FIELD EVALUATION OF THE RESIDUAL EFFICACY OF NEW GENERATION INSECTICIDES FOR POTENTIAL USE IN INDOOR RESIDUAL SPRAY PROGRAMMES IN SOUTH AFRICA

Field evaluation of the residual efficacy of new generation insecticides for potential use in indoor residual spray programmes in South Africa

Abstract Background The decreasing residual efficacy of insecticides is an important factor when making decisions on insecticide choice for national malaria control programmes.The major challenge to using chemicals for vector control is the selection for the development of insecticide resistance.Since insecticide resistance has been recorded for mo

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THE RESPONSE OF BENTHIC MACROINVERTEBRATE AND FISH ASSEMBLAGES TO HUMAN IMPACT ALONG THE LOWER STRETCH OF THE RIVERS MORAVA AND DYJE (DANUBE RIVER BASIN, CZECH REPUBLIC)

The lower Morava and Dyje rivers belong among Guest Chairs the large lowland rivers on the southeast of the Czech Republic flowing into the Danube 69 km downstream of their confluence.Despite their high nature value and environment protection, both rivers suffered from heavy pollution from the sixties to the eighties of the last century.Significant

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Pattern of ray arrangement on cross section of bark of Aesculus

The arrangement of rays within the phloem and rhytidome was studied in Aesculus stems.It was found Guest Chairs that on the cross section most rays in the stem deviate in Z-direction, that is to the right from the geometric radius.The mechanism of Z-arrangement of the rays may be as follows: owing to the action of wind on the crown torques arise ca

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