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Research ArticleOpen accessIn the abstractFinite Element Analysis of Composite Hardened Walls Subjected to Blast LoadsGirum S. UrgessaProblem statement: There is currently no standard design guideline to determine the number of composites needed to retrofit masonry walls in order to withstand a given explosion. Past design approaches were mainly based on simplified single-degree-of-freedom analysis. A finite element analysis was conducted for concrete masonry walls hardened with composites and subjected to short duration blast loads. Approach: The analysis … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,276 accessesView PDFCite
Research ArticleOpen accessIn the abstractCompetition Effects of Date of Sowing and Nutsedge Removal Time on Yield and Yield Contributing Characters of Tef [Eragrostis tef (Zucc.) Trotter]Abdul Shukor Juraimi, Mahfuza Begum, Ahmed Mohammed Sherif, Anuar Abdul RahimProblem statement: Tef [Eragrostis tef (Zucc.) Trotter] is a C4 grass, most important indigenous cereal crop in Ethiopia. The average grain yield of this crop is low; averaging <0.8 Mg ha-1. Under appropriate cultural practices such as the right sowing date, sowing rate, weeding time and fertilizer application, tef could produce grain yields of 2200-4599 kg ha-1. A delay in … …American Journal of Applied Sciences, Vol. 6, Issue 10 · 31 Oct 2009 · 7,142 accessesView PDFCite
Research ArticleOpen accessIn the abstractSalicylic Acid Protects Nitrate Reductase Activity, Growth and Proline in Amaranth and Tomato Plants during Water DeficitC. E. Umebese, T. O. Olatimilehin, T. A. OgunsusiProblem statement: Seedlings of Amaranthus hybridus cv. NHAC-3 (large green, amaranth) and Lycopersicum esculentum cv. Roma (tomato) were subjected to 7 days water stress at Early Vegetative (EV), Late Vegetative (LV), Early Flowering (EF) and Late Flowering (LF) stages of growth to study the impact on leaf water potential (ψw), Nitrate Reductase Activity (NRA), growth (plant height, shoot and root … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 9,569 accessesView PDFCite
Research ArticleOpen accessIn the abstractChanges in Flower Development, Chlorophyll Mutation and Alteration in Plant Morphology of Curcuma alismatifolia by Gamma IrradiationThohirah Lee Abdullah, Johari Endan, B. Mohd NazirProblem statement: Curcuma alismatifolia Gagnep., commonly known as 'Thai tulip' or pathumma is a member of the family Zingiberaceae. This herbaceous perennial which can be grown from rhizomes have a great potential for use as a cut flower, flowering potted plant and as a garden plant for tropical landscaping. Unlike other bulbous floral crops, research on C. alismatifolia using gamma … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 8,444 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of the 2004 'Boxing Day' Tsunami on Water Properties and Currents in the Bay of BengalNaveendra Reddy, Than Aung, Awnesh SinghProblem statement: Variation of temperature, salinity and geostrophic current in the Bay of Bengal due to the 2004 Boxing Day tsunami was investigated in this project using ARGO float and absolute dynamic height topography data. This was done to determine the effect of the tsunami on the water properties in the bay. Approach: The study area was between latitudes 5º … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,389 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of Blood Turbulent Flow in Carotid Artery Including the Effects of Mural Thrombosis Using Finite Element ModelingM. Arab-Ghanbari, M. M. Khani, A. Arefmanesh, F. Tabatabai-GhomsheArterial thrombosis is an extremely significant health problem. As a result of numerous factors involved in such problem, describing the role of hemodynamics in thrombogenesis has been asserted to be one of the most demanding and complicated challenges in biomechanics. An axisymmetric model considering fluid-structure interactions (FSI) was introduced and numerically solved for an artery with a thrombosis to perform … …American Journal of Applied Sciences, Vol. 6, Issue 2 · 28 Feb 2009 · 7,411 accessesView PDFCite
Research ArticleOpen accessIn the abstractClosed Die Forging Geometrical Parameters Optimization for Al-MMCM. Jolgaf, S.B. Sulaiman, M.K.A Ariffin, A.A. FaiezaDemand for lighter and stiffer products has been increasing in the last few years especially in automobile manufacturing. The closed die forging process of Metal Matrix Material (MMC) is presented as possible solution, since it produces parts with good mechanical properties and lighter weight. A computational modeling of closed die forging process using finite element method and optimization techniques makes … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 1 · 31 Mar 2008 · 8,482 accessesView PDFCite
Research ArticleOpen accessIn the abstractGamma Radiosensitivity Study on Long Bean (Vigna sesquipedalis)Ellyfa Kon, Osumanu Haruna Ahmed, Shaharudin Saamin, Nik Muhamad Ab. MajidThis study was conducted to determine the LD50 and effect of gamma ray on germination percentage, plant height, survival percentage, root length, root dry weight and shoot dry weight of seedlings derived from seeds of long bean (Vigna sesquipedalis). Seeds of this crop were treated with 300, 400, 500, 600 and 800 Gy gamma rays at Malaysian Institute of Nuclear … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 8,601 accessesView PDFCite
Research ArticleOpen accessIn the abstractDecline of Betula ermanii with Special Reference to Ozone Concentration at Mt. Mae-Shirane, Oku-Nikko, JapanY. W. Feng, N. Ohta, H. ShimizuDuring June to October 2000 and 2001 we measured the height, Diameter at Breast Height (DBH) and stand density of Betula ermanii trees at Mt. Mae-Shirane, Japan and the ozone concentration there to explore the relationship between ozone concentration and the decline of B. ermanii trees on the mountain. Height, DBH and stem volume were lower on the southeast-facing slope … …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 7,059 accessesView PDFCite
Research ArticleOpen accessIn the abstractRock Fall Hazard Zonation in Haraz HighwayHadi Jarahi, Sedigheh SeifilalehTakavar and Ebtehaj tunnels as part of Haraz highway are located in southwestern Damavand mount. Statistics show enormous financial and human damages in this route because of rockfall. Geological and topographical conditions, caused to the intensity of rockfall, because most of heights in this area covered by Damavand Trachyandesitic lava flows. In this study Rockfall Analyst (RA) software used to … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 2 · 3 May 2016 · 7,768 accessesView PDFCite