Abstract: An airflow generation device of an embodiment includes a dielectric base, a first electrode, a second electrode, a third electrode, and a power supply. The dielectric base has a main surface. The first electrode is disposed on the main surface. The second electrode is disposed in the dielectric base with an interval from the first electrode in a first direction along the main surface. At least a part of the third electrode is disposed at a position in the dielectric base, between the first electrode and the second electrode in the first direction, and deeper than the second electrode. The power supply applies voltages for causing discharge to the first, second, and third electrodes.

Abstract: An airflow control device 10 in an embodiment includes: a vortex shedding structure portion 20 discharging an airflow flowing on a surface in a flow direction as a vortex flow; and a first electrode 40 and a second electrode 41 disposed on a downstream side of the vortex shedding structure portion 20 via a dielectric. By applying a voltage between the first electrode 40 and the second electrode 41, flow of the airflow on the downstream side of the vortex shedding structure portion 20 is controlled.

Abstract: A metallic seat structure member with a surface roughened is placed within a forming die, into which synthetic resin is injected for molding. This provides a vehicle seat structure in which leg portions of a strength member made of synthetic resin are fixed to the roughened surface of the seat structure member.

Abstract: A voltage application device of an embodiment applies a voltage between a first and second electrode disposed separately from each other in an airflow generation device, which is disposed on a rotation blade of a rotation apparatus, in which a rotation shaft of the rotation blade is held rotatably by a holding part. In the voltage application device of the embodiment, a voltage output unit outputs a voltage. Then, a sliding type transmission unit having electrodes disposed respectively on the, rotation blade side and the holding part side of the rotation shaft transmits a voltage outputted from the voltage output unit from the holding part side to the rotation blade side. Then, a transformation unit disposed on the rotation blade side increases the voltage transmitted by the sliding type transmission unit and outputs the voltage to the airflow generation device.

Abstract: A voltage application device of an embodiment applies a voltage between a first and second electrode disposed separately from each other in an airflow generation device, which is disposed on a rotation blade of a rotation apparatus, in which a rotation shaft of the rotation blade is held rotatably by a holding part. In the voltage application device of the embodiment, a voltage output unit outputs a voltage. Then, a sliding type transmission unit having electrodes disposed respectively on the rotation blade side and the holding part side of the rotation shaft transmits a voltage outputted from the voltage output unit from the holding part side to the rotation blade side. Then, a transformation unit disposed on the rotation blade side increases the voltage transmitted by the sliding type transmission unit and outputs the voltage to the airflow generation device.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having a hub 41 and blades 42, a nacelle 31 pivotally supporting the rotor 40, a tower 30 supporting the nacelle 31, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, and a discharge power supply 65 capable of applying a voltage between the electrodes of the airflow generation device 60. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system 10, torque in the rotor 40 and a rotation speed of the blades 42, and a control unit 110 controlling the discharge power supply 65 based on an output from the measurement device.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60, and a control unit 110 controlling the discharge power supply 65. The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42, and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.

Abstract: In one embodiment, an air current generating apparatus includes: a dielectric substrate exposed to gas: a first electrode disposed inside the dielectric substrate; a second electrode disposed near a surface of the dielectric so as to correspond the first electrode and having a sharp shape; and a power source applying a voltage between the first and second electrodes and plasmatizing part of the gas to generate an air current.

Abstract: In one embodiment, a wind-power generating system 10 includes: a lightning protecting device including a receptor 70 provided on a blade surface and a lightning conductor 73 grounding the receptor 70; an airflow generating device 60 provided on the blade surface and including first and second electrodes 61, 62 separated via a dielectric 63; a discharge power source 65 including switches 90, 91 able to connect the first and second electrodes 61, 62 to output terminals 84, 85 respectively and a switch 92 able to connect the first or second electrode 61, 62 to a grounding conductor 100; and a thundercloud detecting device detecting information regarding thundercloud approach. When the information regarding the thundercloud approach is detected, the second electrode 62 is connected to the grounding conductor 100 and the first and second electrodes 61, 62 are disconnected from the output terminals 84, 85.

Abstract: In one embodiment, an air current generating apparatus includes: a dielectric substrate exposed to gas: a first electrode disposed inside the dielectric substrate; a second electrode disposed near a surface of the dielectric so as to correspond the first electrode and having a sharp shape; and a power source applying a voltage between the first and second electrodes and plasmatizing part of the gas to generate an air current.

Abstract: An airflow control device 10 in an embodiment includes: a vortex shedding structure portion 20 discharging an airflow flowing on a surface in a flow direction as a vortex flow; and a first electrode 40 and a second electrode 41 disposed on a downstream side of the vortex shedding structure portion 20 via a dielectric. By applying a voltage between the first electrode 40 and the second electrode 41, flow of the airflow on the downstream side of the vortex shedding structure portion 20 is controlled.

Abstract: A voltage application device of an embodiment applies a voltage between a first and second electrode disposed separately from each other in an airflow generation device, which is disposed on a rotation blade of a rotation apparatus, in which a rotation shaft of the rotation blade is held rotatably by a holding part. In the voltage application device of the embodiment, a voltage output unit outputs a voltage. Then, a sliding type transmission unit having electrodes disposed respectively on the rotation blade side and the holding part side of the rotation shaft transmits a voltage outputted from the voltage output unit from the holding part side to the rotation blade side. Then, a transformation unit disposed on the rotation blade side increases the voltage transmitted by the sliding type transmission unit and outputs the voltage to the airflow generation device.

Abstract: In one embodiment, a wind-power generating system 10 includes: a lightning protecting device including a receptor 70 provided on a blade surface and a lightning conductor 73 grounding the receptor 70; an airflow generating device 60 provided on the blade surface and including first and second electrodes 61, 62 separated via a dielectric 63; a discharge power source 65 including switches 90, 91 able to connect the first and second electrodes 61, 62 to output terminals 84, 85 respectively and a switch 92 able to connect the first or second electrode 61, 62 to a grounding conductor 100; and a thundercloud detecting device detecting information regarding thundercloud approach. When the information regarding the thundercloud approach is detected, the second electrode 62 is connected to the grounding conductor 100 and the first and second electrodes 61, 62 are disconnected from the output terminals 84, 85.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having blades 42, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, a discharge power supply 65 applying a voltage between the electrodes of the airflow generation device 60, and a control unit 110 controlling the discharge power supply 65. The control unit 110 controls the voltage to perform pulse modulation so that the value of a relational expression fC/U is 0.1 or larger and 9 or smaller where f is a pulse modulation frequency of the voltage, C is a chord length of the blades 42, and U is a relative velocity combining a peripheral velocity of the blades 42 and a wind velocity, so as to generate plasma induced flow.

Abstract: A wind power generation system 10 of an embodiment includes a rotor 40 having a hub 41 and blades 42, a nacelle 31 pivotally supporting the rotor 40, a tower 30 supporting the nacelle 31, an airflow generation device 60 provided in a leading edge of each of the blades 42 and having a first electrode 61 and a second electrode 62 which are separated via a dielectric, and a discharge power supply 65 capable of applying a voltage between the electrodes of the airflow generation device 60. Further, the system includes a measurement device detecting information related to at least one of output in the wind power generation system 10, torque in the rotor 40 and a rotation speed of the blades 42, and a control unit 110 controlling the discharge power supply 65 based on an output from the measurement device.

Abstract: According to the present invention, there is provided a wind power generating system, having a plurality of plasma airflow generating units, each including a first electrode and a second electrode arranged being separated from the first electrode with a dielectric film and generating plasma airflow owing to dielectric barrier discharge when voltage is applied between the first electrode and the second electrode; and at least one plasma power source which supplies voltage to the plasma airflow generating units, wherein the plasma airflow generating units are arranged at a blade of the wind power generating system and are supplied with voltage as being separated into a plurality of lines separately for each of the lines.

Abstract: A metallic seat structure member with a surface roughened is placed within a forming die, into which synthetic resin is injected for molding. This provides a vehicle seat structure in which leg portions of a strength member made of synthetic resin are fixed to the roughened surface of the seat structure member.

Abstract: In one embodiment, an air current generating apparatus includes: a dielectric substrate exposed to gas: a first electrode disposed inside the dielectric substrate; a second electrode disposed near a surface of the dielectric so as to correspond the first electrode and having a sharp shape; and a power source applying a voltage between the first and second electrodes and plasmatizing part of the gas to generate an air current.

Abstract: Disclosed is a process for the simple preparation of trifluoromethionine, its analogs trifluoromethylcysteine, fluoroalkylhomocysteines, and fluoroalkylcysteines, and derivatives of them. These compounds are drug-candidate compounds or raw materials of drug-candidate compounds. Specifically, trifluoromethionine, trifluoromethylcysteine, a fluoroalkylhomocysteine, or a fluoroalkylcysteine is simply and conveniently prepared directly without passing through homocysteine or cysteine by adding metallic sodium to an optically active or racemic homocystine or cystine in liquid ammonia and further adding a fluoroalkyl iodide thereto under Birch reduction conditions.

Abstract: A microphone system including a main unit for controlling the entire system and microphones having cascade connections from the main unit assuming the main-unit side upstream and the opposite side downstream. The microphone includes communication control means for controlling data transmitted between the main unit and microphones, sound input means for converting collected sound into a digital signal, echo cancellation means for eliminating an echo component in the sound signal, and sound-information generation means for updating the sound information by adding the sound signal of the self-microphone to the sound information of the downstream microphones and upstream transmitting the up data including the updated sound information. The microphone transmits the down data transmitted from the main unit to the down-most microphone in sequence in accordance with the cascade connection and transmits the up data from the down-most microphone to the main unit in reverse sequence.