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  • Articles: DFG German National Licenses  (2)
  • Electronic Resource  (2)
  • Key words. Computer vision, Variational convergence. AMS Classification. 45L05, 49F22.  (1)
  • nitrite  (1)
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  • Articles: DFG German National Licenses  (2)
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  • Electronic Resource  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Asymptotic Behavior of a Geman and McClure Discrete Model (2000)
    Springer
    Applied mathematics & optimization 41 (2000), S. 51-85 
    Details
    ISSN: 1432-0606
    Keywords: Key words. Computer vision, Variational convergence. AMS Classification. 45L05, 49F22.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract. In this paper we consider a class of discrete variational models derived from a theory of Geman and McClure (see [15]) and study their asymptotic behavior when their stepsize tends to zero. It is shown that a result of Γ -convergence toward a certain functional holds true if a characteristic parameter of these models obeys a well-defined dependence law upon the stepsize. Under this condition the Γ -limit is a modified form of the Mumford—Shah functional.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002459911004
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nitrite and nitrate levels in cerebrospinal fluid of normal subjects (1998)
    Springer
    Journal of neural transmission 105 (1998), S. 627-633 
    Details
    ISSN: 1435-1463
    Keywords: Keywords: Nitric oxide ; nitrite ; nitrate ; human CSF ; HPLC analysis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary. In order to evaluate the involvement of nitric oxide in neurologic disorders it is important to generate controlled values of its metabolites nitrite and nitrate in human cerebrospinal fluid (CSF). Samples of CSF obtained from 14 patients without neurologic diseases were analysed for nitrite and nitrate concentration by reverse phase chromatography with ultraviolet (UV) detection. For comparison, the levels of nitrite in the same samples were also measured by reverse phase chromatography coupled with electrochemical detection and those of nitrate by ion chromatography coupled with UV detection. A good correlation was found for the concentration values of both ions obtained with the two procedures. Then, 10.41 ± 0.47 ng/ml of nitrite and 2.92 ± 0.37 ng/ml of nitrate could be regarded as reliable values in control subjects. No correlation between age and levels of nitrite and nitrate was observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007020050084
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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