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Now showing items 181-190 of 1381
Biochemical studies on the blood and tissue components of the common Egyptian toad bufo regularis
(
Qatar University
, 1995 , Article)
The effect of insulin and/or cortisone on the blood, serum and tissue levels of glucose, glycogen, pyruvic acid, lactic acid cholinesterase, alkaline phosphatase, aspartate amino transferase (AST), alanine amino-transferase ...
Effects Of Chemical Pesticides On The Gravid Females And Stadia Of The Woodlouse, Porcellio Scaber (Latreille) (Isopoda, Oniscidea)
(
Qatar University
, 1991 , Article)
Studies were made on the mortality rates of the gravid females, and on the survival and growth rates of the stadia of the woodlouse Porcellio scaber (Latreille) exposed for a period of 21 days to sub-lethal concentrations ...
Synthesis of some new oximes, thiocarbamates, pyrazolyloxy, isoxazolyloxy, Pyrmidyloxy and pyridyloxy quinolines
(
Qatar University
, 1994 , Article)
The reaction of 1 or its corresponding chalcones 3a-c with hydroxylamine in boiling pyridine gave the oximes 2 or 5a-c respectively in almost quantitative yield. When both 2 and 5a-c were reacted with phenylisothiocyanate, ...
The Study Of Compaction Using Seismic Velocity Analyses In East - Baghdad Oil Field (Mid - Iraq)
(
Qatar University
, 1995 , Article)
The present study deals with estimation of empirical equations relating travel time (T) and transit time (T.T) with depth (Z) which are expressed in the forms :
T = BZN + A, log T. T. = - s log Z + H
For this aim, ...
Spore Colour Index And Organic Thermal Maturation Studies On The Pliocene Sediments Of The El Qara-2 Borehole, Nile Delta Area, Egypt
(
Qatar University
, 1996 , Article)
Eight conventional core samples from the El Qara-2 well, situated in north central Nile Delta area, Egypt, have been palynologicaly investigated for determining the thermal maturity of the Pliocene Abu Madi and Kafr El ...
Multielement Analysis Of Suspended Particulates In Doha (Qatar) Air Before And During The Gulf War
(
Qatar University
, 1994 , Article)
Efforts have been made to study the effect on Qatar atmosphere from the burning of Kuwait oil fields during the Gulf war. Analysis of suspended air particulates was done by X-ray fluorescence technique. Eight elements were ...
Ultrastructural Study Of Type "B" Neurosecretory Cells In The Earthworm Nervous System
(
Qatar University
, 1991 , Article)
Neurosecretory cell types Bi—B5 are widely distributed throughout the cerebral, subesophageal, nerve cord and peripheral ganglia of the oligochaete Aporrectodea caliginosa, Lumbricus terrestris, Eisenia foetida, Octolasion ...
The Effect of Cutting Height on Forage Yield and Performance of Alfalfa Cultivars
(
Qatar University
, 1999 , Article)
Six exotic alfalfa (Medicago sativa L.) cultivars were evaluated for their forage yield performance and persistency under different cuttings heights during 1991/1992 in UAE. Cultivars revealed a highly significant difference ...
Studies On Some Fetal Rat Organs Following Maternal Hyperthermia
(
Qatar University
, 1993 , Article)
The present investigation was carried out to determine the histological changes in brain, liver and kidneys of rat fetuses maternally heatstressed at early stage of pregnancy to either high "spiking" temperature of short ...
Dominance Value And Community Production Of Desert Arthropoda In Qatar
(
Qatar University
, 1999 , Article)
Diurnal sampling of epigeal Arthropoda from different desert habitats in Qatar was carried out at the end of the summer season (October) and in spring (April) of 1995, 1996 and 1997. Dominance values of the species collected ...