Abstract: A disclosed radiation source position estimation system includes a first position information specifier configured to specify position information of one or more elements included in a position measuring member; an imager configured to acquire images of the one or more elements formed by radiation emitted from a radiation source; and a second position information specifier configured to specify position information of the radiation source, based on the first position information specified by the first position information specifier and the images acquired by the imager.

Abstract: A membrane separation method where a reverse osmosis method can be applied as a method for separating or concentrating a to-be-treated liquid having a high osmotic pressure or as a water recovery method. The membrane separation method for a to-be-treated liquid having an osmotic pressure includes a first step of separating the to-be-treated liquid into a first permeate and a first retentate by a reverse osmosis method using a loose RO membrane (50). The to-be-treated liquid satisfies ?Cb?>?Pmax when an osmotic pressure of a to-be-treated liquid side membrane surface concentration Cb? is represented by ?Cb? and a maximum operating pressure difference is represented by ?Pmax, or has an osmotic pressure of 5 MPa or more and 100 MPa or less. The loose RO membrane (50) is a membrane through which at least a part of a solute contained in the to-be-treated liquid passes together with a solvent.

Abstract: A power conversion system including a plurality of power conversion devices connected in parallel. Each of the plurality of power conversion devices includes: a power conversion circuit configured to convert DC to AC; and an AC filter circuit connected to an output side of the power conversion circuit. The AC filter circuit is an LC low-pass filter including a first filter reactor and an AC filter capacitor connected in an L shape. The AC filter circuit further includes a second filter reactor connected in series to the AC filter capacitor, and a resistance constructing a series circuit together with the AC filter capacitor and the second filter reactor.

Abstract: A multiplex power conversion system enabling preventing a failure from spreading, with a simple configuration. The multiplex power conversion system includes a plurality of unit power converters. In the plurality of unit power converters, respective direct-current positive sides are connected. Respective direct-current negative sides are connected. Respective direct-current neutral points are not short-circuited. For example, the respective direct-current neutral points are not connected. Therefore, a failure in a power converter can be prevented from spreading.

Abstract: A power conversion device includes a power conversion module, a phase change material, a heat dissipation member, a cooling mechanism, and a controller. A semiconductor switching element and a freewheeling diode configure a power conversion circuit. The phase change material is provided on a principal plane of a casing. The heat dissipation member includes a heat dissipation surface. The heat dissipation surface is overlapped with the principal plane to sandwich the phase change material. The cooling mechanism cools the heat dissipation member. The controller generates a driving signal for driving the power conversion circuit and controls the cooling mechanism. The controller includes a predetermined heating operation. The heating operation may drive the power conversion circuit, in a state that the cooling mechanism is stopped or intermittently operated, such that heat generation occurs in both the semiconductor switching element and the freewheeling diode.

Abstract: A transport possibility determination device comprises a distance measurement unit and a control unit. The distance measurement unit acquires information about the distance to an object. The control unit determines the state of a load when the object is a transport platform on which the load has been placed, on the basis of the information about the distance to the object acquired by the distance measurement unit. The control unit determines whether or not a transportable condition, which is a condition for permitting a forklift to transport the load, is met on the basis of the determined state of the load.

Abstract: A transport possibility determination device comprises a distance measurement unit and a control unit. The distance measurement unit acquires information about the distance to an object. The control unit determines the state of a load when the object is a transport platform on which the load has been placed, on the basis of the information about the distance to the object acquired by the distance measurement unit. The control unit determines whether or not a transportable condition, which is a condition for permitting a forklift to transport the load, is met on the basis of the determined state of the load.

Abstract: A control system of a power converter includes a plurality of carrier wave generating units which are respectively provided for a plurality of power converters connected between a plurality of DC power supplies and a common AC power supply and which are configured to respectively generate carrier waves on the basis of an AC voltage of the AC power supply. The control system of the power converter can thereby synchronize carrier phases of a plurality of power converters.

Abstract: A connector (50) includes a tubular member (52) and a base tube (58). A light-guiding tube (60) is drawn out from the base tube (58) toward the opposite side to the tubular member (52). An adapter (1) includes: a first connecting portion (10) that can be connected to and disconnected from a light source device (70); a second connecting portion (20) that can be connected to and disconnected from the connector (50); and a light-guiding member (30) that guides light emitted from the light source device (70) to a proximal end surface (61) of the tube (60).

Abstract: A non-aqueous electrolyte secondary battery positive electrode that is characterized by comprising a positive electrode collector and a positive electrode mixture layer that is provided on the positive electrode collector and includes a positive electrode active material and a conductive material that includes carbon nanotubes. The non-aqueous electrolyte secondary battery positive electrode is also characterized in that, when the positive electrode mixture layer is bisected in the thickness direction, the mass ratio of carbon nanotubes to positive electrode active material in an upper-half region that is on a top surface side is smaller than the mass ratio of carbon nanotubes to positive electrode active material in a lower-half region that is on the positive electrode collector side.

Abstract: A control device for a power converter that can suppress oscillation of an output voltage of the power converter. The control device for the power converter includes an overvoltage detector configured to detect an overvoltage on an output side of the power converter and a controller configured to, when the overvoltage on the output side of the power converter is detected by the overvoltage detector, perform gate block after reducing a current command value given to the power converter. With the configuration, when the overvoltage on the output side of the power converter is detected, the control device performs the gate block after reducing the current command value given to the power converter. Accordingly, it is possible to suppress oscillation of an output voltage of the power converter.

Abstract: An object of the present disclosure is to provide a nonaqueous electrolyte secondary battery that can suppress lowering in capacity due to high-temperature storage of the battery. The nonaqueous electrolyte secondary battery (10) includes: a positive electrode (11) containing one or more positive electrode active materials; a negative electrode (12); and a nonaqueous electrolyte containing a fluorine compound, where: the positive electrode active materials include a complex oxide A containing Li, Ni, and W and a complex oxide B containing Li, Ni, and W as an optional element; W content in the complex oxide A is 5 mol % or more; W content in the complex oxide B is 0.5 mol % or less; and a mass ratio of the complex oxide A is 0.002% or more and 0.1% or less relative to the total of the complex oxide A and the complex oxide B.

Abstract: A control system of a power converter includes a plurality of carrier wave generating units which are respectively provided for a plurality of power converters connected between a plurality of DC power supplies and a common AC power supply and which are configured to respectively generate carrier waves on the basis of an AC voltage of the AC power supply. The control system of the power converter can thereby synchronize carrier phases of a plurality of power converters.

Abstract: This cathode active material for a secondary battery using a non-aqueous electrolyte includes nickel-rich lithium transition-metal oxide, exhibits a hard X-ray photoelectron spectroscopy (HAXPES) peak of 1,560 to 1,565 eV in binding energy from an Al-rich layer, using a photon energy of 6 KeV, and with respect to the mean particle diameter r of the lithium transition-metal oxide particle, the Al concentration is approximately constant within 0.35 r of the center.

Abstract: An electric power conversion apparatus includes: an electric power conversion circuit that allows a DC terminal to be connected to a DC power source via a DC bus line, and performs at least one of converting DC power of the DC power source into AC power to output, or converting AC power into DC power to output; a DC switch turned on when the electric power conversion circuit performs electric power conversion; an AC switch provided on a side of the AC terminal, and turned on when the electric power conversion circuit performs the electric power conversion; a DC voltmeter that measures a potential at a predetermined portion, on a side of the DC terminal; a ground connection portion that connects the DC bus line and ground potential; and a control circuit connected to the electric power conversion circuit, the DC switch, the AC switch, and the DC voltmeter.

Abstract: This cathode active material for a secondary battery using a non-aqueous electrolyte includes nickel-rich lithium transition-metal oxide, exhibits a hard X-ray photoelectron spectroscopy (HAXPES) peak of 1,560 to 1,565 eV in binding energy from an Al-rich layer, using a photon energy of 6 KeV, and with respect to the mean particle diameter r of the lithium transition-metal oxide particle, the Al concentration is approximately constant within 0.35r of the center.

Abstract: The purpose of the present disclosure is to provide a positive electrode active material which enables the achievement of a nonaqueous electrolyte secondary battery that has good cycle characteristics. A positive electrode active material for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure contains large particles and small particles of a lithium transition metal composite oxide; the large particles are secondary particles that have a volume-based median diameter of from 10 to 25 ?m, each of said secondary particles being an aggregate of primary particles that have a diameter of 1 ?m or less; and the small particles contain primary particles that are not aggregated, while having a diameter of from 1 to 5 ?m.

Abstract: A controller for a power conversion system includes a determination unit configured to determine whether a current time is in nighttime in an environment of a power converter that is connected to one or both of a direct-current power supply and an alternating-current power supply, and a control unit configured, in a case that the determination unit determines that the current time is in the nighttime, to maintain a switch in a closed state, the switch being provided between the power converter and one of the alternating-current power supply and the direct-current power supply, and to maintain power consumption by a resistor provided in a main circuit inside a housing of the power converter. The power conversion system can suppress lowering of temperature inside a housing without separately including a space heater.

Abstract: A power conversion device includes a power conversion module, a phase change material, a heat dissipation member, a cooling mechanism, and a controller. A semiconductor switching element and a freewheeling diode configure a power conversion circuit. The phase change material is provided on a principal plane of a casing. The heat dissipation member includes a heat dissipation surface. The heat dissipation surface is overlapped with the principal plane to sandwich the phase change material. The cooling mechanism cools the heat dissipation member. The controller generates a driving signal for driving the power conversion circuit and controls the cooling mechanism. The controller includes a predetermined heating operation. The heating operation may drive the power conversion circuit, in a state that the cooling mechanism is stopped or intermittently operated, such that heat generation occurs in both the semiconductor switching element and the freewheeling diode.

Abstract: A control unit (10) is a device for detecting the condition of a floor surface (FL) on which a target (30) has been placed, and comprises a distance calculation unit (11) and a target detection unit (18). The distance calculation unit (11) calculates information about the distance to the target (30) according to the amount of reflection of the light emitted from a lighting device (21) toward the target (30). The target detection unit (18) detects the condition of a floor surface (FL) on which the target (30) has been placed, on the basis of the information about the distance acquired by the distance calculation unit (11).