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Now showing items 161-170 of 451
Calculation Of Mass Yield Distributions In Fission Induced By High Energy Protons
(
Qatar University
, 1991 , Article)
An analytical expression is obtained for the mass-yield distribution in fission induced by high-energy protons, using a two-step model. In the first step, the incident proton penetrates the target nucleus, knocking out ...
Heterocyclo-sulpha drugs: part x. Novel 5-imino-a2-pyrazolin-4-ditfflocarbamyl-s-azo dyes as antimicrobial agents
(
Qatar University
, 1994 , Article)
Synthesis of a series of novel azo-sulpha drugs as 5-imino-3-methyl-l-phenyl-A -pyrazolin-4-dithiocarbamyl-s-azo dyes (I-XV) are described by the reaction of 4-sulphamoyl and/or sulphonyl diazonium chloride with ...
Synergistic effect of amino acids and chloride ion on adsorption On copper metal
(
Qatar University
, 1994 , Article)
The effect of adsorption of a- alanine, P-alanine, DL-aspartic, L-glutamine, iso-leucine and L-lysine in 1 M HC1 solution on the corrosion of copper has been studied using the potentiokinetic technique. The examined amino ...
On Two New Haemogregarines (Protozoa: Apicomplexa) From Colubrid And Elapidae Snakes In Egypt
(
Qatar University
, 1996 , Article)
Two species of colubrid and elapid snakes collected from different localities in Egypt were examined for protozoan blood parasites. TWo new species of Haemogregarina senso lato are described: Haemogregarina garnhami n.sp. ...
Records of Marine Interstitial Hymenostomatid Ciliates from the Jubail Marine Wildlife Sanctuary, Saudi Arabia
(
Qatar University
, 1999 , Article)
Sediment samples were collected at low tide from various localities of Jubail Marine Wildlife Sanctuary in the Arabian Gulf during 1996-1997 for the study of the marine interstitial ciliate fauna of the Sanctuary. Eleven ...
On A Relation Between Two Absolute Summability Methods
(
Qatar University
, 1997 , Article)
In this paper we prove a theorem concerning a relation between the summability methods |R,pn,qnlJt and |R,un|fc , k > 1 , which generalizes a result of Bor [2].
The effects of sea water immersion on the mechanical properties of low density polythylene
(
Qatar University
, 1997 , Article)
The effects of immersion of low-density polyethylene (LDPE) m seawater for times of up to one year were studied using mechanical and ultrasonic techniques. The studies were carried out in the laboratories of the Faculties ...
Senso-Neuroendocrine Cells Within The Cerebral Ganglion Of The Earthworm Aporrectodea Caliginosa
(
Qatar University
, 1992 , Article)
Ciliated neurones of probable endocrine function are present inside and outside the cerebral ganglion of the earthworm Aporrectodea caliginosa. Cell fibers contain clusters ofsynaptoid vesicles in regions adjacent to the ...
Investigations on the growth abnormalities of medicago sativa l. Under field conditions
(
Qatar University
, 1996 , Article)
Morphological growth abnormalities were pursued and studied in field-grown alfalfa (Medicago sativa L.) in Al-Kharj agricultural area, south east of Riyadh. Significant differences between normal and abnormal plants were ...
Effect Of Ca++ And Mg++ On The Binding Of Cytoplasmic And Nuclear Estradiol Receptors In Breast Cancer Of Female Patients
(
Qatar University
, 1993 , Article)
Specific estradiol receptors were quantitatively determined in the cytosol and nuclear fractions of four cancerous breast tissues and one normal uterus. Validated methods are described for estradiol receptor assay. The ...