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Journal Articles

Pyroelectric power generation from the waste heat of automotive exhaust gas

Kim, J.*; Yamanaka, Satoru*; Murayama, Ichiro*; Kato, Takanori*; Sakamoto, Tomokazu*; Kawasaki, Takuro; Fukuda, Tatsuo; Sekino, Toru*; Nakayama, Tadachika*; Takeda, Masatoshi*; et al.

Sustainable Energy & Fuels (Internet), 4(3), p.1143 - 1149, 2020/03

 Times Cited Count:2 Percentile:32.54(Chemistry, Physical)

Journal Articles

Temperature stability of PIN-PMN-PT ternary ceramics during pyroelectric power generation

Moro, Takuya*; Kim, J.*; Yamanaka, Satoru*; Murayama, Ichiro*; Kato, Takanori*; Nakayama, Tadachika*; Takeda, Masatoshi*; Yamada, Noboru*; Nishihata, Yasuo; Fukuda, Tatsuo; et al.

Journal of Alloys and Compounds, 768, p.22 - 27, 2018/11

 Times Cited Count:7 Percentile:35.32(Chemistry, Physical)

Journal Articles

Sulfate complexation of element 104, Rf, in H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solution

Li, Z.*; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Kikuchi, Takahiro; Nagame, Yuichiro; Sch$"a$del, M.; Pershina, V.*; et al.

Radiochimica Acta, 100(3), p.157 - 164, 2012/03

 Times Cited Count:9 Percentile:34.41(Chemistry, Inorganic & Nuclear)

Oral presentation

Research on transportation of chemical compounds after gas phase chemistry

Murayama, Hiroshi*; Goto, Shinichi*; Kudo, Hisaaki*; Tsukada, Kazuaki; Asai, Masato; Toyoshima, Atsushi; Sato, Tetsuya; Nagame, Yuichiro

no journal, , 

no abstracts in English

Oral presentation

Sulfate complexation of element 104, Rf, in H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solution ([H$$^{+}$$] = 1.0 M)

Li, Z.; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Kikuchi, Takahiro; Sch$"a$del, M.*; Nagame, Yuichiro; Liang, X. H.*; et al.

no journal, , 

Cation-exchange behavior of $$^{261}$$Rf (T$$_{1/2}$$ = 78 s) produced in the $$^{248}$$Cm($$^{18}$$O, 5n) reaction was studied on a "one-atom-at-a-time" scale in H$$_{2}$$SO$$_{4}$$ (0.15-0.69 M)/HNO$$_{3}$$ mixed solutions ([H$$^{+}$$] = 1.0 M) using an automated ion-exchange separation apparatus coupled with the detection system for alpha-spectroscopy. It was found that adsorption probability (%ads) of $$^{261}$$Rf on cation-exchange resin decreases with increasing [HSO$$_{4}$$$$^{-}$$], showing a successive formation of its sulfate complexes. Rf exhibited much weaker formation of the complexes than the lighter homologues Zr and Hf, which is qualitatively in good agreement with theoretical calculations including relativistic effects.

Oral presentation

Research on gas-phase chemistry for chloride of group-4 elements

Murayama, Hiroshi*; Kojima, Takayuki*; Murakami, Masashi*; Goto, Shinichi*; Kudo, Hisaaki*; Tsukada, Kazuaki; Asai, Masato; Sato, Tetsuya; Sato, Nozomi; Nagame, Yuichiro

no journal, , 

For investigation of chemical properties of superheavy element Rf, we have developed an on-line isothermal gas chromatographic apparatus. We performed to optimize experimental conditions for chemical separation and observe on-line isothermal gas chromatographic behavior of volatile chloride compounds of group-4 elements Zr and Hf. The observed overall efficiency which include transportation from a target chamber to the chemical apparatus, chemical efficiency and transportation from the apparatus to a detection site is about 10%. The isothermal gas chromatographic behavior of Zr and Hf were measured precisely.

Oral presentation

Cation-exchange behavior of element 104, Rf, in H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solution ([H$$^{+}$$] = 1.0 M)

Li, Z.; Toyoshima, Atsushi; Asai, Masato; Tsukada, Kazuaki; Sato, Tetsuya; Sato, Nozomi; Sch$"a$del, M.*; Nagame, Yuichiro; Liang, X. H.*; Kasamatsu, Yoshitaka*; et al.

no journal, , 

Cation-exchange behavior of $$^{261}$$Rf (T$$_{1/2}$$ = 78 s) produced in the $$^{248}$$Cm($$^{18}$$O,5n) reaction was studied on a "one-atom-at-a-time" scale in 0.15-0.69 M H$$_{2}$$SO$$_{4}$$/HNO$$_{3}$$ mixed solutions ([H$$^{+}$$] = 1.0 M) using an automated ion-exchange separation apparatus coupled with a detection system for alpha-spectroscopy (AIDA). It was found that adsorption probabilities (%ads) of Rf on the cation-exchange resin decrease with increasing [HSO$$_{4}$$$$^{-}$$], showing successive formation of Rf sulfate complexes. Rf exhibits a weaker complex formation than the lighter homologues Zr and Hf.

Oral presentation

Analysis of technical problems on decommissioning work-site activities

Tanabe, Kazuhiro*; Yanagihara, Satoshi*; Iguchi, Yukihiro; Takiya, Hiroaki; Narikawa, Isao*; Kobashi, Hiroaki*; Aoyama, Yoshiharu*; Iida, Keiichi*; Yanagida, Akihiro*; Murayama, Kazunari*; et al.

no journal, , 

In order to make safer and more rational efforts possible for a decommissioning project that is about to begin in full swing, we organized our experience, achievements and knowledge, including maintenance and dismantling work in the plant, and evaluated basic issues for decommissioning.

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