Abstract: A borehole cement slurry additive that is capable of suppressing the generation of free water from cement slurries in any environment, whether cold regions, mild regions, or hot regions; and a method for storing the same. The borehole cement slurry additive contains: an aqueous dispersion of silica having an average particle size of 3-200 nm as determined via dynamic light scattering; and a compound having an alcoholic hydroxyl group as a dispersion stabilizer, the compound being included in an amount of 1-30 mol per 1,000 g dispersion medium in the aqueous silica dispersion.

Abstract: A metal powder for additive manufacturing is used (i) which includes, as a main component, aluminum, and not less than 0.20% by mass and not more than 13% by mass of at least one alloy element other than the aluminum, selected from iron, manganese, chromium, nickel and zirconium, and (ii) in which the content of iron is less than 4.5% by mass.

Abstract: An object of the present invention is to provide an additive manufactured object which is free of solidification cracking due to, e.g., heat shrinkage during additive manufacturing of an aluminum alloy; which is free of anisotropy in strength, and has high strength and ductility. An aluminum alloy powder for additive manufacturing includes aluminum alloy particles in which not less than 0.01% by mass and not more than 1% by mass of a grain refiner is trapped. This grain refiner is at least one selected from the borides and carbides of group 4 elements.

Abstract: The present invention provides a robust metal lamination-shaped object containing aluminum and having no defect. A metal powder used for forming this metal lamination-shaped object is an aluminum-based powder having a volume-based 50% particle diameter larger than or equal to 10 ?m and smaller than 100 ?m when a particle diameter distribution is measured by a laser diffraction-scattering method, a specific surface area smaller than or equal to 0.5 m2/g, and an oxygen amount larger than or equal to 3 mg/m2 and less than or equal to 10 mg/m2 per unit surface area. A relationship between a hydrogen amount (X ml in standard state) per 100 g of the aluminum-based powder and a specific surface area (Y m2/g), and a relationship between the hydrogen amount (X ml in standard state) and an oxygen amount (Z wt %), are respectively in accordance with formulas: X/Y<151 and Z/X>0.0022.

Abstract: An aluminum particle group composed of aluminum particles, as observed in an image thereof obtained through a scanning electron microscope, has an average circularity of 0.75 or more, and an average particle diameter of D50 of 10 ?m or more and less than 100 ?m, and satisfies A×3?B and also satisfying D<C where A represents the number of aluminum particles having a diameter of less than 5 ?m, B represents the number of aluminum particles having a diameter of 10 ?m or more, C represents the number of aluminum particles with no satellite, and D represents the number of aluminum particles having satellites.

Abstract: The present invention provides a robust metal lamination-shaped object containing aluminum and having no defect. A metal powder used for forming this metal lamination-shaped object is an aluminum-based powder having a volume-based 50% particle diameter larger than or equal to 10 ?m and smaller than 100 ?m when a particle diameter distribution is measured by a laser diffraction-scattering method, a specific surface area smaller than or equal to 0.5 m2/g, and an oxygen amount larger than or equal to 30 mg/m2 and less than or equal to 100 mg/m2 per unit surface area. A relationship between a hydrogen amount (X ml in standard state) per 100 g of the aluminum-based powder and a specific surface area (Y m2/g), and a relationship between the hydrogen amount (X ml in standard state) and an oxygen amount (Z wt %), are respectively in accordance with formulas: X/Y<151 and Z/X>0.0022.

Abstract: An acoustic emission measuring device in which a piezoelectric element (63) used as an AE sensor is secured to the inner ring (62) of a ball bearing (61) fixedly fitted onto a rotating shaft (60). The axial end face of a roughly tire-shaped case (65), which is capable of rotating in synchronism with the inner ring (62) and storing a first coil in which a current flows from the piezoelectric element (63), is secured to the inner ring (62). The axial end face of a roughly tire-shaped case (66) for storing a second coil is secured to an outer ring (64). The first coil and the second coil are oppositely disposed radially outside of the rotating shaft (60) so that the first coil and the second coil can face each other in the radial direction.

Abstract: A vehicle auxiliary braking system is provided to accomplish a braking effect similar to engine braking inexpensively, to extend the life of the brakes, and to reduce the work cycle time in order to improve work efficiency. The system has a centrifugal sensor 20, an accelerator sensor 21, and a braking clutch engaging means that includes a braking hydraulic circuit 22. The centrifugal sensor 20 detects that the vehicle is traveling when the vehicle is moving at or above a prescribed speed. Accelerator sensor 21 detects when the depression amount of the accelerator pedal 6 is at or below a prescribed amount. The braking clutch engaging means engages the clutch that corresponds to the opposite travel direction when the vehicle is traveling at or above the prescribed speed and the accelerator depression amount is at or below the prescribed depression amount.

Abstract: A vehicle auxiliary braking system is provided to accomplish a braking effect similar to engine braking inexpensively, to extend the life of the brakes, and to reduce the work cycle time in order to improve work efficiency. The system has a centrifugal sensor 20, an accelerator sensor 21, and a braking clutch engaging means that includes a braking hydraulic circuit 22. The centrifugal sensor 20 detects that the vehicle is traveling when the vehicle is moving at or above a prescribed speed. Accelerator sensor 21 detects when the depression amount of the accelerator pedal 6 is at or below a prescribed amount. The braking clutch engaging means engages the clutch that corresponds to the opposite travel direction when the vehicle is traveling at or above the prescribed speed and the accelerator depression amount is at or below the prescribed depression amount.

Abstract: A device applicable to a digital still camera or similar handy apparatus for controlling the brightness of a backlight used to backlight an LCD (Liquid Crystal Display) panel is disclosed. Power to be fed from a battery to the backlight and therefore the brightness of the backlight is increased on the basis of the temperature of the backlight and the kind and remaining power of the battery. The device prevents the brightness of the LCD panel from falling even in a low temperature environment and thereby implements easy-to-see image display little effected by temperature.

Abstract: A transmission equipped with torque converter having a forward/backward change valve for supplying working oil selectively to any one of a forward clutch or a backward clutch. A shock diverter valve is installed between the forward/backward change valve and a working oil supply source. The shock diverter valve is so designed as to include plural throttles having different bore diameters through which working oil is passed to reduce a rise speed of downsteam side hydraulic pressure. A lever for changing the shock diverter valve is installed at an outside of clutch. An operator can select a drive feeling easily from at least two kinds of feeling by operating a lever.

Abstract: A throttle body assembly for supplying a mixture of fuel and air to an intake port of an internal combustion engine, integrally incorporating a fuel injection valve, a fuel pump, a fuel supply passage defined in the throttle body and extending from the fuel pump to the fuel injection valve, and a fuel pressure control valve directly incorporated in the throttle body to control pressure of fuel in the fuel supply passage. Thus, there is no need to use an external tubing system for supplying and returning fuel to and from the fuel injection valve, and the throttle body assemby may be simplified in structure so as to facilitate the assembling and servicing of the throttle body assembly. Further, an electronic control unit and sensors associated with the control unit are both directly mounted on the throttle body so that wiring around the throttle body may be eliminated.