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Now showing items 91-100 of 122
Geology, Petrography, Geochemistry And Petrogenesis Of The Egyptian Younger Granites
(
Qatar University
, 1990 , Article)
One hundred and thirty nine new chemical analyses of major and trace elements for 26 plutons and masses pertaining to the Egyptian Younger Granites are presented together with the chemical analyses of 13 biotites, 32 ...
Glaciations In The Arabian Peninsula
(
Qatar University
, 1990 , Article)
Glaciations affected the Arabian Peninsula three times. This was during the Late Ordovician, the Late Carboniferous-Early Permian, and the Pleistocene. Recorded evidence of Paleozoic glaciations in Arabia, includes tillites, ...
Synthesis And Spectroscopic Properties Of Some Mixed-Ligand Complexes Of Nickel (II), Copper (II), Zinc (II) And Palladium (II) With Biologically Active Nitrogen-Sulphur Containing Molecules
(
Qatar University
, 1990 , Article)
The reaction of the biologically active complexes, chloro-2-acetylpyridinehyd-razinecarbothiopiperidinamide metal (II) and chloro-2-acetylpyridinecar-bothiomorpholinamide metal (11),^, (M=Ni (II), Cu (II), Zn (II) and Pd ...
New Contributions To The Geology, Geochemistry And Tectonic Setting Of The Aswan Granites, Southern Egypt
(
Qatar University
, 1990 , Article)
The Aswan granitic rocks occupy a region in southern Egypt between the stable Archaean craton of the south Western Desert and the less stable Pan-African belt of the south Eastern Desert. They include light-grey medium ...
Modelling Of The Basement Surface Of Siwa-Qattara Depression Area, Northern Western Desert Of Egypt
(
Qatar University
, 1990 , Article)
Modelling study of the basement surface of Siwa-Qattara Depression area was done through the calculation of basement depth for 62 selected points using gravity interpretation methods.
The constructed basement relief map ...
Growth and production of tropane alkaloids by cell suspension cutures of hyoscyamus albus L.
(
Qatar University
, 1990 , Article)
Cell suspension of Hyoscyamus albus L. were investigated for growth and production of tropane alkaloids in three different media. The effects of sucrose concentration and initial pH were also studied. 2,4- Dichlorophenoxyacetic ...
Towards a prospective transplantation of the local mangrove avicennia marina (forssk.) Vierh. Growing on coast of qatar i. Ecophysiological performance of juveniles.
(
Qatar University
, 1990 , Article)
A population sample of propagules was collected at random from average size A. marina trees growing at "Dhakhira" (Qatar). This sample was then divided into subsamples which were used to detect the effects of light intensity, ...
Metabolic Effects Of Cyproterone Acetate And Corticosterone In The Chicken Callus Domesticus
(
Qatar University
, 1990 , Article)
The metabolic effects of corticosterone were compared with those of
cyproterone acetate , a steroidogenic inhibitor with suggested corticoid-like
effects. Corticosterone significantly increased serum levels of ...
Comparative Development Studies On The Lateral Canal System In Cyprinus Carpio And Gambusia Affinis Affinis
(
Qatar University
, 1990 , Article)
The lateral line canals and the neuromasts situated inside their lumina are described in two fishes differing in their feeding habits. There are 20 canal neuromasts in the bottom feeder Cyprinus carpio, while in the surface ...
Inherritance of growth and other agronomic traits in two oat (avena sativa l.) Crosses
(
Qatar University
, 1990 , Article)
Evaluating the inheritance of growth traits should assist plant breeders in determining
its usefulness as a selection criterion for grain yield improvement. Three oat cultivars,
'Stout', 'Lodi' and 'Marathon' were chosen ...