INTRODUCTION The official rhubarb species have frequently been investigated for their hydroxyanthraquinone components and associated pharmacological properties. However, other unofficial rhubarb species were rarely studied until polyhydroxystilbenes (PHS), which commonly occur in the unofficial rhubarb, revealed a range of potential bioactivities. Hence, there has been increasing interest in th...

A wide range of household sources may potentially contribute to contaminant loads in domestic greywater. The ability of greywater treatment systems to act as emission control barriers for household micropollutants, thereby providing environmental benefits in addition to potable water savings, have not been fully explored. This paper investigates the sources, presence and potential fate of a sel...

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Photolysis and photocatalysis of Lauth's violet using nano-titanium dioxide at various aqueous buffer and non-buffer pHs. The effects of some various operating parameters such as initial dye concentration, medium pH, illumination time and catalyst amount have been investigated in a photoreactor equipped with high pressure mercury lamp. Spectrophotometric methods supported that the dye is al...

An abstract is not available for this content so a preview has been provided. As you have access to content, full PDF via the ‘Save PDF’ action button.

An abstract is not available for this content so a preview has been provided. As you have access to content, full PDF via the ‘Save PDF’ action button.

Modified brucella broth medium was used to study the growth of Helicobacter pylori at varied pHs and partial pressures of oxygen and to determine the effect of urea on culture pH. Our findings suggested that the pHs of the media remained stable with or without urea and that H. pylori showed facultative acidophilism and obligate microaerophilism.

The encapsulated pathogenic yeast Cryptococcus neoformans is poorly recognized by phagocytic cells in the absence of opsonins. Macrophages will bind and internalize complement- or antibody-opsonized C. neoformans; however, less is known about the role of opsonins in dendritic cell (DC)-mediated recognition of the organism. Thus, we studied the opsonic requirements for binding to C. neoformans b...