摘要:
A pulse voltage having a frequency of 15 kHz is applied from a discharging power supply unit (48) to between a crankshaft (12) and an electrode plate (45) at a current density of 2.5 mA/cm2 to generate a glow discharge and an electric heater (34) is driven at a 40% output (64 kW/kg) to heat the crankshaft (12) to up to 400° C., and then heating is continued with the current density of a glow discharge set at 0.5 mA/cm2 and the output of the electric heater (34) set at 90% (144 kW/kg), thereby effecting nitriding at a desired nitriding temperature.
摘要:
Provide a nuclear reactor power monitoring technology for enhancing the monitoring accuracy and reliability in nuclear thermal hydraulic stability.A power monitor 30 includes a first calculation unit 42,52 configured to calculate a first stability index based on time series data indicating power oscillation in nuclear instrumentation signals outputted from a plurality of nuclear instrumentation detectors 31; a first determination unit 44,53 configured to compare the first stability index and a first reference value and determine whether nuclear thermal hydraulic stability of the reactor core is stable or deteriorated; a second calculation unit 46,54 configured to calculate a second stability index of the reactor core based on the time series data when the deteriorated state is determined in the first determination unit 44,53; and a second determination unit 47,55 configured to compare the second stability index and a second reference value and determine whether to perform suppressing operation of the power oscillation.
摘要:
In order to examine whether or not a germ cell derived from a donor fish, which has been transplanted into a recipient fish of a different species by a surrogate fish technique, grows or matures in the gonad of the recipient fish, it is necessary to use, as an indicator, a trait that is specifically expressed in the germ cell and can be used to distinguish the recipient fish from the donor fish. Vasa gene, which is a germ cell-specific gene, is specific to a primordial germ cell and a spermatogonium/an oogonium, and it is not expressed in a somatic cell. In the present invention, the Vasa gene sequences of a tuna, a chub mackerel, a spotted mackerel, an eastern little tuna, and a drumfish are determined, and the expression of such gene is used as a marker for a germ cell. In addition, according to the present invention, it is possible to specifically detect only a tuna Vasa gene in Vasa gene sequences that are highly conserved in fishes, without sequencing. Thus, a tuna-derived germ cell can be reliably and simply identified in the gonad of the recipient fish. As a result, the growth or breeding of tuna can be carried out with good efficiency. Moreover, utilizing the aforementioned findings, even in a case in which not only a tuna but also another Perciformes fish is used as a donor, a germ cell derived from the donor fish can be efficiently detected from the gonad of a recipient fish of a different species.
摘要:
A method is provided of forming multilayer coating films having a high quality appearance while controlling interfacial bleeding or inversion between coating film layers otherwise found when a water-borne intermediate coating film and a water-borne metallic coating film are formed in that order. The method comprising forming coating films one after another on a substrate, namely forming an intermediate coating film using a water-borne intermediate coating, a metallic base coating film using a water-borne metallic base coat and a clear coating film using a clear coat, wherein said water-borne intermediate coating and/or said water-borne metallic base coat contains a polycarbodiimide compound and a carboxyl-containing aqueous resin.
摘要:
A scanner for reading an object having a width larger than that of the distal end portion of a scanner main body, has an exit opening for outputting a light beam formed at the distal end portion of the scanner main body. An LED for generating a light beam, and a solid-state image pickup element for receiving the light beam which is reflected by the code, are arranged in the scanner main body. A gap portion for increasing the irradiation width of the light beam to be larger than the width of the distal end portion of the scanner main body is formed at the distal end portion of the scanner main body. Therefore, when a code is read by bringing the scanner main body close to or into contact with the code, the gap portion increases the width of the light beam to be larger than that of the distal end portion of the scanner main body, and therefore, a code having a width larger than the width of the distal end portion of the scanner main body can be read.
摘要:
A second conductivity type well is formed in a first conductivity type semiconductor substrate. Vertical CCD channels of the first conductivity type are formed in the second conductivity type well. Vertical transfer electrodes are formed above the vertical CCD channels to form vertical CCDs along with the vertical CCD channels. A first impurity diffusion layer is formed in the well by implanting first conductivity type impurities along a first direction crossing the normal direction of the semiconductor substrate. A second impurity diffusion layer is formed in the well by implanting first conductivity type impurities along a second direction crossing the normal direction of the semiconductor substrate. A third impurity diffusion layer of the second conductivity type is formed between the first and second impurity diffusion layer. A fourth impurity diffusion layer of the second conductivity type is formed in the well above the first to third impurity diffusion layers.
摘要:
The invention is intended to simplify a default mechanism of a throttle valve opening and closing device for the purpose of improving mountability of the device to a vehicle. When a motor generate no driving forces, a throttle valve is held in a position (1) by a return spring. In this position, gaps are formed between the throttle valve and a wall surface of an intake passage. Spherical recesses are formed in parts of the wall surface of the intake passage. In a position (2) where the throttle valve is opposed to the spherical recesses, the gaps are minimized in an operating range of the throttle valve.
摘要:
A second conductivity type well is formed in a first conductivity type semiconductor substrate. Vertical CCD channels of the first conductivity type are formed in the second conductivity type well. Vertical transfer electrodes are formed above the vertical CCD channels to form vertical CCDs along with the vertical CCD channels. A first impurity diffusion layer is formed in the well by implanting first conductivity type impurities along a first direction crossing the normal direction of the semiconductor substrate. A second impurity diffusion layer is formed in the well by implanting first conductivity type impurities along a second direction crossing the normal direction of the semiconductor substrate. A third impurity diffusion layer of the second conductivity type is formed between the first and second impurity diffusion layer. A fourth impurity diffusion layer of the second conductivity type is formed in the well above the first to third impurity diffusion layers.
摘要:
A linear/rotary actuator capable of carrying out linear motion at a high speed. A linear motor is used as a linear driving motor. The linear motor has a linear shaft connected to an output shaft of a rotary driving motor through an intermediate bearing structure. The output shaft of the rotary driving motor is provided with a forward spline section. A nut fitted on the forward spline section is fixed in a revolving shaft supported on a forward bearing structure. The output shaft is formed on a rearward portion thereof with a rearward spline section. The portion of the output shaft on which the rearward spline section is formed is slidably and rotatably supported.
摘要:
A system for monitoring power, particularly a power distribution, of a nuclear reactor includes a plurality of neutron flux measuring units disposed in a core of the nuclear reactor for measuring neutron flux in the core and generating neutron flux signals. A unit, generally constructed by a process computer, for calculating a neutron flux distribution in the core in response to the neutron flux detection signals from the neutron flux measuring units, is provided. A unit for calculating a higher mode of the neutron flux distribution in accordance with results of calculations performed by the neutron flux distribution calculating unit, is provided. A filter calculating unit is provided for obtaining a filter for extracting characteristics of change of the neutron flux detection signal in response to the neutron flux detection signal and an input/output unit for transmitting the neutron flux detection signal filtered by the filter obtained by the filter calculating unit.