Browsing QU Ceased Journals by Title
Now showing items 793-812 of 2240
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Phytoplankton In An Area Of Multi-Polluting Factors West Of Alexandria, Egypt
( Qatar University , 1987 , Article)A year cycle of phytoplankton community in polluted inshore area of the Egyptian Mediterranean water, west of Alexandria, was followed. Seasonal and regional variations of the physico-chemical characteristics were studied ... -
Plant diversity, dispersion, community similarity and vegetation description in united arab emirates. I. North western area
( Qatar University , 1995 , Article)Papers presented at The gulf symposium on Environmental biology, University of Qatar, 7-9 May 1994 *********** Plant population patterns in six natural communities (A-F) in the northern part of the UAE were studied. The ... -
Plant diversity, dispersion, community similarity, and vegetation description in united arab emirates. II eastern coast
( Qatar University , 1995 , Article)Papers presented at The gulf symposium on Environmental biology, University of Qatar, 7-9 May 1994 *********** The vegetation on the eastern coast of UAE was studied in 3 undisturbed sites. Dispersion, species-area, and ... -
Plant growth, metabolism and adaptation in relation to stress conditions v. Effects of salinity on the fatty acids of germinating flax, cotton and castor bean seeds
( Qatar University , 1987 , Article)The same three fatty acids were detected in flax, cotton and castor bean seeds: myristic, plamitic and oleic. In addition, linoleic was found in flax and lauric and stearic in castor bean. The seeds were germinated over ... -
Plant growth, metabolism and adaptation in relation to stress conditions XII. Carbohydrate and acid accumulation in phaseolus vulgaris and zea mays stressed with sodium sulphate
( Qatar University , 1990 , Article)Phaseolus vulgaris and Zea mays seedlings and plants were cultured on quarter-strength Hoagland nutrient medium with or without increasing concentrations of Na^SO^. Sodium sulphate increased the levels of reducing sugars ... -
Plant growth, metabolism and adaptation in relation to stress conditions. Vi. Differential effects of sodium sulphate on growth and element content of phaseolus vulgaris and zea mays
( Qatar University , 1989 , Article)Seeds of Phaseolus and Zea were germinated and then cultured either in Hoagland nutrient solution (1/4-strength) by itself or in combination with different concentrations of Na^SC^. Salinization induced, in general, varied ... -
Plant growth, metabolism and adaptation in relation to stress conditions. Vii. Respiration, nitrogen and proline contents in french bean and maize plants as influenced by salinity
( Qatar University , 1989 , Article)Carbon dioxide production by seedlings, whole plants and leaves of French bean and of maize showed progressively greater increases with increasing concentrations of Na2S04 added to the basal medium. Also, in response to ... -
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 ... -
Plant Population Density Effects On Yield Of Sorghum Grown In A Dry-Land Farming System
( Qatar University , 1996 , Article)Plant population studies in arid regions are very sparse and not well documented. A prerequisite in growing a successful sorghum (Sorghum bicolor [L.] Moench) crop is to obtain an adequate plant population. The response ... -
Planting Date Effect On Growth Characters And Yield Of Sorghum Under A Dry Farming-System In An Arabian Gulf Environment
( Qatar University , 1996 , Article)Irrigated crop production in Qatar is a risky enterprise due to extreme weather conditions. Temperature is sufficiently warm to allow planting of grain sorghum [Sorghum bicolor (L.) Moench] from Aug through to Oct. Crops ... -
Playing with words while Africa is ablaze -- an overview of South African Literature.
( Qatar University , 1997 , Article) -
Pliocene Coralline Algae, South Of Safaga (Red Sea, Egypt)
( Qatar University , 1984 , Article)Coralline algae are highly abundant in the Pliocene succession of the area south of Safaga (Red Sea, Egypt). The articulated corallines (Corallinoideae) are represented here by a single genus, Amphiroa. The crustose coralline ... -
Point-Wise Summability Of Fourier Series And Its Related Series In The Norlund Sense
( Qatar University , 1985 , Article)In this note we consider the point-wise summability of Fourier series in the Norlund sense by extending a theorem of Lebesgue [ 6 ] . We also consider analogous theorems of our extension to derived Fourier series, and ... -
Pollen Morphology of some Cultivated Varieties of Strawberry
( Qatar University , 1999 , Article)Pollen grains of twelve cultivated varieties of strawberries grown in Egypt were morphologically studied using both light microscopy and SEM observations. These varieties include eleven cultivars of Fragaria x ananassa ... -
Pollen Morphology Of The Family Boraginaceae In Qatar
( Qatar University , 1995 , Article)The pollen morphology of six species belonging to six genera of Boraginaceae in Qatar have been investigated by LM and SEM. The examined species proved to be eurypalynous, having different morphological types and can be ... -
Pollution Analysis and Control in Petroleum Refineries
( Qatar University , 1990 , Article)Air, liquid and noise emissions from different equipment in petroleum refineries have been analyzed. Most data have been correlated or tabulated in order to make possible using them in estimating the impact of the different ... -
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 ... -
Population biology of sparid fishes in qatari waters 3. Reproductive cycle and fecundity of black-banded Seabream, mylio bifasciatus (forsskal)
( Qatar University , 1994 , Article)The reproductive cycle, gonads maturation, gonado-somatic indices (GSI) and fecundity of black-banded seabream Mylio bifasciatus from the Arabian Gulf waters off Qatar were investigated. Bi-weekly samples representing all ... -
Population biology of sparid fishes in qatari waters : 4. Growth and mortality of longspine sea bream (argyrops spinifer)
( Qatar University , 1995 , Article)Age, growth and mortality of longspine scabrcam, Argyrops spinifer in the Arabian Gulf waters off Qatar were investigated. The study was conducted on 664 fish obtained from Qatar National Fishing Company. The results ... -
Population biology of sparid fishes in qatari waters. 1 - reproductive cycle and fecundity of longspine seabream, Argyrops spinifer (Forskal)
( Qatar University , 1993 , Article)The reproductive cycle, gonads maturation, gonado-somatic indices (GSI) and fecundity of longspine seabream Argyrops spinifer from the Arabian Gulf waters off Qatar were investigated. Bi-weekly samples representing all age ...