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61.
Heribert Offermanns 《Nachrichten aus der Chemie》2013,61(2):123-126
62.
Stewart F. Parker Keith Refson Susan M. Tavender Peter Albers Bernd Hannebauer Matthias Janik Arndt Müller Jürgen Martens Martin Watzke Kenneth Shankland Charlotte Leech Heribert Offermanns 《Journal of Raman spectroscopy : JRS》2009,40(6):703-708
The product of the Asinger reaction between elemental sulfur, n‐butylamine and acetophenone is 8‐(n‐butylaminophenylmethyliden)‐1,2,3,4,5,6,7‐heptathiocane which contains a CS7 ring. A combination of infrared, Raman and inelastic neutron scattering spectroscopies with periodic density functional theory calculations is used to provide a complete assignment of the vibrational spectra of this unusual species. The similarity between the Raman spectra of the compound and that of elemental sulfur is particularly striking. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
63.
We study the Dirac operator D
0 in an external potential V, coupled to a quantized radiation field with energy H
f and vector potential A. Our result is a Chernoff-type theorem, i.e., we prove, for the operator D
0+α · A+V +λ H
f with λ ∈{0, 1}, that the essential self-adjointness is not affected by the behavior of V at ∞.
相似文献
64.
In recent years, inverse analysis has become a common approach to typical engineering problems such as model identification. In this contribution, the inverse problem is discussed in light of taking experimental uncertainties into account. This involves in particular the propagation of experimental errors and the analysis of the sensitivity of the model response to variations in the model parameters to be determined. The method is applied to an elasto-viscoplastic material model which is used in the context of electromagnetic high-speed forming. (© 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) 相似文献
65.
66.
By the reaction of AuI with alkali metal hydrogen acetylides MIC2H (MI = Li–Cs) in liquid ammonia and subsequent heating of the remaining residue in refluxing pyridine (MI = Li, Na, K) or as a solid phase at about 110 °C in vacuum (MI = Rb, Cs) ternary alkali metal gold acetylides MIAuC2 were obtained. Their crystal structures were investigated by the means of X‐ray powder diffraction. [Au(C2)2/2–] chains are the characteristic structural motif which are packed in a hexagonal (LiAgC2) and tetragonal arrangement (NaAuC2–CsAuC2), respectively. Simple calculations based on the close packing of rods and spheres can explain these different arrangements. The existence of C–C triple bonds in the title compounds is confirmed by Raman spectroscopic investigations. 相似文献
67.
Docentka Dr. Ludmila Eckertová Dozent Dr. Heribert Jahrreiss 《Zeitschrift für Physik A Hadrons and Nuclei》1968,211(1):89-106
The origin and the behaviour of surface charges on the inner walls of differently sized diodes has been investigated by the authors previously. Now, a quantitative treatment is given for the time dependence of the anode current as well as of the potential of an electrode on the outside of the diodes which is characteristic for this method of investigation. The comparison between the results of the calculations and the experimental data shows the models to be adequate on which the calculations are based. 相似文献
68.
Klaus G. Heumann und Heribert Seewald 《Fresenius' Journal of Analytical Chemistry》1987,329(4):485-486
Ohne Zusammenfassung
Simultaneous determination of boron, chloride, bromide, and iodide in water samples by isotope dilution mass spectrometry相似文献
69.
70.
We develop a new path integral formulation of QCD in radial and axial gauges. This formalism yields free propagators which are free of gauge poles. We find that radial gauges are ghost free. In axial gauges ghosts cannot generally be excluded from the formalism due to the need to fix the residual gauge freedom. 相似文献