摘要:
A method and system for surely and conveniently generating plasma in a narrow tube having a small diameter.A first electrode formed by a conductive member covered with an insulator or dielectric is inserted into a narrow tube. The narrow tube is located on a second electrode. A power supply applies an alternating voltage or pulse voltage between the first electrode and the second electrode so that plasma is generated in the narrow tube around the first electrode.
摘要:
The invention concerns a precious, semi-precious or mineral cut stone, comprising a crown (1) including in its center a planar table (2) surrounded with several facets of the crown (3-5), a pavilion (6) comprising a pointed culet (8) and several pavilion facets (9-12 and 17), and between the crown (1) and the pavilion (6), a girdle (7). The invention is characterized in that said pavilion facets comprise at least one top facet (9-12) extending between said pointed culet (8) and an intermediate location (13-16) between the girdle (7) and the culet (8).
摘要:
An optical apparatus is disclosed in which a press contact force for bringing a vibrator and a contact member into press contact with each other is generated between them, and thereby the reaction force of the press contact force is difficult to transmit outward. The optical apparatus comprises a lens holding member which holds a lens, and a vibration type linear actuator which drives the lens holding member in an optical axis direction. The vibration type linear actuator includes a vibrator on which vibration is produced through an electromechanical energy conversion action and a contact member which is in press contact with the vibrator. The vibrator and the contact member is in press contact with each other by a magnetic force acting between them.
摘要:
A vaporizing device for chemical vapor deposition (CVD) source materials includes a vaporizer for vaporizing introduced CVD source materials by heating, a spray nozzle of which an end portion is fixedly attached to the vaporizer for spraying the CVD source materials into the vaporizer, a cooling mechanism for cooling the spray nozzle, and a heat conduction restrictor attached to the end portion, proximate of the end portion, or to the vaporizer. Generation of non-vaporized residues and particles is decreased, improving productivity owing to prolongation of continuous operation time of the apparatus and a decrease in film defects.
摘要:
A thermoelectric piece has an increased adhesive strength between a semiconductor matrix of Bi--Sb--Te or Bi--Te--Se and a diffusion barrier layer deposited thereon for blocking diffusion of a soldering material into the semiconductor matrix. An Sn-alloy layer is provided between the semiconductor matrix and the diffusion barrier layer of Mo, W, Nb and Ni to give the enhanced adhesive strength. The Sn-alloy is formed at the interface with the semiconductor matrix by interdiffusion of Sn with at least one element of the semiconductor. It is found that Sn will not lower the thermoelectric characteristics when diffusing into the semiconductor matrix and provides an sufficient adhesive strength to the metal elements of the diffusion barrier layer. The thermoelectric piece is made through the steps of:a) preparing the thermoelectric semiconductor having opposed faces;b) depositing a tin layer on each of the opposed faces of the thermoelectric semiconductor;c) diffusing Sn mutually with at least one element of the thermoelectric semiconductor to form the Sn-alloy layer on the each of the opposed faces;d) depositing a diffusion barrier layer of Mo, W, Nb, or Ni on each of the Sn-alloy layer.
摘要:
A keyboard of a notebook type computer that is small in size yet has a smooth key-in operation. The keyboard includes a plurality of keys including English letter key, with each of the keys having keytops arranged in transverse lines and vertical rows in a matrix manner, with a small gap between every two adjacent keytops. An arrangement of the keytops of the English letter keys is such that a pitch in a transverse direction is larger than that in a vertical direction, and a size of an upper surface of the keytop of the English letter key is such that a length in the transverse direction is larger than a length in the vertical direction.
摘要:
A key switch is provided which includes a key top which is pressed down by optional force and which can move in the press-down direction. The key switch also includes a spring for generating a rebound according to the optional force applied to the key top. The key switch also includes a housing having an elastic member which generates the press-down force against the rebound according to a distance by which the key top moves. The key switch realizes the press-down characteristics in which the inclination of the rebound is zero or negative.
摘要:
A circuit board comprising a core material made from magnesium, a magnesium alloy, or a magnesium-based composite material, and an electric circuit formed on the core material. A process for producing the circuit board comprises the steps of (1) forming an electrodeposition-painted coating on such a core material, (2) forming a polyimide resin coating on the electrodeposition-painted coating, (3) forming a via hole extending through the resin coating to the underlying electrodeposition-painted coating, (4) etching and removing the electrodeposition-painted coating in the region exposed in the bottom of the via hole while masking the other region with the resin coating thereby extending the via hole to the core material, (5) forming a metal film on at least a free surface of the resin coating and an inner surface of the extended via hole, and (6) etching the metal film by using a photoresist mask to form a conductor layer having a predetermined pattern.
摘要:
A silver halide color photographic light-sensitive material which provides a good color developability and an excellent color reproducibility in every hue comprises at least a cyan dye-forming emulsion layer, a magenta dye-forming emulsion layer and a yellow dye-forming emulsion layer, wherein the cyan dye-forming emulsion layer contains at least one cyan dye-forming coupler represented by the following Formula (I) or (II) and the yellow dye-forming emulsion layer contains at least one yellow dye-forming coupler represented by the following Formula (III) or (IV): ##STR1## to form a homopolymer or a copolymer; ##STR2## wherein X.sub.3 represents ##STR3## with the substituents as defined herein the specification.
摘要:
A magnesium-based composite material having improved mechanical strength, and in particular an improved modulus of elasticity, and a relatively low density. The material is provided by pressing and sintering a mixture of magnesium or magnesium-based alloy particles or a particulate combination of magnesium particles and particles of one or more additional metals, with a reinforcement additive of boron, or boron-coated B.sub.4 C, Si.sub.3 N.sub.4, SiC, Al.sub.2 O.sub.3 or MgO particles.