Abstract: High-purity hydrous D-allose crystals and a method of efficiently obtaining the crystals are provided. To a D-allose-containing solution having a purity of D-allose of at least 80% (g/g) in a solute, in a metastable region in a supersaturated state of 30° C. or less, D-allose seed crystals are added. Then, the temperature of the solution is lowered by 10° C. or more for cooling and crystallization to initially obtain “hydrous D-allose crystals”, and the crystallization water thereof is removed in a specified temperature zone to obtain novel “anhydrous D-allose crystals”.

Abstract: High-purity hydrous D-allose crystals and a method of efficiently obtaining the crystals are provided. To a D-allose-containing solution having a purity of D-allose of at least 80% (g/g) in a solute, in a metastable region in a supersaturated state of 30° C. or less, D-allose seed crystals are added. Then, the temperature of the solution is lowered by 10° C. or more for cooling and crystallization to initially obtain “hydrous D-allose crystals”, and the crystallization water thereof is removed in a specified temperature zone to obtain novel “anhydrous D-allose crystals”.

Abstract: A vehicle power conversion device includes: a housing configured to accommodate an electronic component therein and having an opening; and a cooling device. The cooling device includes a base being a plate-shaped member and heat sinks attached to the base. The base has a groove with refrigerant enclosed. The base has a first main surface to which the electronic component is to be attached, and covers the opening by the first main surface facing an interior of the housing. The heat sinks are joined, at intervals, onto the second main surface of the base.

Abstract: High-purity hydrous D-allose crystals and a method of efficiently obtaining the crystals are provided. To a D-allose-containing solution having a purity of D-allose of at least 80% (g/g) in a solute, in a metastable region in a supersaturated state of 30° C. or less, D-allose seed crystals are added. Then, the temperature of the solution is lowered by 10° C. or more for cooling and crystallization to initially obtain “hydrous D-allose crystals”, and the crystallization water thereof is removed in a specified temperature zone to obtain novel “anhydrous D-allose crystals”.

Abstract: A cooling device includes a base that is a plate-shaped member, heat pipes attached to the base, and a fin attached to the heat pipes. A groove, in which refrigerant is enclosed, is formed in the base. The heat pipes are attached to the base and an internal hollow of each of the heat pipes communicates with the groove. A portion of the groove or both the portion of the groove and a portion of the hollow communicating with the groove are filled with the refrigerant in a liquid state.

Abstract: A vehicle power conversion device includes: a housing configured to accommodate an electronic component therein and having an opening; and a cooling device. The cooling device includes a base being a plate-shaped member and heat sinks attached to the base. The base has a groove with refrigerant enclosed. The base has a first main surface to which the electronic component is to be attached, and covers the opening by the first main surface facing an interior of the housing. The heat sinks are joined, at intervals, onto the second main surface of the base.

Abstract: An overcurrent detection circuit includes a di/dt detection circuit to detect di/dt of a current Ie that flows in an emitter of an IGBT, a control circuit to detect whether the current Ie is an overcurrent based on di/dt and to output a detection result to a driving circuit, and a mask circuit to set a mask period in which an operation of overcurrent determination in the control circuit is masked.

Abstract: An overcurrent detection circuit includes a di/dt detection circuit to detect di/dt of a current Ie that flows in an emitter of an IGBT, a control circuit to detect whether the current Ie is an overcurrent based on di/dt and to output a detection result to a driving circuit, and a mask circuit to set a mask period in which an operation of overcurrent determination in the control circuit is masked.

Abstract: In order to obtain a drive circuit of a power semiconductor device capable of making a fast response to a voltage fluctuation dV/dt and preventing a malfunction of the power semiconductor device while suppressing power consumption with a simple circuit configuration, a control circuit controlling ON and OFF switching of the power semiconductor device, a DC power supply supplying a voltage between control terminals of the power semiconductor device, and a switching element connected between the control terminals of the power semiconductor device are provided. The switching element turns ON in a case where a power supply voltage of the DC power supply drops or in a case where the voltage between the control terminals of the power supply device increases in a state where the power supply voltage of the DC power supply has dropped, and thereby causes a short-circuit between the control terminals of the power semiconductor device.

Abstract: A semiconductor device according to the present invention includes a semiconductor substrate, and an interlayer dielectric film, formed on the semiconductor substrate, having a multilayer structure of a compressive stress film and a tensile stress film.

Abstract: There is provided a denitrification apparatus capable of reducing NOx from a combustion facility and preventing evaporation of a reducing liquid in a lance and an injection nozzle in the combustion facility in operation at a low load by adjusting concentration of a reducing agent, thereby achieving complete evaporation of the reducing liquid in an exhaust gas duct.

Abstract: In a filter capacitor including three capacitor elements including a first capacitor element at an end on one side in an electrical connection form and a second capacitor element at an end on the other side, a pair of direct-current terminals including a positive-electrode-side main terminal and a negative-electrode-side main terminal, which receive a direct-current voltage from a direct-current power supply, are provided, a first conductor path length between a positive-electrode-side terminal of the first capacitor element and the positive-electrode-side main terminal and a second conductor path length between a positive-electrode-side terminal of the second capacitor element and the positive-electrode-side main terminal are approximately the same, and a third conductor path length between a negative-electrode-side terminal of the first capacitor element and the negative-electrode-side main terminal and a fourth conductor path length between the negative-electrode-side terminal of the second capacitor eleme

Abstract: A power converter, which performs cooling of a switching element by using a boiling cooling apparatus that makes use of a boiling phenomenon of a coolant incorporated therein, includes a control unit to control an operation of the power converter based on a deviation between an element attachment surface temperature, which is a temperature of an attachment surface of the switching element, and a cooling apparatus intake air temperature. When the deviation between the element attachment surface temperature and the cooling apparatus intake air temperature exceeds a predetermined threshold, the control unit performs control of stopping the power converter.

Abstract: A power converter, which performs cooling of a switching element by using a boiling cooling apparatus that makes use of a boiling phenomenon of a coolant incorporated therein, includes a control unit to control an operation of the power converter based on a deviation between an element attachment surface temperature, which is a temperature of an attachment surface of the switching element, and a cooling apparatus intake air temperature. When the deviation between the element attachment surface temperature and the cooling apparatus intake air temperature exceeds a predetermined threshold, the control unit performs control of stopping the power converter.

Abstract: In a filter capacitor including three capacitor elements including a first capacitor element at an end on one side in an electrical connection form and a second capacitor element at an end on the other side, a pair of direct-current terminals including a positive-electrode-side main terminal and a negative-electrode-side main terminal, which receive a direct-current voltage from a direct-current power supply, are provided, a first conductor path length between a positive-electrode-side terminal of the first capacitor element and the positive-electrode-side main terminal and a second conductor path length between a positive-electrode-side terminal of the second capacitor element and the positive-electrode-side main terminal are approximately the same, and a third conductor path length between a negative-electrode-side terminal of the first capacitor element and the negative-electrode-side main terminal and a fourth conductor path length between the negative-electrode-side terminal of the second capacitor eleme

Abstract: There is provided a denitrification apparatus capable of reducing NOx from a combustion facility and preventing evaporation of a reducing liquid in a lance and an injection nozzle in the combustion facility in operation at a low load by adjusting concentration of a reducing agent, thereby achieving complete evaporation of the reducing liquid in an exhaust gas duct.

Abstract: A semiconductor device according to the present invention includes: a semiconductor substrate; a first copper interconnection provided on the semiconductor substrate; an insulating layer provided over the first copper interconnection and having a hole extending therethrough to the first copper interconnection; a barrier layer composed of a tantalum-containing material and covering at least a sidewall of the hole and a part of the first copper interconnection exposed in the hole; and a second copper interconnection provided in intimate contact with the barrier layer and electrically connected to the first copper interconnection via the barrier layer; wherein the barrier layer has a nitrogen concentration profile such that the concentration of nitrogen contained in the material varies to be lower in a boundary portion of the barrier layer adjacent to the first copper interconnection and in a boundary portion of the barrier layer adjacent to the second copper interconnection and higher in an intermediate portion

Abstract: In order to obtain a drive circuit of a power semiconductor device capable of making a fast response to a voltage fluctuation dV/dt and preventing a malfunction of the power semiconductor device while suppressing power consumption with a simple circuit configuration, a control circuit controlling ON and OFF switching of the power semiconductor device, a DC power supply supplying a voltage between control terminals of the power semiconductor device, and a switching element connected between the control terminals of the power semiconductor device are provided. The switching element turns ON in a case where a power supply voltage of the DC power supply drops or in a case where the voltage between the control terminals of the power supply device increases in a state where the power supply voltage of the DC power supply has dropped, and thereby causes a short-circuit between the control terminals of the power semiconductor device.

Abstract: A semiconductor device according to the present invention includes a semiconductor substrate, and an interlayer dielectric film, formed on the semiconductor substrate, having a multilayer structure of a compressive stress film and a tensile stress film.

Abstract: An exhaust smoke denitrating apparatus in which using an NH3 injection unit, compressed air is fed from blower to ejector for extracting of exhaust gas from HRSG1, and with thus obtained mixed gas, NH3-containing gas is produced from NH3 water by NH3 water evaporator, the NH3-containing gas injected through NH3-containing gas injection nozzle of the HRSG1 disposed on a front stream side of denitration catalyst layer. As any high-temperature exhaust gas is cooled and diluted by compressed air, there is no danger of oxidation of NH3 during the stage of evaporation of NH3 water. The moisture level of exhaust gas can be lowered, thereby enabling inhibition of any drain generation in exhaust gas extraction piping. Air warming within NH3 water evaporation system can be carried out at an early stage.