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Research ArticleOpen accessIn the abstractInterface Micromotion of Cementless Hip Stems in Simulated Hip ArthroplastyMohammed Rafiq Abdul Kadir, Nazri KamsahProblem statement: The design of hip prostheses has evolved over time due to various complications found after hip replacement surgery. The currently commercially available cementless femoral stems can be categorized into one of three major types, straight cylindrical, tapered rectangular and anatomical. Each type proposes a unique concept to achieve primary stability-a major requirement for bone healing process. Virtual analyses … …American Journal of Applied Sciences, Vol. 6, Issue 9 · 30 Sep 2009 · 7,321 accessesView PDFCite
Research ArticleOpen accessIn the abstractPersonal Computer Based Clinical Programming Software for Auditory ProsthesesK. Rajakumar, P. Seetha RamaiahAuditory Prostheses (AP) are widely used electronic devices for patients suffering with severe to profound senosorineural deafness by electrically stimulating the auditory nerve using an electrode array surgically placed in the inner ear. AP mainly contains external Body Worn Speech Processor (BWSP) and internal Implantable Receiver Stimulator (IRS). BWSP receives an external sound or speech and generates encoded speech data … …Journal of Computer Science, Vol. 5, Issue 8 · 31 Aug 2009 · 6,902 accessesView PDFCite
Research ArticleOpen accessIn the abstractApplication of Direct Current and Temperature Stresses of Low-Voltage ZnO Based Varistor CeramicsM. G.M. Sabri, B. Z. Azmi, Zahid Rizwan et al.Problem statement: The stresses to humidity, DC and AC bias, multiple impulse voltages and high temperatures are known to affect the varistor performance and it is also interesting to know the effect of both DC bias and temperature stresses at the same time. Approach: Here, the simultaneous DC and temperature stresses degradation was investigated to see the changes of nonlinear … …American Journal of Applied Sciences, Vol. 6, Issue 8 · 31 Aug 2009 · 8,379 accessesView PDFCite
Research ArticleOpen accessIn the abstractIntegrated Metric-Ad Hoc On-Demand Distance Vector: A Routing Protocol over Wireless Mesh NetworksMd. Arafatur Rahman, Farhat Anwar, Md. Saiful AzadProblem statement: Wireless Mesh Networks (WMNs) is an emerging technology for wireless environment. Since WMNs are permanent or semi-permanent network, an efficient and reliable path establishment is the core concern for such type of networks. Several performance metrics has been designed for WMNs such as Expected Transmission Count (ETX), Expected Transmission Time (ETT), interference Aware Routing Metric (iAWARE), Link Type … …Journal of Computer Science, Vol. 5, Issue 7 · 31 Jul 2009 · 7,493 accessesView PDFCite
Research ArticleOpen accessIn the abstractFinite Element Analysis of the Crack Propagation for Solid MaterialsMiloud Souiyah, A. Muchtar, Abdulnaser Alshoaibi, A. K. AriffinProblem statement: The use of fracture mechanics techniques in the assessment of performance and reliability of structure is on increase and the prediction of crack propagation in structure play important part. The finite element method is widely used for the evaluation of SIF for various types of crack configurations. Source code program of two-dimensional finite element model had been developed, … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,842 accessesView PDFCite
Research ArticleOpen accessIn the abstractSeasonal Variations of n-6: n-3 Ratios and Fatty Acid Compositions in Foot and Tissue of Chiton lamyi in a High Primary Productivity AreaNooshin Sajjadi, Peyman Eghtesadi-Araghi, Shahla Jamili et al.Problem statement: Fatty acid content and composition in mollusks is a function of their feeding diversity. Chabahar bay located in the northern part of Oman sea in Indian ocean provides high rates of primary productivity and a diverse food source for mollusks in this area. Identification of fatty acid compositions of Chiton lamyi and study their seasonal changes in the … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,195 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment of Dual Fuel Single Cylinder Natural Gas Engine an Analysis and Experimental Investigation for Performance and EmissionSyed Kaleemuddin, G. Amba Prasad RaoThe present study reports the experimental investigations carried and upgradation of 395 cc air cooled engine to dual fuel (CNG/Gasoline) application. The original 395 cc direct injection naturally aspirated, air cooled diesel engine was first converted to run on Gasoline by addition of electronic ignition system and reduction in compression ratio to suit both gasoline and CNG application. CFX software … …American Journal of Applied Sciences, Vol. 6, Issue 5 · 31 May 2009 · 7,768 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Convergence-Confinement Method: Roles and Limits in Modern Geomechanical Tunnel DesignPierpaolo OresteThe convergence-confinement method, based on the analysis of the stress and strain state that develops in the rock around a circular tunnel, has been presented in this study with the two analytical solutions that have been most frequently used in recent years. Problem statement: Thanks to the increased power of electronic processors and the spread of numerical methods, the role … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 10,151 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment of Efficient Finite Element Software of Crack Propagation Simulation using Adaptive Mesh StrategyAbdulnaser M. Alshoaibi, A. K. Ariffin, M. N. AlmaghrabiThe purpose of this study is on the determination of 2D crack paths and surfaces as well as on the evaluation of the stress intensity factors as a part of the damage tolerant assessment. Problem statement: The evaluation of SIFs and crack tip singular stresses for arbitrary fracture structure are a challenging problem, involving the calculation of the crack path … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,822 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Temperature Dependence Coefficients of Amorphous Silicon and Crystalline Photovoltaic Modules Using Malaysian Field Test InvestigationSulaiman Shaari, Kamaruzzaman Sopian, Nowshad Amin, Mohd Nizan KassimThe temperature dependence coefficients of amorphous silicon and crystalline photovoltaic (PV) modules using Malaysian field data have been obtained using linear regression technique. This is achieved by studying three test stand-alone PV-battery systems using 62 Wp a-Si, 225 Wp multi-crystalline and 225 Wp mono-crystalline PV modules. These systems were designed to provide electricity for rural domestic loads at 200 W, … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,281 accessesView PDFCite