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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 abstractFrequency Behavior of a Quartz Crystal Microbalance (Qcm) in Contact with Selected SolutionsZ. A. Talib, Z. Baba, S. Kurosawa et al.A device was constructed to monitor viscosity of solutions using fundamental frequency of 9 MHz and 10 MHz quartz crystal. Piezoelectric quartz crystals with gold electrodes were mounted by O-ring in between liquid flow cell. Only one side of the crystal was exposed to the solutions which were pumped through silicon tube by a peristaltic pump. The measured frequency shift … …American Journal of Applied Sciences, Vol. 3, Issue 5 · 31 May 2006 · 7,514 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 abstractImplementation of a Novel Concatenated FEC by RS and Irregular Turbo Codes on OFDM SystemsA. Shanmugam, A. R. Abdul Rajak, S. Vishwanath, R. UpendraCode Division Multiple Access (CDMA) performs well in a multi-cellular environment where a single frequency is used in all cells. Code Division Multiple Access (CDMA) has severe problems associated with multipath and Channel news. One possible problem is that the receiver may require a very large dynamic range in order to handle the large signal strength variation among users. Due … …American Journal of Applied Sciences, Vol. 2, Issue 5 · 31 May 2005 · 7,039 accessesView PDFCite
Research ArticleOpen accessIn the abstractModeling Water Quality in RiversLiren Yu, N. N.B. SalvadorThis study reports a PC software, used in a Windows-based environment, which was developed based on the first order reaction of Biological Oxygen Demand (BOD) and a modified Streeter and Phelps equation, in order to simulate and determine the variations of Dissolved Oxygen (DO) and of the BOD along with the studied river reaches. The software considers many impacts of … …American Journal of Applied Sciences, Vol. 2, Issue 4 · 30 Apr 2005 · 6,858 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
Research ArticleOpen accessIn the abstractDistribution of Biomicrofacies and Cement Types in the Changxing Formation (Upper Permian), Western Hubei-eastern Sichuan Provinces, South ChinaMutwakil Nafi, Xia WenchenThe Changxing formation is subdivided into lower, middle and upper parts. Four types of microfacies were recognized in the Changxing formation. They include SMF-3, SMF-6, SMF-7 and SMF-19. The Changxing Formation is composed of deep basin margin, platform margin and open restricted platform environments. The lower, middle and upper parts are dominated by deep basin margin facies, platform margin facies … …American Journal of Applied Sciences, Vol. 2, Issue 1 · 31 Jan 2005 · 7,000 accessesView PDFCite