First measurement of electron temperature from signal ratios in a double-pass Thomson scattering system

Tojo, Hiroshi; Ejiri, Akira*; Hiratsuka, Junichi*; Yamaguchi, Takashi*; Takase, Yuichi*; Itami, Kiyoshi; Hatae, Takaki

Review of Scientific Instruments, 83(2), p.023507_1 - 023507_4, 2012/02

https://doi.org/10.1063/1.3685612

Successful BNCT for patients with cutaneous and mucosal melanomas; Report of 4 cases

Morita, Norimasa*; Hiratsuka, Junichi*; Kuwabara, Chiaki*; Aihara, Teruhito*; Ono, Koji*; Fukuda, Hiroshi*; Kumada, Hiroaki; Harada, Tamotsu*; Imajo, Yoshinari*

Proceedings of 12th International Congress on Neutron Capture Therapy (ICNCT-12), p.18 - 20, 2006/12

Since 2003, group of Kawasaki Medical School has conducted BNCT clinical trials on melanomas at the Kyoto University Research Reactor (KUR) and Japan Research Reactor No.4 (JRR-4). We report 4 patients given BNCT for malignant melanomas, 2 with superficial spreading types on the heel, 1 with mucosal melanoma in the nasal cavity, and 1with a melanoma on the vulva and in the vagina. Although 2 patients experienced normal-tissue damage that exceeded the tolerance level, all the participants were cured within a few months of treatment. BNCT was shown to be a promising treatment for mucosal, as well as for cutaneous, melanomas.

Decomposition of -nonylphenols in water and elimination of their estrogen activities by Co -ray irradiation

Kimura, Atsushi; Taguchi, Mitsumasa; Otani, Yoshimi*; Takigami, Machiko; Shimada, Yoshitaka*; Kojima, Takuji; Hiratsuka, Hiroshi*; Namba, Hideki

Radiation Physics and Chemistry, 75(1), p.61 - 69, 2006/01

https://doi.org/10.1016/j.radphyschem.2005.05.016

Decomposition of -Nonylphenols (NPs) in water at 1 mol dm was decreased exponentially with absorbed dose when NPs were irradiated by Co-rays. Two products having molecular weight of 236, presumably OH adducts of NPs, were detected by LC-MS analyses. The elimination of estrogen activity of aqueous NPs solution including such irradiation products at 5000 Gy (J kg) was confirmed by the yeast two hybrid assay. These results should expand the application of ionizing radiation to the treatment of NPs.

Radiation-induced decomposition of trace amounts of 17 -estradiol in water

Kimura, Atsushi; Taguchi, Mitsumasa; Arai, Hidehiko*; Hiratsuka, Hiroshi*; Namba, Hideki; Kojima, Takuji

Radiation Physics and Chemistry, 69(4), p.295 - 301, 2004/03

https://doi.org/10.1016/S0969-806X(03)00470-5

no abstracts in English

Development of multilayer piezoelectric actuator valve for JT-60

Miyo, Yasuhiko; Hiratsuka, Hajime; Masui, Hiroshi*; Hosogane, Nobuyuki; Miya, Naoyuki

JAERI-Tech 2001-070, 33 Pages, 2001/11

JAERI-Tech-2001-070.pdf:3.02MB

In order to improve the gas injection valve used for the operation of JT-60, a new type of valve (multilayer piezoelectric actuator valve) was developed .The conventional valve (bimorph piezoelectric actuator valve) has been used for 15 years from the beginning of experimental operation in April, 1985. Consequently, it came to be hard to keep the performance of the valve as a gas injector because its driving source, piezoelectric element, has deteriorated by long time use.In the design, it is required:(1) to be hard structure for sheet leak,(2) to allow a repair work at atmosphere side without an air vent of the vacuumvessel,(3) to be more smaller and lighter compaired with the conventional one,(4) to have a high maintenance efficiency. The new valve developed was examined with various tests such as gas flow characteristic test, high magnetic field proof test, high temperature proof test and gas flow rate test for aged deterioration. As a result, the valve with desired performance for JT-60 could be obtained.

Photochemical reaction intermediates of benzyl chloride in condensed phase

Hiratsuka, Hiroshi*; Okamoto, Takahiro*; Kuroda, Satoshi*; Okutsu, Tetsuo*; Maeoka, Hironori*; Taguchi, Mitsumasa; Yoshinaga, Tetsutaro*

Research on Chemical Intermediates, 27(1-2), p.137 - 153, 2001/02

https://doi.org/10.1163/156856701745032

no abstracts in English

Irrdiation effect of 207-MeV C ion on phenylalamine aqueous solution

Taguchi, Mitsumasa; Xu, Y.; Kobayashi, Yasuhiko; Moriyama, Masahiro*; Hiratsuka, Hiroshi*

JAERI-Review 99-025, TIARA Annual Report 1998, p.25 - 27, 1999/10

no abstracts in English

Properties of thin boron coatings formed during deuterated-boronization in JT-60

Yagyu, Junichi; Ogiwara, Norio; Saido, Masahiro; Okabe, Tomokazu; Hiratsuka, Hajime; Miyo, Yasuhiko; Naramoto, Hiroshi; Yamamoto, Shunya; Takeshita, Hidefumi; Aoki, Yasushi; et al.

Journal of Nuclear Materials, 241-243, p.579 - 584, 1997/00

https://doi.org/10.1016/S0022-3115(97)80103-1

no abstracts in English

Decomposition of endocrine disrupting chemicals in real wastewater by Co- ray irradiation

Taguchi, Mitsumasa; Kimura, Atsushi; Otani, Yoshimi*; Shimada, Yoshitaka*; Hiratsuka, Hiroshi*; Namba, Hideki; Kojima, Takuji

no journal, , 

no abstracts in English

Study on the treatment of endocrine disrupting chemicals in wastewater by ionizing radiation

Kimura, Atsushi; Taguchi, Mitsumasa; Otani, Yoshimi*; Hiratsuka, Hiroshi*; Kojima, Takuji; Hirota, Koichi

no journal, , 

no abstracts in English