نتایج جستجو برای: air quality standards
تعداد نتایج: 1019331 فیلتر نتایج به سال:
Early concerns regarding the health-related effects of air pollution originated from severe episodes in Meuse Valley, Belgium, in 1930; Donora, Pennsylvania, in 1948; and London, in 1952. Although the overall effects of these episodes continue to be debated, well-documented, episode-related increases in morbidity and mortality from cardiopulmonary causes provided dramatic evidence that extremel...
In New Delhi, the capital city of India, concentrations of regulated air pollutants often exceed the Indian national ambient air quality standards (INAAQS). As the sources of these pollutants differ, it is of utmost priority to understand the most dangerous air pollutant to formulate better control strategies in the city. In this study, regulated air pollutant concentrations in New Delhi during...
The paper presents a large scale nonlinear model which is used for supporting international negotiations aimed at improving air quality in Europe. The model helps to identify cost-effective measures for reducing air pollution emissions that will result in meeting environmental standards for tropospheric ozone, acidification and eutrophication. Several methodological issues related to the specif...
BACKGROUND Children with asthma in inner-city communities may be particularly vulnerable to adverse effects of air pollution because of their airways disease and exposure to relatively high levels of motor vehicle emissions. OBJECTIVE To investigate the association between fluctuations in outdoor air pollution and asthma morbidity among inner-city children with asthma. METHODS We analyzed d...
The presence of bacteria and fungi in indoor air pose a serious problem from the point of view of health protection and environmental engineering. Precise determination of various groups of microorganisms indoors is necessary both to estimate the health hazard and to create standards for indoor air quality control. This is especially important in such densely populated facilities like education...
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