PubMed · 5044863
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
J M Levy, J A Simmons. 1972. A compact oxygen tension sensor.. https://doi.org/10.1007/bf02474581
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Plasma sterilisation of heat sensitive materials appears as an attractive substitute for ethylene oxide processing which leaves adsorbed toxic residues. In oxygen-based plasmas, the de-activation of pathogenic organisms is assumed to be due to their slow combustion with the active species which produces CO2 and H2O. In the absence of ion bombardment, the concentration of oxygen atoms is an important parameter entering the plasma sterilisation efficiency. Means for achieving high production of oxygen atoms are reviewed and discussed. In particular, an initial improvement would be to generate the plasma in the sterilisation volume itself. Uniform plasma excitation at electron cyclotron resonance (ECR) which allows resonant coupling in the whole treatment volume (no shadowing) and requires reduced electric fields to sustain the discharge (no heating of biomaterials) is particularly adapted to this purpose.
Explore the source record for details and available documents.
Electronic absorption and fluorescence spectra of tyrosine have been studied, using aqueous solutions containing normal and excess amounts of dissolved oxygen, as a function of time. The absorption and fluorescence intensities are found to oscillate with time. Interaction between tyrosine and oxygen is appreciable but it seems that either the formation of a complex between the two molecules is not favoured, or the process of complexation is very slow and the complex weak.