نتایج جستجو برای: pollution contamination

تعداد نتایج: 117864  

2005
M. RAJESH

Environmental monitoring and assessment includes a wide spectrum of study that overlaps many disciplines, all of which are independent. This paper illustrates several broad subjects related to environmental constraints including water pollution, effects of atmospheric contamination, strip mining, and natural disasters. Remote sensing can provide complementary information to existing ground-base...

Jafar Akbari, Katayoun Morteza-Semnani, Majid Saeedi, Narges Sedghi Sharif-Abad, Reza Enayatifard,

The risk of microbial contamination in the cosmetic products especially in smuggled preparations and transmission of it to consumers is very high. In this study, the microbial content and the pollution of some sunscreen creams in the market and one sample in official market as witness were evaluated. The microbial content (bacterial total count, fungal count, and presence of Pseudomon asaerogin...

1997
Jinghua Zhang

to the river near Parma, which is a short distance from where the Boise River empties into the Snake River. By comparing measurements of nitrogen and phosphorus at Lucky Peak Dam (above Boise) with similar measurements at Parma, an estimate of pollution from both urban and rural sources along the river can be made. Contamination concentrations vary greatly with the level of stream flow because ...

2012
Joonhee Kang Jin Young Kim

Monitoring air pollution including the contents of VOC, O(3), NO(2), and dusts has attracted a lot of interest in addition to the monitoring of water contamination because it affects directly to the quality of living conditions. Most of the current air pollution monitoring stations use the expensive and bulky instruments and are only installed in the very limited area. To bring the information ...

2010
J. W. Santo Domingo

Waterborne pathogens from faecal pollution continue to be major contributors to outbreaks of infectious disease in many areas around the world. While developed countries have made much progress in municipal wastewater treatment and management of agricultural wastes, faecal contamination of source waters for drinking, recreation and rearing of shellfish still contributes to outbreaks of infectio...

2011
Andrew P. Negri Mia O. Hoogenboom

Coral reefs are highly susceptible to climate change, with elevated sea surface temperatures (SST) posing one of the main threats to coral survival. Successful recruitment of new colonies is important for the recovery of degraded reefs following mortality events. Coral larvae require relatively uncontaminated substratum on which to metamorphose into sessile polyps, and the increasing pollution ...

2016
S. A. Bapat

135 ABSTRACT: Heavy metals and dyes are major contributors in contamination of water streams. These contaminants enter into our ecosystem, thus posing a significant threat to public health, ecological equilibrium and environment. Thus a combined discharge of these contaminants results in water pollution with high chemical oxygen demand, biological oxygen demand, color, particulate matter, suspe...

Journal: :iranian journal of health sciences 0
soheil sobhanardakani department of environment, school of basic sciences, hamedan branch, islamic azad university, hamedan, iran maryam mohammadi-roozbahani department of environment, ahvaz branch, islamic azad university, ahvaz, iran rezvan sorooshnia young researchers and elite club, ahvaz branch, islamic azad university, ahvaz, iran hoda karimi young researchers and elite club, ahvaz branch, islamic azad university, ahvaz, iran

background and purpose: in the environment, heavy metals in high concentration are toxic to most organisms. human activities have continuously increased the concentration of these metals in the environment such as soils. in the present study, soil samples collected from ahvaz iv industrial estate in khuzestan province. materials and methods: the soil samples were taken from 9 stations in 4 card...

Journal: :international journal of environmental research 2010
kh. rezaee e.b. saion c.k. yap m.r. abdi a. riyahi bakhtiari

forty seven sediment cores recovered from the south china sea coasts along the east coast of peninsular malaysia were analysed for as, cd, cr, cu, hg, ni, pb and zn using instrumental neutron activation analysis. the results indicate a homogeneous distribution except for as and pb in all stations. assessment of heavy metal pollution in marine sediments requires knowledge of pre-anthropogenic me...

2013
Fangcheng Lv Chunxu Qin Yunpeng Liu Wenyi Guo Ruihai Li

This report describes the natural contamination test results of ±800kV line insulators at high altitudes. Natural exposure tests with -816kV DC voltage energization were carried out at National Engineering Laboratory for UHV Engineering Technology (Kunming).The results showed that the strain type and V-type insulator strings show a lighter pollution and the insulators with a better aerodynamic ...

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