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  • 1965-1969  (9)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 213 (1967), S. 1079-1082 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Heats of fusion of inert gases can be calculated using a random close packed model of the liquid and intermolecular potential functions of the Lennard-Jones 6–12 type. Experimental agreement is improved by allowing small decreases in the nearest neighbour distances on melting. This might be ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 214 (1967), S. 265-266 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We cannot agree that wall effects are eliminated by using a flexible balloon: a glance at Fig. 1 of their article in fact shows very clearly the existence of large areas of highly ordered regular packing. Previous work on this wall effect2,3 has shown that regular crystalline patches are induced on ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 211 (1966), S. 280-280 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Prof. J. D. BERNAL Writes: "I agree with Mr. Clarke's criticism of Mr. Bagley's communication. The arrangement he illustrates is definitely a twin in terms of classical crystallography for the reasons which he gives. However, this seems to me more a matter of amending precise definitions of the ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 155-155 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I CONSIDER the studies contained in Prof. Mueller's article to be of great importance. Much has been shown by examining the single meteorite stone, but this work, for the most part, has consisted of investigations on the stone as a whole attributed to various classes. What Prof. Mueller has done in ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 1296-1296 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-In relation to the letter "Occurrence of Olivine in a Type I Carbonaceous Meteorite" from J. F. Kerridge of this laboratory in your issue of February 24, 1968 (Nature, 217, 729; 1968), I would like to make some comments, particularly on his interpretation of his observations, with which I do ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 269-270 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] For a change of state, using the second law U=-pV+TS where U is the initial energy change of 1 mole, p is the external pressure, T the temperature, and S the entropy change. For triple point calculations1 the term p V is negligible; for pressures an order of magnitude higher, it is not. Using ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @political quarterly 38 (1967), S. 0 
    ISSN: 1467-923X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Political Science
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Mineralogy and petrology 10 (1965), S. 331-340 
    ISSN: 1438-1168
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Zusammenfassung Es wird vorgeschlagen, die Nomenklatur von Reaktionen im festen Zustand dadurch klar zu machen, daß man zwischen Ausdrücken unterscheidet, welche benützt werden, a) um Beobachtungen über das orientierte Wachstum neuer Phasen zubeschreiben: SYNTAXIE, oder b) um diese orientierten Reaktionen in Begriffen der Kristallstruktur zuinterpretieren: TOPOTAXIE. Polymorphe Übergänge können alssyntaktische (odertopotaktische) Transformationen) oder Übergänge bezeichnet werden, zum Unterschied vonsyntaktischen (odertopotaktischen) Reaktionen. Mancheepitaxiale Reaktionen (bei denen das Substrat reagiert) könnensyntaktisch (odertopotaktisch) sein; das Kriterium für Topotaxie ist dreidimensionale Ähnlichkeit in Orientierung und Struktur zwischen reagierenden und End-Kristallen. Das detaillierte Studium des Reaktionsmechanismus kann die kausale Natur der Ähnlichkeit bestätigen oder verneinen. Übergangsfälle, die schwer zu klassifizieren sind, werden aufgezeigt. Der Einfluß von Symmetrie und Morphologie auf die Topotaxie wird besprochen. Einige Beispiele, von denen manche neu sind, werden aus den Systemen Mangan-, Nickel- und Eisenoxyd/Hydroxyd gebracht.
    Notes: Summary It is proposed to clarify the nomenclature of oriented solid state reactions by distinguishing between terms which are (a) used todescribe observations of oriented growth of new phases: —SYNTAXY; and (b) used tointerpret these oriented reactions in terms of crystal structure: —TOPOTAXY. Polymorphic transformations may be designated assyntactic (ortopotactic) transformations ortransitions, distinguishing them fromsyntactic (ortopotactic) reactions. Someepitaxial reactions (where the substrate reacts) may besyntactic (ortopotactic), the criterion for topotaxy being three-dimensional orientational and structural resemblance between reagent and product crystals. Detailed study of the mechanism of reaction may confirm or deny the causal nature of the resemblance. Intermediate cases, difficult to classify, are pointed out. The influence of symmetry and morphology on topotaxy is discussed. Examples, some of them new, are given from the manganese, nickel and iron oxide/hydroxide systems.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 393-394 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-Dr Donahoe's unduly alarmist and misleading letter concerning anomalous water (Nature, 224, 198; 1969) has come to our attention. As one of the groups currently trying to sort out the chaos surrounding this phenomenon, we feel a reply is called for, especially considering the alarming ...
    Type of Medium: Electronic Resource
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