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The present study deals with the comparative quality of potable waters of different sources at Bhagalpur, India, which is located on the south bank of river Ganga at 87°02′ N latitude and 25°15′ E longitude. Surface water (river Ganga) receives a number of drains and domestic wastewater outlets....
The effect of lethal and sublethal concentrations of nickel nitrate on the visceral hexokinase activity in Labeo rohita (Ham.), Clarias batrachus (Linn.), and Channa punctatus (Bloch) was investigated. A maximum fall in hexokinase activity was recorded in liver followed by muscle, kidney, brain...
The experimental facilities and conditions for the determination of the surface potential in the laboratory as well as of the ferric incrustation during field experiments for 3 … 6 months are described. Compared with non‐polarized pipe segments, the separation of ferric hydroxide is prevented or...
Anisopteran nymphs of certain water bodies at various locations in Madhya Pradesh in relation to certain ecological conditions were studied. In all twenty‐one species belonging to four different families were identified. Mostly they were found in shallow running water having a considerably sandy...
The freshwater catfish, H. fossilis, exposed to the 96 h‐LC50 (0.007 … 0.013 ppm) of the organochlorine thíodan (endosulfan) for 4 days, developed behavioural anomalies within 30 min of exposure. Increased opercular movement rate, greater frequency of surfacing for gulping air, restlessness,...
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