Abstract: The present invention provides a compound having a PLD inhibitory activity. The present invention provides a compound of the following structural formula, and the like, or a pharmaceutically acceptable salt thereof. wherein each symbol is as defined in the description.

Abstract: A vacuum valve includes a structure having: a container in which a fixed-side end plate and a movable-side end plate are fixed to both ends of an insulation cylinder; and an arc shield at an intermediate portion of the insulation cylinder. The vacuum valve includes: a voltage nonlinear resistance layer containing particles having a voltage nonlinear resistance characteristic at at least either one of an outer creepage surface or an inner creepage surface of the insulation cylinder. A filling rate of the particles in the voltage nonlinear resistance layer has a distribution along a film thickness direction, and a filling rate of the particles in an outermost layer is not greater than half of an average filling rate of the particles in an entirety of the voltage nonlinear resistance layer.

Abstract: A hose coupling fitting is furnished with a coupling head portion having a connecting hole, and a nipple portion having a nipple hole, and is fabricated through sequential cold forging steps carried out on a rod material. Specifically, a first pilot hole is formed along the center axis from a first end of the rod material, and a second pilot hole is formed along the center axis from the other end of the rod material. The second pilot hole is connected to the first pilot hole, and is formed with smaller diameter than the first pilot hole and larger diameter than the nipple hole. The surrounding area of the second pilot hole is then worked to form the nipple portion.

Abstract: A hose coupling fitting is furnished with a coupling head portion having a connecting hole, and a nipple portion having a nipple hole, and is fabricated through sequential cold forging steps carried out on a rod material. Specifically, a first pilot hole is formed along the center axis from a first end of the rod material, and a second pilot hole is formed along the center axis from the other end of the rod material. The second pilot hole is connected to the first pilot hole, and is formed with smaller diameter than the first pilot hole and larger diameter than the nipple hole. The surrounding area of the second pilot hole is then worked to form the nipple portion.

Abstract: A gas sensor (10) including a measurement chamber (28) into which a gas GS is flown and a detection element main body (40) facing the measurement chamber (28). The detection element main body (40) includes an element case 42, and a protective film (48) is adhered to a bottom surface thereof. An acoustic matching plate (50) and a piezoelectric element (51) of a substantially columnar shape and a tube body (52) provided in a position surrounding the acoustic matching plate 50 and the piezoelectric element 51 are housed in the element case (42). A filler is then introduced into the element case (42), whereby the acoustic matching plate (50), the piezoelectric element (51), and the tube body (52) are sealed by a filled layer (99).

Abstract: A gas sensor (10) including a measurement chamber (28) into which a gas GS is flown and a detection element main body (40) facing the measurement chamber (28). The detection element main body (40) includes an element case 42, and a protective film (48) is adhered to a bottom surface thereof. An acoustic matching plate (50) and a piezoelectric element (51) of a substantially columnar shape and a tube body (52) provided in a position surrounding the acoustic matching plate 50 and the piezoelectric element 51 are housed in the element case (42). A filler is then introduced into the element case (42), whereby the acoustic matching plate (50), the piezoelectric element (51), and the tube body (52) are sealed by a filled layer (99).