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排序方式: 共有184条查询结果,搜索用时 203 毫秒
171.
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Total Diesel Emission Control Technology Using Ozone Injection and Plasma Desorption 总被引:2,自引:0,他引:2
Masaaki Okubo Naoki Arita Tomoyuki Kuroki Keiichiro Yoshida Toshiaki Yamamoto 《Plasma Chemistry and Plasma Processing》2008,28(2):173-187
An innovative total diesel emission control system for diesel particulate and NOx simultaneous reduction is proposed. In this system, the plasma reactor is located outside the emission exhaust pipe and activated
gas induced from ozone activated by the plasma is injected into the exhaust pipe. On the other hand, the NOx reduction is achieved using oxygen-poor nonthermal plasma desorption. The concentration of oxygen can be changed either by
controlling the incineration state of the engine or by injecting oxygen-poor gas. Experiments are carried out for the emission
of small diesel engine generator and high performance is demonstrated. The effective or apparent required plasma energy can
be decreased further using this system because of the periodic or intermittent application of the plasma. In the present study,
the excellent reduction energy efficiencies of 6.6 g/kWh for PM and 16 g (NO2)/kWh for NOx are achieved. 相似文献
174.
H. Aizawa K. Kuroki T. Yokoyama Y. Tanaka 《Physica C: Superconductivity and its Applications》2009,469(15-20):995-998
We study the Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) state of spin fluctuation mediated superconductivity and focus on the effect of coexisting charge fluctuations. We find that (i) consecutive transitions from singlet pairing to FFLO and further to Sz=1 triplet pairing can generally take place upon increasing the magnetic field when strong charge fluctuations coexist with spin fluctuations and (ii) the enhancement of the charge fluctuations lead to a significant increase of the parity mixing in the FFLO state, where the triplet/singlet component ratio in the gap function can be close to unity. We propose that such consecutive pairing state transition and strong parity mixing in the FFLO state may take place in a quasi-one-dimensional organic superconductor (TMTSF)2X. 相似文献
175.
In order to probe the effect of charge fluctuations on triplet pairing, we study the pairing symmetry in the one-band Hubbard model having the off-site Coulomb repulsion (V) on top of the on-site repulsion as a model for the gamma band of Sr2RuO4, a strong candidate for a triplet pairing superconductor. The result, obtained with the dynamical cluster approximation combined with the quantum Monte Carlo method, and confirmed from the fluctuation exchange approximation, shows that while d(x(2)-y(2)) pairing dominates over p in the absence of V, introduction of V makes p(x+y) and d(xy) dominant. The gap function for the chiral p(x+y)+ip(x-y) has nodes that are consistent with the recent measurement of specific heat in rotated magnetic fields in the ruthenate. This suggests that the off-site repulsion may play an essential role in triplet superconductivity in this material. 相似文献
176.
o-Cyano-beta,beta-difluorostyrenes react with organolithiums selectively at the cyano carbon to generate the corresponding sp(2) nitrogen anions, which in turn undergo intramolecular replacement of the vinylic fluorine to afford 3-fluoroisoquinolines. Similarly, the reaction of beta,beta-difluoro-o-isocyanostyrenes with organomagnesiums or -lithiums generates the corresponding sp(2) carbanions on the isocyano carbon. Subsequent cyclization via substitution of the fluorine leads to 3-fluoroquinolines. [reaction: see text] 相似文献
177.
Toru Takagishi Nobuhiko Kuroki 《Journal of polymer science. Part A, Polymer chemistry》1980,18(1):259-264
Hexamethylenetetramine (HMT) has been examined for its effect on the binding of methyl orange homologs, methyl orange, ethyl orange, propyl orange, and butyl orange by polyvinylpyrrolidone (PVP). In the presence of HMT the entropy changes associated with the binding tend to become more positive and the absolute magnitude in the enthalpy changes becomes smaller compared with those in the absence of HMT. These tendencies are accounted for in terms of the water-structure-promoting effect of HMT, hence the enhancement of hydrophobic interactions in the binding. PVP undergoes changes in conformation on the addition of HMT and its conformation becomes more compact. This also increases the contribution of the hydrophobic interactions to the macromolecule-small molecule interaction. Some other effects exerted by the added HMT on the binding system are also described. 相似文献
178.
Yutaka Tsunashima Tokunori Sugimoto Masatane Kuroki 《Journal of heterocyclic chemistry》1982,19(4):933-934
The structure of Carruthers' pentamethylcarbazole isolated from Kuwait mineral oil was determined. From the reported spectral data, we deduced methyl-substitutions at the 1-, 2-, 4-, 6- and 8-positions and this was confirmed by synthesis. This is a good example demonstrating the usefulness of uv spectral additivity. 相似文献
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