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Now showing items 141-150 of 197
Effect Of "Ethrel" On Colour Development And Juice Quality Of Sweet Oranges And Grapefruits
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Qatar University
, 1994 , Article)
"Ethrel" was sprayed at 0,120, 420 and 480 ppm on sweet orange and grapefruit trees at fruit maturity stage to improve colouring and juice quality. Changes in fruit colour were observed in both varieties but the results ...
Application Of Different Methods For The Preparation Of Chlorophyll Pigments For Food And Pharmaceutical Industries
(
Qatar University
, 1994 , Article)
The main objective of this work is to establish an economic and applied technique for the production of chlorophyll pigments and their derivatives namely Cu-chlorophyll complex in the form of colour additives. These trials ...
Azo-Hydrazo Tautomerism: Further Evidence Based On Polarographic Reduction And Acidity Function Of Some Heterocyclic Compounds Containing Oximino-Group
(
Qatar University
, 1994 , Article)
Potentiometric pKa and polarographic behaviour of l,3-indandione-monoxime-2-phenyl azo and four of its substituted derivatives were investigated in buffer solution of pH -2-12. The results showed that the compounds are in ...
Studies On Plant Growth Regulators And Enzymes Production By Some Bacteria
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Qatar University
, 1994 , Article)
Twenty four bacterial strains of thallobacteria belonging to genus Streptomyces were tested for their potentialities to produce plant growth regulators and some hydrolases in shake cultures. Seven strains namely; Streptomyces ...
Response of Nile Phytoplankton to Algicide (CuSO4, 5H2O) In Multispecies Chemostat Experiments
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Qatar University
, 1994 , Article)
The addition of CuSO4 . 5H2O (algicide) to cultures of phytoplankton populations from the river Nile, grown under steady-state conditions using chemostat, resulted in remarkable alterations in species composition, total ...
Thermogravimetry and infrared spectroscopy Of Moroccan oil shales in an oxidative Dynamic atmosphere
(
Qatar University
, 1994 , Article)
Thermogravimetric analyses were carried out on raw Timahdit (Morocco) oil shales and its demineralisation products in an oxidative atmosphere. The kerogen was isolated by successive HCl, HF and float-sink separation ...
A Note On Semi Generalized Closed Sets
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Qatar University
, 1994 , Article)
In the present note authors obtain some characterizations and properties of semi generalized closed sets.
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 ...