Volume 4, Issue 2
مرور بر اساس
ارسال های اخیر
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Evaluation of Crude Oil Degradation Under a no-control and Dispersant-Control Settings, Based on Biological and Physical Techniques
(University of Tehran/Springer, 2010-04-01)The degradation of crude oil under a no-control and dispersant-control setting was evaluated using loss of biological activity test, microbial population growth and measurements of optical transmittance of test media. ...
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Improving the Natural and Built Ecological Systems in an Urban Environment
(University of Tehran/Springer, 2010-04-01)This study investigates the application of landscape ecology in planning and design of urban ecological systems. The ecological approach to landscape planning and the concepts of designing and implementing ecological systems ...
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Toxicity of Seven Herbicides to the Three Cyanobacteria Anabaena flos-aquae, Microcystis flos-aquae and Mirocystis aeruginosa
(University of Tehran/Springer, 2010-04-01)The toxicity of 7 herbicides to the three cyanobacteria was tested in this work. The results indicated that: (1) There was a highly significant relationship between dried weight or chlorophyll-a and OD680nm for tested ...
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Designing a Structural Model for Explaining Environmental Attitude and Behavior of Urban Residents (Case of Tehran)
(University of Tehran/Springer, 2010-04-01)Earlier, environmental problems have been considered as technical and economic problems. In the last decades of the twentieth century the societal dimensions of environmental problems and environmental issues attracted ...
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Optimization Conditions For Determination of Cosmetic Preservatives using Ion-Exclusion Chromatography
(University of Tehran/Springer, 2010-04-01)An ion chromatography (IC) method for simultaneous determination of benzoic, salicylic and sorbic acids was developed. In this method the samples were purified by solid-phase extraction. The analytes were then eluted with ...
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Comparison of Different Hybrid Turbine Ventilator (HTV) Application Strategies to Improve the Indoor Thermal Comfort
(University of Tehran/Springer, 2010-04-01)This paper discusses the results of the full-scale field measurement study to investigate the most efficient application strategy of the Hybrid Turbine Ventilator (HTV) in improving the indoor thermal comfort in hot-humid ...
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Heavy Metals in Water, Sediment and Some Fishes of Buriganga River, Bangladesh
(University of Tehran/Springer, 2010-04-01)The spatial and temporal distribution of heavy metals in water, sediment and fish (dry weight basis) of Buriganga River, Bangladesh were determined by atomic absorption spectrophotometer. In water concentration of Pb, Cd, ...
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Determination of Toxic Toluene, Xylene and Cumene in Different Lake Waters
(University of Tehran/Springer, 2010-04-01)A rapid and reproducible method is described that employs solid phase extraction (SPE) using dichloromethane, followed by gas chromatograph-mass spectrometry for the determination of toxic toluene, xylene and cumene (TXC) ...
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Manganese and Cobalt Concentrations in Hair and Nail of Some Kano Inhabitants
(University of Tehran/Springer, 2010-04-01)Manganese and cobalt concentrations in hair and nail were determined by Flame Atomic Absorption Spectrophotometer (AAS).The mean manganese in hair and nail were 0.54 ± 0.35mg/g and 0.68 ± 0.30mg/g while the mean cobalt ...
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Recreation Value of Hara Biosphere Reserve using Willingness-to-pay method
(University of Tehran/Springer, 2010-04-01)Hara Biosphere Reserve in southern Hormozgan province with 85686 hectares areas is located between Bandar Khamir and Queshm Island. This area can be considered as the most spectacular regions of Iran for a unique coastal ...
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Brevundimonas vesicularis:A Novel Bio-sorbent for Removal of Lead from Wastewater
(University of Tehran/Springer, 2010-04-01)In this study, a bacterial species which could remove lead from wastewater was isolated from lead contaminated soil prepared in the laboratory. Based on the biochemical and morphological characterization the bacteria were ...
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Determination of Endosulfan in Water Samples Using Dispersive Liquid-liquid Micro-extraction and Experimental Design for Optimization
(University of Tehran/Springer, 2010-04-01)Water contamination due to the wide variety of pesticides used in agriculture is a global environmental pollution problem. In order to reach at sub-μgL-1 levels of detection, an efficient extraction technique is required. ...
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Impact of Sudden Change in Feed Substrate Types on Steady Response of Suspended Growth Anaerobic Reactors
(University of Tehran/Springer, 2010-04-01)Industries in developing countries add new production lines producing altogether different waste stream. This newer waste invariably finds its way to existing anaerobic treatment system causing gradual/sudden change in ...
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Variation of Indoor Air Quality in a New Apartment Building by Bake-Out
(University of Tehran/Springer, 2010-04-01)Bake-out was executed against the newly constructed apartment buildings using two methods to find out the effect of improvement on the indoor air quality and identify the concentration changes in the indoor air by the ...
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Access Enhancement by Making Changes in the Route Network to Facilitate Rescue perations in Urban Disasters
(University of Tehran/Springer, 2010-04-01)Having access to locations struck by natural environmental disasters is one of the chief necessities in urban disaster management. This paper aims to study different physical and semi-physical patterns for increasing access ...
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Nitrate, Arsenic and Selenium Concentrations in The Pecos Valley Aquifer, West Texas,USA
(University of Tehran/Springer, 2010-04-01)Nitrate, arsenic, and selenium concentrations in the Pecos Valley Aquifer of west Texas were compiled, mapped, and analyzed in the context of local geology and land use. Alluvial deposits of sand, silt, clay, and gravel ...
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Agricultural and Municipal Wastes as Container Media Component for Ornamental Nurseries
(University of Tehran/Springer, 2010-04-01)This paper deals with the suitability of agricultural and municipal organic wastes as growing media components for ornamental plants. Nine growing media prepared by mixing the main components of peat (P), hazelnut husk (H) ...
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H2O2 Oxidation of Pre-Coagulated Semi Aerobic Leachate
(University of Tehran/Springer, 2010-04-01)Heavily polluted wastewater from sanitary landfill presents the leachate characteristics that need special treatment and disposal. Concentration of chemical oxygen demand (COD), ammonia nitrogen (NH3-N), heavy metal and ...
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Effects of Land use Change and Erosion on Physical and Chemical Properties of Water(Karkhe watershed)
(University of Tehran/Springer, 2010-04-01)Karkhe watershed (KW) with more than 5 million hectares recently encountered many problems in the natural, social and man-made habitats. Unsuitable use of land, soil erosion and lack of rainfall are the most destructive ...
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Application of Electrocoagulation Process in Removal of Zinc and Copper From Aqueous Solutions by Aluminum Electrodes
(University of Tehran/Springer, 2010-04-01)In this study, the performance of electro-coagulation in combination with aluminum sacrificial anode, in removal of zinc and copper has been investigated. Several parameters, such as pollutant concentration, pH, electrical ...



