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Evidence for some prostaglandins in Allium sativum extracts
(
John Wiley & Sons, Ltd.
, 1988 , Article)
Homogenized garlic (Allium sativum Linn.) was extracted successively with organic solvents and the prostaglandin-rich fraction separated. Fractionation of the extract with column chromatography was performed. TLC of the ...
The Influence of Cation Substitution on the Magnetic Behaviour of Magnesium Ferrite
(
WILEY-VCH Verlag GmbH & Co.
, 1989 , Article)
New polycrystalline specimens of the ferrites Mg1.5Fe1Si0.5O4, Mg1.5Fe1Ge0.5O4, Mg1.5Fe1Ti0.5O4 and Mg1.66Fe1Sb0.33O4 have been prepared and studied by nuclear gamma ray resonance technique, over a wide temperature range. ...
Effects of herbicide and timing of removal on interference between barley and weeds
(
Blackwell Publishing Ltd
, 1988 , Article)
Field experiments were done during the rainy season of 1984�85 and 1985�86 at Harma, Qatar. A weed survey of barley fields was conducted with the primary purpose of identifying the weed vegetation present. The effects of ...
Diffusion of saturated hydrocarbons in low density polyethylene (LDPE) films
(
Wiley Subscription Services, Inc.
, 1989 , Article)
The diffusion coefficients at zero penetrant concentration, D0, of n-heptane, n-heptane, n-octane, n-decane, and 2,2,4-trimethylpentane (TMP) in LDPE were obtained in the range of 25–50°C, using the desorption method. The ...
Substituted phenols as corrosion inhibitors for copper in nitric acid
(
WILEY-VCH Verlag GmbH
, 1988 , Article)
The dissolution of copper in nitric acid solution in the presence of resorcinol, o, p-aminophenols, catechol, o-cresol and salicylaldehyde as corrosion inhibitors has been studied by galvanostatic polarization and weight ...
On the Valence State of Iron in Sr0.52+Ca0.52+Fe0.54+ Me0.54+O32−
(
WILEY-VCH Verlag GmbH & Co.
, 1989 , Article)
Powder samples of Sr0.5Ca0.5Fe0.5Me0.5O3 (Me = Co, Zr or Mn) and Sr0.3La0.7FeO3 are investigated by X-ray diffraction and Mossbauer effect spectroscopy.
Analysis of the completely ordered spectra suggested three kinds ...
Hydrography Of The Western Part Of The Arabian Gulf
(
Qatar University
, 1986 , Article)
The hydrographic conditions in the western part of the Gulf, from Kuwait to UAE, were studied. Water temperature, salinity, sigma T and water masses were determined for two cruises. The first cruise was carried out from ...
On The Earthworm Fauna And Distribution In The State Of Qatar
(
Qatar University
, 1986 , Article)
This paper is a preliminary account of the earthworms collected in February and March, 1986, from 10 localities in Qatar. Five species, Amynthas corticis (Family Megascolecidae), Dichogaster bolaui (Family Octochaetidae), ...
A Special System Of Boundary Value Problems
(
Qatar University
, 1987 , Article)
In this paper we introduce a special system of boundary value problems and give a method for solving it. Then we give a detailed application of this method to a system of boundary value problems of Hilbert type.
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 ...