Abstract: Provided are a wind turbine blade that can reduce the thickness of a turbulent-flow boundary layer generated on the blade surface of a blade tip portion to prevent noise generated at a trailing edge portion effectively, as well as a wind power generator using the same. Provided is a wind turbine blade, which is a wind turbine blade having an airfoil shape in cross section, wherein an angle-of-attack decreasing portion that decreases an angle of attack during rotation at at least a predetermined rotational speed is provided over a predetermined range from a blade tip to a blade root side.

Abstract: A reel part is provided for a fishing reel. The reel part includes an inner member and an outer member. The inner member has a surface treatment layer. The outer member is fixed to an outer peripheral side of the inner member. The outer member includes a processed part that is processed after being fixed to the inner member.

Abstract: A one-way clutch for a fishing reel includes an outer race, an inner race, a first roller, a second roller, and a cam surface. The first roller is disposed between the outer race and the inner race, and is disposed to make contact with the outer race and the inner race. The second roller is disposed between the outer race and the inner race, and is disposed to make contact with the outer race and the inner race. The cam surface is disposed on either an inner peripheral surface of the outer race or an outer peripheral surface of the inner race, and is disposed to allow the first roller and the second roller being stuck with the cam surface. The first roller has a coefficient of friction greater than a coefficient of friction of the second roller.

Abstract: Provided is a wave-power generator capable of adjusting a natural period (natural frequency) in response to a changing wave period. The wave-power generator includes a weight that is installed in a floating body via a spring and that linearly reciprocates in response to a fluctuation of a water surface and a generator that generates power by being driven based on the linear reciprocating motion of the weight. An additional-mass body for adding a mass to the mass of the weight is further included.

Abstract: Provided is a railway vehicle having a configuration which can sufficiently protect the cabin even when large external force is applied to the end structures thereof. The vehicle body of the railway vehicle is formed by joining an underframe 20, side structures 30, end structures 50, and a roof structure 60 together. An upper reinforcement beam 56 in the railroad tie direction is disposed at the upper portion of the end structure. A plurality of post reinforcement members are disposed in the vertical direction so as to stand on an end beam 26 of the underframe. The post reinforcement members and the upper reinforcement beam are respectively connected by an end post in the vertical direction disposed at an intermediate portion in the end structure width direction and corner posts 54 in the vertical direction disposed at both end portions in the end structure width direction.

Abstract: The gas-supply system includes a gas supply device that automatically supplies gas on the basis of the detection result of a pressure sensor that detects the pressure within a body cavity such that the pressure within the body cavity becomes a predetermined pressure, and a gas supply pipe for supplying the gas supplied from the gas supply device into the body cavity. The gas supply pipe is provided with a side face light leakage type optical fiber, and the gas supply pipe functions as a linear light emitter by controlling lighting of an LED according to the supply state of the gas due to the gas supply device and makes the light from the LED incident on the side face light leakage type optical fiber. Therefore, the supply state of the gas supplied into the body cavity may be easily grasped.

Abstract: By means of a simple structure, lightning resistance is improved without increasing the level of fluid noise due to a lightning discharge member provided on a surface of a wind turbine blade. A wind turbine rotor blade lightning discharger, in which a diverter strip serving as a lightning discharge member protrudes from a surface of a wind turbine blade that extends in a radial direction from a rotor head supported in a freely rotatable manner, includes a noise suppressing structure that suppresses the generation of a Karman vortex, which causes noise, on the downstream side of the diverter strip with respect to an airflow that flows at the surface of the wind turbine blade during rotation of the wind turbine rotor blade.

Abstract: There are provided a TMD adjusted to damp vibration in a natural frequency of a wind turbine, an AVC adjusted to damp vibration in a variable frequency of turbulent wind flowing into the wind turbine and/or a frequency of a rotation speed of a wind-turbine blade, and a pitch-angle control portion provided with a correction portion which adjusts a damping frequency of the AVC. The AVC is configured to obtain the damping force by changing the pitch angle of the wind-turbine blade.

Abstract: Provided is a railway vehicle having a configuration which can sufficiently protect the cabin even when large external force is applied to the end structures thereof. An end structure 50 is disposed at an end portion of the vehicle body 11 through a crushable zone 40. The end structure is provided with an end post, corner posts, and an upper reinforcement beam 56. The lower end portions of the end post and the corner posts are joined to an end beam 26 of an underframe, and the upper end portions of the end post and the corner posts are joined to the upper reinforcement beam, respectively. In the crushable zone, there are provided a lower slide portion and an upper slide portion. The lower slide portion is configured by connecting a slide center beam projecting from a center portion of an end beam of the underframe in a direction of a cap beam with a guide center beam projecting from the cap beam in a vehicle end direction by a lower fuse member.

Abstract: Provided is a railway vehicle having a configuration which can sufficiently protect the cabin even when large external force is applied to the end structures thereof. The vehicle body of the railway vehicle is formed by joining an underframe 20, side structures 30, end structures 50, and a roof structure 60 together. An upper reinforcement beam 56 in the railroad tie direction is disposed at the upper portion of the end structure. A plurality of post reinforcement members are disposed in the vertical direction so as to stand on an end beam 26 of the underframe. The post reinforcement members and the upper reinforcement beam are respectively connected by an end post in the vertical direction disposed at an intermediate portion in the end structure width direction and corner posts 54 in the vertical direction disposed at both end portions in the end structure width direction.

Abstract: The impact absorbers having different lengths are formed by providing notches in one of opposed surfaces on front end side in a collision direction of a square pipe having a square in cross section. The three impact absorbers are disposed in a width direction while two impact absorbers are disposed in a height direction such that directions of the notches differ from each other, and the impact absorbers are disposed in integrally welded to form the impact-absorbing member.

Abstract: A slide structure 21 of a railway vehicle includes a slide end beam 22 disposed in front of an end beam 16 that constitutes a portion of a body, and a slide center beam 23 projecting rearward of the slide end beam. An underframe 12 is provided with a guide portion 24 that guides the slide center beam in the longitudinal direction of the body. The underframe 12 is also provided with a holding member 28 that holds the slide center beam at a front position of the body with respect to the guide portion. The holding member has such a tensile strength that the holding member couples the underframe and the slide structure to each other in the longitudinal direction of the body and the holding member is broken when a tensile load in a rearward direction of the body applied from the slide structure to the holding member exceeds a preset tensile load, thereby permitting the slide structure to move in the rearward direction of the body.

Abstract: A lightning strike detector that can promptly detect a lightning strike to ensure safety and can accurately determine the position struck by the lightning with a simple, inexpensive, and highly reliable structure, is provided. The lightning strike detector includes an environment-detecting sensor member that detects a change in the environment of the internal space of a wind turbine blade, serving as a hollow structure, when the wind turbine blade is struck by lightning and is damaged, converts the environmental change into an electrical signal, and outputs the electrical signal; and a control unit (nacelle-side control system and ground-side control system) that receives the electrical signal, judges whether a lightning strike has occurred, and takes countermeasures against the lightning strike.

Abstract: A lightning-strike detecting apparatus comprises: receptors (lightning members) that are provided at a plurality of locations on a wind turbine blade; lightning conductors that extend from these receptors to guide lightning-strike current to ground; a plurality of optical-fiber current sensors that are provided on the respective lightning conductors, detect lightning-strike current flowing in the lightning conductors, and output an optical signal; an optical signal converter that receives the individual optical signal output from these optical-fiber current sensors, converts the optical signals to the respective characteristic electrical signals, and outputs the electrical signals; and a controller that identifies the type of the electrical signal input from the optical signal converter, determines a lightning-strike spot on the basis of the type, and reports the lightning-strike spots.

Abstract: A handle arm mounting structure for a fishing reel includes a fastening section and a washer member. The fastening section has a first non-circular hole configured to engage non-rotatably with a non-circular section of a handle shaft. The washer member has a circular disk-like section and an engaging protrusion and is configured to be mounted in an axial direction on the handle shaft. The circular disk-like section has a second non-circular hole that engages with the non-circular section. The engaging protrusion protrudes toward the first non-circular hole from a periphery of the second non-circular hole. The engaging protrusion has an inside surface configured to engage with the non-circular section and an outside surface having a first tapered surface that tapers toward a tip end and engages with the first non-circular hole.

Abstract: Gases are smoothly and automatically switched when using two gas supply sources, that is, an air pump and a carbon dioxide gas cylinder. By using a gas supply flow rate adjusting unit, a carbon dioxide gas is supplied to an endoscope, and a gas using a carbon dioxide gas and water are delivered. When the remaining amount of the carbon dioxide gas of the cylinder is detected and the detected pressure of the carbon dioxide gas becomes less than a predetermined value, the air pump is rotated to supply pressurized air. The rotation number of the air pump is controlled, and the same amount of pressurized air is supplied as that of the supplied carbon dioxide gas. The switching to the pressurized air is automatically performed. The supply amounts before and after the switching become equal to each other, and a surgical operator does not feel any discomfort.

Abstract: A one-way clutch for a fishing reel includes an outer race, an inner race, a first roller, a second roller, and a cam surface. The first roller is disposed between the outer race and the inner race, and is disposed to make contact with the outer race and the inner race. The second roller is disposed between the outer race and the inner race, and is disposed to make contact with the outer race and the inner race. The cam surface is disposed on either an inner peripheral surface of the outer race or an outer peripheral surface of the inner race, and is disposed to allow the first roller and the second roller being stuck with the cam surface. The first roller has a coefficient of friction greater than a coefficient of friction of the second roller.

Abstract: An endoscopic gaseous material feed system comprises an endoscope 1 having a solid-state image sensor device 81 incorporated into a fore distal end portion of an elongated endoscopic insertion rod to be introduced into a body cavity of a patient or examinee, a gas feeder 3 loaded with a gas tank 60 which is packed with carbon dioxide gas to be sent to the body cavity, a light source 2 incorporating an air pump to supply air to the body cavity, a processor 4 for generating video signal data of an endoscopically captured picture image on the basis of electric signals from the solid-state image sensor 81, a detector 87 provided in the processor 4 and adapted to detect whether or not the endoscope is currently placed in a body cavity, from video signal data of the processor, and a feed gas source controller 85 provided in the processor and adapted to permit a supply of carbon dioxide gas or air when the detector 87 makes an affirmative judgment that the endoscope 1 is currently placed in a body cavity and to proh

Abstract: An endoscopic gaseous material feed system comprises a gas feeder 3 having a gas tank 60 containing carbon dioxide gas, a light source 2 incorporating an air pump 23 for air supply, an endoscope 1 internally having a gaseous material passage for a gas or air supply to a body cavity of a patient or examinee, and a controller 80 adapted to put the air pump 23 of the light source 2 in a deactivated state upon detection of a start of a carbon dioxide gas supply from the gas feeder 3.

Abstract: The present invention relates to a photosensitive resin composition excellent in pliability, ultraviolet sensitivity for development, developability with an aqueous alkali solution, and storage stability at room temperature and a circuit substrate employing the same. The photosensitive resin composition includes a siloxane-containing polyamic acid resin having structural units respectively represented by the following formulae (1), (2), and (3) and a photopolymerization initiator incorporated therein. The circuit substrate is coated with the photosensitive resin composition.