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931.
We present a model of subquark pregeometry in which the Higgs scalar as well as the space-time metric appears as a composite of subquark-antisubquark pairs. The effective langrangian becomes the einstein one with no cosmological term when conformal invariance is broken spontaneously. 相似文献
932.
933.
934.
Keiichi Suto Shinichi Kakinuma Yuji Ito Kazuhiko Sagara Hideki Iwasaki Hideji Itokawa 《Journal of chromatography. A》1998,810(1-2):252-255
Atractylon was extracted from Atractylodes rhizome within 15 s with supercritical carbon dioxide. The extraction was so rapid that SFE extracts could be transported directly into an SFC column and analyzed. Atractylon was eluted and separated in ca. 5 min. Analyte recovery was 30% higher than when using solvent extraction. Determination of atractylon in Atractylodes rhizome was achieved with only a few mg of crude drug sample. Atractylon is unstable due to oxidation and is easily transformed to atractylenolides. Loss of analytes during the procedures was also minimal with this on-line SFE–SFC system. 相似文献
935.
936.
937.
C. B. Moon T. Komatsubara T. Shizuma K. Uchiyama N. Hashimoto M. Katoh K. Matsuura M. Murasaki Y. Sasaki H. Takahashi Y. Tokita K. Furuno 《Zeitschrift für Physik A Hadrons and Nuclei》1997,358(4):373-374
High-spin states of the even-even 116Te were studied by in-beam g-ray spectroscopy using the 103Rh (16O, p2n) fusion-evaporation reaction at a beam energy of 80 MeV. γ-γ coincidence and γ-γ angular correlation analyses were employed for determining the level scheme of 116Te. Levels up to Iπ = 27? and several new states were established. We identified two rotational bands with negative parity, one of which was newly established in the present work. We suggest that such two bands be associated with two proton [(g7/2) ? (h11/2)] and two neutron [(d5/2) ? (h11/2)] configurations, respectively. 相似文献
938.
Nonadecathymidylic acid was synthesized by the block coupling phosphotriester approach on a polymer support. 相似文献
939.
940.
The dynamic susceptibility is studied for the ferromagnetic state of MnAs on the basis of the itinerant electron theory. The spin waves exist throughout the entire Brillouin zone and the existence of an optical spin-wave branch is predicted. 相似文献