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61.
Kiyomi Kakiuchi Takuo Nakao Mitsunori Takeda Yoshito Tobe Yoshinobu Odaira 《Tetrahedron letters》1984,25(5):557-560
The novel synthesis of descarboxyquadrone (3) and its model compound (4) by using the acid-catalyzed rearrangement of [4.3.2]propellanones is described. 相似文献
62.
Kiyoshi Toda Mitsunori Miyake Hisao Ohtake 《Applied biochemistry and biotechnology》1990,26(2):139-149
A new process of biological waste treatment was developed by use of microbial films grown on the liquid surface in a shallow flow reactor. The performance of this process was tested using a synthetic waste that contained acetic acid as a model organic pollutant. About 90% of acetic acid (10,000 mg/L-1) in the synthetic waste was removed by setting alpha tau: (alpha specific liquid surface area, cm-1, and tau: hydraulic liquid detention time, h) higher than 15 cm-1/h. It was necessary to maintain alpha large enough (more than 10 cm-1 in most cases) to satisfy oxygen demand for the biooxidation. The oxygen balance and TOC determinations showed that the acetic acid removed was completely oxidized with oxygen transferred through the liquid surface. This process would contribute to energy savings, since it requires no forced aeration for oxygen supply. 相似文献
63.
Kikuchi Y Yamada H Kunimori H Tsukada T Hozawa M Yokoyama C Kubo M 《Langmuir : the ACS journal of surfaces and colloids》2005,21(8):3273-3278
In this study, the aggregation and breakup behaviors of latex particles in shear flow confined between two parallel plates were investigated using an in situ observation apparatus with a laser scanning confocal microscope. To investigate the effects of shear rate and the gap width between two parallel plates on the size and structure of the aggregates in the steady state, the distributions of the projected cross-sectional area and perimeter-based fractal dimension of the aggregates were measured. As a result, the average size of the aggregates decreases as shear rate increases and the gap width decreases due to the hydrodynamic effect acting on the aggregates. The size distributions of the aggregates become narrow as the gap width decreases. In addition, the fractal dimension, that is, the structure of the aggregates, was almost independent of shear rate and the gap width and approximately 1.2, which suggests that the aggregates are relatively compact. 相似文献
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66.
Nguyen Chung Thanh Takanori Kajioka Yasunori Taga Satoshi Ogawa Yosuke Miyahara Mitsunori Oda 《Tetrahedron》2006,62(48):11227-11239
After a preliminary search of the reaction conditions for the Suzuki-Miyaura cross-coupling of haloazulenes with arylboronic acids, the title compounds were synthesized either by the direct coupling reaction between 1,3-dihaloazulene and the corresponding N,N-disubstituted 4-aminophenylboronic acids or by a two-step sequence involving the cross-coupling with 4-bromophenylboronic acid and subsequent Pd-catalyzed amination. Application of the title diamines to a hole-injecting material in organic electroluminescent devices was carried out to provide their prominent characteristics as a novel durable, non-cyanine and non-polyamine substance without color fade. The diamine derivatives, extended by an ethynyl unit between the azulenyl core and the 4-aminophenyl moiety, were also synthesized and found, unfortunately, unsuitable for vacuum deposition in preparing a multilayer composite. 相似文献
67.
Mitsunori Honda Yusuke Taniguchi Tomohiro Hayashi Ko-Ki Kunimoto Masahito Segi Takahiro Yamaguchi 《Tetrahedron letters》2017,58(48):4554-4558
The synthesis of a novel class of 3-silyl substituted thiophenes possessing perfluoroalkyl groups on the silicon atom was investigated. The treatment of 3-bromothiophene with n-butyllithium followed by the reaction with halosilanes proceeded to afford the corresponding 3-silyl substituted thiophenes 1 in good yields. The chemical polymerization of the resulting 1 did not work well. However, the electropolymerization of 3-silylthiophenes 1a and 1b provided the corresponding polymers 5a and 5b with head-to-tail regioregularity. The cyclic voltammogram of the resulting polymers 5a and 5b indicated both n- and p-doping properties. 相似文献
68.
Y. Asada A. Freyn J.-L. Pichard 《The European Physical Journal B - Condensed Matter and Complex Systems》2006,53(1):109-120
A nano-system in which electrons interact and in contact with
Fermi leads gives rise to an effective one-body scattering which
depends on the presence of other scatterers in the attached leads.
This non local effect is a pure many-body effect that one neglects
when one takes non interacting models for describing quantum transport.
This enhances the non-local character of the quantum conductance by
exchange interactions of a type similar to the RKKY-interaction between
local magnetic moments. A theoretical study of this effect is given
assuming the Hartree-Fock approximation for spinless fermions of Fermi
momentum kF in an infinite chain embedding two scatterers
separated by a segment of length Lc. The fermions interact only inside
the two scatterers. The dependence of one scatterer onto the other exhibits
oscillations of period π/kF which decay as 1/Lc and
which are suppressed when Lc exceeds the thermal length
LT. The analytical results given by the Hartree-Fock
approximation are compared with exact numerical results obtained with
the embedding method and the DMRG algorithm. 相似文献
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