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66 results for “Stress-Strength”

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Research ArticleOpen accessIn the abstractMATERIAL PARAMETER OF RUBBER GLOVE VULCANIZED USING COMBINED INFRARED AND HOT-AIR HEATINGTipapon Khamdaeng, Numpon Panyoyai, Thanasit WongsiriamnuayVulcanization is an important chemical-thermal process in production of rubber products resulting in change of material properties, increased elasticity and strength. In general, Young’s modulus is used as an indicator of elastic deformation at loading configuration. However, rubber is not truly elastic and a single parameter is insufficient to describe the whole deformation contributed by microstructure of rubber network. Therefore, … …American Journal of Applied Sciences, Vol. 11, Issue 4 · 8 Feb 2014 · 7,310 accessesView PDFCite
Research ArticleOpen accessIn the abstractFire Design: Direct Comparison Between Fire Curves. The Case Study of a NurseryMara Lombardi, Giuliano Rossi, Nicolò Sciarretta, Nino OrangesAccording to fire safety engineering, the present study analyzes fire design settings for simulation of fire in a nursery and proposes to compare simulations developed with a natural fire curve and nominal fire curve. Comparative analysis was developed according to thermo-fluid dynamic parameters that are relevant to the safety of the exposed and for the representative period of the danger … …American Journal of Engineering and Applied Sciences, Vol. 6, Issue 3 · 9 Sep 2013 · 7,350 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Thai Style Stretching Exercise on "Ruesi Dud Ton" on Physical Health and Oxidative Stress in Healthy VolunteerJintanaporn Wattanathorn, Tasanee Boonterm, Wipawee Thukhummee et al.Despite the health benefit reputation of Thai stretching exercise "Ruesi dud ton", no scientific evidence is available. Therefore, we aimed to determine the effect of Thai style stretching exercise on physical health and oxidative stress markers including Malondialdegyde (MDA) level and the activities of main scavenger enzymes including Superoxide Dismutase (SOD), Catalase (CAT) and Glutathione Peroxidase (GSH-Px). We had determined … …OnLine Journal of Biological Sciences, Vol. 12, Issue 4 · 22 Feb 2013 · 7,743 accessesView PDFCite
Research ArticleOpen accessIn the abstractStability of Rock Pillars with Singular and Persistent DiscontinuitiesPierpaolo OresteProblem statement: The strength of rock pillars in the presence of single, persistent, natural discontinuities can seriously be compromised and lead the pillar to collapse because of instability along the discontinuity itself. Approach: A specific analysis method for this kind of problem has been set up in this study to evaluate the stability of pillars and to determine the dimension … …American Journal of Applied Sciences, Vol. 9, Issue 9 · 14 Jul 2012 · 6,755 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of the Stability of Underground Rock Pillars through a Probabilistic ApproachMassimo Guarascio, Pierpaolo OresteProblem statement: When the room and pillar mining method is adopted, the dimensioning of the rock pillars is one of the most important aspects that need to be faced from the engineering point of view. The available calculation methods are usually simplified and involve the areas of influence method for the evaluation of the mean axial stress induced in the … …American Journal of Applied Sciences, Vol. 9, Issue 8 · 30 Jun 2012 · 7,034 accessesView PDFCite
Research ArticleOpen accessIn the abstractRectangular Storm Sewer Design Under Equal Sediment MobilityJaber AlmedeijRectangular storm sewers are conduits delivering water to outfall locations and have sizes that are typically larger than standard pipes, by which they become subject to more sediment deposits during operation and thus require higher flow strengths to maintain the bed clean. This study suggests a design procedure of self-cleansing rectangular sewers based on maintaining a lower limit of Shields … …American Journal of Environmental Sciences, Vol. 8, Issue 4 · 19 Jun 2012 · 7,758 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Elastic-Plastic Contact Performance of Rigid Sphere Against a Deformable Flat-Effect of Strain HardnessV.C. Sathish Gandhi, S. Ramesh, R. KumaravelanProblem statement: The present study considers an elastic-plastic contact analysis of a rigid sphere with a deformable flat (Rigid Sphere-model) using finite element analysis. The effect of tangent modulus on the contact behavior of a no adhesive frictionless elastic-plastic contact was analyzed using commercial finite element software ANSYS. Approach: Different materials, in terms of the ratio of Young's modulus to … …American Journal of Applied Sciences, Vol. 9, Issue 2 · 26 Dec 2011 · 8,226 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Critical Review of Climate Change Induced Psychosocial Impacts and Options for Strengthening Social Support SystemsParnali Dhar Chowdhury, C. Emdad Haque, Graham SmithProblem statement: Climate change and its associated manifestations have only recently emerged as significant threats to health faced by Canadians. The emergence of these threats has meant that Canadians are faced with increasing health-related concerns that are more frequent, more severe and occurring in communities where they have not been previously experienced. The compounding effects of change in weather patterns … …American Journal of Environmental Sciences, Vol. 7, Issue 4 · 26 Aug 2011 · 7,428 accessesView PDFCite
Research ArticleOpen accessIn the abstractOccupational Stress and Family Difficulties of Working WomenMaryam Zarra-Nezhad, Ali Moazami-Goodarzi, Leila Hasannejad, Khadijeh RoushaniProblem statement: Work and family are the two most important aspects in women’s lives. Balancing work and family roles has become a key personal and family issue for many societies. There are many facets in working mother’s lives that subject to stresses. They deal with home and family issues as well as job stress on a daily basis. Imbalance between … …Current Research in Psychology, Vol. 1, Issue 2 · 31 Dec 2010 · 16,116 accessesView PDFCite
Research ArticleOpen accessIn the abstractFlexural Behaviors of Damaged Full-Scale Highway Bridge Girder Strengthened by External Post TensionSayan Sirimontree, Jaruek TeerawongProblem statement: Prestressed Concrete (PC) I section girder with Reinforced Concrete (RC) topping slab has been widely applied to long span bridge girders for several years. A bridge girder is subjected to severe conditions caused by an aggressive environment and overloading. A crack can be initiated and propagate when the tensile stress exceeds the tensile strength of concrete due to … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 8,675 accessesView PDFCite