Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760 Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectric glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.

Abstract: An electron emission cathode includes: an n-type semiconductor film including diamond particles partially projecting from a surface of the n-type semiconductor film; and an anode opposing the n-type semiconductor film with a vacuum interposed therebetween. Electrons are emitted by applying a voltage between the anode and the n-type semiconductor film.

Abstract: An electron emission cathode includes: an n-type semiconductor film including diamond particles partially projecting from a surface of the n-type semiconductor film; and an anode opposing the n-type semiconductor film with a vacuum interposed therebetween. Electrons are emitted by applying a voltage between the anode and the n-type semiconductor film.

Abstract: The first object of the present invention is to provide a PDP with improved panel brightness which is achieved by improving the efficiency in conversion from discharge energy to visible rays. The second object of the present invention is to provide a PDP with improved panel life which is achieved by improving the protecting layer protecting the dielectrics glass layer. To achieve the first object, the present invention sets the amount of xenon in the discharge gas to the range of 10% by volume to less than 100% by volume, and sets the charging pressure for the discharge gas to the range of 500 to 760Torr which is higher than conventional charging pressures. With such construction, the panel brightness increases. Also, to achieve the second object, the present invention has, on the surface of the dielectrics glass layer, a protecting layer consisting of an alkaline earth oxide with (100)-face or (110)-face orientation.

Abstract: A beam emitted from a light source including the characteristic wavelength of flown particles in a film forming system is interrupted by a beam chopper in a predetermined cycle, and is then divided into a probing beam and a reference beam by a beam divider. The probing beam passes through a particle flight area and is then injected into a photo detector through an optical filter, and a probing signal is outputted. A reference signal is obtained from the reference beam in the same manner. A data processor detects the phase and level of both signals, so that an absorbance, i.e., a film forming rate for the flown particles is estimated. The film forming rate is integrated with time so that a film thickness is estimated. Thus, the range of the applicable film forming rate is wide.

Abstract: A multi-layered conjugated acrylic fiber comprises different acrylic polymers which are conjugated along the fiber axis in layers. On the average the fiber contains more than two layers of acrylic polymers. The shrinkage forming ratio in boiling water of the conjugated acrylic fiber is 7-15% and the shrinkage forming stress is 5-20 mg/denier. To make the acrylic fiber water absorbent, one or more of the acrylic polymers may contain 0.3 to 2.0 mmole/g of carboxylic acid groups. The fibers may be made by introducing the polymers into a static mixer in such a way as to retain a number of separate layers of the polymers, and thence to a spinneret through a filter having a maximum mesh space of 10 or more. After spinning out the dope, it is drawn, washed and dried. Except where water-absorbent fiber is wanted, this is followed by shrinkage forming treatment and redrawing; the water-absorbent fiber is treated with alkali solution either in the form of yarn, or a fabric made therfrom.

Abstract: A plurality of eccentric rotors are rotatably fitted between a fixed base and an output shaft on which an object to be vibrationproofed is mounted, the output shaft being supported movably in 3 to 6 Degree-of-Freedom, magnet spring mechanisms are provided on fitted wall surfaces between the fixed base and the eccentric rotor, a composite vibrationproof adjusting spring is provided between the fixed base and the output shaft, the magnet spring mechanism responding to a fine displacement of the output shaft, and in a case where the output shaft is greatly displaced, the output shaft is braked so as to be restored to a predetermined position by the composite vibrationproof adjusting spring mechanism. The magnet spring mechanism produces a large braking force since a rotational angle is large and a rotational-angle speed is high due to eccentricity of eccentric rotors.

Abstract: A high-tenacity water-soluble polyvinyl alcohol fiber comprising a fiber composed of a polyvinyl alcohol polymer with a degree of polymerization of at least 1500 and a degree of saponification of 80 to 99 mol % and having a tensile strength of at least 10 g/d, an initial modulus of at least 100 g/d, and a water soluble temperature of 100.degree. C. or below, and a process of producing the fiber.

Abstract: A piezo-resonator comprises a supporting frame having a recess for attaching a piezoelectric resonator element. This recess consists of three portions, that is, a central portion, a pair of connecting portions which are outside of the central portion and a pair of end portions which are outside of the pair of connecting portions. The width W.sub.2 of the connecting portion, the width W.sub.1 of the central portion and the width W.sub.3 of the end portion have the relationship W.sub.2 >W.sub.1 >W.sub.3. Two terminals intersect respective connecting portions to be embedded in the supporting frame.

Abstract: High tenacity acrylonitrile fibers are provided.The high tenacity acrylonitrile fibers comprise acrylonitrile polymers composed mainly of acrylonitrile having an intrinsic viscosity of at least 2.5 to 3.5 and having a degree of crystalline orientation measured by wide-angle X-ray diffraction within a range of 93-97%, a tensile strength of at least 10 g/d, an initial modulus of at least 180 g/d, a knot strength of 2.2 g/d and a surface smoothness.A process for production of the high tenacity acrylonitrile fiber which comprises once extruding an acrylonitrile polymer solution having an intrinsic viscosity of 2.5 to 3.5 in air or in an inert gas through a spinning nozzle, then introducing into a coagulating bath, subjecting the resulting coagulated filaments to washing with water, drawing and drying, and then drawing the filaments under a drawing tension of about 1.0 to 2.5 g/d with dry heating at about 160.degree. to about 250.degree. C.

Abstract: Disclosed is a heat exchanger arranged such that a plurality of groups of cuttouts are formed on the surfaces of flat fins as between vertically adjacent heat transfer tubes by providing a plurality of cutouts, including two openings extending transverse to the direction of the air flow and two legs nonparallel with said direction of the air flow, on the front and reverse sides of the flat fins. This arrangement remarkably reduces the heat resistance between the air and the fin surfaces. Since the plurality of cutouts or the plurality of groups of cutouts are formed in the identical configuration, maintenance of a mold can be facilitated.

Abstract: Disclosed is a heat exchanger having a plurality of flat fins disposed in parallel at predetermined intervals and adapted such that the air flows therebetween and a plurality of heat-transfer tubes disposed to intersect at right angles with the plurality of fins and adapted such that a fluid flows therethrough. The heat-transfer tubes are arranged such that a line connecting the adjacent heat-transfer tubes in the longitudinal direction of the fin is perpendicular to the direction of the air flow. The projection area in the direction of the air flow of any of the heat-transfer tubes located on the upstream side with respect to the air flow partially overlaps the position of at least one of the heat-transfer tubes disposed on the downstream side thereof. The pitch of adjacent heat-transfer tubes is smaller in the direction perpendicular to the air flow than in the direction of the air flow. Such an arrangement excells in both the frosting characteristics and performance.

Abstract: An ultra-high-tenacity multifilament fiber of polyvinyl alcohol having a degree of polymerization of at least 1500, said filament having a tensile strength of at least 12 g/d and an initial modulus greater than 280 g/d, which is produced by a process for producing an ultra-high-tenacity polyvinyl alcohol fiber which comprises the steps of dissolving polyvinyl alcohol having a degree of polymerization of at least 1500 in a solvent, dry-spinning the resulting polymer solution through a spinneret into an environment of air or inert gas, introducing the dry-spun filaments into a coagulating bath, and drawing the coagulated filaments at a total effective draw ratio of at least 20 times.

Abstract: A heat exchanger is provided in an air conditioner, refrigerator or the like, and is provided for the indirect transmission and reception of heat between fluids. The heat exchanger comprises a plurality of flat plate fins which are arranged parallel to one another at predetermined intervals so as to allow air stream to flow therebetween, and a plurality of heat transfer tubes passing through the flat plate fins for allowing a fluid to flow therethrough. Each fin is provided with a number of groups of air vents arranged to cross the wake side of the air stream. Each of the air vents is defined by a slat having four sides in which two sides, facing the air stream, are opened and other two sides are provided with leg portions for connecting the slat with the fin. The leg portions are aligned with each other and are inclined with respect to the normal line of the leading edge of the fin.

Abstract: An ultra-high-tenacity multifilament fiber of polyvinyl alcohol having a degree of polymerization of at least 1500, said filament having a tensile strength of at least 12 g/d and an initial modulus greater than 280 g/d, which is produced by a process for producing an ultra-high-tenacity polyvinyl alcohol fiber which comprises the steps of dissolving polyvinyl alcohol having a degree of polymerization of at least 1500 in a solvent, dry-spinning the resulting polymer solution through a spinneret into an environment of air or inert gas, introducing the dry-spun filaments into a coagulating bath, and drawing the coagulated filaments at a total effective draw ratio of at least 20 times.

Abstract: An absorption type heat pump device including a generator for generating refrigerant vapor, a condenser, an evaporator, an expansion valve, an absorber, a solution pump, a passage member for leading strong solution from the generator to the absorber, and a heat exchanger. The heat exchanger and/or the passage member is provided with a portion in which a pressure drop is made larger than a drop in equilibrium pressure resulting from a temperature drop so as to perform flow control of the strong solution.

Abstract: The present invention relates to an acrylic fiber having excellent water absorbency. The fiber has a porous core and a relatively dense skin structure. It is a blended polymer which comprises an acrylic polymer copolymerized with a synthetic polymer which is miscible but substantially incompatible therewith, and is soluble in a solvent for the acrylic polymer but is insoluble in water.

Abstract: The present invention relates to an improvement of a solar refrigeration system. The solar refrigeration system has been improved by combining a solar collector-generator and a heat exchanger into one unit to increase the performance efficiency of the system by eliminating heat losses. The solar collector-generator comprises a tube and header arrangement including a plurality of double-walled tubes, each consisting of an outer pipe and an inner pipe, the inner pipe defining a passage for a high temperature refrigerant-lean or weak solution, whereas, the outer and inner tubes defining therebetween a passage for a low temperature refrigerant-rich or strong solution.

Abstract: A system to accomplish both air cooling and air heating of indoor space by utilizing solar energy. In principle the disclosed system is an absorption refrigeration system, wherein a solution of an evaporable refrigerant in a less evaporable solvent is passed through a solar collector-generator, but the system has additional fluid passages with the provision of changeover valves arranged so as to pass the refrigerant in heated and vaporized state from the collector-generator to an indoor heat exchanger, bypassing the condenser of the refrigerator, thereby to accomplish air heating and return the refrigerant in liquid state from the heat exchanger to the collector-generator, bypassing the absorber of the refrigerator.

Abstract: An antistatic acrylic fiber having an electrical resistivity of about 10.sup.8 .OMEGA. centimeters or less. The fiber comprises (A) an acrylonitrile homopolymer or copolymer and (B) an antistatic polymer comprising a plurality of polyether segments disposed in said polymer (A), and wherein electrically conductive carbon black is dispersed in antistatic polymer (B). Preferably antistatic polymer (B) extends in the form of long and slender stripes in the polymer (A).