نتایج جستجو برای: pollution dispersion

تعداد نتایج: 130544  

Journal: :pollution 2015
alireza noorpoor h. r. rahman

today, the cement industry is one of the major air polluting industries in the world. hence, in this study, owing to the importance and role of contaminants from the plant, an appraisal of the emission contributions in addition to other factors have been discussed. there are several reasons behind the importance of modeling air pollutants. first, the assessment of standards for air pollution, a...

Journal: :International journal of environmental health research 2009
Juliana A Maantay Jun Tu Andrew R Maroko

This study developed new procedures to loosely integrate an air dispersion model, AERMOD, and a geographic information system (GIS) package, ArcGIS, to simulate air dispersion from stationary sources in the Bronx, New York City, for five pollutants: PM(10), PM(2.5), NO(x), CO, and SO(2). Plume buffers created from the model results were used as proxies of human exposure to the pollution from th...

اکبری, مهری, بخشی‎زاده, فریماه, رضائیان, هانی,

Air pollution has become one of the main problems of cities. Among the sources of air pollution, vehicular traffic plays an important role. Planning for efficient management and control of the air pollution caused by vehicular traffic requires accurate information on spatio-temporal dispersion of the pollutions. This research studies 3D spatio-temporal dispersion of NOx pollution caused by vehi...

2014
Ivana Ilić Milovan Vuković Nada Štrbac Snežana Urošević

Air pollution caused by motor vehicles is one of the most serious problems of civilized society. The aim of this paper is to develop a decision support system that can be used by authorities to reduce air pollution from road transport. The essence of this system consists of mathematical sub-models based on the computer program methodology for calculating emissions from road transport, (COPERT I...

ژورنال: سلامت و محیط زیست 2016

Background and Objective: Increasing population growth and construction of high-rise buildings have doubled the amount of environmental pollution in the cities. Moreover, people use the open urban spaces more than before in order to meet their ecological needs. Accordingly, some parameters such as various vegetation and continuous winds streams can be considerably influential in transmittance o...

Journal: :Environmental Modelling and Software 2006
Armando Pelliccioni Tiziano Tirabassi

The study presents the development of an integrated model that optimises the performances of Neural Nets (NN) and dispersion models developed by the authors. Supervised NN models and dispersion models are two important techniques for evaluating air pollution concentrations. In our work we filter the concentration levels produced by an air pollution model with an NN to account for disagreement b...

Journal: :Journal of the Air Pollution Control Association 1967

Journal: :Comp.-Aided Civil and Infrastruct. Engineering 2014
Samitha Samaranayake Steven D. Glaser David Holstius Julien Monteil Ken Tracton Edmund Seto Alexandre M. Bayen

Traffic-related air pollution is a serious problem with significant health impacts in both urban and suburban environments. Despite an increased realization of the negative impacts of air pollution, assessing individuals’ exposure to traffic-related air pollution remains a challenge. Obtaining high resolution estimates are difficult due to the spatial and temporal variability of emissions, the ...

2012
Tasneem Abbasi

Extensive research has also been done on the pollution attenuation capability of different tree species [2-5].But, in comparison, much less is known on how to maximize gains from a greenbelt. The normal proactive is to put a circular ring of trees around a pollution source. But it is easy to see that such an approach is likely to have limited utility, if at all. This is because dispersion of pa...

1999
Jocelyne Clench-Aas Alena Bartonova Trond Bøhler Knut E. Grønskei Bjarne Sivertsen Steinar Larssen

This paper presents an integrated exposure monitoring system, based on an expansion of existing air quality monitoring systems using dispersion modelling. The system allows: (1) identifying geographical areas whose inhabitants are most exposed to ambient pollution; (2) identifying how many people in an area are exposed to concentrations of pollution exceeding air quality guidelines; (3) describ...

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