Abstract: An analysis system includes an analysis device; a first pipe including a first end portion, a second end portion, and a first location between the first end portion and the second end portion; a first valve between the second end portion and the analysis device; a gas supply source supplying purge gas; a second pipe including a third end portion connected to the first location, and a fourth end portion connected to the gas supply source; a second valve in the second pipe; a third pipe including a fifth end portion, a sixth end portion, and a second location between the fifth end portion and the sixth end portion; a third valve between the sixth end portion and the analysis device; a fourth pipe including a seventh end portion connected to the second location, and an eighth end portion connected to the gas supply source; and a fourth valve.

Abstract: A loudspeaker device includes: a loudspeaker unit; and a casing that defines an internal space in which the loudspeaker unit is housed. The casing includes a baffle board to which the loudspeaker unit is fixed in an orientation that exposes a diaphragm of the loudspeaker unit. The baffle board includes one or more through-holes that establish communication between an external space outside of the casing and the internal space. Sound that is emitted from the one or more through-holes has a wavelength with an inverted phase relative to sound emitted directly from the diaphragm to the external space.

Abstract: An acoustic lens includes an opening and a plurality of partition plates. A sound wave to be emitted from a loudspeaker is input to the opening. The plurality of partition plates form a plurality of sound paths through which the sound wave input to the opening passes. The plurality of partition plates include a first control mechanism and a second control mechanism. The first control mechanism controls directivity, in a first direction, of the sound wave that has passed through the plurality of sound paths and is output to outside. The second control mechanism controls directivity, in a second direction intersecting the first direction, of the sound wave that has passed through the plurality of sound paths and is output to outside.

Abstract: An acoustic lens includes: a plurality of first partition plates aligned apart from each other in the traveling direction of sound waves to be emitted from a loudspeaker. Each of the plurality of first partition plates includes holes through which the sound waves pass. The lengths of the plurality of first partition plates in a first direction are mutually different.

Abstract: An acoustic device includes a first acoustic unit and a second acoustic unit. The first acoustic unit includes: a first loudspeaker module that includes a first sound emitting surface provided to face the second acoustic unit; and a first sound absorbing module that includes a first sound absorbing surface provided around the first sound emitting surface to face the second acoustic unit. The second acoustic unit includes: a second loudspeaker module that includes a second sound emitting surface provided to face the first acoustic unit; and a second sound absorbing module that includes a second sound absorbing surface provided around the second sound emitting surface to face the first acoustic unit.

Abstract: A loudspeaker device includes: a first loudspeaker unit; a first cabinet that supports the first loudspeaker unit; a second loudspeaker unit that is disposed on a sound-emitting side of the first loudspeaker unit, and emits sound in a same direction as a direction in which the first loudspeaker unit emits sound; a second cabinet that is disposed between the first loudspeaker unit and the second loudspeaker unit, and supports the second loudspeaker unit; and a resonator that is disposed between the first loudspeaker unit and the second cabinet, and includes an opening that opens toward a diaphragm of the first loudspeaker unit.

Abstract: An audio device includes a plurality of reflective components that reflect sound emitted from a loudspeaker unit. The audio device forms a reflective space surrounded by the plurality of reflective components. The audio device includes an acoustic channel that is tube-shaped and includes an opening on one end and a terminating portion on an other end, the one end being connected to a communication hole provided in a reflective component among the plurality of reflective components, and a sound absorbing material disposed at a central portion of a sound path formed by the acoustic channel.

Abstract: Provided is a polyurethane foam having excellent heat resistance and the like. The polyurethane foam is obtained from a material that contains a polyol and a polyisocyanate, in which the polyol contains a polyester polyol, the polyisocyanate contains a diphenylmethane diisocyanate-based isocyanate, it is preferable that the polyester polyol has one or more side chains composed of an alkyl group, and the polyurethane foam may be used as a soundproof material for vehicles.

Abstract: A building material facing a first space includes a structure which is in a plate form and includes at least one opening; a first loudspeaker disposed in a second space across the structure from the first space, in a position opposite to a corresponding one of the at least one opening; and a three-dimensional netlike structure disposed between the structure and the first loudspeaker and configured with a fibrous member three-dimensionally intertwined.

Abstract: Provided is a polyurethane foam having excellent heat resistance and the like. The polyurethane foam is obtained from a material that contains a polyol and a polyisocyanate, in which the polyol contains a polyester polyol, the polyisocyanate contains a diphenylmethane diisocyanate-based isocyanate, it is preferable that the polyester polyol has one or more side chains composed of an alkyl group, and the polyurethane foam may be used as a soundproof material for vehicles.

Abstract: Provided is a polyurethane foam having excellent heat resistance and the like. The polyurethane foam is obtained from a material that contains a polyol and a polyisocyanate, in which the polyol contains a polyester polyol, the polyisocyanate contains a diphenylmethane diisocyanate-based isocyanate, it is preferable that the polyester polyol has one or more side chains composed of an alkyl group, and the polyurethane foam may be used as a soundproof material for vehicles.

Abstract: A parameter estimation method, comprises: acquiring appearance information including a shape information and a position information of at least one package; vibrating the at least one package at least at one position selected in accordance with the appearance information, and acquiring at least one data showing a vibration of the at least one package, and estimating a value of at least one parameter of the at least one package in accordance with a relation between the at least one data and the at least one parameter.

Abstract: According to one embodiment, an ultrasound diagnostic apparatus comprises processing circuitry. The processing circuitry sets one of wavelengths of a plurality of light sources as a reference wavelength, normalize an intensity of light having a wavelength other than the reference wavelength, which is detected by a pair of each light irradiation unit and each optical detector, with an intensity of light having the reference wavelength, calculate a first value for each pair by nonlinear enhancement correction of a normalized light intensity, calculate a second value for the each pair by nonlinear reduction correction of an intensity of light having the reference wavelength detected by the each pair, and calculate an evaluation value based on a value obtained by multiplication of the first value and the second value for the each pair.

Abstract: A metal organic framework is configured to emit fluorescence and deform by interaction with a target molecule. The metal organic framework includes: a metal ion; a quadridentate ligand bonded to the metal ion; and a bidentate ligand bonded to the metal ion.

Abstract: Provided is a loudspeaker device that can improve sound quality. The loudspeaker device includes: a loudspeaker housing; a first loudspeaker unit provided in a first wall of the loudspeaker housing; and an acoustic tube communicating an inside and an outside of the loudspeaker housing to each other. The acoustic tube has a predetermined length, and is accommodated in the loudspeaker housing and is helically shaped.

Abstract: A speaker device includes: a loudspeaker including a diaphragm and a field portion disposed rearwardly of the diaphragm; and a cabinet accommodating the field portion. The loudspeaker also includes a mounting member with which the loudspeaker is mounted to the cabinet, and a mounting plane of the mounting member includes a center of gravity of the loudspeaker.

Abstract: A metal organic framework is configured to emit fluorescence and deform by interaction with a target molecule. The metal organic framework includes: a metal ion; a quadridentate ligand bonded to the metal ion; and a bidentate ligand bonded to the metal ion.

Abstract: A parameter estimation method, comprises: acquiring appearance information including a shape information and a position information of at least one package; vibrating the at least one package at least at one position selected in accordance with the appearance information, and acquiring at least one data showing a vibration of the at least one package, and estimating a value of at least one parameter of the at least one package in accordance with a relation between the at least one data and the at least one parameter.

Abstract: According to one embodiment, an ultrasonic diagnostic apparatus comprises an ultrasonic probe, image generation circuitry, image generation circuitry, at least one light emission circuitry a plurality of optical detection circuits, a slide mechanism and analysis circuitry. The slide mechanism makes at least either the at least one light emission circuitry or the plurality of optical detection circuits slide to change positional relationships between the ultrasonic transmission/reception surface, the at least one light emission circuitry, and the plurality of optical detection circuits. The analysis circuitry analyzes a change in the light intensity detected for each of different positional relationships between the ultrasonic transmission/reception surface, the at least one light emission circuitry, and the plurality of optical detection circuits.

Abstract: According to one embodiment, a sensor includes a transmission/reception device and a processing device. The transmission/reception device is configured to emit a pulse wave having a first frequency toward liquid in a container, to receive a reflection wave of the pulse wave, and to output a first signal. The container includes a part in contact with the liquid. The processing device is capable of outputting strength of a first frequency reflection wave of a first frequency band contained in a second signal and strength of a second frequency reflection wave of a second frequency band contained in a third signal. The third signal is obtained by squaring the second signal. The second signal is obtained by subtracting a fourth signal from the first signal. The fourth signal is obtained by integrating the first signal. The first frequency band includes the first frequency.