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Prolonged exposure to two pesticides Sevin and Thiodan for 30 days produced impairments in the brain of Channa striatus on the following ways:
– Separation and damage to meninges of cerebral hemispheres
– severe damage to all the five layers of the optic textum
– severe damage to torus...
An investigation is made into the seasonal and depth‐related distribution of sulphides in the Breiter Luzin in the years of 1982 to 1984 with the aid of a white‐lead line and of titration against copper sulphate. The results are discussed with respect to their importance for the occurrence of...
The synergistic effects of sulfoxide on the effects of carbaryl in the snail Lymnaea acuminata were studied. Snails were exposed to 40 % and 80 % of 48 h LC50 doses of synergist, carbaryl mixture (5 : 1). While the concentration of carbaryl present in the mixture would not bring about any change...
Modern methods of analyses of environment yield multivariate data sets of measured objects which are used as the basis of the evaluation and interpretation of substances, differentiated effects, but also of samples or processes. The integrated evaluation and assessment of such multivariate data...
Different experimental conditions (fed large, fed small, starved large, starved small groups, batch offered ration during experiment and low fish loading for a constant volume of water) of the carnivorous fish Clarias batrachus resulted in marked changes in the concentration of different N...
In 18 field lysimeters (area 1 m2, depth 1 m, couch‐grass Dactylis glomerata L.) there has been investigated for two years the influence of 100, 250 und 1000 mg/kg Pb‐load and of 3, 10 and 30 mg/kg Cd‐load on the migration of heavy metals into the ground‐water and their translocation into plants...
The separation of heavy metals by complexation with macromolecular water‐soluble agents and subsequent ultrafiltration is described. The method can be expected to join common techniques of metal separation like liquid‐liquid extraction, adsorption, redox reaction or liquid membrane permeation....
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