based on the accuracy of a desired surface. A designedsurface is represented ...  Read More ...
Second Order Dispersion In The Interferometer's Optical Elements For Quantum Cryptography (QC) System
Second Order Dispersion In The Interferometer's Optical Elements For Quantum Cryptography (QC) System

Duha S. Ahmed; Ahlam L. huraiji; Ali K. Abdul-Fattah; Adawiya J. Haider

Volume 27, Issue 4 , March 2009, Page 654-662

https://doi.org/10.30684/etj.27.4.3

Abstract
  In this study, we have studied the entangled photon source and how the coincidentcount rate and visibility could be affected by the optical elements of the system setup. Theprofile ...  Read More ...
Effect on Rapid Thermal Oxidation process on Electrical Properties of Porous Silicon
Effect on Rapid Thermal Oxidation process on Electrical Properties of Porous Silicon

Khawla S. Khashan; Amany A. Awaad; Maysaa A.Mohamed

Volume 27, Issue 4 , March 2009, Page 663-674

https://doi.org/10.30684/etj.27.4.4

Abstract
  In this work, the porous silicon was prepared by using stain etching in HF-HNO3 atdifferent etching times. Then Rapid Thermal Oxidation (RTO) processes were used forsurface treatment ...  Read More ...
An (SDARE) Based Treatment Scheduling For Enhancing Immune Response to (HIV)
An (SDARE) Based Treatment Scheduling For Enhancing Immune Response to (HIV)

Raed I. Al-Ajeel; Yasir Khudhair Abbas

Volume 27, Issue 4 , March 2009, Page 675-690

https://doi.org/10.30684/etj.27.4.5

Abstract
  In this paper, the problem of designing dynamic multidrug therapies scheduling tomedicate the Human Immunodeficiency Virus (HIV) type 1 infection is described. Thecontrol approach used ...  Read More ...
Quality Control of Cost Estimation Process in Construction Organizations
Quality Control of Cost Estimation Process in Construction Organizations

Ibtisam M. A. Al.Hamidi; Manaf A. Mohammed

Volume 27, Issue 4 , March 2009, Page 691-705

https://doi.org/10.30684/etj.27.4.6

Abstract
  Quality has been emerged in the 1980s as the top strategic issue in industry.Statistical process control (SPC) is an important element of total quality management(TQM).Though SPC techniques ...  Read More ...
A Study the Effect of UV Light on Pigmented and Unpigmented LDPE
A Study the Effect of UV Light on Pigmented and Unpigmented LDPE

Najat J.saleh; Zanaib Y.shnean

Volume 27, Issue 4 , March 2009, Page 706-716

https://doi.org/10.30684/etj.27.4.7

Abstract
  In the present work, specimens of polymeric composites were prepared from LDPEwith different wt% of TiO2 and Fe2O3 using a single screw extruder which operated at atemperature of (150-170) ...  Read More ...
Wavelet & Multiwavelet Lost Block Reconstruction in Noisey Environment
Wavelet & Multiwavelet Lost Block Reconstruction in Noisey Environment

Waleed A. Mahmoud; Mutaz S. Abdul-Wahab; Atheer A. Sabri

Volume 27, Issue 4 , March 2009, Page 717-726

https://doi.org/10.30684/etj.27.4.8

Abstract
  In this paper, an algorithm for reconstruction of a completely lost blocksusing the discrete wavelet and multiwavelet transforms are tested under noiseyenvironment.The algorithms examined ...  Read More ...
The Effect Of Thermal Oxidation Time On The Structure And Influence On Optical Properties For Porous Silicon Prepared By Photo Electrochemical Etching
The Effect Of Thermal Oxidation Time On The Structure And Influence On Optical Properties For Porous Silicon Prepared By Photo Electrochemical Etching

Alwan M.Alwan; Narges Z.Abd alzahra

Volume 27, Issue 4 , March 2009, Page 727-735

https://doi.org/10.30684/etj.27.4.9

Abstract
  The morphological properties of the freshly and oxidized porous silicon atoxidation time (60, 90) sec were studied. A blue emission from PSi can be seen witheyes after thermal oxidation ...  Read More ...
Prediction of Stall Phenomenon in Blade-to-Blade Passage of Axial Flow Compressor
Prediction of Stall Phenomenon in Blade-to-Blade Passage of Axial Flow Compressor

Arkan K. Al-Taie; Abbas Abdul-Hussein

Volume 27, Issue 4 , March 2009, Page 736-750

https://doi.org/10.30684/etj.27.4.10

Abstract
  The flow field between two blades was analyzed numerically by solving thesteady, two dimensional and incompressible (time-mass averaged Navier- Stokesequations). The (κ-ε) ...  Read More ...
Study of some Antioxidants in plasma of patients with bladder cancer
Study of some Antioxidants in plasma of patients with bladder cancer

Israa G. Zainal; Mhammed AL-Dori; Abdul-Nasser M. Abdula

Volume 27, Issue 4 , March 2009, Page 751-758

https://doi.org/10.30684/etj.27.4.11

Abstract
  The objective of this study was to determine the catalase activity (CAT),ceruloplasmin activity (CP), glutathione level (GSH) in the plasma of (44) normaldonars (22 male, 22 female,) ...  Read More ...
Effects of Lamination Layers on the Mechanical Properties for Above Knee Prosthetic Socket
Effects of Lamination Layers on the Mechanical Properties for Above Knee Prosthetic Socket

M. J. jweeg; S. S. Hasan; J. S. Chiad

Volume 27, Issue 4 , March 2009, Page 759-775

https://doi.org/10.30684/etj.27.4.12

Abstract
  In order to initiate a database on materials properties of typical laminationused in above knee prosthetic limb socket fourteen group of different laminationmaterials layers are manufactured ...  Read More ...
Mass transfer of ozone in purified water
Mass transfer of ozone in purified water

Asawer A. Alwasit; Riyadh S.Al-mukhtar; Omar J. Mahmood

Volume 27, Issue 4 , March 2009, Page 776-786

https://doi.org/10.30684/etj.27.4.13

Abstract
  This work presents the study of ozone mass transfer in water in bubble column with0.5cm inside diameter and 2 m height. The volumetric mass transfer, rate constant ofozone decomposition ...  Read More ...
Fusion Face and Palmprint for Human Recognition via Spectral Eigenvector
Fusion Face and Palmprint for Human Recognition via Spectral Eigenvector

Hana M. Salman

Volume 27, Issue 4 , March 2009, Page 787-798

https://doi.org/10.30684/etj.27.4.15

Abstract
  The Biometrics recognition systems act as an efficient method with broadapplications in the area of: security access control, personal identification to humancomputercommunication. ...  Read More ...
Study the Influence of Poly Vinyl Acetate on Flow Behavior of Bentonite Dispersions in Water
Study the Influence of Poly Vinyl Acetate on Flow Behavior of Bentonite Dispersions in Water

Saad R. Sultan

Volume 27, Issue 4 , March 2009, Page 799-808

https://doi.org/10.30684/etj.27.4.16

Abstract
  The present investigation is concerned to study the influence of poly vinylacetate (PVAc.) on flow behavior of bentonite dispersions in water, poly vinyl acetatewas added to the bentonite ...  Read More ...
Design charts for channel shaped reinforced concrete short columns subjected to axial compressive load and uniaxial bending
Design charts for channel shaped reinforced concrete short columns subjected to axial compressive load and uniaxial bending

Sarmad S. Abdul-Qader AL-Badri; Asmaa A. Ahmad

Volume 27, Issue 4 , March 2009, Page 809-820

https://doi.org/10.30684/etj.27.4.17

Abstract
  Eight design charts are presented for reinforced concrete short C-columns subjected to axial compressive load plus uniaxial bending. For design these charts can be used for determining ...  Read More ...
Studing Of Some Phisical Properties And Morphology Of Blends Of Hdpe /Lldpe After And Before Exposure To Uv Light
Studing Of Some Phisical Properties And Morphology Of Blends Of Hdpe /Lldpe After And Before Exposure To Uv Light

Najat J. Saleh; Nabeela A. Mohammed; Weam A. Abed

Volume 27, Issue 4 , March 2009, Page 820-830

https://doi.org/10.30684/etj.27.4.18

Abstract
  Products made of polyethylene used out doors are subjected to UV-degradation. Infact, many polymers show changes in physical properties during service lifetime, whenthey are exposed ...  Read More ...
The Effect of Thermal Loadings on the Dynamic Behavior of Cylindrical – Conical Intersection shell
The Effect of Thermal Loadings on the Dynamic Behavior of Cylindrical – Conical Intersection shell

Muhsan J. Jweeg; Ammar A. Al-Filfily; Ali B. Assi

Volume 27, Issue 4 , March 2009, Page 831-851

https://doi.org/10.30684/etj.27.4.19

Abstract
  This paper presented a numerical methods based on FEM were used to studythe effect of temperature on the dynamic characteristic of composite cylindricalconical shell with different ...  Read More ...
Impingement Cooling Characteristics of a Cube in Cross Flow
Impingement Cooling Characteristics of a Cube in Cross Flow

Jalal M. Jalil; Sabah T. Ahmed; Adnan A. Abdel Rasool

Volume 27, Issue 4 , March 2009, Page 852-867

https://doi.org/10.30684/etj.27.4.20

Abstract
  An experimental and numerical investigation is carried out for the heat transfer froma cube faces subjected to impinging jet which centrally strikes the top face of the cube. Thecube ...  Read More ...