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Mossbauer Effect Study of the Hyper fine Structure of the Different Phases of Iron in the Portland Cement Produced in Qatar
(
Qatar University
, 1981 , Article)
Various samples of the raw materials used in the manufacture of Portland cement in Qatar, the clinker produced and the cement itself were studied by using Mossbauer Effect and X-ray diffraction analysis in order to investigate ...
Petrogenesis And Tectonic Setting Of The Vqlcanic Suite West Of Wadi Bagharid South Eastern Desert, Egypt
(
Qatar University
, 1987 , Article)
The metavolcanic belt west of Wadi Bagharid, south Eastern Desert, Egypt is geologically investigated. Petrographically, the metavolcanics are subdivided into four rock varieties namely: metaandesites, metadacite-rhyodacite, ...
Structural Elements And Formation Parameters For Some Lower Cretaceous Sequences In The Western Desert, Egypt
(
Qatar University
, 1987 , Article)
The Lower Cretaceous sequences in the northern part of the Western Desert has been penetrated by many of drilled bore—holes adopted by different oil companies. It was encountered at depths ranging from 1200 to 3500 m. The ...
Effects Of Gamma Radiation On The Mating Activity Of The Mediterranean Fruit Fly. Ceratitis Capitata Weid
(
Qatar University
, 1987 , Article)
Full grown pupae of the Mediterranean fruit fly, Ceratitis capitata Weid were exposed to three doses of gamma radiation, 50 70 and 90 gray. The effects of irradiation on the fly mating activity were studied. There was no ...
A Simple Diagram For Gravity Interpretation By Gradients For A Lateral Varying Formation
(
Qatar University
, 1984 , Article)
A simple diagram is constructed for the interpretation of the gravity anomaly arising from a formation of linear density variation. The diagram can be easily used if the horizontal gradient is also known. With the help of ...
On the application of arabian gulf water in irrigation: A future possibility
(
Qatar University
, 1987 , Article)
Open seas waters have a chlorinity (Cl%o) of 35%o. Chloride and sodium are the dominant ionic species in sea water; where their gravimetric contents are 89.98 and 77.39% of total anions and cations, respectively. Sodium ...
Some Properties Of Class Zw
(
Qatar University
, 1987 , Article)
In paper |5| it was established Ilic inajorant w. Bill ex.iinples or a func'lion f £ Zw'were not coiistruclecl. In Illis |)is()er, in llie case of a snioolli closed curve, an example of such a function is constructed.
On Existence Of Two Real Periodic Solutions Of Differential Equations Of Riccati Type
(
Qatar University
, 1986 , Article)
In this paper we consider the two equations
z^z^p^z+r^t), (*) z^z^ptOz+r^t), (••)
where z € C, p, r) and r^ are real, continuous and periodic with period T.
It was shown ...
On Dirichlet Problem With Singular Integral Boundary Condition
(
Qatar University
, 1983 , Article)
In this paper a Dirichlet problem, with singular integral condition, is studied. It is shown that such problem can be reduced to a regular equation which allows us to construct the solution.
Effects of gamma radiation on the activity of the mosquito culex pipiens L. II. Effects on the sexual vitality of the mosquito
(
Qatar University
, 1988 , Article)
The effects of 3 gamma doses on the sex vitality of the mosquito Culex pipiens L. were studied after irradiation of the larvae, pupae or newly emerged adults.
No significant effect on the sex attraction was obseived when ...