Volume 4, Issue 12 (2007) | American Journal of Applied Sciences

An Investigation on the Effect of the Coupled and Uncoupled Formulation on Transient Seepage by the Finite Element Method

Ahad Ouria — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.950.956

2-D transient seepage beneath a dam was investigated by the finite element method. Governing equations were considered in coupled and uncoupled methods. At first stage, the fluid continuity equation f...

Fabrication and Testing of a Medical Surgical Instrument Capable of Detecting Simulated Embedded Lumps

Javad Dargahi — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.957.964

A novel endoscopic grasper is being fabricated and tested. This grasper can be used in detecting lumps or tumors in biological tissues. The detailed fabrication process of the tactile sensor has been ...

Relation between Autoimmunity Chronic Urticaria and the Levels of Plasma Prothrombin F₁₊₂

Liu Xiaoming — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.965.969

A number of recent epidemiologic and experimental studies have enhanced our knowledge of the etiology and pathogenesis of chronic urticaria (CU), a disease that imposes profound impairment on patient'...

A Generalized Discrete-Time Long Memory Volatility Model for Financial Stock Exchange

Chin Wen Cheong — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.970.976

We proposed a simple way to combine a few long memory models in financial market volatility modeling using daily, range and high frequency data. This model was able to fit the return, range of daily r...

Fault Detection and Isolation in Dynamic Systems using Statistical Local Approach and Hybrid Least Squares Algorithm

Belkacem Athamena — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.977.986

A fault detection and isolation (FDI) scheme for dynamic system proposed. This study deals with the design of discrete-time linear system using delta operator approach and the hybrid least squares (HL...

A Sliding Mode Speed Control of an Induction Motor

Kais Jamoussi — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.987.994

Field-oriented control was combined to robust sliding mode for motor speed control. A smooth continuous function was added in order to overcome chattering caused by Sliding Mode Controller (SMC). Simu...

Physical Characteristics of Maize Cob Briquette under Moderate Die Pressure

Patomsok Wilaipon — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.995.998

The potential energy content of maize cob available in Thailand was calculated based on maize productivity, the residue-to-product ratio and the heating value of maize cob. It was found that the compu...

Fine Needle Aspiration Cytology Evaluation for Classifying Breast Cancer Using Artificial Neural Network

Nor Ashidi Mat Isa — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.999.1008

Thirteen cytology of fine needle aspiration image (i.e. cellularity, background information, cohesiveness, significant stromal component, clump thickness, nuclear membrane, bare nuclei, normal nuclei,...

IR Laser Plasma Interaction with Glass

Rabia Qindeel — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1009.1015

The interaction of laser plasma with respect to glass surface is reported in this paper. A Q-switched Nd:YAG laser was used as ablation source. Glass material is utilized as target specimen. Aluminum ...

Investigations on the Grasping Contact Analysis of Biological Tissues With Applications in Minimally Invasive Surgery

Ali Bonakdar — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1016.1023

Analytical and finite element methods are employed to determine the contact pressure on the surface of a tissue being grasped by an endoscopic grasper, in Minimally Invasive Surgery (MIS). Normally, a...

Optical Properties and Kinetic Behavior of Chlorine in Pure Water and Swimming Pool Water using Surface Plasmon Resonance Technique

W.Y.W. Yusmawati — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1024.1028

An optical sensor based on surface plasmon resonance phenomenon for detection of chlorine in pure water and swimming pool water is presented. The measurement was carried out at room temperature using ...

Sociopolitical Instability and Economic Growth Empirical Evidence from Sri Lanka

Changsheng Xu — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1029.1035

Sociopolitical instability severely affects economic growth in short and long run. This study analyzes that sociopolitical instability measured by proxy measure; annual growth rate of tourist arrivals...

Bending Moments Distribution at the Main Structural Elements of Skew Deck-Slab and Their Implementation on Cost Effectiveness

Maher Kakish — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1036.1039

The distribution of bending moments in T-beam deck slab varies from one T-beam to another. The design of T-beams should be based on the actual bending moments each beam is subjected to for the purpose...

A Graphical Based Method for a Class of One-Stage Bounded Variables and Single Constrained Linear Programming Problems

Suwitchaporn Witchakul — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1040.1044

An efficient and effective special purpose method is proposed for solving a class of one-stage single constrained linear programming problems with a finite number of right hand side scenarios and boun...

Business Cycle Synchronization Between Australia and New Zealand

Jie Wei — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1045.1053

There has been a high degree of economic and financial integration between Australia and New Zealand with free trade agreements linking the capital and labor markets. Given a strong economic relations...

Decolorization of Remazol Brilliant Blue Dye Effluent by Advanced Photo Oxidation Process (H₂O₂/UV system)

A. S. Mahmoud — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1054.1062

Advanced photo oxidation processes hold great promise for the improved treatment of textile dye effluent. In this study, the effectiveness of a H2O2/UV system for the decolorization of remazol brillia...

Assessment of Soil Solution Chemicals after Tannery Effluents Disposal

Célia A. Surita — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1063.1070

Knowledge about soil solution chemicals is important for assessing their mobility, availability, migration to groundwater and toxicity to plants. The objective of this study was to apply factor analys...

Effect of Internal Flow Patterns on Heat transfer Performance of a Closed-end Oscillating Heat Pipe at Vertical Position

S. Rittidech — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1071.1074

This article describes the effects of varying bond numbers (Bo) and aspect ratios (Le/d) on flow pattern of a close-end oscillating heat-pipe (CEOHP). The CEOHPs used employed a glass tube with inside...

Lightning Over-Voltages on Amman-Aqaba 400 KV Line

Ghassan Halasa — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1075.1078

An attempt is made to evaluate the lightning over-voltage failure rate for Amman- Aqaba 400kV transmission line by studying the geographical and temporal characteristics of lightning causing the line ...

Simulation Model of Brushless Excitation System

Ahmed N. Abd Alla — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1079.1083

Excitation system is key element in the dynamic performance of electric power systems, accurate excitation models are of great importance in simulating and investigating the power system transient phe...

Contractor's Perceptio

Faridah Muhamad Halil — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1084.1089

Contractor selection is one of the main activities of clients. Without a proper and accurate method for selecting the most appropriate contractor, the performance of the project will be affected. The ...

Gamma Radiosensitivity Study on Long Bean (Vigna sesquipedalis)

Ellyfa Kon — 2007-12-31

American Journal of Applied Sciences, Published online: 31 December 2007; doi:10.3844/ajassp.2007.1090.1093

This study was conducted to determine the LD50 and effect of gamma ray on germination percentage, plant height, survival percentage, root length, root dry weight and shoot dry weight of seedlings deri...