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Journal Articles

Pyroelectric power generation from the waste heat of automotive exhaust gas

Kim, J.*; Yamanaka, Satoru*; Murayama, Ichiro*; Kato, Takanori*; Sakamoto, Tomokazu*; Kawasaki, Takuro; Fukuda, Tatsuo; Sekino, Toru*; Nakayama, Tadachika*; Takeda, Masatoshi*; et al.

Sustainable Energy & Fuels (Internet), 4(3), p.1143 - 1149, 2020/03

 Times Cited Count:2 Percentile:17.34(Chemistry, Physical)

Journal Articles

Development of a dynamic CT system for neutron radiography and consecutive visualization of three-dimensional water behavior in a PEFC stack

Murakawa, Hideki*; Hashimoto, Michinori*; Sugimoto, Katsumi*; Asano, Hitoshi*; Takenaka, Nobuyuki*; Mochiki, Koichi*; Yasuda, Ryo

Nippon Kikai Gakkai Rombunshu, B, 77(784), p.2255 - 2262, 2011/12

Journal Articles

Visualization of dynamic 3-D water behavior in polymer electrolyte fuel cell by using neutron image intensifier

Takenaka, Nobuyuki*; Asano, Hitoshi*; Sugimoto, Katsumi*; Murakawa, Hideki*; Hashimoto, Michinori*; Shindo, Noritaka*; Mochiki, Koichi*; Yasuda, Ryo

Nuclear Instruments and Methods in Physics Research A, 651(1), p.277 - 281, 2011/09

 Times Cited Count:4 Percentile:61.89(Instruments & Instrumentation)

JAEA Reports

Studies on grouting performance in Mizunami Underground Research Laboratory (Contract research)

Kawamura, Hideki*; Ando, Kenichi*; Noda, Masaru*; Tanaka, Tatsuya*; Matsuda, Takeshi*; Fujii, Haruhiko*; Hashimoto, Shuji*; Ueda, Tadashi*; Matsui, Hiroya; Takeuchi, Shinji; et al.

JAEA-Technology 2009-081, 182 Pages, 2010/03

JAEA-Technology-2009-081.pdf:28.89MB

Grouting has practical importance for the reduction of groundwater inflow into excavations during construction of underground facilities. Considering the performance assessment of a radioactive waste repository, the performance of the engineered barrier system could be adversely affected by a high pH plume generated from grout. Therefore, a quantitative estimation of the effectiveness of grouting and grout material is essential. This study has been performed in the Mizunami URL being excavated in crystalline rock as a part of the Project for Grouting Technology Development for the Radioactive Waste Repository funded by METI, Japan. The aims were to evaluate the applicability of existing grouting technology and to develop methodology to determine the distribution of grout and change in hydraulic properties of the grouted rock volume. The target rock is the volume of rock around a planned refuge niche where the pre-excavation grouting was performed at 200-m depth from ground surface. After excavation of the refuge niche, ten boreholes were drilled and different kinds of investigations were carried out during and after drilling. The results were integrated and groundwater flow analysis of pre and post excavation grouting conditions were carried out to estimate quantitatively the effect of pre-excavation grouting. The results suggest that current pre-excavation grouting technology is effective for reduction of groundwater inflow into excavations and that hydraulic conductivity of the surrounding rock can be reduced by more than one order of magnitude.

Journal Articles

Development of fuel-coolant interaction analysis code

Moriyama, Kiyofumi; Maruyama, Yu; Nakamura, Hideo; Hashimoto, Kazuichiro; Kamo, Hideki*; Onuki, Akira; Akimoto, Hajime

Dai-7-Kai Doryoku Enerugi Gijutsu Shimpojiumu Koen Rombunshu (00-11), p.451 - 456, 2000/11

no abstracts in English

JAEA Reports

Development of NRESP98 Monte Carlo codes for the calculation of neutron response functions of neutron detectors; Calculation of the response function of spherical BF$$_{3}$$ proportional counter

Hashimoto, Makoto; Saito, Kei; Ando, Hideki

PNC-TN9410 98-061, 59 Pages, 1998/05

PNC-TN9410-98-061.pdf:2.58MB

The method to calculate the response function of spherical BF$$_{3}$$ proportional counter; which is commonly used as neutron dose rate meter and neutron spectrometer with multi moderator system, is developed. As the calculation code for evaluating the response function, the existing code series NRESP, the Monte Carlo code for the calculation of response function of neutron detectors, is selected. However, the application scope of the existing NRESP is restricted, the NRESP98 is tuned as generally applicable code, with expansion of the geometrical condition, the applicable element, ete. The NRESP98 is tested with the response function of the spherical BF$$_{3}$$ proportional counter. Including the effect of the distribution of amplification factor, the detailed evaluation of the charged particle transportation and the effect of the statistical distribution, the result of NRESP98 calculation fit the experience within $$pm$$ 10%.

Journal Articles

Electron beam treatment of lignite-burning flue gas with high concentrations of sulfur dioxide and water

Namba, Hideki; Hashimoto, Shoji; Tokunaga, Okihiro; *

Radiation Physics and Chemistry, 53(6), p.673 - 681, 1998/00

 Times Cited Count:11 Percentile:34.37(Chemistry, Physical)

no abstracts in English

JAEA Reports

Development of compound neutron dose meter

Hashimoto, Makoto; Torii, Tatsuo; Ando, Hideki

PNC-TN9410 95-189, 69 Pages, 1995/08

PNC-TN9410-95-189.pdf:2.88MB

The new radiation weighting factors for neutron are introduced in ICRP 1990 Recommendations instead of the former quality factor. The contribution of intermediate energy neutron to the dose estimated with the new factors is more serious than with the former factors. Therefore, it indicates that the neutron dose evaluated by the former factors sometimes underestimates the dose evaluated by the new factors. Accordingly, to develop the neutron dose meter adjusted to the new recommendations, the new neutron detector has been cxperimented. In this study, instead of moderated detectors usually used as a neutron dose rate meter, the compound detector based on the multidetector method was employed. To understand the characteristic of this detector, we simulated the energy response and carried out the characteristic cxamination with neutron sources and accelerators. As a result of energy response simulation, in the region of interest, it can apply the multidetector method. As a result of characteristic examination, the detector can be used for measuring the neutron dose. Furthermore, in processes of the examination, this detector can discriminate the average energy of neutrons of $$^{241}$$Am-Be from that of $$^{239}$$Pu-Be. It is very sensitive to the neutron cnergy difference at intermediate energy. In future, it will be made improvement to make more practical dose estimation, and it will be made investigation to apply the ability of energy resolution.

Journal Articles

To establish the technology with simultaneous removal of SOx and NOx in dry system; The development of electron beam flue gas treatment technology for coal-fired flue gas

*; *; Tokunaga, Okihiro; Hashimoto, Shoji; Namba, Hideki; *; *

Denki Hyoron, 0(8), p.70 - 73, 1995/08

no abstracts in English

JAEA Reports

Pilot-scale test for electron beam flue gas treatment of coal-fired boiler

Namba, Hideki; Tokunaga, Okihiro; Hashimoto, Shoji; *; *; *; *; *

JAERI-Tech 95-013, 6 Pages, 1995/03

JAERI-Tech-95-013.pdf:0.57MB

no abstracts in English

Journal Articles

Pilot-scale test for electron beam purification of flue gas from coal-combustion boiler

Hashimoto, Shoji; Namba, Hideki; Tokunaga, Okihiro; *; *; *; *; *

1995 SO$$_{2}$$ Control Symp., Book 3, 0, 10 Pages, 1995/03

no abstracts in English

Journal Articles

Demonstration test of electron beam flue gas treatment pilot plant of a coal fired thermal power station

*; *; *; *; Namba, Hideki; Tokunaga, Okihiro; Hashimoto, Shoji; *; *

Ebara Jiho, (166), p.56 - 64, 1995/00

no abstracts in English

Journal Articles

Pilot-scale test for electron beam purification of flue gas from coal-combustion boiler

Namba, Hideki; Tokunaga, Okihiro; Hashimoto, Shoji; *; *; *; *; *

Radiation Physics and Chemistry, 46(4-6), p.1103 - 1106, 1995/00

 Times Cited Count:32 Percentile:6.63(Chemistry, Physical)

no abstracts in English

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