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1,767 results on '"OHARA, S."'

112. Homo-chiral crystal growth and mono-chiral helimagnetism in inorganic chiral magnetic compounds

Author

Kousaka, Yusuke, Ohishi, K., Ninomiya, H., Matsumoto, Y., Ohara, S., Kakurai, K., Hutanu, V., Suzuki, J., Campo, Javier, Inoue, Katsuya, Akimitsu, J., Ministerio de Economía y Competitividad (España), and Japan Society for the Promotion of Science

Abstract

Trabajo presentado al International Workshop on Multipole Physics and Related Phenomena (J-Physics), celebrado en Hachimantai, Iwate (Japón) del 24 al 28 de septiemb, This work was supported by JSPS KAKENHI Grant Number 25220803, 25390139, 26108719, 15H03680, 15H05885, 15H05886, 16KK0102, 17H02912, 17H02767, and 17H02815. JC acknowledges the Grant Number MAT2015-68200-C2-2-P from the Spanish Ministry of Economy and Competitiveness.

Published
2017

113. Selective Phosphonylation of 5′-Adenosine Monophosphate (5′-AMP) via Pyrophosphite [PPi(III)]

Author

Kaye, K, Bryant, DE, Marriott, KER, Ohara, S, Fishwick, CWG, and Kee, TP

Abstract

We describe here experiments which demonstrate the selective phospho-transfer from a plausibly prebiotic condensed phosphorus (P) salt, pyrophosphite [H2P2O52−; PPi(III)], to the phosphate group of 5′-adenosine mono phosphate (5′-AMP). We show further that this P-transfer process is accelerated both by divalent metal ions (M2+) and by organic co-factors such as acetate (AcO−). In this specific case of P-transfer from PPi(III) to 5′-AMP, we show a synergistic enhancement of transfer in the combined presence of M2+ & AcO−. Isotopic labelling studies demonstrate that hydrolysis of the phosphonylated 5′-AMP, [P(III)P(V)-5′-AMP], proceeds via nuceophilic attack of water at the Pi(III) terminus.

Published
2016

124. Homo-chiral crystal growth and mono-chiral helimagnetism in inorganic chiral magnetic compounds

Author

Ministerio de Economía y Competitividad (España), Japan Society for the Promotion of Science, Kousaka, Yusuke, Ohishi, K., Ninomiya, H., Matsumoto, Y., Ohara, S., Kakurai, K., Hutanu, V., Suzuki, J., Campo, Javier, Inoue, Katsuya, Akimitsu, J., Ministerio de Economía y Competitividad (España), Japan Society for the Promotion of Science, Kousaka, Yusuke, Ohishi, K., Ninomiya, H., Matsumoto, Y., Ohara, S., Kakurai, K., Hutanu, V., Suzuki, J., Campo, Javier, Inoue, Katsuya, and Akimitsu, J.

Published
2017

132. Application of sputtered SiO2 insulator to Nb/AlOx/Nb Josephson junctions.

Author

Hoko, H., Imamura, T., Ohara, S., and Hasuo, S.

Subjects
SILICA, JOSEPHSON effect, BREAKDOWN voltage, NIOBIUM
Abstract

Describes the evaluation of the sputtered silicon dioxide as an insulator available in all niobium (Nb) Josephson circuits. Insulation characteristics of the silicon-oxygen compound; Quality of the sputtered silicon dioxide for infrared absorption and the breakdown voltage; Step coverage at the underlying Nb electrode edge.

Published
1987
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133. Fabrication technology for lead-alloy Josephson devices for high-density integrated circuits.

Author

Imamura, T., Hoko, H., Tamura, H., Yoshida, A., Suzuki, H., Morohashi, S., Ohara, S., Hasuo, S., and Yamaoka, T.

Subjects
LEAD alloys, JOSEPHSON junctions
Abstract

Evaluates the combined technology for fabricating lead-alloy Josephson devices. Description of fabrication techniques for the lead-alloy devices; Characteristics of each element in the circuits; Information on the 8-kbit memory cell arrays.

Published
1986
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134. Axonal TDP-43 aggregates in sporadic amyotrophic lateral sclerosis

Author

Onozato, T., primary, Nakahara, A., additional, Suzuki-Kouyama, E., additional, Hineno, A., additional, Yasude, T., additional, Nakamura, T., additional, Yahikozawa, H., additional, Watanabe, M., additional, Kayanuma, K., additional, Makishita, H., additional, Ohara, S., additional, Hashimoto, T., additional, Higuchi, K., additional, Sakai, T., additional, Asano, K., additional, Kanno, H., additional, Nakayama, J., additional, and Oyanagi, K., additional

Published
2016
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138. Arrival Time Series in Chaotic Cosmic Ray Air Showers

Author

Unno, W., Ohara, S., Urata, K., Masaki, I., Kitamura, T., Konishi, T., Tsuji, K., Chikawa, M., and Kato, Y.

Subjects
96.40Pq-Extensive air showers, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Instrumentation and Methods for Astrophysics, PACS
Abstract

[Abstract] Chaotic features detected in the arrival time series of cosmic ray air showers are rediscussed. Chaotic series of air showers observed in the same time period among distant observing sites cannot be explained by the hypothesis of stochastic noise mixture proposed by the Torino group.

Published
1997

144. Leaching Characteristic of Wood Pellet Combustion Residues from Different Combustion Equipments

Author

Sano, T., Miura, S., Furusawa, H., Kaneko, S., Yoshida, T., Nomura, T., and Ohara, S.

Subjects
Biomass
Abstract

To evaluate the suitability of ash application to agricultural fields and forest sites, the leaching characteristics of wood pellet ashes were studied for 11 types of ashes originating from the combustion of five types of Japanese wood pellets with two types of combustors (stoves and muffle furnaces). The ash leachate showed high K and Na concentrations and a high pH value, which indicates that the biomass ash acts as a source of base cations, raising the soil pH (an alternative to lime). As for the trace elements, the concentrations of B and Cr were generally higher than the others. Most of chromium in the leachate existed as Cr (VI). Based on a comparison of the element concentration between the stove and muffle furnace ashes originating from the same fuels, contamination in the combustion process was suggested for Cr, Zn and Cu. These results indicate that wood pellet ashes have higher potential as a fertilizer but that some improvement may be necessary for the combustion system to produce more environmentally-friendly ashes., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1836-1840

Published
2011
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145. Fundamental Study on Production of 'Hyper Wood Pellet' - (2) Effect of Torrefaction Condition of Japanese Wood Chips on Grinding and Pelletizing Properties

Author

Yoshida, T., Sano, T., Nomura, T., Gensai, H., Watada, H., Kamikawa, D., Kuroda, K., Kubojima, Y., Furusawa, H., Miura, S., Kaneko, S., and Ohara, S.

Subjects
Biomass
Abstract

To upgrade conventional wood pellets, Japanese softwood and hardwood chips were torrefied at around 200 – 350oC, and pelletized. The characteristics of torrefied material/pellets such as their calorific value, grinding energy, pelletizing energy and elemental composition, were also evaluated in this study. The calorific value, which increased with rising torrefaction temperature, exceeded 25MJ/kg (representing an increase of nearly 40% compared to the untreated state) for torrefaction at around 350oC. The grinding energy decreased with increasing torrefaction temperature, and the reduction effect was larger for Japanese oak hardwood chips. The pelletarization energy for the torrefied material tended to be slightly smaller than in the untreated case. Elemental analysis revealed that a decrease in the atomic ratio of H/C and O/C was observed for torrefied pellets., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 2015-2018

Published
2011
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146. Fundamental Study on Production of 'Hyper Wood Pellet ' (3) Upgraded Pellet Making by Torrefaction of Japanese Wood Pellets

Author

Nomura, T., Gensai, H., Watada, H., Sano, T., Kamikawa, D., Kuroda, K., Kubojima, Y., Furusawa, H., Miura, S., Kaneko, S., Ohara, S., and Yoshida, T.

Subjects
technology, industry, and agriculture, Biomass, complex mixtures
Abstract

Upgraded wood pellets (Hyper wood pellets) were produced and evaluated by torrefaction of wood pellets. In this study, conventional wood pellets were initially prepared and subsequently torrefied on a laboratory and then larger scale. During the laboratory scale production, a few kilograms of pellets from wooden parts of Japanese cedar (Cryptomeria japonica) and Japanese oak (Konara, Quercus serrata) trees were heat treated in an inert gas oven. For the Japanese cedar, the calorific values were improved by heat treatment up to 260oC. By heat treatment at 240oC, the upgrade ratio of HHV was nearly 30% and the energy yield was 97%. For the Japanese oak, the calorific values were improved by heat treatment up to 320oC. By heat treatment at 280oC, the upgrade ratio of HHV exceeded 30% and the energy yield was 84%. On a larger scale, a conventional charcoal oven was modified for Hyper wood pellet production, meaning Hyper wood pellet with 25 MJ of calorific value were produced during heat treatment at 350oC., Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 2019-2021

Published
2011
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