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Constituents of plants growing in Qatar - Part XIX. Flavonoids of Glossonema edule N. E. Br.
(
Springer Nature
, 1990 , Article)
The study of the flavonoids of the unripe fruits of Glossonema edule, resulted in the isolation and identification of apigenin 6,8-di-C-glucoside (violanthin) and luteolin 7-O-glucoside. © 1990 Kluwer Academic Publishers.
Dynamic behavior of mixer-settlers
(
Wiley Subscription Services, Inc., A Wiley Company
, 1990 , Article)
A mathematical model has been developed to simulate and predict the dynamic behavior of liquid extraction counter current operations in mixer-settler units. Murphree efficiency has been included in the model. The behavior ...
Constituents of plants growing in Qatar XVII anti-inflammatory and cytotoxic activities of extracts of thirty indigenous species
(
Taylor & Francis
, 1990 , Article)
Thirty plants, indigenous to Qatar, were extracted separately with hexane, chloroform and ethanol. The dried extracts were examined for potential anti-inflammatory activities both in vitro by their ability to inhibit ...
Vegetation composition of a maritime salt marsh in Qatar in relation to edaphic features
(
Blackwell Publishing Ltd
, 1990 , Article)
Coverpercentage values for plant species were estimated using the line-intercept method along two belt transects starting at the lower mangrove frontier and ending at the upper height of the salt marsh. Twelve perennial ...
Inhibitive Effect of Butyltin Trichloride on Dissolution and Localized Corrosion of Aluminium in Sodium Hydroxide and Hydrochloric Acid
(
WILEY-VCH Verlag
, 1990 , Article)
The dissolution of aluminium in sodium hydroxide and hydrochloric acid in the presence of butyltin trichloride as corrosion inhibitor has been studied by hydrogen evolution and thermometric methods. Experimental findings ...
Helminth parasites of fishes from two inland lakes in Egypt
(
Nihon Kiseichu Gakkai
, 1990 , Article)
Results of helminthological examination of 1243 fishes, caught from two inland lakes, with unique and contrasting hydrobiological features at Fayoum Governate in Egypt, are presented.
General incidence of trematodes, ...
Guaianolides from Centaurea sinaica
(
Elsevier
, 1990 , Article & Report)
Three sesquiterpene lactones were isolated from the aerial parts of Centaurea sinaica: amberboin, chlorohyssopifolin A and sinaicin. The latter is reported for the first time.
A review of process and production in SL studies
(
Qatar University
, 1990 , Article)
Performance of Greenhouses in The Arabian Gulf
(
Qatar University
, 1990 , Article)
This work is devoted to the gaining of insight into the operation of environmentally controlled greenhouse in hot and humid climates. Field data inside and outside the greenhouse, namely: solar radiation, dry and wet bulb ...