Abstract: A permanent magnet 24 is stood vertically at a position shifted on way off the central position of a central piece 20c for a U-shaped iron core 20. An armature 50 has a projection 54 as a fulcrum at an off-centered position so that the fulcrum is placed on an upper end face of the permanent magnet 24. Also, a coil 41 is wounded around a pole piece 20b of the iron core 20 on a near side to the central position.

Abstract: The method according to the present invention enables to suppress damaging the reaction tubes and the wafer boat made of quarts, when cleaning the reaction vessel after the completion of film forming process for a polysilicon or titanium nitride film, thus the method reduces the running cost. After forming a polysilicon film on the semiconductor wafers, the empty wafer boat is placed in the reaction vessel. The interior atmosphere of the reaction vessel is maintained at temperatures in the range of 700 to 1000° C. A mixed gas prepared by diluting chlorine gas with nitrogen gas is supplied at a predetermined flow rate into the reaction vessel to remove the polysilicon film. A titanium nitride film can also be removed in the same manner.

Abstract: A precementum- and/or cementum-derived chemotactic factor (CCTF) of a tooth of Mammalia, characterized in that a molecular weight measured by SDS-PAGE is 67000±1000.

Abstract: A precementum- and/or cementum-derived chemotactic factor (CCTF) of a tooth of a Mammalian is characterized by a molecular weight measured by SDS-PAGE of 67000±1000. A process for purifying a precementum- and/or cementum-derived gingival fibroblast chemotactic factor (CCTF) of a Mammalian tooth includes eluting a protein mixture from precementum and/or cementum of a Mammalian tooth and purifying the precementum- and/or cementum-derived chemotactic factor (CCTF) from the eluted protein mixture by molecular weight fractionation, ion-exchange adsorption chromatography and hydroxyapatite adsorption chromatography. In the process for purifying the gingival fibroblast chemotactic factor (CCTF) the Mammalian is preferably a bovine.

Abstract: The present invention is directed to a method of etching a compound metal oxide film containing plural kinds of metallic element, such as Ba, Sr, Ti or the like. A first cleaning step employing Cl2 gas is carried out in order to remove alkaline earth metal (Ba, Sr) from the film, then a second cleaning step employing ClF3 gas is carried out in order to remove a metal (Ti) other than the alkaline earth metal from the film. The etching method is applicable not only to the etching process in the semiconductor manufacturing but also to the cleaning process for cleaning the processing vessel for film deposition.

Abstract: An unnecessary film is removed by cleaning gas flowing in a treatment vessel 8 for depositing a film on an object W to be processed such as a semiconductor wafer. In this case, the cleaning gas is preheated and activated by the gas heating mechanism 52 and the cleaning gas flows in the treatment vessel 8 in this state. By doing this, an unnecessary film in the treatment vessel made of quartz is removed effectively without damaging the treatment vessel.

Abstract: A permanent magnet 24 is stood vertically at a position shifted on way off the central position of a central piece 20c for a U-shaped iron core 20. An armature 50 has a projection 54 as a fulcrum at an off-centered position so that the fulcrum is placed on an upper end face of the permanent magnet 24. Also, a coil 41 is wounded around a pole piece 20b of the iron core 20 on a near side to the central position.

Abstract: Disclosed is an ink acceptor comprising a sheet-like substrate and an ink accepting layer provided on at least one surface of the substrate, the ink accepting layer containing at least a cationic acrylic resin and an acrylic resin having film-forming properties. Such an ink acceptor is capable of rapidly fixing ink and obtaining a print having excellent water resistance, and is suitably used for printing by an ink-jet printing system.

Abstract: A miniature electromagnetic relay is capable of increasing the coil packing density, yet assuring electrical insulation of the coil from a core of the electromagnet. The relay includes a pair of movable and fixed contacts, an armature carrying the movable contact, and an electromagnet block having an excitation coil which moves the armature for closing and opening the contacts upon being energized. The electromagnet block includes a generally U-shaped core with a center core and a pair of yokes extending from opposite ends of the center core, flanges of dielectric material molded respectively around portions of the yokes, and a dielectric tape fitted around the center core over substantially the entire length of the center core to receive therearound the excitation coil in an electrically insulating relation from the core.

Abstract: A material for treatment of periodontal disease which is comprised of cementum of a human or other animals combined with a bioabsorbable material.

Abstract: The hybrid dental implant of this invention has cementum particle on a surface of a dental implant substrate.

Abstract: A double overhead camshaft engine has a pair of camshafts, interconnected by gearing, which are disposed in juxtaposition over a cylinder head and supported by bearings. Either one of the camshafts is coupled to a crankshaft by a timing belt. A sealing member is disposed between the engine and a front cover so as to sealingly enclose and hide the timing belt. The sealing member, in the form of a rib forming a closed loop, is divided into a plurality of rib segments, at least one of which is formed integrally with the bearing member.

Abstract: An arrangement for supporting a crankshaft in a multicylinder engien comprises a plurality of bulkheads provided in a cylinder block of the engine to be arranged at predetermined intervals along an axis of the crankshaft disposed in the cylinder block, a plurality of bearing caps each coupled with a lower end of one of the bulkheads by a cap bolt screwed into the bulkhead through a part of the bearing cap relatively close to the bulkhead so as to constitute a bearing portion for supporting the crankshaft in conjunction with the bulkhead, a beam structure extending along the axis of the crankshaft to interconnect therethrough adjacent two of the bearing caps, and a reinforcing structure coupled with the beam structure with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends and also coupled with each of side skirt portions of the cylinder block with a plurality of clamped spots generally arranged in the direction along which the crankshaft extends.

Abstract: An engine cylinder block structure includes: a cylinder block integrally formed to include skirts projecting downwardly from both sides of the lower surface of the cylinder block; an oil pan attached to lower surfaces of both skirts of the cylinder block, the oil pan having a deep first portion on a front side and a shallow second portion on a rear side, the first and second portions being connected to each other; flanges integrally formed on lower ends of the skirts for having the oil pan attached thereto; and reinforcing mechanism for reinforcing the strength of both skirts.

Abstract: In an engine cooling structure in which a water pump for causing a cooling water or coolant to flow in a watercool engine is located at or near one end portion of a cylinder block in the direction of the cylinder alignment, coolant passages include a main coolant passage disposed in a cylinder head and the cylinder block, a radiator circulating passage leading the cooling water from the water pump through an engine body to a radiator core, a by-pass passage by-passing the radiator core, and a heater circulating passage leading the cooling water from the engine body to an air-conditioning heater. The radiator circulating passage and the by-pass passage are arranged so as to switch by a thermostat valve. The by-pass passage and/or the heater circulating passage are or is constructed so as to have a coolant return passage disposed in the cylinder block extending in the direction of the cylinder alignment.

Abstract: A cylinder block construction of an engine having a pair of balancer shafts provided at its opposite sides, in which the cylinder block is formed with a pair of bearing boss portions for supporting the balancer shafts, respectively. The cylinder block construction includes a pair of mounting portions for securing a pair of engine mounts to the cylinder block, respectively, which are, respectively, provided, in the vicinity of the bearing boss portions, at opposite side walls of the cylinder block so as to be integrally formed with the bearing boss portions.