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Your search keyword '"Toyama, Takeshi"' showing total 348 results
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348 results on '"Toyama, Takeshi"'

151. Horizontal Impedance of the Kicker Magnet of RCS at J-PARC

Author

Shobuda, Yoshihiro, Kamiya, Junichiro, Toyama, Takeshi, and Watanabe, Masao

Subjects
05 Beam Dynamics and Electromagnetic Fields, Physics::Accelerator Physics, D05 Instabilities - Processes, Impedances, Countermeasures, Physics::Classical Physics, Accelerator Physics
Abstract

There is the famous formula of the horizontal impedance for the matched-traveling wave kicker. However, the real and the imaginary parts of the impedance do not satisfy the Hilbert transformations. On the other hand, the impedance measured by a loop method does not directly give the beam impedance. In this paper we theoretically derive the beam impedance and reproduce the impedance by using the estimated inductances of the kicker by the loop measurement., Proceedings of the 1st International Particle Accelerator Conference, IPAC2010, Kyoto, Japan

Published
2010
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158. Three-Dimensional Dopant Characterization of Actual Metal–Oxide–Semiconductor Devices of 65 nm Node by Atom Probe Tomography

Author

Inoue, Koji, primary, Takamizawa, Hisashi, additional, Shimizu, Yasuo, additional, Yano, Fumiko, additional, Toyama, Takeshi, additional, Nishida, Akio, additional, Mogami, Tohru, additional, Kitamoto, Katsuyuki, additional, Miyagi, Takahiro, additional, Kato, Jun, additional, Akahori, Seishi, additional, Okada, Noriyuki, additional, Kato, Mikio, additional, Uchida, Hiroshi, additional, and Nagai, Yasuyoshi, additional

Published
2013
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169. Beam commissioning and operation of the J-PARC main ring synchrotron

Author

Koseki, Tadashi, primary, Arakaki, Yoshitugu, additional, Chin, Yong Ho, additional, Hara, Keigo, additional, Hasegawa, Katsushi, additional, Hashimoto, Yoshinori, additional, Hori, Yoichiro, additional, Igarashi, Susumu, additional, Ishii, Koji, additional, Kamikubota, Norihiko, additional, Kimura, Takuro, additional, Koseki, Kunio, additional, Fan, Kuanjyun, additional, Kubota, Chikashi, additional, Kuniyasu, Yuu, additional, Kurimoto, Yoshinori, additional, Lee, Seishu, additional, Matsumoto, Hiroshi, additional, Molodozhentsev, Alexander, additional, Morita, Yuichi, additional, Murasugi, Shigeru, additional, Muto, Ryotaro, additional, Naito, Fujio, additional, Nakagawa, Hidetoshi, additional, Nakamura, Shu, additional, Niki, Kazuaki, additional, Ohmi, Kazuhito, additional, Ohmori, Chihiro, additional, Okada, Masashi, additional, Okamura, Katsuya, additional, Oogoe, Takao, additional, Ooya, Kazufumi, additional, Sato, Kenichi, additional, Sato, Yoichi, additional, Sato, Yoshihiro, additional, Satou, Kenichirou, additional, Shimamoto, Masayuki, additional, Shirakata, Masashi, additional, Someya, Hirohiko, additional, Sugimoto, Takuya, additional, Takano, Junpei, additional, Takeda, Yasuhiro, additional, Takiyama, Yoichi, additional, Tejima, Masaki, additional, Toda, Makoto, additional, Tomizawa, Masahito, additional, Toyama, Takeshi, additional, Uota, Masahiko, additional, Yamada, Shuei, additional, Yamamoto, Noboru, additional, Yanaoka, Eiichi, additional, Yoshii, Masahito, additional, Harada, Hiroyuki, additional, Hatakeyama, Shuichiro, additional, Hotchi, Hideaki, additional, Nomura, Masahiro, additional, Schnase, Alexander, additional, Shimada, Taihei, additional, Tamura, Fumihiko, additional, Yamamoto, Masanobu, additional, and Shimogawa, Tetsushi, additional

Published
2012
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172. Three-Dimensional Elemental Analysis of Commercial 45 nm Node Device with High-$k$/Metal Gate Stack by Atom Probe Tomography

Author

Inoue, Koji, primary, Takamizawa, Hisashi, additional, Kitamoto, Katsuyuki, additional, Kato, Jun, additional, Miyagi, Takahiro, additional, Nakagawa, Yoshitsugu, additional, Kawasaki, Naohiko, additional, Sugiyama, Naoyuki, additional, Hashimoto, Hideki, additional, Shimizu, Yasuo, additional, Toyama, Takeshi, additional, Nagai, Yasuyoshi, additional, and Karen, Akiya, additional

Published
2011
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181. Foreword to Feature Articles on the Recent Advances in Microstructure Research for Materials Development via Microscopy (8)

Author

Abe, Hiroaki, primary, Arakawa, Kazuto, additional, Satou, Manabu, additional, Satoh, Yuhki, additional, Taniwaki, Masafumi, additional, Toyama, Takeshi, additional, Nagai, Yasuyoshi, additional, Muto, Shunsuke, additional, Yasuda, Kazuhiro, additional, Yasuda, Hidehiro, additional, Yoshiie, Toshimasa, additional, Wakai, Eiichi, additional, Watanabe, Seiichi, additional, and Watanabe, Hideo, additional

Published
2008
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187. Observation of the Acceleration of a Single Bunch by Using the Induction Device in the KEK Proton Synchrotron

Author

Takayama, Ken, primary, Koseki, Kunio, additional, Torikai, Kota, additional, Tokuchi, Akira, additional, Nakamura, Eiji, additional, Arakida, Yoshio, additional, Shimosaki, Yoshito, additional, Wake, Masayoshi, additional, Kouno, Tadaaki, additional, Horioka, Kazuhiko, additional, Igarashi, Susumu, additional, Iwashita, Taiki, additional, Kawasaki, Atsushi, additional, Kishiro, Jun-ichi, additional, Sakuda, Makoto, additional, Sato, Hikaru, additional, Shiho, Makoto, additional, Shirakata, Masashi, additional, Sueno, Tsuyoshi, additional, Toyama, Takeshi, additional, Watanabe, Masao, additional, and Yamane, Isao, additional

Published
2005
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190. Purification Experiments of Ocean Sludge by Activating Microorganisms by Using Detergent Including Enzyme as the Activator.

Author

Okamoto, Kyoichi, Hotta, Kenji, Toyama, Takeshi, and Kohno, Hideki

Abstract

The article discusses a study which investigated a purification system for sedimentary sludge utilizing a micro-bubble device and detergent and by activating microorganisms. It is noted that ocean sludge poses a huge environmental load to local sea area. The researchers were able to reduce the time needed to purify the sludge.

Published
2012

191. Experiments on Purification of Ocean Sludge by Activating Microorganisms.

Author

Okamoto, Kyoichi, Hotta, Kenji, Toyama, Takeshi, and Kohno, Hideki

Abstract

The article focuses on a study which described experiments on purification of ocean sludge by activating microorganisms. The experimental devices, the micro-bubble generating tank and the experimental tank, used in the study are described. Results of measurements of dissolved oxygen (DO), water temperature and pH an experimental conditions for the experiment are discussed. Effects of purification in relation to water temperature are also noted.

Published
2011

192. Apparatus for making outgoing call

Author

Toyama Takeshi, Ueno Yasuhide, Matsuzaki Susumu, Nakao Muneki, Hiroshi Nobuta, and Sugawara Naoki

Subjects
Audio mining, Voice activity detection, Acoustics and Ultrasonics, business.industry, Computer science, Speech recognition, Acoustic model, computer.software_genre, Speech processing, Speaker recognition, Arts and Humanities (miscellaneous), Telephony, State (computer science), Audio signal processing, business, computer
Abstract

Whether a call is placed after waiting for confirmation operation or without waiting for confirmation operation upon completion of speech recognition is selected. Data is initialized in the standby state, and upon instruction of speech recognition, speech recognition is done. The speech recognition result is displayed, and when a speech recognition key is operated without any confirmation operation, speech recognition is redone without setting the standby state.

Published
2005

199. Electrically polarized micro-arc oxidized TiO2 coatings with enhanced surface hydrophilicity.

Author

Ma, Chufan, Nagai, Akiko, Yamazaki, Yuko, Toyama, Takeshi, Tsutsumi, Yusuke, Hanawa, Takao, Wang, Wei, and Yamashita, Kimihiro

Subjects
TITANIUM oxides, ELECTRIC fields, X-ray photoelectron spectroscopy, SURFACE tension, CONTACT angle, POLARIZATION (Electricity)
Abstract

Abstract: The use of micro-arc oxidation titania (MAO TiO2) coatings to modify titanium surfaces improves the biocompatibility of implant surfaces. To obtain hydrophilic MAO TiO2 coating surfaces electric polarization, which induces surface electric fields in the materials and produces surface charges, was performed in this study. Electric polarization of the MAO TiO2 coatings was confirmed by measuring the thermally stimulated depolarization current. After electric polarization treatment the MAO TiO2 coatings did not exhibit any obvious changes in surface roughness, morphology, or phase components. X-ray photoelectron spectroscopy results indicated that electric polarization resulted in oxidation of the cathodic-faced surfaces and reduction of the anodic-faced surfaces. This result suggests that the existence of a concentration gradient of oxide ions/oxygen vacancies produced the stored space charge in the coatings. Reduction of the deionized water contact angle on the polarized MAO TiO2 surfaces was maintained for longer periods compared with the non-polarized surface. Our study demonstrated that metastable electric fields across the MAO TiO2 coating produced by electric polarization made it durably wettable by reducing the interfacial surface tension between the material and water. [Copyright &y& Elsevier]

Published
2012
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200. Effect of strontium and lithium ions on afterglow time of red-emitting CaS:Eu2+, Pr3+ phosphor upon visible-light irradiation

Author

Kojima, Yoshiyuki and Toyama, Takeshi

Subjects
*AFTERGLOW (Physics), *SPECTRUM analysis, *PHOSPHORS, *IRRADIATION, *STRONTIUM, *LITHIUM ions, *THERMOLUMINESCENCE
Abstract

Abstract: This paper reports on the effect of the amount of Li+ and Sr2+ ions added to a red-emitting phosphor (CaS:Eu2+, Pr3+) on afterglow time upon visible-light irradiation. The afterglow time of CaS:Eu2+, Pr3+ phosphor with Sr2+ ions (initial Sr/Ca atomic ratio of 0.10) was longer than that of the phosphor without Sr2+ ions by 20min. Moreover, the afterglow time of the Ca0.9Sr0.1S:Eu2+, Pr3+ phosphor with Li+ ions increased with an increase in the initial Li/Ca atomic ratio and was 146min for an initial Li/Ca atomic ratio of 0.04. The lattice strain of the phosphor with both Sr2+ and Li+ ions showed a minimum value for this synthetic condition. The trap depths resulting from Li+ ion addition increased by about 0.145eV. By adding both Li+ and Sr2+ ions to the CaS:Eu2+, Pr3+ host, it was possible to improve the afterglow time. [Copyright &y& Elsevier]

Published
2009
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