بحث بسيط
السجلات المعروضة 111 -- 120 من 165
Combined effects of oxygen, partial vacuum, temperature, humidity and gamma radiation on mating competitiveness of culex pipiens complex l. Males
(
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 ...
Effect Of Ca++ And Mg++ On The Binding Of Cytoplasmic And Nuclear Estradiol Receptors In Breast Cancer Of Female Patients
(
Qatar University
, 1993 , Article)
Specific estradiol receptors were quantitatively determined in the cytosol and nuclear fractions of four cancerous breast tissues and one normal uterus. Validated methods are described for estradiol receptor assay. The ...
Combined effects of gamma radiation and Some physical factors on the rate of development of culex pipiens complex(L)
(
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 ...
The blood cells of a sea urchin from abou-kir coast Alexandria, Egypt.
(
Qatar University
, 1993 , Article)
The blood cells of a common sea urchin, collected from Abou-Kir region, were investigated using light and electron microscopy. Their distribution, properties, characteristics and histogenesis were determined. On the basis ...
Transmetalation Mechanisms
(
Qatar University
, 1993 , Article)
Transmetalation is the stoichiometric replacement of the metals in a polymetallic target T with different metals from reagents called transmetalators, TM. Transmetalation at useful rates under mild conditions is an excellent ...
Detection Of Small Amounts Of Lard In Other Animal Fats
(
Qatar University
, 1993 , Article)
The composition of fatty acids at the b-position (B-FA) and a, a' -positions of the. triacylglycerol was used to establish new criteria for the detection of small amounts of lard in other fats. Determination of P-FA was ...
Seismic Risk Evaluation Based on Maximum Likelihood Technique Applied For the Red Sea Region
(
Qatar University
, 1993 , Article)
An analysis of the seismic risk is carried out for the Red Sea region for the recorded earthquakes in the area between 1. January 1913 and 31 December 1982. The maximum likelihood method was applied to determine the hazard ...
Tail Regeneration after Autotomy in the Geckonid Lizard Bunopus Tuberculatus
(
Qatar University
, 1993 , Article)
Tail regeneration in the geckonid lizard, Banopus tuberculatus was morphologically and histologically studied after induced atutomy. Seventy percent of the tail of each animal, by length, was removed by autotomy. Regeneration ...
Microbial utilization of some agricultural And agro-industrial waste products for the Production of single cell protein (scp).
(
Qatar University
, 1993 , Article)
The dried residues of com crop (com straw) were hydrolysed by 0.5 NH2SO4. Saccharomyces cerevisiae has been allowed to grow on media containing different concentrations of the com straw hydrolysate (CSH). The optimal ...
Constituents of plants growing in qatar xxiii. Flavonoids of francoeuria crispa
(
Qatar University
, 1993 , Article)
Investigation of the flavonoid constituents of Francoeuria crispa, resulted in the isolation and identification of four flavonoids: quercetin, qucrcetin-3-O-gIucoside, quercetin-7-0-glucoside and quercetin-3-methyl ether.