Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Keiko Masumoto"'
Publikováno v:
Asian Journal of Atmospheric Environment, Vol 14, Iss 4, Pp 345-366 (2020)
Long-term observational data for the size distributions and particulate chemical components have been summarized to understand the past and current particulate conditions in Osaka City. The positive matrix factorization (PMF) method was also applied
Externí odkaz:
https://doaj.org/article/4bc4bd36f24046b0bab00a0544d9710e
Publikováno v:
Materials, Vol 13, Iss 21, p 4818 (2020)
In this study, we grew homoepitaxial layers on 3-inch on-axis carbon-face 4H-silicon carbide substrates and attempted to suppress the generation of 3C-inclusions. It was found that the 3C-inclusion density decreased with increasing time spent on reac
Externí odkaz:
https://doaj.org/article/4d737944862f4332842852ef6de041e7
Autor:
Keiko Masumoto, Hirokuni Asamizu, Kentaro Tamura, Chiaki Kudou, Johji Nishio, Kazutoshi Kojima, Toshiyuki Ohno, Hajime Okumura
Publikováno v:
Materials, Vol 7, Iss 10, Pp 7010-7021 (2014)
We grew epitaxial layers on 4H-silicon carbide (SiC) Si-face substrates with a 1° off-angle. The suppression of 3C-inclusion formation during growth at a high C/Si ratio was investigated, because a growth technique with a high C/Si ratio is needed t
Externí odkaz:
https://doaj.org/article/bd553eef65eb41988614e749e5ab43c4
Autor:
Manobu Tanaka, Yasunori Tanaka, Tetsuichi Kishishita, Ryoji Kosugi, Keiko Masumoto, Kazutoshi Kojima, Hajime Nishiguchi, Y. Fujita, Y. Fukao
Publikováno v:
IEEE Transactions on Nuclear Science. 68:2787-2793
We report on SiC pn-junction diodes with a high blocking voltage over 3 kV. Although SiC radiation sensors have been developed with a Schottky barrier type due to a simple fabrication process in the early stages, pn junction structures are advantageo
Autor:
Junji Senzaki, Ryoji Kosugi, Keiko Masumoto, Takeshi Mitani, Takeharu Kuroiwa, Hiroshi Yamaguchi
Publikováno v:
2022 IEEE International Reliability Physics Symposium (IRPS).
Autor:
Junji Senzaki, Tsutomu Osanai, Keiko Masumoto, Kenji Kobayashi, Noriyuki Kaneoka, Masaki Hasegawa, Ogata Tomohiko, Kentaro Ohira, Katsunori Onuki
Publikováno v:
Materials Science Forum. 1004:369-375
Crystal damage beneath the surface remaining after chemo-mechanical polishing (CMP) and basal plane dislocations (BPDs) of 4H-SiC epi-ready substrates have been inspected by using a mirror electron microscope inspection system non-destructively. Dist
Autor:
Tetsuichi Kishishita, Ryoji Kosugi, Yowichi Fujita, Yoshinori Fukao, Kazutoshi Kojima, Keiko Masumoto, Hajime Nishiguchi, Manobu M. Tanaka, Yasunori Tanaka
Publikováno v:
IEEE Transactions on Nuclear Science. :1-1
Autor:
Satoshi Nakao, Tadashi Nakatani, Keiko Masumoto, Takanori Sakiyama, Asako Ozaki, Kazuo Yamazaki
Publikováno v:
Water and Environment Journal. 34:474-488
Publikováno v:
The Science of the total environment. 795
The fate of microplastics (MPs) in the sewage treatment process has been investigated worldwide, and novel results have been reported; few studies have also clarified the fate of MPs in the sewage sludge treatment process. Although most MPs in sewage
Publikováno v:
Materials
Volume 13
Issue 21
Materials, Vol 13, Iss 4818, p 4818 (2020)
Volume 13
Issue 21
Materials, Vol 13, Iss 4818, p 4818 (2020)
In this study, we grew homoepitaxial layers on 3-inch on-axis carbon-face 4H-silicon carbide substrates and attempted to suppress the generation of 3C-inclusions. It was found that the 3C-inclusion density decreased with increasing time spent on reac