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Qualitative Dealing with Quantified Assertions
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Qatar University
, 2002 , Article)
In this paper we present a newapproach to a symbolic treatment ofquan-tified statements having the following form "Q A's are 5's", knowing that A and B are labels denoting sets,and Q is a linguistic quantifier interpreted ...
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, ...
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 ...
Halophytes and Soil Salinity in Qatar
(
Qatar University
, 2002 , Article)
Saline soils cover approximately 6% of the land in Qatar. Halophytes are common along the coastal areas and inland salt flats and wetlands, where saline water is available in their natural habitats permanently or periodically. ...
A Qualitative Approach to Direct Inference Principle
(
Qatar University
, 2002 , Article)
In this paper,we study the suitability of a symbolic model of syllogistic reasoning and direct inference principle with the representation and the management of knowledge based on statistical information and evaluated in ...
A Rational Exponential Model for Unconstrained Non-Linear Optimization
(
Qatar University
, 2002 , Article)
In this Paper, a new algorithm based on the non-quadratic model is suggested for solving unconstrained optimization problems which modifies the classical conjugate gradiant methods. This technique has the same properties ...
Heavy Metals Concentration Levels in some Fish Species in the Red Sea and Gulf of Aden-Yemen
(
Qatar University
, 2002 , Article)
Level of heavy metals (Zn, Cu, Pb, and Cd) in four species of fish; manly, fish, Crenidens Crenidens, Scomberomorus Commerson, Rastrelliger Kanagurta, Thunnus Albacares were studied in the Red Sea of Yemen and the Gulf of ...
Synthesis and Spectroscopic Studies ofAtenolol Derivatives with Enhanced Lipophilicity as Potential Prodrugs
(
Qatar University
, 2002 , Article)
Atenolol, a selective pi-adrenoceptor blocking agent is characterized by its low bioavailability. A number of atenolol prodrugs were synthesized to improve its lipid solubility and hence bioavailability. These compounds ...
Trace Metals in Wastewater Ponds in Qatar
(
Qatar University
, 2002 , Article)
A one-year monitoring program was conducted to determine the extent of metal contamination in two wastewater ponds in Qatar. Abu-Hamour pond receives untreated domestic and industrial waste while Abu-NakhIa pond receives ...
Effect of Different Doses of Inorganic Fertilizer on Water Quality, Primary Productivity and Production of Nile Tilapia (Oreochromis niloticus) in Earthen Ponds
(
Qatar University
, 2002 , Article)
Earthen ponds (surface area 155 m2 each) were used to study the effect of different doses of inorganic fertilizer on water quality and fish production. Each pond was stocked with 150 fish of Nile tilapia; Oreochromis ...