Abstract: A structural member having sufficient durability against plasma is provided. The structural member 10 includes a base material 100 and a protective film 200 covering the surface 110 of the base material 100. The protective film 200 includes ytterbium oxide as a main component. In a diffraction pattern provided by analyzing the protective film 200 using X-ray diffraction, when the maximum intensity of the peak attributed to the (401) plane of a monoclinic crystal structure is defined as PM, and the maximum intensity of the peak attributed to the (222) plane of a cubic crystal structure is defined as PC, the structural member 10 satisfies PM/PC >0.38.

Abstract: A structural member having sufficient durability against plasma is provided. The structural member 10 includes a base material 100 and a protective film 200 covering the surface 110 of the base material 100. The protective film 200 includes a crystal including ytterbium oxide as a main component and the crystal has a lattice constant of 10.530×10?10 m or more.

Abstract: A structural member having sufficient durability against plasma is provided. The structural member 10 includes a base material 100 and a protective film 200 covering the surface 110 of the base material 100. The protective film 200 includes ytterbium oxide as a main component and has an indentation hardness of greater than 8.6 GPa.

Abstract: Provided is a flush toilet device in which flushing can be effectively performed with small amount of flush water by accurately setting opening times for individual drain valves. A flush toilet device (1) of the present invention includes a flush toilet main body (2), a flush water tank (4), a first drain valve (10) configured to control flush water from a rim spout port (2d) by opening and closing a first drain port (4b) provided in the flush water tank, a second drain valve (12) configured to control flush water from a jet spout port (2e) by opening and closing a second drain port (4c) provided in the flush water tank, and a hydraulic drive mechanism (16) configured to open the first or second drain valve by using water supply pressure of flush water supplied from a tap water supply line to the flush water tank.

Abstract: A siphon jet-type flush toilet apparatus includes a bowl, a drain trap conduit, a jet water spout port, a pressure pump, a line sensor that detects an object fallen into the bowl, and a control unit that determines whether the object is solid waste or floating waste. The control unit controls the pressure pump such that first jet water ejection is performed through the jet water spout port at a first flow rate for inducing siphonage and such that second jet water ejection is subsequently performed through the jet water spout port at a second flow rate lower than the first flow rate. The control unit controls the pressure pump such that the duration of the first jet water ejection is shorter when the object is determined to be floating waste than when the object is determined to be solid waste.

Abstract: A flush toilet is a siphon jet flush toilet that includes a bowl, a discharge trap conduit that includes an ascending conduit extending upward, a jet spout port configured to spout flush water toward an inlet of the discharge trap conduit, and a jet water conduit configured to guide flush water to the jet spout port, in which in a flow channel cross-section of the ascending conduit of the discharge trap conduit, a narrowed portion that narrows a flow channel in which the flush water flows is provided in an upper-side flow channel located above a center line of the discharge trap conduit in an up-down direction, and a flow channel cross-sectional area of the upper-side flow channel is smaller than a flow channel cross-sectional area of a lower-side flow channel located below the center line.

Abstract: A structural member 10 includes a substrate 100 and a passivation film 200 covering the surface 110 of the substrate 100. The passivation film 200 includes yttria as a main component, and the full width at half maximum of the peak at a wavenumber of approximately 370 cm?1 in the Raman spectrum of the passivation film 200 obtained by Raman spectroscopy is 23 cm?1 or more.

Abstract: A wall-mounted flush toilet includes a toilet main body fixed to a wall; and an illuminating device attached to the toilet main body, the illuminating device being configured to emit light to a floor surface, wherein the toilet main body includes a bowl, a discharge trap having an inlet connected below the bowl to discharge waste in the bowl, a skirt configured to cover sides of each of the bowl and the discharge trap, and a rear wall part formed behind the skirt and fixed to the wall, the toilet main body being disposed above a floor surface, and the illuminating device is provided within an internal space provided behind the lowermost end of the discharge trap and above a lower end of the skirt.

Abstract: A toilet system includes: a toilet seat; a sensor configured to measure a physical quantity which reflects blood flow conditions of a user; a health index calculator configured to calculate a plurality of health indices based on measurement results of the sensor; a health index output part configured to output the plurality of health indices which has been calculated; a timer configured to measure a seating time; and a controller configured to control an output manner of the health index output part based on measurement results of the timer. When the seating time is not shorter than a first required time but shorter than a second required time, the first health index is outputted, but the second health index is stopped to be outputted. When the seating time is not shorter than the second required time, both the first health index and the second health index are outputted.

Abstract: A wall-mounted flush toilet includes a ceramic toilet main body including a bowl configured to receive waste and a discharge trap having an inlet connected to a lower part of the bowl and configured to discharge waste from within the bowl, the ceramic toilet main body further includes a skirt that covers outer shells of the bowl and the discharge trap from sides of the outer shells and a rear end formed rearward of the skirt and configured to be fixed to a wall, and the rear end includes a firing pedestal that functions as a pedestal grounded during a firing process in a ceramic molding process.

Abstract: A siphon jet flush toilet comprises: a bowl; a rim spout port suppling flush water to the bowl; a discharge trap conduit; a jet spout port spouting flush water toward an inlet of the discharge trap conduit; a reservoir tank including a jet spouting discharge valve and storing flush water; a jet water conduit configured to guide the flush water in the reservoir tank to the jet spout port; and a controller being configured to control a rim spouting in which the flush water is spouted from the rim spout port and a jet spouting in which the flush water is spouted from the jet spout port, wherein the jet spouting discharge valve includes a valve body, the valve body being arranged at a position that is lower than an upper surface of the bowl and higher than a seal water level, and before opening the jet spouting discharge valve, the flush water is supplied to the jet water conduit.

Abstract: A structural member 10 includes a substrate 100 and a passivation film 200 covering the surface of the substrate 100. The passivation film 200 includes lanthanum yttrium oxide as a main component.

Abstract: A structural member 10 includes a substrate 100 and a passivation film 200 covering the surface of the substrate 100. The passivation film 200 includes lanthanum zirconium oxide as a main component and has an indentation hardness of more than 7.2 GPa.

Abstract: A structural member 10 includes a substrate 100 and a passivation film 200 covering the surface 110 of the substrate 100. The passivation film 200 includes a crystal including lanthanum zirconium oxide as a main component and the crystal has a lattice constant of 10.830×10?10 m or more.

Abstract: An abnormality detection system according to an embodiment has an acquisition unit that acquires information that indicates a tendency of a usage state of one use item that is provided as an item for use that is executed by a user of a toilet, and a determination unit that determines that an abnormality concerning the one use item occurs in a case where a tendency of the usage state of the one use item is separated from a use tendency of the one use item in past.

Abstract: A toilet device includes a case and a deodorizing device. The deodorizing device includes a first opening part, a second opening part, a third opening part, a suction fan, a first deodorizing path part, and a second deodorizing path part. The first opening part is configured to suction air outside the case. The second opening part is configured to suction air inside the case. The third opening part is configured to exhaust out of the case air suctioned by the first and second openings. The suction fan is configured to suction the air outside and inside the case through the first and second opening parts. The first deodorizing path part connects the suction fan with the first and second opening parts. The second deodorizing path part connects the suction fan and the third opening part. The second opening part has a smaller opening area than the first opening part.

Abstract: An electrostatic chuck includes: a dielectric substrate on which at least one first gas hole is formed; a base plate on which at least one second gas hole is formed; and a joining layer which is provided between the dielectric substrate and the base plate and which is formed of an insulating material. A first opening being an end of the at least one first gas hole is formed on a surface of the dielectric substrate. A second opening being an end of the at least one second gas hole is formed at a position which differs from the at least one first opening on a surface of the base plate. A communication groove is formed on the surface of the base plate.

Abstract: A structural member 10 includes a base material 100 and a protective film 200 covering a surface 110 of the base material 100. When, in a cross-section of the protective film 200 cut perpendicularly to the surface 110, a proportion of pores per unit area is defined as porosity, the porosity in a first portion 201 that is a portion of the cross-section is lower than the porosity in a second portion 202 that is a portion of the cross-section closer to the base material 100 side thereof than the first portion 201.

Abstract: A water discharge device that discharges water while reciprocally vibrating the water. The water discharge device includes a water discharge device body and a vibration generating element. The vibration generating element includes a water supply path, a collision portion, a vortex street path, and a discharge path. The vortex street path is formed by fitting an upstream fitting portion of an upstream member and a downstream fitting portion of a downstream member to each other. The upstream member or the downstream member is provided with a vibration reducing portion that reduces vibration of the upstream member due to vortices generated in the vortex street path. The upstream fitting portion or the downstream fitting portion is elastically deformed by a predetermined amount due to the provision of the vibration reducing portion.

Abstract: To provide an electrostatic chuck which has a configuration in which a conductive member is arranged between a dielectric substrate and a base plate, and can be easily manufactured. An electrostatic chuck 10 includes a dielectric substrate 100, an RF electrode 140 provided inside the dielectric substrate 100, a base plate 200 made of metal and joined to the dielectric substrate 100, and a conductive member 400 configured to electrically connect the RF electrode 140 and the base plate 200 to each other. A recessed section 270 which accommodates a part of the conductive member 400 is formed in a surface 210 on the dielectric substrate 100 side of the base plate 200. In this electrostatic chuck 10, a length (L2) of a part of the conductive member 400 accommodated in the recessed section 270 is ½ or more of the entire length (L1) of the conductive member 400.