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187 articles for “equivalent”
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Research ArticleOpen accessIn the abstractClosed Die Forging Geometrical Parameters Optimization for Al-MMCM. Jolgaf, S.B. Sulaiman, M.K.A Ariffin, A.A. FaiezaDemand for lighter and stiffer products has been increasing in the last few years especially in automobile manufacturing. The closed die forging process of Metal Matrix Material (MMC) is presented as possible solution, since it produces parts with good mechanical properties and lighter weight. A computational modeling of closed die forging process using finite element method and optimization techniques makes … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 1 · 31 Mar 2008 · 8,482 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Design Strategy for Volumetric Efficiency Improvement in a Multi-cylinder Stationary Diesel Engine and its Validity under Transient Engine OperationP. Seenikannan, V.M. Periasamy, P. NagarajThis paper proposes an approach to improve engine performance of volumetric efficiency of a multi cylinder diesel engine. A computer simulation model is used to compare volumetric efficiency with instantaneous values. A baseline engine model is first correlated with measured volumetric efficiency data to establish confidence in the engine model's predictions. A derivative of the baseline model with exhaust manifold, … …American Journal of Applied Sciences, Vol. 5, Issue 3 · 31 Mar 2008 · 7,502 accessesView PDFCite
Research ArticleOpen accessIn the abstractExtraction of Genomic DNA Using Magnetic Nanoparticles (Fe3O4) as a Solid-Phase SupportZ. M. Saiyed, C. N. RamchandMagnetic separation technology, using magnetic particles, is quick and easy method for sensitive and reliable captures of specific proteins, genetic material and other biomolecules. The current paper describes a universal genomic DNA extraction method optimized in our laboratory using magnetic nanoparticles as a solid phase adsorbent. The yields of the isolated DNA with magnetic method were higher or equivalent to … …American Journal of Infectious Diseases, Vol. 3, Issue 4 · 31 Dec 2007 · 9,831 accessesView PDFCite
Research ArticleOpen accessIn the abstractOperational Semantics for Lazy EvaluationMahmoud A. Abou Ghaly, Sameh S. Daoud, Azza A. Taha, Salwa M. AlyAn operational semantics for lazy evaluation of a calculus without higher order functions was defined. Although it optimizes many aspects of implementation, e.g. there is a sharing in the recursive computation, there is no α conversion, the heap is automatically reclaimed, and an attempt to evaluate an argument is done at most once. It is still suitable for reasoning about … …Journal of Computer Science, Vol. 3, Issue 8 · 31 Aug 2007 · 6,710 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparative Study by Electrochemical Impedance Spectroscopy (EIS) On The Corrosion Resistance of Industrial and Laboratory Zinc CoatingsY. Hamlaoui, F. Pedraza, L. TifoutiIn this work, corrosion monitoring of Zn-based coatings is investigated through potentiodynamic and electrochemical impedance spectroscopy (EIS) methods. The first part of the study is devoted to galvanised coatings conventionally manufactured in the industry. The second part focuses on the corrosion resistance of a laboratory-made electrolytic coating. For such purpose, the corrosion behaviour is studied in NaCl media under various … …American Journal of Applied Sciences, Vol. 4, Issue 7 · 31 Jul 2007 · 7,602 accessesView PDFCite
Research ArticleOpen accessIn the abstractExtraction and Identification of Water-Soluble Compounds in Palm-Pressed Fiber by SC-CO2 and GC-MSHarrison Lau Lik Nang, Choo Yuen May, Ma Ah Ngan, Chuah Cheng HockThe residual oil recovered from palm-pressed fiber is known to contain high level of carotenes (4,000 mg kgˉ1 to 6,000 mg kgˉ1) and vitamin E such as tocopherols and tocotrienols (2,000 mg kgˉ1 to 3,000 mg kgˉ1). In this study, the water-soluble compounds in fresh palm-pressed fiber were recovered by supercritical carbon dioxide (SC-CO2) extraction. The concentration of these compounds … …American Journal of Environmental Sciences, Vol. 3, Issue 2 · 30 Jun 2007 · 8,326 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiomedicine and Informatics Model of Alzheimer's DiseaseKang Cheng, Chang-Hua ZouIn a perspective of biomedicine and informatics, the mechanism of Alzheimer's, senile amnesia, or other aging-associated and cognitive impairment related diseases involve four important informative processing procedures: propagation, consolidation, retrieval and cognition, In this study, we systematically model the four procedures based on published experimental data. When modeling the propagation, we develop an equivalent circuit of biological membrane to describe … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 3 · 28 May 2007 · 6,828 accessesView PDFCite
Research ArticleOpen accessIn the abstractSimulation of Aorta Artery Aneurysms Using Active Electronic CircuitKamran Hassani, Mahdi Navidbakhsh, Mostafa RostamiThe fusiform and saccular aneurysms in different aorta artery sections were studied using an electronic circuit of cardiovascular system. The geometrical model of each artery section including thoracic and abdominal were generated in accordance with original anatomical data. By increasing the rate of aneurysm in each studied section, the pressure drop were calculated using CFD method, furthermore the compliance variations … …American Journal of Applied Sciences, Vol. 4, Issue 4 · 30 Apr 2007 · 7,239 accessesView PDFCite
Research ArticleOpen accessIn the abstractHypoglycemic and Antihyperlipidemic Effect of Four Korean Medicinal Plants in Alloxan Induced Diabetic RatsJi Su Kim, Jung Bong Ju, Chang Won Choi, Sei Chang KimTo consider potentially new hypoglycemic and antihyperlipidemic sources, aqueous extracts from four Korean medicinal plants, Chrysanthemum coronarium, Dioscorea batatas, Morus alba, Citrus unshiu, were investigated in alloxan-induced diabetic rats. To induce diabetes, 36 rats were administered alloxan orally (120 mg/kg body weight) for 2 weeks and among those 6 rats were used as a diabetic control. Effect of extracts from … …American Journal of Biochemistry and Biotechnology, Vol. 2, Issue 4 · 31 Dec 2006 · 9,168 accessesView PDFCite
Research ArticleOpen accessIn the abstractTolerances Applied in Combinatorial OptimizationBoris Goldengorin, Gerold Jäger, Paul MolitorIn this paper we deal with sensitivity analysis of combinatorial optimization problems and its fundamental term, the tolerance. For three classes of objective functions (∑, ∏, MAX) we give some basic properties on upper and lower tolerances. We show that the upper tolerance of an element is well defined, how to compute the upper tolerance of an element and give … …Journal of Computer Science, Vol. 2, Issue 9 · 30 Sep 2006 · 18,430 accessesView PDFCite