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  • 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.
141

Phthalate biodegradation gene organization, regulation and detection.

Han, Ruyang. January 2008 (has links)
Thesis (Ph. D.)--Rutgers University, 2008. / "Graduate Program in Microbiology and Molecular Genetics." Includes bibliographical references (p. 164-179).
142

Studies on the reduction of unsaturated thioesters using copper hydride

Li, Ninglin. January 2010 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2010. / Includes bibliographical references (leaves 173-174). Also available in print.
143

The reaction of piperidine with certain alkyl bromides and bromo-esters

Drake, Wray Vernon. January 1933 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1933. / Typescript. With this are bound 2 reprints from Journal of the American Chemical Society: The reaction of organic halides with piperidine : III. Cyclohexyl bromide and the butyl bromides / By W.V. Drake and S.M. McElvain. Vol. 55 (1933), p. 1155-1158 -- The reaction of organic halides with piperidine : IV. Bromo esters / By W.V. Drake and S.M. McElvain. Vol. 56 (1934), p. 697-700. Includes bibliographical references (leaves 54-55).
144

Electrophilic catalysis of ester hydrolyses

Hurst, Gail Heathcock. January 1966 (has links)
Thesis (Ph. D.)--University of California, Los Angeles--Chemistry. / Vita. eContent provider-neutral record in process. Description based on print version record. Bibliography: leaves 151-157.
145

Mono-(2-ethylhexyl)phthalate (MEHP)-induced disruption on the crosstalk between sertoli cells and germ cells

Yao, Pei-Li, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2008. / Vita. Includes bibliographical references.
146

Complexation of divalent copper, zinc and calcium ions by phosphate esters in aqueous solution

Kramer, Ulrike January 1988 (has links)
The role of metal ions as catalysts for numerous biochemical reactions has been the subject of many investigations. One of the most important classes of ligands are phosphate esters. In this thesis I describe the investigation of some phosphate ester-metal ion equilibria. Formation constants for the complexation of p-nitrophenyl phosphate, phenyl phosphate, 1-naphthyl phosphate, α-D-glucose-1'-phosphate, glycerol-2-phosphate, methyl phosphate, 8-quinolyl phosphate, 8-quinolyl methyl phosphate, triphosphate and fluorotriphosphate with protons, copper, zinc and calcium ions were determined by potentiometry. In addition, the complexation of 1-naphthyl phosphate, 8-quinolyl phosphate and 8-quinolyl methyl phosphate with nickel and cobalt ions was also studied. Protonation enthalpies and copper complexation enthalpies of p-nitrophenyl phosphate, phenyl phosphate, 1-naphthyl phosphate, α-D-glucose-1'-phosphate, glycerol-2-phosphate and methyl phosphate were determined by calorimetry. A correlation between the nucleophilicity of the ester group and the magnitude of the stability constants of the proton, copper and zinc complexes of p-nitrophenyl phosphate, phenyl phosphate, 1-naphthyl phosphate, α-D-glucose-1'-phosphate, glycerol-2-phosphate and methyl phosphate is found and explained in terms of electronic induction effects, i.e. by polarisation of the phosphate oxygens by the ester group. The calorimetric results show that the desolvation of ligand and metal ion during the complexation plays an important role. The possibility of similar correlations for complexes of triphosphates is also discussed.
147

Reaction of some chelating thioesters with chlorotris (triphenylphosphine) rhodium (I) : a model of the initial stages of hydrodesulfurization

Uhm, Hae Won January 1986 (has links)
No description available.
148

Measures Of Oxidation Of Soybean And Catfish Oils

McGillivray, John Michael 09 December 2006 (has links)
Oils from soybeans and catfish by-products were extracted using hexane, propane, and supercritical carbon dioxide (SCCO2). Free fatty acids (FFA), peroxide values (PV), anisidine values (AnV), total oxidation (TOTOX), induction point (IP), iodine values (IV), and 2-thiobarbituric acid reactive substance (TBARS) were all measured to analyze oxidation of these oils. The extraction yield of propane, hexane, and SCCO2 oils was 80.4, 94.5, and 90%, in respect to total lipid content. Oils extracted with SCCO2 were more oxidized than those extracted with propane and hexane; probably due to the higher temperature and longer extraction time. The IP correlated with AnV, IV, PV, and TBARS for soybean and catfish oils. These results suggest that IP is the optimum way to measure soybean and catfish oil stability.
149

Synthesis of an ingenane A/B-ring analogue : a model study for the total synthesis of ingenol /

Ross, Robert John January 1986 (has links)
No description available.
150

Asymmetric heterogeneous reduction over modified supported metal catalysts

Chambers, Nick January 1999 (has links)
No description available.

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