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  • 1995-1999
  • 1965-1969
  • 1960-1964  (33)
  • 1963  (33)
Collection
Keywords
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Years
  • 1995-1999
  • 1965-1969
  • 1960-1964  (33)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Ultrasonic decolorization of safranine O (1963)
    Springer
    Colloid & polymer science 187 (1963), S. 53-56 
    Details
    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 Ultraschallbestrahlung (1 MHz, 225 W/cm2) erlauben die Untersuchung der Entfärbung von wä\riger Safranin-O-Lösung. Die erhaltenen spektrometrischen Daten zeigen das Verschwinden der Farbe im Laufe der Zeit. Diaceton-Alkohol, n-Propyl-, n-Butyl- und äthylalkohol, Dioxan und äther verhindern die Entfärbung. Wasserstoffperoxid beschleunigt sie nicht. Die Farbstoffmoleküle werden offensichtlich durch Kavitation abgebaut.
    Notes: Summary Ultrasonic radiation from Mullard generator with barium titanate crystal as transducer having a frequency of 1 Mc/sec and power output 225 w/sq. cm. have been used to study the decolorization of aqueous solution of safranine O. Absorption curves obtained from spectrophotometric data demonstrate the fading of the colour of the dyestuff with the time of exposure. Diacetone alcohol, n-propyl alcohol, n-butyl alcohol, ethyl alcohol, dioxan and ether inhibit the decolorization. Hydrogen peroxide does not help the decolorization. Cavitation is responsible for breaking the molecules of the dye.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01622718
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  • 2
    Electronic Resource
    Electronic Resource
    Ultrasonic decolorization of bromocresol green (1963)
    Springer
    Colloid & polymer science 188 (1963), S. 59-61 
    Details
    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 Ultraschallbestrahlung mit einemMullard-Generator und Bariumtitanatkristall als Übertrager (1 MHz) diente zur Beobachtung der Entfärbung wäßriger Bromkresolgrünlösungen. Die mikroskopischen Adsorptionskurven zeigen das Verschwinden der Farbe mit der Zeit an. Gegenwart geringer Beträge von Äthylalkohol, n-Propylalkohol, n-Butylalkohol, Diaceton, Alkohol und Aceton stoppen die Verfärbung. Ursache scheint Kavitation zu sein.
    Notes: Summary Ultrasonic radiations from aMullard generator with barium titanate crystal as transducer having a frequency 1 Mc/sec, have been used to study the decolorization of an aqueous solution of bromocresol green. Absorption curves obtained from spectrophotometric data demonstrate the fading of the colour of the dyestuff with the time of exposure. The presence of small amount of ethyl alcohol, n-propyl alcohol, n-butyl alcohol, diacetone alcohol and acetone separately inhibit the fading. Cavitation seems to be the cause of decolorization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01499606
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  • 3
    Electronic Resource
    Electronic Resource
    The influence of ultrasonic waves on manganese dioxide sol in the atmosphere of nitrogen (1963)
    Springer
    Colloid & polymer science 188 (1963), S. 136-138 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF01499906
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  • 4
    facet.materialart.
    Unknown
    Ultrasonic decolorization of safranine O (1963)
    Springer
    Details
    Publication Date: 1963-01-01
    Print ISSN: 0372-820X
    Electronic ISSN: 1435-1536
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 5
    facet.materialart.
    Unknown
    The influence of ultrasonic waves on manganese dioxide sol in the atmosphere of nitrogen (1963)
    Springer
    Details
    Publication Date: 1963-04-01
    Print ISSN: 0372-820X
    Electronic ISSN: 1435-1536
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Published by Springer
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  • 6
    Electronic Resource
    Electronic Resource
    The distribution of nutrients in the seed parts of bengal gram (1963)
    Springer
    Cellular and molecular life sciences 19 (1963), S. 154-155 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die bengalische «Gram»-Pflanze (Cicer arietinum L.) ist in Samenschale, Cotyledonen und Restteile des Embryos zerlegt worden. In diesen Fragmenten wurde die Verteilung von Protein, Extraktstoffen, Asche, Faseranteilen sowie Calzium, Phosphor und Eisen näher untersucht. In den relativ massiven Samenschalen fand sich auffallend viel Calcium, während die übrigen untersuchten Stoffe in den andern Pflanzenteilen (mit Ausnahme vom Faseranteil) nur geringfügig vorhanden waren. Die Cotyledonen, die mehr als 85% dieses Getreides ausmachen, zeigen chemisch ausgeglichene Verhältnisse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02171607
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  • 7
    Electronic Resource
    Electronic Resource
    Influence of ultrasonic waves on tellurium hydrosol (1963)
    Springer
    Colloid & polymer science 190 (1963), S. 60-62 
    Details
    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
    Notes: Summary The influence of ultrasonic waves (1 Mc/s 225 watts per sq. cm. electrical output to the transducer) on tellurium hydrosol prepared by the reduction of telluric acid with hydrazine hydrate has been studied in this paper. It is observed that the colloidal phase of the sol disappears on exposing the sol for three hours. The specific conductivity and hydrogen ion concentration shows a continuous increase with the time of exposure to ultrasonic waves. The colour of the sol changes from bluish-brown to colourless. The effect of hydrogen peroxide on the sol is also studied. The sol becomes unstable as soon as the stabilising tellurate and tellurite ions are rendered free under the action of ultrasonic waves. In presence of non-electrolytes as ethyl alcohol and acetone, the sol becomes stable to the action of ultrasonic waves. The changes in hydrogen ion concentration and specific conductivity become small. The colloidal phase does not disappear in three hours of exposure to ultrasonic waves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01499829
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  • 8
    Electronic Resource
    Electronic Resource
    Gaschromatographie (1963)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 193 (1963), S. 116-117 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00466842
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  • 9
    Electronic Resource
    Electronic Resource
    Der Reaktionsablauf der Diäthylperoxid-Zersetzung (1963)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 193 (1963), S. 306-307 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00634856
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  • 10
    Electronic Resource
    Electronic Resource
    Die Produkte der katalytischen Hydrierung von Methyllinolenat und Trilinolenin (1963)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 193 (1963), S. 307-307 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00634858
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