Refine your search:     
Report No.
 - 
Search Results: Records 1-20 displayed on this page of 30

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Evaluation of bond repair effect for ultra-high-strength concrete specimens by neutron diffraction method

Yasue, Ayumu*; Kobayashi, Kensuke*; Yoshioka, Masahiro*; Noma, Takashi*; Okuno, Koichi*; Tanaka, Seiichiro*; Hirata, Yoshikazu*; Ooka, Tokunao*; Kimura, Yoshiharu*; Nagai, Tomoya*; et al.

Journal of Advanced Concrete Technology, 21(5), p.337 - 350, 2023/05

 Times Cited Count:0 Percentile:0.00(Construction & Building Technology)

The purpose of this study was to evaluate the use of resin injection to repair cracks in ultra-high-strength concrete (UHSC) members. As a preliminary step, the applicability of the neutron diffraction method (NDM) to investigate the effect of repairs in UHSC specimens was examined. The experimental results showed that the NDM can measure stresses in rebars in UHSC and normal concrete specimens. Therefore, in this experiment, the NDM was used to measure the bond performance of repairs with epoxy resin around the slit in normal concrete and UHSC specimens and examine the effect of repair on the UHSC specimens. Displacement around the slit was measured using a PI-shape displacement transducer. The evaluation confirmed that the bond performance of the repaired area was recovered by resin injection regardless of the concrete strength. In addition, the displacement around the slit was smaller for the injected specimens than the noninjected specimens. These experimental results clarified that by injecting resin, the same bond repair effect could be obtained in UHSC and normal concrete specimens.

Journal Articles

Transmission secondary ion mass spectrometry using 5 MeV C$$_{60}$$$$^{+}$$ ions

Nakajima, Kaoru*; Nagano, Kengo*; Suzuki, Motofumi*; Narumi, Kazumasa; Saito, Yuichi; Hirata, Koichi*; Kimura, Kenji*

Applied Physics Letters, 104(11), p.114103_1 - 114103_4, 2014/03

 Times Cited Count:7 Percentile:29.58(Physics, Applied)

Journal Articles

Time-of-flight secondary ion mass spectrometry with energetic cluster ion impact ionization for highly sensitive chemical structure characterization

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa

Nuclear Instruments and Methods in Physics Research B, 314, p.39 - 42, 2013/11

 Times Cited Count:4 Percentile:31.99(Instruments & Instrumentation)

Journal Articles

Transmission properties of C$$_{60}$$ ions through micro- and nano-capillaries

Tsuchida, Hidetsugu*; Majima, Takuya*; Tomita, Shigeo*; Sasa, Kimikazu*; Narumi, Kazumasa; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Hirata, Koichi*; Shibata, Hiromi*; et al.

Nuclear Instruments and Methods in Physics Research B, 315, p.336 - 340, 2013/11

 Times Cited Count:3 Percentile:25.92(Instruments & Instrumentation)

Journal Articles

Reduction of charging effects on negative secondary ion TOF mass spectra of PMMA using cluster ion impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa; Kamiya, Tomihiro

JAEA-Review 2012-046, JAEA Takasaki Annual Report 2011, P. 165, 2013/01

Journal Articles

Secondary ion emission from PTFE upon C$$_{60}$$ ion impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki*; Narumi, Kazumasa; Kamiya, Tomihiro

JAEA-Review 2011-043, JAEA Takasaki Annual Report 2010, P. 156, 2012/01

Journal Articles

Surface-sensitive chemical analysis of organic insulating thin films using negative secondary ions induced by medium energy C$$_{60}$$ impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Narumi, Kazumasa

Applied Physics Express, 4(11), p.116202_1 - 116202_3, 2011/11

 Times Cited Count:8 Percentile:33.83(Physics, Applied)

Journal Articles

Secondary ion counting for surface-sensitive chemical analysis of organic compounds using time-of-flight secondary ion mass spectroscopy with cluster ion impact ionization

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki*; Narumi, Kazumasa

Review of Scientific Instruments, 82(3), p.033101_1 - 033101_5, 2011/03

 Times Cited Count:10 Percentile:43.72(Instruments & Instrumentation)

Journal Articles

Comparison of secondary ion emission yields for poly-tyrosine between cluster and heavy ion impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Takahashi, Yasuyuki; Narumi, Kazumasa

Nuclear Instruments and Methods in Physics Research B, 268(19), p.2930 - 2932, 2010/10

 Times Cited Count:3 Percentile:28.29(Instruments & Instrumentation)

Journal Articles

Development of secondary ion mass spectroscopy using medium energy C$$_{60}$$ ion impact

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Adachi, Masahiro*; Yamada, Keisuke; Narumi, Kazumasa

Nuclear Instruments and Methods in Physics Research B, 266(10), p.2450 - 2452, 2008/05

 Times Cited Count:13 Percentile:63.45(Instruments & Instrumentation)

Journal Articles

Organic contaminant detection of silicon wafers using negative secondary ions induced by cluster ion impacts

Hirata, Koichi*; Saito, Yuichi; Chiba, Atsuya; Narumi, Kazumasa

Applied Physics Express, 1(4), p.047002_1 - 047002_3, 2008/04

 Times Cited Count:4 Percentile:18.42(Physics, Applied)

Journal Articles

Laser ablation of silicon in neon gas; Study of excitation mechanism of neon neutrals by ablated silicon ions

Saeki, Morihisa; Hirata, Koichi*; Sakka, Tetsuo*; Oba, Hironori; Yokoyama, Atsushi

Journal of Applied Physics, 98(4), p.044912_1 - 044912_6, 2005/08

 Times Cited Count:3 Percentile:13.51(Physics, Applied)

no abstracts in English

Journal Articles

Effect of arbuscular mycorrhizal fungus on growth and P absorption of soybean

Watanabe, Koichiro*; Rokuhira, Kazuyoshi*; Matsuda, Hiroko*; Arima, Yasuhiro*; Hirata, Hiroshi*; Kume, Tamikazu; Matsuhashi, Shimpei

Nihon Dojo Hiryo Gaku Zasshi, 72(6), p.793 - 796, 2001/12

no abstracts in English

Journal Articles

Defects in 30 keV Er$$^{+}$$-implanted SiO$$_{2}$$/Si studied by positron annihilation and cathodoluminescence

Hirata, Koichi*; Arai, Hideyuki*; Kawasuso, Atsuo; Sekiguchi, T.*; Kobayashi, Yoshinori*; Okada, Sohei

Journal of Applied Physics, 90(1), p.237 - 242, 2001/07

 Times Cited Count:4 Percentile:21.58(Physics, Applied)

no abstracts in English

Journal Articles

Effect of MeV energy cluster ion irradiation

Saito, Yuichi; Mizuhashi, Kiyoshi; Tajima, Satoshi; Arakawa, Kazuo; Hirata, Koichi*; Kobayashi, Yoshinori*

JAERI-Conf 2000-019, p.93 - 96, 2001/02

no abstracts in English

JAEA Reports

Japanese contributions to blanket design for ITER

Kuroda, Toshimasa*; Yoshida, Hiroshi; Takatsu, Hideyuki; Seki, Yasushi; Noda, Kenji; Watanabe, H.; Koizumi, Koichi; Nishio, Satoshi; ; ; et al.

JAERI-M 91-133, 191 Pages, 1991/08

JAERI-M-91-133.pdf:5.79MB

no abstracts in English

Oral presentation

Reduction of charging effects on negative secondary ion mass spectra of PMMA using cluster primary ion impacts

Hirata, Koichi*; Saito, Yuichi; Narumi, Kazumasa; Chiba, Atsuya; Yamada, Keisuke; Kamiya, Tomihiro

no journal, , 

no abstracts in English

Oral presentation

Production of C$$_{60}$$ microbeams by single-microcapillary methods

Tsuchida, Hidetsugu*; Majima, Takuya*; Tomita, Shigeo*; Sasa, Kimikazu*; Narumi, Kazumasa; Saito, Yuichi; Chiba, Atsuya; Yamada, Keisuke; Hirata, Koichi*; Shibata, Hiromi*; et al.

no journal, , 

Oral presentation

Studies on radiation effect of MeV cluster ions at JAEA/Takasaki

Narumi, Kazumasa; Saito, Yuichi; Chiba, Atsuya; Adachi, Masahiro; Naramoto, Hiroshi*; Seki, Shu*; Hirata, Koichi*; Iwase, Akihiro*; Kaneko, Toshiaki*; Shibata, Hiromi*

no journal, , 

no abstracts in English

Oral presentation

Wake effects on fast molecular transmission through a nanocapillary

Tsuchida, Hidetsugu*; Nakajima, Kaoru*; Yokoe, Junya*; Sugiyama, Motohiko*; Ota, Yushi*; Majima, Takuya*; Shibata, Hiromi*; Tomita, Shigeo*; Sasa, Kimikazu*; Hirata, Koichi*; et al.

no journal, , 

no abstracts in English

30 (Records 1-20 displayed on this page)