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  • 1990-1994  (3)
  • dispersionpolymerization  (2)
  • Biodynamic analysis  (1)
  • Bioelectrical impedance  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Estimation of distribution of vinyl groups in micron-sized monodisperse polymer microspheres by bromine titration method (1991)
    Springer
    Colloid & polymer science 269 (1991), S. 1126-1132 
    Details
    ISSN: 1435-1536
    Keywords: Polymeremulsion ; microsphere ; vinylgroup ; brominetitration ; dispersionpolymerization ; seededpolymerization
    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 The distribution of vinyl groups in polystyrene/poly(styrene-divinylbenzene) (PS/P(S-DVB)) composite microspheres produced by seeded copolymerization of S and DVB in the presence of 2.1-μm monodisperse PS seed particles was estimated from the amount detected with bromine titration method as a function of the reaction time under various conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00654120
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation of micron-size monodisperse polymer microspheres having cationic groups (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 733-737 
    Details
    ISSN: 1435-1536
    Keywords: Polymeremulsion ; microsphere ; chloromethylgroup ; polyamine ; cationicgroup ; dispersionpolymerization ; seededpolymerization
    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 Micron-size monodisperse crosslinked polymer microspheres having chloromethyl groups were prepared by seeded copolymerization of styrene, divinylbenzene, and chloromethylstyrene in the presence of 2.1-μ monodisperse polystyrene seed particles produced by dispersion polymerization. The modification reaction of chloromethyl groups on the surfaces with polyamines such as triethylenetetramine and ethylenediamine was carried out. From the measurements of ξ potential and the amount of chloride ion released, the introduction of a large number of cationic groups at the surfaces was confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00776143
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Fundamental characteristics of human limb electrical impedance for biodynamic analysis (1992)
    Springer
    Medical & biological engineering & computing 30 (1992), S. 465-472 
    Details
    ISSN: 1741-0444
    Keywords: Biodynamic analysis ; Bioelectrical impedance ; Sports skill
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract The paper describes the use of human-limb impedance for biodynamic analysis. The change of human-limb impedance during movement was measured, and was found to be related to kinematic and kinetic parameters. Strong relationships were found between the velocity of change of the forearm impedance and the angular velocity of the elbow joint (correlation coefficient r=−0·97), between the change of foream impedance and the acceleration of a human limb (r=0·86), and between the change of forearm impedance and the velocity of a human limb (r=0·79). A change of upper-limb impedance was caused by a change in a sectional area of muscular tissue in the measured part and a change of blood volume during movement of an upper limb. In tennis, there was a strong relationship between a change of forearm impedance and ball velocity (r=0·87). Impedance waveforms were useful for analysis of the movement pattern and the stability of movement in tennis. This method has the following characteristics: (a) it does not have a spatial and temporal limitation for measurement; (b) the subject is scarcely restricted in movement; (c) the data processing can be handled easily and quickly; (d) impedance waveforms inherently show magnitude, form and stability of movement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457823
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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