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  • Articles  (32)
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  • 1950-1954  (32)
  • Medicine  (32)
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  • Articles  (32)
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  • 1
    Electronic Resource
    Electronic Resource
    The Australopithecine Milk Canines (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 251-251 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] By the courtesy of Mr. J. T. Robinson, we have now been able to apply these methods to six other lower miJk canines found in South Africa. One of our tests1'2 employed the discriminant function, X = Xj - + 2-34x3 -f 4-70o;4, where #! is the height, x2 the maximum anterior-posterior length of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172251a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Factors affecting the Larval Spot Colours of the Emperor Moth, Saturnia pavonia L. (1954)
    [s.l.] : Nature Publishing Group
    Nature 174 (1954), S. 563-563 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I have observed that the spot colour of the individual larva changes progressively throughout the duration of the instar, being pale lemon-yellow immediately after the moult and generally orange or pink by the time of the next moult or ensuing pupation. This progressive colour change has been found ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/174563a0
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  • 3
    Electronic Resource
    Electronic Resource
    Use of Dissolved Acetylene in Liquid Scintillation Counters for the Measurement of Carbon-14 of Low Specific Activity (1954)
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 992-993 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The possibilities of using a crystal or plastic phosphor containing the sample do not appear very practicable. A more promising method is to introduce the sample into a liquid scintillation counter either as the solvent or as a solute, or possibly as a suspended material of suitable refractive ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/173992a0
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  • 4
    Electronic Resource
    Electronic Resource
    A New Type of Helium Liquefier (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 581-581 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Since then, Kapitza3 has built a helium liquefier incorporating an expansion engine in which a loose-fitting piston allowed gas to escape and so provide lubrication. Several people have built liquefiers based on Kapitza's original work, and Collins4, in particular, has developed this type of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172581a0
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  • 5
    Electronic Resource
    Electronic Resource
    Statistical Methods in Anthropology (1951)
    [s.l.] : Nature Publishing Group
    Nature 168 (1951), S. 794-794 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] This unhappy result can be traced to the piecemeal tests which have hitherto been used. A bone or a tooth is a unit ; it is not a discrete assembly of independent measurements. To compare its single variates one by one, as Ashton and Zuckerman have done3, is both inconclusive and misleading. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/168794a0
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of Carbon/Nitrogen Ratio upon the Formation of Nitrate and Ammonia from Amino-acids in Soil (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 152-152 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The importance of the carbon/nitrogen ratio in relation to biological processes in the soil has long been recognized1'2. Working with amino-acids, Batham3 reported that nitrification appeared to be independent of carbon/nitrogen ratio, but later4 observed a fairly close relationship for nitrogenous ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/166152a0
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  • 7
    Electronic Resource
    Electronic Resource
    Equilibrium between Ethoxide and Hydroxide Ions in Ethanol (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 583-584 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The results show a regular trend with solvent composition (the activity coefficients have not been included in K) ; they can, however, be extrapolated to zero water concentration, whence we find that in pure ethanol K = 0-7 ± 0-2. This implies that in a solution made by dissolving sodium or ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172583b0
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  • 8
    Electronic Resource
    Electronic Resource
    Kinetics of Reaction in Ethanol Solution from −80° C. to +20° C. (1953)
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 1124-1125 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The ion produced is coloured and the reaction can be followed photometrically. At room temperature, rates were measured on a rapid-reaction apparatus of the Hartridge-Roughton type using the 'stopped-flow' method2; the fastest reaction observed had a half-period of 0-2 sec. At the lower ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1711124a0
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  • 9
    Electronic Resource
    Electronic Resource
    An Uncommon Type of Bacteriophage (1952)
    [s.l.] : Nature Publishing Group
    Nature 169 (1952), S. 331-332 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Recently, we have encountered a coliphage, originally isolated from sewage, which is characterized by a preference for old (20-hr.) rather than young (4-hr.) cells of its host for optimal development. It was observed that the addition of phage to the former induces rapid lysis not preceded by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/169331a0
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  • 10
    Electronic Resource
    Electronic Resource
    Phase Coloration in Larvæ of Lepidoptera (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 1035-1035 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In 1943 Faure announced the discovery of phases in larvae of two South African Lepidoptera of the family Noctuidae, Laphygma exigua (the lesser army worm) and L. exempta (the army worm), with the possibilityv of its occurrence in a third species Spodoptera abyssinia. We have recently carried out ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1661035b0
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