摘要:
A rotating anode X-ray tube includes a fixed body having a radial sliding bearing surface and a channel therein through which a coolant flows, a rotor including a discoid large-diameter portion, which has a recess fitted with one end portion of the fixed body with a clearance therebetween and constitutes an anode target, and a small-diameter portion, which has on an inner surface thereof a radial sliding bearing surface which faces the aforesaid radial sliding bearing surface with a clearance, and is united with the large-diameter portion at one end portion thereof, a lubricant filling the clearances, a cathode arranged opposite to the anode target, and a vacuum envelope which contains the fixed body, the rotor, the lubricant and the cathode, and fixes the fixed body at another end portion of the fixed body situated opposite the one end portion of the fixed body fitted in the recess.
摘要:
A rotating anode X-ray tube includes a fixed body having a radial sliding bearing surface and a channel therein through which a coolant flows, a rotor including a discoid large-diameter portion, which has a recess fitted with one end portion of the fixed body with a clearance therebetween and constitutes an anode target, and a small-diameter portion, which has on an inner surface thereof a radial sliding bearing surface which faces the aforesaid radial sliding bearing surface with a clearance, and is united with the large-diameter portion at one end portion thereof, a lubricant filling the clearances, a cathode arranged opposite to the anode target, and a vacuum envelope which contains the fixed body, the rotor, the lubricant and the cathode, and fixes the fixed body at another end portion of the fixed body situated opposite the one end portion of the fixed body fitted in the recess.
摘要:
A rotary anode X-ray tube apparatus according to an embodiment of the present invention includes a stationary shaft, a cooling bath that is provided in the stationary shaft, a rotary cylinder that is rotatably supported to the stationary shaft, a target that is provided in the rotary cylinder, a cathode that is disposed to face the target, and a vacuum enclosure that stores these components. The stationary shaft has a large-diameter portion provided in a portion thereof and is provided with a flow passage through which a cooling fluid flows. The cooling bath is provided by thinning the wall thickness of the large-diameter portion to increase the flow passage diameter of a portion of the flow passage. The rotary cylinder covers an area of the stationary shaft including the large-diameter portion through a liquid metal and is rotatably supported to the stationary shaft. The target has a hollow circular plate shape that is provided on an outer circumferential surface of the rotary cylinder. The vacuum enclosure stores the stationary shaft, the rotary cylinder, the target, and the cathode and supports the stationary shaft.
摘要:
A rotary anode X-ray tube apparatus according to an embodiment of the present invention includes a stationary shaft, a cooling bath that is provided in the stationary shaft, a rotary cylinder that is rotatably supported to the stationary shaft, a target that is provided in the rotary cylinder, a cathode that is disposed to face the target, and a vacuum enclosure that stores these components. The stationary shaft has a large-diameter portion provided in a portion thereof and is provided with a flow passage through which a cooling fluid flows. The cooling bath is provided by thinning the wall thickness of the large-diameter portion to increase the flow passage diameter of a portion of the flow passage. The rotary cylinder covers an area of the stationary shaft including the large-diameter portion through a liquid metal and is rotatably supported to the stationary shaft. The target has a hollow circular plate shape that is provided on an outer circumferential surface of the rotary cylinder. The vacuum enclosure stores the stationary shaft, the rotary cylinder, the target, and the cathode and supports the stationary shaft.
摘要:
A gradient coil for MRI is manufactured by including following steps; a stamping step of stamping a plurality of gradient coil pieces having predetermined patterns out of a conductor plate, a forming step of curving the stamped gradient coil pieces in conformity with a curvature of an outer circumferential surface of a bobbin, and a lamination step of superposing the curved gradient coil pieces one on another as a gradient coil(i.e., an x-coil and a y-coil). An insulating adherent sheet having a hole is interposed between the two superposed gradient coil pieces having curled patterns but opposite curling directions to each other. The inner ends of the two interposed coil pieces are electrically connected in series through the hole of the sheet and the outer ends of them provide current input and output terminals. Two pairs of saddle-like x-coils and two pairs of saddle-like y-coils and two solenoid z-coils are further laminated with insulating adherent sheets to form a gradient coil unit. Such a gradient coil unit can be applied to active shield-type gradient coil units.
摘要:
A pair of dies are provided of which die faces are formed with depressions sequentially brought into engagement with a particular portion of a workpiece as the workpiece rolls between the die faces. By compressing the workpiece while driving the same to roll between the die faces, an excess metal of the workpiece is caused to flow into the depressions sequentially for thereby forming an asymmetrical part of the article.
摘要:
A clathrate compound comprising a water-soluble microbicide and at least one of (a) a bisphenol compound represented by formula (I) and (b) deoxycholic acid represented by formula (II):(a) bisphenol compound ##STR1## where X is a halogen atom, and R is a methylene, ethylidene, propylidene or isopropylidene group;(b) deoxycholic acid ##STR2##
摘要:
A pair of dies are provided of which die faces are formed with depressions sequentially brought into engagement with a particular portion of a workpiece as the workpiece rolls between the die faces. By compressing the workpiece while driving the same to roll between the die faces, an excess metal of the workpiece is caused to flow into the depressions sequentially for thereby forming an asymmetrical part of the article.
摘要:
In systems which execute transactions with an ATM using an IC card in which plural account information is registered in advance, one or more transaction information and intended use information indicating the intended uses of transactions to be executed by the ATM based on the transaction information are associated with each other and are registered as transaction data in the storage section of the IC card, so as to certainly prevent transactions or selections of accounts which are not intended by the user from being erroneously executed. Prior to the execution of transactions by the ATM, the transaction data is read out for the ATM and the intended use information included in the transaction data are displayed along with said transaction information included in the transaction data, in a transaction selection screen on the ATM.
摘要:
In systems which execute transactions with an ATM using an IC card in which plural account information is registered in advance, one or more transaction information and intended use information indicating the intended uses of transactions to be executed by the ATM based on the transaction information are associated with each other and are registered as transaction data in the storage section of the IC card, so as to certainly prevent transactions or selections of accounts which are not intended by the user from being erroneously executed. Prior to the execution of transactions by the ATM, the transaction data is read out for the ATM and the intended use information included in the transaction data are displayed along with said transaction information included in the transaction data, in a transaction selection screen on the ATM.