Abstract: A measurement device measures changes over time of a concentration of a measurement substance that occurs due to a reaction occurring as a result of a solution containing the analyte being dripped onto an electrode, by measuring an electric current that occurs due to electrolysis of the measurement substance. The measurement device applies a first voltage over a first application time period. The measurement device measures a first electric current flowing due to an application of the first voltage. The measurement device applies a second voltage over a second application time period. The measurement device a second electric current flowing due to an application of the second voltage. The measurement device uses the first electric current to normalize the second electric current and measures a concentration of the measurement substance that has changed based on the reaction or a concentration of the analyte that has changed based on the reaction.

Abstract: A manufacturing method of a reactor includes: a coil mold step of forming a coil mold in which a first resin is molded to cover at least part of a coil; and a main body mold step of forming a main body mold in which a second resin is molded to cover at least part of an assembly body in which the coil, the coil mold, two I-cores, and an O-core surrounding the coil and the coil mold are assembled. In the coil mold step, a gap plate configured to fill a gap between positions where the two I-cores are placed is formed by molding with the first resin. In the main body mold step, gap plates each configured to fill a gap between the O-core and a corresponding one of the I-cores are formed by molding with the second resin.

Abstract: A hybrid molded body according to this embodiment is a hybrid molded body in which a prepreg made of a fiber reinforced plastic and a resin are integrally molded, and the resin includes a covering part that covers at least a part of the prepreg in the boundary part of the prepreg and the resin.

Abstract: A manufacturing method of a reactor includes: a coil mold step of forming a coil mold in which a first resin is molded to cover at least part of a coil; and a main body mold step of forming a main body mold in which a second resin is molded to cover at least part of an assembly body in which the coil, the coil mold, two I-cores, and an O-core surrounding the coil and the coil mold are assembled. In the coil mold step, a gap plate configured to fill a gap between positions where the two I-cores are placed is formed by molding with the first resin. In the main body mold step, gap plates each configured to fill a gap between the O-core and a corresponding one of the I-cores are formed by molding with the second resin.