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40 articles for “concentrates”
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Research ArticleOpen accessIn the abstractEffect of Calcium Supplementation on Growth, Nutrient Digestibility and Fecal Lactobacilli in Dairy CalvesC. Yuangklang, C. Wachirapakorn, H.E. Mohamed et al.Problem statement: Based on earlier studies in veal calves and rats, the hypothesis tested was that high calcium intakes by ruminating dairy calves reduce fat digestibility, but do not affect growth performance due to enhanced colonization of the intestine with lactobacilli. Approach: In dairy calves that were fed on a combination of milk replacer, concentrate on grass hay, the effects … …American Journal of Animal and Veterinary Sciences, Vol. 5, Issue 2 · 30 Jun 2010 · 8,247 accessesView PDFCite
Research ArticleOpen accessIn the abstractSimulation of Wind Field in Tehran Using Hybrid Diagnostic and Prognostic ModelsM. Shafie-Pour, Y. Rashidi, M. ArdestaniThis article concentrates on Wind Field Simulation in a mega city such as Tehran which is home to nearly 10 million inhabitants. The necessity of having a comprehensive knowledge about the wind field in a certain zone is significant for different reasons; the most important of all would be surveying on the emission and dispersion of pollutants. The wind models … …American Journal of Environmental Sciences, Vol. 4, Issue 5 · 31 Oct 2008 · 6,683 accessesView PDFCite
Research ArticleOpen accessIn the abstractShort-Term and Medium-Term Load Forecasting for Jordan's Power SystemI. Badran, H. El-Zayyat, G. HalasaSeveral electric power companies are now forecasting electric loads based on conventional methods. However, since the relationship between loads and factors influencing these loads is nonlinear, it is difficult to identify its nonlinearity by using conventional methods. Most of papers deal with 24-h-ahead load forecasting or next day peak load forecasting. These methods forecast the demand power by using forecasted … …American Journal of Applied Sciences, Vol. 5, Issue 7 · 31 Jul 2008 · 7,081 accessesView PDFCite
Research ArticleOpen accessIn the abstractPitch Angle Control of Variable Speed Wind TurbineYousif El-TousThe aim of this study is to design a simple controller to maximize the extracted energy of wind turbines. In this study the pitch angle control of variable speed wind turbine is investigated. In particular, it concentrates on the extraction of maximum available energy, reduction of torque and output power variations, which gives stresses in the gearbox and mechanical structure. … …American Journal of Engineering and Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2008 · 8,735 accessesView PDFCite
Research ArticleOpen accessIn the abstractDynamic Modelling of an Industrial Smelter Furnace and Converter Off-gas SystemHelen Shang, Megan Dillabough, Phillip Nelson, Bryan SaltIn smelters, metal ores or concentrates are smelted to reduce a metal oxide to a metal through a series of reactions and processes. In a smelting process, a large amount of off-gas emissions are often generated, which can cause serious environmental and plant hygiene problems if not properly treated. Off-gas systems extract and treat the off-gas emissions, and ensure that … …American Journal of Environmental Sciences, Vol. 4, Issue 1 · 29 Feb 2008 · 7,153 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnonymous and Non-Repudiation E-Payment ProtocolSattar J Aboud, Mohammed Ahmed AL-FayoumiThere are many proposals offer anonymous and non-repudiation e-payment protocols. But they have the drawbacks that the anonymity can be misused by fraudulent to perform a perfect crimes. Currently, the hot research concentrates on the accepting of e-payment protocols where the anonymity of the coins is cancelable via a trusted authority in the case of criminal entities. In the article … …American Journal of Applied Sciences, Vol. 4, Issue 8 · 31 Aug 2007 · 7,274 accessesView PDFCite
Research ArticleOpen accessIn the abstractRelationship Between Shear Strength and Soil Water Characteristic Curve of an Unsaturated Granitic Residual SoilThamer Ahmed Mohamed, Faisal Hj. Ali, S. Hashim, Bujang B.K. HuatShear strength parameters are crucial for stability analyses of slopes against slope failures and landslides. The three shear strength parameters that are required to define a failure envelope of an unsaturated soil are c’ (apparent cohesion), Φ’ (effective angle of friction) and Φb (shear strength change with change in matric suction). A soil-water characteristic curve (SWCC) that relates the water … …American Journal of Environmental Sciences, Vol. 2, Issue 4 · 31 Dec 2006 · 7,350 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Impact of Applying IT and E-Learning in Economic Information SystemsJihad A.A.Abu Al SondosThe purpose of this study was to investigate the impact of using the E-learning approach as well as IT technologies in the teaching process of Economics Information System (EIS) course to graduate students. Also, this study concentrates on two trends, the first one related to the befits of using E-learning approach in teaching EIS. The benefits of this approach are: … …American Journal of Applied Sciences, Vol. 3, Issue 2 · 28 Feb 2006 · 6,712 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation and Beneficiation of Feldspar from Arkosic Sandstone in South Jordan for Application in the Ceramic IndustryMousa GougazehThe main purpose of the present study was to investigate the beneficiation and upgrading processes of a Jordanian feldspar ores to be finally implemented in the ceramic industry. The experimental work was conducted to evaluate the role of particle size distribution, chemical composition, mineral content and the magnetic impurities (Fe2O3 +TiO2 contents). The beneficiation of the 500-45 μm fractions, which … …American Journal of Applied Sciences, Vol. 3, Issue 1 · 31 Jan 2006 · 6,981 accessesView PDFCite
Research ArticleOpen accessIn the abstractDistribution Network Planning and Design Using Branch and Bound MethodsJalal AbdallahThis study presents implementation of the bound and branch methods as an optimization mathematical device for distribution network planning. A development technology concentrates on minimizing the total costs and provides extended opportunities for improvement of network operation, from the initial planning stage. The study illustrate the mathematical and the algorithm of the branch and bound method with an example to … …American Journal of Applied Sciences, Vol. 2, Issue 3 · 31 Mar 2005 · 7,042 accessesView PDFCite