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Dr. S. A. S. Mostafa A. I. Dabbour M. A. Nassif M. I. A. Aziz 《Journal of pest science》1981,54(12):184-187
A survey of insect pests of stored products in three main regions of Saudi Arabia was carried out during two successive years, 1978 und 1979. Randomized samples of different commodities were collected for inspection from 13 localities four times a year. Thirty six species of insect pests belonging to 12 families and 4 orders in addition to 2 hymenopterous parasites were recorded. 相似文献
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Posttranslational modification of pili upon cell contact triggers N. meningitidis dissemination 总被引：1，自引：0，他引：1
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Nassif X 《Science (New York, N.Y.)》2000,287(5459):1767-1768
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Mofeida Nassif J. Peter Brooke David B. A. Hutchinson Osman M. Kamel E. Anthony Savage 《Pest management science》1980,11(6):679-684
Approximately 350 people, the inhabitants of two villages in the Fayum district of Egypt, were individually dusted with 50 g of powder containing 2.5 or 5.0 g permethrin kg?1. The inhabitants of a third village were left untreated as a control. Before treatment, approximately two-thirds of the population of all three villages were infested with bodylice. Fourteen days after treatment, the permethrin dust at the lower strength reduced the infestation by 98.8% and at the higher strength by 100%. The dust containing 5 g permethrin kg?1 maintained a high level of residual control (80.5%) for at least 91 days. The other gave a lower level of control at this time. Urine samples, taken from subjects in each of the treated villages before and after dusting, were analysed for permethrin metabolites. Results indicated that the maximum amount of permethrin absorbed, orally, through the skin, or by inhalation, was 39 μg kg?1 body weight, 24 h after treatment. No residue was found 30 days and 60 days after treatment. It was concluded that there was a very substantial safety margin when permethrin dusts were used on man for bodylice control. 相似文献
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Populations of bodylice, Pediculus humanus humanus L., in Egypt have become resistant to DDT and BHC, but not to malathion. A single dust application of permethrin (1 % a.i.; cis: trans-ratio 25:75) rendered 98.9% of the treated population louse-free. Thirty-seven days after dusting 91.3% and at the end of the 98-day observation period 64.6% of the population were free of infestation; during the same period the proportion of infested individuals rose by 12.3% in a similar untreated village. Permethrin is ovicidal against bodylice, affects the population of the human flea, PulexirritansL., and ishighly effective against the rat flea, Xenopsyllacheopis(Rothsch.). 相似文献
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