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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 129 (1978), S. 157-165 
    ISSN: 1432-1076
    Keywords: Maple syrup urine disease ; emergency treatment ; Exchange transfusion ; Neonatal period ; Calorie intake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Three patients with maple syrup urine disease were treated during the acute neonatal stage. Multiple exchange transfusions proved to be a satisfactory means of achieving rapid clinical and biochemical improvement during this phase. On the other hand, evidence is provided suggesting that in addition to exchange transfusions, a high calorie intake above 150 Cal/kg body weight/day is necessary to lower the plasma concentration of the branched chain amino acids to near-normal levels. As long as this calorie intake was not provided, further exchange transfusions failed to lower the plasma leucine concentration to below 17 mg/100 ml in one patient. It is assumed that this high calorie intake is necessary to prevent the breakdown of endogenous protein. Treatment of acute episodes in maple syrup urine disease should therefore not only eliminate the elevated alpha-keto acids and branched chain amino acids quickly (i.e. by multiple exchange transfusions or peritoneal dialysis), but in addition should provide a high calorie intake.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The r-values of the monomer pair acrylonitrile/allylbenzene in the radical bulk and solution polymerization, using hexamethylphosphoric acid triamide, dimethylsulfoxide, γ-butyrolactone, ethylene carbonate and nitromethane as solvents, have been determind. A copolymerization equation is derived, considering the degradative chain transfer, associate formation and solvent effect, by which the deviations from the Mayo-Lewis concept and the solvent effects can be explained.
    Notes: Die r-Werte des Monomerpaares Acrylnitril/Allylbenzol wurden bei der radikalischen Copolymerisation in Substanz bzw. in den Lösungsmitteln Hexamethylphosphorsäuretriamid, Dimethylsulfoxid, γ-Butyrolacton, Ethylencarbonat und Nitromethan bestimmt. Unter Berücksichtigung der degradativen Kettenübertragung, der Assoziatbildung und des Lösungsmitteleinflusses wurde eine Copolymerisationsgleichung abgeleitet, mit deren Hilfe die Abweichung vom Mayo-Lewis-Modell und Lösungsmitteleffekte interpretierbar sind.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In order to investigate the deviation of the copolymerization of acrylonitrile with allyl benzene from the Mayo-Lewis model caused by association the temperature-dependence of the r-values in different solvents and at different monomer ratios was determined. Independent comparison is achieved by 1H and 13C-NMR spectra of allyl benzene in tetrachloromethane and nitromethane.
    Notes: Zur Untersuchung der Abweichung vom MAYO-LEWIS-Modell bei der Acrylnitril-Allylbenzol-Copolymerisation durch Assoziatbildung wurde die Temperaturabhängigkeit der r-Werte in verschiedenen Lösungsmitteln und bei unterschiedlichen Monomermischungsverhältnissen bestimmt. Zum unabhängigen Vergleich dienten 1H- und 13C-NMR-Spektren des Allylbenzols in Tetrachlormethan und Nitromethan.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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