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Now showing items 101-110 of 122
The morphology of synhimantus (dispharynx) passeri sp. Nov., nematoda (acuariidae)
(
Qatar University
, 1990 , Article)
A new species of the nematode genus Syahimantus recovered from Passer domesticus niloticus at Cairo is described using both light and scanning electron microscopy. The taxonomy of the new species is discussed and compared ...
أنماط التنشئة الأسرية السائدة في المجتمع العربي
(
Qatar University
, 1990 , Article)
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 ...
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.
Stratigraphy and paleobathymetry of upper cretaceous-lower tertiary exposures in beris-doush area, kharga oasis, western desert, Egypt.
(
Qatar University
, 1990 , Article)
The detailed study of the Upper Cretaceous-Lower Tertiary succession exposed in Beris-Doush area enabled the subdivision of this succession into a number of rock units well known in the Nile Valley facies area in Egypt. ...
العوامل المؤثرة في إكتساب اللغة الثانية وكيفية تحسين تعليمها
(
Qatar University
, 1990 , Article)
يهدف هذا البحث إلي استقصاء أو العوامل التي تؤثر في اكتساب اللغة الثانية (ل 2).كما يهدف إلى التعرف على طبيعة عملية اكتساب ل 2 ومعرفة الفروق بين اكتساب ل 2 واكتساب اللغة الأولى (ل ا). كما يهدف البحث إلى الوصول إلى بعض الأسس ...
جدوي برامج محو الأمية: دراسة من وجهة نظر الدراسين والدراسات بالمملكة العربية السعودية
(
Qatar University
, 1990 , Article)
أهداف دور القرآن الكريم كما يراها الدراسون والدراسات
(
Qatar University
, 1990 , Article)
Electrophoretic patterns of proteins and enzymes in paramphistomum (p.) Microbothrium and carmyerius gregarius
(
Qatar University
, 1990 , Article)
The electrophoretic patterns of total soluble proteins, esterases, Glutamic-oxaloacetate transaminase (GOT) and malate dehydrogenase (MDH) are determined in two paramphistomes, infecting cows and buffaloes, namely ...
Stochastic Classes Of Life Distributions
(
Qatar University
, 1990 , Article)
The concept of stochastic ordering of random variables is used to characterize the behaviour of the life length variables. This leads to some new classes of ageing namely, the stochastic classes of life distributions. The ...