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  • Nature Publishing Group  (128)
  • 2020-2021
  • 1990-1994  (60)
  • 1985-1989  (40)
  • 1950-1954  (28)
  • 1
    Digitale Medien
    Digitale Medien
    Development of the zootype (1993)
    [s.l.] : Nature Publishing Group
    Nature 363 (1993), S. 307-307 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR- Slack et al.1 propose a particular pattern of expression of the set of hom-ologous Hox genes as the defining character (synapomorphy) for the king-dom Animalia. The expression pattern of the Hox genes, which they name zoo-type, controls antero-posterior spatial re-lationships at a particular ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/363307b0
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  • 2
    Digitale Medien
    Digitale Medien
    More word play (1993)
    [s.l.] : Nature Publishing Group
    Nature 362 (1993), S. 595-595 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR — In the light of recent searches for words from languages in protein sequences transcribed by the single-letter amino acid code1, and in the spirit of Harvey's suggestion2, we report our findings from the circumsporozoite protein of the malaria parasite Plasmodium falciparum. This ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/362595b0
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  • 3
    Digitale Medien
    Digitale Medien
    Intensities of Discrete Radio Sources in Cygnus and Cassiopeia at 22.6 Mc.s. (1954)
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 819-820 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Recordings of the intensity of the discrete radio sources in Cygnus and Cassiopeia were made between June and November 1953. Ionospheric conditions frequently caused violent amplitude fluctuations, and at times there were not only severe decreases of intensity but also increases from the ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/173819a0
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  • 4
    Digitale Medien
    Digitale Medien
    Radiation-Widths of Nuclear Energy-Levels (1954)
    [s.l.] : Nature Publishing Group
    Nature 173 (1954), S. 942-943 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE radiation-widths of levels of low excitation can, if sufficiently narrow (~ 10~6 eV.), be determined directly from the life-time of the state. The vast majority of levels, however, have much greater widths, which are often obtainable from properties of the nuclear reactions in which the levels ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/173942a0
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  • 5
    Digitale Medien
    Digitale Medien
    Effects of Alkyl Groups in Nucleophilic Substitution (1953)
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 301-302 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] The polar requirements of the unimolecular mechanism (reaction 9) are clear. The rate-determining process consists of the separation of the expelled group with the electrons of the C X bond, and it should be facilitated unconditionally by electron release to the reaction centre. Consistently, it is ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/171301a0
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  • 6
    Digitale Medien
    Digitale Medien
    Abdominal Mechano-Receptors in Dytiscus and Locusta (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 531-532 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] DURING an investigation of the nervous control of respiratory movements in the water beetle Dytiscus marginalia, electrophysiological evidence has been obtained for the existence of sense organs responsive to these movements. The abdominal movements consist of an active expiratory phase in which ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/170531a0
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  • 7
    Digitale Medien
    Digitale Medien
    Triphenylchloroethylene, Tritylmethyl Chloride and Related Halides (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 986-987 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Tritylmethyl chloride (m.p. 101-5 ) was obtained in good yield from triphenylmethyl sodium and methylene chloride in ethereal solution. Tritylmethyl bromide (m.p. 93 ) was prepared similarly, but in poor yield. An attempt to obtain the iodide (see below) by the same method gave triphenylmethane and ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/167986b0
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  • 8
    Digitale Medien
    Digitale Medien
    ‘Giant’ Fibres in Dragonfly Nymphs (1953)
    [s.l.] : Nature Publishing Group
    Nature 171 (1953), S. 87-88 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] Fig. 1. Anax. Histogram to show sizes and frequencies of nerve fibres in the right and left commissures between the 3rd and 4th abdominal ganglia. The number of fibres is plotted on a logarithmic scale Histologically, the 'giant' fibres are of interest because they are surrounded by a definite ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/171087b0
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  • 9
    Digitale Medien
    Digitale Medien
    A Test of the Interpretation of X-Ray Patterns of Micelles (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 1017-1017 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In the first place, their multilayers, built upon the chrome plate from surface films, have dimensions parallel to the chrome surface far greater than the corresponding dimensions of lamellar micelles as commonly postulated in soap solutions. This will greatly modify their distribution of ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/1651017a0
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  • 10
    Digitale Medien
    Digitale Medien
    A Synthesis of Sparteine (1950)
    [s.l.] : Nature Publishing Group
    Nature 165 (1950), S. 35-36 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] In each case the last step is thought to proceed through the stages : reduction to an alcohol-dehydration-reduction. The condensation reactions suggested are obviously of the same kind as those proposed by Robinson for other alkaloids. Moreover, they clearly point to a close relationship between ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/165035a0
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