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136 articles for “Conductivity”
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Research ArticleOpen accessIn the abstractApplied a Closed-Loop Oscillating Heat-Pipe Heat Exchanger to Increasing Oil Yield in Pyrolysis ProcessN. Panyoyai, T. Wongsiriamnuay, S. SangsrichanProblem statement: A Closed-Loop Oscillating Heat-Pipe (CLOHP) heat exchanger was a heat exchanger with one of the most promising conductivity capacities because of its higher cooling and condensing potential. Therefore, the aims of this study were to design and fabricate a CLOHP to be applied to increasing oil yield in the pyrolysis process. Approach: Two types of oscillating heat-pipe arrangements-parallel … …Energy Research Journal, Vol. 1, Issue 1 · 30 Jun 2010 · 7,620 accessesView PDFCite
Research ArticleOpen accessIn the abstractWaste Heat Recovery by Heat Pipe Air-Preheater to Energy Thrift from the Furnace in a Hot Forging ProcessLerchai Yodrak, Sampan Rittidech, Nattapol Poomsa-ad, Pattanapol MeenaProblem statement: Currently, the heat pipe air-preheater has become importance equipment for energy recovery from industrial waste heat because of its low investment cost and high thermal conductivity. Approach: This purpose of the study was to design, construct and test the waste heat recovery by heat pipe air-preheater from the furnace in a hot brass forging process. The mathematical model … …American Journal of Applied Sciences, Vol. 7, Issue 5 · 31 May 2010 · 8,209 accessesView PDFCite
Research ArticleOpen accessIn the abstractSynthesis and Characterization of Dinuclear Metal Complexes Stabilized by Tetradentate Schiff Base LigandsEid A. Abdalrazaq, Omar M. Al-Ramadane, Khansa S. Al-NumaProblem statement: The synthesis, spectroscopic properties and theoretical calculations of acetylacetonimine and acetylacetanilidimine Schiff-base ligands, L1H and L2H, respectively and their dinuclear complexes of the type [M2LnCl2(H2O)2], where n = 1 or 2, M = Co(II), Ni(II), Cu(II), Zn(II) and Cd(II) are described. Approach: The new tetradentate dianion Schiff base ligand which was used as stabilizers for the complexes were … …American Journal of Applied Sciences, Vol. 7, Issue 5 · 31 May 2010 · 7,568 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Pollution Hazards of Shallow Well Water in Abeokuta and Environs, Southwest, NigeriaE. O. Orebiyi, J. A. Awomeso, O. A. Idowu et al.Problem statement: Pollution of well water, either from point or non-point sources, has become a thing of health concern both in urban and rural areas. Approach: This study aim at assessing the pollution hazards of groundwater resource by sampling some shallow wells from urban and peri-urban area of Abeokuta. Collected samples were analyzed for water quality parameters using standard procedures. … …American Journal of Environmental Sciences, Vol. 6, Issue 1 · 28 Feb 2010 · 8,918 accessesView PDFCite
Research ArticleOpen accessIn the abstractImproved Dielectric Model for Polyvinyl Alcohol-Water Hydrogel at Microwave FrequenciesYou Kok Yeow, Zulkifly Abbas, Kaida Khalid, Mohamad Zaki Abdul RahmanProblem statement: The study described rigorous dielectric modeling for Polyvinyl Alcohol (PVA)-water hydrogel mixture at microwave frequencies. Approach: A commercial open-ended coaxial sensor was used to measure the dielectric constant, loss factor and ionic conductivity, σ of PVA-water hydrogel mixture ranging concentration of 80-100% water content. Results: The sensor was operating between 0.13 and 20 GHz at and above of … …American Journal of Applied Sciences, Vol. 7, Issue 2 · 28 Feb 2010 · 9,045 accessesView PDFCite
Research ArticleOpen accessIn the abstractSpatial Variability of Irrigation Water Percolation Rates and Its Relation to Rice ProductivityW. Aimrun, M.S.M. Amin, A. GholizadehProblem statement: Study on spatial variability of vertical saturated hydraulic conductivity or percolation loss was conducted within a plot of an area of 1.2 ha paddy plot to find out the relationship between percolation rate and rice productivity. A paddy soil condition that permits percolation rate of 10-20 mm irrigation water day-1 was recommended in order to get high yield … …American Journal of Applied Sciences, Vol. 7, Issue 1 · 31 Jan 2010 · 8,146 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Effect of Buoyancy Force in Computational Fluid Dynamics Simulation of a Two-Dimensional Continuous Ohmic Heating ProcessElzubier A. Salih, Thomas S.Y. Choong, S. Y. Sergie et al.Problem statement: Earlier work on ohmic heating technique focused on viscous food and foods containing solid particles. In this study, the use of ohmic heating on sterilization of guava juice is carried out. Computational fluid dynamics is used to model and simulate the system. Approach: Investigate the buoyancy effect on the CFD simulation of continuous ohmic heating systems of fluid … …American Journal of Applied Sciences, Vol. 6, Issue 11 · 30 Nov 2009 · 7,833 accessesView PDFCite
Research ArticleOpen accessIn the abstractWater Quality and Planktonic Communities in Al-Khadoud Spring, Al-Hassa, Saudi ArabiaAdel A. Fathi, Mohammed A. Al-KahtaniProblem statement: Al-Khadoud spring is one of the most important water resources in Al- Hassa Governorate, Saudi Arabia. However, much of its biotic information is still unknown. This study presented preliminary ecological information of this aquatic body. The aim of this research was to study the water characteristics and the planktonic organisms inhibiting Al-Khadoud spring and its irrigational channels for … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 7,057 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Characteristics of Leachate and Groundwater Pollution at Municipal Solid Waste Landfill of Ibb City, YemenEsmail Al Sabahi, S. Abdul Rahim, W.Y. Wan Zuhairi et al.Problem statement: Yemen one of the developing country suffering from water pollution. Landfill is one of the source of water pollution. There are several boreholes located close to Ibb landfill used for drinking water. A study of composition of landfill leachate and groundwater pollution was conducted at Ibb landfill, which is located at Al-Sahool area, north of Ibb City, Yemen. … …American Journal of Environmental Sciences, Vol. 5, Issue 3 · 30 Jun 2009 · 9,186 accessesView PDFCite
Research ArticleOpen accessIn the abstractAssessment of Groundwater and Surface Water Pollution at Mitm Area, Ibb City, YemenEsmail A. Sabahi, S. Abdul Rahim, W.Y. Wan Zuhairi et al.Groundwater and surface water samples were collected from Mitm area to study the possible impact of wastewater treatment percolation into the groundwater and surface water. The objective of the study is to assess the groundwater and surface water pollution due to wastewater treatment at Mitm area of Ibb city, in the Republic of Yemen. The concentrations of various physiochemical parameters … …American Journal of Applied Sciences, Vol. 6, Issue 4 · 30 Apr 2009 · 7,881 accessesView PDFCite