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Full-Text Articles in Life Sciences
Ferroxidase Activity Of Mushroom Tyrosinase., Rodney Boyek, David Mascotti, Barbara Schori
Ferroxidase Activity Of Mushroom Tyrosinase., Rodney Boyek, David Mascotti, Barbara Schori
David P. Mascotti
Mushroom tyrosinase catalyses the oxidation of Fe(II) to Fe(III). Both the newly-discovered ferroxidase and the well-characterized diphenol oxidase activities of tyrosinase exhibit inhibition by cyanide and both activities co-purify during two preparation steps. The characteristics of tyrosinase-catalysed Fe(II) oxidation are compared with those of other ferroxidases.
Auger Analysis Of Si–H Bonding And Hydrogen Concentration In Hydrogenated Amorphous Silicon, Nancy Burnham, Aj Nelson, Ab Schwartzlander, Se Asher, Ll Kazmerski
Auger Analysis Of Si–H Bonding And Hydrogen Concentration In Hydrogenated Amorphous Silicon, Nancy Burnham, Aj Nelson, Ab Schwartzlander, Se Asher, Ll Kazmerski
Nancy A. Burnham
Auger electron spectroscopy line‐shape analysis of the Si‐L 2 3 V V peak has been performed on hydrogenated amorphous silicon (a‐Si:H). Both a‐Si:H produced by hydrogen implantation of siliconsingle crystals (for analytical standards) and thin films (fabricated for solar cell applications) were examined in these studies. Hydrogen concentrations were confirmed by secondary ion mass spectrometry, and samples having hydrogen content over the range 101 6–102 2 cm− 3 were evaluated. Correlations between the area under the deconvoluted L 2 3 V V transition peak and the known hydrogen content have resulted in a semiquantitative method of determining hydrogen concentration using …