Browsing QU Ceased Journals by Author "Hafez M."
Now showing items 1-3 of 3
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Combined effects of gamma radiation and Some physical factors on the rate of development of culex pipiens complex(L)
Wakid, A. M.; Hafez, M.; Abdel-Rahman, A. M.; Hafez, M.K.; واكد, عبد الفتاح مجاهد; حافظ, محمود; عبد الرحمن, أمنية; حافظ, مديحة كامل... more authors ... less authors ( Qatar University , 1993 , Article)The present work deals with the role of some physical factors, applied separately or combined with gamma radiation on the Fj rate of development of Culex pipiens L. when treated in the pupal stage. The results showed no ... -
Combined effects of oxygen, partial vacuum, temperature, humidity and gamma radiation on mating competitiveness of culex pipiens complex l. Males
Abdel Rahman, A. M.; Wakid, A. M.; Hafez, M.; Hafez, M. K.; عبد الرحمن, أمنية; واكد, عبد الفتاح مجاهد; حافظ, محمود; حافظ, مديحة كامل... more authors ... less authors ( Qatar University , 1993 , Article)When the pupal stage of Culex pipiens complex L. male mosquito was exposed to gamma radiation (60 Gy), oxygen, partial vacuum (0.1 torr), low temperature (10°C), for one or two hours, or low humidity (31% R. H.) for 3 ... -
The influence of certain physical stresses on pulal mortality of Culex pipiens complex L. II. Effect of exposure to oxygen and partial vacuum.
Wakid, A. M.; Hafez, M.; Abdel-Rahman, A. M.; Osman, A. Z.; Hafez, M. K.; واكد, عبد الفتاح مجاهد; حافظ, محمود; عبد الرحمن, أمنية; عثمان, عزمي زكي; حافظ, مديحة كامل... more authors ... less authors ( Qatar University , 1993 , Article)The results indicated that when pupae were exposed to oxygen atmosphere for different periods ranging from V2 - 48 hours, the pupal mortality increased with increasing the exposure periods. The mortality reached to about ...