Abstract: Disclosed herein is an engine noise control device for use in automobiles or the like comprising a noise control member which is attached to an opening of an engine room of an automobile or the like. The noise control member has a plurality of hollow conduit passages penetrating from one of surfaces to the other surface thereof. The hollow conduit passages are so arranged that the length of the conduit passages becomes shorter from the central portion to the peripheral portion of the noise control member. Thereby, a noise-propagating direction is changed by controlling the noise to reduce the energy of sounds radiated and/or diffracted to the outside.

Abstract: Glaze compositions for ceramic substrates such as an alumina substrate are described. In a first embodiment, the glaze composition consists of 55 to 75 mol % SiO.sub.2, 1 to 15 mol % Al.sub.2 O.sub.3, 3 to 20 mol % CaO, 1 to 13 mol % BaO and 0.1 to 5 mol % Y.sub.2 O.sub.3. In a second embodiment, the glaze composition consists essentially of 55 to 75 mol % SiO.sub.2, 1 to 15 mol % Al.sub.2 O.sub.3, 3 to 20 mol % CaO, 1 to 13 mol % BaO, 1 to 5 mol % Y.sub.2 O.sub.3, 25 mol % or less SrO, 7 mol % or less B.sub.2 O.sub.3, 2 mol % or less ZnO and 2 mol % or less MgO. In a third embodiment, the glaze composition consists essentially of 58 to 75 mol % SiO.sub.2, 2 to 15 mol % Al.sub.2 O.sub.3, 0.5 to 5 mol % La.sub.2 O.sub.3, 2 to 20 mol % CaO and 1 to 13 mol % BaO. In a fourth embodiment, the glaze composition consists essentially of 58 to 75 mol % SiO.sub.2, 2 to 15 mol % Al.sub.2 O.sub.3, 0.5 to 5 mol % La.sub.2 O.sub.

Abstract: The process for preparing a thermally shrinkable multilayer film composed of a polyamide resin layer as one surface layer and a sealant material layer as the other surface layer includes the step of causing the polyamide resin layer of the oriented laminate film to absorb water in the amount of 7.0% by weight or more before or during the thermal treatment. The laminate film is then dried so as to cause the polyamide resin layer to make the water content in the range form 2.5% by weight to 6.5% by weight while maintaining the oriented laminate film at temperatures of 90.degree. C. or lower after or during the thermal treatment. The thermally shrinkable multilayer film thus prepared is suitable for thermally shrinking packing foods such as roast meat or fresh cut meat.

Abstract: Disclosed herein is a sound wave control device which is shaped in a lens form or a prism form from an acoustically rigid porous material, wherein numerous paths having different path lengths are provided and the apparent medium density is varied. This second wave control device is used to improve the sound quality and the directivity of the sound waves from a speaker and the directional control of noises.

Abstract: An apparatus for exposing the fibrous reinforcements of a fiber reinforced resin body comprises at least one stage in which a portion of the resin body is brought into contact with a heated resin removing liquid while the resin body is vibrated. According to this apparatus subsequent processing of the resin body, e.g., connecting to another similarly treated resin body, can be advantageously conducted by utilizing the exposed fibrous reinforcement.

Abstract: A heat-shrinkable, composite packaging film comprising (a) a core layer of saponified ethylene-vinyl acetate copolymer; (b) a first polymeric outer wall bonded to one side of the core layer; and (c) a second, heat-sealable polymeric outer wall bonded to the other side of the core layer; said first and second outer walls each having a permeability to hot water having a temperature of 90.degree. C. of less than 600 g/m.sup.2 /hour. The film is suitable for packaging meat and other food products subjected to sterilization and heat-shrinking process in a hot water bath.

Abstract: A high-density analog integrated circuit having built-in resistor elements formed simultaneously with the formation of the base of transistor is disclosed in which a high-resistance element is formed of an ion-implanted resistor, a low-resistance element is formed of a base-diffused resistor, and a pair of high-resistance elements are connected in such a manner that a difference between a signal current flowing through one of the high-resistance elements and another signal current flowing through the other high-resistance element is outputted, and in which an ion-implanted resistor having a high resistance and a thin film capacitor having a small capacitance make up a built-in time constant circuit, which makes it possible to integrate on one semiconductor chip circuits such as a filter circuit for video signal and an input bias circuit.

Abstract: A method of producing biaxially oriented tubular polyetheretherketone films having good optical and mechanical properties and heat resistance, by rapidly quenching at a rate of at least 24.degree. C. per second an unoriented tubular polyetheretherketone film as melt-extruded through a circular die thereby imparting a crystallinity of not greater than 10% to the film, and continuously introducing the thus produced film into the space between a feed nip roll pair and a pull nip roll pair while reheating the film externally to a temperature of 60.degree.-140.degree. C. and allowing the film to expand under the influence of the internal pressure to an areal draw ratio of 4-36, to thereby attain biaxial orientation.

Abstract: An artificial joint for joining two bones comprises first and second members each including a shank portion for attachment to one of the bones and a mating member adapted to contact the mating member of the other member to enable smooth rotation through a predetermined angle in only two directions.

Abstract: A substrate for supporting an integrated circuit made of a ceramic member with a thin film of conductive metal applied to the ceramic member. The ceramic member consists essentially of a sintered ceramic material capable of forming a surface finish upon sintering, having a roughness that is less than 10 times the thickness dimension of the conductive film applied thereto. The ceramic material is either crystalline glass or a glass-coated ceramic.

Abstract: A glazed ceramic base is disclosed comprising a ceramic base having provided and calcined thereon a glaze composition comprising from 56 to 71 mol % SiO.sub.2, 15.5 to 28 mol % BaO, and 6 to 16 mol % Al.sub.2 O.sub.3 as necessary ingredients, and one or more members of up to 10 mol % SrO, up to 8 mol % B.sub.2 O.sub.3, up to 10 mol % CaO, and up to 3 mol % MgO as a first group of auxiliary ingredients, with the combined content of the first group of auxiliary ingredients being not more than 10 mol % of the total content. This glaze composition may comprise a second group of auxiliary ingredients.

Abstract: A process for producing a ceramic body suitable for surgical implantation that has high strength and toughness and good compatibility with bone material. A porous material is provided by semi-sintering a ceramic compact. The pores in the surface of the porous material are filled with a first powder of either tricalcium phosphate or apatite or both, or with a material of the fine powder and a powder of a material substantially the same as the material of the ceramic compact. The porous material is then fired at the sintering temperature of the ceramic compact. Following sintering, the surface of the porous material is coated with a fine apatite powder or a finally pulverized mixture of apatite and a calcium phosphate base frit. The resulting assembly is then fired at a temperature up to about 1,350.degree. C.

Abstract: A bias voltage setting circuit for a main charge coupled device is disclosed in which first and second auxiliary charge coupled devices are formed on a semiconductor substrate together with the main charge coupled device, a reference voltage is generated by the first auxiliary charge coupled device, the output voltage of the second auxiliary charge coupled device is compared with the reference voltage by means of a comparator, the bias voltage applied to the second auxiliary charge coupled device is automatically changed by a feedback circuit so that the output voltage of the second auxiliary charge coupled device is approximately equal to the reference voltage, and the bias voltage applied to the second auxiliary charge coupled device is also used as the bias voltage applied to the main charge coupled device.

Abstract: A sound insulating apparatus. Heretofore, the sound insulating apparatus to be installed in a ventilator, etc. of an architecture requires a long duct, and becomes large in its size and heavy in its weight, and is not sufficient in its sound absorbing performance.The sound insulating apparatus according to the present invention comprises a closed container including a first opening and a second opening, and having a sound absorbing member at its internal surface. The first opening is provided with a sound converging means for converging a sound wave coming into the closed container through the first opening to a predetermined place within the closed container. The second opening is formed in a place away from the predetermined place.

Abstract: A method of providing a conductor pipe to an opening portion of a well such as an oil well, gas well, geothermal power well or the like. A bore is formed in the ground with a casing tube and an auger screw, inserted into the casing tube, to a predetermined depth, after which the auger screw is withdrawn from the casing tube. Then, the conductor pipe is inserted and concentrically positioned in the casing tube, placed in the bore, to form an annular space between them, to which space a solidifiable filler is supplied from the bottom portion of the space to the upper portion thereof. The casing tube is thereafter withdrawn from the bore and then the filler is solidified to thereby fix the conductor pipe to the opening portion of the well.

Abstract: A glass-ceramic product is disclosed. The glass product is produced by combining 0.1 to 6 wt % of a compound selected from the group consisting of B.sub.2 O.sub.3 and P.sub.2 O.sub.5 with a mixture. The mixture includes 54 to 63 wt % SiO.sub.2, 20 to 28 wt % Al.sub.2 O.sub.3, 10 to 18 wt % MgO and 2 to 6 wt % ZnO. From the combined compound and mixture are formed a glassy material and then glassy material is ground in order to form a frit. The frit is then molded and the molded frit is fired into a crystalline form. The resulting glass-ceramic product has a low permittivity as compared with alumina and low power factor tan .delta.. Further, the product has a coefficient of thermal expansion which is comparable with the value for silicon semiconductor chips. The product also has other desirable characteristics such as its firing and crystallizing temperature, moisture absorption and mechanical strength.

Abstract: The method of bonding silver-based contact is disclosed. A silver-based contact is brought into contact with a support, at least the surface of which is made of a cupreous material, with a pressure of less than 1 kgf/cm.sup.2 exerted therebetween. The contact and support are heated in a non-oxidizing atmosphere at a temperature of more than 700.degree. C.

Abstract: A dental implant for the attachment of a artificial tooth is described. This dental implant comprises a root portion to be embedded in bone and a top portion to be projected in the mouth, wherein the root portion comprises a high strength metal substrate, a ceramic or glass coating layer on the substrate, and a calcium phosphate coating layer on the ceramic or glass coating layer. The dental implant can be secured to a jaw bone and overcomes the problems involved in using conventional art dental implants, e.g., adverse influences of stainless steel.

Abstract: A time-constant circuit suitable for being fabricated into an integrated circuit comprising a resistive element with its one end connected to a first input terminal, an impedance converting circuit with its input connected to another end of said resistive element and its output connected to an output terminal, a variable gain differential amplifier with its one input connected to the output of said impedance converting circuit and its another input connected to a second input terminal, an adder circuit for adding an output from said amplifier and an input signal appearing on said second input terminal, and a capacitive element connected between the junction of said resistive element and said impedance converting circuit and the output of said adder circuit. A plurality of the time-constant circuits are combined to construct a filter circuit.

Abstract: A non-linear emphasis circuit comprising a high-pass filter receiving an input signal, a compressor processing the output of the filter with such a variable gain as to decrease or increase responsive to an increase or a decrease of the output of the filter and an adder for adding the input signal and the output of the compressor at a predetermined rate for producing a non-linearly emphasized signal. The circuit has a structure adapted for production in an IC form and easy to design.