نتایج جستجو برای: particulate dispersion

تعداد نتایج: 89627  

2014
J. J. P. Kuenen

Emissions to air are reported by countries to EMEP. The emissions data are used for country compliance checking with EU emission ceilings and associated emission reductions. The emissions data are also necessary as input for air quality modelling. The quality of these “official” emissions varies across Europe. As alternative to these official emissions, a spatially explicit high-resolution emis...

2009
Robert J. Laumbach Gerald Harris Howard M. Kipen Panos Georgopoulos Pamela Shade Sastry S. Isukapalli Christos Efstathiou Sandro Galea David Vlahov Daniel Wartenberg

Researchers have reported adverse health effects among rescue/recovery workers and people living near the World Trade Center on September 11, 2001. The authors investigated the occurrence of respiratory symptoms among persons living outside of Lower Manhattan in areas affected by the World Trade Center particulate matter plume. Using a novel atmospheric dispersion model, they estimated relative...

Journal: :international journal of human capital in urban management 0
m. memarianfard khaje nasir toosi university of technology, department of civil engineering, tehran, iran a. mostafa hatami khaje nasir toosi university of technology, department of civil engineering, tehran, iran m. memarianfard khaje nasir toosi university of technology, department of civil engineering, tehran, iran m. ajam khaje nasir toosi university of technology, department of civil engineering, tehran, iran

in many industrialized areas, the highest concentration of particulate matter, as a major concern on public health, is being felt worldwide problem. since the air pollution assessment and its evaluation with considering spatial dispersion analysis because of various factors are complex, in this paper, gis-based modeling approach was utilized to zoning pm2.5 dispersion over tehran, during one ye...

2006
I. K. Wijeratne W. Bijker

Dispersion of air pollution depends upon various factors including weather conditions, topography and local situation, causing large variation, even in small areas. In addition to mathematical dispersion models and interpolation methods, remote sensing can improve mapping of the spatial distribution of urban air pollution, although no dedicated sensors exist. We used aerosol optical thickness, ...

This paper presents a detailed account of computational fluid dynamics (CFD) simulations undertaken to investigate the influence of intake (ventilation) air velocities on the flow patterns of diesel particulate matter (DPM) generated by a man-riding vehicle operating in a straight rectangular cross section tunnel in an underground coal mine. The simulation results are validated against an earli...

N. Zarrinfar and A. Saidi,

Titanium carbide is used as an attractive reinforcement to produce particulate metal matrix composites. One of the problems to use this carbide as a reinforcement in copper-based composites is the lack of wetability in Cu-TiC system. This property improves as the C/Ti ratio in carbide decreases.&#10Problems to use this carbide as a reinforcement in copper-based composites is the lack of wetabii...

2013
M. Tufail

From the prospective of air quality, the dispersion of heavy metal pollutants has gain importance in recent past. The pollutants disperse from the point of release to the distant areas transporting contaminants there. Heavy metal pollutants in the form of fine particulate matter can be harmful to human health through inhalation. In this study the lateral dispersion of heavy particles is predict...

Journal: :Journal of the Japan Institute of Metals and Materials 1990

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