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Research ArticleOpen accessIn the abstractImpact of Takeoff Angle of Bucket Type Energy Dissipater on Scour HoleNor Azlina Alias, Thamer Ahmed Mohamed, Abdul Halim Ghazali, Megat Johari Megat Mohd. NoorScour holes formed downstream of bucket type energy dissipater may affect the safety and stability of the structure. In this study, a physical model is employed to study the impact of takeoff angle of bucket type energy dissipater on the scour hole. The area of longitudinal profile of the scour hole is used to evaluate the seriousness of the scour … …American Journal of Applied Sciences, Vol. 5, Issue 2 · 28 Feb 2008 · 8,380 accessesView PDFCite
Research ArticleOpen accessIn the abstractRemoval of Dye from Textile Wastewater Using Plant Oils Under Different pH and Temperature ConditionsA.S. Mahmoud, Abdel E. Ghaly, M.S. BrooksThe effectiveness of five plant oils (cottonseed, olive, canola sunflower and used cooking oil) for the removal of dye from textile wastewater was evaluated. The study revealed that the dye removal efficiency increased as the temperature was increased. Under low pH, both the oil and dye split into two components each. Neither one of the oil components joined with either … …American Journal of Environmental Sciences, Vol. 3, Issue 4 · 31 Dec 2007 · 8,351 accessesView PDFCite
Research ArticleOpen accessIn the abstractDecolorization of Remazol Brilliant Blue Dye Effluent by Advanced Photo Oxidation Process (H2O2/UV system)A. S. Mahmoud, M. S. Brooks, A E. GhalyAdvanced photo oxidation processes hold great promise for the improved treatment of textile dye effluent. In this study, the effectiveness of a H2O2/UV system for the decolorization of remazol brilliant blue effluent was investigated by examining the optimum conditions for dye removal in two reactors (coil and conventional). The results showed that the coil reactor had a higher temperature profile … …American Journal of Applied Sciences, Vol. 4, Issue 12 · 31 Dec 2007 · 8,007 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Utilization of Peat, Lignite and Industrial Wastes in the Production of Mineral-Organic FertilizersKrystyna Hoffmann, Józef HoffmannThe results of chemical analyses of the composition of peat, lignite, turkey droppings and the potato industry effluent are presented. The results indicate that the substances can be used in mineral-organic fertilizer recipes. Although lignite and peat do not contain assimilable nutrients, from the ecology and pedology point of view they are valuable components of mineral-organic fertilizers. In order to … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 4 · 31 Dec 2007 · 7,481 accessesView PDFCite
Research ArticleOpen accessIn the abstractDevelopment of Criteria for Slab Compaction of Laboratory Roller Compactor (Turamesin)R. Muniandy, F.M. Jakarni, S. Hassim, A.R. MahmudLaboratory experiments should simulate to a high degree the conditions in the field, especially in term of compaction procedures. Presently available laboratory compaction methods do not seem to be able to produce specimens that can truly represent the mixtures as it exists in the field, especially for Stone Mastic Asphalt (SMA) mixtures. SMA is highly dependent on the method of … …American Journal of Applied Sciences, Vol. 4, Issue 11 · 30 Nov 2007 · 7,118 accessesView PDFCite
Research ArticleOpen accessIn the abstractImmobilization of Lipase from Candida Rugosa on Palm-Based Polyurethane Foam as a Support MaterialRoila Awang, Mohd Rafaei Ghazuli, Mahiran BasriLipase from Candida rugosa was immobilized onto palm-based polyurethane foam (PU), which the polymer was pre-soaked in co-immobilized agent. The activities of PU-immobilized lipase were tested by the esterification reaction of oleic acid and oleyl alcohol in hexane. The PU-immobilized lipase was then characterized in term of its thermal, operational and storage stability. The optimum temperature for native and PU-immobilized … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 3 · 30 Sep 2007 · 7,478 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Hydroponic System for Purification of Anaerobically Treated Dairy Manure and Production of Wheat as a Nutritional Forage CropA. E. Ghaly, H.A. Farag, M. VermaA hydroponic system was developed and used for purification of an anaerobically treated dairy manure and production of forage crops. The effect of light duration, seeding rate and wastewater application rate on the crop yield and pollution potential reduction were studied. The results indicated that a wheat forage crop can be produced in 21 days from germination to harvest in … …American Journal of Agricultural and Biological Sciences, Vol. 2, Issue 3 · 30 Sep 2007 · 8,075 accessesView PDFCite
Research ArticleOpen accessIn the abstractThermodynamic Profile of Some Heavy Metal Ions Adsorption Onto Biomaterial SurfacesMedhat A. ShakerThe adsorption of Co2+, Zn2+, Pb2+ and Hg2+ onto dried non-living biomass (NB) of different Pseudomonas strains has been investigated in detail. Maximum adsorption of these cations is achieved at optimum pH values from 3.5 to 4.5 to avoid hydrolysis, polymerization and precipitation of metal cations in the treatment solutions. The experimental data obtained at different temperatures were fitted to … …American Journal of Applied Sciences, Vol. 4, Issue 8 · 31 Aug 2007 · 6,877 accessesView PDFCite
Research ArticleOpen accessIn the abstractPotential of Agarose for Biosorption of Cu(II) In Aqueous SystemAnurag Pandey, Debabrata Bera, Anupam Shukla, Lalitagauri RayThe ability of agarose gel as an adsorbent for Cu(II) ions in aqueous solution was studied. The experiments were done as batch processes. Batch kinetics and isotherm studies were carried out under varying experimental conditions of contact time, Cu(II) ion concentration, adsorbent dose, temperature and pH. Adsorption equilibrium of agarose gel was reached within 4 h for agarose gel when … …American Journal of Biochemistry and Biotechnology, Vol. 3, Issue 2 · 30 Jun 2007 · 6,829 accessesView PDFCite
Research ArticleOpen accessIn the abstractNumerical Analysis of Pulsatile Blood Flow in a Stented Human Coronary Artery with a Flow DividerVahab Dehlaghi, Mohammad Tafazoli Shadpoor, Siamak NajarianShear stress is known to play a central role in restenosis formation and is sensitive to stent geometry. Local flow alterations created by a different stents without and with flow divider were studied to compare the hemodynamic effects of Stent design properties on restenosis in stented human coronary artery. Blood pressure and shear stress values were computed in three different … …American Journal of Applied Sciences, Vol. 4, Issue 6 · 30 Jun 2007 · 6,521 accessesView PDFCite