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  • 1
    Electronic Resource
    Electronic Resource
    Entropy Fluctuations in Liquid Helium II and the Rayleigh Line (1947)
    [s.l.] : Nature Publishing Group
    Nature 160 (1947), S. 750-750 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] IT is known1 that in the scattered light spectra of liquids the Rayleigh line exhibits an undisplaced component of the same frequency as the exciting light and two displaced components on either side of the undisplaced line. It was shown by Landau and Placzek2 that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/160750a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nuclear Thermodynamics and Showers (1947)
    [s.l.] : Nature Publishing Group
    Nature 159 (1947), S. 816-816 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE properties of a thermodynamic assembly consisting of atomic nuclei, nucleons, electrons and positrons, at high densities and at temperatures for which kT ∼ mc2 (m being the electron mass), have been studied by several investigators1; but the application of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/159816a0
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of polycrystalline sintered compacts of cubic boron nitride (1986)
    Springer
    Journal of materials science 21 (1986), S. 1765-1768 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Synthetic cubic boron nitride (CBN) compacts are an important tool material used extensively for the machining of hardened steels. The paper describes work on the synthesis and characterization of CBN compacts. A 200 tonne cubic press has been used for the generation of high pressures. Solid solutions of TiN and TiC have been used as the binder material. The CBN powder and the binder are homogenously mixed and the mixed powder is pressed in a steel die under a pressure of about 3 kbars (300 M Pa). The pellets so formed are the starting material for synthesizing the compacts. Compacts both with and without a tungsten carbide substrate have been synthesized. The best compacts are formed at 58kbar (5.8 G Pa) and 1450° C. The sintered compacts after grinding and polishing are characterized by using powder X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray analysis. Knoop hardness measurements made on the best CBN compacts give a hardness of 3400HK 0.5.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01114737
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    Paper (German National Licenses)
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