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  • 1
    Electronic Resource
    Electronic Resource
    Complexity of Fresh Hevea Latex (1948)
    [s.l.] : Nature Publishing Group
    Nature 161 (1948), S. 177-178 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] ALTHOUGH under difficult conditions, the work at the Netherlands Indies Rubber Research Institute at Buitenzorg (Java) was continued during the Japanese occupation. Since it will be a long time before the accumulated results of the years 1942-45 can be published in detail, some points of general ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/161177a0
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  • 2
    Electronic Resource
    Electronic Resource
    Activity of ‘Vitamin A-Acid’ in the Rat (1946)
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 622-623 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is a well-known fact that β-carotene is converted by mammals into vitamin A, which is stored in the liver. As vitamin A-acid is biologically active1, it seemed possible that this substance might also be converted into vitamin A. To investigate this question the following ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/158622c0
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  • 3
    Electronic Resource
    Electronic Resource
    Resistivity of Thin Nickel Films at Low Temperatures (1946)
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 100-101 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN an earlier communication1, we reported on measurements on the electrical resistance of thin nickel films. We found at that time that for a thickness greater than 40 mµ the films possess a positive temperature coefficient, whereas for smaller thicknesses the temperature ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/158100b0
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  • 4
    Electronic Resource
    Electronic Resource
    Biological Activity of Vitamin A Acid (1946)
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 60-60 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a previous communication in Nature1, we reported that the amount of vitamin A acid equivalent to one international unit of vitamin A (0.3 γ pure crystalline vitamin A or 0.6 γ pure β-carotene) as dependent on the method of administration. In the growth-test with A-deficient ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/158060a0
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  • 5
    Electronic Resource
    Electronic Resource
    Separation of Nuclear Isomers in the Electric Field (1946)
    [s.l.] : Nature Publishing Group
    Nature 157 (1946), S. 806-806 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Segré, Halford and Seaborg1 demonstrated the isomeric filiation of bromine 80 by a chemical method on the basis of the Szilard-Chalmers process. We have carried out experiments in which the isomeric filiation is proved by a physical method, collecting the isomers when partly ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/157806a0
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  • 6
    Electronic Resource
    Electronic Resource
    Origin of the First European Potatoes and Their Reaction to Length of Day (1946)
    [s.l.] : Nature Publishing Group
    Nature 157 (1946), S. 503-505 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] AMONG the consequences of the recent Russian expeditions to South America was a revival of interest in the origin of the European potato. There are two centres from which potatoes might have come: the Chiloe region of South Chile, and the Andes at tropical latitudes. Bukasov1 and his co-workers ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/157503a0
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  • 7
    Electronic Resource
    Electronic Resource
    X-Ray Examination of Self-Recovery in Metals (1946)
    [s.l.] : Nature Publishing Group
    Nature 157 (1946), S. 371-371 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MANY investigations of the distorted state of cold-worked metals have been carried out by means of X-ray powder photographs: partly of polycrystalline rods, partly of filed powders. In this respect X-ray photographs may show some interesting phenomena: (a) broadening of the reflexion lines; (b) ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/157371a0
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  • 8
    Electronic Resource
    Electronic Resource
    Activated Adsorption of Hydrogen in the Neighbourhood of the Curie Point (1945)
    [s.l.] : Nature Publishing Group
    Nature 155 (1945), S. 668-668 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN catalytic phenomena the ferromagnetic metals (iron, cobalt, nickel) possess a special interest. On the other hand, it is also known that adsorption phenomena are closely connected with catalysis. In continuation of systematic work carried out during recent years in this laboratory on ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/155668b0
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  • 9
    Electronic Resource
    Electronic Resource
    Use of Normal Human Plasma Fractions in Hæmophilia (1946)
    [s.l.] : Nature Publishing Group
    Nature 158 (1946), S. 447-447 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE availability of separated human plasma proteins resulting from recent advances in fractionation methods1 has provided the possibility of further investigations into the clotting mechanism in hæmophilia. It is of particular interest to find with which normal plasma fraction is ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/158447a0
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  • 10
    Electronic Resource
    Electronic Resource
    Synthesis of some Compounds Possessing Vitamin A Activity (1946)
    [s.l.] : Nature Publishing Group
    Nature 157 (1946), S. 190-191 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WE have prepared ‘vitamin A acid’ (VII) from β-ionone as indicated in the following scheme:... The following are the details of the different stages of this process. The preparation of ionylidene-crotonic-ester has been described by K. Ziegler in a German patent application. Ziegler ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/157190a0
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