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  • Acidic and basic fluxing  (1)
  • Trace gases  (1)
  • activity comparison  (1)
  • frusemide  (1)
  • Springer  (3)
  • 1980-1984  (3)
  • 1945-1949
Collection
Keywords
Publisher
  • Springer  (3)
Years
  • 1980-1984  (3)
  • 1945-1949
Year
  • 1
    Electronic Resource
    Electronic Resource
    Variance comparison as a tool in clinical pharmacology: An example with two loop diuretics (1982)
    Springer
    European journal of clinical pharmacology 23 (1982), S. 221-224 
    Details
    ISSN: 1432-1041
    Keywords: frusemide ; piretanide ; variance comparison ; regularity of effect ; activity comparison ; drug excretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Comparison of variances can be useful in assessing the regularity of drug effects. In order to compare the variances of the saluretic effects of piretanide and frusemide, two loop diuretics with different bioavailabilities, a double-blind cross-over study was carried out in 34 normal volunteers. The diuretics were given in randomized order, with an interval of 7 days, in single equipotent doses (frusemide 6.25 mg and piretanide 1.0 mg chosen from previous results) adjusted by body weight. The dispersion of individual values (comparison of variances from paired measures) for Na+, Cl− and Ca++ excretion, urine osmolality and excretion of the drugs, was significantly smaller for piretanide than for frusemide. It is concluded that the saluretic effect of a single dose of piretanide varies less than that of an equipotent dose of frusemide. The methodology may be useful in trials of drugs for which regularity of effect is important.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00547557
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of electrode potential on the corrosion of gas turbine alloys in sulfate melts (1982)
    Springer
    Oxidation of metals 18 (1982), S. 195-223 
    Details
    ISSN: 1573-4889
    Keywords: Acidic and basic fluxing ; hot corrosion ; sulfate melts, super alloys
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The influence of the electrode potential on the corrosion behavior of a series of nickel- and cobalt-base gas turbine alloys has been investigated in a (mole %) 53Na2SO4+7CaSO4+40MgSO4 melt at 1073 and 1173 K and in a 90Na2SO4+10K2SO4 melt at 1173 K. Only acidic fluxing is observed in the (Na 2,Ca, Mg)SO4 melt at positive potentials while a protective scale rich in MgO is formed on all alloys at negative potentials. This scale prevents basic fluxing because MgO is insoluble in neutral and basic melts. The breakthrough potential for acidic fluxing is a function of the material composition. Increasing chromium content of the alloys extends the potential range of protective film formation. Acidic and basic fluxing are observed in the (Na, K)2SO4 melt. Acidic fluxing occurs at positive and basic fluxing at negative potentials. A protective scale is formed in an intermediate (neutral) potential range on the high-chromium alloys IN-597 and IN-738 LC. Here, too, the breakthrough potentials for acidic and basic fluxing are influenced by the composition of the alloys.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00662038
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  • 3
    Electronic Resource
    Electronic Resource
    Trace gas measurements during aircraft flights in the tropopause region over Europe and North Africa (1984)
    Springer
    Journal of atmospheric chemistry 2 (1984), S. 133-143 
    Details
    ISSN: 1573-0662
    Keywords: Trace gases ; methane ; carbon monoxide ; nitrous oxide ; distribution ; tropospheric-stratospheric exchange
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Geosciences
    Notes: Abstract During aircraft flights in May 1981 from Munich (40°N) to north of the Spitsbergen Islands (82°N) and to Monrovia, Liberia (6°N), air samples were obtained in the altitude range of 8 to 11 km and during the ascents and descents near the airports. These samples have been analyzed for the trace gas mixing ratios of CH4, CO and N2O. The results of these analyses are presented and discussed. The results provide new evidence of tropospheric-stratospheric exchange events in the vicinity of the subpolar and subtropical tropopause foldings and possibly show a case of transport of CO-enriched air in the upper troposphere above the North Atlantic Ocean.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00114127
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