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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 81 to 90 of 258 (0.014 seconds)| 81 |
The chemistry of wood-cell wall polysaccharides, with special reference to the galactan componentsFairweather, Ronald M. January 1965 (has links)
No description available.
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| 82 |
Chemical structure of bacterial capsular polysaccharides, with special reference to Aerobacter aerogenesJamieson, Robert S. P. January 1955 (has links)
No description available.
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| 83 |
Analytical and structural studies in the polysaccharide groupKaramalla, K. A. January 1965 (has links)
The studies reported in this thesis fall into three parts: Part 1. Introductory review of the analytical methods currently available for analytical and structural studies of polysaccharides, together v/ith a brief review of the present state of knowledge of gum exudates of the Acacia family. Part 2. Comparative Analytical Studies. Comparative analytical studies were carried out on;- (a) sixteen samples of A.Senegal gum differing in origin. Only slight differences in the overall composition and physical properties of both the crude and purified gum were observed. (b) seven different, previously unstudied, species of Acacia gum. Marked variations in both composition and properties were observed from species to species, which were studied in both the crude and purified forms. (c) ten specimens of the gum from A.nilotica were analysed to assess the extent to which inter-nodule variation occurred. Fractionation of this gum was attempted on DEAE-cellulose. One major fraction and several minor fractions were obtained; on preliminary analysis, the major fraction did not differ significantly from the 'parent' gum. Part 3. Structural Studies. Detailed structural studies were carried out on a typical sample of A.nilotica gum.
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Conformational studies in carbohydrate chemistryMathewson, H. D. January 1963 (has links)
I. The Rates of Formation of Some Hexoside 2,3-Epoxides The secondary tosylates of some 4,6-0-ethylidene derivatives of compounds with the D-glucose configuration have been prepared, and their rates of cyclisation to 2,3-epoxides in alkaline solution have been measured. In excess sodium hydroxide solution, the cyclisation of the tosylates was found to exhibit kinetics first-order with respect to the concentration of the tosylate. The relative rates of reaction obtained from these experiments have been correlated with the structural and stereochemical features of the tosylates in terras of recent theories of reaction mechanism and conformational analysis. It is clear from the results that electronic as well as steric effects must be invoked to explain the differential reactivities found in these systems. Evidence relevant to the effect of conformational energy barriers ("passing interactions") on the rates of reaction is discussed.
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The polysaccharide constituents of Agave sisalanaCanas-Rodriguez, A. January 1958 (has links)
No description available.
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| 86 |
Carbohydrates in marine algal proteinsHeard, D. D. January 1965 (has links)
No description available.
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| 87 |
Physico-chemical and analytical studies on acidic polysaccharides of plant and animal originKing, N. J. January 1960 (has links)
No description available.
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| 88 |
Investigations of the polysaccharides from the gum exudate of Brachychiton diversifoliumWilliams, Robert S. January 1957 (has links)
No description available.
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| 89 |
Hemicellulose components of coniferous woodsWood, T. M. January 1961 (has links)
No description available.
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| 90 |
The polysaccharides of reindeer moss (Cladonia alpestris)Warburton, M. January 1954 (has links)
No description available.
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