Abstract: Provided is a method for producing a positive electrode active material for an alkali ion secondary battery, the positive electrode active material containing a large amount of a transition metal and enabling operation of the battery. In the method for producing a positive electrode active material for an alkali ion secondary battery, in which the positive electrode active material contains 34 mol % or more of CrO+FeO+MnO+CoO+NiO, the method includes: a step of preparing a positive electrode active material precursor containing crystals; and a step of irradiating the positive electrode active material precursor with light to melt the crystals and amorphize at least a portion of the positive electrode active material precursor.

Abstract: A decorative board in the present disclosure includes a primer layer, a concealing layer, a colorant layer and a topcoat layer containing ultraviolet-curable resin on a base material in this order. A method for manufacturing the decorative board in the present disclosure includes a stretching process, an irradiation process, and a separation process. The stretching process includes forming the primer layer, the concealing layer, and the colorant layer on the base material in this order; applying a ultraviolet-curable coating material containing ultraviolet-curable resin; placing a plastic film on the applied ultraviolet-curable coating material, placing a roller on the plastic film, and stretching the ultraviolet-curable coating material by rolling the roller. The irradiation process includes forming the topcoat layer by hardening the ultraviolet-curable coating material by ultraviolet ray irradiation. The separation process includes separating the plastic film after the irradiation.

Abstract: A decorative board in the present disclosure includes a primer layer, a concealing layer, a colorant layer and a topcoat layer containing ultraviolet-curable resin on a base material in this order. A method for manufacturing the decorative board in the present disclosure includes a stretching process, an irradiation process, and a separation process. The stretching process includes forming the primer layer, the concealing layer, and the colorant layer on the base material in this order; applying a ultraviolet-curable coating material containing ultraviolet-curable resin; placing a plastic film on the applied ultraviolet-curable coating material, placing a roller on the plastic film, and stretching the ultraviolet-curable coating material by rolling the roller. The irradiation process includes forming the topcoat layer by hardening the ultraviolet-curable coating material by ultraviolet ray irradiation. The separation process includes separating the plastic film after the irradiation.

Abstract: In a turbo refrigerator in which: a gas-phase refrigerant from an evaporator is compressed by a turbo compressor and then condensed by a condenser; the obtained liquid-phase refrigerant is evaporated by the evaporator; and a cooling target is cooled down by evaporation heat of the liquid-phase refrigerant, the compressor is a back-to-back two-stage centrifugal type, and the condenser is provided at a position outside a compressor rear stage so as to overlap the compressor rear stage when viewed from each of an axial direction and a radial direction. With this, the pressure loss of a vapor refrigerant is eliminated, and the deterioration in efficiency can be suppressed. In addition, size reduction can be realized by space saving. Further, an evaporated refrigerant can be smoothly introduced to the condenser with a simple configuration.

Abstract: A gear mechanism includes a first gear, a second gear, an idler gear and a mover/stopper. The idler gear has an inner circumference with a centrally located inner space and an outer circumference rotatable relative to the inner circumference. The mover/stopper includes a bolt inserted through the inner space in a loosely fitted state and having a shaft part capable of assuming different radial positions relative to the inner space, and a receiving part holding the idler gear via the bolt. The idler gear and the bolt are configured such that the idler gear is allowed to be radially displaced relative to the bolt and to be tightened to the receiving part at a meshing engagement position by the bolt to be radially fixed and such that the inner circumference is allowed to be axially held between the receiving part and the bolt to be fixed.

Abstract: A backlash adjusting method includes pressing an idler gear against a first gear and a second gear with a flexible film being held therebetween so that the idler gear is led to a meshing engagement position where the idler gear is meshing engageable with the first and second gears. The first and second gears are spaced away from each other. The method further includes removing the film after the idler has been led to the meshing engagement position.

Abstract: In a turbo refrigerator in which: a gas-phase refrigerant from an evaporator is compressed by a turbo compressor and then condensed by a condenser; the obtained liquid-phase refrigerant is evaporated by the evaporator; and a cooling target is cooled down by evaporation heat of the liquid-phase refrigerant, the compressor is a back-to-back two-stage centrifugal type, and the condenser is provided at a position outside a compressor rear stage so as to overlap the compressor rear stage when viewed from each of an axial direction and a radial direction. With this, the pressure loss of a vapor refrigerant is eliminated, and the deterioration in efficiency can be suppressed. In addition, size reduction can be realized by space saving. Further, an evaporated refrigerant can be smoothly introduced to the condenser with a simple configuration.

Abstract: A damage evaluation method and apparatus of a metal material which is capable of determining whether a flaw in the metal sample is originated by the creep damage or in the manufacturing process, and also capable of estimating a remaining life of the metal component. The damage evaluation method of a metal material by the present invention is a method for evaluating a flaw in the metal sample comprising the steps of mounting onto a metal surface including an internal flaw and on both sides of the flaw a transmitting probe for transmitting an ultrasonic waves and a receiving probe for receiving the ultrasonic waves, transmitting the ultrasonic waves towards the internal flaw and receiving the diffracted wave from the flaw for determining whether or not a flaw is present in the metal, based on the analysis of the distribution of the diffracted waves and an analysis of the sample as to whether voids (creep voids) are present and, if present, the distribution of the voids.

Abstract: A damage evaluation method and apparatus of a metal material which is capable of determining whether a flaw in the metal sample is originated by the creep damage or in the manufacturing process, and also capable of estimating a remaining life of the metal component. The damage evaluation method of a metal material by the present invention is a method for evaluating a flaw in the metal sample comprising the steps of mounting onto a metal surface including an internal flaw and on both sides of the flaw a transmitting probe for transmitting an ultrasonic waves and a receiving probe for receiving the ultrasonic waves, transmitting the ultrasonic waves towards the internal flaw and receiving the diffracted wave from the flaw for determining whether or not a flaw is present in the metal, based on the analysis of the distribution of the diffracted waves and an analysis of the sample as to whether voids (creep voids) are present and, if present, the distribution of the voids.

Abstract: A damage evaluation method and apparatus of a metal material which is capable of determining whether a flaw in the metal sample is originated by the creep damage or in the manufacturing process, and also capable of estimating a remaining life of the metal component. The damage evaluation method of a metal material by the present invention is a method for evaluating a flaw in the metal sample comprising the steps of mounting onto a metal surface including an internal flaw and on both sides of the flaw a transmitting probe for transmitting an ultrasonic waves and a receiving probe for receiving the ultrasonic waves, transmitting the ultrasonic waves towards the internal flaw and receiving the diffracted wave from the flaw for determining whether or not a flaw is present in the metal, based on the analysis of the distribution of the diffracted waves and an analysis of the sample as to whether voids (creep voids) are present and, if present, the distribution of the voids.

Abstract: A method and apparatus for monitoring crack inside piping suitable for high temperature environment including an electrode attachment process for attaching a pair of heat resistant current input-output electrodes to an outer circumferential surface of the piping such that the crack is positioned between electrodes. Measuring intra-crack potential difference by a pair of heat resistant potential difference measuring electrodes attached to outer circumferential surface of the piping and placed between the input output electrodes by supplying alternating current between the input-output electrodes. Crack length is calculated from the measured electric potential difference after correcting the intra-crack electric potential difference as a function pipe temperature and pressure by an intra-crack electrode potential difference correction process.

Abstract: In a recording and reproduction apparatus, a recording medium is rotation-driven by a spindle motor, and a carriage having magnetic heads for seeking on the recording medium is driven by a voice coil motor. When a rotation velocity of the recording medium during acceleration and deceleration periods in a seeking-operation of the magnetic head is within an allowable range, a supply of a driving-current to the spindle motor is stopped in accordance with a level of a driving-current supplied to the voice coil motor. A consumption current of the recording and reproduction apparatus can be reduced without degrading performance of the apparatus.