Abstract: An optical transmission apparatus includes a transmitter having a data write signal detection circuit for detecting a data write signal to output a parallel/serial conversion timing signal, a parallel/serial conversion circuit for converting parallel input data into serial data in response to the parallel/serial conversion timing signal, and a light-emitting element for converting the serial data output from the parallel/serial conversion circuit into an optical transmission signal, an optical fiber cable for transmitting the optical transmission signal supplied from the transmitter, and a receiver having a light-receiving element for converting the optical transmission signal supplied through the optical fiber cable into serial data, a serial/parallel conversion timing generation circuit for detecting a reception end timing of the serial data output from the receiver to output a serial/parallel conversion timing signal, a serial/parallel conversion circuit for converting serial data output from the receiver

Abstract: A glow plug for diesel engines in which a ceramic heater is supported, with the one end thereof cantilevered toward the outside, by the tip of a hollow holder ceramic heater is composed of a U-shaped heating portion and a pair of leads extending backwards from both ends of the U-shaped heating portion, both being formed integrally by an electrically conductive ceramic material. The outer periphery of at least one of the leads is bonded and held in the holder via an insulating layer. The rear end of the other of the leads is connected by a metallic lead wire to an external connection terminal. The ceramic heater and other component members are bonded integrally by a bonding material containing a reactive metal.

Abstract: There is disclosed a method for forming a color image which comprises developing a silver halide color photographic material having a layer containing a cyan coupler represented by formula (I) with a color developer containing a color-developing agent represented by formula (D) ##STR1## wherein R.sup.1 represents an alkyl group, an alkenyl group, or a cycloalkyl group, R.sup.2 represents an alkyl group, alkenyl group, or cycloalkyl group having 4 to 30 carbon atoms in total, R.sup.3 represents an aryl group, and Z represents a hydrogen atom or a group capable of being released upon a coupling reaction, with a color developer containing a color-developing agent represented by the following formula (D): ##STR2## wherein R.sup.4 represents a hydrogen atom, a halogen atom, or a methyl group, R.sup.5 and R.sup.6 each represent a methyl group or an ethyl group, L represents a methylene group or an ethylene group, and n is 1 or 2.

Abstract: A pyrazoloazoleazomethine dye represented by formula (I) ##STR1## wherein, R.sub.1 represents a substituent having a Hammett's substituent constant value of at least 0.6; Za, Zb, and Zc each represents ##STR2## (wherein R.sub.2 represents a hydrogen atom or a substituent), or .dbd.N--; when Zc=Zb is a carbon-carbon double bond, it may form a part of an aromatic ring; R.sub.3, R.sub.4, and R.sub.5 each represents a hydrogen atom or a substituent; and n represents 1 or 2; said dye may form a dimer or higher polymer by combining with each other or to a polymer through a divalent or higher valent group at R.sub.1, Za, Zb, or Zc.

Abstract: A pyrazoloazole series coupler having the following formula (I) ##STR1## wherein R.sub.1 represents a substituent having a Hammett's substituent constant .sigma..sub.p of at least 0.6;X represents a hydrogen atom or a group capable of being released by the coupling reaction with the oxidation product of an aromatic primary amine developing agent;Za, Zb and Zc each represents .dbd.CH--, ##STR2## (wherein R.sub.2 represents a hydrogen atom or a substituent), .dbd.N-- or --NH--;one of Za--Zb bond and Zb--Zc bond is a double bond and the other is a single bond;when Zb--Zc is a carbon-carbon double bond, this Zb--Zc may form a part of another aromatic ring;R.sub.1, R.sub.2 or X may be a divalent linking group forming a dimer, or R.sub.1 or R.sub.

Abstract: A method for the continuous preparation of a polyethylene having high strength and high modulus of elasticity is here disclosed which comprises the steps of mixing 100 parts by weight of an ultra-high-molecular-weight polyethylene powder having an intrinsic viscosity of 5 to 50 dl/g in decalin at 135.degree. C. with 2 to 50 parts by weight of a liquid organic compound having a boiling point higher than the melting point of the polyethylene, feeding the resulting mixture to between a pair of upper and lower endless belts facing each other, continuously compression-molding the mixture at a temperature less than the melting point of the mixture by pressing means disposed inside the endless belts, and rolling and then drawing the same.

Abstract: A process is provided for the continuous production of a high-strength and high-modulus polyethylene material having excellent properties. According to the process, powder composed of ultra-high-molecular-weight polyethylene powder as a principal component is subjected to compression molding, rolling and stretching. The polyethylene powder has an intrinsic viscosity of 5-50 dl/g as measured at 135.degree. C. in decalin. The compression molding is carried out by feeding the polyethylene powder between endless belts arranged in an opposing up-and-down relation, and conveying the polyethylene powder while holding the same between the endless belts and at the same time, continuously compression molding the polyethylene powder at a temperature lower than its melting point by a compressing means provided inside of the endless belts. In at least one of the compression molding step and rolling step, an olefin polymer having a molecular weight lower than the polyolefin polymer is concurrently processed.

Abstract: A process for producing a polyethylene material for use in products requiring high mechanical strength and high elastic modulus is disclosed. The process involves the use of a specific class of particulate polyethylenes having an intrinsic viscosity of 5-50 dl/g in decalin at 135.degree. C. and the steps of compression molding, solvent immersing, solid-phase extruding or rolling and finally drawing the material in that order.

Abstract: A pyrazoloazoleazomethine dye represented by formula (I) ##STR1## wherein, R.sub.1 represents a substituent having a Hammett's substituent constant value of at least 0.6; Za, Zb, and Zc each represents ##STR2## (wherein R.sub.2 represents a hydrogen atom or a substituent), or .dbd.N--; when Zc.dbd.Zb is a carbon-carbon double bond, it may form a part of an aromatic ring; R.sub.3, R.sub.4, and R.sub.5 each represents a hydrogen atom or a substituent; and n represents 1 or 2; said dye may form a dimer or higher polymer by combining with each other or to a polymer through a divalent or higher valent group at R.sub.1, Za, Zb, or Zc.

Abstract: A process for the production of polyethylene materials oriented at a high level is disclosed in which a selected ethylene polymer as produced is extruded or rolled at a temperature lower than its melting point and subsequently subjected to stretching. The polymer is from 5 to 50 dl/g at 135.degree. C. in decalin in intrinsic viscosity and smaller than 60 .ANG. in crystal size on a plane (110) in the diffraction pattern.

Abstract: A process for producing polyethylene of ultrahigh molecular weight having an intrinsic viscosity of 10-30 dl/g at 135.degree. C. in decalin is disclosed which comprises at least the following two stages of polymerization reaction: (a) a first reaction stage where in ethylene is polymerized with use of a catalyst comprising a solid component containing at least Mg, Ti and/or Va and in the absence or presence of hydrogen of reduced concentration to produce 70-99.5 weight parts of polyethylene having an intrinsic viscosity of 12-32 dl/g at 135.degree. C. in decalin; and (b) a second reaction stage wherein a fresh feed of ethylene is polymerized in the presence of hydrogen of higher concentration to produce 30-0.5 weight parts of polyethylene having an intrinsic viscosity of 0.1-5 dl/g at 135.degree. C. in decalin.

Abstract: A pyrazoloazoleazomethine dye represented by formula (I) ##STR1## wherein, R.sub.1 represents a substituent having a Hammett's substituent constant value of at least 0.6; Za, Zb, and Zc each represents .dbd.CH--, ##STR2## (wherein R.sub.2 represents a hydrogen atom or a substituent), or .dbd.N--; when Zc=Zb is a carbon-carbon double bond, it may form a part of an aromatic ring; R.sub.3, R.sub.4, and R.sub.5 each represents a hydrogen atom or a substituent; and n represents 1 or 2; said dye may form a dimer or higher polymer by combining with each other or to a polymer through a divalent or higher valent group at R.sub.1, Za, Zb, or Zc.

Abstract: A static-inhibited photographic light-sensitive material is provided by incorporating a fluorine-containing block polymer derived from a polymerizable hydrophobic monomer containing at least one fluorine atom and a polymerizable hydrophilic monomer, as an antistatic agent in at least one layer thereof. Unlike known antistatic agents and methods, the use of the above antistatic agent does not adversely affect the photographic characteristics, antitack property, marring resistance, etc., of the photographic light-sensitive material.

Abstract: A process for producing polyethylene materials is disclosed in which particulate polyethylene is drawn at lower temperatures than its melting point, the polymer having an intrinsic viscosity of 5-50 dl/g at 135.degree. C. in decalin and resulting from the polymerization of ethylene at temperatures below the above melting point and with use of a selected catalyst. The polyethylene materials excel in mechanical strength and elastic modulus.

Abstract: A silver halide photographic material having a high covering power with improved pressure resistance and antistatic properties upon development, which comprises at least one silver halide photographic emulsion layer disposed on at least one side of a support, wherein at least one of the silver halide photographic emulsion layer(s) contains a photosensitive silver halide emulsion containing silver iodide and an internally fogged silver halide emulsion, and at least one of the silver halide photographic emulsion layer(s) and an auxiliary layer(s) which is disposed on the same side of the support as that of the support having said emulsion containing silver iodide contains at least one polyoxyethylenic surface active agent selected from the group consisting of compounds represented by formula (I) and (II) ##STR1## wherein R.sub.1, R.sub.2, R.sub.6, R.sub.8, R.sub.10, and R.sub.

Abstract: A finish laminate for high-frequency circuits, which consists of a metal-covered multilayer structure composed of (I) at least one fundamental laminate in which a glass cloth layer (C) is laminated on at least one side of an ultrahigh molecular-weight polyethylene layer (A) with an adhesive layer (B) interposed between the layers (C) and (A), one fundamental laminate being able to be laminated on another with an adhesive layer (B) interposed therebetween, and (II) a metal foil laminated on at least one outermost layer of the multilayer structure with an adhesive layer interposed therebetween. In one embodiment, the glass cloth layer may be impregnated with a curable thermosetting resin or with this resin and a thermoplastic resin to form a resin-containing glass cloth layer (C.sub.1) or (C.sub.2), thereby dispensing with an adhesive layer (B) when laminating a metal foil on the outermost layer of the multilayer structure.

Abstract: The present invention provides an ultra-high-molecular-weight polyethylene solution which is produced by the steps of subjecting a kerosene fraction having a boiling point of 160.degree. to 300.degree. C. to a nucleus hydrogenation treatment at a pressure of 30 to 100 kg/cm.sup.2 at a temperature of 100.degree. to 300.degree. C. in the presence of a metallic catalyst for nucleus hydrogenation of aromatic nuclei; separating and removing at least a part of n-paraffins present in the kerosene therefrom by the use of a molecular sieve made up of a synthesized zeolite in order to obtain a residual oil; fractionating the latter by a rectification apparatus to obtain a hydrocarbon mixture fraction which has a boiling point of 180.degree. to 250.degree. C. and which is substantially free from naphthalene and biphenyl; and dissolving, in the hydrocarbon mixture fraction, an ultra-high-molecular-weight polyethylene having an intrinsic viscosity of 8 or more in decalin at 135.degree. C.

Abstract: An ultra-high molecular weight polyethylene powder easily soluble in organic solvents and suitable for use in the preparation of fibers or films having a high strength and a high elastic modulus, said polyethylene powder having an intrinsic viscosity in the range of 5 to 30 dl/g in decalin at 135.degree. C. and being obtained by at least two-step polymerization reactions which are:a first step of polymerizing ethylene in the absence of hydrogen or at a reduced hydrogen concentration, using a catalyst containing a solid catalyst component and an organometallic compound, said solid catalyst component containing at least magnesium and titanium and/or vanadium, to produce 50-99.5 parts by weight, based on 100 parts by weight of a final polyethylene product, of polyethylene having an intrinsic viscosity of 12 to 32 dl/g in decalin at 135.degree. C.; anda second step of polymerizing ethylene at a higher hydrogen concentration that in said first step to produce 50-0.5 parts by weight of polyethylene.

Abstract: A photographic material is described, comprising at least one layer containing at least one of (i) a polymer of a compound represented by formula (I) ##STR1## wherein R.sup.1 represents a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms,L represents a divalent organic linking group,A represents a divalent organic linking group derived from a polymerizable monomer unit,n represents an average degree of polymerization and is a number of at least 2, andY represents a monovalent organic bonding groupand (ii) a copolymer of the compound represented by formula (I) with a copolymerizable ethylenically unsaturated monomer.

Abstract: A method of forming a color image comprising developing an imagewise exposed silver halide color photographic material with a developing solution containing an aromatic primary amine developing agent in the presence of at least one coupler represented by the following formula (I) or (II): ##STR1## wherein R.sub.1 represents a substituted or unsubstituted alkoxy group, an unsubstituted amino group, a substituted or unsubstituted alkylamino group, a substituted or unsubstituted arylamino group, or a substituted or unsubstituted N-alkylarylamino group; R.sub.2 represents a monovalent substituent; R.sub.3 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, or R.sub.1 and R.sub.