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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 61 (1939), S. 3089-3092 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 136 (1935), S. 107-107 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE lecture concerned dealt exclusively with certain aspects of seventeenth century alchemy, and Maier's musical compositions of 1618 may perhaps be taken as the last and most definite attempt to associate alchemy with music. Prof. Partington's early references are very ...
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 505-505 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a previous letter1 we described the measurement of the half-lives of a few elements made weakly radioactive by neutron bombardment. The same neutron source and method have been used to investigate the radioactivity produced by slow neutrons in metallic zinc, cæsium nitrate, ...
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 772-774 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A PART from the question of the time-continuity of the progressive series represented by, say, the Barrovian zones, there is the chemical continuity to be considered. How far do the zones of Barrow represent an isochemical series of pelitic rocks ? The degree to which such processes as meta-morphic ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 729-731 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] [THE consideration of the relation between L A metamorphism and igneous action, which forms the subject of Prof. ?. ?. Read's presidential address to Section C (Geology), falls into two parts. First, a brief historical summary of the peculiarly national contributions serves to display the wide ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 439-440 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Zimmer1 has attempted an exact comparison of the absorbed neutron and gamma-ray energy required to produce an equal increase in the mutation rate in Drosophila sperm. In all other cases1 neutron intensities have been measured in arbitrary units. In our own ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 509-509 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A considerable number of tissues have been exposed to very high energy Be-D neutrons (˜ 12 Mev.) with the help of cyclotrons, in the United States. The published values of the ratio γ/N of the gamma-ray to the neutron doses for a given biological effect range from 2 to 8. These ratios should be ...
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 144 (1939), S. 478-479 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The growing tips of broad bean roots have been irradiated by D-D neutrons (∼2.9 Mev.) and by gamma-rays by techniques already described1,2. The duration of irradiation and the variation of intensity along the length of the root was approximately the same for both radiations. The ...
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 135 (1935), S. 147-147 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN the course of recent work in radium beam therapy research, we had the opportunity of making investigations in artificial radioactivity induced in some of the heavier elements through the agency of neutrons. We had available a tube containing 500 mgm. of radium mixed with 2 gm. of ...
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 1074-1075 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] CHICK embryo fibroblasts have been irradiated in vitro by 2.4 Mev. neutrons produced by bombarding ‘heavy wax’ with ˜700 microamp. of 300 kv. deuterium ions. This nuclear reaction gives rise to not more than 1 quantum of γ-radiation per 200 neutrons1,2, and the specimens were ...
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