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  • Artikel: DFG Deutsche Nationallizenzen  (5)
  • 33  (2)
  • AMS Subject Classifications: 76E05, 65N25, 65N35.  (1)
  • Chemistry  (1)
  • DBA/2 mice  (1)
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  • Artikel: DFG Deutsche Nationallizenzen  (5)
Materialart
Erscheinungszeitraum
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  • 1
    Digitale Medien
    Digitale Medien
    Multiphoton absorption of broad-band CO2 laser radiation by SF6 (1984)
    Springer
    Applied physics 35 (1984), S. 1-5 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 82.50 ; 33 ; 35
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00697513
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): 82.50 ; 33 ; 35
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00693876
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  • 3
    Digitale Medien
    Digitale Medien
    Spectral Galerkin Discretization for Hydrodynamic Stability Problems (2000)
    Springer
    Computing 65 (2000), S. 97-118 
    Details
    ISSN: 1436-5057
    Schlagwort(e): AMS Subject Classifications: 76E05, 65N25, 65N35. ; Key Words: Orr-Sommerfeld equation, hydrodynamic stability, eigenvalue problem, spectral method.
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik
    Notizen: Abstract A spectral Galerkin discretization for calculating the eigenvalues of the Orr-Sommerfeld equation is presented. The matrices of the resulting generalized eigenvalue problem are sparse. A convergence analysis of the method is presented which indicates that a) no spurious eigenvalues occur and b) reliable results can only be expected under the assumption of scale resolution, i.e., that Re/p 2 is small; here Re is the Reynolds number and p is the spectral order. Numerical experiments support that the assumption of scale resolution is necessary in order to obtain reliable results. Exponential convergence of the method is shown theoretically and observed numerically.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s006070070014
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  • 4
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): [3H]QNB ; [3H]pirenzepine ; autoradiography ; C57BL/6 mice ; DBA/2 mice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00967281
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  • 5
    Digitale Medien
    Digitale Medien
    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
    Schlagwort(e): 59Co NMR ; Six-coordinate complexes ; Porphyrin complexes ; Substituent effects ; Solvent effects ; Chemistry ; Analytical Chemistry and Spectroscopy
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: 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.
    Zusätzliches Material: 10 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/mrc.1260271204
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