摘要:
The wireless power transmission system of this invention transmits power over a resonant magnetic field. The system includes a power-transmitting resonator 105 and a power-receiving resonator 107, at least one of which is a series resonant circuit with an inductor including spiral wiring 201 and extended wires 213, 207a, 207b and 207c. The extended wire 213 connects a point 203 of the spiral wiring 201 to a power supplying structure, while the extended wires 207a, 207b and 207c connect other points of the spiral wiring 201 to the power supplying structure. Capacitors 209a, 209b and 209c and switches 211a, 211b and 211c are connected to the extended wires 207a, 207b and 207c, respectively. The series resonant circuit has its inductance varied according to which current path has been chosen by selectively turning ON one of the switches. A wiring portion 201a of the spiral wiring 201 has a low-resistance portion 2010, of which the wiring resistance per unit length at a resonant frequency is set to be lower than in at least a part of the rest of the spiral wiring.
摘要:
An electromagnetic wave filter apparatus includes: a shield conductor; a shield aperture provided in the shield conductor; a plurality of strip conductors, each of which is connected to the shield conductor at both ends thereof, and which divide the shield conductor into a plurality of apertures; and a plurality of stub conductors provided at intervals on each of the strip conductors. Each of the stub conductors prevents a current with a predetermined frequency from flowing through a corresponding strip conductor due to an electromagnetic wave with the predetermined frequency passing through the electromagnetic wave filter apparatus. Thus, the electromagnetic wave filter apparatus passes the electromagnetic wave with the predetermined frequency without exerting a substantial influence on radiation of the electromagnetic wave with the predetermined frequency.
摘要:
An information terminal device is disclosed that performs communication via a communication network. The information terminal device includes a short-range wireless communication unit that performs short-range wireless communication with an electronic device, a storing unit that stores information about communication via the communication network while the short-range wireless communication with the electronic device is disconnected, and a control unit that causes, upon restoration of the short-range wireless communication with the electronic device, the short-range wireless communication unit to transmit to the electronic device the information about the communication via the communication network if the information about the communication via the communication network is stored in the storing unit.
摘要:
A pointing device includes a movement detector adapted to detect movement of an operating object, a pressure detector adapted to detect an operating pressure of the operating object, and a controller adapted to direct movement of a target object, wherein the controller controls the moving direction of the target object in accordance with the detected movement of the operating object and controls the moving speed of the target object in accordance with the operating pressure detected when the operating object is moving.
摘要:
An electric machine and a power supply system, in which a battery pack can be easily and safely replaced with another, and electric power can be transferred with high transfer efficiency. An electric machine of the present invention includes a driving electric motor, a battery pack for supplying electric power to the driving electric motor, and an energy transfer section for transferring electric energy output from the battery pack to the driving electric motor. The battery pack includes a first antenna for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source, at least one secondary battery charged by the electric power received by the first antenna, an oscillator for producing radio-frequency power by DC power discharged from the secondary battery, and a second antenna for generating a second resonant magnetic field by the radio-frequency power. The energy transfer section includes a third antenna that couples with the second resonant magnetic field generated by the second antenna, and transfers the radio-frequency power received by the third antenna to the driving electric motor.
摘要:
Disclosed is a cyanide-free copper-zinc alloy electroplating bath which can form a uniform and glossy plated layer having the desired composition in a large current density range, and a plating method using the same.The copper zinc alloy electroplating bath contains a copper salt, a zinc salt, an alkali metal pyrophosphate or an alkali metal tartrate, and nitrate ions. The concentration of the nitrate ions is preferably 0.001 to 0.050 mol/L. Further, the pH of the copper-zinc alloy electroplating bath is preferably in the range of 8 to 14. Furthermore, in addition to the copper salt, the zinc salt, the alkali metal pyrophosphate and the nitrate ions, at least one selected from amino acids or salts thereof is preferably included, and histidine can be used favorably as the amino acid.
摘要:
An electromagnetic wave filter apparatus includes: a shield conductor; a shield aperture provided in the shield conductor; a plurality of strip conductors, each of which is connected to the shield conductor at both ends thereof, and which divide the shield conductor into a plurality of apertures; and a plurality of stub conductors provided at intervals on each of the strip conductors. Each of the stub conductors prevents a current with a predetermined frequency from flowing through a corresponding strip conductor due to an electromagnetic wave with the predetermined frequency passing through the electromagnetic wave filter apparatus, and thus, the electromagnetic wave filter apparatus passes the electromagnetic wave with the predetermined frequency without exerting substantial influence on radiation of the electromagnetic wave with the predetermined frequency.
摘要:
There is provided a method of inducing differentiation of bone marrow stromal cells to neural cells or skeletal muscle cells by introduction of a Notch gene. Specifically, the invention provides a method of inducing differentiation of bone marrow stromal cells to neural cells or skeletal muscle cells in vitro, which method comprises introducing a Notch gene and/or a Notch signaling related gene into the cells, wherein the finally obtained differentiated cells are the result of cell division of the bone marrow stromal cells into which the Notch gene and/or Notch signaling related gene have been introduced. The invention also provides a method of inducing further differentiation of the differentiation-induced neural cells to dopaminergic neurons or acetylcholinergic neurons. The invention yet further provides a treatment method for neurodegenerative and skeletal muscle degenerative diseases which employs neural precursor cells, neural cells or skeletal muscle cells produced by the method of the invention.
摘要:
A slot antenna apparatus includes a grounding conductor having an outer edge including a first portion and a second portion, a one-end-opened slot formed in the grounding conductor along a radiation direction such that an open end is provided at a center of the first portion, a first feed line intersecting with the slot to feed radio-frequency signals, a second feed line connected to an external circuit, and a signal processing circuit including active elements and connected between the first and second feed lines and connected to the grounding conductor. The grounding conductor is configured to be symmetric about an axis parallel to the radiation direction and passing through the slot, and is provided with a grounding terminal on the axis of symmetry at the second portion. The grounding terminal is to be connected to a ground of the external circuit.