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Now showing items 71-80 of 114
Some Inferential Problems in Finite Population Sampling
(
Qatar University
, 2004 , Article)
We review some results in problems of estimating a finite population total (mean) through a sample sur¬vey. Section 2 considers inference under a fixed population model and Section 3 addresses the same prob¬lem when the ...
Common fixed Points for Multimaps in Menger Spaces
(
Qatar University
, 2007 , Article)
The aim of this paper is to obtain a common fixed point theorem for multivalued mappings in Menger spaces. Of course this is a new result in Menger spaces. 2000 Mathematics Subject Classification: 47H10, 54H25.
Corrosion of n-GaAs/aqueous Photoelectrochemical Cell
(
Qatar University
, 2005 , Article)
A combination of electrochemical studies, scanning electron microscopy, SEM, and light reflectivity measurements reveals information about the corrosion of enlightened n-GaAs in various aqueous electrolytes. The corrosion ...
Changes in Soluble Sugars and Proline in Seedlings of A local Wheat Cultivar (Doha) Due to the Salt Stress and Temperature
(
Qatar University
, 2006 , Article)
Germination of grains, and changes in the soluble sugars and proline due to salt stress under three temperatures in the germinating grains, of the local wheat cultivar (Doha) were studied. This cultivar proved resistant ...
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 ...
On Symboloic Reasoning and Direct Inference Principle
(
Qatar University
, 2004 , Article)
This paper discusses an approach using the M-valued symbolic logic with syllogistic reasoning and direct inference principle (reasoning from statistical information to conclusions about individuals), to manipu¬late statistical ...
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 ...
Geochemistry and Petrogenesis of a Late Proterozoic Volcanic Sequence in the Magal Gebriel Area, South Eastern Desert, Egypt
(
Qatar University
, 2000 , Article)
Metabasalts and meta-andesites together with small amounts of metadacite constitute the Magal Gebriel volanic suite. Restricted amounts of unmetamorphosed rhyolitic rocks are also present. The metavolcanics show a wide ...
Gravitational Instability of a Radiating Gas Cloud with Variable streams
(
Qatar University
, 2001 , Article)
The self-gravitating instability of a radiating gas cloud possessing variable streams is investigated. The self-gravitating force is destabilizing according to restrictions, the radiation has a strong stabilizing influence ...