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Environmental Science and Pollution Research - Sediment provides a stagnant habitat to microbes that accumulate organic matter and other industrial pollutants from the upper layer of the water. The...  相似文献   
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Environmental Science and Pollution Research - Integration of photovoltaic (PV) technologies with building envelopes started in the early 1990 to meet the building energy demand and shave the peak...  相似文献   
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Singh D  Singh A 《Chemosphere》2002,49(1):45-49
Mortality caused by the aqueous extracts of leaf and stem bark of four plants belonging to family Euphorbiaceae and Apocynaceae against freshwater fish Channa punctatus has been reported. It was found that dilute aqueous solutions of leaf and stem bark were active in killing the fishes. The toxic effect of stem bark of all the plants were time as well as dose dependent. There was significant negative correlation between LC50 and exposure periods. Thus, the LC50 values of stem bark extracts of Euphorbia royleana, Jatropha gossypifolia, Nerium indicum and Thevelia peruviana were decreased from 0.050 g/l (24 h) > to 0.020 g/l (96 h); 4.61 g/l (24 h) > to 4.34 g/l (96 h); 0.097 g/l (24 h) > to 0.041 g/l (96 h) and 4.05 g/l (24 h) > to 3.17 g/l (96 h), respectively. It has been suggested that these plant products cannot be used directly in freshwater bodies, without their detailed studies on long-term effects on non-target organism as well their structure activity relationship.  相似文献   
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Environmental Science and Pollution Research - Solar still is one of the sustainable and renewable technology which converts brackish or salty water into fresh water. The technology helps in CO2...  相似文献   
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Singh D  Singh A 《Chemosphere》2005,60(1):135-140
The latex of four plants viz. Euphorbia royleana, Jatropha gossypifolia (Euphorbiaceae), Nerium indicum and Thevetia peruviana (Apocynaceae) caused significant reduction in acid/alkaline phosphatase activity and anti-acetylcholinesterase activity in nervous tissue of freshwater air breathing fish Channa marulius. The reduction in the activity of both phosphatases and AChE were time as well as dose dependent.  相似文献   
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