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Plant phenology and its relation to the cool semi-arid condition of Sana'a
(
Qatar University
, 1997 , Article)
In the cool semi-arid highland areas of Sana'a a plant phenological study of forty two species revealed that there was one major
outburst of plant emergence corresponding with the first period of the heavy rainfall which ...
Survey of marine turtle nest sites in the UAE.
(
Qatar University
, 1999 , Article)
The United Arab Emirates is party to the Regional Convention for Co-operation on Protection of the Environment from Marine Pollution, and the Action Plan for the Protection and Development of the Marine Environment and ...
Coral Bleaching And Enso Anomaly : Was The Past Similar To The Present
(
Qatar University
, 1999 , Article)
Bleaching of reef corals is due to partial or total loss of symbiotic micro-algae as a consequence of environmental stress such as an oceanic warming linked to the ocean-scale hydroclimatic anomaly termed ENSO (El Nino ...
Population biology of sparid fishes in Qatari waters 2. Age, growth and mortality of black-banded bream, Mylio bifasciatus (forsskal)
(
Qatar University
, 1993 , Article)
Age, growth and mortality of black-banded bream (faskar) Mylio bifasciatus from the Arabian Gulf waters off Qatar were estimated. The study was conducted on 314 fish obtained from the trawl catch of Qatar National Fishing ...
Pullulan production from sugar beat molasses
(
Qatar University
, 1997 , Article)
Sugar beet molasses was used as the substrate for the production of pullulan with Aureobasidum pullulans ATCC 42023. In addition biomass, residual sugar and final pH of the culture medium were investigated. In comparing ...
Window Analysis Optimization Of Gas Chromatographic Separation Using Different Polarity Packed Columns
(
Qatar University
, 1996 , Article)
Window diagram theory has been described by Purnell and his research team in various publications. In this paper we apply this theory to optimize a separation of complex mixture containing propylene oxide, 1-hexene, ...
Thermal Acclimation In The Resting Metabolism Of The Nocturnal Gecko, Hemidactylus Flaviviridis
(
Qatar University
, 1996 , Article)
Hemidactylus flaviviridis was acclimated to two temperature regimes (20 and 30°C). The resting metabolic rates (ml g1 h"1) were determined at 20, 25,30 and 35°C, using constant pressure manometric respirometers. The 20°C- ...
Seismic reflection coefficient parameter-theoretical and Practical approach
(
Qatar University
, 1994 , Article)
In this study, the effect of porosity and pore filler on the reflection coefficient parameter (R), are well deduced and some mathematical expressions were developed. This leads to the establishment of new expression of (R) ...
Haemogregarines of geckos in egypt, together with a description of haemogregarina helmymohammedi n.sp.
(
Qatar University
, 1995 , Article)
Three species of geckos collected from various localities in Egypt were examined for protozoan blood parasites. Haemogregarines were reported in all the three species of geckos. Problems of the generic and specific ...
Evaluation of Some Local Egyptian Plants as a Source of Chlorophyll Pigments
(
Qatar University
, 1994 , Article)
Four plant materials viz. Spinacia oleracae Linn, (spinach), Beta vulgaris Limm (chard), Medicago sativa Linn, (alfalfa) and Petroselinum sativum Hoff. (parsely) were studied as local sources for the preparation of chlorophyll ...