نتایج جستجو برای: water treatment contamination
تعداد نتایج: 1931186 فیلتر نتایج به سال:
background: cadmium (cd) is an extremely toxic metal and environmental exposure to cd has been particularly problematic in the world. oral exposure to cd may result in adverse effects on a number of tissues, the immune system, and the cardiovascular system. compounds containing cd are also carcinogenic. the presence of cd in drinking water resources in the southeastern region of rafsanjan plain...
BACKGROUND The problem of intermittent piped water supplies that exists in low- and middle-income countries is particularly severe in the slums of sub-Saharan Africa. However, little is known about whether there is deterioration of the microbiological quality of the intermittent piped water supply at a household level and whether it is a factor in reducing or increasing the occurrence of acute ...
Diverse land use activities can elevate risk of microbiological contamination entering stream headwaters. Spatially distributed water quality monitoring carried out across a 17 km(2) agricultural catchment aimed to characterize microbiological contamination reaching surface water and investigate whether winter agricultural land use restrictions proved effective in addressing water quality degra...
Background and purpose: Access to safe drinking water is of the utmost importance in public health around the world. Presence of contaminants, such as secondary bacterial growth and endotoxins could reduce the quality of water resources. This study aimed at investigating the occurrence, seasonal variation, and removal of endotoxins in a conventional water treatment plant (WTP) in Tehran, Iran. ...
Recovery from the Flint Water Crisis has been hindered by uncertainty in both the water testing process and the causes of contamination. In this work, we develop an ensemble of predictive models to assess the risk of lead contamination in individual homes and neighborhoods. To train these models, we utilize a wide range of data sources, including voluntary residential water tests, historical re...
this study was carried out to investigate the occurrence of potentially pathogenic species of vibrio in sea water and estuarine environments of the caspian sea in the golestan province of iran. a total of 127 water samples from coastal waters as well as from river and estuaries were collected and analyzed by culture, during april and september 2001. following prompt centrifugation, the resuspen...
Worldwide, contaminated drinking water poses a major health threat, particularly to child development. Diarrhoea represents a large part of the water-related disease burden and enteric infections have been linked to nutritional and growth shortfalls as well as long-term physical and cognitive impairment in children. Previous studies detailed the frequency of infection and the consequences for c...
Drinking water for human health and well-being is crucial. Accidental and intentional water contamination can pose great danger to consumers. Optimal design of a system that can quickly detect the presence of contamination in a water distribution network is very challenging for technical and operational reasons. However, on the one hand improvement in chemical and biological sensor technology h...
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