Jin Kuan Chang

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To define the role and mechanism of action of K+ channels in regulating fetal pulmonary vascular tone, we studied the hemodynamic effects of pinacidil (a K+ channel activator) and glibenclamide (a K+ channel blocker). The effects of pinacidil were compared with those of acetylcholine [an endothelium-derived relaxing factor- (EDRF) dependent pulmonary(More)
OBJECTIVE The purpose of this study was to examine whether basal endothelium-derived relaxing factor release contributes to regulation of resting umbilical-placental vascular resistance. STUDY DESIGN Because N omega-nitro-L-arginine selectively inhibits the synthesis of nitric oxide, a major endothelium-derived relaxing factor, we investigated the effects(More)
Abstract: This paper outlines the modeling and controller design of a novel two-stage photovoltaic (PV) micro inverter (MI) that eliminates the need for an electrolytic capacitor (E-cap) and input current sensor. The proposed MI uses an active-clamped current-fed push-pull DC-DC converter, cascaded with a full-bridge inverter. Three strategies are proposed(More)
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