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Now showing items 151-160 of 206
Liquid chromatographic separation of the enantiomers of racemic A aminophosphonates as their n-3, 5-dinitrobenzoyl derivatives On chiral fluorocarbinol stationary phases
(
Qatar University
, 1994 , Article)
The enantiomers of a wide variety of a-aminoaryl (or alkyl) phosphonate esters are separated by liquid chromatography as their N-3,5-dinitrobenzoyl derivatives on three chiral fluorocarbinol stationary phases. In addition ...
Design and Performance Evaluation of a High Speed Transport Protocol
(
Qatar University
, 1994 , Article)
Transport protocols that were designed for network today are not adequate for high speed networks of the future due to the increase in network bandwidth relative to the speeds of the processor components. As a result, 100 ...
Histochemical Studies On argas (Argas) Hermanni (Ixodoidea: Argasidae) Salivary Glands
(
Qatar University
, 1994 , Article)
Basic proteins, tryptophan, tyrosine, free NH2 and SH groups, general carbohydrates, glycogen, acid mucopolysaccharides and lipids were investigated during nymphal and adult Argas (Argas) hermanni Audouin development. In ...
Lower Eocene Black Shale Beds Of Rus Formation In North Of Oman-Possible Oil Shales
(
Qatar University
, 1994 , Article)
A suite of samples from some black shale beds of lower Eocene Rus Formation from north of Oman have been investigated through detailed geochemical analyses. The obtained results indicate that these shale beds contain a ...
Iodometric microdetermination of phosphorus in organic compounds by use of An amplification reaction
(
Qatar University
, 1994 , Article)
A high chemical amplification method is described for the iodometric microdetermination of phosphorus in organic compounds. This method depends on combustion by the oxygen flask, absorption of the combustion products in ...
Evaluation Of Saudi Arabia's Development Planning: Direction And Implementation Problems
(
Qatar University
, 1994 , Article)
Saudi Arabia's development has advanced along three
dimensions: economic, social and institutional. In the economic field it meant
advances in basic infrastructure and in economic diversification. In the social
field, ...
Factor analysis of integrated radiometric data as an aid In geological mapping of gebel eneigi area South Eastern Desert, Egypt
(
Qatar University
, 1994 , Article)
Factor analysis technique was applied to airborne gamma-ray spectrometric data of Gebel Eneigi Area, South Eastern Desert of Egypt where the concentration maps of U, Th, K and their ratios besides the Tc (total count map) ...
Facile synthesis of several new pyridine and fused pyridine derivatives with Anticipated biological activity
(
Qatar University
, 1994 , Article)
The reactions of benzothiazol-2-N-acetylacetohydrazide 1 with a, (}-unsaturated aldehyde, ketone, ester or diketoester led to the formation of the titled ring systems. The same target was also achieved through the reactions ...
The structure of tetraketones in the solid state: the crystal structure of 1,6- Diphenylhexane-1,3,4,6-tetrone
(
Qatar University
, 1994 , Article)
The crystal structure of l,6-diphenylhexane-l,3,4,6-tetrone was determined, CjgHi4O4, M 294.31 monoclinic, space group P2j/n (# 14), a 5.1192 (6) A, b 9.085 (9) A, c 15.366 (4) A, b 97.91 (4)°, p (calc) 1.362 g/cm3, Z 2, ...
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 ...