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Now showing items 281-290 of 451
Evaluation of methods for screening of extracellular cellulase In filamentous fungi
(
Qatar University
, 1996 , Article)
Twenty-eight fungal species belonging to fifteen genera were isolated from Saudi Arabian soil and were screened for the production of extracellular cellulase enzymes. Cleared-zone technique, cellulose azure method and agar ...
Comparison of antibiotic susceptibilities of four species of coagulase-negative staphylococci isolated rom normal skin and acne Lesions: a statistical approach
(
Qatar University
, 1996 , Article)
Ten strains of each of four species of coagulase negative staphylococci: S. epidermidis, S. hominis, S. capitis, and S. cohnii isolated from both acne lesion and normal skin (total 80 strains) were tested for their antibiotic ...
On the direct problem and scattering data for a singular system of differential Equations with discontinuous coefficients
(
Qatar University
, 1996 , Article)
A system of Sturm-Liouiville differential equations of order n with a density matrix function is considered. The direct problem of the considered system is studied and hence the scattering data of the problem is obtained.
The P-Center And The P-Median Problems In Graphs With Small Number ' Of Spanning Trees
(
Qatar University
, 1996 , Article)
In this paper, we will describe some algorithms and give their complexity as following:
(1) The algorithm for finding a dominating set of radius r in a vertex-weighted graph with small number of spanning tress.
The ...
Photocatalytic treatment of industrial wastewater
(
Qatar University
, 1997 , Article)
A novel Plexiglas double-skin sheet reactor ( DSSR ) able to use diffuse as well as direct sunlight for the detoxification of industrial wastewater was used. The efficiency of the photocatalytic treatment of a highly ...
The Effect of Cutting Height on Forage Yield and Performance of Alfalfa Cultivars
(
Qatar University
, 1999 , Article)
Six exotic alfalfa (Medicago sativa L.) cultivars were evaluated for their forage yield performance and persistency under different cuttings heights during 1991/1992 in UAE. Cultivars revealed a highly significant difference ...
Krein's Method For Singular Mixed Problems
(
Qatar University
, 1993 , Article)
In this paper, the spectral relations of the Fredholm integral equation of the first kind for the mixed problems with singular kernel are obtained.
Pollen Morphology Of The Family Boraginaceae In Qatar
(
Qatar University
, 1995 , Article)
The pollen morphology of six species belonging to six genera of Boraginaceae in Qatar have been investigated by LM and SEM. The examined species proved to be eurypalynous, having different morphological types and can be ...
Biochemical composition of the copepod euterpina acutifrons from the Coastal waters of alexandria
(
Qatar University
, 1994 , Article)
Protein, carbohydrate and lipid contents were determined in the most numerous and wide spread copepod Euterpina acutifrons collected from the coastal waters of Alexandria. Protein is the major biochemical component of the ...
A Note On Pre-J-Group Rings
(
Qatar University
, 1991 , Article)
Given an associative ring R satisfying a°'b = Ba" for any pair a and b of its elements, is being a positive integer, and a group G satisfying x""' = y"~1, we give a sufficient and necessary condition on the group ring GR ...