نتایج جستجو برای: pollutant standard index
تعداد نتایج: 903883 فیلتر نتایج به سال:
Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88-89,...
Drought is a natural hazard that has significant impact on economic, agricultural, environmental, and social aspects. In the present study details analysis of rainfall data has been carried out for the years 1981-2011. Standard precipitation index (SPI) has been used to evaluate the precipitation deficit in the Karun watershed of Iran. The results indicated that 1981-82,82-83,83-84,84-85,88-89,...
Continuous development and increase of population in the urban areas, a series of problems related to environment such as deforestation, release of toxic materials, solid waste disposals, air pollution and many more, have attracted attention much greater than ever before. The problem of air pollution in cities has become so severe that there is a need for timely information about changes in the...
Research indicates that multiple outdoor air pollutants and adverse neighborhood conditions are spatially correlated. Yet health risks associated with concurrent exposure to air pollution mixtures and clustered neighborhood factors remain underexplored. Statistical models to assess the health effects from pollutant mixtures remain limited, due to problems of collinearity between pollutants and ...
BACKGROUND Particulate air pollution has been associated with several adverse cardiovascular health outcomes, and people with diabetes may be especially vulnerable. One potential pathway is inflammation and endothelial dysfunction-processes in which cell adhesion molecules and inflammatory markers play important roles. AIM To examine whether plasma levels of soluble intercellular adhesion mol...
This study examines the reaction of Standard and Poor’s Regional Bank Index (SPRB) to U.S. equity market fear index (i.e., Chicago Board Trade Volatility [VIX]). The VIX is designed perform as a leading indicator volatility in markets. However, practitioners observe many periods divergence between S&P 500. Our paper daily data for period 2009 through 2019. We show that once effects consumer...
environmental pollution by various pollutants is one of the most important problems of this century. at least 20 elements, including chromium have been classified in toxic metals group, that half of them are released in the environment in excessive amounts of standards. chromium is a toxic pollutant that is widely spread in the environment and exists in cement and concrete. the aim of this stud...
Current background ozone (O(3)) concentrations over the northern hemisphere's midlatitudes are high enough to damage crops and are projected to increase. Soybean (Glycine max) is particularly sensitive to O(3); therefore, establishing an O(3) exposure threshold for damage is critical to understanding the current and future impact of this pollutant. This study aims to determine the exposure resp...
Background: Air pollution is one of the most important problems in industrial cities and has affect on the lives of all people. In order to set the control programs, air pollution monitoring and determination of air quality are necessary. The aim of this study was to compare health quality of air in Tehran and Isfahan cities. Methods: This was a descriptive–analytic study . The moment conce...
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