بحث بسيط
السجلات المعروضة 11 -- 20 من 205
Approximate Solution For A Problem Of Propagation Of Elastic-Plastic Wave In The Half-Space
(
Qatar University
, 1984 , Article)
In this paper, we consider a half-space occupying an elastic-plastic medium. Treatments were carried out under the assumption of perpendicular load, on boundary which propagates with a constant speed D.
The assumption ...
New Potassium/Argon Ages For The Volcanic Rocks Of Halul Island (Qatar)
(
Qatar University
, 1988 , Article)
The only rocks of igneous origin known to be exposed in Qatar are those of Halul and Shra'Auh Islands. They occur within a salt diapir and the age of these rocks is uncertain. They have generally been assigned to the Hormuz ...
Seasonal Fluctuation Of Non-Rhizosphere Soil Fungi In Wheat Fields In Egypt
(
Qatar University
, 1983 , Article)
The study aims at intensive survey of fungal floras of non-rhizospheric soil in wheat fields in El-Minya Governorate over the periods December 1976 - May 1977 and December 1977 - May 1978.
At 28°C, using 1% glucose-Czapek's ...
Interpretation Of Three Dimensional Seismic Data In Delineating The Structural Elements At Ras Budran Oil Field, Gulf Of Suez, Egypt
(
Qatar University
, 1989 , Article)
Structural evaluation in Ras Budran oil field was achieved by using the state of art geophysical technology, represented by the 3-D seismic data. Integrated together with the borehole geological and geophysical data. The ...
The electrical and optical properties of poly (4-ethylidene-l, 3-cyclopentylene vinylene)
(
Qatar University
, 1989 , Article)
The intrinsic viscosity, electrical conductivity and IR absorbance were measured for the sample of poly (4—ethylidene—1, 3—cyclopentylene vinylene). The sample is strongly oxidized in air. Under vacuum the activation energy ...
Mycoflora associated with dry dates in upper egypt ii. Osmophilic fungi and test of osmophilic ability
(
Qatar University
, 1988 , Article)
19 fungal species which belong to 8 genera were collected from 30 dry date samples of which 9 species appeared on all sucrose concentrations (20%, 40% and 60%) namely, Aspergillus amstelodami, A. niger, A. raber, A. sydowii, ...
On Some Shrinkage Techniques For Estimating The Parameters Of Exponential Distribution
(
Qatar University
, 1986 , Article)
A variety of shrinkage methods have been proposed for estimation of some unknown parameter by considering estimators based on a prior guess of the value of the parameter. We compare some of the shrunken estimators for the ...
Completeness Of Distributive P-Algebras
(
Qatar University
, 1988 , Article)
According to the triple characterization of distributive p-algebras which is given by T. Katrinak, we characterize the completeness of distributive p-algebras.
Water Relations Of Some Woodlice (Oniscidea) From Arid And Mesic Environments
(
Qatar University
, 1987 , Article)
The desert woodlouse Porcellio evansi from Bahrain and Qatar has a transpiration rate as low or lower than recorded from other desert species. The synanthropic mesic Porsellionides pruinosus has a much higher rate, while ...
Histological And Histochemical Studies On The Decidua And The Uterine Glands During Early Pregnancy In The Rat (Rattus rattus)
(
Qatar University
, 1986 , Article)
Histological and histochemical studies were carried out on the decidua and uterine glands in the uteri of pregnant rats 'Rattusrattus' between 129 hours post.-coitum (p.c) and day nine of pregnancy. Decidualization was ...