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  • 1995-1999  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Formula for the asymmetric diffraction peak profiles based on double Soller slit geometry (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 2268-2272 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The asymmetric diffraction peak profiles and peak shift of conventional powder diffractometry systems caused by the angular divergence along the vertical axis are reproduced by asymmetrized peak profile functions. The asymmetrization is achieved by convoluting the angular dispersions of both incident and scattered beams along the vertical axis. A general method for mapping vertical window functions to the horizontal direction is proposed, and the formulas of two types of horizontal window functions mapped from symmetric double vertical Bartlett (triangular) and Gaussian window functions are presented. Both formulas incorporate a single asymmetry parameter connected with the open width of the Soller slits along the vertical direction. When experimental diffraction peak profiles are fitted by asymmetrized pseudo-Voigt functions, the asymmetry parameter gives good coincidence with the Soller slit angle, which is clearly specified in a given diffractometer. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148930
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    An efficient method for calculating asymmetric diffraction peak profiles (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 3837-3839 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An efficient method for evaluating asymmetric diffraction peak profile functions based on the convolution of the Lorentzian or Gaussian function with any asymmetric window function is proposed. When this method is applied to approximate the convolution with the Howard's window function [J. Appl. Crystallogr. 15, 615 (1982)], only a few terms of numerical integration give satisfactory results, even if the asymmetry is very strong. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149220
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Chronic renal failure due to granulomatous interstitial nephritis in sarcoidosis: Response to corticosteroid therapy (1998)
    Springer
    Clinical and experimental nephrology 2 (1998), S. 249-252 
    Details
    ISSN: 1437-7799
    Keywords: renal failure ; sarcoidosis ; interstitial nephritis ; corticosteroid therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Chronic renal failure due to granulomatous interstitial nephritis in sarcoidosis is a rare phenomenon, and its response to corticosteroid therapy is not well known. We report a patient with sarcoidosis who presented with chronic renal failure and hypercalcemia, but who did not exhibit nephrocalcinosis. Renal histology findings showed the presence of noncaseating granuloma and heavy interstitial nephritis. Although hypercalcemia was remarkably improved by corticosteroid therapy, chronic renal failure, due to interstitial fibrosis and scarring, remained unchanged. This case reinforces evidence supporting the effectiveness of corticosteroid therapy in granulomatous interstitial nephritis of sarcoidosis, and suggests the need for early initiation of the therapy to avoid permanent renal dysfunction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02480566
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    Paper (German National Licenses)
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