Tomofumi Amano

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BACKGROUND & AIMS Corticotropin-releasing factor receptor-1 (CRF(1)) mediates the stress-induced colonic motor activity. Less is known about the role of CRF(2) in the colonic response to stress. METHODS We studied colonic contractile activity in rats and CRF(2)-/-, CRF-overexpressing, and wild-type mice using still manometry; we analyzed defecation(More)
This paper describes a novel power control scheme for a three-phase to single-phase matrix converter for a gas engine cogeneration system. This matrix converter has no dc link but a small capacitor for compensation of single-phase power pulsation. The capacitor also contributes to compensate reactive current of a generator. Additionally, modulation control(More)
Corticotropin-releasing factor (CRF) and urocortin I (UcnI) have been shown to accelerate colonic transit after central nervous system (CNS) or peripheral administration, but the mechanism of their peripheral effect on colonic motor function has not been fully investigated. Furthermore, the localization of UcnI in the enteric nervous system (ENS) of the(More)
Application of a three-phase to single-phase matrix converter (MC) to a 1 kW household gas engine cogeneration system is investigated from the viewpoint that the MC can improve the efficiency of a synchronous generator with power factor control and reduce the converter losses by using reverse blocking devices. Since the MC connects a three-phase generator(More)
Mosapride citrate hydrate (mosapride) has been known to act as a 5-HT4 agonist and to enhance gastric emptying. However, its mode of action, such as time course and dosage effect, on gastric emptying has not been clarified. This study aimed to clarify these points by the breath test using [1-(13)C]acetic acid in conscious rats. Mosapride significantly and(More)
Operating characteristics of a three-phase to single-phase matrix converter applied to a gas engine cogeneration system is investigated in this paper. Application of the matrix converter can enhance efficiency of a synchronous generator and converter because it improves total power factor of the generator and reduce losses in the converter. This matrix(More)
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