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991.
Summary Relationships derived from the thermodynamic formulation of TLC with a binary mobile phase are discussed. The adsorption equilibrium
constant is determined from the linear form of a basic equation considering the adsorption process. This linear relationship
is examined with help of TLC data obtained by using six different chromatographic systems. The adsorption equilibrium constant
obtained from the TLC data is compared to the equilibrium constant determined from adsorption measurements.
Presented at the 15th International Symposium on Chromatography, Nürnberg, October 1984 相似文献
992.
J. Migdałek R. Marcinek 《Journal of Quantitative Spectroscopy & Radiative Transfer》1984,32(4):269-277
The 4fn6s2?4fn6s6p transitions are studied for neutral samarium, europium, dysprosium, erbium, and ytterbium. Four different couplings between the valence electrons and the 4fn shell are considered, three are based on the LS and one on the JIJII scheme. The radial integrals are computed with the model-potential method, which includes both exchange and core polarization. The results are compared with those obtained by employing the Coulomb approximation and the ab initio Hartree + Exchange (HX) approach, as well as with available experimental data. The core-polarization influence on oscillator strengths for these transitions is also investigated. 相似文献
993.
Jan J. Sławianowski 《International Journal of Theoretical Physics》1975,12(4):271-296
The mechanics of an affinely-rigid body is investigated on both the classical and the quantum level. An affinely-rigid body is defined as a system of material points or a continuous medium in which all affine relations are frozen. Our treatment is based on the general theory of systems with closed teleparallelisms, presented in Section 2 of this paper. 相似文献
994.
Osmotic coefficients measured by vapour pressure osmometry are reported for benzene solutions of complexes of pyridine with trifluoroacetic, dichloroacetic and chloroacetic acids at 25°C. Solute activities decrease with increasing concentration due to formation of self-associates. It is suggested that dipole-dipole interactions contribute substantially to the stability of the associates. 相似文献
995.
996.
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998.
Roman Słowinski 《European Journal of Operational Research》1981,7(3):265-273
The paper deals with the allocation of different categories of resources in a network project under multiple conflicting criteria including project duration or maximum lateness, and several cost criteria. The resource requirements of the splittable activities are assumed to be discrete, i.e., assuming arbitrary values from given finite sets for particular resource types and categories. Two approaches for solving the problem, using multiobjective linear programming in specific ways, are described. Reduction of the number of activity preemptions, as a secondary project performance measure, is considered. 相似文献
999.
Bronisław Kuchowicz 《General Relativity and Gravitation》1974,5(2):201-234
The three subsequent levels of approach to the problem of the neutrino in general relativity which have been exploited till now, are:
- ‘classical particle’ approach, i.e. a study on the neutrino as a classical particle in a classical, given gravitational field;
- ‘quantum particle’ approach, i.e. considering the Dirac equation for the neutrino in a given gravitational field;
- ‘classical field’ approach comprising the study of combined neutrino-gravitational fields.
1000.