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Journal Articles

Impressions of the 3rd Joint Meeting of Japanese Society of Radiation Safety Management and Japan Health Physics Society

Watanabe, Yuki; Tsuji, Tomoya; Hirota, Seiko*; Hokama, Tomonori; Nakajima, Junya; Tsujiguchi, Takakiyo*; Kimura, Tatsuki*; Koike, Hiromi*; Nakamura, Kaori*; Kuwata, Haruka*; et al.

Hoken Butsuri (Internet), 57(1), p.54 - 64, 2022/03

no abstracts in English

Journal Articles

Report on social communication activities of Young Researchers Association and Students Association of JHPS; Chiba-shi Science Festa

Yamada, Ryohei; Kono, Takahiko; Nakajima, Junya; Hirouchi, Jun; Tsuji, Tomoya; Umeda, Masayuki; Igarashi, Yu*; Koike, Hiromi*

Hoken Butsuri (Internet), 56(1), p.32 - 38, 2021/03

no abstracts in English

Journal Articles

Highly durable carbon-supported Pt catalysts prepared by hydrosilane-assisted nanoparticle deposition and surface functionalization

Saito, Akinori*; Tsuji, Hiromi*; Shimoyama, Iwao; Shimizu, Kenichi*; Nishina, Yuta*

Chemical Communications, 51(27), p.5883 - 5886, 2015/04

 Times Cited Count:13 Percentile:38.63(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

Development of a new continuous dissolution apparatus with a hydrophobic membrane for superheavy element chemistry

Oe, Kazuhiro*; Attallah, M. F.*; Asai, Masato; Goto, Naoya*; Gupta, N. S.*; Haba, Hiromitsu*; Huang, M.*; Kanaya, Jumpei*; Kaneya, Yusuke*; Kasamatsu, Yoshitaka*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 303(2), p.1317 - 1320, 2015/02

 Times Cited Count:10 Percentile:61.82(Chemistry, Analytical)

A new technique for continuous dissolution of nuclear reaction products transported by a gas-jet system was developed for superheavy element (SHE) chemistry. In this technique, a hydrophobic membrane is utilized to separate an aqueous phase from the gas phase. With this technique, the dissolution efficiencies of short-lived radionuclides of $$^{91m,93m}$$Mo and $$^{176}$$W were measured. Yields of more than 80% were observed for short-lived radionuclides at aqueous-phase flow rates of 0.1-0.4 mL/s. The gas flow-rate had no influence on the dissolution efficiency within the studied flow range of 1.0-2.0 L/min. These results show that this technique is applicable for on-line chemical studies of SHEs in the liquid phase.

Journal Articles

Measurement of the Md$$^{3+}$$/Md$$^{2+}$$ reduction potential studied with flow electrolytic chromatography

Toyoshima, Atsushi; Li, Z.*; Asai, Masato; Sato, Nozomi; Sato, Tetsuya; Kikuchi, Takahiro; Kaneya, Yusuke; Kitatsuji, Yoshihiro; Tsukada, Kazuaki; Nagame, Yuichiro; et al.

Inorganic Chemistry, 52(21), p.12311 - 12313, 2013/11

 Times Cited Count:7 Percentile:30.79(Chemistry, Inorganic & Nuclear)

The reduction behavior of mendelevium (Md) was studied using a flow electrolytic chromatography apparatus. By applying appropriate potentials on the chromatography column, the more stable Md$$^{3+}$$ is reduced to Md$$^{2+}$$. The reduction potential of the Md$$^{3+}$$ + e$$^{-}$$ $$rightarrow$$ Md$$^{2+}$$ couple was determined to be -0.16$$pm$$0.05 V vs. a normal hydrogen electrode.

Journal Articles

Control of epitaxy of graphene by crystallographic orientation of a Si substrate toward device applications

Fukidome, Hirokazu*; Takahashi, Ryota*; Abe, Shunsuke*; Imaizumi, Kei*; Handa, Hiroyuki*; Kang, H. C.*; Karasawa, Hiromi*; Suemitsu, Tetsuya*; Otsuji, Taiichi*; Enta, Yoshiharu*; et al.

Journal of Materials Chemistry, 21(43), p.17242 - 17248, 2011/11

 Times Cited Count:28 Percentile:62.06(Chemistry, Physical)

Journal Articles

Seasonal variation in serum lipid levels in Japanese workers

Kamezaki, Fumihiko; Sonoda, Shinjo*; Tomotsune, Yusuke; Yunaka, Hiromi; Otsuji, Yutaka*

Journal of Atherosclerosis and Thrombosis, 17(6), p.638 - 643, 2010/07

 Times Cited Count:23 Percentile:48.62(Peripheral Vascular Disease)

Journal Articles

Seasonal variation in metabolic syndrome prevalence

Kamezaki, Fumihiko; Sonoda, Shinjo*; Tomotsune, Yusuke; Yunaka, Hiromi; Otsuji, Yutaka*

Hypertension Research, 33(6), p.568 - 572, 2010/06

 Times Cited Count:48 Percentile:72.40(Peripheral Vascular Disease)

Journal Articles

Oxidation of element 102, nobelium, with flow electrolytic column chromatography on an atom-at-a-time scale

Toyoshima, Atsushi; Kasamatsu, Yoshitaka*; Tsukada, Kazuaki; Asai, Masato; Kitatsuji, Yoshihiro; Ishii, Yasuo; Tome, Hayato; Nishinaka, Ichiro; Haba, Hiromitsu*; Oe, Kazuhiro*; et al.

Journal of the American Chemical Society, 131(26), p.9180 - 9181, 2009/07

 Times Cited Count:15 Percentile:48.30(Chemistry, Multidisciplinary)

We report here on the successful oxidation of element 102, nobelium (No), on an atom-at-a-time scale in 0.1 M $$alpha$$-hydroxyisobutyric acid ($$alpha$$-HIB) solution using newly developed flow electrolytic column chromatography. It is found that the most stable No$$^{2+}$$ is oxidized to No$$^{3+}$$ within 3 min and that the oxidized No complex with $$alpha$$-HIB holds the trivalent state in the column above the applied potential of 1.0 V.

Journal Articles

Development of an electrochemistry apparatus for the heaviest elements

Toyoshima, Atsushi; Kasamatsu, Yoshitaka; Kitatsuji, Yoshihiro; Tsukada, Kazuaki; Haba, Hiromitsu*; Shinohara, Atsushi*; Nagame, Yuichiro

Radiochimica Acta, 96(6), p.323 - 326, 2008/06

 Times Cited Count:12 Percentile:60.73(Chemistry, Inorganic & Nuclear)

We developed a new apparatus for the study of electrochemical properties of the heaviest elements. The apparatus is based on a flow electrolytic cell combined with column chromatography. Glassy-carbon fibers modified with Nafion perfluorinated cation-exchange resin are used as a working electrode as well as a cation-exchanger. The elution behavior of $$^{139}$$Ce with the number of 10$$^{10}$$ atoms in 0.1 M ammonium $$alpha$$-hydroxyisobutyric acid solution from the column electrode was investigated at the applied potentials of 0.2 - 1.0 V versus the Ag/Agcl reference electrode in 1.0 M LiCl. It was found that $$^{139}$$Ce$$^{3+}$$ is successfully oxidized to $$^{139}$$Ce$$^{4+}$$ even with tracer concentration at around the redox potential determined by cyclic voltammetry for the macro amounts of Ce with 10$$^{17}$$ atoms (10$$^{-3}$$ M). The present oxidation reaction and separation of Ce$$^{4+}$$ was accomplished within a few minutes.

Journal Articles

Generation and evaluation of a 10$$^{20}$$ W/cm$$^{2}$$ intensity by focusing wavefront corrected 100 TW, 10 Hz laser pulses

Akahane, Yutaka; Ma, J.; Fukuda, Yuji; Aoyama, Makoto; Kiriyama, Hiromitsu; Inoue, Norihiro*; Tsuji, Koichi*; Nakai, Yoshiki*; Yamamoto, Yoichi*; Sheldakova, J. V.*; et al.

Japanese Journal of Applied Physics, Part 1, 44(8), p.6087 - 6089, 2005/08

 Times Cited Count:1 Percentile:4.63(Physics, Applied)

An improvement of laser-focused peak intensity has been achieved in a JAERI 100 TW Ti:sapphire chirped-pulse amplifier chain with a feedback-controlled adaptive optics system. Measurements of optical parameters of the laser pulse and an experimental tunneling ionization ratio of a rare gas atom with laser energy scaling have practically confirmed an ultrarelativistic intensity of over 10$$^{20}$$ W/cm$$^{2}$$ operating at a 10 Hz repetition rate.

Journal Articles

Electron acceleration by a nonlinear wakefield generated by ultrashort (23-fs) high-peak-power laser pulses in plasma

Kando, Masaki; Masuda, Shinichi; Zhidkov, A.*; Yamazaki, Atsushi; Kotaki, Hideyuki; Kondo, Shuji; Homma, Takayuki*; Kanazawa, Shuhei; Nakajima, Kazuhisa; Hayashi, Yukio; et al.

Physical Review E, 71(1), p.015403_1 - 015403_4, 2005/01

 Times Cited Count:33 Percentile:76.72(Physics, Fluids & Plasmas)

no abstracts in English

JAEA Reports

Fabrication of saturated temperature capsule for IASCC study

Ishikawa, Kazuyoshi; Kikuchi, Taiji; Isozaki, Futoshi*; Inoue, Hiromi; Oba, Toshihiro; Matsui, Yoshinori; Saito, Takashi; Nakano, Junichi; Tsuji, Hirokazu

JAERI-Tech 2002-061, 69 Pages, 2002/08

JAERI-Tech-2002-061.pdf:12.21MB

Study of irradiation assisted stress corrosion cracking (IASCC) is an important subject for the plant life assessment and extension of the light water reactors (LWRs). It is necessary that initiation mechanism of IASCC should be made clear under combined effect of irradiation, environment and stress in order to understand IASCC phenomena. Under the existing circumstance, Saturated Temperature Capsule (SATCAP) were fabricated for the irradiation test of IASCC studies in Japan Material Testing Reactor (JMTR). SATCAP is the irradiation rig to irradiate materials in high pressure water of controlled chemistry and temperature simulating Boiling water reactors (BWRs) core environment from the new water feelding system of out-of-pile. This report describes (1) investigation of technical problems for the design and fabrication of SATCAP, (2) the tests results of the problems and (3) fabrication and inspection of SATCAP.

Journal Articles

Evaluation of critial current performance of 13 T-46 kA steel-jacketed Nb$$_{3}$$Al conductor

Koizumi, Norikiyo; Azuma, Katsunori*; Tsuchiya, Yoshinori; Matsui, Kunihiro; Takahashi, Yoshikazu; Nakajima, Hideo; Nishijima, Gen; Nunoya, Yoshihiko; Ando, Toshinari; Isono, Takaaki; et al.

Fusion Engineering and Design, 58-59, p.1 - 5, 2001/11

 Times Cited Count:2 Percentile:19.35(Nuclear Science & Technology)

no abstracts in English

Journal Articles

First test results for the ITER central solenoid model coil

Kato, Takashi; Tsuji, Hiroshi; Ando, Toshinari; Takahashi, Yoshikazu; Nakajima, Hideo; Sugimoto, Makoto; Isono, Takaaki; Koizumi, Norikiyo; Kawano, Katsumi; Oshikiri, Masayuki*; et al.

Fusion Engineering and Design, 56-57, p.59 - 70, 2001/10

 Times Cited Count:18 Percentile:75.93(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Real-time [$$^{11}$$C]methionine translocation in barley in relation to mugineic acid phytosiderophore biosynthesis

Bughio, N.*; Nakanishi, Hiromi*; Kiyomiya, Shoichiro*; Matsuhashi, Shimpei; Ishioka, Noriko; Watanabe, Satoshi; Uchida, Hiroshi*; Tsuji, Atsunori*; Osa, Akihiko; Kume, Tamikazu; et al.

Planta, 213(5), p.708 - 715, 2001/09

 Times Cited Count:17 Percentile:37.81(Plant Sciences)

[$$^{11}$$C]Methionine ([$$^{11}$$C]Met) was supplied through barley roots and the $$^{11}$$C signal was follwoed using a real-time imaging system (PETIS), with subsequent development of autoradiographic images of the whole plant. In all cases, [$$^{11}$$C]Met was first translocated to the discrimination center, and this part was strongly labeled. Met absorbed by roots of the plants was subsequently translocated to other parts of the plant. In Fe-deficient (-Fe) barley plants, a drastic reduction in [$$^{11}$$C]Met translocation from the roots to the shoot was observed, while a greater amount of $$^{11}$$C was found in the leaves of Fe-sufficient or Met-pretreated -Fe plants. Treatment of -Fe plants with amiooxyacetic acid increased the translocation of [$$^{11}$$C]Met to the shoot. The retention of exogenously supplied [$$^{11}$$C]Met in the roots of -Fe barley indicates that the Met is used in the biosynthesis of mugineic acid (MA) in barley roots. This and the absence of Met movement from shoots to the roots suggest that the MA phytosiderophores precursor Met originates in the roots of plants.

Journal Articles

Progress of the ITER central solenoid model coil programme

Tsuji, Hiroshi; Okuno, Kiyoshi*; Thome, R.*; Salpietro, E.*; Egorov, S. A.*; Martovetsky, N.*; Ricci, M.*; Zanino, R.*; Zahn, G.*; Martinez, A.*; et al.

Nuclear Fusion, 41(5), p.645 - 651, 2001/05

 Times Cited Count:58 Percentile:83.28(Physics, Fluids & Plasmas)

no abstracts in English

Journal Articles

Visualization of $$^{15}$$O-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS)

Mori, Satoshi*; Kiyomiya, Shoichiro*; Nakanishi, Hiromi*; Ishioka, Noriko; Watanabe, Satoshi; Osa, Akihiko; Matsuhashi, Shimpei; Hashimoto, Shoji; Sekine, Toshiaki; Uchida, Hiroshi*; et al.

Soil Science and Plant Nutrition, 46(4), p.975 - 979, 2000/12

 Times Cited Count:31 Percentile:58.93(Plant Sciences)

no abstracts in English

Journal Articles

Visualizing real time [$$^{11}$$C]methionine translocation in Fe-sufficient and Fe-deficient barley using a Positron Emitting Tracer Imaging System (PETIS)

Nakanishi, Hiromi*; N.Bughio*; Matsuhashi, Shimpei; Ishioka, Noriko; Uchida, Hiroshi*; Tsuji, Atsunori*; Osa, Akihiko; Sekine, Toshiaki; Kume, Tamikazu; Mori, Satoshi*

Journal of Experimental Botany, 50(334), p.637 - 643, 1999/05

no abstracts in English

Journal Articles

Production of positron emitters and application of their labeled compounds to plant studies

Ishioka, Noriko; Matsuoka, Hiromitsu; Watanabe, Satoshi; Osa, Akihiko; Koizumi, Mitsuo; Matsuhashi, Shimpei; Kume, Tamikazu; Sekine, Toshiaki; Uchida, Hiroshi*; Tsuji, Atsunori*; et al.

Journal of Radioanalytical and Nuclear Chemistry, 239(2), p.417 - 421, 1999/00

 Times Cited Count:30 Percentile:87.59(Chemistry, Analytical)

no abstracts in English

54 (Records 1-20 displayed on this page)