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  • Articles: DFG German National Licenses  (3)
  • 1990-1994  (3)
  • aldol condensation polymerization  (2)
  • Ceramide  (1)
Source
  • Articles: DFG German National Licenses  (3)
Material
Years
  • 1990-1994  (3)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Stratum corneum sphingolipids and free amino acids in experimentally-induced scaly skin (1992)
    Springer
    Archives of dermatological research 284 (1992), S. 363-367 
    Details
    ISSN: 1432-069X
    Keywords: Sphingolipids ; Ceramide ; Scaly skin ; Amino acids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Stratum corneum sphingolipids are of particular importance in maintaining the water permeability barrier of mammalian epidermis. Free amino acids also play an important role in water retention in the stratum corneum. To clarify the way in which these substances affect scaly skin, stratum corneum sphingolipids and free amino acids collected from artificially-induced scaly skin were analysed. Scaly skin was induced by tape stripping. The total amount of sphingolipids was quantified by gas chromatography and five of sphingolipid fractions were isolated and quantified by thin-layer chromatography. Free amino acids were analysed using a high-speed amino analyser. The total amount of sphingolipid in scaly skin did not differ statistically from that in control skin. However, a significant change in the distribution of the five sphingolipid species was observed in scaly skin and the total amount of amino acids was decreased in scaly skin. These results suggest that the distribution of these five types of sphingolipid and the total amount of amino acids are responsible for scaly skin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00372041
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Production of submicron-size monodisperse polymer particles having aldehyde groups by seeded aldol condensation polymerization (1993)
    Springer
    Colloid & polymer science 271 (1993), S. 109-113 
    Details
    ISSN: 1435-1536
    Keywords: Polymer emulsion ; seeded polymerization ; glutaraldehyde ; aldol condensation polymerization ; aldehyde group
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Submicron-size monodisperse polystyrene/polyglutaraldehyde composite particles having aldehyde groups at the surfaces were produced by seeded aldol condensation polymerization of glutaraldehyde in the presence of polystyrene particles prepared by emulsifier-free emulsion polymerization. This technique is expected to be useful for the production of size-controlled polymer particles having aldehyde groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651812
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Production of submicron-size monodisperse polymer particles having aldehyde groups by the seeded aldol condensation polymerization of glutaraldehyde (II) (1994)
    Springer
    Colloid & polymer science 272 (1994), S. 422-426 
    Details
    ISSN: 1435-1536
    Keywords: Polymer emulsion ; seeded polymerization ; glutaraldehyde ; aldol condensation polymerization ; aldehyde group
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Submicron-size monodisperse polystyrene/polyglutaraldehyde (PS/PGLA) composite particles having aldehyde groups at the surfaces were produced by the seeded aldol condensation polymerization of glutaraldehyde at various temperatures of 0∼40°C. Since a part of aldehyde groups was consumed by the Cannizzaro reaction (hemiacetal formation) as a intermolecular reaction of PGLA, the amount of aldehyde groups on PS/PGLA composite particles was varied by the competition between the aldol condensation reaction and the Cannizzaro reaction at the various temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00659454
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    Paper (German National Licenses)
    Fulltext
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