Michelle Louise Isaacs

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In the determination of the effect of heat or chemicals on a given suspension of bacteria it is usually assumed that the concentration of the disinfectant, if chemicals are used, the temperature and the time of exposure are the only factors involved. In the usual procedures the culture is heated or placed in contact with a disinfectant and after varying(More)
1. The reduction potentials of B. typhosus in culture in bouillon which is given access to atmospheric oxygen show a negative drift that attains the values found in sterile bouillon when deaerated with nitrogen: Eh -0.085 to -0.095 volt at pH 7.6. The potential reaches this level after 6 to 8 hours incubation, and is maintained at this point for several(More)
Colonization and oxidative metabolism of South African low-rank discard coal by the fungal strain ECCN 84 previously isolated from a coal environment and identified as Neosartorya fischeri was investigated. Results show that waste coal supported fungal growth. Colonization of waste coal particles by N. fischeri ECCN 84 was associated with the formation of(More)
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