نتایج جستجو برای: reduction of pollutant
تعداد نتایج: 21188769 فیلتر نتایج به سال:
Unborn children are exposed to environmental pollutants via the placenta, and there is a causal relationship between maternal intake of pollutants and fetal exposure. Placental examination is an effective way for acquiring data for estimating fetal exposure. We analyzed the concentrations of 104 congeners of persistent organic pollutants, seven organotin compounds, five heavy metals, and methyl...
Lead ion of sulfate was studied electrochemically analysis, using cyclic voltammetric technique by glassy carbon electrode (GCE) in normal saline solution (0.9%NaCl). The results of the study have been found oxidation and reduction current peaks of lead ion in normal saline at -550 mV and -650mV respectively. It was studied the electrochemical properties of the redox current peaks of Pb(II) wit...
Zeolite is widely used for removing heavy metals from aqueous solutions. The objective of this study was to assess three sizes of zeolite in removing lead, nickel and cadmium from wastewater. A splite-plot experimental design was employed with 45 treatments and three replications at Shiraz University Lab in 2011. The treatments were five different concentrations of the pollutant and three sizes...
the limitation of energy resources and its considerable consumption growth in iran has doubled the necessity of optimization and conservation of energy in the country compared to the average consumption rate of energy in the world and also because of high consumption rate's adverse effects in the environment. heating systems are among the main consumers of energy and using a high efficienc...
There are excellent offshore wind resources in the ocean off west coast of Taiwan, and renewable power has been actively developed recent years. This study intends to establish a cost-effectiveness assessment model compare pollutant emissions cost benefits traditional fossil fuel cells used as propulsion force working vessels Taiwan’s farms. According MARPOL, should use very-low-sulfur oil (VLS...
Introduction & Objective: Sodium arsenite as an environmental pollutant being found in the air, water, and earth crust threats the human beings' health. The aim of this study was to investigate the effect of sodium arsenite on viability and morphology of mesenchymal stem cells in rat bone marrow. Materials & Methods: In this exprimental study the cells were extracted in DMEM containing 15% F...
Numerical modelling of the passive control of air pollution in asymmetrical urban street canyons using refined mesh discretization schemes, This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof...
In case of an accidental release of indoor airborne pollutants, it is critical to know information of the pollutant sources. Current inverse modeling concentrates on identifying a single pollutant source or multiple pollutant sources in simplified puff or constant release forms. This investigation proposes an inverse model to precisely identify the multiple pollutant source number, locations an...
A three-dimensional meteorological model and a Lagrangian particle dispersion model are used to study the eects of a uniform large-scale wind on the dispersion of a non-reactive pollutant in a coastal region with complex terrain. Simulations are carried out both with and without a background wind. A comparison between model results and measured data (wind and pollutant concentrations) indicate...
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