Global ETD Search

221	Transition state studies on protocatechuate 3,4-dioxygenase Kaighobadi, Joni N. 12 1900 (has links) No description available. Oxidases Oxygenases Oxidation-reduction reaction
222	Single electron transfer in nucleophilic reactions of substituted norbornanes Duff, Jack Lawrence 08 1900 (has links) No description available. Oxidation-reduction reaction Nucleophilic reactions
223	The extent and importance of single electron transfers in organic reactions Sun, Xiao-Jing 08 1900 (has links) No description available. Charge transfer Oxidation-reduction reaction
224	The effect of terminal base identity on radical cation injection into the DNA duplex Sanii, Laurie Shireen 12 1900 (has links) No description available. Cations DNA Oxidation-reduction reaction
225	Oxidation and reduction studies of polyphenylene suldide and its model compounds Hsu, Songman 12 1900 (has links) No description available. Oxidation-reduction reaction Sulphonium compounds
226	Redox reactivity of mononuclear and binuclear rhenium complexes Holder, Grant Newton 05 1900 (has links) No description available. Chemical reactions Oxidation-reduction reaction
227	Rubredoxin cobalt substitution and crystallization attempts Beard, Collen Alana 05 1900 (has links) No description available. Oxidation-reduction reaction Iron proteins
228	Direct cobalt recovery from loaded KELEX 100 by reaction with hydrogen Stubina, Nathan M. January 1982 (has links) No description available. Cobalt -- Metallurgy. Electrolytic reduction. Hydrometallurgy.
229	Investigation into the role of redox reactions in Maillard model systems : generation of aroma, colour and other non-volatiles Haffenden, Luke John William. January 2007 (has links) The role of redox reactions in the formation of aroma volatiles, colour and other non-volatiles in the Maillard Reaction was investigated. The electrochemical properties of individual reactants and Maillard model mixtures were monitored via ORP (oxidation-reduction potential) and oxygen electrodes. All models exhibited unique electrochemical activities represented by their corresponding ORP profiles. Investigation into the redox potentials of several model systems demonstrated that the increased negative value of a redox potential is not necessarily correlated with its browning potential. An optimal redox potential range, where browning is favoured, was found to represent a balance between carbonyl and hydroxyl moieties in the structure. Adjustment of this redox potential by introducing reducing or oxidizing species can shift this balance resulting in modifications in browning capacities. However, it was concluded that there is a clear relationship between browning ability and reducing capacity of the model systems. Furthermore, a novel oxidative pyrolysis technique was developed to study the role of oxidative environment on the product distribution during pyrolysis and to investigate the mechanism of formation of non-volatiles through 13C and 15N-label incorporation. Application of this technique to glucoselglycine model system have indicated that most non-volatile Maillard reaction products can arise from glucose oxidation intermediates such as glucosone, gluconic acid and deoxyglucosones. To study the specific role of redox reactions in the formation of non-volatiles, a post-pyrolytic derivatization technique was developed and optimized. Several non-volatile end products were identified and mechanistically confirmed to involve oxidation and reduction reactions for their formation, such as lactones, hydroxylated benzenes and hydroxylated pyrazine. The latter was identified and confirmed to be generated via the dimerization of glycine and subsequent oxidation. In addition, the formation of different volatiles such as pyrazole, imidazole and oxazole was mechanistically confirmed to depend on redox reactions. Maillard reaction. Oxidation-reduction reaction.
230	The role of bottom sediments in the nitrogen budget of the Great Ouse estuary Trimmer, Mark January 1997 (has links) No description available. 577

Search results