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26 results for “conduction”
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Research ArticleOpen accessEvery word in the titleAnalytical Solution Based on a New Series along with the Numeric Solution of the Non-Homogeneous Transient Heat Conduction Equation, in Hollow Cylinder under General Mixed Boundary ConditionsMehdi Zare, F. KardanIn this study, the problem of transient conduction heat transfer for an infinite hollow cylinder under non-homogeneous mixed boundary conditions at the both surfaces simultaneously in radial direction with general heat source depend on time and radius, also general initial condition by the method of superposition and separation variables, is solved and temperature distribution is obtained analytically. A new series … …American Journal of Engineering and Applied Sciences, Vol. 11, Issue 2 · 20 Apr 2018 · 9,492 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleControl Strategy for Discontinuous Conduction Mode Boost Rectifier with Low Total Harmonic Distortion and Improved Dynamic ResponseH.S. AthabDue to its simplicity, the discontinuous conduction mode boost rectifier is potentially the least expensive active line-harmonics reducing circuit. Problem statement: The line current however, shows considerable distortion when the peak input voltage is close to the output voltage, As a result, the input power factor is poor. This study proposes a simple, low-cost method to reduce the line harmonics. … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 4 · 31 Dec 2008 · 7,424 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Effect of Omega-3 Fatty Acids on Nerve Conduction Velocity (NCV) and F-wave Latency in Patients with Diabetic polyneuropathyNaser Zangiabadi, Mohamad N. Ahrari, Nouzar NakhaeeDiabetes mellitus with the prevalence rate of 8.9-12.3% in human population, ultimately leads to the peripheral nervous system involvement in many patients. It causes various types of polyneuropathies, which may manifest abnormalities such as impaired nerve conduction velocity (NCV) and prolonged F-wave latency. The aim of this study was to investigate the effect of omega-3 fatty acids on NCV and … …American Journal of Pharmacology and Toxicology, Vol. 2, Issue 1 · 31 Mar 2007 · 9,279 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Solution of Heat Conduction Equation with Mixed Boundary ConditionsNaser AbdelrazaqThe study is devoted to determine a solution for a non-stationary heat equation in axial symmetric cylindrical coordinates under mixed discontinuous boundary of the first and second kind conditions, with the aid of a Laplace transform and separation of variables method used to solve the considered problem which is the dual integral equations method. …Journal of Mathematics and Statistics, Vol. 2, Issue 1 · 31 Mar 2006 · 7,817 accessesView PDFCite
Research ArticleOpen accessIn the keywordsENERGY PSYCHOLOGY-PRACTICES AND THEORIES OF NEW COMBINATIONS OF PSYCHOTHERAPYDaniel J. BenorEnergy Psychology (EP) includes a spectrum of practices in which people tap on their bodies while focusing their minds on problems they want to change. EP therapies often are very rapidly effective. This article examines varieties of explanations for how EP works, including: Cognitive changes, psychological conditioning, expectation effects, distraction techniques, tapping on acupuncture points, shifts in other biological energies, … …Current Research in Psychology, Vol. 5, Issue 1 · 12 Jul 2014 · 16,534 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffects of Melatonin in Prevention of Neuropathy in STZ-Induced Diabetic RatsNasser Zangiabadi, Vahid Sheibani, Majid Asadi-Shekaari et al.Problem statement: Diabetes mellitus occurs mainly with chronic polyneuropathy, and oxidative stress plays an important role in emergence of most neurologic and behavioral changes in diabetic patients. Many studies have focused on the beneficial effects of various antioxidants such as melatonin on diabetic neuropathy. The aim of this study is to evaluate the effect of melatonin in prevention of neuropathy … …American Journal of Pharmacology and Toxicology, Vol. 6, Issue 2 · 17 Sep 2011 · 9,362 accessesView PDFCite
Research ArticleOpen accessIn the keywordsHomogeneous Bubbles during Jet Impingement QuenchingM. A. Islam, S. F. AhmedProblem statement: Jet impingement quenching has a very effective and large cooling potential and is a very effective means of cooling for many applications. It gives rise to heterogeneous and/or homogeneous nucleation of bubbles, which is yet to be explored. Approach: Analytically investigate the phenomenon that happened during a brief contact of a water jet impinging on a hot surface. … …American Journal of Applied Sciences, Vol. 7, Issue 6 · 30 Jun 2010 · 7,171 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnalytical Solution of Temperature Field in Hollow Cylinder under Time Dependent Boundary Condition Using Fourier seriesGolamali atefi, Mohammad Ali Abdous, Abdolsaeid GanjehkaviriThe objective of this study is to derive an analytical solution of one dimensional heat conduction equation applied in a hollow cylinder, which is subjected to a periodic boundary condition at the outer surface while the inner surface is insulated. The material is assumed to be homogenous and isotropic with time-independent thermal properties. Because of the time-dependent term in the … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2008 · 7,538 accessesView PDFCite
Research ArticleOpen accessIn the keywordsSessile Drop Evaporation and Leidenfrost PhenomenonA. K. Mozumder, M. R. Ullah, A. Hossain, M. A. IslamProblem statement: Quenching and cooling are important process in manufacturing industry for controlling the mechanical properties of materials, where evaporation is a vital mode of heat transfer. Approach: This study experimentally investigated the evaporation of sessile drop for four different heated surfaces of Aluminum, Brass, Copper and Mild steel with a combination of four different liquids as Methanol, Ethanol, Water … …American Journal of Applied Sciences, Vol. 7, Issue 6 · 30 Jun 2010 · 7,956 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDesign of a Single-Phase Rectifier with Improved Power Factor and Low THD using Boost Converter TechniqueIsmail Daut, Rosnazri Ali, Soib TaibThe method of using Boost type of converter was proposed for a 300W single-phase rectifier in this paper. By designing the necessary techniques and methodology, the overall Power Factor (PF) and Total Harmonic Distortion would be improved to the expectation. The cause of having low PF and high THD for a diode-capacitor type of rectifiers is related to non-linearity of … …American Journal of Applied Sciences, Vol. 3, Issue 9 · 30 Sep 2006 · 7,132 accessesView PDFCite