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Oral presentation

Ultra-low Pt-loaded electrodes prepared by irradiation-induced reduction for application in fuel cells

Chen, J.; Asano, Masaharu; Maekawa, Yasunari

no journal, , 

To prepare a high performance catalyst layer with low platinum nano-particles loading, radiation-induced reduction of Pt ions in a mixture of carbon materials and water solution was carried out. Furthermore, the fuel cell performance of the catalyst layer prepared by the different conditions was investigated in detail.

Oral presentation

Intramolecular synergistic effect on ionic liquid extraction system with crownn ether bearing $$beta$$-diketone fragments

Shimojo, Kojiro; Okamura, Hiroyuki; Ikeda, Atsushi; Saito, Takumi*; Hirayama, Naoki*; Umetani, Shigeo*; Imura, Hisanori*; Naganawa, Hirochika

no journal, , 

no abstracts in English

Oral presentation

Development of swift, non-destructive, highly sensitive trace element analysis utilizing multiple $$gamma$$-ray detection method

Oshima, Masumi; Toh, Yosuke; Koizumi, Mitsuo; Kin, Tadahiro; Hara, Kaoru; Kimura, Atsushi; Furutaka, Kazuyoshi; Nakamura, Shoji; Murakami, Yukihiro*; Sushida, Kazuyoshi*; et al.

no journal, , 

A new trace element analysis method is proposed on the basis of multiple $$gamma$$-ray detection, which is two or higher fold $$gamma$$-ray coincidence method. We apply this method for prompt $$gamma$$-ray activation analysis (PGAA) and instrumental neutron activation analysis (INAA). The advantage of the methods consists of high energy resolution and high sensitivity. The principle of the multiple $$gamma$$-ray detection method and actual applications to cosmological chemistry, earth chemistry, environmental chemistry, etc, will be presented.

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