Abstract: The present invention is a catalyst comprising: (i) a compound comprising at least one first metal element selected from boron, magnesium, zirconium, and hafnium, and (ii) an alkali metal element, wherein the compound and the alkali metal element are supported on a carrier having silanol groups, an average particle size of the compound of the first metal element is 0.4 nm or more and 50 nm or less, the catalyst satisfies the following formula (1): 0.9 × 10 ? - 21 ? ( g / number ) ? ? X / ( Y × Z ) < 10.8 × 10 ? - 21 ? ( g / number ) , formula ? ( 1 ) in which X is a molar ratio of the alkali metal element to the at least one first metal element in the catalyst, Y is a BET specific surface area of the catalyst (m2/g), and Z is a number of the silanol groups per unit area (number/nm2).

Abstract: A piezoelectric sensor includes: a piezoelectric element which is long and which includes a first electrode, a second electrode, and a piezoelectric body interposed between the first and second electrodes; and a laminate film which is long and which surrounds the piezoelectric element. The laminate film includes a wide portion whose length along a shorter side direction of the laminate film is not less than twice a length of the piezoelectric element which length is along a shorter side direction of the piezoelectric element.

Abstract: A seat provided in a moving body includes: at least one piezoelectric sensor including a first surface located on a side of a body of a sitter and a second surface located opposite the first surface, the piezoelectric sensor configured to sense heartbeat-induced body vibrations of the sitter through the first surface; and at least one supporting member disposed inside a recess which is formed in at least one of a seating surface of the seat and a back surface of the seat, the supporting member supporting the piezoelectric sensor under the second surface of the piezoelectric sensor. A gap is provided in at least part of an area between a surface of the supporting member and an inner wall of the recess so that the surface of the supporting member and the inner wall of the recess do not come into contact with each other.

Abstract: A seat provided in a moving body includes: at least one piezoelectric sensor including a first surface located on a side of a body of a sitter and a second surface located opposite the first surface, the piezoelectric sensor configured to sense heartbeat-induced body vibrations of the sitter through the first surface; and at least one supporting member disposed inside a recess which is formed in at least one of a seating surface of the seat and a back surface of the seat, the supporting member supporting the piezoelectric sensor under the second surface of the piezoelectric sensor. A gap is provided in at least part of an area between a surface of the supporting member and an inner wall of the recess so that the surface of the supporting member and the inner wall of the recess do not come into contact with each other.

Abstract: A self-diagnostic device for an acceleration or angular-velocity sensor includes a diagnosis control unit, an integration unit, and a determination unit. The diagnosis control unit provides pseudo acceleration or angular velocity to a sensor main body for detecting acceleration or angular velocity, by applying a test signal having prescribed magnitude to the sensor main body. The integration unit integrates a sensor signal outputted from the sensor main body in response to the test signal. The determination unit determines whether or not an integration value obtained at an elapse of prescribed integration time from a time point when the integration unit starts integrating the sensor signal falls within a prescribed normal range.

Abstract: A semiconductor device includes: a first level detecting circuit for detecting a voltage level at a control terminal after a prescribed time period from when a power supply voltage is supplied to a power supply terminal, a control unit for selecting in which operation mode among a plurality of operation modes the semiconductor device operates, based on a result of detection by the first level detecting circuit; and a regulator for generating an internal power supply voltage based on the power supply voltage supplied to the power supply terminal. The first level detecting circuit and the control unit receive the internal power supply voltage as an operating power supply voltage. In an operation mode, among the plurality of operation modes, where a power supply voltage having a level different from that of a power supply voltage in other operation modes is supplied to the power supply terminal, the control unit performs data processing by using the power supply voltage supplied to the power supply terminal.

Abstract: A semiconductor device includes: a first level detecting circuit for detecting a voltage level at a control terminal after a prescribed time period from when a power supply voltage is supplied to a power supply terminal, a control unit for selecting in which operation mode among a plurality of operation modes the semiconductor device operates, based on a result of detection by the first level detecting circuit; and a regulator for generating an internal power supply voltage based on the power supply voltage supplied to the power supply terminal. The first level detecting circuit and the control unit receive the internal power supply voltage as an operating power supply voltage. In an operation mode, among the plurality of operation modes, where a power supply voltage having a level different from that of a power supply voltage in other operation modes is supplied to the power supply terminal, the control unit performs data processing by using the power supply voltage supplied to the power supply terminal.

Abstract: A self-diagnostic device for an acceleration or angular-velocity sensor includes a diagnosis control unit, an integration unit, and a determination unit. The diagnosis control unit provides pseudo acceleration or angular velocity to a sensor main body for detecting acceleration or angular velocity, by applying a test signal having prescribed magnitude to the sensor main body. The integration unit integrates a sensor signal outputted from the sensor main body in response to the test signal. The determination unit determines whether or not an integration value obtained at an elapse of prescribed integration time from a time point when the integration unit starts integrating the sensor signal falls within a prescribed normal range.

Abstract: A semiconductor device includes: a first level detecting circuit for detecting a voltage level at a control terminal after a prescribed time period from when a power supply voltage is supplied to a power supply terminal, a control unit for selecting in which operation mode among a plurality of operation modes the semiconductor device operates, based on a result of detection by the first level detecting circuit; and a regulator for generating an internal power supply voltage based on the power supply voltage supplied to the power supply terminal. The first level detecting circuit and the control unit receive the internal power supply voltage as an operating power supply voltage. In an operation mode, among the plurality of operation modes, where a power supply voltage having a level different from that of a power supply voltage in other operation modes is supplied to the power supply terminal, the control unit performs data processing by using the power supply voltage supplied to the power supply terminal.