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  • Artikel: DFG Deutsche Nationallizenzen  (3)
  • 1990-1994  (3)
  • China  (1)
  • Dopamine antagonists  (1)
  • Helicoidal cell walls  (1)
Datenquelle
  • Artikel: DFG Deutsche Nationallizenzen  (3)
Materialart
Erscheinungszeitraum
Jahr
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Environmental management 18 (1994), S. 889-899 
    ISSN: 1432-1009
    Schlagwort(e): China ; Glass ; Hard plastic ; Paper ; Polystyrene foam cups
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Energietechnik
    Notizen: Abstract A group of five different types of reusable and disposable hot drink cups have been analyzed in detail with respect to their overall energy costs during fabrication and use. Electricity generating methods and efficiencies have been found to be key factors in the primary energy consumption for the washing of reusable cups and a less important factor in cup fabrication. In Canada or the United States, over 500 or more use cycles, reusable cups are found to have about the same or slightly more energy consumption, use for use, as moulded polystyrene foam cups used once and then discarded. For the same area paper cups used once and discarded are found to consume less fossil fuel energy per use than any of the other cup types examined. Details of this analysis, which could facilitate the comparative assessment of other scenarios, are presented.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Psychopharmacology 111 (1993), S. 106-108 
    ISSN: 1432-2072
    Schlagwort(e): Nicotine ; Dopamine antagonists ; Hypoactivity ; Hyperactivity ; Antinociception ; Mice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Abstract Pretreatment with ineffective doses of the D1 antagonist SCH23390 but not the D2 antagonist sulpiride reduced hyperactivity induced by nicotine in mice habituated to the test cage. On the other hand, the D1 and D2 antagonists were ineffective in blocking nicotine-induced hypoactivity in naive mice. Finally, SCH23390 and sulpiride did not block the antinociception induced by nicotine. Our data indicate that the dopamine receptors D1 and D2 are not involved in all the central effects of nicotine in mice, but seems to be a substrate for locomotor activation induced by nicotine under specific experimental conditions.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Protoplasma 167 (1992), S. 33-42 
    ISSN: 1615-6102
    Schlagwort(e): Daucus carota ; Zea mays ; Vigna radiata ; Helicoidal cell walls ; Polylamellate cell walls ; Rapid-freeze deep-etch
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary This paper reports on preliminary investigations into the structure of cell walls of varying complexity as revealed by the rapidfreeze deep-etch technique. Three cell types from different species were examined in order to compare the three-dimensional arrangement of random, polylamellate and helicoidal walls. Each cell type displayed a distinctive level of organisation with respect to the cellulose microfibrils and the matrix material. In polylamellated walls, the microfibrils within each layer were linked to each other by 16–20 nm long side chains regularly spaced along the length of the microfibril. In helicoidal walls, the shifting of the microfibrils could cleary be seen, yet no recognisable structures were observed which could mediate this movement.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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