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Journal Articles

Development of novel ion-exchange membranes for electrodialysis of seawater by electron-beam-induced graft polymerization, 4; Polymeric structures of cation-exchange membranes based on nylon-6 film

Miyazawa, Tadashi*; Asari, Yuki*; Miyoshi, Kazuyoshi*; Umeno, Daisuke*; Saito, Kyoichi*; Nagatani, Takeshi*; Yoshikawa, Naohito*; Motokawa, Ryuhei; Koizumi, Satoshi*

Nippon Kaisui Gakkai-Shi, 64(6), p.360 - 365, 2010/12

Journal Articles

High-pressure synthesis and physical properties of new iron (nickel)-based superconductors

Shirage, P. M.*; Miyazawa, Kiichi*; Ishikado, Motoyuki; Kiho, Kunihiro*; Lee, C.-H.*; Takeshita, Nao*; Matsuhata, Hirofumi*; Kumai, Reiji*; Tomioka, Yasuhide*; Ito, Toshimitsu*; et al.

Physica C, 469(9-12), p.355 - 369, 2009/06

 Times Cited Count:35 Percentile:19.27(Physics, Applied)

We have utilized a high-pressure (HP) technique to synthesize a series of newly-discovered iron (nickel)-based superconductors. The effect of (O)-deficiency, variation of $$Ln$$ ions, and the external pressure on $$T$$$$_{rm c}$$ are examined. All the experimental data indicate strong correlation between the crystal structure and the superconductivity of the oxypnictide superconductors. Upper critical field measurement on single crystalline sample of PrFeAsO$$_{1-y}$$ shows the superconducting anisotropy of 5, which is smaller than cuprates. We also demonstrate that HP technique is applicable for the so-called "122" systems.

Journal Articles

Experience on return of research reactor spent fuels in Japan

Sagawa, Hisashi; Koda, Nobuyuki; Hanawa, Nobuhiro; Maruo, Takeshi; Miyazawa, Masataka; Unesaki, Hironobu*; Nakagome, Yoshihiro*

IAEA-TECDOC-1593, p.121 - 128, 2008/06

In Japan, 1,712 of Research Reactor Spent Nuclear fuels (RRSNFs) have been transported to the US successfully since the receipt in accordance with the foreign research reactor spent nuclear fuel acceptance policy started in 1996. Especially, Japan Atomic Energy Agency (JAEA) carried out shipment to the US of eight times and of 1,283 fuel elements in total. This paper describes experiences of RRSNF transportation to the US in Japan.

Journal Articles

Enhanced annealing of the Z$$_{1/2}$$ defect in 4H-SiC epilayers

Storasta, L.*; Tsuchida, Hidekazu*; Miyazawa, Tetsuya*; Oshima, Takeshi

Journal of Applied Physics, 103(1), p.013705_1 - 013705_7, 2008/01

 Times Cited Count:76 Percentile:7.25(Physics, Applied)

A carbon-implantation/annealing method for annealing of defect Z$$_{1/2}$$ in thick 4H-SiC epilayers was studied. Different implantation doses and annealing temperatures were examined to find the optimum conditions for annealing of Z$$_{1/2}$$. As the result, Z$$_{1/2}$$ defects in epilayer with 100 $$mu$$m were annealed by implanting 300 nm carbon atoms at a concentration of 2$$times$$10$$^{19}$$/cm$$^{3}$$ and sbsequent annealing at 1800 $$^{circ}$$C. By this treatment, the carrier lifetime increased from less than 200 ns to over 1 $$mu$$s at room temperature.

Oral presentation

Raman and TEM studies of heat-treated La fullerene soot

Yamamoto, Kazunori; Shamoto, Shinichi; Akasaka, Takeshi*; Wakahara, Takatsugu*; Miyazawa, Kunichi*

no journal, , 

no abstracts in English

Oral presentation

Absorption and translocation of radioactive cesium in Cypress planted trees

Hirai, Keizo*; Komatsu, Masafumi*; Akama, Akio*; Noguchi, Ryotaro*; Nagakura, Junko*; Ohashi, Shinta*; Saito, Tetsu*; Kawasaki, Tatsuro*; Yazaki, Kenichi*; Ikeda, Shigeto*; et al.

no journal, , 

no abstracts in English

Oral presentation

Effect of neutron irradiation on rhenium cluster formation in tungsten and tungsten rhenium alloys and Introduction of the research for aging management of JAEA

Hwang, T.; Hasegawa, Akira*; Tomura, Keiko*; Ebisawa, Naoki*; Toyama, Takeshi*; Nagai, Yasuyoshi*; Fukuda, Makoto*; Miyazawa, Takeshi*; Tanaka, Teruya*; Nogami, Shuhei*

no journal, , 

7 (Records 1-7 displayed on this page)
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