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91.
Mathematische Zeitschrift - 相似文献
92.
A mathematical model for the EEG is presented here based on physical and anatomical characteristics of the brain. The important finding is that the system is characterised by a diffusion equation whose general solution represents a Fourier series expansion for the EEG at any point of the zone under consideration. 相似文献
93.
The decay of 48K has been studied for the first time. This activity was produced by means of the 48Ca(n,p) reaction with 14 MeV neutrons. A group of five levels in 48Ca near 7 MeV accounts for ∽ 75% of the 48K β-decay strength. 相似文献
94.
W.K. Dagenhart P.H. Stelson F.K. Mcgowan R.L. Robinson W.T. Milner S. Raman W.K. Tuttle 《Nuclear Physics A》1977,284(3):484-500
Coulomb excitation of the nucleus 115Sn was studied with beams of 4He and 16O. Level energies, spins, mean-lives and B(E2) and B(M1) transition probabilities were obtained. Spin + states were observed at 497.35 and 1280.08 keV and spin + states were observed at 986.54 and 1416.78 keV. A state of 612.79 keV was observed to be indirectly excited by decay of the Coulomb excited states. Eleven B(E2) values and nine B(M1) values were obtained for the transitions between the low-lying states. In contrast to previous particle transfer results which suggested a clear distinction between shell-model and collective + and + states, our results suggest the collective strength is shared by the two + and two + states. 相似文献
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Frequencies of free vibration of rectangular plates of arbitrary thickness, with different support conditions, are calculated by using the Method of Initial Functions (MIF), proposed by Vlasov. Sixth and fourth order MIF theories are used for the solution. Numerical results are presented for three square plates for three thickness ratios. The support conditions considered are (i) three sides simply supported and one side clamped, (ii) two opposite sides simply supported and the other two sides clamped and (iii) all sides clamped. It is found that the results produced by the MIF method are in fair agreement with those obtained by using other methods. The classical theory gives overestimates of the frequencies and the departures from the MIF results increase for higher modes and larger thickness ratios. 相似文献