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  • 1985-1989  (3)
  • A-stability  (1)
  • Chemistry  (1)
  • Papillomavirus DNA  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    BIT 29 (1989), S. 295-310 
    ISSN: 1572-9125
    Keywords: 65L05 ; 65L20 ; 65D07 ; Ordinary differential equations ; collocation methods ; A-stability ; confluence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper the general classV of spline-collocation methods presented by Mülthei is investigated. The methods ofV approximate solutions of first order initial value problems. ClassV contains as subclass the methods of so-called multivalue type, and in particular contains the generalized singly-implicit methods treated by Butcher. Any multivalue type representativeU εV yields a matrix valued function Ω corresponding toU, which characterizes the region of absolute stability ofU. If a sequence (U(δ)) of multivalue type representatives ofV tending to some singlevalue type representative $$\tilde U$$ εV is considered, it can easily be seen by the structure of Ω, that the sequence of the greatest eigenvalues of the Ω(.,δ) tends to the stability function $$\tilde R$$ corresponding to $$\tilde U$$ . This fact allows one to construct one-parameter families of A-stable methods of multivalue type.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Archives of dermatological research 278 (1986), S. 219-223 
    ISSN: 1432-069X
    Keywords: Renal allograft patients ; Warts ; Papillomavirus DNA
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Renal allograft recipients were shown to have an increased incidence of warts and skin cancers. We examined 148 patients for evidence of wart virus infections and tested for papillomavirus types, which are known to be associated with human malignancies. Of the 148, 36 (24.3%) patients were afflicted with warts at the end of our study period, in contrast to 5 of 148 (3.3%) before transplantation. DNA from 16 different biopsies was extracted by phenol treatment for further virological studies. DNA of human papillomavirus (HPV) 2 was detected three times, DNA of HPV 4 and 10 twice, and DNA of HPV 3 and 16 once each by blot hybridization. One probe led to strong signals with HPV types previously found only in epidermodysplasia verruciformis patients. A correlation between histology and virus type exsisted in cases of HPV 2, 3, 4, and 10 infections.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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