摘要:
In a process for producing a thermoplastic resin foam which comprises continuously heat-foaming a foamable thermoplastic resin sheet containing a heat-decomposable organic blowing agent with a heated gas, the improvement wherein a gas containing sublimation products generated by the heat-foaming of the foamable sheet is burned to decompose the sublimation products and obtain a treated gas having a substantially reduced content of the sublimation products, and the treated gas is then used as the heated gas for the heat-foaming of the foamable sheet; and a apparatus for producing a thermoplastic resin foam by continuously heat-foaming a foamable thermoplastic resin sheet, said apparatus comprising a heat-foaming chamber having an inlet portion for feeding the foamable thermoplastic resin sheet, an outlet portion for discharging the foamed sheet, a discharge port for a gas containing sublimation products generated by the heat-foaming of said foamable sheet, and a supply port for a heated gas, said discharge port and said supply port being connected by pipe lines to form a circulating pipe line, and said circulating pipe passage having a burning device for burning said gas containing sublimation products.
摘要:
[Problem] To provide a scintillator plate capable of improving the accuracy of radiation detection, and expanding the surface area for practical use while suppressing manufacturing costs, and also provide a radiation measuring apparatus, a radiation imaging apparatus, and a scintillator plate manufacturing method.[Solution] A scintillator plate (1) includes a scintillator (2) that generates scintillation light when excited by incident radiation. The scintillator plate (1) includes a scintillator layer (22) covered with scintillator powder (21) having an average particle diameter equal to or greater than the range of the radiation within the scintillator (2) when the radiation to be measured is either alpha rays, electron beams, or ion beams.
摘要:
A dynamic tumor radiation treatment program for causing a computer to function. The program includes detecting an annihilation gamma ray with a gamma ray detector, storing the threshold of counting rate in a displacement threshold memory, computing the counting rate according to the detection signal of an annihilation gamma ray with a gamma ray counting rate computer, comparing the counting rate of annihilation gamma rays acquired from the gamma ray counting rate computer with the threshold of the counting rate acquired from the displacement threshold storage memory by means of a threshold comparator, judging whether or not the tumor is displaced out of the radiation irradiation spot by means of a tumor position judging unit, and making a control to stop radiation irradiation or outputting a stop command signal by means of an irradiation controller.
摘要:
In a thermal-maintaining device (40) which is mounted to thermally maintain a pipe (3) for supplying urea water solution U stored in the inside of a tank (2) to an exhaust gas post-treatment device (100), a selecting part (50) which selectively outputs an ambient temperature signal (S2) when it is determined that the urea water solution (U) in the inside of the pipe (3) is frozen based on a flow state of the urea water solution (U) in the inside of the pipe (3), and selectively outputs a tank temperature signal (S1) when it is determined that the urea water solution (U) in the inside of the pipe (3) flows is provided. Further, a drive current (Y) necessary for thermal-maintenance is supplied to a heater (17A) in response to an output signal (S3) from the selecting part (50).
摘要:
A needled felt for papermaking use of the present invention comprises fibers (having a specific fineness or diameter) formed of a polyamide block copolymer, particularly, polyamide block copolymer having hard segments composed of polyamide components such as nylon 12 and soft segments composed of polyether components, the felt of the present invention is excellent in elasticity, recovery and durability compared with other fibers exhibiting rubber-like elasticity such as polyurethane elastic fibers, in addition, the felt of the present invention facilitate needling which has been difficult with prior art rubbery elastic fibers.
摘要:
A centrifugal compressor has diffusers which convert a high velocity, low pressure stream of fluid which flows out of an impeller to a high-velocity high-pressure flow due to the action of a purality of stator blades disposed near the outer periphery of the impeller. In this compressor, the portion of the stator blade or of an auxiliary blade which is provided in the diffuser located on the side of a front shroud is disposed closer to the impeller than the portion thereof located on the side of a main shroud, and the leading edge of the stator blade is thus inclined from the portion thereof located on the side of the main shroud to the portion thereof located on the side of the front shroud. The configuration of the front edge of a stator blade or of an auxiliary blade which is provided in the diffuser is so improved as to restrict back flow which occurs on the side of the front shroud when the flow rate is small and to lower the minimum flow rate. Furthermore, an auxiliary blade and an intermediate blade are disposed between the adjacent stator blades, and the leading edge of the auxiliary blade is so improved as to enlarge the operation range of the diffuser and to improve volume control greatly.
摘要:
In a turbo-refrigerator apparatus provided with a compressor in the form of a turbocompressor, a speed increasing gear system capable of switching from one speed increase ratio to another at least in two stages is located between the turbocompressor and an electric motor, so that a speed increase ratio suitable for the conditions of outdoor air can be selected to operate the apparatus with high efficiency. Housings of the turbocompressor, electric motor and speed increasing gear system are connected together in such a manner that a shaft supporting an impeller of the turbocompressor, an output shaft of the electric motor and shafts of the speed increasing gear system are located within the respective housings to render the apparatus hermetic to avoid extension of the rotary shafts through the housings, thereby avoiding leak of the working fluid of the turborefrigerator apparatus to outside.
摘要:
An apparatus for controlling the operation of a fluid pressure raising system having a motor and a centrifugal fluid machine adapted to be driven by the motor. The apparatus has an overdrive gear disposed between the motor, which is typically an electric motor suited for the commercially available electric power, and the centrifugal fluid machine. The overdrive gear consists of two gear trains or pairs having different overdrive ratios, each consisting of a gear and a pinion meshing with the gear, and a clutch adapted to selectively switch over the gear pair taking part in the torque transmission between the output shaft of the motor and the impeller shaft of the centrifugal fluid machine, from one gear pair to the other gear pair and vice versa. Thus, the overdrive gear can transmit the power of the motor to the impeller at two different overdrive ratios. The clutch is adapted to be actuated in response to a signal representative of an external condition of the fluid pressure raising system, which signal is delivered by a detector.
摘要:
In a multistage speed change gear system including a plurality of gears selectively interconnecting an input shaft and an output shaft located parallel to one another, the gears disposed concentric with the input shaft are supported by ball-and-roller bearings supported by at least one stationary member which is an entity separate from the input shaft. By this arrangement, relative movements occur between inner and outer races of the ball-and-roller bearings when a rotational force is transmitted from the input shaft to the output shaft, thereby preventing or reducing the development of fretting corrosion in the ball-and-roller bearings.
摘要:
[Problem] To provide a scintillator plate capable of improving the accuracy of radiation detection, and expanding the surface area for practical use while suppressing manufacturing costs, and also provide a radiation measuring apparatus, a radiation imaging apparatus, and a scintillator plate manufacturing method.[Solution] A scintillator plate (1) includes a scintillator (2) that generates scintillation light when excited by incident radiation. The scintillator plate (1) includes a scintillator layer (22) covered with scintillator powder (21) having an average particle diameter equal to or greater than the range of the radiation within the scintillator (2) when the radiation to be measured is either alpha rays, electron beams, or ion beams.