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  • Nature Publishing Group  (3,839)
  • 1975-1979  (3,839)
  • 1955-1959
  • 1975  (3,839)
  • 1
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    First fossil records of cephalopod statoliths (1975)
    Nature Publishing Group
    In:  Nature, 257 (5525). pp. 380-381.
    Details
    Publication Date: 2016-11-15
    Description: THE class Cephalopoda is represented by over 10,000 fossil species and about 1,000 living species. Almost the entire fossil record so far described consists of external or internal calcareous shells of the Ammonoidea, the Nautiloidea and some members of the Coleoidea. The subclass Coleoidea includes all but three (Nautilus spp.) of the living species of cephalopods, and is represented in the fossil record largely by the order Belemnitida which is important from the early Jurassic to the Eocene. Another coleoid order, the Sepioidea, including the living Sepia and Spirula have internal calcareous shells, and have left traces from the Upper Jurassic (Voltzia) to the present. The three remaining coleoid orders, the Teuthoidea, the Vampyromorpha and the Octopodida include all the remaining living cephalopods, comprising 29 teuthoid or squid families, one vampyromorph family and 12 octopod families.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
  • 2
    Electronic Resource
    Electronic Resource
    A hundred years ago (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 398-398 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE words of Mr Disraeli on Monday night with regard to University Reform are also very cheering to those who wish to see some decided action taken towards the thorough reform of our Universities. Mr Disraeli's words were very strong, so strong indeed as to amount to an assurance that Government ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253398b0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Recent advances in electrical recording from the human brain (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 401-407 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] New techniques for recording evoked potentials to sensory stimulation have led to applications with both theoretical and practical implications. Evoked potentials can be used as a diagnostic tool in some pathological conditions, as well as shedding light on the mechanisms by which sensory ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253401a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Spectra of the Jupiter radio bursts (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 415-417 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Like the solar radio bursts, the dynamic spectra provide a convenient basis for classification, and the existence of at least two classes, the L bursts with a time scale of seconds and the S bursts with a time scale of milliseconds, has been recognised by earlier observers3'4. But with the better ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253415a0
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  • 5
    Electronic Resource
    Electronic Resource
    Duration of the Kuroko mineralisation episode (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 428-429 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Most of the results have been obtained from red ferruginous chert, which commonly overlies the Koroko ore in beds 1-1 Om thick. Chert deposition seems to have been the last stage in the Kuroko mineralisation process7. The chert consists of quartz (diameter 10-600 jam) and very fine grained ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253428a0
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  • 6
    Electronic Resource
    Electronic Resource
    Deglaciation of the Labrador continental shelf (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 429-431 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] More than 20% of the Hamilton Bank area is topographically rough (bottom type I, Fig. 1) and has a local relief of 10-30 m (Fig. 2c, d). Side-scan sonar representations of this irregular surface are characterised by mottles; bathy-metric charts5 show numerous roughly circular, closed depressions ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253429a0
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  • 7
    Electronic Resource
    Electronic Resource
    A model illustrating the importance of timing in the regulation of breathing (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 440-442 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] (1) In the cat the afferent impulses from chemoreceptors are grouped in bursts the peaks of which correspond in time to the middle of the rising phase of the oscillations of carotid arterial PCO^ (refs 3 and 4); peak afferent discharge should thus be related to mid-expiration, the two events being ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253440a0
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  • 8
    Electronic Resource
    Electronic Resource
    Re-establishment of functional connections by regenerating central adrenergic and cholinergic axons (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 446-448 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] With the fluorescence histochemical technique the remarkable regenerative capacity of adult central mono-amine neurones is also revealed when lesioned noradrenergic neurones are allowed to 'reinnervate' a transplant of peripheral tissue placed in the brain or spinal cord2'3. In this experimental ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253446a0
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  • 9
    Electronic Resource
    Electronic Resource
    Lack of permeability of mouse placenta to maternal and foetal cells (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 453-455 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In the mouse, information exists only on the passage of blood cells from mother to foetus11"16. Both radioactive labelling11'15, and cytogenetic markers12"14'16, have been used to differentiate between foetal and maternal cells. The data are, however, inconsistent11"16, probably resulting from the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253453b0
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  • 10
    Electronic Resource
    Electronic Resource
    A simple cytochemical technique for demonstration of DNA in cells infected with mycoplasmas and viruses (1975)
    [s.l.] : Nature Publishing Group
    Nature 253 (1975), S. 461-462 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have investigated the use of DAPI in tissue culture systems and have found that it offers a very simple and sensitive procedure for detecting mycoplasma contamination. Mycoplasmas are a major source of contamination of many cell lines carried in the laboratory, and there are many techniques ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/253461a0
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