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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 104 (1982), S. 6886-6887 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 33 (1987), S. 109-110 
    ISSN: 1432-1041
    Keywords: bisoprolol ; cimetidine ; interaction ; renal clearance ; tubular secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 31 (1986), S. 59-62 
    ISSN: 1432-1041
    Keywords: bisoprolol ; cimetidine ; rifampicin ; interaction ; oxidative liver metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In 6 healthy volunteers the pharmacokinetics of bisoprolol under steady-state conditions was investigated over three consecutive phases: over 7 days of 10 mg of bisoprolol once daily per os, 7 days of 10 mg of bisoprolol once daily plus 400 mg of cimetidine t.i.d. and 14 days of 10 mg of bisoprolol and 600 mg of rifampicin once daily with adequate intervals free of medication. After therapy with bisoprolol alone peak plasma levels (C max ss ) of the beta-blocker were 55.5±6.4 ng/ml (x±SEM), area under the plasma level-time curve (AUCτ) was 597±70 ng/ml.h, total body clearance (CL) 15.8±1.8 l/h and elimination half-lives (t1/2β) 10.1±1.2 h. Cimetidine did not cause any significant changes in the pharmacokinetics of bisoprolol. Co-administration of rifampicin resulted in a decrease in C max ss (43.0±6.9 ng/ml), AUCτ (397±54 ng/ml·h) and t1/2β (6.2±0.4 h). Accordingly, total body clearance increased to 23.8±2.51/h (p〈0.05). In conclusion bisoprolol showed a statistically significant but probably clinically not important interaction with the enzyme-inducing drug rifampicin, but not with the enzyme inhibitor cimetidine.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Chemical Physics Letters 61 (1979), S. 262-265 
    ISSN: 0009-2614
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 258 (1980), S. 314-318 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Zusammenfassung In ataktischem Polystyrol (sowohl radikalisch als auch anionisch polymerisiert) konnten wir eine feldinduzierte DK-Änderung nachweisen, die sowohl unter dem Einfluß eines starken elektrischen Wechselfeldes als auch eines starken Gleichfeldes abläuft. Im Gleichfeld steigt der Wechselfeldverlust gemessen bei 50 Hz mit dem Logarithmus der Zeit (im Bereich einiger Tage) an und fällt nach Abschalten des Gleichfeldes ebenfalls mit logt (im vergleichbaren Zeitraum) wieder ab. Die wechselfeldinduzierte Nahordnung ist demgegenüber weniger stabil, sie zerfällt mit einer Zeitkonstante, die bei 1 Minute liegt. Die Untersuchung der Feld- (Wechsel- und Gleichfeld-) und Temperaturabhängigkeit dieses Effekts wird hinsichtlich der Phenyl-Seitengruppenbeweglichkeit und des lokalen Ordnungszustands diskutiert. Dabei handelt es sich um Volumeneigenschaften, die mit aufgelegten Blattgoldelektroden gemessen wurden. Im Gegensatz dazu, zeigen aufgedampfte Goldelektroden die Eigenschaften der Grenzfläche, und zwar ist tanδ temperaturunabhängig und fällt logarithmisch mit steigender Frequenz.
    Notes: Summary Investigations of the dielectric constant of atactic polystyrene (radical as well as anionic polymerized) influenced by strong a. c. and d. c. field show: a) Under the conditions of d. c. field the tanδ at 50 Hz increases (in the time range of some days) proportional to the logarithm of time and decreases (in an analogous time-range) following a logarithmic time-law after switching off the constant electric field. b) The state of order induced by an alternating field is stable for a short time and changes with a time-constant of about 1 minute. Investigations of the electric field (a. c. as well as d. c.) and temperature dependency of this effect are discussed concerning the phenyl side-group mobility and local state of order of PS. These properties are bulk properties measured with pressed-leaf gold electrodes. In contrast, evaporated gold electrodes show the interfacial properties of the PS/gold contact with a temperature independent tanδ depending linearly an the logarithm of frequency.
    Type of Medium: Electronic Resource
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