Abstract: The concentration of a component in sample gas is accurately detected. A gas detection apparatus includes a collector, a first gas sensor, and a second gas sensor. The collector collects sample gas including first detected gas and second detected gas. Each of the first gas sensor and the second gas sensor is a gas sensor capable of detecting both the first detected gas and the second detected gas. The first gas sensor and the second gas sensor are different from each other in the relative relationship between the detection sensitivity to the first detected gas and the detection sensitivity for the second detected gas.

Abstract: A gas collection device is installed in a toilet including a toilet seat and a toilet bowl. The gas collection device includes a flow path connected to a predetermined tank, and an introduction portion that introduces a sample gas into the flow path. The introduction portion is located between the toilet seat and the toilet bowl, or located inside or above the toilet seat. The introduction portion does not protrude toward an inside of the toilet bowl from a rim portion of the toilet bowl when located between the toilet seat and the rim portion. The introduction portion does not protrude toward the inside of the toilet bowl from the toilet seat when located inside or above the toilet seat.

Abstract: A gas detection system includes a sensor unit that outputs a voltage corresponding to a concentration of a specific gas, a supply unit, and a control unit. The supply unit is capable of supplying a sample gas and a purge gas to the sensor unit. The control unit controls the supply unit to alternately supply the sample gas and the purge gas to the sensor unit. The control unit acquires a voltage waveform output by the sensor unit and detects a type and concentration of a gas contained in the sample gas, using a multiple regression analysis using characteristics of the voltage waveform as explanatory variables.

Abstract: A gas detection device includes a flow path in which a gas flows in a predetermined direction, at least one first-type gas sensor that includes a heater for heating the gas, and at least one second-type gas sensor that does not include a heater for heating the gas. The first-type gas sensor is positioned upstream of the second-type gas sensor in the flow path.

Abstract: To improve accuracy of gas analysis. An analysis apparatus is placed on a toilet bowl and collects and analyzes a sample gas in the toilet bowl. The analysis apparatus includes a gas flow generator including a sucker and a discharger and generating a gas flow of the sample gas passing through the inside of the toilet bowl, and an analyzer that analyzes a component contained in the sample gas.

Abstract: A chip resistor includes an insulating substrate, a resistance element, and an electrode. The resistance element includes Cr, Si, and N and is disposed on the insulating substrate. The electrode includes at least one refractory metal and is disposed on the resistance element. An atomic ratio of Si to Cr in the resistance element is greater than or equal to ? and less than or equal to 4 at least at a center of the resistance element in a thickness direction defined with respect to the resistance element. An atom percentage of N in the resistance element is lower than or equal to 50 atom % at least at the center of the resistance element in the thickness direction.

Abstract: A gas supply and discharge adapter has an opening through which a gas flows into and out of a gas sensor, an inflow port through which the gas flows into the opening, and an outflow port through which the gas flows out of the opening. The inflow port and the outflow port are positioned independently of each other. When the inflow port and the opening are viewed in plan through the gas supply and discharge adapter, the inflow port partially overlaps the opening.

Abstract: A gas detection device includes a flow path in which a gas flows in a predetermined direction, at least one first-type gas sensor that includes a heater for heating the gas, and at least one second-type gas sensor that does not include a heater for heating the gas. The first-type gas sensor is positioned upstream of the second-type gas sensor in the flow path.

Abstract: A gas detection system includes a first sensor unit that outputs a voltage corresponding to a concentration of a specific gas, a storage tank capable of storing a sample gas or a purge gas to be supplied to the first sensor unit, and a control unit. The control unit detects a type and a concentration of a gas contained in the sample gas on the basis of a detection result of the first sensor unit. The control unit sets a collection period during which a gas in a predetermined space is collected into the storage tank as the sample gas or the purge gas and a supply period during which the sample gas or the purge gas is supplied to the first sensor unit such that the collection period and the supply period fall in different time slots.

Abstract: A gas detection system includes a sensor unit that outputs a voltage corresponding to a concentration of a specific gas, a supply unit, and a control unit. The supply unit is capable of supplying a sample gas and a purge gas to the sensor unit. The control unit controls the supply unit to alternately supply the sample gas and the purge gas to the sensor unit. The control unit acquires a voltage waveform output by the sensor unit and detects a type and concentration of a gas contained in the sample gas, using a multiple regression analysis using characteristics of the voltage waveform as explanatory variables.

Abstract: A gas collection device is installed in a toilet including a toilet seat and a toilet bowl. The gas collection device includes a flow path connected to a predetermined tank, and an introduction portion that introduces a sample gas into the flow path. The introduction portion is located between the toilet seat and the toilet bowl, or located inside or above the toilet seat. The introduction portion does not protrude toward an inside of the toilet bowl from a rim portion of the toilet bowl when located between the toilet seat and the rim portion. The introduction portion does not protrude toward the inside of the toilet bowl from the toilet seat when located inside or above the toilet seat.

Abstract: A light emitting element housing package of the present disclosure includes a base part including a first surface including a first recessed part for mounting a light emitting element. Surface roughness Sa of at least such a region of a bottom surface of the first recessed part that is opposite to a light emitting element mounted on the first recessed part is smaller than surface roughness Sa of a region other than the first recessed part of the first surface. Further, a light emitting device of the present disclosure includes the light emitting element housing package and a light emitting element housed in the light emitting element housing package. Further, a light emitting module of the present disclosure includes the light emitting device and a module substrate on which the light emitting device is mounted.

Abstract: A multipiece element storage package of the present disclosure includes: a mother substrate which includes first element storage package regions, second element storage package regions, a dummy region, a first surface, and a second surface; a first stem electrode disposed in a part of the dummy region which part is in the first surface; and a second stem electrode disposed on the second surface. The first element storage package regions and the second element storage package regions each include a frame body disposed on the first surface, a first wiring conductor disposed on the first surface, and including one end located inside the frame body and the other end connected to the first stem electrode, and a second wiring conductor including one end which is located on the first surface and inside the frame body and the other end which is connected to the second stem electrode.

Abstract: A multipiece element storage package of the present disclosure includes: a mother substrate which includes first element storage package regions, second element storage package regions, a dummy region, a first surface, and a second surface; a first stem electrode disposed in a part of the dummy region which part is in the first surface; and a second stem electrode disposed on the second surface. The first element storage package regions and the second element storage package regions each include a frame body disposed on the first surface, a first wiring conductor disposed on the first surface, and including one end located inside the frame body and the other end connected to the first stem electrode, and a second wiring conductor including one end which is located on the first surface and inside the frame body and the other end which is connected to the second stem electrode.

Abstract: A resin composition containing: an epoxy resin (A) represented by the following formula (1); and a cyanate compound (B), wherein Ar represents a polycyclic aromatic group, R represents a hydrogen atom or a methyl group, G represents a glycidyl group, and n represents an integer of 0 to 15.

Abstract: The resin composition according to the present invention is a resin composition including a cyanate compound (A) and/or a maleimide compound (B), and an inorganic filler (C), wherein the inorganic filler (C) includes a boron nitride particle aggregate including primary hexagonal boron nitride particles, wherein (0001) planes of the primary hexagonal boron nitride particles are stacked on top of each other to thereby form the boron nitride particle aggregate.

Abstract: A light emitting element housing package of the present disclosure includes a base part including a first surface including a first recessed part for mounting a light emitting element. Surface roughness Sa of at least such a region of a bottom surface of the first recessed part that is opposite to a light emitting element mounted on the first recessed part is smaller than surface roughness Sa of a region other than the first recessed part of the first surface. Further, a light emitting device of the present disclosure includes the light emitting element housing package and a light emitting element housed in the light emitting element housing package. Further, a light emitting module of the present disclosure includes the light emitting device and a module substrate on which the light emitting device is mounted.

Abstract: The resin composition according to the present invention is a resin composition including a cyanate compound (A) and/or a maleimide compound (B), and an inorganic filler (C), wherein the inorganic filler (C) includes a boron nitride particle aggregate including primary hexagonal boron nitride particles, wherein (0001) planes of the primary hexagonal boron nitride particles are stacked on top of each other to thereby form the boron nitride particle aggregate.

Abstract: A resin composition containing: an epoxy resin (A) represented by the following formula (1); and a cyanate compound (B), wherein Ar represents a polycyclic aromatic group, R represents a hydrogen atom or a methyl group, G represents a glycidyl group, and n represents an integer of 0 to 15.

Abstract: A method for producing a crystal, according to the present invention, where the lower surface 4B of a seed crystal 4 which is rotatably arranged and made of silicon carbide is brought into contact with a solution 5 of silicon solvent containing carbon in a crucible 6 which is rotatably arranged and the seed crystal 4 is pulled up and a crystal of silicon carbide is grown from the solution 5 on the lower surface 4B of the seed crystal 4, comprising the steps of bringing the lower surface 4B of the seed crystal 4 into contact with the solution 5 in a contact step, rotating the seed crystal 4 in a seed crystal rotation step, rotating the crucible 6 in a crucible rotation step, and stopping rotation of the crucible 6, while the seed crystal 4 is rotated in the state in which the lower surface 4B of the seed crystal 4 is in contact with the solution 5, in a deceleration step.