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144 articles for “phenomena”
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Research ArticleOpen accessEvery word in the titleA Study of Parameters Relationship to Backcutting Phenomena During High Speed End Milling of AISI H13Erry Yulian T. Adesta, Afifah Mohd Ali, Delvis Agusman et al.Problem statement: In die and mold industries, surface roughness of the dies and molds produced will determine the end product quality. Therefore, the desired finish surface was specified and the appropriate processes were selected to reach the required quality. Among many contributors to surface quality problem, backcutting is one of the factors influencing the surface roughness. Approach: The aim for … …American Journal of Applied Sciences, Vol. 7, Issue 10 · 31 Oct 2010 · 7,509 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInfluence of Transport Phenomena on Pollutants Concentration in Mediterranean Tunisian RegionsKarim Bouchlaghem, Blaise Nsom, Jean-Francois DorvilleThe objective of this study is to investigate the origin of the polluted air masses in the Tunisian Mediterranean regions and to characterize the atmospheric conditions and the transport and dispersion mechanisms that give rise to pollution events. For this end, we conducted continuous measurements campaigns of surface ozone concentration and meteorological parameters during summer 2011 using mobile and fixed … …American Journal of Environmental Sciences, Vol. 9, Issue 6 · 23 Jan 2014 · 6,697 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleReasons of tutoring Phenomena among Secondary Stage StudentsMustafa Ayroutt, Heba hammadProblem statement: The purpose of this study was to investigate the reasons of tutoring phenomena among secondary stage students in Amman City as perceived by School Principals. Approach: The sample of the study consisted of (117 male principals and 57 female principals). Results: The evaluations of principals regarding tutoring reasons were high, factors related to students came first, followed by … …Journal of Social Sciences, Vol. 7, Issue 3 · 18 Jul 2011 · 7,228 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleElectroosmotic Phenomena in Organic SoilsAfshin Asadi, Bujang B.K. Huat, M. M. Hassim et al.Organic soils or peat represent an accumulation of disintegrated plant remains which have been preserved under condition of incomplete aeration and high water content. In order to develop a fundamental understanding of electroosmotic phenomena in peat, initially microelectrophoresis studies were carried out to conceptualize the electrokinetic phenomena. Then electroosmosis experiments were conducted on rigid cube samples containing 0.0001 M NaCl-water … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,101 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleLaser Interaction and Related Plasma PhenomenaFrederick Osman, Peter Evans, Peter Toups et al.Computations are to be performed using the laser driven inertial fusion energy option based on volume ignition with the natural adiabatic self-similarity compression and expansion hydrodynamics [1]. The numerical work includes the establishing of a multi-branch reaction code to be used for simultaneous fusion reactions of D-D, D-T D-He3 and mutual nuclear reaction products. This will permit the studies of … …American Journal of Applied Sciences, Vol. 2, Issue 1 · 31 Jan 2005 · 6,816 accessesView PDFCite
Review ArticleOpen accessEvery word in the titleStructural Colour from Optical Phenomena Caused by Interference with a Thin or Multilayer Film, Photonic Nanocrystals, Light Scattering and Diffraction Grating EffectRelly Victoria Petrescu, Raffaella Aversa, Antonio ApicellaThe paper presents the Ion Plating Plasma Assisted technology that is applied in the area of surface functionalization with the purpose of preserving the structural colour and relics. The interferometric structural colours applied on titanium surfaces were used and tested together with nano-transparent and at the same time achromatic films on the very old ceramic artifact. In order to test … …Journal of Aircraft and Spacecraft Technology, Vol. 4, Issue 1 · 13 Aug 2020 · 6,503 accessesView PDFCite
Research ArticleOpen accessIn the keywordsQuantum Standpoint for a More Understandable UniverseSebastiano TostoThe study implements the concept of space-time quantum uncertainty to outline a possible model of universe. Simple considerations show that the relativistic equations inferred as a consequence of the uncertainty allow describing effects typically expected in the frame of quantum phenomena, e.g., the fluctuations. These results contribute to clarify issues today still open, like the dark energy, the inflationary expansion … …Space Science International, Vol. 1, Issue 1 · 20 Jun 2013 · 7,113 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThe Recovery of Used Palm Cooking Oil Using Bagasse as AdsorbentRizki Wannahari, Mariam Firdhaus Mad NordinProblem statement: The use and reduce cooking oil is a common phenomena in our society. While some of this cooking oil is further refine most of it however and not subject to any filtration in the refining process medium such as carbon active, silica are commonly use. Approach: The used of bagasse as adsorbent is not common. This is odd … …American Journal of Engineering and Applied Sciences, Vol. 5, Issue 1 · 2 Mar 2012 · 10,315 accessesView PDFCite
Research ArticleOpen accessIn the keywordsStudy of Electromagnetic Radiation and Specific Absorption Rate of Mobile Phones with Fractional Human Head Models via Green's FunctionsNookala Srinivasa Rao, G. R. Babu, P. V.S. SrinivasProblem statement: Electromagnetic Radiation from mobile hand set is identified as one of the side effects for increasing rate of brain tumor. Due to this reason, Mobile phone industries are attentive towards safety issues of human health. Specific Absorption Rate is one of the important parameter while modeling the radiation effect on human head. Brain material with homogeneity is treated … …Journal of Computer Science, Vol. 7, Issue 8 · 16 Jul 2011 · 6,698 accessesView PDFCite
Research ArticleOpen accessIn the keywordsApplication of Adaptive Predictive Control to a Newborn IncubatorMed Aymen Zermani, Elyes Feki, Abdelkader MamiProblem statement: This study presents an application of Indirect Adaptive Generalized Predictive Control (IAGPC) of an incubator for newborn, in order to improve the performance of temperature control. Approach: Analysis of physical phenomena of incubator was involved together knowledge of the dynamic behavior. Incubator was identified by means of Recursive Least Square (RLS) technique associated with a projection of the … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 2 · 13 Jul 2011 · 8,242 accessesView PDFCite