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RISS 인기검색어
- 검색키워드
- 저자 : S. FURUTA (검색결과 6 건)
- 무료
- 기관 내 무료
- 유료
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Applicability of Nuclear Reaction Models Implemented in PHITS to Simulations on Single-event Effects
S. Abe,S. Hirayama,Y. Watanabe,N. Sano,Y. Tosaka,M. Tsutsui,H. Furuta,T. Imamura 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The nuclear reaction models implemented in the PHITS (Particle and Heavy Ion Transport code System), i.e., the INC model, the QMD model and "event generator mode (e-mode)" with the JENDL-3.3 are validated to apply it to simulations on single-event effects. The model calculations are compared with available experimental data of light-ion (proton and alpha particle) production from neutron-induced reactions on ^(nat)Si and ^(16)O for neutron energies below 100 MeV. Since there is no measurement of lightion production from Si for neutron energies more than 100 MeV, proton-induced reactions on ^(27)Al are also used in the model validation. Comparisons of calculated and measured data for lightion production show that the e-mode calculation with JENDL-3.3 provides better agreement with the experimental data below 20 MeV than the INC and QMD models, and the QMD model reproduces them well above 20 MeV.
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EFFECTS OF ALTERNATING 6-HOUR LIGHT/DARK CYCLES ON THE RUMINATING BEHAVIOR OF FASTED GOATS
Oshiro, S.,Nakamae, H.,Furuta, K.,Hirakawa, M.,Higoshi, H. Asian Australasian Association of Animal Productio 1996 Animal Bioscience Vol.9 No.3
Experiments were conducted to study the effects of a dark (06:00-12:00), light (12:00-18:00), dark (18:00-24:00), and light (00:00-06:00) cycle on the ruminating behavior of five fasting female goats. Rumination time and number of boli were not different in the dark and light periods of the fed state or in the second and third days of fasting. Ruminating time and number of boli increased in the dark (06:00-12:00) period compared to the light (12:00-18:00) period during the first day of fasting. Ruminating time was higher after the first day of fasting than the fed state, and decreased substantially after the first day of fasting than the fed state, and decreased substantially after the second and third days of fasting compared to the fed state or the first day of fasting. Number of boli/day was not different among the fed state, the second and third days of fasting but was higher after the first day fasting compared to the fed state.
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Nanosilicon for single-electron devices
H. Mizuta,Y. Furuta,T. Kamiya,Y. T. Tan,Z.A.K. Durrani,S. Amakawa,K. Nakazato,H. Ahmed 한국물리학회 2004 Current Applied Physics Vol.4 No.2-4
This paper presents a brief overview of the physics of nanosilicon materials for single-electron device applications. We study howa nanosilicon grain and a discrete grain boundary work as a charging island and a tunnel barrier by using a point-contact transistor,which features an extremely short and narrow channel. Single-electron charging phenomena are investigated by comparing as-prepared devices and various oxidized devices. The optimization of grain and grain-boundary structural parameters is discussed forimproving the Coulomb blockade characteristics and realizing room temperature device operation.
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DEVELOPMENT OF INVERTER AND POWER CAPACITORS FOR MILD HYBRID VEHICLE (MHV) - TOYOTA "CROWN"
Shida, Y.,Kanda, M.,Ohta, K.,Furuta, S.,Ishii, J. The Korean Society of Automotive Engineers 2003 International journal of automotive technology Vol.4 No.1
The 42V Mild Hybrid System has been released into market by Toyota for the first time in the world in 2001. The set-up employs an inverter unit to control the motor/generator (MG) electronically. The driving system called such as Toyota Mild Hybrid System (TMHS) has additional new functions to conventional internal combustion engines. When stopping vehicle, the engine stops promptly. When starting vehicle, by releasing the brake pedal MG starts the vehicle at the same time (EV-driving mode). When stepping on the accelerator pedal, or after a given period of time the engine firing occurs and the engine-driving mode starts. When running by motor, the power is supplied to the motor from 36V battery through the inverter. High outputs and instant responses are required for Inverter. At the same time, the compact volume is required to fit into the limited space of the engine room. The compact size and high output are also required to Power Capacitor used for this inverter. The power capacitors has been newly developed, shaped in "flat" type, suitably for the inverter. The points of developments on inverter and power capacitor are described in this paper.his paper.
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DEVELOPMENT OF INVERTER AND POWER CAPACITORS FOR MILD HYBRID VEHICLE(MHV)-TOYOTA"CROWN"
Y. SHIDA,M. KANDA,K. OHTA,S. FURUTA,J. ISHII 한국자동차공학회 2003 International journal of automotive technology Vol.4 No.1
The 42V Mild Hybrid System has been released into market by Toyota for the first time in the world in 2001. The set-up employs an inverter unit to control the motor/generator (MG) electronically. The driving system called such as Toyota Mild Hybrid System (TMHS) has additional new functions to conventional internal combustion engines. When stopping vehicle, the engine stops promptly. When starting vehicle. by releasing the brake pedal MG starts the vehicle at the same time (EV-driving mode). When stepping on the accelerator pedal. or after a given period of time the engine firing occurs and the engine-driving mode starts. When running by motor. the power is supplied to the motor from 36V battery through the inverter. High outputs and instant responses are required for Inverter. At the same time. the compact volume is required to fit into the limited space of the engine room. The compact size and high output are also required to Power Capacitor used for this inverter. The power capacitors has been newly developed. shaped in "flat" type. suitably for the inverter. The points of developments on inverter and power capacitor are described in this paper<br/>
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Bolligarla, Ramababu,Ishida, Masatoshi,Shetti, Vijayendra S.,Yamasumi, Kazuhisa,Furuta, Hiroyuki,Lee, Chang-Hee The Royal Society of Chemistry 2015 Physical chemistry chemical physics Vol.17 No.14
<P>The synthesis, characterization, and photophysical and electrochemical properties of a novel tetrathiafulvalene (TTF)-annulated core-modified porphyrin (<B>1</B>) and its expanded rubyrin analogue (<B>2</B>) are described. The sulfur core modifications in <B>1</B> and <B>2</B> allow a feasible intramolecular charge transfer from the TTF fragments to the central conjugated core as inferred from comparative spectroscopic and electrochemical measurements. DFT calculations also support the intramolecular charge transfer nature of <B>1</B> and <B>2</B> upon excitation. Further the electronic perturbation of the TTF-annulated porphyrins was achieved by protonation, giving rise to a drastic change in the optical features with an extremely low energy band in the NIR region. The pronounced electron accepting ability of the macrocyclic core of the dicationic species (<B>H<SUB>2</SUB>1<SUP>2+</SUP></B> and <B>H<SUB>2</SUB>2<SUP>2+</SUP></B>) resulted in the thermally excited electron transfer occurring at room temperature as elucidated by EPR spectroscopy.</P> <P>Graphic Abstract</P><P>The effect of the core modification and protonation on the intramolecular charge transfer phenomenon was studied in the core-modified families of TTF-annulated porphyrinoids. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c4cp05385k'> </P>
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