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Journal Articles

Radioactive Cs in the severely contaminated soils near the Fukushima Daiichi Nuclear Power Plant

Kaneko, Makoto*; Iwata, Hajime; Shiotsu, Hiroyuki; Masaki, Shota*; Kawamoto, Yuji*; Yamasaki, Shinya*; Nakamatsu, Yuki*; Imoto, Jumpei*; Furuki, Genki*; Ochiai, Asumi*; et al.

Frontiers in Energy Research (Internet), 3, p.37_1 - 37_10, 2015/09

The mobility of the aggregates of submicron-sized sheet aluminosilicate in the surface environment is a key factor controlling the current Cs migration in Fukushima.

Oral presentation

An archaeological analog for long-term interaction between iron and glass

Mitsui, Seiichiro; Yoshikawa, Hideki; Matsui, Toshiya*; Kaneko, Makoto*; Nakamatsu, Yuki*; Utsunomiya, Satoshi*

no journal, , 

Engineered barrier system for geological disposal of high level nuclear waste in Japan consists of vitrified waste, metal overpack and clay buffer material. Although the overpack and the buffer material are designed to prevent the release of radionuclides from the vitrified waste, some experimental studies have shown that these components can promote glass dissolution. To gain insight in the long-term behavior of the vitrified waste at the glass-iron interface in the geological repository conditions, we studied sand contacted with iron cannon retrieved from Kaiyo Maru, a warship of the Tokugawa Shogunate that sank off the coast of Esashi in Hokkaido, 1868, as an archaeological analog. In this paper, we discuss type of corrosion and alteration products characterized by microanalyses, such as transmission electron microscope, and clogging of sand voids analyzed by a micro-focus X-ray computed tomography.

Oral presentation

Mechanism and crystallochemical signature of nano-particle formation by microorganisms

Shiotsu, Hiroyuki; Giang, M.*; Nakamatsu, Yuki*; Onuki, Toshihiko; Utsunomiya, Satoshi*

no journal, , 

Oral presentation

Mechanism and crystallochemical signature of nano-particles formation by microorganisms

Shiotsu, Hiroyuki; Jiang, M.*; Nakamatsu, Yuki*; Onuki, Toshihiko; Utsunomiya, Satoshi*

no journal, , 

no abstracts in English

Oral presentation

Formation of rare earth phosphate nano-particles by microorganisms

Shiotsu, Hiroyuki; Jiang, M.*; Nakamatsu, Yuki*; Onuki, Toshihiko; Utsunomiya, Satoshi*

no journal, , 

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