Abstract: A forming method of a component for use in a plasma processing apparatus includes irradiating, while supplying a source material of a first ceramic and a source material of a second ceramic different from the first ceramic, an energy beam to the source material of the first ceramic and the source material of the second ceramic.

Abstract: One aspect of a position estimation method of the present invention includes: a learning step of acquiring learning data necessary for estimation of a rotational position of a rotor on the basis of an input sensor signal; and a position estimation step of estimating the rotational position of the rotor on the basis of the input sensor signal and the learning data. The learning step is performed, thereby acquiring, as the learning data, data indicating the correspondence relationship between a segment number associated with a section included in each of a plurality of quadrants and a pole pair number representing a pole pair position. The position estimation step is performed, thereby determining an initial position of the rotor on the basis of the input sensor signal and the learning data.

Abstract: A power storage device includes a welded portion in which a hole circumferential portion of a current collecting member and a swaged and deformed portion of a terminal member are welded, and a first space, which is surrounded by the welded portion, a hole circumferential surface of the hole circumferential portion, and the swaged and deformed portion, is placed adjacent to the welded portion to extend in a circumferential direction along the hole circumferential surface.

Abstract: A method for manufacturing a higher purity nitrile solvent by purifying a nitrile solvent containing an impurity, e.g an imine. The nitrile solvent may contain an imine and a conjugated diene, a carbonyl compound, or a high-boiling material as impurities. A method for purifying a nitrile solvent, such as isobutyronitrile, including bringing nitrile solvent containing an imine, e.g., as an impurity, into contact with an acidic aqueous solution having a pH of 3 or less, such as hydrochloric acid; bringing the nitrile solvent having been contacted with acidic aqueous solution into contact with an aqueous sodium hydrogen sulfite solution; bringing the nitrile solvent having been contacted with the aqueous sodium hydrogen sulfite solution into contact with an alkaline aqueous solution, such as an aqueous sodium hydroxide solution; and distilling the nitrile solvent having been contacted with the alkaline aqueous solution.

Abstract: A field cooperation system according to an embodiment includes a terminal device and a management device. The terminal device includes: a position measurement unit; and a display unit. The position measurement unit measures a position of the terminal device. A display device displays a display image. The management device includes: a database; and a display control unit. The database stores three-dimensional data representing a layout of a structure. The display control unit generates a display image to illustrate the structure and an icon representing the position of the terminal device on the display unit in correspondence with each other based on the three-dimensional data and the measured position of the terminal device.

Abstract: The invention aims to provide an inspection device that can sensitively detect a defect even if intensity of scattered light reflected from an inspection object greatly varies depending on portions of the inspection object. An inspection device according to the invention uses a history of detection signals to predict whether a next detection signal level exceeds a threshold. When the detection signal level is predicted to exceed the threshold, operation of the device is beforehand changed such that the detection signal level does not exceed the threshold.

Abstract: The invention aims to provide an inspection device that can sensitively detect a defect even if intensity of scattered light reflected from an inspection object greatly varies depending on portions of the inspection object. An inspection device according to the invention uses a history of detection signals to predict whether a next detection signal level exceeds a threshold. When the detection signal level is predicted to exceed the threshold, operation of the device is beforehand changed such that the detection signal level does not exceed the threshold.

Abstract: A field cooperation system according to an embodiment includes a terminal device and a management device. The terminal device includes: a position measurement unit; and a display unit. The position measurement unit measures a position of the terminal device. A display device displays a display image. The management device includes: a database; and a display control unit. The database stores three-dimensional data representing a layout of a structure. The display control unit generates a display image to illustrate the structure and an icon representing the position of the terminal device on the display unit in correspondence with each other based on the three-dimensional data and the measured position of the terminal device.

Abstract: A method for manufacturing a higher purity nitrile solvent by purifying a nitrile solvent containing an impurity, e.g an imine. The nitrile solvent may contain an imine and a conjugated diene, a carbonyl compound, or a high-boiling material as impurities. A method for purifying a nitrile solvent, such as isobutyronitrile, including bringing nitrile solvent containing an imine, e.g., as an impurity, into contact with an acidic aqueous solution having a pH of 3 or less, such as hydrochloric acid; bringing the nitrile solvent having been contacted with acidic aqueous solution into contact with an aqueous sodium hydrogen sulfite solution; bringing the nitrile solvent having been contacted with the aqueous sodium hydrogen sulfite solution into contact with an alkaline aqueous solution, such as an aqueous sodium hydroxide solution; and distilling the nitrile solvent having been contacted with the alkaline aqueous solution.

Abstract: A first member of a first semiconductor module and a second member of a second semiconductor module are disposed adjacent to each other along a crossing line segment crossing a longitudinal direction of the first semiconductor module as seen in a plan view. The first member is provided with a first circuit. The second member is provided with a second circuit. The first circuit does not drive when the second circuit is driving. The second circuit does not drive when the first circuit is driving.

Abstract: An optical fiber that communicates in a predetermined communication band includes: a signal light propagation core that propagates light beams of up to (x+1)-th order LP mode, where x is an integer of two or more; and a coupler that propagates a light beam that is: coupled with a light beam of the (x+1)-th order LP mode propagating through the signal light propagation core, and suppressed from being coupled with light beams of up to the x-th order LP mode propagating through the signal light propagation core, wherein, mode coupling of the light beams of up to the x-th order LP mode propagating through the signal light propagation core is performed, and mode coupling between the light beam of the x-th order LP mode and the light beam of (x+1)-th order LP mode is suppressed.

Abstract: A plurality of gate driver units (3,4) respectively drives a plurality of semiconductor switching devices (SW1,SW2) connected in parallel. A control circuit (5) controls the plurality of gate driver units (3,4). Each gate driver unit (3,4) includes a gate driver (6) supplying a gate voltage to a gate of the corresponding semiconductor switching device (SW1,SW2), and a potential difference measuring unit (7) measuring a potential difference (Va) arising due to wiring inductance on an emitter side of the corresponding semiconductor switching device (SW1,SW2) for each cycle of an output frequency. The control circuit (5) adjusts the gate voltage (VGE) supplied by the gate driver (6) of each gate driver unit (3,4) such that the potential differences (Va) of the plurality of semiconductor switching devices (SW1,SW2) in turn-on or turn-off switching operation become same as each other.

Abstract: A characteristic-measuring apparatus for a multi-core fiber includes: a coupling device that couples, at a first end of the multi-core fiber, light to a plurality of cores in the multi-core fiber; an imaging device that takes an image, at a second end of the multi-core fiber, of emission light emitted from the plurality of cores, where the plurality of cores are imaged at the same time; and a calculating device that determines a characteristic of the multi-core fiber based on images obtained by the imaging device.

Abstract: A method of measuring crosstalk of a multicore fiber, the method including capturing an emitted light pattern at an end portion of a dummy fiber and obtaining a correlation data between a power of the light incident on the dummy fiber and the emitted light pattern, irradiating one core of the multicore fiber with a light through the dummy fiber, and measuring a power of a reference light emitted from the core, capturing a crosstalk light emitted from a different core different from the core on which the light is incident under a state where the reference light is masked, and estimating a power of the crosstalk light from a captured data of the crosstalk light and the correlation data, and calculating the crosstalk from the power of the reference light and the power of the crosstalk light.

Abstract: An electrostatic chuck includes an anisotropic heat conductor which is disposed between an attraction substrate and a first heater member, and has an upper surface and a lower surface, and a coefficient of thermal conductivity which varies depending on directions. The anisotropic heat conductor is disposed so that the coefficient of thermal conductivity in a plane direction is larger than the coefficient of thermal conductivity in a thickness direction. Further, the electrostatic chuck includes metal layers which are joined to the anisotropic heat conductor so as to cover the upper surface and the lower surface of the anisotropic heat conductor, and an adhesive layer which is provided on a surface of each metal layer, and joins the metal layer to the attraction substrate or the heater member. Moreover, at least one of the metal layers is a fused metal layer formed by solidifying a melted metal.

Abstract: A plurality of gate driver units (3,4) respectively drives a plurality of semiconductor switching devices (SW1,SW2) connected in parallel. A control circuit (5) controls the plurality of gate driver units (3,4). Each gate driver unit (3,4) includes a gate driver (6) supplying a gate voltage to a gate of the corresponding semiconductor switching device (SW1,SW2), and a potential difference measuring unit (7) measuring a potential difference (Va) arising due to wiring inductance on an emitter side of the corresponding semiconductor switching device (SW1,SW2) for each cycle of an output frequency. The control circuit (5) adjusts the gate voltage (VGE) supplied by the gate driver (6) of each gate driver unit (3,4) such that the potential differences (Va) of the plurality of semiconductor switching devices (SW1,SW2) in turn-on or turn-off switching operation become same as each other.

Abstract: A multicore fiber that includes: three or more cores that transmit in single-mode transmission; a common clad that covers a periphery of the three or more cores; and a low-refractive index portion that has a refractive index lower than a refractive index of the clad. The multicore fiber further includes a region having the three or more cores arranged annularly on a cross-section perpendicular to a longitudinal direction. At least a portion of the low-refractive index portion is arranged inside a minimum inscribed circle of two adjacent cores within the region.

Abstract: A multicore fiber includes a plurality of cores including a first core and a cladding surrounding the plurality of cores. The first core includes: an inner core; and an outer core surrounding the inner core with no gap and having a refractive index higher than a refractive index of the inner core and a refractive index of the cladding. The core is not doped with any rare earth element. At least two LP mode light beams at a predetermined wavelength propagate through the first core at an attenuation of 0.3 dB/km or less.

Abstract: A first member of a first semiconductor module and a second member of a second semiconductor module are disposed adjacent to each other along a crossing line segment crossing a longitudinal direction of the first semiconductor module as seen in a plan view. The first member is provided with a first circuit. The second member is provided with a second circuit. The first circuit does not drive when the second circuit is driving. The second circuit does not drive when the first circuit is driving.

Abstract: An optical fiber that communicates in a predetermined communication band includes: a signal light propagation core that propagates light beams of up to (x+1)-th order LP mode, where x is an integer of two or more; and a coupler that propagates a light beam that is: coupled with a light beam of the (x+1)-th order LP mode propagating through the signal light propagation core, and suppressed from being coupled with light beams of up to the x-th order LP mode propagating through the signal light propagation core, wherein, mode coupling of the light beams of up to the x-th order LP mode propagating through the signal light propagation core is performed, and mode coupling between the light beam of the x-th order LP mode and the light beam of (x+1)-th order LP mode is suppressed.