Rupa dasgupta (16 risultati)

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Condizione: New. pp. xv + 159, Abbreviations.

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Taschenbuch. Condizione: Neu. Neuware.

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Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Insecticides are continuously being used throughout the world in agricultural fields to control insect pests and subsequently to increase productivity. The book deals with the effects of some commonly used insecticides in West Bengal, India when applied at doses which have been recommended by the manufacturer for use in agricultural fields to selected species of nontarget soil organism, i.e epigeic earthworms which are widely used as model organisms for ecological risk assessment of polluted soil. Determination of acute toxicity of these insecticides were done and application of their sub-lethal doses under laboratory conditions to record their effect on physiological parameters, viz, rate of reproduction, biomass change and rate of respiration as well as their impact on biochemical parameters of the test organisms viz, enzymatic activities were done. The effect of the selected insecticides on activities of enzymes, i.e Acid and Alkaline Phosphatase and Acetylcholine Esterase indicated their possible role for use as bioindicator for toxicity assessment . Field experiments were carried out to validate the data generated in the laboratory experiments. 136 pp. Englisch.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Insecticides are continuously being used throughout the world in agricultural fields to control insect pests and subsequently to increase productivity. The book deals with the effects of some commonly used insecticides in West Bengal, India when applied at doses which have been recommended by the manufacturer for use in agricultural fields to selected species of nontarget soil organism, i.e epigeic earthworms which are widely used as model organisms for ecological risk assessment of polluted soil. Determination of acute toxicity of these insecticides were done and application of their sub-lethal doses under laboratory conditions to record their effect on physiological parameters, viz, rate of reproduction, biomass change and rate of respiration as well as their impact on biochemical parameters of the test organisms viz, enzymatic activities were done. The effect of the selected insecticides on activities of enzymes, i.e Acid and Alkaline Phosphatase and Acetylcholine Esterase indicated their possible role for use as bioindicator for toxicity assessment . Field experiments were carried out to validate the data generated in the laboratory experiments.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Dasgupta RupaDr. R. Dasgupta, M.Phil, PhD has taught Zoology in UG and PG levels as an Associate Professor in Raja N.L Khan Women s College,Paschim Medinipur for nearly 18 years. Presently she is serving as the Principal of Debra Tha.…

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Insecticides are continuously being used throughout the world in agricultural fields to control insect pests and subsequently to increase productivity. The book deals with the effects of some commonly used insecticides in West Bengal, India when applied at doses which have been recommended by the manufacturer for use in agricultural fields to selected species of nontarget soil organism, i.e epigeic earthworms which are widely used as model organisms for ecological risk assessment of polluted soil. Determination of acute toxicity of these insecticides were done and application of their sub-lethal doses under laboratory conditions to record their effect on physiological parameters, viz, rate of reproduction, biomass change and rate of respiration as well as their impact on biochemical parameters of the test organisms viz, enzymatic activities were done. The effect of the selected insecticides on activities of enzymes, i.e Acid and Alkaline Phosphatase and Acetylcholine Esterase indicated their possible role for use as bioindicator for toxicity assessment . Field experiments were carried out to validate the data generated in the laboratory experiments.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 136 pp. Englisch.…