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Research ArticleOpen accessIn the keywordsTrends in Maximum Daily Rainfall in Marginal Desert Environment: Signs of Climate ChangeKhaldoun A. Al-Qudah, Abdullah A. SmadiProblem statement: Change in intense precipitation has been used as an indicator for anticipated climate change. The trend in maximum daily rainfall in 10 rainfall stations distributed in the north and north east of Jordan has been investigated. Based on mean annual rainfall and geographic location, rainfall stations were divided into subhumid, semi-arid and arid stations. Approach: The regression approach … …American Journal of Environmental Sciences, Vol. 7, Issue 4 · 14 Sep 2011 · 7,405 accessesView PDFCite
Research ArticleOpen accessIn the keywordsLab Tests for the Remediation of a PCE Polluted Site by Means of HRC ReactantMaria Chiara Zanetti, Silvia FioreThe injection of reactants is a remediation technology that may be applied both in the vadose zone and in groundwater. In this work a new reagent is examined for the remediation of the vadose zone and groundwater of an industrial site polluted by perchloroethylene (PCE). The tested reactant is the HRC (Hydrogen Release Compound, Regenesis, USA), a reducing agent which … …American Journal of Environmental Sciences, Vol. 3, Issue 3 · 30 Sep 2007 · 6,916 accessesView PDFCite
Research ArticleOpen accessIn the keywordsExtraction and Evaluation of Antibacterial Activity from Selected Flowering PlantsErlina Abdullah, Raha Ahmad Raus, Parveen JamalThe huge diversity of Malaysian flora has various chemical constituents that make them as outstanding natural product candidates for the treatment of infectious diseases. The screening practice for phytochemical compound in them is essential to explore more natural sources to replace synthetic antibiotics, which generally have side effects such as hypersensitivity, immune-suppression and allergic reactions. Antibacterial activities have been detected … …Current Research in Medicine, Vol. 3, Issue 1 · 20 Feb 2012 · 16,320 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAntimicrobial Activity of Ficus benghalensis and Ficus racemosa roots L.Krishna Murti, Upendra KumarProblems statement: To evaluate the antimicrobial activity of aqueous and ethanolic extracts of Ficus benghalensis and Ficus racemosa against three bacterial strains that is Staphylococcus aureus, Pseudomonas aeruginosa and Klebsiella pneumonia. Approach: The different concentrations viz. 25, 50 and 75 mg mL-1 of aqueous as well as ethanolic extract solutions of roots of Ficus benghalensis and Ficus racemosa were tested … …Current Research in Microbiology, Vol. 2, Issue 1 · 25 Jan 2012 · 14,492 accessesView PDFCite
Research ArticleOpen accessIn the keywordsPalynological Studies of Sediments from North Chioma-3 Well, Niger Delta and its Palaeoenvironmental InterpretationsOlugbenga Ebenezer Ige, Kalyani Datta, Kanak Sahai, Krishna Kumar RawatProblem statement: The Niger Delta Nigeria stands among the world's best-studies delta complexes but its superficial deposits are among the poorest known publicity. In spite of continuous oil prospecting production in the area, there is still a paucity of published information and data on the palynology of the Niger Delta. This study aimed at reconstructing the palaeoenvironments of the Niger … …American Journal of Applied Sciences, Vol. 8, Issue 12 · 10 Oct 2011 · 7,889 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMicrofacies and Sedimentary Environments of Gurpi and Pabdeh Formations in Southwest of IranMohammad BahramiProblem statement: The Upper Cretaceous Gurpi and lower Tertiary Pabdeh formations as units of folded Zagros Zone were studied in three different regions (Tang-e-Abolhiat, Tang-e-Zanjiran and Maharloo) in Fars Province, Iran. Approach: Gurpi formation consisted of thin to medium sized layers of gray marl and marlstone interbedded with thin layers of argillaceous limestone and shale. The dominant microfacies in this … …American Journal of Applied Sciences, Vol. 6, Issue 7 · 31 Jul 2009 · 7,738 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEstimation of C*-Integral for Radial Cracks in Annular Discs under Constant Angular Velocity and Internal PressureA.R. Gowhari-Anaraki, F. Djavanroodi, S. ShadlouThe finite element method has been used to predict the creep rupture parameter, C*-Integral for single and double-edge cracks in eight annular rotating discs under constant angular velocity with and without internal pressure. In this study, a new dimensionless creeping crack configuration factor, Q* has been introduced. Power law creeping finite element analyses have been performed and the results are … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,724 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEstimation of C*-Integral in Thin T-Sections Subjected to Projection and Remote Loading Base on Elastic Stress Concentration FactorA.R. Gowhari-Anaraki, F. Djavanroodi, S. ShadlouThe finite element method has been used to predict the creep rupture parameter, C*-Integral of flat T-section bar subjected to loaded projection and remote loading with a crack or crack-like flaw introduced in the fillet (i.e., high stress) region of the component. In this study, a new dimensionless creeping crack configuration factor, Q* has been introduced. Power low creeping finite … …American Journal of Applied Sciences, Vol. 5, Issue 5 · 31 May 2008 · 6,471 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAdaptive Control of Networked Systems in the Presence of Bounded DisturbancesA. H. Tahoun, Fang Hua-JingThe insertion of data network in the feedback adaptive control loops makes the analysis and design of networked control systems more complex than traditional control systems. This paper addresses the adaptive stabilization problem of linear time-invariant networked control systems when the measurements of the plant states are corrupted by bounded disturbances. The case of state feedback is treated in which … …Journal of Computer Science, Vol. 3, Issue 9 · 30 Sep 2007 · 6,542 accessesView PDFCite
Research ArticleOpen accessIn the keywordsClimate-Driven Productivity Responses and Implications for Genetic Adaptation and Breeding of Boreal Trees in KazakhstanZhadyra Baigazakova, Kuralay Mazarzhanova, Asset Satayev et al.Kazakhstan’s boreal and forest-steppe forests form the southern ecotonal edge of the West Siberian taiga, where relatively small changes in heat and moisture can trigger disproportionate impacts on tree growth, mortality, and regeneration. Although forests cover only ~4% of Kazakhstan, they provide critical ecosystem services: stabilizing hydrological regimes, buffering microclimates, protecting agricultural lands from wind and water erosion, and supporting … …OnLine Journal of Biological Sciences, Vol. 26, Issue 3 · 10 Aug 2026 · 711 accessesView PDFCite