Number of Articles: 20
Study The Reasons for The Increase in The Proportion of Damage in The Dry Clay and The Phenomenon of Effloresce for Pottery Brick
Volume 27, Issue 12 , September 2009, Page 423-437
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
Volume 27, Issue 12 , September 2009, Page 438-452
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
Volume 27, Issue 12 , September 2009, Page 2245-2256
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
Volume 27, Issue 12 , September 2009, Page 2257-2267
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
Volume 27, Issue 12 , September 2009, Page 2268-2276
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
Volume 27, Issue 12 , September 2009, Page 2277-2289
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
Volume 27, Issue 12 , September 2009, Page 2290-2307
Abstract
The present work is an experimental study on the effect of solid loading and solid 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
Volume 27, Issue 12 , September 2009, Page 2308-2321
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
Volume 27, Issue 12 , September 2009, Page 2322-2335
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
Volume 27, Issue 12 , September 2009, Page 2336-2351
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
Volume 27, Issue 12 , September 2009, Page 2352-2366
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
Volume 27, Issue 12 , September 2009, Page 2367-2384
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
Volume 27, Issue 12 , September 2009, Page 2385-2397
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)
Volume 27, Issue 12 , September 2009, Page 2398-2410
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
Volume 27, Issue 12 , September 2009, Page 2411-2424
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
Volume 27, Issue 12 , September 2009, Page 2425-2446
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
Volume 27, Issue 12 , September 2009, Page 2447-2464
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
Volume 27, Issue 12 , September 2009, Page 2465-2478
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
Volume 27, Issue 12 , September 2009, Page 2479-2493
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
Volume 27, Issue 12 , September 2009, Page 2494-2516