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Journal Articles

Analysis of relaxation times of radicals in irradiated black pepper using pulse-ESR and CW-ESR

Kameya, Hiromi*; Kikuchi, Masahiro; Todoriki, Setsuko*; Furuta, Masakazu*; Kobayashi, Yasuhiko; Hara, Hideyuki*; Shimoyama, Yuhei; Ukai, Mitsuko*

Shokuhin Shosha, 47(1), p.6 - 10, 2012/09

no abstracts in English

Journal Articles

Relaxation behaviors of free radicals from $$gamma$$-irradiated black pepper using pulsed EPR spectroscopy

Kameya, Hiromi*; Kikuchi, Masahiro; Hara, Hideyuki*; Furuta, Masakazu*; Todoriki, Setsuko*; Kobayashi, Yasuhiko; Ukai, Mitsuko*; Shimoyama, Yuhei

Applied Magnetic Resonance, 42(2), p.153 - 159, 2012/03

 Times Cited Count:5 Percentile:30.75(Physics, Atomic, Molecular & Chemical)

no abstracts in English

Journal Articles

Fabrication of nanowires by varying energy microbeam lithography using heavy ions at the TIARA

Kamiya, Tomihiro; Takano, Katsuyoshi; Ishii, Yasuyuki; Sato, Takahiro; Oikawa, Masakazu*; Okubo, Takeru; Haga, Junji*; Nishikawa, Hiroyuki*; Furuta, Yusuke*; Uchiya, Naoyuki*; et al.

Nuclear Instruments and Methods in Physics Research B, 267(12-13), p.2317 - 2320, 2009/06

 Times Cited Count:7 Percentile:47.15(Instruments & Instrumentation)

Journal Articles

Development of micromachining technology in ion microbeam system at TIARA, JAEA

Kamiya, Tomihiro; Nishikawa, Hiroyuki*; Sato, Takahiro; Haga, Junji; Oikawa, Masakazu*; Ishii, Yasuyuki; Okubo, Takeru; Uchiya, Naoyuki; Furuta, Yusuke*

Applied Radiation and Isotopes, 67(3), p.488 - 491, 2009/03

 Times Cited Count:4 Percentile:30.49(Chemistry, Inorganic & Nuclear)

Development of a mask-less ion beam lithography technique for fabricating micro- or nano-meter sized structures has been started at the microbeam systems in the ion accelerator facility of JAEA Takasaki (TIARA) in collaboration with Shibaura Institute of Technology. In order to obtain a high precision measure for microbeam size estimation and lens system optimization, or for improvement of spatial resolution down to 100 nm level, we applied this lithography technique itself combined with the electroplating process to make a Ni relief pattern as an optimum resolution standard to be used in secondary electron imaging. In this work, using this standard, the smallest beam size could be obtained. This paper also discuses on the scattering of ions in the materials influenced to the resolution using a Monte Carlo simulation code.

Journal Articles

Status of food irradiation in the world

Kume, Tamikazu*; Furuta, Masakazu*; Todoriki, Setsuko*; Uenoyama, Naoki*; Kobayashi, Yasuhiko

Radiation Physics and Chemistry, 78(3), p.222 - 226, 2009/03

 Times Cited Count:132 Percentile:99.42(Chemistry, Physical)

Journal Articles

Quantity and economic scale of food irradiation in the world

Kume, Tamikazu*; Furuta, Masakazu*; Todoriki, Setsuko*; Uenoyama, Naoki*; Kobayashi, Yasuhiko

Radioisotopes, 58(1), p.25 - 35, 2009/01

Journal Articles

Ni electroplating on a resist micro-machined by proton beam writing

Uchiya, Naoyuki*; Furuta, Yusuke*; Nishikawa, Hiroyuki*; Watanabe, Toru*; Haga, Junji; Sato, Takahiro; Oikawa, Masakazu; Ishii, Yasuyuki; Kamiya, Tomihiro

Microsystem Technologies, 14(9-11), p.1537 - 1540, 2008/10

 Times Cited Count:17 Percentile:64.34(Engineering, Electrical & Electronic)

Journal Articles

Highly polarized electrons from GaAs-GaAsP and InGaAs-AlGaAs strained-layer superlattice photocathodes

Nishitani, Tomohiro; Nakanishi, Tsutomu*; Yamamoto, Masahiro*; Okumi, Shoji*; Furuta, Fumio*; Miyamoto, Masaharu*; Kuwahara, Makoto*; Yamamoto, Naoto*; Naniwa, Kenichi*; Watanabe, Osamu*; et al.

Journal of Applied Physics, 97(9), p.094907_1 - 094907_6, 2005/05

 Times Cited Count:64 Percentile:87.31(Physics, Applied)

no abstracts in English

Journal Articles

Light dependency of resistance to ionizing radiation in ${it Euglena gracilis}$

Hayashi, Hirotaka; Narumi, Issei; Wada, Seiichi; Kikuchi, Masahiro; Furuta, Masakazu*; Uehara, Kaku*; Watanabe, Hiroshi*

Journal of Plant Physiology, 161(10), p.1101 - 1106, 2004/10

 Times Cited Count:10 Percentile:23.18(Plant Sciences)

The resistance of ${it Euglena gracilis}$ strains Z (wild type) and SM-ZK (chloroplast-deficient mutant) to ionizing radiation was investigated. The colony forming ability of ${it E. gracilis}$ strain Z was higher than that of strain SM-ZK after $$gamma$$-irradiation. For both strains, the resistance of light-grown cells was higher than that of dark-grown cells, suggesting that the light conditions during the culture contribute to the radiation resistance of ${it E. gracilis}$. The comet assay showed that the ability of rejoining DNA double-strand breaks (dsb) was much higher in the light-grown cells. These results suggest that ${it E. gracilis}$ possesses a light-induced repair system to cope with DNA dsb.

Journal Articles

Evaluation of the resistance of ${it Euglena gracilis}$ to ion beam radiation

Hayashi, Hirotaka*; Wada, Seiichi; Funayama, Tomoo; Narumi, Issei; Kobayashi, Yasuhiko; Watanabe, Hiroshi*; Furuta, Masakazu*; Uehara, Kaku*

Journal of Eukaryotic Microbiology, 51(3), p.321 - 324, 2004/06

 Times Cited Count:5 Percentile:6.62(Microbiology)

no abstracts in English

Oral presentation

Production of 3-D resit structures on silicon plates by a proton beam writing technique

Furuta, Yusuke*; Uchiya, Naoyuki*; Nishikawa, Hiroyuki*; Haga, Junji; Oikawa, Masakazu*; Sato, Takahiro; Ishii, Yasuyuki; Kamiya, Tomihiro

no journal, , 

no abstracts in English

Oral presentation

Micro-machining of resists by proton beam writing, 2; Fabrication of 3-D structures using a negative resist

Uchiya, Naoyuki; Furuta, Yusuke*; Nishikawa, Hiroyuki*; Haga, Junji; Sato, Takahiro; Oikawa, Masakazu*; Okubo, Takeru; Ishii, Yasuyuki; Kamiya, Tomihiro; Yamamoto, Shunya

no journal, , 

no abstracts in English

12 (Records 1-12 displayed on this page)
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