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  • Nature Publishing Group  (13)
  • Wiley-Blackwell  (2)
  • 1960-1964  (15)
Document type
Publisher
Year
  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 189 (1961), S. 297-298 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Wafers of semi-insulating gallium arsenide were prepared from bulk ingots by cutting grinding and etching. Typical dimensions were 3 x 3 x 0-15 mm. Tin contacts of 0-5 mm. diameter were alloyed at the centres of the two large faces. This configuration makes any surface leakage paths between ...
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 403-405 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Energy-levels of the model to be considered Fig. 2. Fermi-level as a function of acceptor concentration for fixed donor concentration (schematic) As normally prepared in this laboratory undoped gallium arsenide is n-type with about 1016 electrons/ cm.3, which come from a residual impurity ...
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 195 (1962), S. 939-943 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THIS is a preliminary report of investigations made with the satellite Injun I of the artificial radiation belt produced by a nuclear device recently exploded at a high altitude. The officially available information on this burst is contained in the international AOIWARN message of July 9, 1962, ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 199 (1963), S. 1078-1079 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] REPEATED freeze thawing of micro-organisms is generally considered to be lethal1,2 unless some protection is provided, such as immersion in glycerol. The experiments reported here demonstrate the ability of some organisms to survive and grow well under freeze thaw cycles typical of day night ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 198 (1963), S. 847-849 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IN a useful commentary on Soviet papers in sediment-ology which are little known in the West, Hemingway and Clarke1 emphasize the importance of appreciating cross-stratification as a three-dimensional geometry. They point out that the appearance of a vertical section in a trough or festoon ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 1148-1150 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A SYNTHESIS, including additional evidence of structural results obtained by Greenly1 in Anglesey, Shackleton2 in south-west Ireland, Jones3 und Shackleton4 in Wales, and Ball and Dineley5 in the Welsh Borderland, combined with an analysis of boreholes to concealed Palaeozoic rocks in England, ...
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 1167-1167 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The reason for the use of mercury is that a cathode spot on a mercury pool can supply virtually unlimited currents. Furthermore, the cathode is indestructible since the mercury which is blasted away from the spot afterwards returns to the pool. It is possible, however, to utilize the properties of ...
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 194 (1962), S. 167-169 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A CLEARER understanding and more satisfactory classification than hitherto of asymmetrical ripple marks formed in water has resulted from a previously unattempted quantitative morphological analysis of small current ripples and asymmetrical ‘sand-waves’, using published and unpublished ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 187 (1960), S. 51-51 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We wish to point out that the interaction of an exciton with an electric field may be more easily observed. Suppose the exciton is describable in te?ms of a hydrogen-like s-function. Then it can be shown that in an electric field F its energy is decreased to a first approximation by : A E == - y. ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 185 (1960), S. 336-337 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] During a survey of the sublittoral fauna of the Clyde sea area from 1949 onwards, it has been observed that the shells of many living molluscs are encrusted with a black deposit. In particular, this was the case of molluscs taken from muds and sandy-muds at depths of 15-105 fathoms. Although this ...
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