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  • 1
    Electronic Resource
    Electronic Resource
    Polarised Photoluminescence of Adsorbed Molecules of Dyes (1934)
    [s.l.] : Nature Publishing Group
    Nature 133 (1934), S. 140-140 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I HAVE investigated the degree of polarisation of fluorescence and phosphorescence from ‘Cellophane’ films coloured by Kautsky's method1 (‘Cellophane’ phosphors). The molecules of the dye, adsorbed on the surface of the microcrystals of the film, cannot rotate ; therefore the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/133140a0
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of Temperature on the Pressure Broadening of Spectral Lines (1939)
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 594-594 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a former note1 we reported the results of our researches on the influence of temperature on the broadening of the mercury absorption line 2537 A. caused by helium at constant concentration of both gases. No changes of the line width exceeding the limits of experimental errors ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/144594a0
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  • 3
    Electronic Resource
    Electronic Resource
    Variability of Brucella Phages (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 703-704 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Phages 10/1, 24/11, 371/XXIX were used, which have been isolated from old Brucella bovis cultures and phage 212/XV isolated from a Brucella suis culture. Parnas3'4 isolated and described these phages. The strain Brucella bovis No. 12 in the S phase (smooth) has been used as indicator strain. 350 ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/193703a0
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  • 4
    Electronic Resource
    Electronic Resource
    Thermal Rotations of Fluorescent Molecules and Duration of Luminescence (1935)
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 582-582 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IMPROVED fluorometer measurements, to be published elsewhere in detail, of the duration of luminescence τ of dye molecules yielded an unexpected result, in that τ for fluoresceine in water or ethyl alcohol solution was found to be apparently greater than that in glycerine solution. This is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/135582a0
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  • 5
    Electronic Resource
    Electronic Resource
    Temperature Influence on the Pressure Broadening of Spectral Lines (1938)
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 1122-1122 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE classical theories of pressure broadening of spectral lines given by Lorentz1 and by Weisskopf2 lead to the following intensity distribution in an absorption line: subject to the condition ωγ/2. Here γ/2 is the number of collisions per second of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1421122a0
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  • 6
    Electronic Resource
    Electronic Resource
    Efficiency of Anti-Stokes Fluorescence in Dyes (1933)
    [s.l.] : Nature Publishing Group
    Nature 131 (1933), S. 839-840 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ACCORDING to Kautsky and his collaborators1, the majority of the molecules of dyes investigated by them, among which were also the molecules of fluoresceine, show an ability to phosphoresce when ‘energetically isolated’, for example, when adsorbed by convenient adsorbents. We can ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/131839b0
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  • 7
    Electronic Resource
    Electronic Resource
    Extinction: past and present (2004)
    [s.l.] : Nature Publishing Group
    Nature 427 (2004), S. 589-589 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Extinction is a fundamental part of nature — more than 99% of all species that ever lived are now extinct. Whereas the loss of ‘redundant’ species may be barely perceptible, more extensive losses of whole populations, groups of related species (clades) or those that share ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/427589a
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  • 8
    Electronic Resource
    Electronic Resource
    Progress at the K-T boundary (1997)
    [s.l.] : Nature Publishing Group
    Nature 387 (1997), S. 354-355 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The biotic upheaval at the end of the I Mesozoic Era, often termed the end-I Cretaceous or Cretaceous-Tertiary (K-T) mass extinction, was recognized by I8601. The past two decades, however, have seen an extraordinary wave of interdisciplinary research following the suggestion that geochemical ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/387354a0
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  • 9
    Electronic Resource
    Electronic Resource
    First fossil chimpanzee (2005)
    [s.l.] : Nature Publishing Group
    Nature 437 (2005), S. 105-108 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] There are thousands of fossils of hominins, but no fossil chimpanzee has yet been reported. The chimpanzee (Pan) is the closest living relative to humans. Chimpanzee populations today are confined to wooded West and central Africa, whereas most hominin fossil sites occur in the semi-arid East ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04008
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  • 10
    Electronic Resource
    Electronic Resource
    Palaeoenvironmental trends in the history of trace fossils (1988)
    [s.l.] : Nature Publishing Group
    Nature 333 (1988), S. 252-255 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] To investigate onshore-offshore trends for Zoophycos and Ophiomorpha, we have surveyed the literature of global Phanerozoic trace fossil occurrences. We have used the com-monly accepted definitions of these two trace fossil ichnogenera (binary nomenclature-ichnogenus and ichnospecies-is used to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/333252a0
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