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  • 1
    Digitale Medien
    Digitale Medien
    Springer
    European archives of oto-rhino-laryngology and head & neck 244 (1987), S. 88-90 
    ISSN: 1434-4726
    Schlagwort(e): Ciliary activity ; Otitis media with effusion ; Lipopolysaccharide ; Eustachian tube
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary We have used a tissue culture technique and a photoelectric method to examine the direct effect of lipopolysaccharide (LPS) on the ciliary activity present in the eustachian tube. Since LPS possesses the major part of the biological activity of endotoxin, our results show clearly that LPS deteriorates the ciliary activity in a dose-response fashion: LPS does not deteriorate the ciliary activity up to 168 h if its concentration is 1ng/ml or less; 10 ng/ml LPS can cause deterioration of the ciliary activity with extended exposure (more than 96 h); LPS can cause dysfunction of the cilia rather quickly if the concentration is 100 ng/ml or more. Our results show that the ciliary activity in the eustachian tube under clinical conditions can be affected by endotoxin.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Chichester [u.a.] : Wiley-Blackwell
    Surface and Interface Analysis 14 (1989), S. 595-597 
    ISSN: 0142-2421
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Physik
    Notizen: A new type of sputtered neutral mass spectrometer, named SNART (Sputtered Neutral Analysis - Riken Type), was evaluated. SNART uses an argon plasma that is driven by an electron beam. The plasma is used for both sputtering of the sample and post-ionizing the sputtered neutral atoms. A depth profile of multilayered Ge/Si was taken by SNART to evaluate depth resolution. The quantitativeness of SNART was also checked using a stainless-steel sample. The results were compared with those by conventional SIMS and glow discharge optical emission spectrometry. The following features of SNART were confirmed: (1) high post-ionization efficiency; (2) high depth resolution; (3) high sputtering rate; (4) no matrix effect on post-ionization efficiency; and (5) high quantitativeness.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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