Search
Now showing items 11-20 of 114
S.G. Connected Spaces
(
Qatar University
, 2000 , Article)
The purpose of this paper is to introduce and study a strongr type of connectedness called s.g connectedness in topologi-cal spaces.
Urea Hydrolysis and Urease Activity in Saudi Arabian Soils
(
Qatar University
, 2000 , Article)
Soil samples were collected from eight different localities m Saudi Arabia, and analysed for mechanical properties as well as for urea hydrolysis. The urease enzyme activity of these calcareous soils was also investigated. ...
Formation of Usual and Bridging Complexes using organoselenium and -Tellurium compounds
(
Qatar University
, 2005 , Article)
The reactions of l,3-benzoselenadiazole with some diiodo selenium and tellurium heterocyclic compounds have led to the formation of charge transfer complexes. From the same reactions but in the presence of I9PtC14 new types ...
Mineralogy and Chemistry of Desert Roses, Ayn Dar Area, Abqaiq, Eastern Province, Saudi Arabia
(
Qatar University
, 2002 , Article)
Desert roses are crystals which usually take the form of rose petal. They have definite crystal shapes, and enclose sand grains. The desert roses were scattered along an area of about 500m2 in the Ayn Dar area, near Abqaiq, ...
Comparative study of organic and inorganic fertilizers on forage corn (Zea mays l.) Grown on two soil types
(
Qatar University
, 2001 , Article)
Two pot experiments were conducted in 1995/96 and 1996/97 to investigate the interactive effects of organic and inorganic fertilizers applied to two soil types on the performance of corn (Zea mays L.). The soil types were ...
Comparative Growth Performance and Feed Utilization of Four Local Strains of Nile Tilapia (Oreochromis niloticus L.) Collected From Different Locations in Egypt
(
Qatar University
, 2003 , Article)
Brood stocks of Nile tilapia (Oreochromis niloticus L.) were collected from Lakes ofNasser (Aswan), Manzalah, Maryut and Abbassa fishponds. Fingerlings ofFI of each strain was fed diet containing 27% CP for 90 days. The ...
Study The Effect of Classical And Rapid Thermal Annealing on The Electrical Characteristics of P-Ge/P-si Heterojunction
(
Qatar University
, 2002 , Article)
This paper describes the effect of classical thermal (CTA) and rapid thermal annealing (RTA) on the electrical characteristics (I-V, C-V) of isotype Ge/Si heterojunction.
The I-V characteristics were improved after annealing ...
Thermal and Optical Radiation Effects on LEH
(
Qatar University
, 2003 , Article)
Synthetic red blood cells known as LEH is a material that offers an excellent alternative to substitution blood since the chemical composition of the Oxy, LEH, is similar to that of the natural blood cells. Unfortunately, ...
Algebraic Approach to Formal Microstructure Sheaves and Formal Quantum Sheaves Over Projective Schemes
(
Qatar University
, 2007 , Article)
The I-adic non-commutative filtrations have crucial applications in the study of Lie algebras and the integral group rings. The I-completion R of a commutative ring R is considered a useful tool in algebraic geometry. Here ...
Geologic evolution of the Dukhan salt flats in Western Qatar Peninsula, Arabian Gulf
(
Qatar University
, 2003 , Article)
Photo-interpretation of landsat Thematic Mapper images of the Dukhan salt flats, on the west coast of Qatar, reveals several deposit zonations within the salt flats. The deposit zonations occupy a restricted sub-evaporite ...