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225 results for “composite”
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Research ArticleOpen accessIn the abstractShear Bond Strength of Four Cariostatic Tooth Colored Materials to Dentin of Permanent Premolar TeethE. Farrokhgisu, A. EskandarizadeProblem statement: The purpose of this study was to compare the shear bond strength of four cariostatic restorative materials to dentin of permanent teeth. Approach: Restorative materials which have used in the study were composite P60 (3M), conventional glass ionomer (Fuji II, GC), light cured glass ionomer (Vitremer, 3M), compomer (F2000, 3M) and flow compoglass (Vivadent). This study was in … …Current Research in Dentistry, Vol. 1, Issue 2 · 16 Jul 2011 · 8,090 accessesView PDFCite
Research ArticleOpen accessIn the abstractStatic and Dynamic Performance Improvement of Conventional Computer Numerical Control Machine Tool Bed with Hybrid Welded SteelS.S. Abuthakeer, P.V. Mohanram, G. MohankumarProblem statement: The advancements in machine tools to maximize the production by increasing spindle speeds have caused vibration in machine tools. The two functional requirements of machine tool bed for machine tools are high structural stiffness and high damping, which cannot be satisfied simultaneously if conventional metallic materials such as cast iron are employed. Hence there is a need to … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 11,479 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 · 8,670 accessesView PDFCite
Research ArticleOpen accessIn the abstractModeling and Analysis of MRR, EWR and Surface Roughness in EDM Milling through Response Surface MethodologyA.K.M. Asif Iqbal, Ahsan Ali KhanProblem statement: Electrical Discharge Machining (EDM) has grown over the last few decades from a novelty to a mainstream manufacturing process. Though, EDM process is very demanding but the mechanism of the process is complex and far from completely understood. It is difficult to establish a model that can accurately predict the performance by correlating the process parameters. The optimum … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 4 Nov 2010 · 9,606 accessesView PDFCite
Research ArticleOpen accessIn the abstractImpact Assessment and Utilization of Eastern RedcedarSalim Hiziroglu, Difei ZhangProblem statement: The fast invasion of eastern redcedar (Juniperus virginiana L.) has been considered a significant problem to the environment and rural communities. Approach: This study examined the adverse ecological and economic impacts of eastern redcedar and proposed the sustainable development of value-added panel products from such under-utilized invasive species. Also what economic sectors were mostly influenced was examined. Additionally … …American Journal of Applied Sciences, Vol. 7, Issue 8 · 31 Aug 2010 · 7,007 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis and Characterization of Silver/Polyvinilpirrolidone (Ag/PVP) Nanoparticles Using Gamma Irradiation TechniquesShawkat Salameh Gasaymeh, Shahidan Radiman, Lee Yook Heng et al.Problem statement: In this study, attempts had been made to synthesize silver (Ag)/Poly Vinylpyrolidone (PVP) nanoparticles by ionizing radiation and at the same time overcoming some of the disadvantages previously reported by other methods such as impurities, solvent toxicity, size and distribution control and difficulty in their preparation that limits their commercialization potential. Approach: The use of this alternative method … …American Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 9,962 accessesView PDFCite
Research ArticleOpen accessIn the abstractTreks'n Rapids: Identifying Motivational Factors for Adventure SportsKshitij Saxena, A.K. DeyProblem statement: Treks’n Rapids, a leading adventure sports and human resource enrichment company in India, wanted to identify main motivational factors of attraction towards adventure sports among youths of National Capital Region. Objective was to improve the effectiveness of integrated marketing communications strategy. Adventure sports are categorized into four classes: (1) mountain sports; (2) extreme sports like bungee jumping and … …American Journal of Economics and Business Administration, Vol. 2, Issue 2 · 30 Jun 2010 · 7,676 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Different Uniform Temperature with Thickness-Wise Linear Temperature Gradient on Interfacial Stresses of a Bi-Material AssemblyD. Sujan, Z. Oo, M. V.V. Murthy, K. N. SeetharamuProblem statement: The thermal mismatch induced interfacial stresses are one of the major reliability issues in electronic packaging and composite materials. Consequently an understanding of the nature of the interfacial stresses under different temperature conditions is essential in order to eliminate or reduce the risk of structural and functional failure. Approach: In this analysis, a model was proposed for the … …American Journal of Applied Sciences, Vol. 7, Issue 6 · 30 Jun 2010 · 7,068 accessesView PDFCite
Research ArticleOpen accessIn the abstractGamma Irradiation Synthesis and Influence the Optical and Thermal Properties of Cadmium Sulfide (CdS)/Poly (Vinyl Pyrolidone) NanocompositesShawkat Salameh Gasaymeh, Shahidan Radiman, Lee Yook Heng, Elias SaionProblem statement: Gamma irradiation has been successfully used to prepare a spherical cadmium sulfide CdS/Poly Vinylpyrolidone (PVP) quantum dots nanoparticles with enhancement of their optical band gap energy and thermal properties at room temperature and under ambient pressure. Sodium thiosulfate was used as a sulfur source in an aqueous solution. The formation of lower band gap energy of CdS/PVP nanoparticles … …American Journal of Applied Sciences, Vol. 7, Issue 4 · 30 Apr 2010 · 8,459 accessesView PDFCite
Research ArticleOpen accessIn the abstractA New Approach in Individual Tree Counting of Nyatoh (Palaquium spp.) Using an Airborne SpectroradiometerKamaruzaman JusoffProblem statement: In Malaysia inadequate data are available to make decisions regarding the sustainable management of Nyatoh (Palaquium spp.). Factual data and estimation of Nyatoh in the lowland dipterocarp forest resources are still lacking or, if available, are not complete, reliable or up to date. The collection and compilation of information and updating of existing data in near real time … …American Journal of Applied Sciences, Vol. 7, Issue 4 · 30 Apr 2010 · 7,955 accessesView PDFCite