نتایج جستجو برای: pm25 and pm10
تعداد نتایج: 16827790 فیلتر نتایج به سال:
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...
Background and purpose: In the past two decades, epidemiological studies have shown that outdoor air pollution lead to increase in respiratory symptoms, cardiovascular diseases, chronic bronchitis and mortality. This study aimed to estimate AQI index and the risk of cardiovascular and respiratory diseases and premature mortality caused by PM10, PM2.5 and SO2 in Yazd, 2013-2014. Materials and...
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...
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...
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 ...
Background and Objective: High density of industries and phenomena of dust make Ahvaz as one of the most polluted cities in Iran. The aim of current study was determination of cardiovascular death and hospital admissions respiratory disease of particulate matter less than 10 microns (PM10) on human health in Ahvaz, during 2010-2012. Materials and Methods: This descriptive study was conducted...
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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