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A Search for Deeply-bound Kaonic Nuclear States by In-flight $^3$He($K^-, n$) Reaction at J-PARC
Sakuma, F.,Ajimura, S.,Beer, G.,Bhang, H.,Bragadireanu, M.,Buehler, P.,Busso, L.,Cargnelli, M.,Choi, S.,Curceanu, C.,Enomoto, S.,Faso, D.,Fujioka, H.,Fujiwara, Y.,Fukuda, T.,Guaraldo, C.,Hashimoto, T. Jagiellonian University 2014 Acta physica Polonica. B Vol.45 No.3
ALUMINA POWDER PREPARED BY THE HYDROLYSIS OF AL-PROPOXIDE IN THE SUPERCRITICAL FLUID OF PROPANOL
Nakagawa, Nakagawa, Z.,Enomoto, Enomoto, N.,Nomura, Nomura, S.,Kim, Kim, D.W.,Lim, Lim, D.Y. 한국재료학회 1995 Fabrication and Characterization of Advanced Mater Vol.2 No.4
Al-isopropoxide dispersed into isopropanol was heated in an autoclave above the critical point of propanol(23$5^{\circ}C$, 4.7MPa). Propanol coexisting Al-isopropoxide produced some water during the condensation reaction to isopropul ether, while only propanol did not change under that conditions. This water hydrolyzed Al-isopropoxide to form an alumina at 30$5^{\circ}C$ and 11.0MPa. This alumina had a similar X-ray diffraction pattern of $\chi$-alumina. The heating treatment showed the aluminal transformed directly to ${\alpha}$-alumina around 110$0^{\circ}C$, not to pass via any other intermediate aluminas. The aluminal was named pseudo $\chi$-alumina as a new phase. As-prepared alumina was fine powder of about 20nm, and had about 5% weight loss in the temperature range from 30$0^{\circ}C$ to 65$0^{\circ}C$, and the IR spectral showed no constitutional water.
Development of a High Speed Motor Using Amorphous Metal Cores
Z Wang,Y Enomoto,R Masaki,K Souma,H Itabashi,S Tanigawa 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
This paper presents the development of a 10kr/min motor that utilizes the amorphous toroidal core. This motor employs a non-slotted axial gap structure with two ferrite magnet rotors and one amorphous toroidal stator. The goal of the motor is to produce a 400W output, at 90% high efficiency with a size of Φ 100×L30. The low core loss design is employed to decrease the large core losses produced by a high frequency field. The motor design equations and three dimensional finite element analysis (3D FEA calculations) are presented. A prototype machine was manufactured. The structure of the prototype and the test results are presented in this paper.