Abstract: A nonvolatile semiconductor memory includes: a memory cell unit including a plurality of memory cells having an electric charge accumulation layer and a control electrode, said memory cells being electrically connected in series; a plurality of word lines, each of which is electrically connected to said control electrode of said plurality of memory cells; a source line electrically connected to said memory cells at one end of said memory cell unit; a bit line electrically connected to said memory cells at the other end of said memory cell unit; and a control signal generation circuit, which during a data readout operation staggers a timing for selecting the word line connected to said memory cells of said memory cell unit from a timing for selecting a non-selected word line connected to a non-selected memory.

Abstract: A motor shaft puts through a motor casing and a gear casing which are detachably connected to each other. In the motor casing, a rotor is fixed to the motor shaft, while a stator is fixed on the inner circumferential surface of the motor casing. The motor shaft has a worm which engages with a worm wheel in the gear casing. A collar in which the motor shaft is pressingly fitted is provided in the middle of the motor shaft at the end of the gear casing. The motor shaft is supported at each end of the worm in the gear casing.

Abstract: An electric motor comprises a motor case having a motor shaft and a gear case assembled with the motor case detachably. The motor shaft comprises a base end, an intermediate portion, and a remote end which are supported by the first, the second and the third bearing devices, respectively. The third bearing device has a slide bearing, a cap, an adjusting screw, and a lock nut. The adjusting screw stabilizes an axial clearance of the motor shaft. The slide bearing is engaged in a larger diameter bore of a shaft bore.

Abstract: A motor comprises a rotor fixed to a shaft and a stator comprising a permanent magnet on the inner circumferential surface of a motor casing. The shaft extends from the opening end of the motor casing and has a worm wheel in a gear casing. The end face of the gear casing has an annular projection. The motor casing has an outward flange at the opening end. When the motor casing is connected with the gear casing, an elastic O-ring is fitted between a space formed by the outer circumferential surface of the annular projection, an outer vertical seat face of the gear casing and a corner of the outward flange thereby achieving suitable alignment of the motor casing with the gear casing. The permanent magnet is made of Nd magnet which is pressingly fitted on the inner circumferential surface of the motor casing.

Abstract: A rotation control motor comprises a shaft, an armature having an armature core of which teeth are wound by wires to form coils, a commutator, and a field magnet. The armature core has a plurality of teeth, the commutator has a plurality of commutator segments corresponding to the number of teeth, and the coils comprise a normal coil and a brake coil. When the motor rotates faster than expected, the brake coil brakes the motor by magnetic flux, and the motor can rotate within a stable speed range.

Abstract: A motor comprises a yoke as casing, a shaft extending along a center of the yoke, an annular stator fixed to the yoke and an armature fixed to the shaft to rotate with the shaft inside the stator. The armature comprises a plurality of teeth on the outer circumferential surface. A wire is wound on any of the teeth to form a normal coil. Another wire is wound on another of the teeth to form a brake coil that is a short circuit. When the motor rotates much faster, the brake coil produces magnetic flux which acts as load against the rotation of the motor to allow the motor to rotate slower.

Abstract: In a capacitor-containing semiconductor integrated circuit, a portion in which a plurality of capacitors are serially connected together is arranged so that at least part of the capacitors is formed as a well capacitor.

Abstract: Providing a method for improving the germination of plant seeds for use in agriculture, gardening and tree planting on mountains and in forests, where the germination of the seeds is suppressed physically or physiologically due to the hard seed coat (testa or pericarp or the like) as the structures surrounding seed embryos, by secure and uniform treatment of each seed without any damage of seed embryo to produce seeds with improved germination in a stable manner without any loss and without creating problems in the working environment, and providing germination improved seeds. Germination is improved by allowing laser beam to irradiate a part of the seed coat of a plant seed to perforate a part of the seed coat to thereby overcome physical or physiological factors causing the suppression of germination, such as gas permeability and water permeability to seed embryo.

Abstract: In a longitudinally coupled multi-mode surface acoustic wave filter, for the purpose of setting a stop band width of reflectors to a proper width according to a required filter, since a line occupation rate of the reflectors has been made smaller than a line occupation rate of an IDT electrode, and respective periods of the reflector and the IDT electrode are set properly such that the stop band width of the reflector and the band width of the longitudinally coupled multi-mode surface acoustic wave filter have been approximately equal to each other, means for broadening the band of the longitudinally coupled multi-mode SAW filter can be obtained for a broad-band RF filter of a portable telephone used in a new system.

Abstract: The object of the present invention is to provide a method for producing substituted-1,3,5-triazine derivatives at high yield, in which at least one of carbon atoms in the ring thereof is substituted by a secondary amine group having at leat one of alkyl groups. The method of the present invention is a method for alkylation of 1,3,5-triazine derivatives, characterized by reacting 1,3,5-triazine derivatives (melamines, melamine derivatives, various kinds of guanaminde derivatives, etc.) which has at least one or more amino groups or mono-substituted amino groups on carbon atom of the ring thereof, with aldehydes or ketones alcohols in the presence of a catalyst of a metal of group VII and/or group VIII in the periodic table and a hydrogen-containing gas to alkylate said at least one of amino groups or mono-substituted amino groups.

Abstract: A 1-phenyl, naphthyl or aralkyl-4-(N,N-di-substituted carbamoyl)-1,2,4-triazol-5-one derivative represented by the general formula (I) ##STR1## wherein A is an unsubstituted or substituted phenyl group, 1-naphthyl group, 5,6,7,8-tetrahydro-1-naphthyl group or an aralkyl group such as an unsubstituted or substituted benzyl group and so on, R.sub.1 is a lower alkyl group and so on, and R.sub.2 is an unsubstituted or substituted phenyl group and so on, was prepared as novel compounds. This 1-substituted-4-carbamoyl-1,2,4-triazol-5-one derivative does not substantially exhibit phytotoxicity to various agricultural crop plants and therefore is useful as a selective herbicide.

Abstract: A method for alkylation of at least one or more amino groups or mono-substituted amino groups, each on a carbon atom of a triazine ring of 1,3,5-triazine derivatives (melamine, melamine derivatives and various kinds of guanamine derivatives and the like), which includes reacting the 1,3,5-triazine derivatives having at least one or more amino groups or mono-substituted amino groups with alcohols in the presence of a catalyst of a metal of group VII and/or group VIII in the periodic table. The object of the invention is to provide a method for alkylation of 1,3,5-triazine derivatives, which includes alkylating amino groups or mono-substituted amino groups in carbon atoms of a 1,3,5-triazine ring, whereby substituted 1,3,5-triazine derivatives which are a group of useful compounds and which are widely used as intermediates of fine chemicals such as agricultural chemicals, medications, dye-stuffs, paints and the like, as resin materials and as flame-retardant materials can be easily produced in high yields.

Abstract: A process for the preparation of the compound of the formula ##STR1## comprising dimerizing norbornadiene in the presence of N-methylpiperidine and a combined catalyst of (1,5-cyclooctadiene)(1,3,5-cyclooctatriene)-ruthenium and N,N-dimethylacrylamide.

Abstract: An improved wheelbarrow is disclosed, comprising a wheel, a tray, a pair of handles, and a front guard, the improvement being in the handles and the front guard, in that each handle is provided with a roundish handlegrip including a first grip, round grip portion and second grip to facilitate an easier and safer forward dumping of load without switching handgrips, and in that the front guard facilitates a stabler forward dumping of load. The front guard may comprise at least one bar portion in parallel to the wheel axis or a curved plate. The front guard may alternatively comprise a pair of bar portions extending along the circumference of the wheel.

Abstract: This invention relates to a process for producing .alpha., .beta.-unsaturated alcohol, which uses unsaturated aldehyde as a starting material, and in which only the aldehyde group in the unsaturated aldehyde is selectively hydrogenated by hydrogen transfer reaction, while the carbon-carbon double bond is left as it is. The method is characterized by using a catalyst which contains at least one oxide selected from the group consisting of oxides of yttrium, lanthanum, praseodymium, neodymium and samarium, as a main active ingredient. The catalysts exhibit high activity and selectivity, as well as a long life span.

Abstract: A process for producing a heterocyclic tertiary amine of the formula (III): ##STR1## wherein A is a nitrogen atom or C-R.sup.5, B is a nitrogen atom or C-R.sup.6, is a single bond or a double bond, and each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 which may be the same or different, is a hydrogen atom, an acyl group, a halogen atom, a cyano group, etc., provided that two of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may together form a 3-membered, 4-membered, 5-membered or 6-membered aliphatic ring, a heterocyclic rig or aromatic ring, and R.sup.7 is a C.sub.1-6 alkyl group which may be substituted, etc., which process comprises reacting a heterocyclic secondary amine of the formula (I): ##STR2## wherein A, B, , R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, with an alkylating agent of the formula (II):R.sup.7 --X (II)wherein R.sup.7 is as defined above, and X is a hydroxyl group, a halogen atom, a OSO.sub.3 R.sup.7 group, a OSO.sub.2 R.sup.7 group, a OCO.sub.2 R.sup.7 group, a OCOR.

Abstract: A resin used for magnetic recording media, comprising a vinyl chloride copolymer containing vinyl monomers with hydroxyl groups and vinyl monomers with quaternary ammonium salt groups as component units. The resin is made by a method which comprises polymerizing an organic solvent solution containing vinyl chloride, vinyl monomers with hydroxyl groups and vinyl monomers with quaternary ammonium salt groups in a reacting apparatus to thereby precipitate a vinyl chloride copolymer, the interior surface of said reacting apparatus, which comes into contact with said organic solvent solution being coated with a fluororesin.

Abstract: A heat transfer sheet comprises a substrate sheet and a heat transfer layer laminated on the substrate sheet and containing a dye which can be caused to migrate by heating to be transferred onto a transferable sheet, said heat transfer sheet containing a polyvinyl acetacetal resin as a binder component, the acetal moiety of said polyvinyl acetacetal resin being 50% by weight or more based on the total amount of the resin, and 80% by weight or more of said acetal moiety comprising polyvinyl acetacetal.A process for producing a polyvinyl acetacetal resin by the reaction of a polyvinyl alcohol and acetaldehyde in an aqueous phase in the presence of 4 to 10% by weight of an acid catalyst comprises initiating precipitation of an acetalated product by maintaining the reaction system at a temperature of 8.degree. to 17.degree. C. for 30 minutes or longer, and then maintaining said reaction at a temperature of 25.degree. to 40.degree. C.

Abstract: A resin used for magnetic recording media, comprising a vinyl chloride copolymer containing vinyl monomers with hydroxyl groups and vinyl monomers with quaternary ammonium salt groups as component units. The resin is made by a method which comprises polymerizing an organic solvent solution containing vinyl chloride, vinyl monomers with hydroxyl groups and vinyl monomers with quaternary ammonium salt groups in a reacting apparatus to thereby precipitate a vinyl chloride copolymer, the interior surface of said reacting apparatus, which comes into contact with said organic solvent solution being coated with a fluororesin.