Abstract: An authentication method is used by an automated driving system that includes a vehicle and an external device, the external device communicating with the vehicle to cause the vehicle to implement automated driving. The vehicle holds a first certificate that certifies validity of the vehicle. The external device holds a second certificate that certifies validity of the external device. The authentication method includes: validating a third certificate that certifies validity of a combination of the vehicle and the external device, in accordance with a result of device authentication performed between the vehicle and the external device by reference to the first certificate and the second certificate.

Abstract: A fire detection apparatus 1A includes a heat detection unit 110A provided such that a part of the heat detection unit 110A is accommodated in an outer cover 20A and another part of the heat detection unit 110A is exposed to an outside of the fire detection apparatus 1A through an insertion hole 120A formed in a top surface portion 22A, and a guard portion 130A which is provided to cover a periphery of the insertion hole 120A and another part of the heat detection unit 110A in the top surface portion 22A and has a plurality of ribs, in which a material of a rib corresponding to a first guard side rib 131A among the plurality of ribs is made different from a material of some other ribs, or a shape of the first guard side rib 131A among the plurality of ribs is made different from a shape of some other ribs.

Abstract: A fire detection apparatus 1A includes a heat detection unit 110A provided such that a part of the heat detection unit 110A is accommodated in an outer cover 20A and another part of the heat detection unit 110A is exposed to an outside of the fire detection apparatus 1A through an insertion hole 120A formed in a top surface portion 22A, and a guard portion 130A which is provided to cover a periphery of the insertion hole 120A and another part of the heat detection unit 110A in the top surface portion 22A and has a plurality of ribs, in which a material of a rib corresponding to a first guard side rib 131A among the plurality of ribs is made different from a material of some other ribs, or a shape of the first guard side rib 131A among the plurality of ribs is made different from a shape of some other ribs.

Abstract: A rotor for a thrust magnetic bearing is a rotor (51) of a thrust magnetic bearing (50) supporting a rotary shaft (30) that is driven to rotate by a motor (20) in an axial direction, and has a rotor passage (93) that penetrates the rotor (51) and constitutes part of a refrigerant passage (Z) for sending a refrigerant to the motor (20). It is preferable that the rotor passage (93) includes an opening (93b) on one side in the axial direction and an opening (93a) on the other side in the axial direction, and the opening (93b) on the one side is located radially outside (Q2) of the opening (93a) on the other side.

Abstract: A quartz glass crucible 1 includes: a quartz glass crucible body 10 having a cylindrical side wall portion 10a, a curved bottom portion 10b, and a corner portion 10c which has a larger curvature than that of the bottom portion 10b and connects the side wall portion 10a and the bottom portion 10b to each other; and an inner-surface coating film 13A which contains a crystallization accelerator and is formed on an inner surface 10i of the quartz glass crucible body 10, in which the inner surface 10i of the quartz glass crucible body 10 is under compressive stress. The quartz glass crucible has high durability even at a high temperature during a single crystal pull-up step and is capable of reducing a generation ratio of pinholes in a silicon single crystal.

Abstract: A fire detection apparatus 1F for detecting a fire in a monitored area, the fire detection apparatus 1F being attached to an installation surface of an installation object, the fire detection apparatus 1F comprises a detection space 60F in which detection of a detection target is performed; an incidence suppressing unit that inhibits ambient light from entering the detection space 60F, the incidence suppressing unit being able to allow a gas containing the detection target to flow into and out of the incidence suppressing unit; an accommodating unit that accommodates the incidence suppressing unit, the accommodating unit being able to allow the gas to flow into and out of the accommodating unit; and a light shielding wall 140F provided to surround the incidence suppressing unit on an inside of the accommodating unit, wherein the incidence suppressing unit includes a first incidence suppressing unit that covers a part of the detection space 60F, and a second incidence suppressing unit provided on an installati

Abstract: A rotor for a thrust magnetic bearing is a rotor (51) of a thrust magnetic bearing (50) supporting a rotary shaft (30) that is driven to rotate by a motor (20) in an axial direction, and has a rotor passage (93) that penetrates the rotor (51) and constitutes part of a refrigerant passage (Z) for sending a refrigerant to the motor (20). It is preferable that the rotor passage (93) includes an opening (93b) on one side in the axial direction and an opening (93a) on the other side in the axial direction, and the opening (93b) on the one side is located radially outside (Q2) of the opening (93a) on the other side.

Abstract: A rotary fluid machine includes a casing, a partition member that partitions a space in the casing into a first space and a second space, and a rotary shaft provided in the casing. The rotary shaft is rotatably supported. The partition member includes a thrust magnetic bearing that supports the rotary shaft in an axial direction.

Abstract: A quartz glass crucible includes a crucible base body having silica glass and a coating film containing a crystallization accelerator and formed on the inner surface of the crucible base body. The coating film has a peel strength of 0.3 kN/m or more.

Abstract: A quartz glass crucible includes a crucible base body including silica glass and a coating film containing a crystallization accelerator and formed on the inner surface of the crucible base body. The average carbon concentration in the coating film, and the crucible base body within a range of 0 ?m or more and 300 ?m or less in depth from the inner surface of the crucible base body is 1.0×1012 atoms/cc or more and 3.0×1019 atoms/cc or less.

Abstract: A quartz glass crucible (1) includes: a crucible body (10) made of silica glass; and a crystallization-accelerator-containing layer (13) formed on an outer surface of the crucible body (10). A concentration of a crystallization accelerator contained in the crystallization-accelerator-containing layer (13) is 1.0×1013 atoms/cm2 or more and 4.8×1015 atoms/cm2 or less. The quarts glass crucible is intended to be capable of not only enduring a single crystal pulling-up process that takes a very long time, such as multi-pulling, but also stably controlling the oxygen concentration and crystal diameter of a silicon single crystal by eliminating a gap between the carbon susceptor and the crucible as much as possible.

Abstract: A quartz glass crucible has, from an inner surface side toward an outer surface side of the crucible, an inner transparent layer, a bubble layer, an outer transparent layer, and a crystallization accelerator-containing layer. An outer transition layer where a bubble content decreases from the bubble layer toward the outer transparent layer is provided at a boundary between the bubble layer and the outer transparent layer, and a thickness of the outer transition layer is 0.1 mm or more and 8 mm or less.

Abstract: A stator-core fixing structure fixes a stator core to a housing. The stator-core fixing structure includes a plurality of outer peripheral surface portions, and a plurality of inner peripheral surface portions. The plurality of outer peripheral surface portions are included in an outer peripheral surface of the stator core and have outer diameters different from each other. The plurality of inner peripheral surface portions are included in an inner peripheral surface of the housing and have inner diameters different from each other. Each of the plurality of outer peripheral surface portions corresponds to a corresponding one of the plurality of inner peripheral surface portions. Each of the plurality of outer peripheral surface portions contacts the corresponding one of the plurality of inner peripheral surface portions.

Abstract: A centrifugal compressor includes a tubular shape casing extending in an axial direction, a motor stator fixed to an inside of the casing in a radial direction, a shaft disposed inside of the motor stator in the radial direction and extending in the axial direction, a motor rotor fixed to the shaft and facing the motor stator with a gap in the radial direction, a compression unit fixed to an end portion of the shaft on one side in the axial direction, a first thrust magnetic bearing disposed between the motor rotor and the impeller in the axial direction, and a second thrust magnetic bearing disposed on an other side in the axial direction relative to the motor rotor. A magnetic attraction force of the second thrust magnetic bearing toward the other side is larger than a magnetic attraction force of the first thrust magnetic bearing toward the one side.

Abstract: A quartz glass crucible (1) includes: a crucible body (10) made of silica glass; and a crystallization-accelerator-containing layer (13) formed on an outer surface of the crucible body (10). A concentration of a crystallization accelerator contained in the crystallization-accelerator-containing layer (13) is 1.0×1013 atoms/cm2 or more and 4.8×1015 atoms/cm2 or less. The quarts glass crucible is intended to be capable of not only enduring a single crystal pulling-up process that takes a very long time, such as multi-pulling, but also stably controlling the oxygen concentration and crystal diameter of a silicon single crystal by eliminating a gap between the carbon susceptor and the crucible as much as possible.

Abstract: A quartz glass crucible 1 includes: a quartz glass crucible body 10 having a cylindrical side wall portion 10a, a curved bottom portion 10b, and a corner portion 10c which has a larger curvature than that of the bottom portion 10b and connects the side wall portion 10a and the bottom portion 10b to each other; and an inner-surface coating film 13A which contains a crystallization accelerator and is formed on an inner surface 10i of the quartz glass crucible body 10, in which the inner surface 10i of the quartz glass crucible body 10 is under compressive stress. The quartz glass crucible has high durability even at a high temperature during a single crystal pull-up step and is capable of reducing a generation ratio of pinholes in a silicon single crystal.

Abstract: In an exemplary embodiment, a quartz glass crucible 1 includes: a cylindrical crucible body 10 which has a bottom and is made of quartz glass; and crystallization-accelerator-containing coating films 13A and 13B which are formed on surfaces of the crucible body 10 so as to cause crystallization-accelerator-enriched layers to be formed in the vicinity of the surfaces of the crucible body 10 by heating during a step of pulling up a silicon single crystal by a Czochralski method. The quartz glass crucible is capable of withstanding a single crystal pull-up step undertaken for a very long period of time, such as multi-pulling, and a manufacturing method thereof.

Abstract: A quartz glass crucible 1 includes: a quartz glass crucible body 10 having a cylindrical side wall portion 10a, a curved bottom portion 10b, and a corner portion 10c which has a larger curvature than that of the bottom portion 10b and connects the side wall portion 10a and the bottom portion 10b to each other; and an inner-surface coating film 13A which contains a crystallization accelerator and is formed on an inner surface 10i of the quartz glass crucible body 10, in which the inner surface 10i of the quartz glass crucible body 10 is under compressive stress. The quartz glass crucible has high durability even at a high temperature during a single crystal pull-up step and is capable of reducing a generation ratio of pinholes in a silicon single crystal.

Abstract: A turbo compressor is configured to be provided in a refrigerant circuit in which a refrigeration cycle is performed and to compress a refrigerant. The turbo compressor includes an impeller, an electric motor, a drive shaft coupled to the impeller and the electric motor, and at least one bearing holder supporting the drive shaft via a first bearing. The bearing holder includes a refrigerant passage through which a refrigerant flows, and a plurality of injection ports through which a refrigerant is injected from the refrigerant passage toward a coil end of the electric motor. The injection ports are distributed in a circumferential direction of the bearing holder.

Abstract: A bearing structure includes a drive shaft that extends in a horizontal direction, a touchdown bearing, and a bearing housing. The drive shaft is supported by a magnetic bearing. The touchdown bearing includes a rolling member interposed between an outer ring and an inner ring. The bearing housing supports the touchdown bearing from an outer periphery. At least one of an outer peripheral surface of the drive shaft, an inner peripheral surface of the inner ring, an outer peripheral surface of the outer ring, and an inner peripheral surface of the bearing housing includes a recess in a region overlapping the rolling member in a bearing radial direction.