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  • 1960-1964  (19)
  • 1955-1959  (15)
  • 1925-1929  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Coagulation of Blood and Milk by Electrolytes and the Similarity between the Clotting of Blood and the Formation of Jellies (1929)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 33 (1929), S. 459-466 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j150297a014
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  • 2
    Electronic Resource
    Electronic Resource
    Structural Study of the Complex Barium Citrate by Ultrasonic Waves (1964)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 68 (1964), S. 3078-3080 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100792a512
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  • 3
    Electronic Resource
    Electronic Resource
    Fluorescence Spectrum of Anisole Vapour (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 268-268 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The spectrum extends from 2700 A. to 3100 A,, and consists of about 60 bands degraded towards the red. A ptrong continuum covering the whole region mars the sharpness of the bands which have been measured on a Hilger comparator using IOWT-power objective. The mean of three measurements are taken ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/193268a0
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  • 4
    Electronic Resource
    Electronic Resource
    Inhibition of Ultrasonic Decolorization of Rhodamine B in Presence of Organic Substances (1961)
    [s.l.] : Nature Publishing Group
    Nature 191 (1961), S. 1292-1292 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Colorimetric readings in presence of: Expo- Methyl ethyl n- n- Diace- sure alco- alco- propyl butyl tone Ace- (min.) Blank hoi hoi alco- alco- alco- tone Dioxan Ether hoi hoi hoi 0 338 338 338 337 338 337 338 338 337 5 126 313 330 335 337 330 335 337 334 10 65 310 327 333 335 328 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1911292a0
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  • 5
    Electronic Resource
    Electronic Resource
    Untersuchungen über kolloidale SulfosalicylsÄure (1955)
    Springer
    Colloid & polymer science 142 (1955), S. 24-27 
    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: Summary 1. Conductometric studies of complex formation between iron (III) and colloidal mercuri-sulphosalicylic acid and sulphosalicylic acid have been made in an acidic medium. 2. Both with mercuri-sulphosalicylic and sulphosalicylic acids, iron (III) reacts to form a violet complex at a ratio of 1∶1 of the reactants.
    Notes: Zusammenfassung 1. Es wurden LeitfÄhigkeitsmessungen zur Untersuchung der Komplexbildung zwischen dreiwertigem Eisen und kolloider Quecksilber-SulfosalicylsÄure und SulfosalicylsÄure in saurem Medium durchgeführt. 2. Sowohl Quecksilber-SulfosalicylsÄure wie auch SulfosalicylsÄure bilden mit dreiwertigem Eisen einen violetten Komplex mit dem KomponentenverhÄltnis 1∶1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01511458
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  • 6
    Electronic Resource
    Electronic Resource
    The influence of ultrasonic waves on the hydrogen ion concentration and the stability of colloidal solutions (1958)
    Springer
    Colloid & polymer science 158 (1958), S. 33-35 
    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 Es wurde der Einfluß von Ultraschall auf die Wasserstoffionenkonzentration mehrerer Kolloide untersucht. Sole von Antimonsulfid, Arsensulfid, Zinnhydroxyd, Chromhydroxyd, Vanadiumpentoxyd und Mangandioxyd zeigen eine leichte Verminderung der pH-Werte. Andererseits lassen Sole von Preußisch-Blau, Kupferferrocyanid, Uranferrocyanid, Aluminiumhydroxyd und Cerhydroxyd einen Anstieg erkennen, während Ferriarsenat-, Ferriphosphat- und Ferrihydroxyd-Sole keinerlei Veränderung der pH-Werte zeigen. Außerdem koagulieren Sole von Antimonsulfid, Arsensulfid, Mangandioxyd und Uranferrocyanid bei längerer Beschallung, und Cerhydroxyd bildet ein Gel.
    Notes: Summary The influence of ultrasonic waves on the hydrogen ion concentration of several colloids have been studied It has been found that the sols of antimony sulphide, arsenious sulphide, stannic hydroxide, chromium hydroxide, vanadium pentoxide and manganese dioxide show slight decrease in pH values. On the other hand the sols of prussian blue, copper ferrocyanide, uranium ferrocyanide, aluminium hydroxide and cerium hydroxide show an increase and that of ferric arsenate, ferric phosphate and ferric hydroxide do not show any change in pH values. Further the sols of antimony sulphide, arsenic sulphide, manganese dioxide and uranium ferrocyanide coagulate on prolonged exposure and ceric hydroxide sol sets to a gel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01744654
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  • 7
    Electronic Resource
    Electronic Resource
    The influence of ultrasonic waves on the viscosity and stability of vanadium pentoxide sol (1959)
    Springer
    Colloid & polymer science 167 (1959), S. 39-41 
    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 Das Vanadium-Pentoxyd-Sol zeigt, wenn Ultraschall ausgesetzt, einen steigenden Wert an Wasserstoffionen-Konzentration und LeitfÄhigkeit. Es wird festgestellt, da\ diese VerÄnderung entweder einer übersÄttigung an Meta-VanadinsÄure in Gegenwart der Ultraschallwellen oder der Erzeugung von Peroxyd-VanadinsÄure unter Einflu\ von Wasserstoffsuperoxyd zuzuschreiben ist. Wasserstoffsuperoxyd wird bekanntlich unter diesen Bedingungen in Spuren gebildet. über die Änderung der ViskositÄt des fraglichen Sols in Gegenwart von Elektrolyten unter gleichzeitigem Einflu\ von Ultraschall wird ebenfalls berichtet.
    Notes: Summary The vanadium pentoxide sol when exposed to ultrasonic waves shows an increased value of hydrogen ion concentration and conductivity. It is postulated that this change is due to either supersaturation of metavanadic acid in presence of the high frequency waves or to the production of peroxyvanadic acid under the influence of hydrogen peroxide which is known to be formed in traces under these conditions. The change in viscosity of vanadium pentoxide sol in presence of electrolytes under the influence of ultrasonic waves has also been recorded.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01810120
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  • 8
    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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  • 9
    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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  • 10
    Electronic Resource
    Electronic Resource
    Selection of a Strain of Plasmodium berghei highly resistant to Chloroquine (‘Resochin’) (1957)
    [s.l.] : Nature Publishing Group
    Nature 179 (1957), S. 975-975 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The experimental selection of the strain was made in albino mice, the serial passages being exposed to progressively increasing doses of 'Resochin' solution administered intraperitoneally. The experiment involved 33 mouse passages during a period of about seven months. When the dose of drug ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/179975a0
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