نتایج جستجو برای: pollution load index ipoll and index of geo
تعداد نتایج: 24090068 فیلتر نتایج به سال:
abstract background: musculoskeletal disorders (msds) are a serious problem among the nursing staff. mental workload is the major cause of msds among nursing staff. the aim of this study was to investigate the mental workload dimensions and their association with msds among nurses of alzahra hospital, affi liated to isfahan university of medical sciences. materials and methods: this descriptive...
introduction: among the environmental pollutions, noise is very important for its physiological and psychological effects on human. traffic noise is one of the most important pollutants and the hospitals are one of the critical places regarding this type of noise. for these reasons, in the summer of 1382, the traffic noise of mashhad main streets around the hospit...
Many elements such as Arsenic (As), Cadmium (Cd), Copper (Cu), Chromium (Cr), Lead (Pb), Zinc (Zn), and others are major environmental problems due to their toxic nature, nonbiodegradability and accumulative behaviors. There are anthropogenic or geogenic sources that accumulate or rotate elements in sediments. Sediments served as excellent indicator of metal pollution in coastal environments as...
Soil pollution by metal(loid)s resulting from rapid economic development is a major concern. Accurately estimating the spatial distribution of soil metal(loid) pollution has great significance in preventing and controlling soil pollution. In this study, 126 topsoil samples were collected in Kunshan City and the geo-accumulation index was selected as a pollution index. We used Kriging interpolat...
Heavy metals (HMs) in sewage sludge have become the crucial limiting factors for land use application. Samples were collected and analyzed from 32 waste water treatment plants (WWTPs) in the Shanxi Province, China. HM levels in sewage sludge were assessed. The multivariate statistical method principal component analysis (PCA) was applied to identify the sources of HMs in sewage sludge. HM pollu...
Purpose. To show the impact of Mitrovica Industrial Park landfill on Sitnica River pollution through sediment analysis. For this purpose, to assess level and ecological indicators were used: geo-accumulation index, contamination factor, rate, modified enrichment potential risk load index. Methodology. The ISO 5667-15:2009 standard method was used for sampling. At same time, 11885:2007 determina...
In the present paper, an investigation on natural and anthropic radioactivity heavy metals content in a basalt aggregate for concrete from Sicily, Southern Italy, was performed as case study. particular, evaluation of specific activity radium-226, thorium-232, potassium-40 caesium-137 radionuclides by using High-Purity Germanium (HPGe) γ-ray spectrometry, together with estimation several indexe...
although water and land pollution are very dangerous, air pollution has its own peculiarities due to its transboundary dispersion of pollutants over the entire world. in any well planned urban set up, industrial pollution takes a back seat and vehicular emissions take precedence as the major cause of urban air pollution. in the present study, air pollution tolerance index was calculated for var...
Heavy metals are normally occurring elements that have a density at least 5 times higher than of water. Their plentiful domestic, industrial, agricultural and technological usages have led to their widespread distribution in the environment; raising worries over their possible impacts on human health and the environment. The toxicity of heavy metals relies on numerous factors including the dose...
Background and Objectives: Implementation of industrial development programs, without considering environmental considerations has caused continuous entrance of pollutants to air. Therefore, the purpose of this study was assessing the ecological risk of some heavy metals in the dust of a number of non-metallic industries and determining the best indices in pollution assessment of Ardakan area. ...
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