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  • 1970-1974  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Line patterns in wide-angle convergent beam electron diffraction (1971)
    Copenhagen : International Union of Crystallography (IUCr)
    Applied crystallography online 4 (1971), S. 482-487 
    Details
    ISSN: 1600-5767
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Geosciences , Physics
    Notes: Wide-angle convergent-beam electron diffraction patterns from thin single crystals show sets of parallel lines somewhat similar to Kikuchi or Kossel lines. In some cases, each line separates into a black and white line pair when the electron beam is defocused. It is shown that this separation depends on the curvature of the crystal. A method for analysis of the line geometry is proposed which takes into account the aberrations of the electron lens. Using a high-voltage transmission scanning electron microscope, through-focus series of patterns from graphite crystals have been obtained and analyzed to give values for the radius of curvature of the crystal. In defocussed patterns the distortions of the lattice by defects are clearly visible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0021889871007507
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    High-voltage electron microscopy of the cat adrenal medulla (1974)
    Springer
    Cellular and molecular life sciences 30 (1974), S. 1459-1460 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Nachweis, dass die catecholaminhaltigen Vesikel des Nebennierenmarkes eine sehr spezifische dreidimensionale Form haben, die sich bei der gewöhnlichen Transmissionselektronenmikroskopie nur durch Unregelmässigkeiten bemerkbar macht, jedoch mit Hilfe der Stereo-Elektronenmikroskopie mit Hochspannung sichtbar gemacht werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01919693
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The pattern of assimilate movement in potato plants (1973)
    Springer
    Potato research 16 (1973), S. 293-295 
    Details
    ISSN: 1871-4528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary Leaves at nodes 5, 7 and 9 (numbered from the base) on separate batches of plants were supplied with14CO2 at flowering and to further batches of plants 20 and 40 days after flowering. Of the tubers formed on a plant 20% arose from that portion of the stem within an arc of ±45 from the supply leaf but they contained 47% of the activity detected in all of the tubers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02361535
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The use of analytic surfaces for the design of centrifugal impellers by computer graphicsThis paper is Crown copyright and is reproduced with the permission of the Controller, Her Majesty's Stationery Office. (1973)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 7 (1973), S. 137-154 
    Details
    ISSN: 0029-5981
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: This paper shows how analytic surfaces can be used to define the vanes of an impeller of a centrifugal compressor. The analysis has been given of a cubic-linear patch for representing three-dimensional geometries. An example has shown how this type of patch can be successfully used to model the geometry of centrifugal or mixed flow impellers having 'swept back vanes at the outlet.The analysis has been programmed for the Atlas computer at the Computer Aided Design Centre (CADC), Cambridge and set up in such a way that the designer can examine systematically a range of impeller shapes.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nme.1620070205
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    Paper (German National Licenses)
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