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  • Articles  (60)
  • Other Sources
  • Articles: DFG German National Licenses  (60)
  • 1970-1974  (14)
  • 1965-1969  (24)
  • 1960-1964  (15)
  • 1925-1929  (7)
  • 1
    Electronic Resource
    Electronic Resource
    Significance of Inclusions in Carbonaceous Meteorites (1966)
    [s.l.] : Nature Publishing Group
    Nature 210 (1966), S. 151-155 
    Details
    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 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/210151a0
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  • 2
    Electronic Resource
    Electronic Resource
    in vivo Destruction of Exogenously Applied Indolyl-3-Acetic Acid as Influenced by Naturally Occurring Phenolic Acids (1963)
    [s.l.] : Nature Publishing Group
    Nature 200 (1963), S. 761-763 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THERE is quite a controversy in the literature as to the growth activity of certain naturally occurring phenolic acids. While Vendrig and Buffel1'2 have stated that caffeie acid may be a very important growth substance, there is another possibility, that the phenols may act in vivo as inhibitors or ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/200761a0
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  • 3
    Electronic Resource
    Electronic Resource
    Anomalous Contrast in Electron Micrographs of Negative Stained Specimens (1964)
    [s.l.] : Nature Publishing Group
    Nature 201 (1964), S. 590-591 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The physical basis of this method is not yet understood and many authors have tried various interpretations25. By spraying single droplets of a phosphotungstate solution on to a specimen already prepared in the usual way itbecame possible to compare the brightness of embedded and free-lying ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/201590a0
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  • 4
    Electronic Resource
    Electronic Resource
    Interpretation of Micro-structures in Carbonaceous Meteorites (1965)
    [s.l.] : Nature Publishing Group
    Nature 205 (1965), S. 1200-1201 
    Details
    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 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2051200c0
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  • 5
    Electronic Resource
    Electronic Resource
    Interrelations between Volatilization Curves, Elemental Composition and Total Volatiles in Carbonaceous Chondrites (1965)
    [s.l.] : Nature Publishing Group
    Nature 206 (1965), S. 23-25 
    Details
    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 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/206023a0
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  • 6
    Electronic Resource
    Electronic Resource
    Genetic Histories of Nitrate Deposits from Antarctica and Chile (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 1131-1134 
    Details
    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 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2191131a0
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  • 7
    Electronic Resource
    Electronic Resource
    Dissolved Gases in East African Lakes (1963)
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 569-569 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN my opinion the suggestion that the carbon dioxide in Lake Kivu is of juvenile origin, whereas the methane is biogenic, is unacceptable on the ground that the concentration of the latter within the neighbouring Lakes Tanganyika and Nyasa is some 5-6 orders of magnitude lower (see Table 1 of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/198569a0
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  • 8
    Electronic Resource
    Electronic Resource
    Interpretation of Micro-Structures in Carbonaceous Meteorites (1962)
    [s.l.] : Nature Publishing Group
    Nature 196 (1962), S. 929-932 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE considerable number and variety of microscopical objects within the Orgueil and several other carbonaceous stones were interpreted by some authors1 o2 as of likely organic origin. These conclusions have been contested8 and critically discussed4'5. The aim of the present article is to attempt ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/196929a0
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  • 9
    Electronic Resource
    Electronic Resource
    The cosmo-petrological significance of the coalescence of microchondrules with the decrease of volatiles in chondrites (1969)
    Springer
    Astrophysics and space science 4 (1969), S. 3-43 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The type I carbonaceous chondrites, with volatiles between 24 and 30% (at 1000 C, N2 atm.), contain the maximum percentage of the low-temperature ground mass, in which the high-temperature minerals are dispersed as ‘microchondrules’. In the type II carbonaceous chondrites (vol. 12–24%), the loosely cohering aggregates of microchondrules, ‘grape-bunch chondrules’, reach a maximum. The type III carbonaceous chondrites and some enstatite chondrites (vol. 2–12%) contain the maximum of the ‘partly coalesced chondrules’, in which microchondrules of olivine and nickel-iron appear. The ureilites are interpreted as impact shocked aggregates of microchondrules in differing states of coalescence. The ‘fully coalesced chondrules’ are characteristic for the ordinary chondrites with volatiles below 1%. It appears that the evolution of chondrules with the decrease of volatiles in meteorites subdivides into: (A) primary condensation of microchondrules with diameters of 0.01 mm; (B) secondary accretion of the former into the chondrules of diameter range ±1 mm. The observations may be explained through the hypothesis that at the highest-temperature stage of condensation of the asteroid-type parent body was an incandescent cloud (preserved through the solidification of chondrules at an early stage of degassing) covered with cosmic dust. The carbonaceous chondrites orginate from the marginal incandescent fog and the correspondingly deeper zones of the incandescent cloud mantle. The absence of typical chondritic rocks on earth may be explained by the slower cooling rate of this celestial body of relatively greater mass.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651261
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  • 10
    Electronic Resource
    Electronic Resource
    Molekularstrahl-Experimente an zweiatomigen Molekülen in angeregten Schwingungszuständen: Elektrisches Dipolmoment und Quadrupolkopplungskonstante von CsF bisv=8 (1971)
    Springer
    The European physical journal 249 (1971), S. 168-184 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Radio frequency spectra of CsF in the rotational stateJ=1 have been measured for the vibrational statesv=0, 1,..., 8 using the molecular beam electric resonance method. The analysis of the spectra yields the electric dipole moment μv and the quadrupole coupling constanteq v Q connected with the quadrupole moment of the Cs nucleus. The results are: $$\begin{gathered} \mu _\upsilon = 7.8478 + 0.07026(\upsilon + 1/2) + 0.000195(\upsilon + 1/2)^2 debye \hfill \\ eq_\upsilon Q/h = 1245.2 - 16.2(\upsilon + 1/2) + 0.31(\upsilon + 1/2)^2 kHz. \hfill \\ \end{gathered} $$
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01408815
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