D Gareth Williams

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Although the bonds between the cellular components of pine epithelia (isolated from holocellulose) can be strengthened by the addition of multivalent ions such as those of calcium, iron, uranium, etc., it was observed that these bonds are only weakened and not destroyed by the removal of the ions from the tissues. Reagents, such as KOH and K2SO4, which do(More)
Freshwater aquatic systems in Australia are being increasingly colonised by invasive species that are having a wide range of social, economic and environmental impacts. The study of the spread of such invasive species is constrained by the inherent difficulties of obtaining relevant data in a timely manner and in conducting critical field experiments.(More)
Many DNA profiles recovered from crime scene samples are of a quality that does not allow them to be searched against, nor entered into, databases. We propose a method for the comparison of profiles arising from two DNA samples, one or both of which can have multiple donors and be affected by low DNA template or degraded DNA. We compute likelihood ratios to(More)
The separation of a selected group of N-nitrosamino acids and their syn and anti conformers by high-performance liquid chromatography using an alpha-cyclodextrin bonded silica gel column and a mobile phase of acetonitrile-triethylammonium acetate was achieved. The effects of mobile phase pH and concentration of acetonitrile on resolution and elution times(More)
The Olympus "Quickrate", a photometer built for both kinetic and end point analysis was evaluated in this laboratory. Aspartate transaminase, lactate dehydrogenase, hydroxybutyrate dehydrogenase, creatine kinase, alkaline phosphatase and gamma glutamyl transpeptidase were measured in the kinetic mode and glucose, urea, total protein, albumin, bilirubin,(More)
The estimation of vitamin dependent red cell enzymes before and after in vitro vitamin supplement offers a new approach to the assessment of vitamin nutritional state. To facilitate the clinical application of the principle involved, enzyme assay and aspartate aminotransferase have been made suitable for routine use. Reference ranges have been obtained for(More)
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