Výsledky vyhledávání - "Akihiro Osawa"

RC-IGBT power module for xEV powertrain with fast and accurate on-chip temperature sensor

Autor: Eri Ogawa, Nakayama Tomoya, Souichi Yoshida, Steffen Eward, Shunji Takenoiri, Masahito Otsuki, Akihiro Osawa

Publikováno v: 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe).

This paper describes the advantage of using reverse conducting-IGBT(RC-IGBT) with on-chip temperature sensor. It is possible to detect temperature of not only IGBT area but also FWD area. Additionally, simulated maximum current for the RC-IGBT with o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3cd1a637c49435ad590d1d05b72267b4
https://doi.org/10.23919/epe.2019.8914797

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Landscape-style Maps in Traditional Chinese Local Government

Autor: Akihiro Osawa

The various landscape-style maps that we have recently been learning about were originally painted at Local government offices. It is thought that they were not made for printing and publication but were kept as government materials.This becomes clea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c4c3a526a6b4783680645091fcc0825
https://www.abstr-int-cartogr-assoc.net/1/282/2019/

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Improvement of the I2t capability for xEV active short circuit protection by combination of RC-IGBT and Leadframe technologies

Autor: Keiichi Higuchi, Hayato Nakano, Akihiro Osawa, Akio Kitamura, Shunji Takenoiri, Daisuke Inoue, Souichi Yoshida, Hiromichi Gohara, Masahito Otsuki

Publikováno v: 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia).

This paper describes the investigation results of I2t capability for IGBT module used for xEV powertrain application. I2t experiments and simulation evaluations are done by RC-IGBT or the conventional FWD with bondwires structure. As a result, RC-IGB

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8a7803d7029630e67e10fe5c75a4614
https://doi.org/10.23919/ipec.2018.8507439

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Construction of an X-ray detecting module and its application to relative-sensitivity measurement using a silicon PIN diode in conjunction with short-decay-time scintillators

Autor: Osahiko Hagiwara, Toshiyuki Enomoto, Yumeka Arakawa, Shinichi Nihei, Yasuyuki Oda, Syouta Kami, Eiichi Sato, Tatsuki Hamaya, Shinya Kusachi, Hiroshi Matsukiyo, Manabu Watanabe, Akihiro Osawa, Wataru Numahata, Hayato Kogita

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 767:193-198

To detect low-dose-rate X-rays, we have developed an X-ray-detecting module for semiconductor diodes. The module consists of a current–voltage ( I – V ) amplifier, a voltage–voltage ( V – V ) amplifier, and an alternating-current adopter with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86b6a1ca221e355d66e389a5e811aaad
https://doi.org/10.1016/j.nima.2014.08.042

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Zero-dark-counting X-ray photon detection using a YAP(Ce)–MPPC detector and its application to computed tomography using gadolinium contrast media

Autor: Osahiko Hagiwara, Shigehiro Sato, Akira Ogawa, Hajime Kodama, Eiichi Sato, Manabu Watanabe, Toshiyuki Enomoto, Syouta Kami, Tatsuki Hamaya, Yasuyuki Oda, Hayato Kogita, Yumeka Arakawa, Shinichi Nihei, Shinya Kusachi, Hiroshi Matsukiyo, Akihiro Osawa, Wataru Numahata

Publikováno v: Radiation Physics and Chemistry. 100:1-7

To measure X-ray spectra and to perform photon-counting computed tomography (PC-CT) with high count rates, we developed a zero-dark-counting spectrometer using a short-decay-time scintillator. A method exploiting a YAP(Ce) [cerium-doped yttrium alumi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8c4857e3e51a034c73bb3a6de3a57547
https://doi.org/10.1016/j.radphyschem.2014.02.016

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100 μA-100 kV Photon-counting X-ray Computed Tomography System Using an LSO-MPPC Detector and a High-Speed Comparator and its Application to Gadolinium Imaging

Autor: Toshiyuki Enomoto, Shinya Kusachi, Osahiko Hagiwara, Hiraku Chiba, Yasuyuki Oda, Akihiro Osawa, Tomoko Maeda, Hiroshi Matsukiyo, Jun Onagawa, Ryo Matsushita, Yutaka Yanbe, Akira Ogawa, Eiichi Sato, Manabu Watanabe, Shigehiro Sato

Publikováno v: Journal of Medical Imaging and Radiation Sciences. 43:149-154

A high-sensitive x-ray computed tomography (CT) system is useful for decreasing absorbed dose for patients, and we performed preliminary experiments for first-generation photon-counting CT using a high-sensitive single detector. X-ray photons are det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0756291d23fc3540ffd596cbfb37046
https://doi.org/10.1016/j.jmir.2012.04.003

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Demonstration of enhanced iodine K-edge imaging using an energy-dispersive X-ray computed tomography system with a 25 mm/s-scan linear cadmium telluride detector and a single comparator

Autor: Yasuyuki Oda, Shigehiro Sato, Jun Onagawa, Akihiro Osawa, Toshiyuki Enomoto, Eiichi Sato, Osahiko Hagiwara, Akira Ogawa, Manabu Watanabe, Abulajiang Abudurexiti, Hiroshi Matsukiyo, Shinya Kusachi

Publikováno v: Applied Radiation and Isotopes. 70:831-836

An energy-dispersive (ED) X-ray computed tomography (CT) system is useful for carrying out monochromatic imaging. To perform enhanced iodine K-edge CT, we developed an oscillation linear cadmium telluride (CdTe) detector with a scan velocity of 25 mm

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::93f6073c2f5cd84bd4d39ba3b442c2d9
https://doi.org/10.1016/j.apradiso.2012.02.007

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6 Mcps photon-counting X-ray computed tomography system using a 25 mm/s-scan linear LSO–MPPC detector and its application to gadolinium imaging

Autor: Manabu Watanabe, Haruyuki Endo, Eiichi Sato, Osahiko Hagiwara, Abulajiang Abudurexiti, Toshiyuki Enomoto, Shinya Kusachi, Akira Ogawa, Hiroshi Matsukiyo, Akihiro Osawa, Yasuyuki Oda, Jun Onagawa, Shigeaki Sugimura, Shigehiro Sato

Publikováno v: Radiation Physics and Chemistry. 80:1327-1332

6 Mcps photon counting was carried out using a detector consisting of a 1.0 mm-thick LSO [Lu 2 (SiO 4 )O] single-crystal scintillator and an MPPC (multipixel photon counter) module in an X-ray computed tomography (CT) system. The maximum count rate w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::46720645707f8008525343aedf10eb88
https://doi.org/10.1016/j.radphyschem.2011.07.010

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Combined hepatic resection with the inferior vena cava and diaphragm and reconstruction using an equine pericardial patch: Report of a case

Autor: Toshiyuki Enomoto, Akihiro Osawa, Hiroshi Matsukiyo, Jiro Nagao, Yoshihisa Saida, Manabu Watanabe, Takaharu Kiribayashi, Koji Asai, Toshiaki Oharaseki, Yoichi Nakamura, Shinya Kusachi, Yasushi Okamoto, Tomoaki Saito

Publikováno v: Surgery Today. 41:1670-1673

We herein report a case of combined hepatic resection with inferior vena cava (IVC) and diaphragm resection, and reconstruction using an equine pericardial patch. A 54-year-old woman showed hepatic cancer recurrence on radiological imaging, with inva

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c55a468d94e0747aade18d0e6ddae1f5
https://doi.org/10.1007/s00595-011-4506-2

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