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  • Key words Scanning force microscopy  (1)
  • PACS. 34.80.Lx Electron-ion recombination and electron attachment – 29.20.Dh Storage rings  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Elasticity of normal and cancerous human bladder cells studied by scanning force microscopy (1999)
    Springer
    European biophysics journal 28 (1999), S. 312-316 
    Details
    ISSN: 1432-1017
    Keywords: Key words Scanning force microscopy ; Cytoskeleton elasticity ; Normal and cancerous cells
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Scanning force microscopy was used for the determination of the elastic properties of living cells in their culture conditions. The studies were carried out on human epithelial cells. Two similar lines of normal cells (Hu609 and HCV29) and three cancerous ones (Hu456, T24, BC3726) were measured using the scanning force microscope in order to collect the force versus indentation curves. The BC3726 line originates from the HCV29 cell line which was transformed by the v-ras oncogene. To evaluate their elastic properties, Young's modulus values were determined. The present study has shown that normal cells have a Young's modulus of about one order of magnitude higher than cancerous ones. Such a change might be attributed to a difference in the organisation of cell cytoskeletons and requires further studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002490050213
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  • 2
    Electronic Resource
    Electronic Resource
    Recombination of U 92 + ions with electrons (2001)
    Springer
    The European physical journal 15 (2001), S. 145-154 
    Details
    ISSN: 1434-6079
    Keywords: PACS. 34.80.Lx Electron-ion recombination and electron attachment – 29.20.Dh Storage rings
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: Recombination of fully stripped U92+ ions with electrons has been investigated at the Experimental Storage Ring (ESR) in Darmstadt. Absolute recombination rate coefficients have been measured for relative energies from 0 to 33 eV. For energies greater than 20 meV the experimental result is well described by the theory for radiative recombination (RR). Below 20 meV the experimental rate increasingly exceeds the RR calculation as observed previously in the recombination of light bare ions as well as of Bi83+. This low-energy rate enhancement is shown to scale as Z2.6 for bare ions, where Z is the atomic number of the ion. The U92+ recombination rate enhancement is insensitive to changes of the electron density. Variation of the magnetic guiding field strength from 80 mT to 120 mT resulted in oscillations of the recombination rate at 0 eV. The oscillations are partly attributed to changes of the transverse electron temperature accompanying the change of the magnetic guiding field strength; partly they may be caused by uncompensated small changes of the interaction angle between the two beams.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100530170160
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    Paper (German National Licenses)
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