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  • 1
    Digitale Medien
    Digitale Medien
    Influence of nitrogen availability on agar-polysaccharides fromGracilaria verrucosa strain G-16: structural analysis by NMR spectroscopy (1989)
    Springer
    Journal of applied phycology 1 (1989), S. 53-58 
    Details
    ISSN: 1573-5176
    Schlagwort(e): agarose ; Gracilaria ; algae ; polysaccharide ; 13C-NMR ; agar
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract The influence of nitrogen availability on the chemical structure of agar polymers isolated fromGracilaria verrucosa strain G-16 was ascertained by sequential solvent extraction and carbon 13 nuclear magnetic resonance (13C NMR) spectroscopy. Agar isolated fromG. verrucosa strain G-16 cultured under nitrogen limited conditions showed large non-polar components but produced spectra indicative of only minor amounts of methylation. These agars also produced spectra suggesting the presence of floridean starch. The nitrogen supplemented cultures ofG. verrucosa strain G-16 produced agars of a more polar nature (hot-water soluble) and contained little detectable starch. The data suggest that the higher gelling temperatures of agar from nitrogen limited plants is not due to markedly higher methylation. These data also suggest that nitrogen effects on agar content may not be as significant as previously thought.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00003535
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Sidestream versus mainstream carbon dioxide analyzers (1992)
    Springer
    Journal of clinical monitoring and computing 8 (1992), S. 139-141 
    Details
    ISSN: 1573-2614
    Schlagwort(e): Monitoring: carbon dioxide ; Measurement techniques: carbon dioxide; capnometry ; Equipment: capnometers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01617434
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    A carbon dioxide monitor that does not show the waveform is worthless (1988)
    Springer
    Journal of clinical monitoring and computing 4 (1988), S. 213-214 
    Details
    ISSN: 1573-2614
    Schlagwort(e): Monitoring: carbon dioxide displays ; Equipment: capnometers
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Medizin
    Notizen: Abstract The author suggests that the carbon dioxide waveform should be displayed, as are the electrocardiogram and arterial pressure waveforms. He argues that a carbon dioxide analyzer that does not provide a waveform is not of value, as subtle changes in the carbon dioxide waveform can reflect impending problems. Only when a plateau is present in the capnogram can one be certain that end-tidal gas is being measured, and the author asserts that the presence or absence of this plateau can be detected only by visually inspecting the waveform.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01621819
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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