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272 results for “Tropical”
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Research ArticleOpen accessIn the abstractMixed Species Grazing of Cattle and Goats on Gastrointestinal Infections of Haemonchus ContortusRenita Marshall, Sebhatu Gebrelul, Lisa Gray, Yemane GhebreiyessusAt the present time, the meat of goat is the fastest growing class of livestock in the U.S.A. Due to the sub-tropical climate in the South Eastern region of the US, internal parasites pose a major constraint to the industry. The blood-feeding nematode, Haemonchus contortus results in production losses and even death in untreated animals. The control of H. contortus … …American Journal of Animal and Veterinary Sciences, Vol. 7, Issue 2 · 4 Jul 2012 · 8,528 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Diatom Stratigraphy of Rawapening Lake, Implying Eutrophication HistoryTri Retnaningsih Soeprobowati, Suwarno Hadisusanto, Peter Gell, Atun ZawadskiProblem statement: The use of diatoms to reconstruct past ecological conditions in lakes is well established. Diatoms are microscopic algae that forms siliceous frustules which allow them to preserve well in sediments. Rawapening Lake is one of 15 Indonesian lakes identified as 2010-2014 National Priority Lakes. Naturally, Rawapening is a tectono-volcanic lake. In the early 1900s, the sole outlet of … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 15 Jun 2012 · 7,716 accessesView PDFCite
Research ArticleOpen accessIn the abstractTiO2 Nanoparticles-Coated Polypropylene Copolymer as Photocatalyst on Methylene Blue Photodegradation under Solar ExposureHasniah Aliah, Mahardika Prasetya Aji, Masturi et al.Problem statement: Pollutions of water bodies by dye wastes from textile industries and other sources have become critical consideration. A photocatalytic technique using semiconductor materials such as Titanium Dioxide (TiO2) activated by lights has been considered as one economical method to solve this problem. Approach: We attached titanium dioxide on the surface of polymer grains as photocatalyc agents using a … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 29 May 2012 · 7,859 accessesView PDFCite
Research ArticleOpen accessIn the abstractSchedule Planning for Repairing Power Supply SystemKuo-Wei Lin, Chein-Jen KangProblem statement: Taiwan is located in the tropical ocean areas. The strong typhoon in summer often causes the collapse of electric transmission towers and results in power outages that seriously affect people’s lives and industrial production. Approach: In light of this situation, this study aims to employ project management techniques of Theory of Constraints (TOC) to develop a practical TOC … …American Journal of Applied Sciences, Vol. 9, Issue 6 · 24 Mar 2012 · 7,172 accessesView PDFCite
Research ArticleOpen accessIn the abstractLevels of Dichlorodiphenyltrichloroethane and its Metabolites in the Blood of Agrochemicals RetailersAnthony J. Hotton, Jeoffrey T. Barminas, Sunday A. OsemeahonProblem statement: In tropical countries like Nigeria, the storage, sales and handling of pesticide by agrochemical retailers in indoor stores located in open markets and residential areas were fraught with problem of undesirable side effect. Serum levels of 1, 1, 1-trichloro-2, 2-di (4-chlorophenyl) ethane (DDT) and its metabolite were measured among agrochemicals retailers in Taraba, Nigeria. Approach: Blood samples from … …American Journal of Environmental Sciences, Vol. 8, Issue 2 · 22 Mar 2012 · 7,451 accessesView PDFCite
Research ArticleOpen accessIn the abstractValidation of MIKE 11 Model Simulated Data for Biochemical and Chemical Oxygen Demands TransportMahdieh Eisakhani, Md. Pauzi Abdullah, Othman Abd Karim, Amirhossein MalakahmadProblem statement: The aim of the study was to model the discharge, biochemical and chemical oxygen demands (BOD and COD) loads in each cross section of Bertam River in Cameron Highlands, Malaysia. Cameron Highlands form the headwater catchment for two major rivers of the lowlands; Pahang River and Perak River. On the other hand, Cameron Highlands is undergoing rapid development … …American Journal of Applied Sciences, Vol. 9, Issue 3 · 27 Jan 2012 · 7,686 accessesView PDFCite
Research ArticleOpen accessIn the abstractAboveground Biomass Production of Rhizophora apiculata Blume in Sarawak Mangrove ForestI.A. Chandra, G. Seca, M.K. Abu HenaProblem statement: Mangrove forests are found in tropical and subtropical coastal tidal regions. Rhizophora apiculata Blume is one of the most important species in mangrove forest. It is also one of the commercial mangrove timber species in Asia-Pacific region which dominates large areas of mangrove in this region. In order to understand forest ecosystem characteristics and to establish the proper … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 4 · 21 Oct 2011 · 10,601 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamical Model for Determining Human Susceptibility to Dengue FeverSurapol Naowarat, Thanon Korkiatsakul, I. Ming TangProblem statement: Mathematical models are a useful tool for understanding and describing the transmission of diseases such as dengue fever, one of the most prevalently emerging diseases common to tropical and subtropical areas throughout South East Asia. By taking into account human susceptibility to disease, the dynamics of a dengue disease model is proposed. Approach: Using standard methods for analyzing … …American Journal of Applied Sciences, Vol. 8, Issue 11 · 28 Sep 2011 · 7,735 accessesView PDFCite
Research ArticleOpen accessIn the abstractComparison of Carbon and Selected Macronutrients in Forest-Floor Litter of Rehabilitated and Secondary ForestsMelvin Ku Kin Kin, Japar Sidik Bujang, Osumanu Haruna Ahmed et al.Problem statement: Forest rehabilitation with human assistance by species selection and management shortens the time needed to rehabilitate degraded land as compared to natural succession. Empirical data on litter nutrient contents of tropical rain forests in Southeast Asia have been established, however it is limited to rehabilitated degraded lands. The objective of this study was to determine contents of carbon … …American Journal of Applied Sciences, Vol. 8, Issue 10 · 20 Aug 2011 · 7,740 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnti-Metalloproteinase-9 Activities of Selected Indonesian Zingiberaceae Rhizome Extracts in Lipopolysaccharide-Induced Human Vascular Endothelial Cells In VitroYantiProblem statement: Atherosclerosis is associated with chronic inflammation triggered by bacterial infection that activates the breakdown of extracellular matrix protein by matrix Metalloproteinases (MMPs). Zingiberaceae, a group of tropical food crops grown in Indonesia and other Southeast Asia regions, has been traditionally used for food coloring, seasoning, culinary and medicinal purposes. However, its efficacy as natural vascular protection has not … …American Journal of Biochemistry and Biotechnology, Vol. 7, Issue 1 · 27 May 2011 · 7,869 accessesView PDFCite