Thesis (M.Sc.) -- University of Adelaide, Dept. of Organic Chemistry, 1975.

Thesis (Ph.D.) -- University of Adelaide, Dept. of Agricultural Biochemistry and Soil Science, 1974.

Thesis (PH. D.)--University of Pennsylvania, 1913.

No description available.

No description available.

The purpose of this experiment was to determine the value of sulphur dioxide as a dehydrating agent for sweet potatoes.

Volatile sulphur substances originating during technological processes in malt and beer production can be a cause of various off-flavors and aromas. Their precursors are sulphur-containing amino acids. Sulphur substances play an important role in brewing as even in very low concentrations they can negatively affect total character of beer. Therefore, it is necessary to monitor volatile sulphur substances and their precursors to eliminate undesirable processes. Because sulphur substances occur in beer and raw materials at trace levels, microanalytical methods are used for their detection. This diploma thesis describes the problems of sulphur substances and their determination using the SPME/GC method.

No description available.

<p> A procedure was established for instrumental radioactivation analysis of selenium in biological materials using se77m, and used to determine selenium bound to plasma and cells of blood from 254 normal individuals. Variations with time, age, sex and hematocrit were investigated. Analysis of subfractions of plasma and cells indicated the highest selenium concentration in the plasma alpha and beta globulins. The selenium content of other tissues was determined for two individuals.</p> <p> A method was devised for instrumental radioactivation analysis of sulphur in dialyzed biological material using s37. The bound sulphur content of samples of plasma and cells from normal human blood was determined. The method would appear to have application in the instrumental activation analysis for other elements in various matrices.</p> / Thesis / Doctor of Philosophy (PhD)

The isotopic ratios S33/S32, S34/S32 and S36/S32 of different forms of sulphur in a number of meteorites have been studied. The results obtained indicate that processes of chemical fractionation have occurred in some meteorites but that the isotopic composition of the total sulphur in a single meteorite is remarkably constant from meteorite to meteorite. The relationships between the S33, S34 and S36 isotope abundances indicate that variations in these abundances due to inhomogeneities in the processes of nucleo-synthesis are not detectable. Isotopic analysis of sulphur from the iron phase of the Clark County, Pinon and Tlacotepic meteorites has shown the presence of cosmic ray induced spallation S36 and S33. These spallation results are in reasonable agreement with predictions based on production rates of other nuclei. / Thesis / Doctor of Philosophy (PhD)