Now showing items 41-50 of 179
The 21-dehydroxglation of corticosteroids of Eubacterium lentum and the dehalogenation of 4-chlorobenzoic acid by 4-chlorobenzoate dehalogenase
(Brock University, 1988-11-04)
Two enzyme mechanisms were investigated: the 21-dehydroxylation of corticosteroids by Eubacterium lentum and the dehalogenation of 4-chlorobenzoic acid by Pseudomonas sp. CBS 3. , Chemical and enzymic methods of ...
Exchange energy calculation of He-He with supermolecular one-matrix
(Brock University, 1982-07-09)
Exch~nge energy of the He-He system is calculated using the one-density matrix which has been modified according to the supermolecular density formula quoted by Kolos. The exchange energy integrals are computed analytically ...
Analysis Of The A11a22 X 11a11 And A 33a22 X 1 electronic transitions in selenocarbonyl difluoride
(Brock University, 1982-10-02)
The absorption spectrum of F2CSe in the 18800-21900 cm-1 region has been recorded at -770 C and 220 C under the conditions of medium resolution. The responsible electronic promotion is TI* + n excitation which leads to ...
Investigation of molecular polarizabilities and derivatives in halomethanes
(Brock University, 1993-07-09)
The research undertaken was to obtain absolute Raman intensities for the symmetric stretching vibrations of the methyl halides, CH3X with (X=F, CI, Br), by experiment and theory. The intensities were experimentally ...
The chemistry of heterocyclic methine bases and of their acyl and thioacyl derivatives
(Brock University, 1987-07-09)
The work described in this thesis has been dtvided into six sections . The first section involves the reaction of 3,5-diphenyl-2-methyl-l,3,4-oxadiazolium perchlorate with acetic and benzoic anhydrides. The second ...
A time-resolved electron paramagnetic resonance spectroscopy study of paramagnetic porphyrins /
(Brock University, 2004-07-14)
There is considerable interest in intramolecular energy transfer, especially in complexes which absorb visible light, because it is crucial to the better understanding of photoharvesting systems in photosynthetic organisms ...
Synthesis of 4-hydroxycinnamic amides of di-, tri-, and tetraamines : potential insect toxins /
(Brock University, 2000-05-21)
The monoconjugates of phenolic acids (i.e. coumaric acid) with polyamines such as spermidine and spermine are strikingly similar to some toxins from spiders and predatory wasps. Many plants contain phenolic acid ...
Synthesis of photoaffinity analogues of alpha-tocopherol /
(Brock University, 1999-05-21)
Arsenic and germanium determination by hydride generation in the D.C. plasma optical emission spectrometer
(Brock University, 1986-07-09)
Modifications to the commercial hydride generator, manufactured by Spectrametrics, resulted in improved operating procedure and enhancement of the arsenic and germanium signals. Experiments with arsenic(III) and arsenic(V) ...
Investigations into phosphorus removal by constructed wetlands : root bed media modifications /
(Brock University, 1997-05-21)
A study has been conducted focusing on how the phosphorus renrx)val efficiency of a constructed wetland (CW) can be optimized through the selective enrichment of the substratum. Activated alumina and powdered iron were ...