著者

長濱 聖 砂川 武義

出版者

日本理科教育学会近畿支部大会実行委員会

雑誌

日本理科教育学会近畿支部大会(大阪大会)発表要旨集

巻号頁・発行日

vol.2011, 2011

著者

泉 佳伸 松尾 陽一郎 山野 直樹 砂川 武義 小嶋 崇夫

出版者

福井大学

雑誌

基盤研究(C)

巻号頁・発行日

2012-04-01

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マイクロ波技術を使ってこれまで困難だと考えられてきた水溶液系のDNAの評価を可能にした。具体的には、プラスミドDNAの鎖切断に伴う大きな構造変化とそれによる誘電率変化を、空洞共振器の共振周波数変化等で検出し、精度や再現性の向上のために環境の影響を低減させた。酵素で2本鎖切断させたDNAと切断前のDNAで測定値に違いが得られた。この技術を用いて、放射線被曝線量評価手法に応用できる可能性を見出した。

著者

砂川 武義 Lipchitz Adam Harvel Glenn Glenn Harvel

出版者

福井工業大学

雑誌

福井工業大学研究紀要 Memoirs of Fukui University of Technology (ISSN:18844456)

巻号頁・発行日

no.43, pp.374-379, 2013

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Liquid metal cooled reactors are currently one design option being considered as the next generation of power production by the Generation-IV international forum for the development of nuclear power plant designs. Currently, Russia, India, China, France, South Korea, and Japan are actively pursuing liquid metal cooled reactor concepts. The liquid metal coolants being considered for these designs are sodium, lead and lead-bismuth eutectic; these designs utilize reactive and toxic materials at temperatures up to 800℃for nuclear power plant operations. To simulate these systems with the actual coolant material requires a high level of safety systems. Therefore, a less toxic and less reactive liquid metal that can be used to simulate liquid metal cooled flows will allow for a greater number of investigations and experimentation of liquid metal flow with regards to the field of thermal hydraulics. Good candidates for a liquid metal experimental fluid are alloys from the indium-bismuth-tin system such as Field's metal, which by weight percent is 51% indium, 32.5% bismuth and 16.5% tin and possesses a melting temperature of 60℃. However, the thermodynamic properties of Field's metal and similar alloys in their liquid state are not well described in literature, especially for the temperature range for thermal hydraulic applications. Accurate knowledge of the thermodynamic properties of a coolant is essential for understanding the physical phenomena associated with the flow of fluids. This work experimentally measures the specific heat of the indium-bismuth-tin tertiary system and analyzes the results to determine if the thermodynamic properties of the system are desirable for experimental modeling applications.