Abstract: Provided are a novel tipburn-resistance marker for lettuce plant, a tipburn-resistant lettuce plant, and a production method for the tipburn-resistant lettuce plant that uses the tipburn-resistance marker. Disclosed is a tipburn-resistant lettuce plant that includes a tipburn-resistance gene locus on the 4th chromosome, the tipburn-resistance gene locus being specified by at least one SNP marker selected from the group that consists of NC_056626.1-271576390, NC_056626.274188377, NC_056626.1-274188380, and NC_056626.274188382.

Abstract: Provided is a casting mold with which it is possible to apply air-blow to a bottom part of a groove in a core without moving forward/backward the core relative to the mold body. This casting mold is provided with a first mold and a second mold for forming, between the first mold and the second mold, a cavity used to produce a cast article, wherein the second mold has a second mold body and a core, which protrudes from the second mold body in a first direction toward the first mold and is used to forms a hollow part in the cast article, the core is provided with a groove part that opens in the first direction and is recessed in a second direction opposite from the first direction, and the second mold is provided with an air supply flow passage for supplying air for blowing toward a bottom part of the groove part.

Abstract: Provided is a casting mold with which it is possible to apply air-blow to a bottom part of a groove in a core without moving forward/backward the core relative to the mold body. This casting mold is provided with a first mold and a second mold for forming, between the first mold and the second mold, a cavity used to produce a cast article, wherein the second mold has a second mold body and a core, which protrudes from the second mold body in a first direction toward the first mold and is used to forms a hollow part in the cast article, the core is provided with a groove part that opens in the first direction and is recessed in a second direction opposite from the first direction, and the second mold is provided with an air supply flow passage for supplying air for blowing toward a bottom part of the groove part.

Abstract: Provided are a casting die inspection method and a casting device, the method including: a step for acquiring the ultimate pressure in a cavity section, at the time when a prescribed vacuuming time has elapsed since evacuation the inside of the cavity section of the casting die was started; a step for evacuating the inside of the cavity section and acquiring an increased pressure in the cavity section that has increased during a prescribed stop time, at the time when the prescribed stop time has elapsed since the evacuation was stopped; a step for evaluating a first sealing property of the casting device on the basis of the ultimate pressure; and a step for evaluating a second sealing property of the casting device on the basis of the increased pressure.

Abstract: A decompression path conductance factor calculation device 110 obtains a cavity pressure change characteristic representing a pressure change characteristic of a cavity portion 30 from an exhaust speed of a decompression device 70, a cavity conductance factor, an overflow conductance factor, a decompression path conductance factor, and respective volumes of inside spaces of a cavity portion 30, an overflow portion 50, and a decompression path 60, obtains a decompression path pressure change characteristic representing a pressure change characteristic of the decompression path 60 from the exhaust speed of the decompression device 70, the volume of the inside space of the decompression path 60, and the decompression path conductance factor, and obtains the decompression path conductance factor such that a difference between respective approximate curves representing the obtained cavity pressure change characteristic and the obtained decompression path pressure change characteristic becomes a threshold value or

Abstract: A casting mold is provided with a cavity portion and an overflow portion, and the overflow portion is connected to a gas flow path (suction path). A valve (an on-off valve, a shut-off valve) is provided between the gas flow path and the overflow portion. A heating method for a casting mold includes a step of setting the pressure in the cavity portion to a second pressure by sucking gas in the overflow portion and in the cavity portion while the valve is kept open for a second time period shorter than a first time period during casting. The heating method further includes a step of heating the casting mold by supplying molten metal into the cavity portion set at the second pressure, and solidifying the molten metal.

Abstract: A cap member is used in a shut-off valve including a valve head in which a through hole is formed, the cap member including: a cap member main body screwed into the through hole; a first engaging portion for engaging with a first tool for screwing the cap member main body into the valve head; a second engaging portion formed inside the cap member main body to engage with a second tool for unscrewing the cap member main body from the valve head; and a wall portion covering the second engaging portion so that the second engaging portion is not exposed when the cap member is viewed from the first engaging portion toward the second engaging portion.

Abstract: A gas suction device of a casting mold includes an overflow portion, a suction path, and a shut-off valve. The shut-off valve includes a housing section for housing a valve element. An upstream-side housing portion of the housing section has an arc-shaped outer peripheral edge. The overflow portion includes an introduction path which is continuous with the upstream-side housing portion and guides gas to the upstream-side housing portion. At a predetermined location on the outer peripheral edge, the introduction path is connected to the upstream-side housing portion along the tangential direction of the outer peripheral edge.

Abstract: A casting mold is provided with a cavity portion and an overflow portion, and the overflow portion is connected to a gas flow path (suction path). A valve (an on-off valve, a shut-off valve) is provided between the gas flow path and the overflow portion. A heating method for a casting mold includes a step of setting the pressure in the cavity portion to a second pressure by sucking gas in the overflow portion and in the cavity portion while the valve is kept open for a second time period shorter than a first time period during casting. The heating method further includes a step of heating the casting mold by supplying molten metal into the cavity portion set at the second pressure, and solidifying the molten metal.

Abstract: A casting mold includes a cavity portion, a gas flow path, and a shut-off valve capable of blocking the gas flow path. An inspection method for the casting mold includes: a step of, when the casting mold is cold, supplying air having a predetermined pressure into the gas flow path while the shut-off valve is closed, and thereafter stopping supply of the air; a step of acquiring a cold time pressure reduction rate of the air in the gas flow path after the supply of the air is stopped; and a step of determining whether the cold time sealing performance of the shut-off valve is good, based on the cold time pressure reduction rate.

Abstract: A gas suction device of a casting mold includes an overflow portion, a suction path, and a shut-off valve. The shut-off valve includes a housing section for housing a valve element. An upstream-side housing portion of the housing section has an arc-shaped outer peripheral edge. The overflow portion includes an introduction path which is continuous with the upstream-side housing portion and guides gas to the upstream-side housing portion. At a predetermined location on the outer peripheral edge, the introduction path is connected to the upstream-side housing portion along the tangential direction of the outer peripheral edge.

Abstract: A cap member is used in a shut-off valve including a valve head in which a through hole is formed, the cap member including: a cap member main body screwed into the through hole; a first engaging portion for engaging with a first tool for screwing the cap member main body into the valve head; a second engaging portion formed inside the cap member main body to engage with a second tool for unscrewing the cap member main body from the valve head; and a wall portion covering the second engaging portion so that the second engaging portion is not exposed when the cap member is viewed from the first engaging portion toward the second engaging portion.

Abstract: A decompression path conductance factor calculation device 110 obtains a cavity pressure change characteristic representing a pressure change characteristic of a cavity portion 30 from an exhaust speed of a decompression device 70, a cavity conductance factor, an overflow conductance factor, a decompression path conductance factor, and respective volumes of inside spaces of a cavity portion 30, an overflow portion 50, and a decompression path 60, obtains a decompression path pressure change characteristic representing a pressure change characteristic of the decompression path 60 from the exhaust speed of the decompression device 70, the volume of the inside space of the decompression path 60, and the decompression path conductance factor, and obtains the decompression path conductance factor such that a difference between respective approximate curves representing the obtained cavity pressure change characteristic and the obtained decompression path pressure change characteristic becomes a threshold value or

Abstract: A work device includes a base unit, a movable unit configured to have an end effector mounted thereto, linking mechanisms linking the base unit to the movable unit, actuators fixed to the base unit for driving the plurality of linking mechanisms, respectively, and a controller that moves the end effector by operating the actuators. A certain linking mechanism out of the plurality of linking mechanisms includes a joint. The controller includes a joint angle determination unit that determines whether or not a bending angle of the linking mechanism at the joint is within an operable range.

Abstract: A work device includes a base unit, a movable unit configured to have an end effector mounted thereto, linking mechanisms linking the base unit to the movable unit, actuators fixed to the base unit for driving the plurality of linking mechanisms, respectively, and a controller that moves the end effector by operating the actuators. A certain linking mechanism out of the plurality of linking mechanisms includes a joint. The controller includes a joint angle determination unit that determines whether or not a bending angle of the linking mechanism at the joint is within an operable range.

Abstract: A chain connection link includes: a pair of U-shaped links of a U-shaped configuration in front view and each having two arms; a connection arm portion provided at an end portion of one arm of each of these U-shaped links; a connection groove-shaped arm portion having a groove and provided at an end portion of the other arm of each of these U-shaped links; and through-holes provided in the connection arm portion and the connection groove-shaped arm portion, the connection arm portion of one U-shaped link being fit-engaged with the connection groove-shaped arm portion of the other U-shaped link, a connection shaft being passed through the through-holes to connect the pair of U-shaped links, wherein the size of the outer periphery of the connection groove-shaped arm portion is larger than the size of the outer periphery of the connection arm portion.

Abstract: A chain connection link includes: a pair of U-shaped links of a U-shaped configuration in front view and each having two arms; a connection arm portion provided at an end portion of one arm of each of these U-shaped links; a connection groove-shaped arm portion having a groove and provided at an end portion of the other arm of each of these U-shaped links; and through-holes provided in the connection arm portion and the connection groove-shaped arm portion, the connection arm portion of one U-shaped link being fit-engaged with the connection groove-shaped arm portion of the other U-shaped link, a connection shaft being passed through the through-holes to connect the pair of U-shaped links, wherein the size of the outer periphery of the connection groove-shaped arm portion is larger than the size of the outer periphery of the connection arm portion.

Abstract: Disclosed is a directional bar-type antenna which comprising a plurality of bar-shaped antenna elements including a core and a coil wound around the core. The first bar-shaped antenna element is disposed at a position of a mirror image of the second bar-shaped antenna element with respect to the core of the third bar-shaped antenna element. The first and second bar-shaped antenna elements is positioned such that one end of each of the first and second bar-shaped antenna elements is close to the third bar-shaped antenna element, and the other end is far from the third bar-shaped antenna element. In the present invention, a winding direction of the coil of the first bar-shaped antenna element is preferably identical to that of the coil of the second bar-shaped antenna element, and is opposite to that of the coil of the third bar-shaped antenna element.

Abstract: A brake-equipped retracting device (3) returns a liquid crystal display device (1) from a deployed position (1B) to a stored position (1A) using an elastic returning force of a spiral spring (18) that is wound up when the liquid crystal display device (1) is opened by the rotational force of a motor. A braking force for preventing the liquid crystal display device (1) from returning with too much force is applied to an input shaft (17a) of a reducer by having a rope (21) whose tensile force increases and decreases in relation to the opening and closing of the liquid crystal display device (1) be wound around a slip clutch (15) that is connected to the input shaft (17a). In emergency situations such as when the rope (21) breaks, a centrifugal grip (53) of a rotation-restraining mechanism (50) strikes an engagement notch surface (56b) on a fixed side, and the rotation of the input shaft (17a) is forcibly halted.

Abstract: Disclosed is a directional bar-type antenna which comprising a plurality of bar-shaped antenna elements including a core and a coil wound around the core. The first bar-shaped antenna element is disposed at a position of a mirror image of the second bar-shaped antenna element with respect to the core of the third bar-shaped antenna element. The first and second bar-shaped antenna elements is positioned such that one end of each of the first and second bar-shaped antenna elements is close to the third bar-shaped antenna element, and the other end is far from the third bar-shaped antenna element. In the present invention, a winding direction of the coil of the first bar-shaped antenna element is preferably identical to that of the coil of the second bar-shaped antenna element, and is opposite to that of the coil of the third bar-shaped antenna element.