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991.
992.
993.
Kaoru Yokoya Akira Shimizu Hiroshi Kato Kichiro Hiida 《General Relativity and Gravitation》1978,9(3):227-241
The electrostatic potential in a gravitational field is estimated up to the order ofe
2
G
2 in the framework of the conventional quantum field theory. It is shown that the electrostatic potential is different from the classical one. We find that this discrepancy is attributable to the process in which a particle emits three massless ones which are absorbed by three other particles. 相似文献
994.
995.
Pyrimido[5,4-]pteridine -oxide (1) oxidizes efficiently benzene, toluene, and anisole under UV irradiation to give the corresponding phenol derivatives 4, though the easiness of the reaction significantly depends upon the nature of the substituents on the benzene ring. 相似文献
996.
Kaoru Yamanouchi Takahiro Matsuzawa Kozo Kuchitsu Yoshiaki Hamada Masamichi Tsuboi 《Journal of Molecular Structure》1985
The quadratic force constants of the five possible conformers of allylamine were calculated by an ab initio MC method. The infrared spectra of this molecule in the gas phase were remeasured and analyzed on the basis of the calculated vibrational frequencies. A potential energy surface with respect to the skeletal torsions was also calculated. The relative abundances of the S+G+, ST, CT, CG, and S+G? conformers, predicted to be 44:32:16:7:1 at room temperature, are consistent with the experimental data. 相似文献
997.
998.
Takashi Nagata Mutsumi Suzuki Kaoru Suzuki Tamotsu Kondow Kozo Kuchitsu 《Chemical physics》1984,88(1):163-170
Unequal intensities of the Λ-doublet components were observed in the CH(A2Δ-X2Π) emission following the multiphoton dissociation of (CH3)2CO, (CH3)2S and CH3NO2 by an ArF laser (193 nm). The power dependence of the emission intensity was estimated to be cubic (3.1±0.2) when the laser power was below ≈ 8×1017 photons cm?2 pulse?1. The Λ-doublet populations depended on the rotational quantum number N′ and the preferred level changed at N′ = 20. A similar behavior was observed for the CD(A2Δ) from (CD3)2CO. Rotational distributions show bimodal behavior, having a hump around N′ = 13 in CH(A2Δ) and N′ = 11 in CD(A2Δ). These trends indicate that the CH(A2Δ) is produced through multiple processes where stepwise mechanisms are operative via either CH2 or CH3, or both radicals as intermediates. 相似文献
999.
The function of a hologram computer-aided design tool which the authors have developed are extended to handle both designing and analyzing holograms illuminated by a two or three-dimensional white-light image. The ability to search for an optimum image plane is also now possible. HOE lenses illuminated by multiple point-sources and by a point-source with a certain spectral bandwidth are designed and analyzed using the extended functions. Accuracy and usefulness of the functions are demonstrated from the results of the design and analysis. 相似文献
1000.
The infrared absorption of poly(ethylene glycol) was measured in the molten state. Characteristic bands of the molten state were identified. Normal vibrations and frequency distributions were treated for various conformation models with CH2CH2O repeat units. The infrared absorption peaks of the molten state closely correspond to the frequency distribution peaks of the TGT conformation with gauche O? CH2? CH2? O groups, although infrared bands due to trans O? CH2? CH2? O groups are also observed. Vibrational assignments of the infrared bands and Raman lines were made on the basis of potential energy distributions. 相似文献