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  • Articles: DFG German National Licenses  (5)
  • 33  (2)
  • 73K10  (1)
  • Chemistry  (1)
  • DBA/2 mice  (1)
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  • Articles: DFG German National Licenses  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Multiphoton absorption of broad-band CO2 laser radiation by SF6 (1984)
    Springer
    Applied physics 35 (1984), S. 1-5 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33 ; 35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Increase of the emission bandwidth of a high-pressure CO2 laser up to 1.5 cm−1 increases the multiphoton absorption cross-section of SF6. Comparison with the previously found [9] increased absorption for shorter pulses suggests that this is also a bandwidth effect. Spectral structures as narrow as 1 cm−1 above the 10th absorption step are invoked to explain the observations. The temperature effect, which disappears in the broad-band case, confirms this view.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00697513
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Improved separation of the rare sulfur isotopes by infrared multiphoton dissociation of SF6 (1987)
    Springer
    Applied physics 42 (1987), S. 147-153 
    Details
    ISSN: 1432-0649
    Keywords: 82.50 ; 33 ; 35
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The dissociation probabilities of32SF6 and some of34SF6 have been measured at a large number of CO2 laser lines both at room temperature and at 140 K. The longwavelength wing of this dissociation spectrum is exponential in the wavenumber. Its logarithmic slope is proportional to the inverse temperature. Selectivities are high enough at 140 K, that the photons are consumed only for the rare isotope in the case of34SF6 and nearly so for36SF6. For33SF6 further improvement of the selectivity would be desirable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00693876
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Autoradiography of muscarinic cholinergic receptors in cortical and subcortical brain regions of C57BL/6 and DBA/2 mice (1992)
    Springer
    Neurochemical research 17 (1992), S. 1057-1062 
    Details
    ISSN: 1573-6903
    Keywords: [3H]QNB ; [3H]pirenzepine ; autoradiography ; C57BL/6 mice ; DBA/2 mice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Mice of the inbred strains C57BL/6 and DBA/2 show strain-dependent behavioural differences which have been correlated with variations in brain cholinergic systems. In the present study, the density of muscarinic cholinergic receptors in both strains of mice was determined by autoradiographic methods using [3H]quinuclidinyl benzilate (QNB) and [3H]pirenzepine as ligands. C57BL/6 mice showed a significantly lower [3H]QNB binding level in the frontal cortex by one third as compared to DBA/2 mice. In the striatum and the cholinergic pontomesencephalic nucleus laterodorsalis tegmenti the [3H]QNB binding was lower in C57BL/6 by 28% and 31%, respectively. The [3H]pirenzepine binding level was found to be significantly higher in C57BL/6 temporal cortex (by 22%). These results are discussed in relation to interstrain differences in cholinergic cell density and in the activity of cholinergic enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00967281
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Boundary layers of hierarchical beam and plate models (1995)
    Springer
    Journal of elasticity 38 (1995), S. 1-40 
    Details
    ISSN: 1573-2681
    Keywords: 73K10 ; 35B25
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The boundary behavior of a family of hierarchical models of linearly elastic, isotropic plates is studied. The hierarchical models are obtained by spectral semidiscretization of the displacement fields in the transverse direction and strain energy projection. The well known Reissner-Mindlin model is contained in the hierarchy as a special case. A decomposition of the boundary layers of any model in the hierarchy into a bending and a torsion layer, both of which are model dependent, is given. It is shown further that the bending and torsion layers arise as Galerkin approximations of certain (nonlinear) eigenvalue problems in the plate cross section with the subspaces used to derive the hierarchical model. It is shown that the bending layers converge, as the order of the plate model tends to infinity, to the so-called Papkovich functions on an elastic strip. The regularity of the solution on polygonal plates is investigated for the whole hierarchy of plate models and shown to equal the regularity of the plane elasticity problem.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00121462
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    59Co NMR of cobalt(III) porphyrin complexes. III.For Parts I and II, see Refs 1 and 2. Data base on substituent and solvent effects (1989)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 27 (1989), S. 1117-1129 
    Details
    ISSN: 0749-1581
    Keywords: 59Co NMR ; Six-coordinate complexes ; Porphyrin complexes ; Substituent effects ; Solvent effects ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A broad study of the 59Co NMR of cobalt(III) porphyrin complexes with axial amine ligands in a variety of solvents is reported. The data are presented in tabular form, as are the numerical correlations of chemical shift, δ, and line width, ω1/2, using the Kamlet-Taft equation. The dependence of δ and ω1/2 on ligand substituents is discussed. Solvent data, including mixed solvent results, indicate that general factors such as acidity, basicity, polarity and hydrogen-bonding capability are important, as are the specific nature of the functional groups on the ligands and the solvent.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260271204
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    Paper (German National Licenses)
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