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  • Articles: DFG German National Licenses  (2)
  • 1990-1994  (2)
  • glycerolipids  (1)
  • percolation  (1)
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  • Articles: DFG German National Licenses  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Double percolation effect on the electrical conductivity of conductive particles filled polymer blends (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 134-139 
    Details
    ISSN: 1435-1536
    Keywords: Electrical conductivity ; conductive fillers ; polymer blend ; percolation
    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 Electrical conductivity of carbon black (CB) filled polymer blends which are incompatible with each other was studied as a function of the polymer's blend ratio. Transmission electron microscope (TEM) analysis shows that CB distributes unevenly in each component of a polymer blend. TEM photographs of phase structure of solvent extracted HDPE/PMMA blend and solvent extraction experiments of PMMA/PP blend detect the blend ratio at which the structural continuity of filler rich phase is formed. The electrical conductivity of polymer blends is found to be determined by two factors. One is the concentration of CB in the filler rich phase and the other is the structural continuity of this phase. This double percolation affects the conductivity of conductive particle filled polymer blends.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652179
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Feeding-stimulant activity of algal glycerolipids for marine herbivorous gastropods (1991)
    Springer
    Journal of chemical ecology 17 (1991), S. 185-193 
    Details
    ISSN: 1573-1561
    Keywords: Feeding-stimulants ; phagostimulants ; herbivorous gastropods ; abalone ; Haliotis discus ; Turbo cornutus ; DGDG ; PC ; SQDG ; glycerolipids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Phagostimulant activity of glycerolipids such as digalactosyldiacylglycerol (DGDG), 6-sulfoquinovosyldiacylglycerol (SQDG), phosphatidylcholine (PC), phosphatidylethanolamine (PE), etc., have been examined using the Avicel plate method for three kinds of marine herbivorous gastropods, the abaloneHaliotis discus, the turban shellTurbo cornutus, and the topshellOmphalius pfeifferi. DGDG showed strong activity for all the test animals. SQDG was much less active than the other glycerolipids for abalone. The turban shell and the top shell responded more or less sensitively to all tested glycerolipids at doses of 10–20μg/sample zone.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00994432
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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