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السجلات المعروضة 31 -- 40 من 60
The Adjoint Problem Of A Modified Sturm-Liouville Boundary Value Problem
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Qatar University
, 1993 , Article)
The authors give the solutions of the eigenvalue equation that is associated with a modified Stum-Liouille problem. The discrete specturm and hence the resolvent will be obtained by means of different types of solutions ...
Lead-Induced Malformations and Kidney Destruction of Developing Chick Embryos
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Qatar University
, 1993 , Article)
Two doses of lead nitrate, 0.5 and 0.1 mg/egg, were injected into the eggs after 3 days of indubation. Lead nitrate increased mortality rate and decreased the body weight of developing embryos. The lead nitrate also decreased ...
Population biology of sparid fishes in qatari waters. 1 - reproductive cycle and fecundity of longspine seabream, Argyrops spinifer (Forskal)
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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 ...
Analytical Studies Of Some Controlled And Noncontrolled Drugs Of Abuse (II)
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Qatar University
, 1993 , Article)
Benzodiazepines, barbiturates, amphetamines and some other non-controlled drugs were identified by GLC and HPLC then confirmed by GC-MS techniques. Comparative studies and discussions on the results obtained by GLC and ...
Krein's Method For Singular Mixed Problems
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Qatar University
, 1993 , Article)
In this paper, the spectral relations of the Fredholm integral equation of the first kind for the mixed problems with singular kernel are obtained.
The amino acid composition of some Common marine algae from Qatar (Arabian Gulf)
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Qatar University
, 1993 , Article)
The most dominant twenty algal species representing the main three groups of benthic macroalgae, Chlorophyceae, Phaeophyceae and Rhodophyceae were collected from the coastal zones of the Qatar peninsula. The algae were ...
Amplitude Features Of Fast Compressional Waves In Porous Media For Zero-Offset Synthetic Seismograms
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Qatar University
, 1993 , Article)
The seismic amplitude are clearly affected by the type of medium through which waves are propagated. A geologic model was designed to study the changes in'amplitudes of the seismic waves within several rocks of different ...
Integration technique for neutron source standardization inside A cylindrical water tank
(
Qatar University
, 1993 , Article)
This work deals with the evaluation of neutron irradiation facility. Two (Pu-Be) sources and two (Ra-Be) sources are used. Integration technique by a BF3 detector for neutron source standardization is used. The necessary ...
The Reproducing Capacity of Gamma Irradiated Adults of Trogoderma Versicolor (Creutz)
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Qatar University
, 1993 , Article)
Male and female, Trogoderma versicolor (Creutz.) were irradiated by gamma radiation as newly emerged adults (12-24 hrs. after emergence). Males required higher doses than females to be sterilized and the reproductive ...
Growth and protein content of wheat kernels treated with three Growth regulators
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Qatar University
, 1993 , Article)
Alar, asulam or kinetin at different doses were sprayed on wheat plants and their effects on growth and protein of the developing kernels were investigated. Grain fresh matter was significantly increased in response to 200 ...