摘要:
Provided is a wind power generator that reduces the amount of heat input into a nacelle from the outside of the nacelle due to the solar radiation, and that improves the heat dissipation performance from the inside of the nacelle to the outside air. In a wind power generator in which a driving mechanism and power generation mechanism that are connected with a rotor head, to which wind-turbine blades are attached, are accommodated and installed in a nacelle, an outer wall surface of the nacelle is provided with, on at least a part of the wall surface where no direct sunlight is radiated, a heat-dissipation-resistance reducing portion that uses a member having a higher thermal conductivity than that of a peripheral wall member.
摘要:
A wind power generator is provided in which a reduction in weight is achieved by reducing the wall thickness of a nacelle, and an increase in the amount of heat input to the interior of the nacelle from sunlight is suppressed. In a wind power generator in which driving/power-generating mechanisms linked to a rotor head to which wind-turbine blades are attached are accommodated and installed inside a nacelle, a coating of high-reflectivity paint is formed on at least part of the outer wall that receives sunlight.
摘要:
A base station device may include, but is not limited to: a mapping unit; and at least one reception antenna. The mapping unit is configured to assign a plurality of first subcarriers to a first communication device, and assign a part of the plurality of first subcarriers to at least one other communication device. The at least one reception antenna is configured to receive from one of the first communication device and the at least one other communication device, a plurality of frequency signals allocated to the plurality of first subcarriers. Each of the plurality of frequency signals is converted from coded transmission data of the one of the first communication device and the at least one other communication device.
摘要:
The endoscope system of the present invention includes: an endoscope that has an image pickup device that picks up an observation image of a test object; an image display unit that converts image pickup signals that have been sent from the image pickup device into images and then displays these images; a first mounting portion that is provided in an operating section of the endoscope and on which the image display unit is mounted; and a second mounting portion that is provided in the operating section of the endoscope and on which the image display unit is mounted in a different position from that of the first mounting portion.
摘要:
Disclosed is an electromagnetic casting method of a silicon ingot in which a polycrystalline silicon ingot is continuously cast by charging silicon raw materials into a bottomless cold copper mold, melting the charged silicon raw materials through electromagnetic induction, pulling down to solidify the molten silicon, in which the length of a part of copper mold positioned below a lower end of an induction coil surrounding the copper mold is set to more than 40 mm and 180 mm or less. According to this method, a copper contamination of a silicon ingot incurred by a copper cold mold can be suppressed to produce a silicon ingot which is suitable as a starting material of the substrate of a solar cell.
摘要:
A communication device includes a turbo encoding section including a plurality of component encoders, wherein the plurality of component encoders within the turbo encoding section use different constraint lengths.
摘要:
Disclosed is a fuel cell comprising an electric cell in which an anode is formed on one surface of an electrolyte and a cathode is formed on the other surface of the electrolyte; a fuel gas supply section which is disposed on a side of the anode and which is formed with a fuel gas supply flow passage through which fuel gas is supplied to the anode; and an oxidation gas supply section which is disposed on a side of the cathode and which is formed with an oxidation gas supply flow passage through which oxidation gas is supplied to the cathode, wherein at least one flow passage of the fuel gas supply flow passage and the oxidation gas supply flow passage is substantially rectangular in shape.
摘要:
A photocurrent amplifier circuit which can be realized as a simple and downsized photocurrent amplifier circuit is capable of selectively amplifying, in an amplifier circuit in an output stage, one or more of current signals which are respectively obtainable from light receiving circuits. The photocurrent amplifier circuit includes: light receiving circuits; amplifier devices associated with the light receiving circuits; device selector switches which apply input voltages, which deactivate the amplifier devices, to the associated amplifier devices; and a differential amplifier circuit having an inverting input unit configured of the amplifier devices which are connected in parallel. The inputs of the amplifier devices and the output of the differential amplifier circuit are connected by gain resistors. The differential amplifier circuit amplifies, into voltage signals, current signals flowing from the light receiving circuits which are respectively associated with the gain resistors.
摘要:
It is to provide a brush-equipped motor enabled to be used for a long time without performing operations and without interruption even when the brush wears out. When a rotor is caused to perform a turning operation, cam projections similarly start to perform a turning operation. Then, an abutting part, at which each of the cam projections contacts with a spring piece part of a corresponding one of the first brushes, gradually moves to an end of the first brush. Thus, the spring piece part of each of the first brushes is gradually and elastically deformed in a direction in which brush bodies come away from a commutator. When the turning operation continues still more, an end of each of the second brushes comes off a corresponding one of the cam projections, so that the brush bodies thereof contact with the surface of the commutator.
摘要:
A metallic implant base is coated with two bioactive ceramic layers. An inner bioactive ceramic layer is coated on the implant base. An outer bioactive ceramic layer is coated on the inner bioactive ceramic layer. The inner bioactive layer is vitrified at a ratio of not less than 50 volume percent, thereby improving the bonding of the inner bioactive layer to the metallic implant base and preventing migration of the metal ions from the metallic implant base. The outer bioactive ceramic layer is vitrified to a ratio of substantially less than 50 volume percent, thereby providing a desired porosity.