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  • 1990-1994  (3)
  • 1993  (3)
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Erscheinungszeitraum
  • 1990-1994  (3)
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  • 1
    Digitale Medien
    Digitale Medien
    Optical measurement of crack propagation with high resolution (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 1822-1824 
    Details
    ISSN: 1089-7623
    Quelle: AIP Digital Archive
    Thema: Physik , Elektrotechnik, Elektronik, Nachrichtentechnik
    Notizen: A new optical method is established to measure the crack length and its velocity in transparent crystals by utilizing the total reflection of light beam at the cleavage crack plane. The optical system is constructed by using a laser, a PIN photodiode sensor, and a wave memory. With the apparatus the crack propagation velocity can be measured at any desired position inside the specimen with a time resolution of less than 1 μs. The measurement on a cleavage crack in NaCl reveals that the maximum speed of the crack is about 800 m/s and the fluctuation of the velocity occurs prior to the arrest.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1063/1.1144017
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  • 2
    Digitale Medien
    Digitale Medien
    Lichenoid skin lesions as a sign of β2-microglobulin-induced amyloidosis in a long-term haemodialysis patient (1993)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 128 (1993), S. 0 
    Details
    ISSN: 1365-2133
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: We report a case of β2-microglobulin-induced amyloidosis. The patient was a 40-year-old man suffering from non-amyloid nephropathy, who had been treated by haemodialysis for 20 years. Lichenoid skin lesions, consisting of groups of pin-head-sized shiny papules, were present on the arms and trunk. On histological examination, amyloid deposits were present, principally in the dermal papillae, hut also around the sweat ducts and hair follicles. The amyloid displayed potassium-permanganate-resistant Congo red affinity, and green birefringence under polarized light, Immuno-histochemically, β2-microglobulin was demonstrated in the lesions, confirming that they were a manifestation of β2-microglobulin-associated amyloidosis. Skin lesions of this type have not been reported previously in β2-microglobulin-associated amyloidosis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2133.1993.tb00266.x
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  • 3
    Digitale Medien
    Digitale Medien
    Shell effects on fissions of metal clusters (1993)
    Springer
    The European physical journal 26 (1993), S. 264-266 
    Details
    ISSN: 1434-6079
    Schlagwort(e): 36.40.+d ; 31.90.+s
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract We have investigated symmetrical and asymmetrical fissions of positively charged silver clusters by a shell correction method. Contour plots of the total electronic energy as a function of deformation parameters have been obtained. They show complicated topographies arising from the shell correction.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01429164
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