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81.
82.
Y. Takamura S. Nakagawa K. Suzuki K. Takahashi H. Asano G. Sugihara M. Ueno 《Colloids and surfaces. B, Biointerfaces》1996,7(5-6):239-247
The behavior of sodium glycochenodeoxycholate (NaGCDC) and sodium glycoursodeoxycholate (NaGUDC) in binary mixed micelles consisting of bile salt and octaoxyethylene glycol mono n-decyl ether (C10E8) has been studied on the basis of micellar compositions, polarities of the interior of intramicelles, mean aggregation numbers and 1H NMR measurements. Micellar compositions for both NaGCDC---C10E8 and NaGUDC---C10E8 systems showed a tendency to change from C10E8-rich micelles to bile-salt-rich micelles with an increase on the mole fraction of bile salts from the results of both theoretical calculations using the critical micelle concentration and the micellar polarity. The microenvironment of intramicelles for the NaGCDC---C10E8 system was found to be more hydrophobic than that for the NaGUDC---C10E8 system. Mean aggregation numbers of mixed micelles for both systems decreased abruptly with an increase in the mole fraction of bile salts in the range of low mole fraction, but those for NaGCDC were larger than those for NaGUDC. Furthermore, from the results of 1H NMR measurements, the motions of the methyl group protons in the 18 position of the molecular structure of NaGCDC were slightly restricted with an increase in the mole fraction of NaGCDC. In contrast, the methyl group protons in the 18 and 19 positions of the molecular structure of NaGUDC became freer with an increase in the mole fraction of NaGUDC. 相似文献
83.
84.
Emission spectra of MgS, CaO, CaS, CaSe and SrS phosphors activated with a Pb2+ or a Bi3+ ion are measured at 4.2 K. By the analysis of the phonon structure of the 3A1u → 1A1g emission band, it is found that the hyperfine interaction provokes the zero-phonon line on the emission band for the alkaline-earth chalcogenide phosphors activated with a Pb2+ or a Bi3+ ion. 相似文献
85.
In molten LiCl+KCl eutectic at 450°C, current and differential capacity were measured with the potentiodynamic method at Sb-doped polycrystalline tin oxide films prepared on Pyrex glass substrates. SnO2 electrodes usable in high temperature melts were constructed with special care to keep a definite working area. The melt-stable and semiconductive oxide shows a stable polarizable potential region with a span of about 1 V from chlorine evolution to cathodic decomposition of the oxide. Small residual current in the polarizable region indicates a possibility to use the oxide as an indicator electrode in the melt. The interfacial capacity is assigned to the space charge capacity of the electrode side and its potential dependence is explained using the Mott-Schottky equation. A linear Mott-Schottky plot was obtained after several potential scans and the flat band potential was estimated as ?1.29 V vs. 1 M Pt-(II)/Pt. The oxide surface in contact with the melt is subject to change during scanning in order to establish a stable melt-oxide interface where the specific adsorption of Cl? ions plays an important role for the stabilization. 相似文献
86.
Y. Asano E. Kikutani S. Kurokawa T. Miyachi M. Miyajima Y. Nagashima T. Shinkawa S. Sugimoto Y. Yoshimura 《Physics letters. [Part B]》1982,113(2):195-198
A search for K+ → π+γ, π+γγ, π+γγγ was made detecting pions from stopped kaons in the kinetic energy region between 117 MeV and 127 MeV. New Limits of 1.4 ×10?6, 8.4 × 10?6 and 1.0 × 10?4 for the branching ratio were obtained assuming a phase-space spectrum on the pion energy. The first limit also aplies to another process K+ → π+ + a, where a is a light meson with mass smaller than 100 MeV/c2 and decays into nγ's with lifetime less than 10?9 s. 相似文献
87.
Resonance fluorescence spectra are excited from a single crystal of curopium doped yttrium aluminum garnet. An analysis from the energy spectrum shows that the spectra are due to trivalent europuim ions occupying two different sites in the unit cell and a crystal field analysis reveals that these ions at these sites experience fields of orthorhombic and axial symmetry. The former is that expected if Eu3+ replaces the Y3+ at the orthorhombic d sites, the latter if the lanthanide ion replaces the Al3+ ions at the a sites (with a distorted C3i symmetry), there are indications that Eu3+ prefers the a over the d sites. 相似文献
88.
89.
This Letter theoretically discusses quasiparticle states and nuclear spin relaxation rates T1-1 in the quasi-one-dimensional superconductor (TMTSF)2PF6 under a magnetic field applied parallel to the conduction chains. We study the effects of Josephson-type vortices on T1(-1) by solving the Bogoliubov-de Gennes equation for p-, d- or f-wave pairing interactions. In the presence of line nodes in pairing functions, T1(-1) is proportional to T in sufficiently low temperatures because quasiparticles induced by vortices at the Fermi energy relax spins. We also try to identify the pairing symmetry of (TMTSF)2PF6. 相似文献
90.
Kenji Asano Akio Miyao Hirohiko Hirochika Hidemi Kitano Makoto Matsuoka Motoyuki Ashikari 《Proceedings of the Japan Academy. Series B, Physical and biological sciences》2010,86(3):265-273
Plant height is one of the most important traits in crop improvement. Therefore revealing the mechanism of plant elongation and controlling plant height in accordance with breeding object is important. In this study we analyzed a novel dwarf mutant, ssd1, of which phenotype is different from typical GA- or BR-related dwarf phenotype. ssd1 exhibits pleiotropic defects in elongation of various organs such as stems, roots, leaves, and flowers. ssd1 also shows abnormal cell files and shapes, which suggests defects of normal cell division in the mutant. Map-based cloning and complementation test demonstrated that the dwarf phenotype in ssd1 mutant was caused by insertion of retrotransposon in a gene, which encodes plant-specific protein with unknown biochemical function. A BLAST search revealed that SSD1-like genes exist in diverse plant species, including monocots and dicots, but not fern and moss. Our results demonstrate that SSD1 controls plant elongation by controlling cell division in higher plants. 相似文献