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  • 1990-1994  (3)
  • 1965-1969  (7)
  • Organic Chemistry  (5)
  • Polymer and Materials Science  (3)
  • Methylprednisolone  (2)
Source
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Mitochondrial changes in acute myopathy after treatment of respiratory failure with mechanical ventilation (acute relaxant-steroid myopathy) (1994)
    Springer
    Acta neuropathologica 88 (1994), S. 475-478 
    Details
    ISSN: 1432-0533
    Keywords: Myopathy ; Methylprednisolone ; Pancuronium ; Mitochondria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of acute myopathy was observed in the course of treatment of respiratory failure with mechanical ventilation combined with prolonged neuromuscular blockade and administration of corticosteroids. A muscle biopsy revealed degeneration of muscle fibres. Electron microscopy showed loss of thick filaments as well as nemaline rods, vacuoles and cytoplasmic bodies. The mitochondria were increased in number, many harbouring paracrystalline inclusions, which were hitherto unknown in this condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389502
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Mitochondrial changes in acute myopathy after treatment of respiratory failure with mechanical ventilation (acute relaxant-steroid myopathy) (1994)
    Springer
    Acta neuropathologica 88 (1994), S. 475-478 
    Details
    ISSN: 1432-0533
    Keywords: Key words Myopathy ; Methylprednisolone ; Pancuronium ; Mitochondria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of acute myopathy was observed in the course of treatment of respiratory failure with mechanical ventilation combined with prolonged neuromuscular blockade and administration of corticosteroids. A muscle biopsy revealed degeneration of muscle fibres. Electron microscopy showed loss of thick filaments as well as nemaline rods, vacuoles and cytoplasmic bodies. The mitochondria were increased in number, many harbouring paracrystalline inclusions, which were hitherto unknown in this condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389502
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Effect of morphology and degree of crystallinity on the infrared absorption spectra of linear polyethylene (1967)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-2: Polymer Physics 5 (1967), S. 239-262 
    Details
    ISSN: 0449-2978
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The infrared absorption spectra of selected crystalline and noncrystalline bands were studied in bulk-crystallized specimens of linear polyethylene which encompassed the extremely wide density range of 0.92-0.99 g./cm.3. The analysis of the data obtained at room temperature yield degrees of crystallinity by infrared methods which are in very good accord with the values deduced from the density measurements. Studies of the infrared spectra as a function of temperature give fusion curves which are in agreement with those obtained by thermodynamic methods. However, in order to obtain these latter results cognizance must be taken of the large negative temperature coefficient of the specific extinction coefficients of the crystalline bands from room temperature to the melting point. The necessary data to account for this phenomena were obtained from studies of the spectra of the n-paraffin, C94H190, where molecular crystals are formed. Analysis of the two gauche bands, at 1352 and 1303 cm.-1, which are assigned to the noncrystalline regions demonstrate that for bulk-crystallized samples of lowest densities the intensity ratio at room temperature is identical to that expected from the pure melt at this temperature. The conclusion is thus reached that the noncrystalline regions in these cases and the pure melt are structurally very similar. For samples of higher density, where the crystallite size is comparable to the extended chain length, the intensity ratio of the two gauche bands is altered. This change could reflect a change in the sequential distribution of gauche bonds. This intensity ratio for crystals formed from dilute solution is very similar to that for the high-density bulk-crystallized material and indicates a similarity in structure of the noncrystalline regions in the two cases.
    Additional Material: 14 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1967.160050201
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  • 4
    Electronic Resource
    Electronic Resource
    Graft polymerization of fluorinated monomer onto corona-treated PVA and cellulose films (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 48 (1993), S. 1825-1829 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Surface graft polymerization of a hydrophobic monomer, 2,2,3,3,3-pentafluoropropyl methacrylate (5FMA), onto hydrophilic poly(vinyl alcohol) (PVA) and cellulose films was studied after corona discharge of the films. It was found that grafting strongly depended on the reaction medium; especially, addition of alcohol to the monomer greatly accelerated graft polymerization. For instance, when an ethanol/ water /5FMA mixture (65/25/10, by volume) was used as the polymerization medium. the PVA and cellulose films corona-discharged for a few minutes exhibited a high contact angle up to 100° after 30 min polymerization, the graft density being approximately 170 μg/cm2 for cellulose and 80 μg/cm2 for PVA. © 1993 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1993.070481016
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  • 5
    Electronic Resource
    Electronic Resource
    Über Pterinchemie 18. Mitteilung [1] Monohydro- und Trihydropterin-Radikale (1967)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 50 (1967), S. 411-416 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: By oxydation of N(5)-methyl-6,7-diphenyl-5,6-dihydro- and N(5)-methyl-6,7-diphenyl-5,6,7,8-tetrahydro-pterine derivatives with perhydrol 8-monohydro- and 6,7,8-trihydro-pteridine radical cations are produced which are sufficiently stable for detection and structural elucidation by ESR. hyperfine analysis. The biological implications of these radicals for pteridine dependent hydroxylation and methyl transfer from 5-methylfolinic acid are discussed.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19670500210
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  • 6
    Electronic Resource
    Electronic Resource
    De la chimie des ptérines. 20e communication [1]. Obtention et comportement chimique de diphényl-6,7-tétrahydro-5,6,7,8-ptérines substituées ou non (1967)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 50 (1967), S. 1492-1498 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Les diphényl-6, 7-, méthyl-5-diphényl-6, 7- et méthyl-8-diphényl-6, 7-tétrahydro-5,6,7,8-ptérines ont été obtenues par reduction au NaBH4 des ptérines ou dihydroptérines correspondantes. Alors que la première et la troisième sont facilement réoxydées en dihydro-7, 8-ptérines, la méthyl-5-diphényl-6, 7-tétrahydroptérine, traitée par O2 ou par H2O2, fixe un atome d'oxygène pour donner la N(2′)-déhydro-hydroxy-4a-méthyl-5-diphényl-6, 7-tétrahydroptérine, stable. Tous ces corps ont été caractérisés par analyse élémentaire et par leurs spectres UV., de RMN. et de masse.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19670500607
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  • 7
    Electronic Resource
    Electronic Resource
    De la chimie des ptérines. 22e communication [1]. Sur le mécanisme d'oxydation des tétrahydroptérines et plus particulièrement de la méthyl-5-diphényl-6,7-tétrahydro-5,6,7,8-ptérine (1967)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 50 (1967), S. 1845-1851 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On décrit comment la méthyl-5-diphényl-6,7-tétrahydro-5,6,7,8-ptérine s'autoxyde en milieu alcalin en utilisant un atome-équivalent d'oxygène pour former l'hydroxy-4a-méthyl-5-tétrahydroptérine quinolique correspondante. L'oxydation est catalysée par Fe3+, qui forme d'abord un complexe avec la tétrahydroptérine. Dans ce complexe un électron est transféré de la tétrahydroptérine sur le fer. Un mécanisme radicalaire d'oxydation des tétrahydroptérines, basé sur ces données expérimentales, est proposé et discuté.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19670500719
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  • 8
    Electronic Resource
    Electronic Resource
    De la chimie des ptérines 27e communication, préliminaireUn mémoire détaillé doit paraître prochainement dans ce périodique.. [1] Sur l'éliminetion du reste N(5)-méthyle chez les méthyl-5-tétrahydro-5,6,7,8-ptérines (1969)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 52 (1969), S. 306-308 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: En milieu acide la méthyl-5-diphényl-6, 7-dihydro-5, 6-ptérine perd rapidement son reste méthyle et un H pour être transforméee en diphényl-6, 7-ptérine. Il semble qu'un des produits intermédiaires de la transformation soit la méthyl-5-diphényl-6, 7-dihydro-5, 8-ptérine. On suppose qu'à partir de cette ptérine il se forme un radical-cation perdant spontanément un proton en N(8) et le radical méthyle, phénomène qui pourrait bien être lié à la transéthylation biologique catalysée par les méthyl-5-ptérines hydrogénées.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19690520132
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  • 9
    Electronic Resource
    Electronic Resource
    Über Pterinchemie. 17. Mitteilung. Neuer Beitrag zum Studium eines von Tetrahydropterinen aktivierten Enzymmodelles der Hydroxylierung (1966)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 49 (1966), S. 1911-1915 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Anhand neuer experimenteller Ergebnisse wird für den Mechanismus der von Tetrahydropterin und Fe2+ bzw. Fe3+ katalysierten Hydroxylierung des Phenylalanins zum o-, m- und p-Tyrosin eine neue Hypothese formuliert, wobei zwei wichtige Punkte hervorgehoben werden: 1. Diese Hydroxylierung ist keine «gemischte» Oxydation, wie wir sie selbst früher postulierten; 2. N-Oxide sowie Tetrahydropterin-und HO-Radikale treten vermutlich als Zwischenprodukte der chemischen bzw. enzymatischen Hydroxylierung auf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19660490627
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  • 10
    Electronic Resource
    Electronic Resource
    The infrared determination of the degree of crystallinity of polyethylene crystallized from dilute solution (1966)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 4 (1966), S. 1043-1048 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1966.110041225
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