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Support needs of mother who has children with food alleregies
SHIRAISHI Haruka,KONOSU Kyoko,MIZUNO Tomomi 아시아아동지원학회 2011 아시아아동지원연구 Vol.2 No.-
The purpose of this research was to clarify the current support system for the mothers of children with food allergies and their necessity for support from hearing investigation. The subjects were 37 mothers who belong to 3 parents' associations in Saitama prefecture. This research clarified that there are various demands from the mothers for support by the surrounding people. This research also suggests the current situation that the support system to share their concerns is insufficient even though the mothers have various worries. The mothers want a place where they can relieve their worries and the hardness of childrearing.
Preparation and Electric Double Layer Capacitance of Mesoporous Carbon
Shiraishi, Soshi,Kurihara, Hideyuki,Oya, Asao Korean Carbon Society 2001 Carbon Letters Vol.1 No.3
Mesoporous activated carbon fiber (ACF) was prepared from phenolic resin containing a small amount (0.1 wt %) of organic nickel complex through carbonization and steam activation. Microporous ACF as reference sample was also prepared from phenolic resin without agent. In both cases of the mesoporous ACFs and the microporous ACFs, the electric double layer capacitance of the nonaqueous electrolyte (0.5 M $TEABF_4$/PC or 1.0 M $LiClO_4$/PC) was not proportional to the BET specific surface area. This is owing to the low permeability of nonaqueous electrolyte or the low mobility of ion in narrow micropores. However, the mesoporous ACF showed higher double layer capacitance than the microporous (normal) ACF. This result suggests that the presence of many mesopores promotes the formation of effective double layer or the transfer of ion in the micropore.
Kazuhiro Shiraishi,Koki Ogura,Mantaro Nakamura,Yuma Fujii,Eiji Hiraki,Hyun Woo Lee,Mutsuo Nakaoka 전력전자학회 2004 ICPE(ISPE)논문집 Vol.- No.-
This paper presents an advanced circuit topology and optimum gate pulse patterns for the voltage source bridge type soft-switching(S-SW) sinewave PWM inverter, which incorporates a novel active auxiliary bridge commutation leg, associated quasi-resonant snubbers. In this voltage source type sinewave PWM inverter, all the main power switches and the auxiliary power switches can achieve the zero voltage soft-switching (ZVS) or the zero current soft-switching (ZCS). The complete S-SW commutation is possible only by determining the gate pulse pattern timing of the main switches and the auxiliary switches, and circuit parameters. The special resonant current and the current and voltage sensor control circuit to achieve S-SW commutation are not necessary for<br/> these resonant snubbers. In addition, the optimum gate pulse pattern to minimize the power losses of the resonant snubber treated here.
Characteristic Analysis of Integrated Magnetic Component for Forward Converter
T. Shiraishi,F. Hattori,M. Ishitobi,E. Hiraki 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5
A power converter is required to be compact, lightweight and low loss, and the various approaches have thus been carried out so far. For a forward converters (FC) used for step-down of medium-capacity, many papers that aims at its miniaturization by coupling the isolation transformers and the output reactors have been reported. Each method of the integrated magnetic components (IMC) shows that the position of the windings and the gaps are different and the total volume becomes smaller than that before coupling. However, it is not clear which method should be adopted to obtain the desired performance and what kind of characteristics it can judge from. Therefore, we classified the FC’s IMC from the way of the coupling and investigate the operation of the FC depending on the winding of the IMC in this paper. As results from simulation and experimental analysis, the winding position suitable for the FC, the way of reducing the volume of the magnetic component and suppressing the ripple of the input/output current became clear.