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  • Nature Publishing Group  (53)
  • American Association for the Advancement of Science  (31)
  • 1965-1969  (84)
  • 1
    Electronic Resource
    Electronic Resource
    Changes of Immunoreactivity of Proinsulin induced by Rat Tissue Extracts (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 696-697 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] An extrapancreatic trypsin-like enzyme or enzyme system capable of converting proinsulin to insulin or an insulin-like molecule has therefore been postulated4,6. We describe here investigations carried out in vitro to establish the existence and location of this enzyme or enzyme system. The liver, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/224696a0
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  • 2
    Electronic Resource
    Electronic Resource
    Molecular Scanner (1969)
    [s.l.] : Nature Publishing Group
    Nature 222 (1969), S. 261-263 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The apparatus (for details of molecular beam techniques see ref. 1), shown in Fig. 1, consists of a brass vacuum envelope maintained at a pressure of 107 torr by pumps and liquid nitrogen traps. The sample, with one face ground to expose the alumina fragments, as shown in Fig. 2, is held in a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/222261a0
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  • 3
    Electronic Resource
    Electronic Resource
    Conversion of α-Ecdysone to β-Ecdysone by Crustaceans and Insects (1969)
    [s.l.] : Nature Publishing Group
    Nature 221 (1969), S. 955-956 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We used three species of animals: (1) an actively moulting population of young San Francisco Bay shrimp, Orangon nigricauda; (2) two groups of male fiddler crabs, Uca pugilator, one group consisting primarily of inter-moult animals, the other group consisting of animals in which the premoult ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/221955a0
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  • 4
    Electronic Resource
    Electronic Resource
    Naming the Units (1968)
    [s.l.] : Nature Publishing Group
    Nature 220 (1968), S. 311-311 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-The letter from G. Gamow proposing names for units involving 109 contains some well merited honours such as 1 Rutherford (= 109 electron volts) and some happy inventions such as 1 inferno (= 109 K). However, his statement that the British, inter alia, have no name for 109 is surely very ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/220311b0
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  • 5
    Electronic Resource
    Electronic Resource
    Arthropod Succession and Decomposition of Buried Pigs (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 1180-1181 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We used baby pigs, Sus scrofa Linnaeus, which were stillborn or which died soon after birth and which were stored in plastic bags in a freezer until required. At Clemson, in the South Carolina Piedmont, we dug five burial pits (37 x 45 cm, with depths varying from 50 to 100 cm) in clay soil of a ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2191180a0
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  • 6
    Electronic Resource
    Electronic Resource
    Semi-annual Variation in Upper-atmosphere Density: Evidence of a 33-Month Periodicity (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 715-716 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have recently determined6 values of air density at heights near 470 km from an analysis of the orbit of the satellite 1966118.4, which is in an almost exactly circular orbit at an inclination of 75 to the equator. A total of ninety-four values of air density at heights of 440 to 500 km were ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/219715a0
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  • 7
    Electronic Resource
    Electronic Resource
    On the Identity of the Fur Seals of Australia (1968)
    [s.l.] : Nature Publishing Group
    Nature 219 (1968), S. 632-633 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The three Australasian species of Arctocephalus that have been described are A. doriferus Wood Jones 1925 (ref. 1), A. tasmaniciis Scott and Lord 1926 (ref. 2) and A. forsteri (Lesson 1828) (ref. 3), the latter known as the New Zealand fur seal from its main concentration. Whether all three species ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/219632b0
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  • 8
    Electronic Resource
    Electronic Resource
    Semi-annual Variation in Upper Atmosphere Density (1968)
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 833-834 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] First, Newell remarks that the enhanced semi-annual variation at a height of 190 km cannot be accounted for by Cook's explanation3 of the semi-annual variation at a height of 1,100 km, in terms of variations in the concentration of helium at heights near the turbopause (about 120 km). In one ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/217833a0
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  • 9
    Electronic Resource
    Electronic Resource
    Rotational Speed of the Upper Atmosphere : an Increase with Height above 200 km (1967)
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 1048-1048 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Recently we completed an analysis of the changes in the orbital inclinations of the following nine satellites: 1962β, 1962β1, 2, 5 and 6, 196595B, and 196651A, B and C. Their inclinations range between 49 and 90, and the heights to which the values of L apply, taken as half a scale height above the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2151048a0
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  • 10
    Electronic Resource
    Electronic Resource
    What Place for Engineers? (1967)
    [s.l.] : Nature Publishing Group
    Nature 215 (1967), S. 449-450 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR,-On June 17 you commented on Professor Thring?s article advocating the establishment of an academy for engineers. Much of this discussion was based on the example of the recently created National Academy of Engineering in the United States which, as you rightly said, has a number of features ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/215449b0
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