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Now showing items 71-80 of 86
Effects Of Gamma Radiation On The Sexual Attraction Of The Mediterranean Fruit Fly. Ceratitis Capitata Wied
(
Qatar University
, 1987 , Article)
The Mediterranean fruit (ly, Ceratitis capitata Weid, was gamma irradiated as full grown pupae with 50, 70 and 90 gray. The produced adults were examined for their attractiveness to the non irradiated (normal) other sex. ...
التربية البيئية في الفكر والمنهج الجغرافي
(
Qatar University
, 1987 , Article)
تعتبر التربة البيئية ركيزة من ركائز المناهج العلمية للفكر الجغرافي ، فالمناهج الجغرافية المعاصرة مبنية على أساس الفهم العميق للعلاقات التكاملية بين مكونات النظم الأيكلوجية . فالجغرافيا كعلم ، تبرز ما بين البيئة والإنسان ...
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 ...
أسس التدريس ونظرياته
(
Qatar University
, 1987 , Article)
Vibrational Analysis Of TaBr5
(
Qatar University
, 1987 , Article)
Vibrational analysis for TaBr5 is achieved on the basis of D3h symmetry and employing GF matrix method. Each vibration is quantitatively assigned according to the calculated values of the potential energy distributions. ...
The effect of doping crystals of tgs with some di- and trivalent ions on its: (i) dielectric constant and a.c. Conductivity
(
Qatar University
, 1987 , Article)
The problem of the existence of a new ferroelectric phase transition at low temperatures in TGS crystals is discussed. The influence of some inorganic divalent and trivalent ions presented in the lattice of TGS on dielectric ...
Spectroscopic Studies On Some Methylphosphonothioic Diamides And Related Compounds
(
Qatar University
, 1987 , Article)
A series of methylphosphonothioic diamides MrP (S) (NHR)., ( R = Mr, pr' and Bu') and some related compounds viz, PhP(S)(NHBu)a ,P1^P(S) ( NHCHJ'h ) arc preparpd and their infrared, n.m.r. and mass spectra arc- recorded. ...
Preliminary Studies Of The Tidal Currents Near Doha
(
Qatar University
, 1987 , Article)
A systematic program for current observations was planned by the Department of Marine Sciences, University of Qatar to cover the Qatar; waters. The tidal currents were studied by analysing the data obtained from mooring ...
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 ...
أسلوب التحليل البعدي لنتائج البحوث والدراسات السابقة
(
Qatar University
, 1987 , Article)