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السجلات المعروضة 761 -- 770 من 770
Stability of Logistic Autoregressive Model
(
Qatar University
, 2007 , Article)
In this paper we propose a Logistic Autoregressive Model, which is a special case of polynomial Autoregressive Model. The aim of this paper is to study and find the stability conditions of the above model by using a dynamical ...
Phospholipid Fatty Acids Compositions of Sponges from Qatar I- Haplosclerida
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Qatar University
, 2006 , Article)
The phospholipid fatty acid contents of six Haplosclerida sponges collected along Qatari ;ts, Arabian Gulf, were identified by coupling GC-MS experiments. More than hundred of rated and unsaturated fatty acids have been ...
Discrimination of Coastal Sediments around Qatar Peninsula, Using Remote Sensing Techniques
(
Qatar University
, 1999 , Article)
This paper aims at demonstrating the usedfulness of remote sensing techniques in identifying various types of coastal sediments around Qatar Peninusla. In this respect, Landsat-Thematic mapper (TM) multispectral data provide ...
Mossbauer Effect Study of Libyan Desert Silica Glass
(
Qatar University
, 1981 , Article)
The Mossbauer effect and X-ray fluorescence techniques are applied to study the Libyan Desert Silica Glass. The X-ray flourescence proved the existence of 13 elements in each sample of five glass types with differences in ...
Biochemical And Environmental Studies On Hepatoma Patients In Egypt
(
Qatar University
, 1994 , Article)
The present study was carried out on 102 hepatoma patients collected mainly from the National Cancer Institute, Cairo University, during the period 1988-1991 . Environmental and personal data were collected for each patient. ...
17- Hydroxylation Of Progesterone By Cunninghamella Echinulata On A Laboratory Fermentor Scale
(
Qatar University
, 1985 , Article)
The mircrobiological transformation of progesterone by a local isolate of Cunninghamella echiiiulata using a laboratory fermentor was studied. Progresterone (10-50 g/1) wetted by Tween 80 was added to 48-hour old culture ...
Changes in carbohydrate and nitrogen fractions during germination of fenugreek (Trigonellafoenum-graecum L.) seeds presoaked in GA3, growing under different osmotic potentials
(
Qatar University
, 1997 , Article)
Changes in carbohydrate and nitrogen fractions during seed germination of fenugreek under water stress and GA^ treatment were investigated. The germination percentage was reduced with the decrease in the osmotic potential ...
A Note on Norland Summability of Fourier Series
(
Qatar University
, 1982 , Article)
In this paper we consider point-wise summability in the Norlund sense of Fourier series by assuming
H(n) . F(n) = o (Pn) as n--+ oo, where (H(x) = d.x g(t) dt, g(t) is continuous, non-increasing, H(x) is slowly varying, ...
A Two-Point Boundary Value Problem for a Second Order Differential Equation with Parameter
(
Qatar University
, 1982 , Article)
Does Egypt Represent an Ecological Limit to Desiccation Tolerant Plants?
(
Qatar University
, 2006 , Article)
A search of arid areas adjacent to the Nile in Egypt revealed a notable lack of desiccation tolerant vascular plants on ecological sites on which they would be abundant in Kenya and further south in Africa. Relative water ...