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  • 1
    Electronic Resource
    Electronic Resource
    Optical force microscopy with silicone rubber waveguides (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 22-24 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A simple technique is described for optically imaging the lateral distribution of normal forces exerted onto a flat surface. It is based on the detuning of a silicone rubber planar waveguide by the forces to be investigated. The method is demonstrated by imaging the contact line force of a sessile water droplet on the surface, with a force resolution better than μN. It is shown that the lateral resolution may be much better than the decay length of the waveguide modes used. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.119292
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Improved metabolic action of a bacterial lysine decarboxylase gene in tobacco hairy root cultures by its fusion to arbcS transit peptide coding sequence (1996)
    Springer
    Transgenic research 5 (1996), S. 193-201 
    Details
    ISSN: 1573-9368
    Keywords: Nicotiana tabacum ; transformed root cultures ; metabolic engineering ; lysine decarboxylase ; protein targeting ; Rubisco transit peptide ; anabasine ; cadaverine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The gene of a bacterial lysine decarboxylase (ldc) fused to arbcS transit peptide coding sequence (tp), and under the control of the CaMV 35S promoter, was expressed in hairy root cultures ofNicotiana tabacum. The fusion of theldc to the targeting signal sequence improved the performance of the bacterial gene in the plant cells in many respects. Nearly all transgenic hairy root cultures harbouring the35S-tp-ldc gene contained distinctly higher lysine decarboxylase activity (from 1.5 to 30 pkat LDC per mg protein) than those which had been transformed with constructs in which the gene had been directly cloned behind the CaMV 35S promoter. The higher enzyme activity led to the accumulation of up to 0.7% cadaverine on a dry mass basis. In addition, part of the cadaverine pool was used for increased biosynthesis of anabasine, an alkaloid which was hardly detectable in control cultures. The best line contained anabasine levels of 0.5% dry mass, which could further be enhanced by feeding of lysine.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01969709
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Quantum fluids on alkali metal surfaces (1995)
    Springer
    Journal of low temperature physics 101 (1995), S. 211-216 
    Details
    ISSN: 1573-7357
    Keywords: 05.70 Ln ; 05.70 Jk ; 64
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The behaviour of quantum fluid films on alkali metal surfaces is investigated. Using the quartz microbalance technique, the wetting phase diagram can be explored by adsorption isotherm measurements. Optically excited surface plasmons are used to obtain real-time images of the dynamical behaviour of4He droplets on cesiated surfaces.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00754578
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    Paper (German National Licenses)
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