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Now showing items 41-50 of 60
Geologic setting of the St. Catherine basement rocks, Sinai, Egypt
(
Qatar University
, 1993 , Article)
St. Catherine area, some 900 km in size, is dominated by basement rocks Encompassing old continental gneisses, metasediments, greenstone belt, calc-alkaline granites (G-II-granites), rift-related volcanics (RV), and ...
Incidence and characterization of bacillus cereus isolated From egyptian foods.
(
Qatar University
, 1993 , Article)
In this study, 178 strains of Bacillus cereus were isolated from different Egyptian foods. Isolation was performed, using MYP and PEMBA media and confirmed by staining and biochemical tests. B. cereus occurred in 98% of ...
Aptian To Cenomanian Palynomorphs From The Qarun 2-1 Borehole, Western Desert, Egypt
(
Qatar University
, 1993 , Article)
Rich distinctive, miospore assemblages are recovered from four sidewall core samples obtained from the Kharita Member of Burg El Arab Formation in the Qarun 2-1 borehole located in the eastern part of the North Western ...
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 ...
A critical analysis of "harvest index"
(
Qatar University
, 1993 , Article)
The many ways in which harvest index ratio (HI) can be used are discussed. A selection of published values for HI are given. Attention is drawn to the confusion in calculating the HI such that some present methods of ...
Effect of plastic deformation on Corrosion of cadmium in 0.1 m sodium Sulphate solution
(
Qatar University
, 1993 , Article)
The present investigation was carried out to study the influence of prior plastic deformation and surface finish on the corrosion behaviour of pure cadmium in 0.1 M Na2SC>4 solution at 25° C. Cylindrical specimens were ...
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.
Histology And Development Of Argas (Argas) Hermanni (Ixodoidea: Argasidae) Salivary Glands
(
Qatar University
, 1993 , Article)
The anatomy and histology of Argas (Argas) hermanni salivary glands were studied during nymphal and adult development. The paired salivary glands consist of 2 alveolar types. Type I alveoli consist of several cells forming ...
Prenatal Development of the Guinea Pig Kidney Quantitative And Qualitative Morphology
(
Qatar University
, 1993 , Article)
The normal prenatal development of the guinea pig kidney was investigated utilizing quantitative and qualitative histologic methods and microdissection technique during the last of the gestation period (day 46 to day 66). ...
Amplitude Features Of Fast Compressional Waves In Porous Media For Zero-Offset Synthetic Seismograms
(
Qatar University
, 1993 , Article)
The seismic amplitude are clearly affected by the type of medium through which waves are propagated. A geologic model was designed to study the changes in'amplitudes of the seismic waves within several rocks of different ...