نتایج جستجو برای: pm10
تعداد نتایج: 4256 فیلتر نتایج به سال:
The measurements of PM10 at two sites in Poland – a typical village and a big city considered urban background – indicated only a small difference in PM10 concentrations. In summer time, the concentrations of PM10 did not exceed the daily limit value of 50 μg/m while in wintertime, the daily limit value was exceeded for almost all sampling days for both sites. Source contributions to ambient PM...
BACKGROUND Epidemiological evidence has implicated fine particulate air pollution, particularly particles less than 10 microns in diameter (PM10), in the development of exacerbations of asthma and chronic obstructive pulmonary disease (COPD) although the mechanism is unknown. The hypothesis that PM10 particles induce oxidant stress, causing inflammation and injury to airway epithelium, was test...
یکی از مشکلات جوامع امروزی مسئله آلودگی هوا است. ذرات معلق با قطر کمتر از 10 میکرومتر (pm10) از مهم-ترین آلاینده¬های اصلی هوا به شمار می¬روند. به دلیل اندازه¬گیری نقطه¬ای و ناهمگن بودن ایستگاه¬ها، روش¬های پایش زمینی آلاینده¬های هوا به سختی می¬توانند چگونگی پراکنش این آلاینده¬ها را در گستره¬های پهناور روشن نماید. رو در روی اندازه گیری¬های زمینی، کاربرد نگاره¬های ماهواره¬ای که از توان جداسازی بال...
BACKGROUND In the year 2000 Corus closed its steel plant operations in Redcar, NE of England temporarily for refurbishment of its blast furnace. This study investigates the impact of the closure on the chemical composition and biological activity of PM10 collected in the vicinity of the steel plant. METHODS The metal content of PM10 samples collected before during and after the closure was me...
Measurements of PM10 and PM2.5 have been carried out at three locations in Agra, viz. St. John’s College (SJC), Dayalbagh (DB) and Balkeshwar (BS). PM10 and PM2.5 have been collected by respirable dust sampler (APM 460DX) and Wins Anderson impactor (APM 550), respectively. The average 24 h PM10 and PM2.5 concentrations have been found to be 121.8 ± 28.3 and 73.5 ± 14.6 μg m for SJC; 68.7 ± 24.8...
The National Ambient Air Quality Standards (NAAQS) for PM in terms of PM10 are ambient air concentration limits set by the EPA that should not be exceeded. Further, some state air pollution regulatory agencies (SAPRAs) utilize the NAAQS to regulate criteria pollutants emitted by industries by applying the NAAQS as property-line concentration limits. Prior to and since the inclusion of the PM10 ...
OBJECTIVES Numerous studies have revealed the adverse health effects of acute and chronic exposure to particulate matter less than 10 μm in aerodynamic diameter (PM10). The aim of the present study was to examine the spatial distribution of PM10 concentrations and cardiovascular mortality and to investigate the spatial correlation between PM10 and cardiovascular mortality using spatial scan sta...
Due to the frequent urban air pollution episodes worldwide recently, decision-makers and government agencies are struggling for sustainable strategies to optimize urban land use/cover change (LUCC) and improve the air quality. This study, thus, aims to identify the underlying relationships between PM10 concentration variations and LUCC based on the simulated PM10 surfaces in 2006 and 2013 in th...
We used Health Impact Assessment (HIA) to analyze the impact on a given population's health outcomes in terms of all-causes mortality and respiratory and cardiovascular hospitalizations attributable to short-term exposure to particulate matter less than 10 μm diameter (PM10) in Bejaia city, for which health effects of air pollution have never been investigated. Two scenarios of PM10 reduction w...
BACKGROUND Consistent evidence has shown increased all-cause mortality, and mortality from broad categories of causes associated with airborne particles. Less is known about associations with specific causes of death, and modifiers of those associations. AIMS To examine these questions in 20 US cities, between 1989 and 2000. METHODS Mortality files were obtained from the National Center for...
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