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Journal Articles

Substrate recognition mechanism of a glycosyltrehalose trehalohydrolase from ${it sulfolobus solfataricus}$ KM1

Okazaki, Nobuo; Tamada, Taro; Feese, M. D.*; Kato, Masaru*; Miura, Yutaka*; Komeda, Toshihiro*; Kobayashi, Kazuo*; Kondo, Keiji*; Blaber, M.*; Kuroki, Ryota

Protein Science, 21(4), p.539 - 552, 2012/04

 Times Cited Count:3 Percentile:7.91(Biochemistry & Molecular Biology)

Journal Articles

M$"{o}$ssbauer study on the SmFe$$_2$$ hydride through $$^{149}$$Sm and $$^{57}$$Fe

Masuda, Ryo; Mitsui, Takaya; Ito, Keiji*; Kobayashi, Yasuhiro*; Kitao, Shinji*; Seto, Makoto

Journal of the Physical Society of Japan, 81(3), p.034714_1 - 034714_6, 2012/03

 Times Cited Count:3 Percentile:28.92(Physics, Multidisciplinary)

Journal Articles

Microbeam irradiation facilities for radiobiology in Japan and China

Kobayashi, Yasuhiko; Funayama, Tomoo; Hamada, Nobuyuki*; Sakashita, Tetsuya; Konishi, Teruaki*; Imaseki, Hitoshi*; Yasuda, Keisuke*; Hatashita, Masanori*; Takagi, Keiichi*; Hatori, Satoshi*; et al.

Journal of Radiation Research, 50(Suppl.A), p.A29 - A47, 2009/03

 Times Cited Count:34 Percentile:72.55(Biology)

Journal Articles

Burn control simulation experiments in JT-60U

Shimomura, Koji*; Takenaga, Hidenobu; Tsutsui, Hiroaki*; Mimata, Hideyuki*; Iio, Shunji*; Miura, Yukitoshi; Tani, Keiji; Kubo, Hirotaka; Sakamoto, Yoshiteru; Hiratsuka, Hajime; et al.

Fusion Engineering and Design, 82(5-14), p.953 - 960, 2007/10

 Times Cited Count:3 Percentile:26.87(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Induction of mutation by the ion beam irradiation to the calluses of ${it Lilium}$ $$times$$ ${it formolongi}$ hort (${it cv. White Aga.}$)

Kondo, Masayoshi*; Ogata, Keiji*; Hase, Yoshihiro; Yokota, Yuichiro; Narumi, Issei; Kobayashi, Hitoshi*

JAEA-Review 2006-042, JAEA Takasaki Annual Report 2005, P. 89, 2007/02

no abstracts in English

Journal Articles

Spectroscopic study of hydrogen particle behavior in attached and detached divertor plasmas of JT-60U

Kubo, Hirotaka; Takenaga, Hidenobu; Sawada, Keiji*; Nakano, Tomohide; Kobayashi, Shinji*; Higashijima, Satoru; Asakura, Nobuyuki; Shimizu, Katsuhiro

Journal of Nuclear Materials, 337-339, p.161 - 165, 2005/03

 Times Cited Count:15 Percentile:72.28(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

Divertor spectroscopy with molecular transport

Kubo, Hirotaka; Takenaga, Hidenobu; Nakano, Tomohide; Higashijima, Satoru; Shimizu, Katsuhiro; Sawada, Keiji*; Kobayashi, Shinji*; JT-60 Team

Nuclear Fusion Research; Springer Series in Chemical Physics, Vol.78, p.121 - 134, 2004/11

no abstracts in English

JAEA Reports

Experimental study on accelerator driven subcritical reactor, JAERI's nuclear research promotion program, H12-031 (Contract research)

Shiroya, Seiji*; Misawa, Tsuyoshi*; Unesaki, Hironobu*; Ichihara, Chihiro*; Kobayashi, Keiji*; Nakamura, Hiroshi*; Shin, Kazuo*; Imanishi, Nobutsugu*; Kanazawa, Satoshi*; Mori, Takamasa

JAERI-Tech 2004-025, 93 Pages, 2004/03

JAERI-Tech-2004-025.pdf:6.69MB

In view of the future plan of Research Reactor Institute, Kyoto University, the present study consisted of (1) the transmission experiments of high energy neutrons through materials, (2) experimental simulation of ADSR using the Kyoto University Critical Assembly(KUCA), and (3) conceptual neutronics design study on KUR type ADSR using the MCNP-X code. Through the present study, valuable knowledge on the basic nuclear characteristics of ADSR, which is indispensable to promote the study on ADSR, was obtained both theoretically and experimentally. For the realization of ADSR, it is considered to be necessary to accumulate results of research steadily. For this purpose, it is inevitable (1) to compile the more precise nuclear data for the wide energy range, (2) to establish experimental techniques for reactor physics study on ADSR including subcriticality measurement and absolute neutron flux measurement, and (3) to develop neutronics calculation tools which take into account the neutron generation process by the spallation reaction and the delayed neutron behavior.

JAEA Reports

Analytical Assessment of Full-Scale Demonstration of Sealing Technique in Canadian Geological Disposal Facility

Toida, Masaru*; Sasakura, Takeshi*; Atsumi, Hiroyuki*; Suyama, Yasuhiro*; Kobayashi, Ichizo*; Kawabata, Junichi*; Ito, Keijiro*

JNC TJ8400 2003-088, 254 Pages, 2004/02

JNC-TJ8400-2003-088.pdf:9.59MB

To establish sealing technique suitable for geological environmental conditions of Japan, it is necessary to obtain data related with this sealing function through laboratory tests and in-situ tests. It also is necessary to put these data to practical use and to establish the estimating method of the sealing technique. Tunnnel sealing experiment, which has been carried out as a joint research between JNC and AECL at URL of AECL Canada, is arriving the final stage and fundamental data relating with the sealing function has almost obtained. This report deals with the total data processing and interpretation of the sealing test, as well as the numerical analysis and interpretation on tracer test results. Concrete plans for the disassembling and sampling of clay and concrete plugs, which is important for the evaluation of function of the sealing system, is also discussed.

JAEA Reports

Experimental comparison of calibration methods for measurement of reaction rate by using fission foils

Sakurai, Takeshi; ; Obu, Makoto; ; Kobayashi, Keiji*; Unesaki, Hironobu*

JAERI-M 93-153, 50 Pages, 1993/08

JAERI-M-93-153.pdf:1.31MB

no abstracts in English

Journal Articles

Simple determination of low power on reflected reactors using Feynman-$$alpha$$ experiment

Okajima, Shigeaki; Narita, M.*; Kobayashi, Keiji*

Annals of Nuclear Energy, 14(12), p.673 - 676, 1987/12

 Times Cited Count:2 Percentile:41.13(Nuclear Science & Technology)

When a low power meter for a reactor is calibrated by using the Feynman-$$alpha$$ methode, the absolute power is obtained by the product of the power deduced from the one-point reactor formula and the ${it g}$-factor which was introduced as the spatila correction factor on the Rossi-$$alpha$$ measurement. In this paper, for the purpose of ezperimental usage, formulae of the ${it g}$-factor for the different geometries are derived by one speed approximation and its characteristics are systematically surveyed. A simple formula of the ${it g}$-factor for a spherical core is presented and applied. This formula can estimate the value of the ${it g}$-factor with appropriate accuracy.

JAEA Reports

Engineering examination on the recovery of TBP from solvent waste for waste treatment plant

Itakura, Keiji*; Kuroda, Yasuo*; Kan, Yoshihiko*; Kobayashi, Shinichiro*; Ogi, Katsumi*; Nishijima, Naotaka*; Sato, Teruyoshi*

PNC TJ121 79-03, 111 Pages, 1979/02

PNC-TJ121-79-03.pdf:2.61MB

no abstracts in English

Oral presentation

Effect of ion beam irradiation on the callus growth of ${it Liliaceae}$ plant

Kondo, Masayoshi*; Ogata, Keiji*; Kobayashi, Hitoshi*; Hase, Yoshihiro; Yokota, Yuichiro

no journal, , 

no abstracts in English

Oral presentation

Numerical analysis for burn control simulation in JT-60U

Shimomura, Koji*; Takenaga, Hidenobu; Tsutsui, Hiroaki*; Mimata, Hideyuki*; Iio, Shunji*; Miura, Yukitoshi; Tani, Keiji; Kubo, Hirotaka; Hiratsuka, Hajime; Ichige, Hisashi; et al.

no journal, , 

no abstracts in English

Oral presentation

$$^{149}$$Sm synchrotron M$"{o}$ssbauer studies on hydrides of rare-earth-iron compounds

Masuda, Ryo; Mitsui, Takaya; Ito, Keiji*; Kobayashi, Yasuhiro*; Kitao, Shinji*; Seto, Makoto

no journal, , 

no abstracts in English

Oral presentation

$$^{149}$$Sm synchrotron M${"o}$ssbauer studies on hydrides of rare-earth-iron compounds SmFe$$_2$$

Masuda, Ryo; Mitsui, Takaya; Ito, Keiji*; Kobayashi, Yasuhiro*; Kitao, Shinji*; Seto, Makoto

no journal, , 

no abstracts in English

Oral presentation

Crystal structures of two coupled enzymes accomplishing high-efficient biochemical synthesis of trehalose

Okazaki, Nobuo; Tamada, Taro; Miura, Yutaka*; Feese, M. D.*; Kato, Masaru*; Komeda, Toshihiro*; Takehara, Kyoko*; Kobayashi, Kazuo*; Kondo, Keiji*; Kuroki, Ryota

no journal, , 

The crystal structure of glycosyltrehalose synthase (GTSase) from the hyperthermophilic archaeum Sulfolobus shibatae DSM5389 has been determined to 2.3 A resolution by X-ray crystallography. GTSase converts the glucosidic bond between the last two glucose residues of amylose from an alpha-1,4 bond to an alpha-1,1 bond, making a non-reducing glycosyl trehaloside in the first step of the biosynthesis of trehalose. The structure of GTSase can be divided into five domains. The central domain has the (beta/alpha)8 barrel fold which is conserved in the alpha-amylase family as the catalytic domain. Three invariant catalytic carboxylic amino acids in the alpha-amylase family are also found in GTSase at positions Asp241, Glu269 and Asp460 in the (beta/alpha)8 domain. Our previous study with KM1-GTSase has been shown that the maltooligosaccharides are converted to glycosyltrehalose by an intramolecular transglycosylation mechanism.

Oral presentation

M$"{o}$ssbauer study on the hydrides of C15 RFe$$_2$$ (R=Sm,Gd) compounds

Masuda, Ryo; Mitsui, Takaya; Ito, Keiji*; Sakaki, Koji*; Enoki, Hirotoshi*; Nakamura, Yumiko*; Kobayashi, Yasuhiro*; Kitao, Shinji*; Seto, Makoto

no journal, , 

Oral presentation

Tanpopo Working Group report; Space exposure of microbes and organic materials

Yokobori, Shinichi*; Kobayashi, Kensei*; Mita, Hajime*; Yabuta, Hikaru*; Nakagawa, Kazumichi*; Narumi, Issei; Hayashi, Nobuhiro*; Tomita, Kaori*; Kawaguchi, Yuko*; Shimizu, Yasuyuki*; et al.

no journal, , 

no abstracts in English

Oral presentation

Live imaging of cells exposed to X-ray microbeam

Yokoya, Akinari; Narita, Ayumi; Kaminaga, Kiichi; Kanari, Yukiko; Sakamoto, Yuka; Noguchi, Miho; Usami, Noriko*; Kobayashi, Katsumi*; Fujii, Kentaro; Suzuki, Keiji*

no journal, , 

no abstracts in English

22 (Records 1-20 displayed on this page)