Browsing by Author "Osman, A. Z."
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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 ... -
The influence of oxygen, partial vacuum, temperature, relative humidity combined with gamma radiation on the mosquito, Culex pipiens complex l. I. Effect of exposure to temperature and relative humidity alone.
Hafez, Mahmood [محمود حافظ]; Abdel-Rahmen, A. M.; Osman, A. Z.; Wakid, A. M.; Hafez, M. K. ( Qatar University , 1993 , Article)The results revealed that a temperature of 10°C was the most effective temperature on pupal mortality of Culex pipiens complex L. followed by 32°C then 20 and 26°C. There was a gradual increase in pupal mortality with ...