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  • 1
    ISSN: 1573-2568
    Keywords: esophageal stenosis ; esophagitis ; peptic ; gastroesophageal reflux
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In 10 patients with peptic esophageal stricture the effect of esophageal dilatation on intraesophageal pH, stricture diameter, and dysphagia has been studied. Percentage of time during which intraesophageal pH was 〈4 and the number of reflux episodes per hour did not change significantly. Stricture diameter increased slightly, but consistently, from 7.0±0.5 mm to 9.1±0.5 mm (P 〈0.01) four days after dilatation, but was not significantly different from predilatation values after 12 weeks. Improvement in symptoms of dysphagia was striking ( P 〈0.01) four days and six weeks after dilatation, but worsened again at 12 weeks (P=NS). It is unlikely that esophageal dilatation adversely affects the intraesophageal environment.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 680-684 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Kinetic Studies of the Reactions of Methyl Radicals with AlleneThe addition of methyl radicals to allene has been studied in the temperature range 573…595 K. The methyl radicals were produced by thermal decomposition of azomethane. It has been shown that the additions take place with a very high selectivity at the terminal carbon atoms in allene. The rate constant k2 of the addition can be expressed by the following Arrhenius equation: \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm k}_{{\rm 2 }} = 10^{7,76 \pm 0,2} {\rm e}^{{{ - \left({28,6 \pm 1,0} \right){\rm kJmol}} \mathord{\left/ {\vphantom {{ - \left({28,6 \pm 1,0} \right){\rm kJmol}} {{\rm RT}}}} \right. \kern-\nulldelimiterspace} {{\rm RT}}}} {\rm M}^{ - 1} {\rm s}^{ - 1} $$\end{document}
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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