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71.
Nakamura E Yamanaka M Yoshikai N Mori S 《Angewandte Chemie (International ed. in English)》2001,40(10):1935-1938
72.
A time-dependent coupled channel (TDCC) method has been developed to study rearrangement reactions in few-body Coulomb systems. We apply the TDCC method to muon transfer in muonic deuterium and triton collisions. The muon-transfer cross section (S-wave) is calculated for triton energies of 100 eV–3 keV. The present result is in good agreement with the previous calculation with the coupled rearrangement channel method [Hyp. Interact. 82 (1993), 45]. We also illustrate time evolution of wave functions to understand qualitatively the muon-transfer reaction. 相似文献
73.
Fujiwara M Akimune H van Den Berg AM Cribier M Daito I Ejiri H Fujimura H Fujita Y Goodman CD Hara K Harakeh MN Ihara F Ishikawa T Janecke J Kawabata T Raghavan RS Schwarz K Tanaka M Yamanaka T Yosoi M Zegers RG 《Physical review letters》2000,85(21):4442-4445
Discrete Gamow-Teller (GT) transitions 176Yb-->176Lu at low excitation energies have been measured via the ( 3He,t) reaction at 450 MeV and at 0 degrees. For 176Yb, two low-lying states are observed, setting low thresholds Q(nu) = 301 and 445 keV for neutrino ( nu) capture. Capture rates estimated from the measured GT strengths, the simple two-state excitation structure, and the low Q(nu) in Yb-Lu indicate that Yb-based nu detectors are well suited for a direct measurement of the sub-MeV solar electron-neutrino ( nu(e)) spectrum including pp neutrinos. 相似文献
74.
We have developed an ultrasonic micro-motor for use as a micro-actuator in place of an electromagnetic motor. This ultrasonic micro-motor, which can be driven by a single signal and in which the change of the direction of the rotor movement can be made easily by selecting the electrode to apply the driving signal, can easily construct a self-oscillating circuit and simplify the driving circuit. We have also simplified the motor structure, which is easy to miniaturize and mass-produce. We applied a version of this motor with a diameter of 8 mm to a vibration alarm, and one with a diameter of 4.5 mm to a driving source of a calendar mechanism in a watch. This ultrasonic micro-motor is expected to be of use as a new driving source in a broad range of fields. 相似文献
75.
76.
Latest advances for asymmetric synthesis through reduction and oxidation including deracemization by biocatalysts are reviewed. Newly developed methodologies as well as practical applications are covered. 相似文献
77.
78.
The single crystals of the superconducting Li0.2(1)ZrNCl have been derived from the single crystals of β-ZrNCl by intercalation of lithium using an n-butyllithium solution in hexane. The crystal structure has been refined on the basis of the single-crystal X-ray data: the space group R-3m, a=3.591(1) Å, c=27.839(6) Å, Z=6, R1=0.0749 for 196 reflections and 12 variables. β-ZrNCl is isotypic with SmSI, while the structure of Li0.2(1)ZrNCl can be described as the Li intercalated YOF type, a stacking variant of the SmSI type. The tightly bound slabs with a Cl-Zr-N-N-Zr-Cl sequence of close-packed layers are stacked rhombohedrally along the c-axis, with the van der Waals gaps between the chlorine layers hosting Li ions. This is the first single-crystal study on the Li intercalated phase. The structural changes from the pristine single crystals were precisely determined. 相似文献
79.
Mizoshita N Yamanaka K Shimada T Tani T Inagaki S 《Chemical communications (Cambridge, England)》2010,46(48):9235-9237
Polycondensation of 9-mesityl-10-methylacridinium-bridged organosilane in the presence of a nonionic surfactant yielded a mesostructured organosilica solid with a functional framework that exhibited long-lived photoinduced charge separation. 相似文献
80.
The coupled equations which describe the temporal evolution of the Bose–Einstein condensed system are derived in the framework of nonequilibrium Thermo Field Dynamics. The key element is that they are not the naive assemblages of assumed equations, but are the self-consistent ones derived by appropriate renormalization conditions. While the order parameter is time-dependent, an explicit quasiparticle picture is constructed by a time-dependent expansion. Our formulation is valid even for the system with a unstable condensate, and describes the condensate decay caused by the Landau instability as well as by the dynamical one. 相似文献