• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 178
  • 73
  • 48
  • 14
  • 7
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 2
  • 1
  • Tagged with
  • 391
  • 306
  • 88
  • 57
  • 50
  • 33
  • 32
  • 30
  • 27
  • 27
  • 21
  • 20
  • 19
  • 18
  • 16
  • About
  • 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.
101

A study on the fermentation of molasses by bacteria isolated from marine water and sediments.

January 1987 (has links)
by Kwok-wai Lo. / Thesis (M.Ph.)--Chinese University of Hong Kong, 1987. / Bibliography: leaves 183-194.
102

Affinity mass sensors: concept and applications. / CUHK electronic theses & dissertations collection

January 1997 (has links)
by Shao Bing. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (p. 111-122). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web.
103

Molecular simulations of the enantioseparating mechanism of polysaccharide-based chiral stationary phase and enzymatic acylation of N-benzoyl-L-arginine ethyl ester in binary aquo-organic solvent mixtures

Yeung, Kai Tai 01 January 2007 (has links)
No description available.
104

Biointerfacial studies of nucleic-acid bases using chromatographic and three-dimensional chemometric methods

Luo, Haibin 01 January 2005 (has links)
No description available.
105

Studies on the behaviour of polystyrene in reversed phase chromatography.

Shalliker, Ross Andrew, mikewood@deakin.edu.au January 1992 (has links)
Polystyrene behaviour in reversed phase high performance liquid chromatography was influenced mainly by the solvent system, but secondary affects were observed depending on the stationary phase. A variety of reversed phase columns were investigated using mobile phase combinations of dichlorom ethane-methanol, dichloromethane-acetonitrile, ethyl acetate-methanol and ethyl acetate-acetonitrile. Several different modes of behaviour were observed depending on the polymer solubility in the solvent system. In the dichloromethane-methanol solvent system, polymer-stationary phase interactions only occurred when the molecules had pore access. Retention of excluded polystyrene depended on the kinetics of precipitation and redissolution of the polymer. Peak splitting and band broadening occurred when the kinetics were slow and molecular weight separations were limited !o oligomers and polystyrenes lower than 5-10(4) dalton. Excellent molecular weight separations of polystyrenes were obtained using gradient elution reversed phase chromatography with a dichloromethane-acetonitrile mobile phase on C18 columns. The retention was based on polymer-stationary phase interactions regardless of the column pore size. Separations were obtained on large diameter pellicular adsorbents that were almost as good as those obtained on porous adsorbents, showing that pore access was not essential for the retention of high molecular weight polystyrenes. In the best example, the separation ranged from the monomer to 10(6) dalton in a single analysis. Very little adsorption of excluded polymers was observed on C8 or phenyl columns. Polystyrene molecular weight separations to 7-10(5) dalton were obtained in an ethyl acetate-acetonitrile solvent system on C18 columns. Adsorption was responsible for retention. When an ethyl acetate-methanol solvent system was used, no molecular weight separations were obtained because of complex peak splitting. Reversed phase chromatography was compared to size exclusion chromatography for the analysis of polydisperse polystyrenes. Similar results were obtained using both methods. However, the reversed phase method was less sensitive to concentration effects and gave better resolution.
106

High-performance liquid chromatographic analysis of commonly used drugs /

Hider, Gregg C. January 1988 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 1988. / Includes Addendum: High-performance liquid chromatographic analysis of commonly used drugs: Six laboratory experiments for clinical chemistry students. Includes bibliographical references (leaves 48-52).
107

The nature of the polysaccharide hydrolysis in black gumwood treated with water at 160# C

Bernardin, Leo J. 01 January 1958 (has links)
No description available.
108

Chromatographic separation of asphaltenes on silica materials

Razavilar, Negin. January 2009 (has links)
Thesis (M. Sc.)--University of Alberta, 2009. / Title from pdf file main screen (viewed on Dec. 11, 2009). "A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science, Department of Chemicals and Materials Engineering, University of Alberta." Includes bibliographical references.
109

The nature of the polysaccharide hydrolysis in black gumwood treated with water at 160 C

Bernardin, Leo J., January 1958 (has links) (PDF)
Thesis (Ph. D.)--Institute of Paper Chemistry, 1958. / Includes bibliographical references (p. 72-75).
110

CHROMATOGRAPHIC INVESTIGATIONS OF CHEMICALLY MODIFIED OPEN TUBULAR COLUMNS

Cline, Sharon Metcalf January 1979 (has links)
No description available.

Page generated in 0.0633 seconds