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Takashi MINAMI Shohei ARAI Naoki KENMOCHI Hiroaki YASHIRO Chihiro TAKAHASHI Shinji KOBAYASHI Tohru MIZUUCHI Shinsuke OHSHIMA Satoshi YAMAMOTO Hiroyuki OKADA Kazunobu NAGASAKI Yuji NAKAMURA Kiyoshi HANATANI Shigeru KONOSHIMA Fumimichi SANO 《等离子体科学和技术》2013,(3):240-243
A new high repetition rate Nd:YAG Thomson scattering system is developed for the Heliotron J helical device.A main purpose of installing the new system is the temporal evolution measurement of a plasma profile for improved confinement physics such as the edge transport barrier (H-mode) or the internal transport barrier of the helical plasma.The system has 25 spatial points with ~10mm resolution.Two high repetition Nd:YAG lasers (>550mJ@ 50Hz) realize the measurement of the time evolution of the plasma profile with ~10ms time intervals.Scattered light is collected by a large concave mirror (D=800 mm,f/2.25) with a solid angle of ~100 mstr and transferred to interference filter polychromators by optical fiber bundles in a staircase form.The signal is amplified by newly designed fast preamplifiers with DC and AC output,which reduces the low frequency background noise.The signals are digitized with a multi-event QDC,fast gated integrators.The data acquisition is performed by a VME-based system operated by the CINOS. 相似文献
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YOTARO NOSE TAKAO TSUJI TSUTOMU OYAMA TAKAHARU ITO KATSUYA ABE MASAHIRO MINAMI KAZUNARI ISHIBASHI 《Electrical Engineering in Japan》2017,198(4):51-62
It is of prime importance to maintain voltage profile within the proper range in distribution systems with a large amount of photovoltaics and electric vehicles (EVs). In particular, there is a possibility that line drop compensation (LDC) logic, which is utilized for the control of load ratio tap transformer (LRT) does not work properly when reverse power flow is included partially. Hence, in this paper, we have developed a new LRT control method based on the sensor information supposing that some section switchgears with sensors are introduced in the future distribution systems. Specifically, the extreme value of voltage profile is estimated by convergence calculation in the section between the section switchgear with sensor and LRT. Moreover, the voltage at the end node can be estimated by LDC method using sensor information of section switchgear. The proposed method was tested using a distribution system model and its effectiveness was shown. 相似文献
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The non-thermal plasma as one of the most promising technologies for removing NOx and SO2 has attrm~ted much attention. In this study, a new plasma reactor combined with catalyst and additive was developed to effectively oxidize and remove NOx and SO2 in the flue gas. The experimental results showed that TiO2 could improve the oxidation efficiency of SO2 in the case of applying plasma while having a negative effect on the oxidation process of NO and NOx. With the addition of NH3, the oxidation rates of NOx, NO and SO2 were slightly increased. However, the effect of adding NH3 on NOx oxidation was negative when the temperature was above 200℃. 相似文献
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Cu+ -ion-conducting glasses were prepared in the pseudo-binary system CuI-Cu2 MoO4 . These glasses have high ionic conductivities at room temperature in the range 10−1 to 10° S·m−1 , which are 10 to 20 times greater than those of the Ag+ -ion-conducting glasses with the same iodide contents in the system AgI-Ag2 MoO4 . The conductivities increase with increasing CuI content. The increase in the conductivity can be explained in terms of a decrease in the activation energy for conduction. The electronic conductivity was measured by the Wagner polarization method and indicates that the transport number of Cu+ ions in those glasses is 0.9996 and larger. 相似文献
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N. TORATA T. SAITO M. TATSUMISAGO T. MINAMI 《Journal of Materials Science Letters》1997,16(12):1012-1016
Abstracts are not published in this journal
This revised version was published online in November 2006 with corrections to the Cover Date. 相似文献
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TAKESHI MINAMI TAKASHI BOKU KATSUHIRO INADA MASANORI MORITA YUKO OKAZAKI 《Journal of food science》1989,54(3):763-763
The major odor components of finely grated, raw garlic in the air of the human mouth have been studied. Immediately after garlic ingestion, tests of the mouth air of six subjects revealed two major peaks that were positively identified as being allyl mercaptan and diallyl disulfide; these findings are based on an evaluation of the fragment patterns of a GC-MS analysis and from the actual retention times of these authentic compounds. The allyl mercaptan level was higher than the level of diallyl disulfide, although both compounds smell like garlic. Our results suggest that after garlic ingestion, allyl mercaptan is the major garlic-smelling compound in human mouth air, and diallyl disulfide is secondary. 相似文献
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SEIJI YONEZAWA NANAKO MATSUOKA SATOSHI TAKAYAMA ATSUSHI ISHIGAME YASUO MATSUURA KATSUYA ABE MASAHIRO MINAMI 《Electrical Engineering in Japan》2017,199(4):3-12
Recent years, installation of photovoltaic (PV) system is active by the environmental problem and feed in tariff system. Due to PV's output fluctuation, the static var compensator (SVC) made by power electronics technology is planning to install in distribution system. The SVC is expected for maintain the voltage. But SVC differs in a theory of operation of the existing voltage controller load ratio control transformer (LRT) and step voltage regulator (SVR). Because the SVC operation makes the system impedance changes, the existing voltage controller may not operate effectively. In this study, the intelligent‐control method which used the radial basis function (RBF) network is proposed. This method can reduce the effects of the SVC operation by including the performance characteristics of SVC in the conventional method. An advantage of unnecessary arrangement attention of the SVC setup node and easy cooperation with the existing equipment is obtained by applying this method. 相似文献
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MASAHIRO TATSUMISAGO AKIRA HAMADA TSUTOMU MINAMI MASAMI TANAKA 《Journal of the American Ceramic Society》1982,65(11):575-577
Glasses were prepared in the wide variety of compositions in the system Li2 O-BaO-Nb2 O5 , which contains no "glass-former," by the twin-roller quenching technique. The crystallization temperature ranges from 500° to 700°C and increases as Li2 O is replaced by BaO. The dielectric constant increases steeply with temperature, reaching an anomalously large value (104 ) in glasses which contain a large amount of Li2 O. Such a temperature dependence of dielectric constant is very similar to that of conductivity in each glass, indicating that the dielectric behavior is caused by polarization due to the ionic motion in glass. The conductivity at 500 K ranges from 10−13 to 10−5 Ω−1 ·cm−1 and the activation energy for conduction from 120 to 40 kJ/mol. The concentration of Li+ ions mainly controls the conductivity and the addition of Ba2+ ions slightly lowers it. 相似文献