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  • 1985-1989  (2)
  • Level-index  (1)
  • asthma  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Root squaring using level-index arithmetic (1989)
    Springer
    Computing 43 (1989), S. 171-185 
    Details
    ISSN: 1436-5057
    Keywords: 65G99 ; 65H05 ; Level-index ; symmetric level-index ; root-squaring ; polynomial equations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Description / Table of Contents: Zusammenfassung Das “symmetrische Höhenindexsystem” (sli) zur Zahlendarstellung vereinfacht die Überwachung der Rechengenauigkeit und vermeidet overflow—oder underflow—Probleme. In dieser Arbeit werden die praktischen Vorzüge des Systems am Beispiel des Graeffeverfahrens vorgeführt.
    Notes: Abstract The symmetric level-index,sli, system for representing numbers eases the monitoring of precision while avoiding the problems associated with overflow and underflow. In this paper the practical benefits of the system are displayed, using the root-squaring method of Graeffe as a vehicle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02241860
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The relationship between theophylline clearance and age in adult life (1989)
    Springer
    European journal of clinical pharmacology 36 (1989), S. 29-34 
    Details
    ISSN: 1432-1041
    Keywords: theophylline ; asthma ; clearance ; age ; adults ; elderly ; normal subjects
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Fifty three subjects (31 normal volunteers and 22 patients with asthma) between the ages of 20 and 87 years had their theophylline clearance measured. Volume of distribution (V) and terminal elimination half-life (t1/2) were also calculated in the volunteers who received i.v. theophylline. Although patients tended to have higher clearance values than volunteers, in both groups the oldest third had the lowest clearances. For the combined group (corrected for the patient effect) the oldest third (mean age 70 years) had a mean clearance of 0.53 versus 0.72 for the middle third (mean age 47 years) and 0.73 ml/min/kg CBW for the youngest third (mean age 26 years). There was no statistically significant age related change in V/kg CBW but t1/2 did rise with increasing age. Thus, although clearance does not fall with increasing age during younger adult life, there is a fall during late adult life becoming apparent in the seventh, eighth and ninth decades.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00561019
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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