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  • Wiley-Blackwell  (9)
  • Nature Publishing Group  (7)
  • Oxford University Press
  • 1965-1969  (16)
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Publisher
Year
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 151-155 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE possibility has frequently been suggested and discussed that all meteorites which have become available for observation have originated from the same parent body, or from a comparable set of parent bodies, of asteroid dimensions. Such a theory is supported by hitherto observed instances of ...
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 218 (1968), S. 1239-1240 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The type I carbonaceous chondrites, with IL = 24-30 per cent, contain the maximum percentage of ground mass of hydrated silicates and carbonaceous matter, in which the olivine and other high temperature minerals are dispersed as small globules (microchondrules) wThich often have exsolution cores ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 1134-1135 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE theories of the origin of meteorites have been summarized by Mason1 and Anders2. Parent bodies of cometary, asteroidal or moon dimensions are visualized in th most generally discussed up to date hypothesis of genesis. Urey3 suggests a "complex" origin through the break-up of a moon-sized object ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 206 (1965), S. 23-25 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CARBONACEOUS chondrites consist of anhydrous silicates, troilite, magnetite, formed at high temperatures, which are embedded into a finely divided, volatile-containing ground mass formed at low temperatures, consisting of hydrated silicates and of carbonaceous complexes. The theories proposed so ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 1200-1201 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In their new arguments for a biogenic origin for the structures, Claus and Suba-C commented that the histograms of these colourless globules show three maxima which seem to correspond to three distinct species of the hypothetical organisms. It appears that they did not see the histogram of similar ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 1131-1134 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The nitrate deposits in the North Chilean desert seem to have been formed in two ...
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 244-245 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Alpenrhein drains a total area of 6,122 km2, a chiefly mountainous region in the Northern Alps of Switzerland and Austria. According to Waibel3, between 1931 and 1960 the average water flow was 223.6 m3/sec and the average suspended sediment load was 454.1 mg/1. Thus the river supplied an ...
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  • 8
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 91 (1966), S. 212-230 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: 2,3,6-Glucose-tricarbanilate prepared by degradation of cellulosetricarbanilate in 1-hydroxy-2-methoxy-ethane in presence of p-toluenesulfonic acid was condensed with phosphorpentoxide in a mixture of chloroform-dimethyl sulfoxide. Light scattering measurements gave degrees of polymerization up to 640. Contrarily to cellulose- and amylosetricarbanilates there was no definite relation between the STAUDINGER-Indices and molecular weights. Also no angular dependence of the scattered light was found. The products therefore are branched. The side chains are bound to the carbanilate groups, for after alkaline saponification of the polyglucosans the degrees of polymerization decrease to about 60. Degradation experiments with α-amylase and cellulase, optical rotation in tetraethylammoniumhydroxide and viscosity measurements of polyglucosans compared with those of different cellodextrins showed clearly that only 1,4-β-glucosidic linkages are present in the synthetic polysaccharides and that the products are not branched.
    Notes: 2,3,6-Glucosetricarbanilat  -  aus Cellulosetricarbanilat durch Alkoholyse in 1-Hydroxy-2-methoxy-äthan in Gegenwart von p-Toluolsulfosäure hergestellt  -  wurde in Chloroform/Dimethylsulfoxid durch Phosphorpentoxid kondensiert. Streulichtmessungen der Polykondensate ergaben Polymerisationsgrade bis 640. Zum Unterschied von Cellulose- und Amylosetricarbanilaten wurde keine eindeutige Beziehung zwischen STAUDINGER-Indices und Molekulargewichten gefunden. Die Streulichtintensität ergab keine Winkelabhängigkeit. Die Produkte müssen daher verzweigt sein. Die Seitenketten sind an die Carbanilatgruppen gebunden, denn nach alkalischer Verseifung lagen die Polymerisationsgrade bei ca. 60. Aus Abbauversuchen mit α-Amylase und Cellulase, Drehwerten in Tetraäthylammoniumhydroxid und vergleichenden Viskositätsmessungen an den Polyglucosanen und verschiendenen Cellodextrinen geht hervor, daß nur 1,4-β-glucosidische Bindungen in den synthetischen Polysacchariden vorliegen und daß die Produkte unverzweigt sind.
    Additional Material: 2 Ill.
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  • 9
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aus frischen Fruchtkörpern von Amanita muscaria (L. ex FR.) HOOKER, wurden Prämuscimol, C5H8O5N2, Smp. 145° (Zers.) und Muscazon, C5H6O4N2, isoliert. Beide Substanzen reagieren mit Ninhydrin gelb. Prämuscimol geht leicht unter Wasser- und CO2-Abspaltung in Muscimol über. Prämuscimol wirkt wie Muscimol stark narkosepotenzierend.
    Additional Material: 1 Tab.
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 48 (1965), S. 910-926 
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es wird die Isolierung einer Substanz mit stark narkosepotenzierender Wirkung, des Muscimols C4H6O2N2, Smp. 155-156°, aus dem Fliegenpilz (Amanita muscaria (L. ex FR.) HOOKER) beschrieben. Die Substanz hat salzartigen Charakter (Betain). Muscimol ist kein genuiner Inhaltsstoff des Fliegenpilzes, sondern entsteht bei der Aufarbeitung aus einer labilen Vorstufe, die ähnliche pharmakologische Wirkungen aufweist. Der Nachweis dieser Verbindungen in Papierchromatogrammen und in Elektropherogrammen wird beschrieben. Sie sprechen mit Ninhydrin gelb, mit GROTE's Reagens blau an. Als empfindliches Nachweismittel für Indole auf Papierchromatogrammen wird Phenylheptatrienal eingeführt.
    Additional Material: 13 Ill.
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