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  • Polymer and Materials Science  (2)
  • Coronary  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Single coronary artery originating from the right pulmonary artery (1984)
    Springer
    Pediatric cardiology 5 (1984), S. 301-306 
    Details
    ISSN: 1432-1971
    Schlagwort(e): Coronary ; Anomaly ; Aberrant ; Congenital
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary An infant with a single coronary artery originating from the right pulmonary artery branch is the subject of this report. He survived to the age of one month possibly because of the association of two ventricular septal defects. While the pulmonary vascular resistance remained high, perfusion of the heart muscle was accomplished due to the pulmonary hypertension. The electrocardiogram did not show typical signs of infarction, but poor left ventricular contractility was observed by echocardiogram. The diagnosis was made postmortem. This specific coronary malformation has not been previously described and needs to be included in the classification of congenital coronary arteries anomalies.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02424976
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  • 2
    Digitale Medien
    Digitale Medien
    Direct substitution of polyolefins (1968)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 4 (1968), S. 81-90 
    Details
    ISSN: 0003-3146
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Physik
    Beschreibung / Inhaltsverzeichnis: Die Umsetzung von Äthylen-Propylen-Copolymeren mit Spendern von Carboniumionen, wie zum Beispiel Isopropylbenzol, führt in Gegenwart von sauren Katalysatoren zur Einführung von aromatischen und hydroxylischen Gruppen in das Polymerengerüst. Gasfömige Hauptprodukte sind Isobutan und Propan. Die Reaktion ist von Kettenspaltung begleitet.
    Notizen: Reaction of solutions of ethylene-propylene copolymer with carbonium ion sources, such as isopropylbenzene, in the presence of acid catalysts leads to the introduction of the aromatic and hydroxylic moieties onto the copolymer backbone. Major gaseous products are isobutane and propane. Chain scission accompanies the reaction.
    Zusätzliches Material: 4 Tab.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/apmc.1968.050040104
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  • 3
    Digitale Medien
    Digitale Medien
    Evaluation of recycled PP/rubber/talc hybrids (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 58 (1995), S. 527-535 
    Details
    ISSN: 0021-8995
    Schlagwort(e): Chemistry ; Polymer and Materials Science
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie , Maschinenbau , Physik
    Notizen: Mechanical properties of recycled PP/rubber/filler systems were studied and mechanisms were discussed on the basis of molar mass and molar mass distribution, morphologies, and thermal behavior. Characteristics of recycled PP/rubber/filler depend on degradation of PP and additional components. Recycling processes decreased impact strength, but it seemed not to affect tensile properties significantly. Aging with UV and moisture affected mechanical properties by some degree of PP chain scissions and ethylene chain crosslinking in EP rubber. Inorganic filler acted as a crack center and accelerated aging degradation. Paint decreased mechanical properties significantly by introducing stress concentrations. Recycle processing decreased the molar mass and increased the molar mass distribution of PP. Aging with UV decreased crystallization temperature and increased crystallization half-time by decreasing nucleation. © 1995 John Wiley & Sons, Inc.
    Zusätzliches Material: 9 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/app.1995.070580306
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