نتایج جستجو برای: pollution levels
تعداد نتایج: 979089 فیلتر نتایج به سال:
We investigated the issue of noise pollution in the Bidboland gas refineryby noise measurement and surveys. The Bidboland gas refinery has several process units.The sound pressure levels were measured at several places, such as units of 200, 300,400, 500, boiler, powerhouse area, cooling towers pumps, and maintenance area, and thecorresponding noise maps were produced by using sound plan softwa...
The low-cost sensors and IoT have come to the rescue due high cost operational complexity of equipment methodologies in environmental monitoring. They are relatively inexpensive reliable. It is on this assumption that we decided use World Air Quality satellite data supplied by air matters.com. This study a 40-day preliminary work which quality [Air Index (AQI), PM2.5, PM10, NO2, CO, SO2, O3] me...
ICP on assessment and monitoring of acidification of rivers and lakes (ICP Waters) ICP on effects of air pollution on materials, including historic and cultural monuments (ICP Materials) ICP on effects of air pollution on natural vegetation and crops (ICP Vegetation) ICP on integrated monitoring of air pollution effects on ecosystems (ICP IM) ICP on modelling and mapping of critical levels and ...
BACKGROUND AND PURPOSE Current evidence suggests that stroke mortality and hospital admissions should be higher in areas with elevated levels of outdoor air pollution because of the combined acute and chronic exposure effects of air pollution. We examined this hypothesis using a small-area level ecological correlation study. METHODS We used 1030 census enumeration districts as the unit of ana...
Constructing maps of pollution levels is vital for air quality management, and presents statistical problems typical of many environmental and spatial applications. Ideally, such maps would be based on a dense network of monitoring stations, but this does not exist. Instead, there are two main sources of information in the U.S.: one is pollution measurements at a sparse set of about 50 monitori...
The purpose of this cross-sectional study in a stratified random sample of 135 bars and restaurants in North Dakota was to describe factors that influenced tobacco smoke pollution levels in the venues; to compare the quantity of tobacco smoke pollution by rurality and by presence of local ordinances; and to assess compliance with state and local laws. In data collection in 2012, we measured the...
OBJECTIVE A number of studies show an association between traffic-related air pollution and adverse respiratory health effects in children. However, most evidence relates to the regions with low or moderate levels of ambient air pollution. The study was undertaken to assess the impact of traffic-related air pollution on respiratory health status in children living in the area of high levels of ...
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