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RISS 인기검색어
- 검색키워드
- 저자 : Go Kumasaka (검색결과 2 건)
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Electrical properties of fuel cell based on DNA film
Yasumitsu Matsuo,Go Kumasaka,Junko Hatori,Keiko Saito,Seiichiro Ikehata 한국물리학회 2006 Current Applied Physics Vol.6 No.3
We have investigated the electrical properties of a fuel cell based on DNA lm. It is found that open-circuit voltage appears in theDNA lm, optimum condition exists. From the analyses of the frequency dependence of electrical conductivity, it is also found that elec-trical conductivity consists of the component of electrical conductivity caused by the dielectric dispersion, and the component of DCelectrical conductivity. Furthermore, we have found that the ratio,d, of DC conductivity to the component caused by dielectric disper-sion becomes large in the middle-humidity region between 17% and 60% and reaches a maximum at approximately 57% where open-loss are achieved. From these results, it is deduced that optimum conduction of the fuel cell based on DNA lm is determined bynot only the proton conductivity but also by the dielectric loss accompanied by the dielectric dispersion.
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Beamline Automation of RIKEN Structural Genomics Beamlines
Ida, Koh,Yamamoto, Masaki,Kumasaka, Takashi,Ueno, Go,Kanda, Hiroyuki,Miyano, Masashi,Ishikawa, Tetsuya Korean Society of Photoscience 2002 Journal of Photosciences Vol.9 No.2
RIKEN Structural Genomics Beamlines have been constructed for the crystallographic analysis in the structural genomics research at synchrotron radiation facility SPring-8. Synchrotron radiation accelerates the crystallographic analysis of protein structure. The target of the research and development is focused on the automatic beamline operation to maximize beamline efficiency. We are developing the sample management system, which is composed of the sample auto-changer and the database system, for high-throughput data collection. The sample management system and the beamline operating system make it possible to execute automatic data collection without any operators. The beamlines will be ready for user operation in autumn 2002. The concept of automatic beamline operation and the present status of RIKEN Structural Genomics Beamlines will be presented.
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