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  • 1
    Electronic Resource
    Electronic Resource
    Chloroplast dielectrophoresis (1987)
    Springer
    European biophysics journal 14 (1987), S. 253-256 
    Details
    ISSN: 1432-1017
    Keywords: Chloroplasts ; dielectrophoresis ; surface charge
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Dielectrophoretic coefficients of chloroplasts, untreated and treated with cationized ferritin, have been measured in axisymmetric ac electric fields at different frequencies. The treated chloroplasts have surface charge density 2.4 times smaller than the untreated ones. The dielectrophoretic coefficients are in the range 10-25 F · m2 to 7x10-25 F · m2 for frequencies from 6,000 Hz to 1 MHz. Dielectrophoretic effects have not been observed for frequencies from 1 to 6,000 Hz and from 1 MHz and 10 MHz. The surface charge decrease leads to an increase of 2–3 times in the dielectrophoretic coefficients and slight shift of the dielectrophoretic mobility of lower frequencies. These results may be qualitatively explained on the basis of the existing theories for cell and vesicle dielectrophoresis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256358
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  • 2
    Electronic Resource
    Electronic Resource
    Zur Herstellung von ionenaustauschenden Polycaproamidfasern. Teil I. Anilinformaldehydharz enthaltende Polycaproamidfasern (1982)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 33 (1982), S. 31-33 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: A new method for preparing ion-exchanging polycaproamide fibres, based on the synthesis of aniline-formaldehyde resins within the bulk of fibres, has been established. The effect of various factors on the process of synthesis was investigated. Under optimum conditions, ion-exchanging polycaproamide fibres having an exchange capacity of 2.71 mgequ/g to 0.1 N HCl were obtained.
    Notes: Ein neues Verfahren zur Herstellung ionenaustauschender Polycaproamidfasern, das auf der Synthese von Anilinformaldehydharz in der Fasermasse beruht, wurde entwickelt. Der Einfluß verschiedener Faktoren auf den Verlauf der Synthesereaktion wurde untersucht. Unter optimalen Bedingungen wurden ionenaustauschende Polycaproamidfasern mit einer Austauschkapazität von 2,71 mgäqu./g gegenüber 0,1 n HCl erhalten.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1982.010330106
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