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Research ArticleOpen accessIn the abstractApplication of Gamma irradiation in treatment of Waste Activated Sludge to Obtain Class a BiosolidsMohammed I. AL-Ghonaiem, Abdelnasser Salah Shebl Ibrahim, Ali Abdullah Al-SalamahProblem statement: The main objective of the current study was investigation of the possible application of Gamma irradiation for treatment of the activated sludge generated wastewater treatment stations, to achieve the standard requirements in term of pathogens content. Approach: Activated sludge samples were collected from Riyadh wastewater plant and analyzed quantitatively for the presence of important bacterial parameters including fecal … …American Journal of Environmental Sciences, Vol. 6, Issue 6 · 31 Dec 2010 · 7,009 accessesView PDFCite
Research ArticleOpen accessIn the abstractInfluences of Short Discrete Fibers in High Strength Concrete with Very Coarse SandMahyuddin Ramli, Kwan Wai HoeProblem statement: High Strength Concrete (HSC) normally content high cementitous amount and low water binder ratio. However, these would cause substantial volume changes to the concrete and therefore affected the strength development. In addition, the brittleness of HSC was increased when silica fume used as partial cement replacement to achieve high strength. Approach: This study discussed the effects of incorporated … …American Journal of Applied Sciences, Vol. 7, Issue 12 · 31 Dec 2010 · 7,817 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimization of Mix Proportion of High Performance Mortar for Structural ApplicationsCheah Chee Ban, Mahyuddin RamliProblem statement: Mortar mix is a major construction material in fabrication of ferrocement structural elements. However, there have been scarce amount of technical data available on suitable mix proportion to achieve structural grade mortar with specific strength requirement and adequate level of workability for proper placement into construction formwork. Moreover, current practice in ferrocement construction work which uses mortar mix … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 4 · 5 Nov 2010 · 8,819 accessesView PDFCite
Research ArticleOpen accessIn the abstractOptimizing Coagulation Process for Low to High Turbidity Waters Using Aluminum and Iron SaltsAkbar Baghvand, Ali Daryabeigi Zand, Nasser Mehrdadi, Abdolreza KarbassiProblem statement: Turbid waters, containing colloidal particles, are normally treated by coagulation-flocculation followed by clarification. Ferric chloride and alum, which are the most common types of coagulants in water treatment plants of Iran as well as many other countries, were investigated with the aim of determining their capabilities to reduce turbidity of drinking water. Turbidity was added as kaolin. Optimization … …American Journal of Environmental Sciences, Vol. 6, Issue 5 · 31 Oct 2010 · 21,088 accessesView PDFCite
Research ArticleOpen accessIn the abstractCompetencies Influencing Extension Workers’ Job Performance in Relation to the Good Agricultural Practices in MalaysiaNeda Tiraieyari, Khairuddin Idris, Jegak Uli, Azimi HamzahProblem statement: The bottom line in agricultural trade is that manufacturers are demanding agricultural products that are produced in a sustainable way and with assurance that they are truly conforming to the standards of Good Agriculture Practice. Towards this objective, attention has been given on sustainable agricultural productions in Malaysia. This study is an attempt to investigate job performance of … …American Journal of Applied Sciences, Vol. 7, Issue 10 · 31 Oct 2010 · 8,561 accessesView PDFCite
Research ArticleOpen accessIn the abstractAntioxidant Activity of Leaves of Calophyllum rubiginosumMuhammad Taher, Nissad Attoumani, Deny Susanti et al.Problem statement: Calophyllum species have been used in traditional medicine for their therapeutic values for many years. This use was explained by several previous studies where antimicrobial, antifungal, anti-HIV and anti-cancer and antioxidant compounds were isolated from several Calophyllum species. Approach: The leaves were extracted with n-hexane (hexane), dichloromethane (DCM) and methanol using soxhlet apparatus. Total phenolic contents of each … …American Journal of Applied Sciences, Vol. 7, Issue 10 · 31 Oct 2010 · 7,630 accessesView PDFCite
Research ArticleOpen accessIn the abstractCharacterization of Epoxidized and Non-Epoxidized Fatty Diethanolamides by High Performance Liquid Chromatography and Gas ChromatographyChoy Sin Lee, Song Cang LeeProblem statement: This study was carried out for the characterization of epoxidized and non-epoxidized fatty diethanolamides by High Performance Liquid Chromatography (HPLC) and Gas Chromatography (GC). Approach: The fatty diethanolamides were synthesized by reacting 40% (w/w) of Epoxidized Palm Olein (EPOo) with 60% (w/w) Refined Bleached Deodorized Plam Kernel Olein (RBDPKOo) with Diethanolamine (DEA) at 110°C for 5 h. Results: … …American Journal of Pharmacology and Toxicology, Vol. 5, Issue 3 · 30 Sep 2010 · 7,454 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Practices of Contract Farming Among Fresh Fruit and Vegetable Suppliers in MalaysiaNorsida Man, Nolila Mohd NawiProblem statement: Contract Farming (CF) concept is an agreement between buyers and producers, where by producers agree to produce and supply agriculture products according to the agreed quantity, quality, variety, grade, type of packaging and time of delivery. The two parties will mutually agree on the pricing of product, either on a contract price or a market price. Therefore, CF … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 9,996 accessesView PDFCite
Research ArticleOpen accessIn the abstractA New Collaborative Pattern between Landscape Architects and Urban Designers in Environmental DesignMostafa Behzadfar, Mohsen Faizi, Sina Razzaghi Asl, Behzad Haji BeiklouProblem statement: Nowadays professions such as architecture, landscape architecture and urban design are playing a unique role in environmental design process. Meanwhile architecture is being separated from two other majors: landscape architecture and urban design by paying so much attention to constructing buildings. Landscape architecture and urban design have parallel subjects and goals and both have the intention to improve … …American Journal of Environmental Sciences, Vol. 6, Issue 4 · 31 Aug 2010 · 7,355 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproving Jordan's Law towards Sustainable Solid and Hazardous Waste Management: Lessons from USA's Environmental LawsNaill M. MomaniProblem statement: Improper handling of solid and hazardous waste will impact the living standards of a community in normal days and when disasters occur such misuse could disperse response and recovery activities due to natural or man-made disasters. Approach: This study discussed the Jordanian solid and hazardous waste management policies in light of USA equivalent ones with the intention to … …American Journal of Environmental Sciences, Vol. 6, Issue 4 · 31 Aug 2010 · 6,614 accessesView PDFCite