Volume 4, Issue 8 (2007) | American Journal of Applied Sciences

Flow Characteristics in Elastic Arteries Using a Fluid-Structure Interaction Model

H. Niroomand Oscuii — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.516.524

In this study the interaction of blood flow with arterial wall has been investigated using FSI (Fluid-Structure Interaction) modeling. Computer simulation of pulsatile blood flow was carried out on th...

An Adjustable Sample Size Estimation Model for Usability Assessment

Haidar S. Jabbar — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.525.532

Usability assessment plays a fundamental role in discovering usability problems and the determination of the level of usability for a given software product. One crucial aspect in every usability asse...

Introducing Radio-Opaque Radio-Lucent Graduated Root Canal Length Indicating Cones (GRCLIC) in Endodontics

Mohammad Rashid Shahidi Bonjar — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.533.537

Radio Opaque-Radiolucent Graduated Root-Canal Length Indicating Cone (GRCLIC) is a new innovative device being introduced for the first time in endodontics literature. GRCLIC can present more accurate...

Anonymous and Non-Repudiation E-Payment Protocol

Sattar J Aboud — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.538.542

There are many proposals offer anonymous and non-repudiation e-payment protocols. But they have the drawbacks that the anonymity can be misused by fraudulent to perform a perfect crimes. Currently, th...

Comparative Characterization of Clinker’s Microstructure at Different Temperature Zone during Cement Production

Mohd Sobri Idris — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.543.546

Temperature is an important parameter for transformation of minerals in clinker during cement productions. It influences the formation of alite from belite during calcinations and clinkering processes...

The Provenance of the Varzaneh Aeolian Sand Field Regarding to Lithology and Texture, SW Esfahan, Iran

H. Pakzad — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.547.553

The main mineralogical/lithological composition of the Varzaneh aeolian sands is sedimentary and igneous lithics. The minor one is metamorphic lithics and mineral grains (such as quartz, feldspar and ...

Corrosion of Copper Metal in Presence of Binary Mixtures

Medhat A. Shaker — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.554.564

The rates of copper corrosion were determined in presence and in absence of different compositions of water-ethanol, -ethylene glycol, -glycerol, -dimethyl sulfoxide (DMSO) and -dioxane binary mixture...

Study the Effects of Ramadan Fasting on the Serum Glucose and Lipid Profile among Healthy Jordanian Students

Kama Mohmoud Saleh Mansi — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.565.569

Ramadan is the holiest month in the Islamic calendar and Muslims fast during this month. We designed this study to evaluate the effect of Ramadan fasting on plasma lipids profile and serum glucose amo...

Design of 16-point Radix-4 Fast Fourier Transform in 0.18µm CMOS Technology

Siva Kumar Palaniappan — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.570.575

This paper introduces detail design of semi-custom CMOS Fast Fourier Transform (FFT) architecture for computing 16-point radix-4 FFT. FFT is one of the most widely used algorithms in digital signal pr...

Development and Early Score Validation of the Malaysian Educator’s Information Technology Attitude Scale (MEITAS)

Wong Su Luan — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.576.583

The purpose of this study was to develop and provide initial validation evidence for an instrument to measure educators’ attitudes toward IT. Data were collected from 817 participants comprising bot...

FPGA Based SPWM Bridge Inverter

M. N. Md Isa — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.584.586

This study presents methodology to generate sinusoidal pulse width modulation (SPWM) signal using Field Programmable Gate Array, FPGA technology. We discussed the unipolar switching scheme and the met...

Marketing Research Merely Reflects The Needs And Wants of Consumers

Theodossiou George — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.587.591

In the recent years, marketers have focused their attention on the consumer. The aim is the acquisition of comparative advantage in the market. They have succeeded to develop organizations oriented to...

Adsorption Kinetic of 8-Hydroxyquinoline on Malachite

Gabriela OPREA — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.592.596

Influence of temperature and collector concentration on its adsorption rate on mineral surface was studied as regarding to the 8-hydroxyquinoline/malachite system. Theoretical equations as well as exp...

A New Error Correction Intuitive Approach in Quantum Communications Protocols

Aris Skander — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.597.604

Quantum Error Correction will be necessary for preserving coherent states against noise and other unwanted interactions in quantum computation and communication. We develop a general theory of quantum...

Thermodynamic Profile of Some Heavy Metal Ions Adsorption Onto Biomaterial Surfaces

Medhat A. Shaker — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.605.612

The adsorption of Co2+, Zn2+, Pb2+ and Hg2+ onto dried non-living biomass (NB) of different Pseudomonas strains has been investigated in detail. Maximum adsorption of these cations is achieved at opti...

A Dynamic Object Fragmentation and Replication Algorithm In Distributed Database Systems

Azzam Sleit — 2007-08-31

American Journal of Applied Sciences, Published online: 31 August 2007; doi:10.3844/ajassp.2007.613.618

This paper proposes an enhancement for the ADRW algorithm to achieve dynamic fragmentation and object allocation in distributed databases. The algorithm adapts to the changing patterns of object requ...