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81.
A novel way of determining the Hamiltonian of the interacting boson model (IBM) is proposed. Based on the fact that the potential energy surface of the mean-field model, e.g., the Skyrme model, can be simulated by that of the IBM, parameters of the IBM Hamiltonian are obtained. By this method, the multifermion dynamics of surface deformation can be mapped, in a good approximation, onto a boson system. The validity of this process is examined for Sm and Ba isotopes, and an application is presented to an unexplored territory of the nuclear chart, namely, the right lower corner of 208Pb. 相似文献
82.
Anatase-type nanoparticles ScXTi1−2XNbXO2 with wide solid solution range (X=0-0.35) were hydrothermally formed at 180 °C for 5 h. The lattice parameters a0 and c0, and the optical band gap of anatase gradually and linearly increased with the increase of the content of niobium and scandium from X=0 to 0.35. Their photocatalytic activity and adsorptivity by the measurement of the concentration of methylene blue (MB) that remained in the solution in the dark or under UV-light irradiation were evaluated. The anatase phase existed stably up to 900 °C for the samples with X=0.25-0.30 and 750 °C for that with X=0.35 during heat treatment in air. The phase with α-PbO2 structure and the rutile phases coexisted in the samples with X=0.25-0.30 after heated at temperatures above 900-950 °C. The α-PbO2 structure having composition ScTiNbO6 with possibly some cation order similar to that seen in wolframite existed as almost completely single phase after heat treatment at temperatures 900-1500 °C through phase transformation from anatase-type ScTiNbO6. 相似文献
83.
84.
Syunichi Oshima Naoki Hirayama Koji Kubono Hisao Kokusen Takaharu Honjo 《Analytical sciences》2002,18(12):1351-1355
Structural control of Schiff base ligands for selective extraction of copper(II) was investigated by changing pendant arms and the distance between two imine-N donor atoms in ligands. Di-Schiff base ligands, N,N'-bis(2-quinolylmethylidene)-1,2-diiminoethane (BQIE), N,N'-bis(2-pyridylmethylidene)-1,3-diimino-2,2-dimethylpropane (BPMP) and N,N'-bis(2-quinolylmethylidene)-1,3-diimino-2,2-dimethylpropane (BQMP), were used as complexation reagents for ion-pair extraction of divalent transition metal cations into nitrobenzene with picrate anion. The pendant arms affected the lipophilicity of ligand to nitrobenzene, due to their polarity. The distance between two imine-N atoms, on the contrary, was a factor of controlling the extraction selectivity. BQMP has both 2-quinolyl pendant arms and trimethylene backbone structure; use of BQMP as a complexation reagent led to the selective extraction of Cu2+ in the system. 相似文献
85.
86.
Seigo Togashi Takaharu Suzuki Takaaki Aoyama Hiroshi Shimizu 《Molecular Crystals and Liquid Crystals》2013,570(1):117-123
White and Taylor type guest host displays using the tilted boundary condition have been reported. The parallel or the perpendicular boundary condition is usually used for these displays and both conditions cause scattering phemomena after the electric field removal. The present paper reports the relaxation processes of samples with the tilted boundary after the field removal. Using the tilted boundary, two types of nonscattering conditions depending on the thickness of the liquid crystal layer (d), the natural pitch (Po) and the boundary condition (φ) exist. Both types of conditions are discussed in detail. 相似文献
87.
Takaharu Asano Pi-Chao Wang Akio Iwasaki 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2010,75(1):305-309
For the purpose of detection of multimetal components in environment, alteration of the spectrophotometrical metal sensitivity of porphyrin was attempted. Two porphyrin-incorporated polymers were newly synthesized by the free radical copolymerization of protoporphyrin IX disodium salt and vinyl monomers, and their metal sensitivities were examined by measuring the difference absorption spectra. These porphyrin-incorporated polymers showed different metal sensitivities and their sensitivities were altered by change of pH. Three measuring reagents, which were different in the combination of the porphyrin-incorporated polymers and pH, were used for the simultaneous detection of multimetal components in metal ion mixtures. The difference spectra of these reagents showed the separate peaks corresponding to six metal ions, Bi(III), Co(II), Cu(II), Mn(II), Pb(II), and Zn(II). The spectra were acquired reproducibly by using standard normal variate (SNV) transformation. Furthermore, this method was applied to detect multimetal components in water samples such as tap water and industrial effluent. 相似文献
88.
Takaharu Otsuka Takahiro Mizusaki Yutaka Utsuno Michio Honma 《Czechoslovak Journal of Physics》1998,48(6-7):707-714
We propose a Quantum Monte Carlo diagonalization method for solving the quantum many-body interacting systems. Not only the
ground state but also low-lying excited states are obtained with their wave functions. Consequently the level structure of
low-lying states can be studied with realistic interactions. After testing this method with48Cr, we report that the doubly closed shell probability of56Ni is shown to be only 53% in a full pf shell calculation, in contrast to the corresponding probability of48Ca which reaches 86%. The most recent results on32Mg are presented.
Presented by T. Otsuka at the International Conference on “Atomic Nuclei and Metallic Clusters”, Prague, September 1–5, 1997.
This work was supported in part by Grant-in-Aid for Scientific Research (B) (No. 08454058) from the Ministry of Education,
Science and Culture. 相似文献
89.
90.
Chromatographia - The correlation between retention data of polycyclic aromatic hydrocarbons (PAHs) obtained in various supercritical fluid-chromatographic systems (SFC systems) and several... 相似文献