JOPSS - Search Results

Journal Articles

Pressure-dependent structure of methanol-water mixtures up to 1.2 GPa; Neutron diffraction experiments and molecular dynamics simulations

Temleitner, L.*; Hattori, Takanori; Abe, Jun*; Nakajima, Yoichi*; Pusztai, L.*

Molecules (Internet), 26(5), p.1218_1 - 1218_12, 2021/03

https://doi.org/10.3390/molecules26051218

Times Cited Count：3 Percentile：8.76(Biochemistry & Molecular Biology)

Total structure factors of per-deuterated methanol and heavy water, CD $_{3}$ OD and D $_{2}$ O, have been determined across the entire composition range at pressures of up to 1.2 GPa, by neutron diffraction. Largest variations due to increasing pressure were observed below 5 $AA$^{-1}$$ , mostly as shifts of the first and second maxima. Molecular dynamics computer simulations been conducted at the experimental pressures to interpret neutron diffraction results. The peak shifts mentioned above could be qualitatively reproduced by simulations. In order to reveal the influence of changing pressure on the local intermolecular structure, simulated structures have been analyzed in terms of hydrogen bond related partial radial distribution functions and size distributions of hydrogen bonded cyclic entities. Distinct differences between pressure dependent structures of water-rich and methanol-rich composition regions have been revealed.

Journal Articles

Oxidation kinetics of Zry-4 fuel cladding in mixed steam-air atmospheres at temperatures of 1273 - 1473 K

Negyesi, M.; Amaya, Masaki

Journal of Nuclear Science and Technology, 54(10), p.1143 - 1155, 2017/10

https://doi.org/10.1080/00223131.2017.1344583

Times Cited Count：8 Percentile：55.98(Nuclear Science & Technology)

Journal Articles

An Experimental study on heat transfer from a mixture of solid-fuel and liquid-steel during core disruptive accidents in Sodium-Cooled Fast Reactors

Kamiyama, Kenji; Konishi, Kensuke; Sato, Ikken; Toyooka, Junichi; Matsuba, Kenichi; Suzuki, Toru; Tobita, Yoshiharu; Pakhnits, A. V.*; Vityuk, V. A.*; Vurim, A. D.*; et al.

Proceedings of 10th International Topical Meeting on Nuclear Thermal Hydraulics, Operation and Safety (NUTHOS-10) (USB Flash Drive), 8 Pages, 2014/12

JAEA Reports

Coarse break-up of a stream of oxide and steel melt in a water pool (Contract research)

Moriyama, Kiyofumi; Maruyama, Yu; Usami, Tsutomu*; Nakamura, Hideo

JAERI-Research 2005-017, 173 Pages, 2005/08

JAERI-Research-2005-017.pdf:11.17MB

A series of experiments on the break-up of high temperature oxide and steel melt jets in a water pool was conducted. The objective was to obtain data for the jet break-up length and size distribution of the droplets produced by the jet break-up, and information on the influence of material properties. Also, we tried to obtain additional information giving a clue to the mechanism governing the melt jet break-up, such as flow intensity of the steam column surrounding the melt jet, and its relation with the droplet size. In the experiments, zirconia-alumina mixture and stainless steel melt jets with diameter 17mm and velocity 7.8m/s at the water surface were dropped into a deep (2.1m) or shallow (0.6m) water pool with various subcool. From the results of the present experiments and also by referring other experimental data from literature, we obtained empirical correlation equations for the jet break-up length, the fraction of jet broken-up in a shallow pool where the jet was not completely broken-up, and the droplet size.

Journal Articles

Thermodynamics in density-functional theory and force theorems

Chihara, Junzo*; Yamagiwa, Mitsuru

Progress of Theoretical Physics, 111(3), p.339 - 359, 2004/03

https://doi.org/10.1143/PTP.111.339

Times Cited Count：5 Percentile：36.73(Physics, Multidisciplinary)

no abstracts in English

Journal Articles

Structure evolution and corresponding electrical properties in weakly bound Co-C60 mixture

Sakai, Seiji; Naramoto, Hiroshi; Xu, Y.; Priyanto, T. H.; Lavrentiev, V.; Narumi, Kazumasa

Materials Research Society Symposium Proceedings, Vol.788, p.L11.49.1 - L11.49.6, 2004/00

https://doi.org/10.1557/PROC-788-L11.49

Mixture films between cobalt and C $_{60}$ (CoxC $_{60}$ , x = 0.5-700) were prepared by co-evaporation technique under UHV conditions. The composition-dependent features of dilatation and downshift of Raman peak suggest that the mixtures are composed of cobalt particles and a C $_{60}$ -based phase in which certain number of cobalt atoms are coordinated with C $_{60}$ molecules. It is deduced that the equilibrated number of cobalt atoms in the C $_{60}$ -based phase is 4 atoms per C $_{60}$ molecule and in which an electron transfer occurs from a cobalt atom to a C $_{60}$ molecule. The evaluation of their temperature dependences reveals that: (1) The mixtures with x 4 are thermally activated-type, and their conductive nature can be attributed to the C $_{60}$ -based phase. Further (2) the mixtures between 4 x 60 are also thermally activated, however, the electron hopping process between the isolated cobalt particles is supposed to be operative (variable-range-hopping). And (3) in the mixtures with x 60 which corresponds to a percolation threshold for cobalt particles, the system changes into metallic conduction.

Journal Articles

Isolation of Co nanoparticles by C $_{60}$ molecules in co-deposited film

Lavrentiev, V.; Abe, Hiroaki*; Yamamoto, Shunya; Naramoto, Hiroshi; Narumi, Kazumasa

Materials Letters, 57(24-25), p.4093 - 4097, 2003/08

https://doi.org/10.1016/S0167-577X(03)00272-6

Times Cited Count：10 Percentile：40.12(Materials Science, Multidisciplinary)

no abstracts in English

Journal Articles

RBS and SEM analysis of the nickel-fullerene hybrid systems

Vacik, J.; Naramoto, Hiroshi; Narumi, Kazumasa; Yamamoto, Shunya; Abe, Hiroaki*

Nuclear Instruments and Methods in Physics Research B, 206, p.395 - 398, 2003/05

https://doi.org/10.1016/S0168-583X(03)00770-5

Times Cited Count：9 Percentile：52.41(Instruments & Instrumentation)

no abstracts in English

Journal Articles

Unit sphere concept for macroscopic triggering of large-scale vapor explosions

Maruyama, Yu*; Moriyama, Kiyofumi; Nakamura, Hideo

Journal of Nuclear Science and Technology, 39(8), p.854 - 864, 2002/08

https://doi.org/10.3327/jnst.39.854

Times Cited Count：4 Percentile：28.58(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Co and C $_{60}$ interaction under conditions of mixture

Lavrentiev, V.; Abe, Hiroaki; Yamamoto, Shunya; Naramoto, Hiroshi; Narumi, Kazumasa

Molecular Crystals and Liquid Crystals, 386, p.139 - 143, 2002/00

https://doi.org/10.1080/713738824

Times Cited Count：5 Percentile：36.44(Chemistry, Multidisciplinary)

no abstracts in English

Journal Articles

High-frame-rate video visualization of simulated lower head behavior during TMI accident using neutron radioscopy

Nakamura, Hideo; Shibamoto, Yasuteru; Anoda, Yoshinari; Kukita, Yutaka; Mishima, Kaichiro*; Hibiki, Takashi*

Fifth World Conf. on Neutron Radiography, 0, p.665 - 672, 1996/00

no abstracts in English

Journal Articles

Study on the formation of -U $_{2}$ N $_{3+x}$ using unstable ammonia; Reaction sequence and control of nitrogen activity

Serizawa, Hiroyuki; Fukuda, Kosaku;

Journal of Alloys and Compounds, 223, p.39 - 44, 1995/00

https://doi.org/10.1016/0925-8388(94)01442-6

Times Cited Count：6 Percentile：49.39(Chemistry, Physical)

no abstracts in English

Journal Articles

Preparation of high density(Th,U)O $_{2}$ pellets by sol-gel microsphere pelletization and 1300 $^{circ}$ C air sintering

; Takahashi, Yoshihisa

Journal of Nuclear Materials, 217, p.127 - 137, 1994/00

https://doi.org/10.1016/0022-3115(94)90312-3

Times Cited Count：14 Percentile：74.82(Materials Science, Multidisciplinary)

no abstracts in English

JAEA Reports

Critical mass and dimensions of bare $^{235}$ U-H $_{2}$ O system; Calculations with MCNP-4 code and JENDL-3 library

; Okuno, Hiroshi

JAERI-M 93-212, 39 Pages, 1993/10

JAERI-M-93-212.pdf:1.21MB

no abstracts in English

JAEA Reports

Study on flooding in two-phase flow

; Yagi, Junji*; Kumamaru, Hiroshige

JAERI-M 93-199, 48 Pages, 1993/10

JAERI-M-93-199.pdf:1.26MB

no abstracts in English

Journal Articles

Critical heat flux and heat transfer above mixture level under high-pressure boil-off conditions in PWR type and tight-lattice type fuel bundles

Kumamaru, Hiroshige; Kukita, Yutaka

Nucl. Eng. Des., 144, p.257 - 268, 1993/00

https://doi.org/10.1016/0029-5493(93)90142-V

Times Cited Count：1 Percentile：18.58(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Critical heat flux and heat transfer above mixture level under high-pressure boil-off conditions for PWR type and tight-lattice type fuel bundles

Kumamaru, Hiroshige; Kukita, Yutaka

ANP 92: Proc. of the Int. Conf. on Design and Safety of Advanced Nuclear Power Plants,Vol. 3, p.24.4-1 - 24.4-7, 1992/00

no abstracts in English

Journal Articles

Preparation of pure tritium for a liquid D $_{2}$ /T $_{2}$ target of muon-catalyzed fusion experiments

Kudo, Hiroshi; Fujie, Makoto; Tanase, Masakazu; Kato, Mineo; Kurosawa, Kiyoyuki; Sugai, Hiroyuki; Umezawa, Hirokazu; Matsuzaki, Teiichiro*; Nagamine, Kanetada*

Applied Radiation and Isotopes, 43(5), p.577 - 583, 1992/00

https://doi.org/10.1016/0883-2889(92)90024-9

no abstracts in English

Journal Articles

BWR natural circulation experiments at ROSA-III under low-power and reduced inventory conditions

; ; ; Tasaka, Kanji

Journal of Nuclear Science and Technology, 25(2), p.143 - 152, 1988/02

https://doi.org/10.3327/jnst.25.143

no abstracts in English

Journal Articles

A Powerful solution algorithm for single-stage flash problems

;

Comput.Chem.Eng., 10(4), p.353 - 363, 1986/00

https://doi.org/10.1016/0098-1354(86)87005-3

Times Cited Count：6 Percentile：57.19(Computer Science, Interdisciplinary Applications)

no abstracts in English

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Pressure-dependent structure of methanol-water mixtures up to 1.2 GPa; Neutron diffraction experiments and molecular dynamics simulations

Oxidation kinetics of Zry-4 fuel cladding in mixed steam-air atmospheres at temperatures of 1273 - 1473 K

An Experimental study on heat transfer from a mixture of solid-fuel and liquid-steel during core disruptive accidents in Sodium-Cooled Fast Reactors

Coarse break-up of a stream of oxide and steel melt in a water pool (Contract research)

Thermodynamics in density-functional theory and force theorems

Structure evolution and corresponding electrical properties in weakly bound Co-C60 mixture

Isolation of Co nanoparticles by C $_{60}$ molecules in co-deposited film

RBS and SEM analysis of the nickel-fullerene hybrid systems

Unit sphere concept for macroscopic triggering of large-scale vapor explosions

Co and C $_{60}$ interaction under conditions of mixture

High-frame-rate video visualization of simulated lower head behavior during TMI accident using neutron radioscopy

Study on the formation of -U $_{2}$ N $_{3+x}$ using unstable ammonia; Reaction sequence and control of nitrogen activity

Preparation of high density(Th,U)O $_{2}$ pellets by sol-gel microsphere pelletization and 1300 $^{circ}$ C air sintering

Critical mass and dimensions of bare $^{235}$ U-H $_{2}$ O system; Calculations with MCNP-4 code and JENDL-3 library

Study on flooding in two-phase flow

Critical heat flux and heat transfer above mixture level under high-pressure boil-off conditions in PWR type and tight-lattice type fuel bundles

Critical heat flux and heat transfer above mixture level under high-pressure boil-off conditions for PWR type and tight-lattice type fuel bundles

Preparation of pure tritium for a liquid D $_{2}$ /T $_{2}$ target of muon-catalyzed fusion experiments

BWR natural circulation experiments at ROSA-III under low-power and reduced inventory conditions

A Powerful solution algorithm for single-stage flash problems