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  • 1
    ISSN: 1432-0428
    Keywords: Blood sugar response ; plasma insulin response ; serum cholesterol ; serum triglyceride ; atherosclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs présentent leurs observations sur la fréquence du taux anormal de cholestérol et de triglycérides sériques et sur les réponses anormales du glucose sanguin et de l'insuline provoquées par le test de tolérance au glucose chez 51 patients de sexe masculin présentant des troubles athérosclérotiques des vaisseaux périphériques. La comparaison des résultats relevés dans ce groupe avec ceux d'un groupe de 47 témoins strictement comparables par l'âge et le sexe a été faite. Les deux groupes présentaient un même degré d'obésité. L'anomalie la plus fréquente était une réponse de l'insuline du plasma plus prolongée et plus prononcée. Cette réponse était beaucoup plus fréquente chez les athérosclérotiques que chez les sujets normaux. Plus de 75% des malades ont montré une anomalie du taux de glucose sanguin ou de la réponse de l'insuline. Une augmentation du taux des lipides sanguins à jeûn était beaucoup plus rare bien que le taux moyen de cholestérol sérique ait été nettement supérieur à celui des sujets témoins.
    Abstract: Zusammenfassung Die Autoren berichten über die Häufigkeit von Anomalien der Nüchternwerte von Serumcholesterin und Serumtriglyzeriden und über anormale Blutzucker- und Plasmainsulinreaktionen nach einem oralen Glucosebelastungstest bei 51 männlichen Patienten mit atherosklerotischen peripheren Gefäßkrankheiten. Sie verglichen diese Befunde mit 47 gesunden Personen in einer nach Alter und Geschlecht vergleichbaren Gruppe. Die beiden Gruppen wiesen einen ähnlichen Grad von Adipositas auf. Die häufigste Anomalie war eine verlängerte und erhöhte Plasmainsulinreaktion, die viel häufiger bei den Atherosklerotikern als bei den Kontrollen vorkam. Über 75% der Patienten zeigten anormale Blutzucker-oder Insulinreaktionen. Eine Erhöhung der Nnchtern-Serumlipidwerte trat viel seltener auf, obwohl die mittleren Serumcholesterinspiegel bei den Atherosklerotikern signifikant höher lagen als bei den Kontrollen.
    Notes: Summary The incidence of abnormalities of fasting serum cholesterol and triglyceride levels and blood sugar and plasma insulin response to an oral glucose load have been investigated in a group of 51 male patients with atherosclerotic peripheral vascular disease. These have been compared with an age and sex matched group of 47 healthy controls. Both groups showed a similar degree of obesity. The most common single abnormality was a prolonged and increased plasma insulin response, which was much more frequently seen among patients than controls. Over 75% of the patients showed abnormality of blood sugar or insulin response. Elevation of fasting levels of serum lipids was considerably less common, although the mean serum cholesterol level of the patients was significantly higher than that of the controls. The relevance of these results is discussed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 35 (1997), S. 1261-1267 
    ISSN: 0887-6266
    Keywords: FTIR-ATR spectroscopy ; gravimetric sorption ; diffusion ; polymer ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In this study, vapor sorption FTIR-ATR (Fourier Transform Infrared Attenuated Total Reflectance) spectroscopy was combined with a conventional gravimetric sorption balance to examine diffusion in polymers. Mutual diffusion coefficients of methyl ethyl ketone in polyisobutylene were measured using both methods at various penetrant activities and temperatures in the range 40-60°C. Actual penetrant concentrations were determined from the sorption balance. The diffusion coefficients from the two techniques agree very well with each other. In addition, the diffusivity data from both techniques could be correlated successfully as a function of temperature and concentration with the Vrentas and Duda free-volume model. © 1997 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 35: 1261-1267, 1997
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Bognor Regis [u.a.] : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Physics 36 (1998), S. 337-344 
    ISSN: 0887-6266
    Keywords: infrared spectroscopy ; multicomponent ; diffusion ; polymer ; Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: In this study, diffusion coefficients of toluene/methyl ethyl ketone (MEK) mixtures in polyisobutylene were measured at 50°C using vapor sorption FTIR-ATR (Fourier Transform Infrared Attenuated Total Reflectance) spectroscopy. For three mixture compositions, the diffusion coefficients were determined using a diffusion framework for ternary systems. The “crossterm” diffusion coefficient for MEK was found to be very small under the experimental conditions studied here, while that for toluene was found to increase with increasing MEK concentration. On the basis of this finding, a binary diffusion model was used to determine diffusion coefficients for MEK over a wide range of mixture compositions and the results compared well with those determined from pure MEK transport data. Relative transport rates during integral sorption experiments with mixtures were used to explain the results. © 1998 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 36: 337-344, 1998
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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