نتایج جستجو برای: pollutant standard index
تعداد نتایج: 903883 فیلتر نتایج به سال:
background: although several studies have investigated the association between maternal exposure to air pollution and preterm birth, the results are inconsistent. the aim of this study was to further investigate the relation between maternal exposure to ambient air pollution during pregnancy and the risk of preterm birth and low birth weight (lbw) in an iranian pregnant population. materials an...
Introduction: Air pollution is now one of the greatest environmental hazards to human health in the world. The aim of this study determines the relationship between air quality and cases of myocardial infarction in Yazd. Methods: This Ecological study was performed in Yazd, Iran. In this study, all individuals who referred to emergency cases with myocardial infarction in Yazd in one year from ...
Background & Aims: Air pollution can affect human health, plants, buildings and environment in many ways. Hence the aim of this study was determined to compare the air quality in six industrial cities (Tehran, Tabriz, Mashhad, Urmia, Ahvaz and Irak) by using air quality index (AQI) in 2011-2012. Materials & Methods: In order to AQI determination, hourly data of five criteria pollutants taken f...
introduction: the process of urbanism in countries that are developing, like islamic republic of iran with increasing of the number and the size of cities and the fast accepting of population have been caused the forming of problems like an in-official economics and in-official settlement and was become creating high population in main and old places of city and increasing of air pollution and ...
Clean air is a basic thing that needed by living things. This makes clean very important for the continuity of life. Therefore, an pollution standard index to determine quality based on concentration gas contained in it. As State Capital which center economy, DKI Jakarta Province has issue needs be controlled regularly. research qualitative descriptive study secondary data pollutant compare par...
Introduction and Purpose: Air pollution is one of the major problems of megacities that seriously threatens the health of their residents. Considering this, taking some actions such as studying pollutant variations, comparing pollutants with standards, and informing the health authorities and public paly a fundamental role in developing preventive schemes. This study was tar...
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,...
OBJECTIVE We investigated the association between body mass index (BMI) standard deviation score (SDS) and prenatal exposure to hexachlorobenzene, dichlorodiphenyldichloroethylene (DDE), dioxin-like compounds, and polychlorinated biphenyls (PCBs). METHODS In this prospective birth cohort study, we assessed a random sample of mother-infant pairs (n = 138) living in Flanders, Belgium, with foll...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید