Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=54122#.VO2K2CzQrzE Author(s)  F. I. El-Zahraa 1 , G. T. Abdel-Jaber 1 , M. I. Khashaba 2 , W. Y. Ali 3   Affiliation(s) 1 Faculty of Engineering, South Valley University, Qena, Egypt . 2 Faculty of Engineering, Minia University, Minya, Egypt . 3 Faculty of Engineering, Taif University, Taif, KSA . ABSTRACT The wide use of epoxy composites as bearing materials in electronic appliances necessitates studying their frictional behaviour under the influence of magnetic field. Experiments were carried out to investigate the effect of magnetic field on the friction coefficient displayed by the scratch of epoxy composites filled by iron, copper and aluminium particles at different concentrations. It was observed that, for epoxy filled by the metallic fillers (iron, copper and aluminium), under the effect of the magnetic field, friction coefficient showed relativ...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53266#.VLiDt8nQrzE Author(s)    Nour T. Abdel-Ghani 1 , Ghadir A. El-Chaghaby 2* , Enas Mohamed Zahran 3   Affiliation(s) 1 Chemistry Department, Faculty of science, Cairo University, Cairo, Egypt . 2 RCFF, Agricultural Research Center, Giza, Egypt . 3 Holding Company for Water and Wastewater, Greater Cairo Water Company, Cairo, Egypt . ABSTRACT The adsorption of aluminium(III) and iron(III) ions from their single and binary systems, by RHAC was investigated in a batch system. The activated carbon prepared from rice hulls was characterized by scanning electron microscopy and Fourier transformation infrared techniques. Batch adsorption experiments were performed under different operating conditions including pH (2 - 5), adsorbent dosage (0.5 - 2.0 g/l), initial ion concentration (5 - 100 mg/l), and contact time (30 - 240 min). The equilibrium time f...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52791#.VKNkV8nQrzE Author(s)   Milka M. Vidović * , Ivana S. Trajković , Saša S. Rogan , Vladimir M. Petrović , Sanja Z. Jovanić Affiliation(s) Department of Ecology and Technoeconomics, The Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Belgrade, Serbia . ABSTRACT Presence of iron and manganese in water not only affects the organoleptic properties of water, but also can cause a number of problems in drinking water treatments. Their removal in drinking water preparation processes becomes more complicated in the presence of hydrogen sulfide and ammonia in water. There are certain commercialized produ...

Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=49357#.VI5RGMnQrzE Author(s) Binay Bhusan Panda , Srigopal Sharma , Pravat Kumar Mohapatra , Avijit Das Affiliation(s) Institute of Life Sciences, Nalco Square, Bhubaneswar, India . Division of Crop Physiology and Biochemistry, Central Rice Research Institute, Cuttack, India . School of Life Sciences, Sambalpur University, Sambalpur, India . Division of Crop Physiology and Biochemistry, Central Rice Research Institute, Cuttack, India . ABSTRACT Effect of Fe nutrition on Fe acquisition, aconitase enzyme activity and assimilation of the element in ferritin protein was studied in two indica rice cultivars viz. Sharbati and Lalat ...