Abstract:
A device and method for measuring combustible-gas concentration and a device and method for measuring hydrocarbon-gas concentration, which exhibit low dependence on oxygen concentration variations as well as low temperature dependence. Paste is applied to the inner surface of a closed-bottom cylindrical solid electrolyte element, thereby forming a layer serving as a reference electrode. Plating with platinum is performed, so as to form a layer serving as a first detection electrode, on the outer surface of the solid electrolyte element only at a portion extending from an end portion of the solid electrolyte element to the vicinity of the interface between a heating resistor and a heating-resistor lead portion, which are formed within a heater element contained in the cylindrical solid electrolyte element. Paste which contains gold powder and 10 parts of indium oxide is applied onto the platinum-plating layer so as to form a layer serving as a second detection electrode, followed by firing. Subsequently, a diffusion layer containing spinel is formed by thermal spraying on the surface of a detection electrode. The heater element is disposed in the solid electrolyte element such that an end portion abuts an inner bottom portion of the solid electrolyte element. Lead wires for measuring internal resistance, which extend from the reference electrodes, and a lead wire extending from the detection electrode are connected to a temperature controller.
Abstract:
The present invention relates to a transparent conductive layered structure having a transparent substrate and a transparent conductive layer and transparent coating layer formed in succession on this substrate, used in, for instance, the front panel of CRT, etc., display devices. The main components of said transparent conductive layer are noble metal microparticles with a mean particle diameter of 1 to 100 nm, wherein the microparticles are made from gold and/or platinum and silver and the gold and/or platinum content is within a range exceeding 50 wt % up to 95 wt %, and a binder matrix. Moreover, the main components of the coating liquid used to form a transparent conductive layer in the production of a transparent conductive layered structure are solvent and noble metal-coated silver microparticles with a mean particle diameter of 1 to 100 nm dispersed in this solvent, wherein the surface of the silver microparticles is coated with gold or platinum only or a compound of gold and platinum and the gold and/or platinum content is within a range exceeding 50 wt % up to 95 wt %.
Abstract:
A fuel cell power generating apparatus includes a stack of a plurality of fuel cell units each having a cathode and an anode disposed on opposite sides of an electrolyte membrane. A fuel gas supply system supplies fuel gas to the anode, an air supply system supplies air to the cathode and a water supply system supplies liquid water to the cathode. A control unit ensures that, when the apparatus starts up, the cathode is first supplied with air, followed by supply of the liquid water. In a preferred embodiment, the water supply system intermittently sprays the liquid water onto the cathode when the temperature of the fuel cell stack monitored by a temperature sensor falls below a predetermined temperature.
Abstract:
A fuel cell power generating apparatus includes a stack of a plurality of fuel cell units each having a cathode and an anode disposed on opposite sides of an electrolyte membrane. A fuel gas supply system supplies fuel gas to the anode, an air supply system supplies air to the cathode and a water supply system supplies liquid water to the cathode. A control unit ensures that, when the apparatus starts up, the cathode is first supplied with air, followed by supply of the liquid water. In a preferred embodiment, the water supply system intermittently sprays the liquid water onto the cathode when the temperature of the fuel cell stack monitored by a temperature sensor falls below a predetermined temperature.
Abstract:
A drive circuit supplies a FB feedback signal having a predetermined frequency to drive electrodes to vibrate a vibrator. An angular velocity detecting circuit detects a vibratory movement caused in a direction normal to an oscillating direction of the vibrator based on a sensing signal of angular velocity sensing electrodes, thereby generating an angular velocity signal. A signal input circuit supplies a diagnostic signal having a frequency different from that of the FB signal, which is entered into the vibrator via diagnosing electrodes. A diagnosis circuit generates a breakdown signal based on a signal responsive to the diagnostic signal which is obtained from at least one of the drive electrodes and the angular velocity sensing electrodes.
Abstract:
A hydrogenation catalyst for the production of hydrogen peroxide by the hydrogenation of anthraquinones in accordance with a hydrogen peroxide production process utilizing an anthraquinone method. The catalyst includes palladium supported on a carrier. The carrier comprises spherical silica particles, wherein at least 90 wt % of the silica particles have particle diameters of 10 to 100 .mu.m. The silica particles have an average particle diameter of 30 to 60 .mu.m and a pore volume of 0.4 to 1.0 ml/g. The catalyst has desirable activity, strength, service life and selectivity.
Abstract:
A semiconductor acceleration sensor comprises a base having a first surface for receiving an acceleration force and a second surface disposed generally perpendicular to the first surface. A first detector is disposed on the second surface of the base for detecting an acceleration force in a horizontal direction of the base. A second detector is disposed on the second surface of the base for detecting an acceleration force in a vertical direction of the base. A support member is connected to one end of the base for supporting and fixing the base.
Abstract:
A fuel tank device has a canister suitably mounted inside a fuel tank. The fuel tank device includes a tank body in which fuel is stored, a filler tube connected at one end to the tank body for supplying the fuel into the tank body, and a canister hung and supported by the edge of an opening formed through the tank body via a support member and a sealing member, for adsorbing and storing evaporative fuel generated in the tank body. The canister is mounted entirely within the tank body and located so as not to be directly exposed to the fuel when the fuel is being supplied from the filler tube.
Abstract:
A power unit comprises an input mechanism for inputting kinetic energy as a rotary motion, a storing mechanism connected to the input mechanism for storing the kinetic energy as rotary motion, a first speed-regulating mechanism connected to the storing mechanism for increasing the speed of the rotary motion released from the storing mechanism, and a second speed-regulating mechanism connected to the first speed-regulating mechanism for braking the rotary motion to regulate the speed of the rotary motion. A converting mechanism is connected to the first speed-regulating mechanism for converting the rotary motion whose speed has been increased into electricity. A control circuit is connected to the converting mechanism for controlling the generated electricity, and a positive electrode output terminal and a ground electrode terminal are connected to the control circuit.
Abstract:
A chip component supply apparatus of the invention includes a container box for storing chip components in pieces, a means for conveying chip components from the container box onto a conveyor belt, which moves intermittently and conveys the transferred chip components toward a take-out port area where a vacuum suction nozzle of an electronic component placement machine takes out the chip components. A stopper is positioned in the vicinity of the take-out port area for stopping the chip components conveyed by the conveyor belt at the take-out port area. The stopper moves and departs from the vicinity of the take-out port area when the conveyor belt finishes intermittent motion and stops, and returns and is positioned at the take-out port area before the next chip component conveyed by next intermittent motion of the conveyor belt reaches the take-out port area. The vacuum suction nozzle of the electronic component placement machine takes out the chip component at the take-out port area when the conveyor belt is stopped and the stopper is apart from the take-out port area.