摘要:
A fuel cell in which the sealed portions formed at the peripheral edges of gas flow passages of a gas separating plate are turned so that they have a U-shaped cross section in the direction of the lamination so as to provide for elasticity. A filling member is filled in the interior of the sealed portions. This gas separating plate is used to respectively form gas flow passages through which different gas fluids are caused to flow so that they are electrochemically reacted in a pair of electrode reacting portions disposed with an electrolyte layer being interposed therebetween. In consequence, the sealed portions provided at the peripheral edges of the gas flow passages deform in accordance with the creep caused in the electrode reacting portions. This enables a balanced, adequate bearing pressure to be kept applied to the electrode reacting portions and the sealed portions, thereby enabling the fuel cell to be operated in an excellent gas sealed state for a long time.
摘要:
A dielectric resonator microwave oscillator in which the gate of a FET is connected to a resonance circuit. An inductor is connected to the drain of the FET, and the output is taken from the source of the FET. This dielectric resonator microwave oscillator has enhanced negative resistance and positively starts the oscillation even when there is a low reflection coefficient of the resonance circuit. Using a circuit which consists of a capacitor and inductor between the source and the output terminal, a further increasing of negative resistance at the gate of the FET is obtained.
摘要:
A computerized automated demand-based parts delivery management system and method is disclosed. Parts for use in a production facility are received at a warehouse and housed in storage inventory areas such as trailers parked in a yard. Data about the parts in storage inventory areas and their locations as well as an inventory of parts in the warehouse are stored in a database. A “demand pegging” operation is performed by viewing current delivery inventory levels within the warehouse and applying them to production demand data to determine when parts will be depleted from delivery inventory areas. The operation further identifies storage inventory areas that have the needed parts. Process times for transporting parts between locations are considered in determining task times for transporting parts from storage inventory areas to delivery inventory areas so parts are replenished in advance of the deplete time determined by the demand pegging operation.
摘要:
A parts delivery management system and method that synchronizes production line side parts deliveries with a production schedule to facilitate delivering the right part to the right production line location at the right time. A consolidation center for receiving parts from suppliers is co-located with an assembly plant. Parts are received in returnable containers and organized for line side delivery according to the manufacturer's production schedule. Parts are delivered to production line locations using multi-cart “trains” that transport parts to the locations. Trains made of multiple carts are assembled throughout the production day and loaded with containers holding the parts that are then delivered line side. A delivery management system application executing on a computer receives production schedule data as well as part and container data to determine which parts are needed throughout the day at the various production line side locations and when they are needed.
摘要:
A semiconductor module includes: a semiconductor element (13) having a working unit (11) and a guard ring unit (12); and heat radiation members (15, 14) arranged on an upper surface and a lower surface of the semiconductor element for cooling the semiconductor element. A passivation film (20) covers the guard ring but does not cover the working unit. The upper heat radiation member (15) is made of a flat metal plate connected to the working unit without contact with the passivation film. The upper heat radiation member is connected to the lower heat radiation member (14) in the thermo-conducting way.
摘要:
An electrostatic recording head comprises an insulating substrate having a builtup structure thereon. The builtup structure includes, in the following order, a plurality of dielectric electrode strips having portions which are arranged in parallel to and kept away from one another, a first insulating layer, a plurality of discharge electrode strips each extending to intersect with the respective portions of the dielectric electrode strips, a second insulating layer having a plurality of openings to form part of an ion generating space region at individual intersected portions of said discharge electrode strips and said dielectric electrode strips, and a screen electrode which is provided to complete each ion generating space region in association with the second insulating layer and has a plurality of openings, through which ions are passed, corresponding to the respective ion generating space regions. The screen electrode is made of a member which is selected from the group consisting of metals, noble metals and alloys mainly composed of these metals and which has a melting point not lower than 1500.degree. C. Alternatively, the screen electrode may be made of a core member and a surface layer which is made of the above metal member, or an oxidation-resistant material such as an inorganic compound, a polymer or a metal alkoxide polymer.
摘要:
A feedback type microwave oscillator using a three-terminal active element employs both series feedback and parallel feedback and capacitance in its output circuit, thereby increasing the small signal negative resistance, and the output power and its resistance to impedance fluctuations of a load attached thereto.
摘要:
In a waveguide-to-microstrip line coupling arrangement, a microstrip line is placed on an outer surface of a wall of a waveguide which is coupled with the microstrip line via a metallic post connected at its one end to a center strip conductor of the microstrip line and is inserted inside the waveguide via through-holes made in a ground plane of the microstrip line and in the wall of the waveguide where the diameter of the through-hole made in the ground plane is made smaller than that of the through-hole made in the wall of the waveguide. The waveguide has a short-circuited end and the metallic post is placed close to the short-circuited end. The coupling arrangement may be used in a microwave frequency converter having an microwave integrated circuit including a local oscillator and a mixer, where the MIC is located on an outer surface of a longitudinal wall extending from a short-circuited end to an open end.
摘要:
Provided is technology which can prevent the circumferential section of the end surface of a tip end opening from being damaged when an intraocular lens is extruded from an insertion apparatus, even when an insertion tube of the intraocular lens insertion apparatus has been further reduced in size. Provided is an intraocular lens insertion apparatus in which the end surface of a tip end opening (10j) in a tip end section (10a) of an insertion tube is an inclined surface that is inclined with respect to a surface (M) perpendicular to a central axis (L) of the insertion tube, and also the angle of inclination, with respect to the surface (M) perpendicular to the central axis (L) of the insertion tube, of the end surface of the tip end opening is larger toward a base end section (101) than toward a tip end section (100), wherein a predetermined region of the circumferential section toward the base end section (101) of the end surface of the tip end opening (10j) has a curved shape that protrudes toward the outside, and has a radius of curvature (R4) that is equal to or less than the radius of curvature of another region of the circumferential section.
摘要:
Provided is technology which can prevent the circumferential section of the end surface of a tip end opening from being damaged when an intraocular lens is extruded from an insertion apparatus, even when an insertion tube of the intraocular lens insertion apparatus has been further reduced in size. Provided is an intraocular lens insertion apparatus in which the end surface of a tip end opening (10j) in a tip end section (10a) of an insertion tube is an inclined surface that is inclined with respect to a surface (M) perpendicular to a central axis (L) of the insertion tube, and also the angle of inclination, with respect to the surface (M) perpendicular to the central axis (L) of the insertion tube, of the end surface of the tip end opening is larger toward a base end section (101) than toward a tip end section (100), wherein a predetermined region of the circumferential section toward the base end section (101) of the end surface of the tip end opening (10j) has a curved shape that protrudes toward the outside, and has a radius of curvature (R4) that is equal to or less than the radius of curvature of another region of the circumferential section.