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81.
Henryk Minc 《Linear and Multilinear Algebra》1984,15(3):225-243
A study of properties of matrices with minimum permanent in a face of the polyhedron of doubly stochastic n × n matrices. The minima are determined for certain faces. 相似文献
82.
We measured the wavelength-dependent intensity decays of 4,9-dihydro-4,6-dimethyl-9-oxo-1H-imidazo-1,2a-purine (Yt-base) in propanol to determine the time-resolved emission spectra and rates of spectral relaxation. We found that resolution of the spectral relaxation times was dramatically improved by global analysis of the frequency-domain data with increasing amounts of the collisional quencher CCl4. Collisional quenching preferentially decreases the longer-lived relaxed component of the emission, thereby increasing the fractional contribution of the incompletely relaxed portion of the emission. The data could not be explained by a single spectral relaxation time, and at least two relaxation times are needed to describe the time-dependent emission center of gravity of Yt-base.Dedicated to Professor Stefan Paszyc on the occasion of his 70th birthday. 相似文献
83.
Yunan Cui Henryk Hudzik Hongwei Zhu 《Proceedings of the American Mathematical Society》1998,126(1):115-121
Maluta's coefficient of Musielak-Orlicz sequence spaces equipped with the Orlicz norm is calculated. A sufficient condition for the Schur property of these spaces is given.
84.
Photolysis of barbital yields derivatives of urea and biuret. The mechanism of ring opening involves an isocyanate intermediate. 相似文献
85.
A relation between the enthalpy of formation and the rate of change with normal coordinate of the dipole moment contribution due to the charge-transfer phenomenon is derived for electron donor-acceptor complexes formed between halogen and organic molecules. The relation is found to hold for a number of iodine complexes. 相似文献
86.
87.
88.
Marek Ilczyszyn Zdzisaw Latajka Henryk Ratajczak 《Magnetic resonance in chemistry : MRC》1980,13(2):132-136
The 13C chemical shifts of twenty chloro- and nitro-substituted phenols have been measured in d-chloroform. The influence of substituents on the screening at C-1, on the total charge at this position and on the dipole moments is reported and analysed. The results of this study suggest that variations of the chemical shifts at C-1 for meta-methyl-, meta-chloro-, meta-nitro-, ortho- and para-methyl-, ortho- and para-chlorosubstituents mainly reflect charge density changes. The influence of ortho-nitro groups on the screening of C-1 is more complex. 相似文献
89.
90.
Henryk Gzyl 《Journal of statistical physics》1982,28(1):165-171
In this paper we obtain a probabilistic representation of the solutions of a linearized Boltzmann equation. By making use of dual Markov processes we extend Pinsky's results to the case where there is a gradient force field present. 相似文献