Abstract: A liquid supply system providing a stable pump operation even when ultra-low temperature liquid including slurry is set as a liquid feed target. The liquid supply system that supplies ultra-low temperature liquid including a slurry component by expansion and contraction of bellows 41 and 42. At least a region in the bellows 41 and 42 that is in contact with the liquid is coated with resin having a low temperature brittle temperature that is equal to or lower than an operating temperature of the liquid supply system.

Abstract: A liquid supply system that enables a reduction in time required for precooling to reduce the time taken to make a pump operable. A container 130 includes a first casing 131 in which fluid passages passing through a first pump chamber P1 and a second pump chamber P2 are provided and a second casing 132 that surrounds the outer wall of the first casing 131. A space (fourth space K4) between the first casing 131 and the second casing 132 is configured to allow a cryogenic liquid for precooling to flow through it.

Abstract: A liquid supply system includes first and second bellows 41 and 42 arranged in series in an expanding/contracting direction thereof in a vessel 12 and having first end portions respectively, which are close to each other and fixed to an inner wall of the vessel 12, and also having second end portions respectively, which are distant from each other and movable in the expanding/contracting direction. An inner space of the vessel 12 located outside the first bellows 41 serves as a first pump chamber P1. An inner space of the vessel 12 located outside the second bellows 42 serves as a second pump chamber P2. An inner space of the vessel 12 located inside the first and second bellows 41 and 42 serves as a sealed space R1. A shaft 15 to which the respective second end portions of the first and second bellows 41 and 42 are fixed is reciprocally moved to expand/contract the first and second bellows 41 and 42.

Abstract: A liquid supply system providing a stable pump operation even when ultra-low temperature liquid including slurry is set as a liquid feed target. The liquid supply system that supplies ultra-low temperature liquid including a slurry component by expansion and contraction of bellows 41 and 42. At least a region in the bellows 41 and 42 that is in contact with the liquid is coated with resin having a low temperature brittle temperature that is equal to or lower than an operating temperature of the liquid supply system.

Abstract: A liquid supply system includes first and second bellows 41 and 42 arranged in series in an expanding/contracting direction thereof in a vessel 12 and having first end portions respectively, which are close to each other and fixed to an inner wall of the vessel 12, and also having second end portions respectively, which are distant from each other and movable in the expanding/contracting direction. An inner space of the vessel 12 located outside the first bellows 41 serves as a first pump chamber P1. An inner space of the vessel 12 located outside the second bellows 42 serves as a second pump chamber P2. An inner space of the vessel 12 located inside the first and second bellows 41 and 42 serves as a sealed space R1. A shaft 15 to which the respective second end portions of the first and second bellows 41 and 42 are fixed is reciprocally moved to expand/contract the first and second bellows 41 and 42.

Abstract: In this valve structure, in a state in which a reciprocating member moves towards the seat surface, a valve body moves to the position where the valve unit sits on the valve seat, and with the movement of the reciprocating member in the direction away from the seat surface, the valve body moves in the direction in which the valve unit moves away from the valve seat. The valve structure includes a seal member that has a seal lip slidably contacting the surface of the valve body. The valve body has a separating unit which separates from the seal lip to form a gap between the valve body and the seal lip, and the separating unit is configured such that the amount of fluid passing through the gap between the valve body and the seal lip increases as the valve unit moves away from the valve seat.

Abstract: A nonwoven fabric which contains pitch-based carbon fibers having a high elongation and a high elastic modulus which are not attained in the prior art and is obtained by improving the tensile elongation of carbon fibers derived from mesophase pitch, a felt obtained from the nonwoven fabric, and production processes therefore. The nonwoven fabric contains pitch-based carbon fibers, wherein the pitch-based carbon fibers have (i) an average fiber diameter (D1) measured by an optical microscope of more than 2 ?m and 20 ?m or less, (ii) a percentage of the degree of fiber diameter distribution (S1) to average fiber diameter (D1) measured by an optical microscope of 3 to 20%, (iii) a tensile elastic modulus of 80 to 300 GPa and (iv) a tensile elongation of 1.4 to 2.5%.

Abstract: A gate valve has a valve case formed with through holes at facing positions, a valve assembly having a pair of valve plates connected via bellows and arranged inside the valve case, a support rod for supporting this valve assembly at its front end, bellows for sealing the valve case side and support rod side, and air cylinders for making the valve assembly move between the open position and closed position through the support rod. The valve case is formed with an opening through which the valve assembly can pass and has a lid detachably attached to the valve case by bolts so as to close the opening. The bolts are tightened or loosened through the opening so that the valve assembly can be attached to or detached from the support rod.

Abstract: A gate valve having a valve body, a valve rod, a regulation device, a cam mechanism and a drive for supplying a straight-move force to the cam mechanism is provided. The valve rod is held so that it can move in a straight-move direction of opening and closing the valve via a pair of linear guides provided on both sides of the valve rod.

Abstract: A gate valve having a valve body, a valve rod, a regulation device, a cam mechanism and a drive for supplying a straight-move force to the cam mechanism is provided. The valve rod is held so that it can move in a straight-move direction of opening and closing the valve via a pair of linear guides provided on both sides of the valve rod.

Abstract: A gate valve includes: a valve plate; a valve rod which the valve plate is fixed to and is supported to be able to tilt; a seal bellows and a dust sealing portion; a stopper member; a tilting cam mechanism which converts supplied straight moving force into tilting force, and tilts the valve rod of which the straight movement is restricted at a closed position in the direction where the valve plate 2 seals an aperture; a seal-releasing cam mechanism which tilts the valve rod in the direction to release the sealing of the valve plate; and an air cylinder as an actuator which supplies the straight movement force for the tilting cam mechanism and the seal-releasing cam mechanism.

Abstract: A gate valve includes: a valve plate 2; a valve rod 6 which the valve plate 2 is fixed to and is supported to be able to tilt; a seal bellows 10 and a dust sealing portion 90; a stopper member 12 as a restriction means; a tilting cam mechanism 31 which converts supplied straight moving force into tilting force, and tilts the valve rod 6 of which the straight movement is restricted at a closed position in the direction where the valve plate 2 seals an aperture 51; a seal-releasing cam mechanism 70 which tilts the valve rod 6 in the direction to release the sealing of the valve plate 2; and an air cylinder 60 as an actuating means which supplies the straight moving force for the tilting cam mechanism 31 and the seal-releasing cam mechanism 70.

Abstract: A composition for in vivo inhibition of aromatase in a mammal, which comprises an in vivo inhibitory amount of a compound having the following general formula: ##STR1## wherein R.sub.1 is hydrogen or C.sub.1-20 acyl, in combination with a pharmaceutically acceptable carrier or diluent thereof.

Abstract: A composition for in vivo inhibition of aromatase in a mammal, which comprises an in vivo inhibitory amount of a compound having the following general formula: ##STR1## wherein R.sub.1 is hydrogen or C.sub.1-4 acyl, in combination with as pharmaceutically acceptable carrier or diluent thereof.

Abstract: A composition for in vivo inhibition of aromatase in a mammal, which comprises an in vivo inhibitory amount of a compound having the following general formula: ##STR1## wherein R.sub.1 is hydrogen or C.sub.1-4 acyl, in combination with a pharmaceutically acceptable carrier or diluent thereof.

Abstract: A fume hood forming an experimental work space includes a sensor for detecting an air speed within the exhaust duct. The sensor is provided in a by-pass section which is positioned on the exhaust duct and in communication with the ambient air.