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  • 1960-1964  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 188 (1963), S. 136-138 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung Der Einfluß von Ultraschall (1 mHz, 225 W/cm2) auf negativ geladenes Mangandioxidsol wurde unter Stickstoff unter Ausschluß von Sauerstoff untersucht. Die Stabilität des Sols ist in gleicher Weise wie bei Gegenwart von Luft verändert, nur wird das Sol bei Ausschluß von Sauerstoff weniger instabil. Die spezifische Leitfähigkeit steigt mit steigender Expositionszeit, während die Wasserstoffionenkonzentration praktisch konstant bleibt.
    Notes: Summary The influence of ultrasonic waves at 1 MC/sec and 225 watts/cm2 power on the negatively charged manganese dioxide sol has been investigated in an atmosphere of nitrogen and thereby excluding oxygen. The stability of the sol on exposure to ultrasonic waves is affected in a similar way as in presence of air but the extent to which the sol gets unstable on exposure is less in the absence of oxygen than in its presence. The specific conductivity increases but hydrogen ion concentration remains practically constant as the time of exposure increases.
    Type of Medium: Electronic Resource
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