We report the observation of a metal-insulator transition at B= 0 in a high mobility two
dimensional hole gas in a GaAs-AlGaAs heterostructure. A clear critical point separates the …

Tannery effluent was assessed as a carbon source for biological sulphate reduction in a
pilot-scale upflow anaerobic sludge blanket (UASB), stirred tank reactor (STR) and trench …

This review focuses on the biochemical and physiological response of the halotolerant green
alga, Dunaliella salina, to conditions of stress. It is now well established that in response to …

The interrelationship between abscisic acid (ABA) production and β-carotene accumulation
was investigated in salt-stressed cells of the halotolerant green alga Dunaliella salina var …

A capillary membrane bioreactor has been developed and tested for the removal of phenolic
compounds from synthetic and industrial effluents. Polyphenol oxidase was immobilized on …

Acid mine drainage pollution may be associated with large water volume flows and exceptionally
long periods of time over which the drainage may require treatment. While the use and …

Three species of algae were investigated for their ability to accumulate metal ions. Scenedesmus,
Selenastrum and Chlorella species were found to be capable of accumulating metals …

Alkaline precipitation of heavy metals from acidic water streams is a popular and long standing
treatment process. While this process is efficient it requires the continuous addition of an …

The biodegradation of phenol and 2,4,6-trichlorophenol (2,4,6-TCP) by immobilized white-rot
fungal cultures was studied in pinewood chip and foam glass bead-packed trickling …

A detailed investigation of the metallic behavior in high-quality GaAs-AlGaAs two-dimensional
hole systems reveals the presence of quantum corrections to the resistivity at low …