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Research ArticleOpen accessEvery word in the titlePhysical Properties of Phenol Compound: Semi-empirical Calculation of Substituent Effects [Part One]Ammar A. Ibrahim, Eid A. AbdalrazaqProblem statement: Physical properties of phenol compound such as steric energy, charge of oxygen, ionization potential, dipole moment, LUMO and bond length have been calculated. Approach: All molecular geometries were minimized by quantum mechanic especially at (AM1) method was used to investigate the effect of a variety of substituents on the phenol (H, o-Cl, p-Cl, m-Cl, o-CH3, m-CH3, p-CH3, o-NH2, … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,365 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDetermination of Kinetic Correction Coefficient of Fluid Flow Using a Generic Multiple Orifice Physical Scale Model StructureEmmanuel M. AdigioProblem statement: Diesel particulate filters are fast becoming integral parts of diesel engines, light and heavy duty, due to their potential in the reduction of particulate matter from exhaust gases and their noise muffling property. Consequently, several researchers are developing mathematical models for the study of fluid flow through the filter substrate and in the aiding of filter systems design. … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,553 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleChemical and Physical Characteristics of Cocopeat-Based Media Mixtures and Their Effects on the Growth and Development of Celosia cristataYahya Awang, Anieza Shazmi Shaharom, Rosli B. Mohamad, Ahmad SelamatProblem statement: Cocopeat is considered as a good growing media component with acceptable pH, electrical conductivity and other chemical attributes but it has been recognized to have high water holding capacity which causes poor air-water relationship, leading to low aeration within the medium, thus affecting the oxygen diffusion to the roots. Incorporation of coarser materials into cocopeat could improve the … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 1 · 31 Mar 2009 · 19,001 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffects of Grazing Sorghum Stubble on Soil Physical Properties and Subsequent Crop PerformanceB.J. Radford, D.F. Yule, M. Braunack, C. PlayfordTwo grazing trials were conducted on a Vertosol in central Queensland to assess the effects of stubble grazing by cattle on soil properties and subsequent crop performance. Two adjacent contour bays were selected for two treatments (grazed and ungrazed) in each trial. Both trials were conducted following a grain sorghum crop. In trial 1 (during 1996) the surface soil was … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 4 · 31 Dec 2008 · 8,154 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBusy Period Analysis of a Man-machine System Operating Subject To Different Physical ConditionsG S. Mokaddis, M. L. Tawfek, S. A.M. ElhssiaThis study deals with some characteristics of a single-unit of a man-machine system operating under different physical conditions. The failure, repair and change of physical conditions (good-poor) are stochastically independent random variables each having an arbitrary distribution. The system analysed by some Markov process technique. The busy period, expected number of visits by the repairman and the cost per unit … …Journal of Mathematics and Statistics, Vol. 1, Issue 2 · 30 Jun 2005 · 6,160 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Rise of the Physical Sciences in “Stricto Sensu” The Developmental Approach and the History of SciencesGeorg W. OesterdiekhoffJ. Piaget dedicated several books and articles on the psychogenetic reconstruction of the history of sciences. A couple of disciples followed Piaget´s ideas and reconstructed the history of single disciplines or of some scientific developments in terms of developmental psychology. They found a striking similarity between childish psychological stages and the sciences in their premodern period. Correspondingly, they also found … …Physics International, Vol. 8, Issue 1 · 31 Oct 2017 · 8,636 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleExperimental Investigation of Thermo-Physical Properties of Soil Using Solarisation TechnologyAhmed Abed Gatea Al-Shammary, Abbas Kouzani, Akif Kaynak et al.Soil Thermo-Physical Properties (TPP) depend on heat transfer in the soil. This paper presents a study on different soil solarisation technologies influenced by soil TPP. This study evaluates three factors: The tillage depth for soil at three levels (15, 25 and 45 cm), the number of plastic film at three levels (single, double and without plastic film) and three cases … …American Journal of Applied Sciences, Vol. 14, Issue 7 · 17 Jul 2017 · 7,957 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePhysical Therapy Improved Hand Function in a Patient with Traumatic Peripheral Lesion: A Case StudyMarco Orsini, Julio Guilherme Silva, Clynton Lourenco Correa et al.Problem statement: Nerves are frequently injured by traumatic lesions, such as crushing, compression (entrapment), stretching, partial and total extraction, resulting in damages to the transmission of nerve impulses and to the reduction or loss of sensitivity, to the motility and to the reflexes of the innervated area. The objective of this study was to evaluate the results of a rehabilitation … …Current Research in Medicine, Vol. 3, Issue 2 · 6 Aug 2012 · 7,895 accessesView PDFCite
Research ArticleOpen accessEvery word in the titlePsychosocial Correlates of the Need for Physical Education and Sports in High SchoolMihai Curelaru, Beatrice Abalasei, Mioara CristeaProblem statement: Sports and movement activities play an important role in the harmonious development of children; Special attention should be paid to the factors influencing their involvement in sportive activities. The aim of this study was related to identifying possible psychosocial correlates of the need for physical education and sports in Romanian society and increasing awareness on the importance of … …Journal of Social Sciences, Vol. 7, Issue 4 · 10 Aug 2011 · 8,661 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptical and Physical Properties of Bismuth Borate Glasses Doped With Dy3+Pichet Limsuwan, Jakrapong Kaewkhao, Parnuwat Chimalawong, Smit InsiripongThis study reports on physical and optical properties of Dy3+ doped bismuth borate glass. The glasses containing Dy3+ in (70-x)B2O3:30Bi2O3:xDy2O3 (where x = 0.0-2.5 mol%) have been prepared by melt-quenching method. In order to understand the role of Dy2O3 in these glasses, the density, molar volume and optical spectra were investigated. The results show that molar volume of the glasses … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 7,355 accessesView PDFCite