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Measurement of High Energy Neutron Induced Cross Sections for Chromium
S. Sekimoto,T. Utsunomiya,H. Yashima,H. Joto,S. Shibata,K. Ninomiya,D. Satoh,Y. Iwamoto,T. Omoto,R. Nakagaki,N. Takahashi,A. Shinohara,T. Shima,M. Hagiwara,H. Matsumura,K. Nishiizumi,Y. Matsushi,H. Ma 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
Reaction cross sections for Cr induced by neutrons at 287 MeV were measured by using ^7Li(p,n) reaction at N0 beam line in the Research Center for Nuclear Physics (RCNP), Osaka University. To estimate quasi-monoenergetic neutron-induced cross sections, the Cr sample was irradiated on the two angles of 0° and 30° for the axis of the primary proton beam. Proton-induced reaction cross sections for Cr at 300 MeV were also measured. The measured cross section data in the ^(nat)Cr(n,x) and ^(nat)Cr(p,x) reactions are compared with the literature values and the JENDL high-energy file. Furthermore, those in the ^(nat)Cr(n,x) reactions are also compared with those in the ^(nat)Cr(p,x) reaction.
일본기상청 전지구모델을 이용한 Vertical Non-Interpolating Semi-Lagrangian(VNISL) 기법 시험
정관영,이우진,T. Matsumura 한국기상학회 2004 한국기상학회 학술대회 논문집 Vol.2004 No.-
Ritchie(1991)가 제안한 준라그랑지 기법(VNISL, 3차원 modified trajectory를 적용하고 연직내삽을 하지 않는 기법)을 일본기상청의 새로운 전지구 모델에 성공적으로 이식하였으며, 태풍예측에 적용한 결과 기존의 기법보다 향상된 결과가 나타났다. 그러나, 시간적분간격이 길어 길수록 준라그랑지 모델의 강수율이 낮게 나타나고 있으며, 아직도 현업운영 중인 전지구모델보다 태풍예측능력이 낮게 나타나고 있다. 이는, 준라그랑지 기법적용 시 큰 시간적분간격을 얻을 수 있는 장점이 있으나, 긴 시간적분간격에 따른 역학과 물리과정간의 적절한 인터페이스가 필수적임을 의미한다.
Experimental study of a 400 V Class DC Microgrid for Commercial Buildings
M. Noritake,K. Yuasa,T. Takeda,K. Shimomachi,R. Hara,H. Kita,T. Matsumura 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6
This paper reports the experimental study of a 400 V class DC microgrid for an office building that has been constructed in Obihiro City, Hokkaido, Japan. The objective of this study is to develop a self-sustained distributed energy system by combining distribution energies, batteries, and appliances with DC power. This new DC energy system not only reduces the environment load and improves energy efficiency but also forms a community energy system that can become independent from utility grids and resistant to natural disasters. We have found that compared with AC power supply, the DC system, which uses power generated by solar panels as is, decreases CO₂ emission more than 10%.