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السجلات المعروضة 11 -- 20 من 3404
X-Ray And Electron Microprobe Analysis Of Some Plagioclases From The Jabal Abu Safiyah Intrusion
(
Qatar University
, 1992 , Article)
The Jabal Abu Safiyah is a layered intrusion, which was emplaced within volcanosedimentary rocks. It extends in an arc for about 15 km and displays clear layering. The lower zone plagioclases were studied by electron ...
Apical dominance in vicia faba l.
(
Qatar University
, 1983 , Article)
A side-effect of plant surgery was an interference with apical dominance. From the results of three experiments involving plant surgery, decapitation and the usage of "C-IAA, it appeared that the movement of the apically ...
Optical Properties Of Oxidated Blown Asphalt Films
(
Qatar University
, 1996 , Article)
Films of purified blown asphalt of high grades of oil and the accompanied adulterated particles derived from its manufacturing process, that is, it was purified 98%. This study focused on optical properties in the wavelength ...
Fixed Point Theorems in Topological Spaces
(
Qatar University
, 2000 , Article)
A couple of theorems for a pair of self-maps on a topological space have been obtained using which certain fixed point theorems in the literature for pairs of maps satisfying contractive type conditions have been deduced.
In ...
An Extension of the Szasz-Mirakyan Operator on the Whole Real Axis
(
Qatar University
, 2000 , Article)
The aim of this paper is to present a new extension of the Szasz-Mirakyan operator n the whole real axis, and to give its convergent approximation theorem.
Ophioglossum polypyllum, A. Braun a new record for Qatar
(
Qatar University
, 1995 , Article)
Observations on some hydrochemical aspects of the United Arab Emirates waters along the Arabian Gulf and the Gulf of Oman.
(
Qatar University
, 1997 , Article)
Surface and bottom water samples were collected from the United Arab Emirates waters along the Arabian Gulf and the Gulf of Oman during the period from October 1993 to September 1995. Samples were analyzed for temperature ...
Abscisic acid, relative water content and water use efficiency of wheat plants In relation to grain pretreatment by phytohormones and irrigation with sea water
(
Qatar University
, 1999 , Article)
Irrigation of wheat plants with sea water (10% and 25%) led to significant increase in free and bound ABA in the leaves, especially at 25%. The relative water content (RWC) of the sea water irrigated plants was either ...
Heterocyclic Aminoacrylate Esters Of Potential Biological Activity
(
Qatar University
, 1985 , Article)
This work describes the synthesis of N-substituted piperidyl 2-benzoxazole acrylates (la-d); 2-benzothiazole acrylates (2a-d); 2-furyl acrylates (3a-d) and 2-thiophene acrylates (4a-d). The esters of 3-quinuclidyl (Ie, 2e, ...
Evaluation of quaternary aquifer between qena and luxur. (Nile Valley, Egypt)
(
Qatar University
, 2001 , Article)
In order to evaluate the hydrogeological setting of the Quaternary aquifer and the related geological structures controlling its characteristics. A total of 50 vertical electrical soundings (VES.s) were conducted along 13 ...