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  • 1935-1939  (21)
  • 1
    Electronic Resource
    Electronic Resource
    Die Radioaktivität des Kaliums (1935)
    Springer
    Naturwissenschaften 23 (1935), S. 583-585 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Zusammenfassung Kalium und Rubidium sind die einzigen außerhalb den radioaktiven Umwandlungsreihen liegenden, unter Aussendung von β-Strahlen zerfallenden Elemente. Die Deutung der Existenz solcher alleinstehender β-Strahler hat bis jetzt große Schwierigkeiten bereitet. Nach der Entdeckung der künstlichen Radioaktivität fallen diese Schwierigkeiten fort. Die unter der Einwirkung von Neutronen u. dgl. entstandenen radioaktiven Atomarten sind ja alleinstehende Gebilde, die meistens unter der Aussendung von β-Strahlen zerfallen. Gleichzeitig mit vielen anderen radioaktiven Atomarten sind in einem präterrestrischen Zeitraum auch das Kaliumisotop der Masse 40 und das Rubidiumisotop der Masse 86 entstanden, während jedoch die erstgenannten in der Zwischenzeit vollständig zerfallen sind, blieben von den letztgenannten nachweisbare Mengen zurück, die die Radioaktivität des Kaliums bzw. Rubidiums verursachen. Unsere Kenntnisse über die Radioaktivität des Kaliums und insbesondere die Ergebnisse der partiellen Trennung der Kaliumisotope sind mit den obigen Folgerungen im besten Einklang.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01492377
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Der schwere Wasserstoff in der Biologie (1935)
    Springer
    Naturwissenschaften 23 (1935), S. 775-780 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01496011
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Diffusion of Phosphate Ions into Blood Corpuscles (1938)
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 871-872 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE find on shaking labelled (radioactive) sodium phosphate of negligible weight with blood, that phosphate ions quickly enter the erythrocytes. In the course of three hours, nearly half the phosphate ions present in the plasma of rabbit's blood diffuses into the corpuscles. When labelled ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/142871b0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Molecular ‘Rejuvenation’ of Muscle Tissue (1938)
    [s.l.] : Nature Publishing Group
    Nature 141 (1938), S. 1097-1098 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE decomposition of creatine phosphoric acid during muscular action, and its rebuilding during rest, has been the subject of numerous detailed investigations. We were interested in the problem, if, and to what extent, creatine phosphoric acid molecules are decomposed and afterwards rebuilt, or ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1411097b0
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  • 5
    Electronic Resource
    Electronic Resource
    Action of Slow Neutrons on Rare Earth Elements (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 185-185 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN view of the discrepancy between the values obtained by different workers for the periods and the intensity of radiation emitted by the radio rare earth elements1–5 after neutron bombardment, we carried out a detailed investigation on this subject and also on the absorption of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137185a0
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  • 6
    Electronic Resource
    Electronic Resource
    Selective Absorption of Neutrons by Gold (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 149-150 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Six small gold disks, 15 mm. in diameter and 0.5 mm. thick, were placed in a hole in a cadmium plate and irradiated by slow neutrons, by putting the whole arrangement in a cavity in a large block of paraffin wax, near a radon-beryllium source. On measuring the activities of the successive ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137149b0
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  • 7
    Electronic Resource
    Electronic Resource
    Atomic Dynamics of Plant Growth (1936)
    [s.l.] : Nature Publishing Group
    Nature 137 (1936), S. 66-67 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SOME years ago, one of us investigated the circulation of lead1 in plants using a radioactive lead isotope as indicator. Recent developments in nuclear chemistry make it possible to prepare radioactive isotopes of several of the light elements which, in contrast with lead, are the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/137066a0
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  • 8
    Electronic Resource
    Electronic Resource
    Radioactive Indicators in the Study of Phosphorus Metabolism in Rats (1935)
    [s.l.] : Nature Publishing Group
    Nature 136 (1935), S. 754-755 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RECENT progress in the production of radioactive isotopes by neutron bombardment makes the radioactive isotope of phosphorus 15P32 easily accessible. This isotope, which has a half-life value of 17 days, can be utilised as an indicator of inactive phosphorus in the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/136754a0
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  • 9
    Electronic Resource
    Electronic Resource
    Artificial Radioactivity of Dysprosium and other Rare Earth Elements (1935)
    [s.l.] : Nature Publishing Group
    Nature 136 (1935), S. 103-103 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN their pioneer work on artificial radioactivity through neutron bombardment, Fermi and his collaborators announced the discovery of the activity of some of the rare earth elements, namely, of lanthanum, praseodymium, neodymium, samarium and gadolinium. Recently, Sugden1 found ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/136103a0
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  • 10
    Electronic Resource
    Electronic Resource
    Lecithinæmia following the Administration of Fat (1937)
    [s.l.] : Nature Publishing Group
    Nature 140 (1937), S. 275-276 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ABOUT two hours after the administration of a meal containing fat, the fat content of the blood begins to rise. Bloor1 found that when olive oil is administered to a dog, besides an increase in the neutral fat content of the blood an increase in its lecithin content also takes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/140275a0
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