Search
Now showing items 141-150 of 1388
Production Of Extracellular Enzymes By Some Soil Yeasts
(
Qatar University
, 1997 , Article)
This study investigated the ability of soil yeasts, Geotrichum candidum, Geotrichum capitatum and Williopsis californica to produce extracellular enzymes (amylase, cellulase and protease) in vitro compared with that of a ...
Improvement Of The Piecewise Approximation Methods
(
Qatar University
, 1996 , Article)
A piecewise approximation method is described for planar curves. The order of classical piecewise approximations is improved. The method exploits the freedom in the
choice of the parametrization and rises the approximation ...
The In Vitro Genotoxic Activity Of Albendazole And Praziquantel, Singly And In Combination On Human Blood Lymphocytes
(
Qatar University
, 1996 , Article)
Two anthelmintic drugs; Albendazole (ABZ) and Praziquantel (PZQ), applied individually or in combination, were tested at varying concentrations (5,10,20,40 and 100 ug/ml) for their ability to induce sister-chromatid exchanges ...
Annealing Behaviour, Tcr Values And Defect Density For "Cold-Condensed" Silver Films
(
Qatar University
, 1990 , Article)
Thin silver films were deposited under vacuum of 10^ -6 Torr by thermal evaporation onto cooled glass substrates kept at low temperatures. Pure argon gas prevailed as residual gas. Annealing behaviour of the electrical ...
Serum And Tissue Enzymes And Trace Elements In Hamsters With Schistosomiasis Mansoni And/Or Protein Energy Malnutrition
(
Qatar University
, 1996 , Article)
Schistosomiasis is mostly widespread in communities suffering from protein energy malnutrition. The development of an animal model for each condition is required for better understanding of changes in certain biochemical ...
Interpretatin of geopotential field anomalies in area Around Sohag, Egypt
(
Qatar University
, 1995 , Article)
The investigated area Ues in the central part of Egypt (around Sohag). The present study aims at obtaining information about the subsurface geological conditions in the area from the analysis and interpretation of both ...
Thermoluminescence (TL) Response Of Gamma-Irradiated Raw Material And The Influence Of Doping By Different Activators
(
Qatar University
, 1994 , Article)
Thermoluminescence of raw materials has been frequently employed to determine the exposure dose as well as effective energy of gamma radiation. In this work, thermoluminescence (TL) properties of cement clinker (C) and its ...
On the effectiveness of the vlf-em method For ground water prospecting in the Basement terrains, Sinai, Egypt
(
Qatar University
, 1997 , Article)
The VLF-EM method is proved to be an effective, fast and inexpensive tool for ground water prospecting in the basement terrains of Southern Sinai. The resistive shallow alluvial deposits increase the penetration depth of ...
Sponges in Qatari waters A new source of marine natural products for biological applications
(
Qatar University
, 1999 , Article)
Sponges are the most primitive multicellular organisms belonging to Animalia kingdom. They lack symetry and do not have differentiated tissues or organs. However, as a consequence of this primitive organization it is very ...
Ascending urinary tract infection in rats caused by Proteus mirabilis
(
Qatar University
, 1997 , Article)
A model for ascending unobstructed urinary tract infection was developed in female rats to study the pathogenesis of urinary tract infection by Proteus mirabilis. Urinary bladders of rats were inoculated by I. V. cannula ...