Number of Articles: 20
Experimental Study of the Effect Geometrical Shape and Vertical Vibrations on Forced Convection Heat Transfer Coefficient from Circumferentially Triangle-Cross Section Finned Cylinder
Volume 29, Issue 4 , March 2011, Page 153-174
Abstract
The aim of this work is to perform an experimental study for the effect of forced vertical vibrations on forced convection heat transfer coefficient, by the use of a circumferential ... Read More ...
Effect of Asphalt Concrete Test Results Deviation on Ratio Discount Decided of Cost And Ability Decrement
Volume 29, Issue 4 , March 2011, Page 175-194
Abstract
The road is the mirror of the civilization in any country so the quality and the quantity of the paved road measure the development in the country. During construction stage must be ... Read More ...
Studying The Importance of Evaluation And Determination of Volume Fraction Values For Wound Glass And Carbon Fiber Reinforced Composites
Volume 29, Issue 4 , March 2011, Page 195-204
Abstract
The wide and increased use of the composite materials in industry especially into important applications such as pipes and pressure vessels tends to give the study of their properties ... Read More ...
Analytical Criticizing Study of Governmental Contracts Instructions no.1, Issued by the Ministry of Planning and Developing Cooperation at 2008
Volume 29, Issue 4 , March 2011, Page 205-217
Abstract
For the important role of the Governmental Contracts Instructions, issued by the Ministry of Planning and Developing Cooperation, in regulating the works of the Iraqi Construction Sector, ... Read More ...
The Effect of Hardening Exponent on Mechanical Properties of (Al-Si) Alloy
Volume 29, Issue 4 , March 2011, Page 218-230
Abstract
This approach involves theoretical and experimental study on the effect of cold working percentage on the hardening exponent (n). The important of this object deals with relation of ... Read More ...
Three-Dimensional Analysis of Extrusion in Complex Die by Using Upper Bound Theory
Volume 29, Issue 4 , March 2011, Page 639-650
Abstract
This paper depends on a new analytical method to calculate relative deformation energies for complex die shape by using upper bound theory which is an important method to solve technical ... Read More ...
Sensitivity of Serum Acetylcholine Esterase Toward Derivatives of Oxadiazole
Volume 29, Issue 4 , March 2011, Page 651-664
Abstract
This work addresses the kinetic analysis of the interaction of some oxadiazoles (L1 , L2, L3 & L4) in ethanol with serum acetylcholinesterase. It was found that ethanol have inhibitory ... Read More ...
Mechanical Strength of Silicon Carbide Bonded with Iraqi Clays
Volume 29, Issue 4 , March 2011, Page 665-676
Abstract
Two types of Iraqi clays (Kaolin and Bentonite) were used in bonding process with different weight percentage (5%, 10%, 15%, 20%, and 25%) and with different particle size from clays ... Read More ...
Study of Transient Simulation for Solar Heating System
Volume 29, Issue 4 , March 2011, Page 677-697
Abstract
In the current study simulation method was used for design of solar water heating system. An integrated transient simulation program was built up for simulating the Iraqi solar house ... Read More ...
Study of the Optical Constants of the PMMA/PC Blends
Volume 29, Issue 4 , March 2011, Page 698-708
Abstract
The aim of the present work is concerned with the study of the optical constants of the PMMA/PC blend at different concentrations. The samples are casted as films from the PMMA and ... Read More ...
Numerical Methods for Fractional Reaction-Dispersion Equation with Riesz Space Fractional Derivative
Volume 29, Issue 4 , March 2011, Page 709-715
Abstract
In this paper, a numerical solution of fractional reaction-dispersion equation with Riesz space fractional derivative has been presented. The algorithm for the numerical solution for ... Read More ...
Texture Analysis of Brodatz Images Using Statistical Methods
Volume 29, Issue 4 , March 2011, Page 716-724
Abstract
Textures are one of the important features in computer vision for many applications. Most of attention has been focused on the texture features. An important approach to region description ... Read More ...
Long Term Strength and Durability of Clayey Soil Stabilized With Lime
Volume 29, Issue 4 , March 2011, Page 725-735
Abstract
This study deals with durability characteristics and unconfined compressive strength of clayey soil stabilized with lime. The tests comprises of unconfined compressive strength for ... Read More ...
Study of Signal Estimation Parameters via Rotational Invariance Technique by Using Ants Colony Optimization Algorithm
Volume 29, Issue 4 , March 2011, Page 736-749
Abstract
In this paper, an algorithm based on Ants Colony Optimization (ACO) is proposed for extraction of the Directions of Arrival (DOA) of several signals impinging on uniform linear arrays. ... Read More ...
Cryogenic Treatments of Hot Work Tool Steel (56NiCrMoV7)
Volume 29, Issue 4 , March 2011, Page 750-769
Abstract
The main objective of this paper is to study the effect of Cryogenic treatment of hot work tool steel type (56NiCrMoV7) on the microstructure and mechanical properties. Three different ... Read More ...
Watermarking in WAV Files Bases on Phase Coding
Volume 29, Issue 4 , March 2011, Page 770-780
Abstract
The growth of the network multimedia open the illegal ways for users to use the digital media without any hindrance or control. This state created, the need for the copyright protection ... Read More ...
Generating of Chaotic Signals by using Semiconductor Laser with Optical Feedback
Volume 29, Issue 4 , March 2011, Page 781-790
Abstract
This paper addresses theoretically generating the chaotic signals by using semiconductor laser diode of 1550 nm with optical feedback. The performance of a semiconductor laser subjected ... Read More ...
Advanced Neighborhood Operation Based Image Zooming In
Volume 29, Issue 4 , March 2011, Page 791-804
Abstract
Perhaps the most interesting feature of digitally encoded image data is that the image can be analytically manipulated. An entire field of computer graphics, named image processing, ... Read More ...
The Effect of Pure Aluminum Weight Percent on Different Properties of a New Cermet Material Made of Al-Machinable Glass Ceramic
Volume 29, Issue 4 , March 2011, Page 805-813
Abstract
In this research high pure aluminum metal with the following weight percent (1,2,3,4,5) has been added to machinable glass-ceramic, after the preparation of the samples by pressing ... Read More ...
Study on The Production of Ammonium Sulfate Fertlizer From Phosphogypsum
Volume 29, Issue 4 , March 2011, Page 814-821