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  • 11
    Electronic Resource
    Electronic Resource
    The frictional properties of joints in rock (1959)
    Springer
    Pure and applied geophysics 43 (1959), S. 148-158 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The conditions for sliding over artificial joint surfaces have been studied experimentally by cutting rock cylinders at various angles to their axes and studying slip over these surfaces in a triaxial testing apparatus. The types of joint used were: (i) filled with plaster to simulate a soft joint filling, (ii) bare surfaces ground approximately flat, and (iii) natural surfaces across which shear failure had taken place. The results agreed reasonably well with the simple theory for a constant coefficient of friction. Measured coefficients of friction lie in the range 0.5–0.8 and differ by surprisingly little between the various surfaces. The surfaces across which sliding has taken place exhibit interesting slickenside phenomena. Subsidiary failures frequently occur which cut across the joint surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01993552
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  • 12
    Electronic Resource
    Electronic Resource
    Lees's topographic correction in heat flow and the geothermal flux in Tasmania (1963)
    Springer
    Pure and applied geophysics 54 (1963), S. 53-63 
    Details
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Lees's topographic correction for a simple idealized hill is discussed and extended to a monoclinal structure. It is valuable as giving very simply the order of magnitude of the correction. A number of new measurements of temperature in Tasmanian boreholes has been made and the previous rather high value of over 2μ cal/cm2 sec for the heat flux has been confirmed. The variation of thermal conductivity through the thickness of a differentiated tholeiite sheet has been measured and found to be in reasonably good agreement with values calculated from chemical and modal analyses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01988254
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  • 13
    Electronic Resource
    Electronic Resource
    Peroxide accumulation in detergents
    Amsterdam : Elsevier
    Journal of Biochemical and Biophysical Methods 29 (1994), S. 77-81 
    Details
    ISSN: 0165-022X
    Keywords: Detergent ; Hydrogen peroxide ; Triton ; Tween
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0165-022X(94)90058-2
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  • 14
    Electronic Resource
    Electronic Resource
    Digestive clues (1990)
    [s.l.] : Nature Publishing Group
    Nature 347 (1990), S. 628-628 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WHEN palaeontologists or archaeologists discover a rich microvertebrate fauna, they are so concerned with its biochrono-logical and palaeoenvironmental infor-mation content that they forget to ask questions about the origin of these small vertebrates' assemblages, the causes of their death and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/347628a0
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  • 15
    Electronic Resource
    Electronic Resource
    Structure and evolution of the Himalaya–Tibet orogenic belt (1984)
    [s.l.] : Nature Publishing Group
    Nature 307 (1984), S. 17-22 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The 1981 French–Chinese expedition to Tibet focused on the Lhasa block, extending earlier coverage 400 km north of the Tsangpo suture. The Lhasa block stood between 10 and 15° N latitude over most of the Upper Cretaceous and Eocene and, if Gondwanian in origin, had detached from Gondwana ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/307017a0
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  • 16
    Electronic Resource
    Electronic Resource
    Sub-surface Temperatures on the Moon (1959)
    [s.l.] : Nature Publishing Group
    Nature 183 (1959), S. 1316-1317 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Information about the thermal conductivity near the surface is obtained from optical and radio microwave observations of the variation of the surface temperature during an eclipse or throughout a lunation. These yield a value of (Kpc)~112, where K, p and c are the thermal conductivity, density and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1831316a0
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  • 17
    Electronic Resource
    Electronic Resource
    Nature of the Surface of the Moon (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 1026-1026 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We made similar calculations in connexion with the microwave observations of Piddington and Minnett3, but have taken the matter a good deal further. In the accompanying graph, the dots show Pettit s4 observations of the 1939 eclipse, while curve I is calculated for a solid with (Kc)-1/2 = 1,030 : ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1661026a0
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  • 18
    Electronic Resource
    Electronic Resource
    Angular Distribution of Electron Pairs (1938)
    [s.l.] : Nature Publishing Group
    Nature 142 (1938), S. 573-573 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] A NUMBER of experiments have been made on the angular distribution of electron-positron pairs liberated by a beam of γ-rays, but the results, where it is possible to compare, them, do not seem to be in agreement. It is therefore of interest to see what the theory predicts, and in the following ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/142573a0
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  • 19
    Electronic Resource
    Electronic Resource
    Production of Electron Pairs (1941)
    [s.l.] : Nature Publishing Group
    Nature 148 (1941), S. 86-86 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SOME time ago we described a method1 for calculating rigorously (neglecting screening) the cross-section for production of electron-positron pairs in the field of a nucleus by a beam of γ-rays. This method also gave the energy distribution of the electrons or positrons. Results ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/148086b0
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  • 20
    Electronic Resource
    Electronic Resource
    African marsupials—vicariance or dispersion? (1984)
    [s.l.] : Nature Publishing Group
    Nature 312 (1984), S. 379-379 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] UNTIL recently the marsupials were not recorded in Africa, but two recent discoveries in the Lower Eocene and in Lower Oligocene of North Africa have demonstrated the presence of this group of mammals on the continent. Their phy-logeny and palaeobiogeography must, therefore, be reconstructed. The ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/312379a0
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