Abstract: A calculation unit (22) sets each frame, of a moving image including a plurality of frames, as a target frame, calculates a motion vector with reference to a reference frame over an entirety of the target frames, and calculates an index indicating a magnitude of change between a key frame and the target frame, which is represented by using the motion vector, a judgement unit (25) judges whether or not the calculated index is equal to or greater than a predetermined threshold value, a first detection unit (27) detects a region indicating an object from the target frame by using an object detection model in a case in which the index is equal to greater than the threshold value, a second detection unit (28) detects a region on the target frame, which is obtained by correcting a position of a region detected in the reference frame by using the motion vector in a case in which the index is less than the threshold value, and an output unit (30) outputs information of the region detected by the first detection unit

Abstract: Provided is a method for manufacturing a steel member through hot press forming using a steel sheet that contains a comparatively large amount of Si. The steel sheet includes, in mass ratio, C: 0.15% to 0.35%, Si: 1.0% to 3.0%, Mn: 1.0% to 3.0%, Al: more than 0% up to 0.10%, Ti: ([N]×48/14)% to 0.10% (where [N] denotes the amount of N in the steel sheet), B: 5 ppm to 50 ppm, P: more than 0% to less than 0.015%, S: more than 0% up to 0.010%, and N: more than 0% up to 0.010%, the balance being iron and unavoidable impurities. The average oxygen concentration from an outermost surface of the steel sheet down to a depth of 10 ?m in a sheet thickness direction is 0.70 mass % or higher.

Abstract: Provided is a method for manufacturing a steel member through hot press forming using a steel sheet that contains a comparatively large amount of Si. The steel sheet includes, in mass ratio, C: 0.15% to 0.35%, Si: 1.0% to 3.0%, Mn: 1.0% to 3.0%, Al: more than 0% up to 0.10%, Ti: ([N]×48/14)% to 0.10% (where [N] denotes the amount of N in the steel sheet), B: 5 ppm to 50 ppm, P: more than 0% to less than 0.015%, S: more than 0% up to 0.010%, and N: more than 0% up to 0.010%, the balance being iron and unavoidable impurities. The average oxygen concentration from an outermost surface of the steel sheet down to a depth of 10 ?m in a sheet thickness direction is 0.70 mass % or higher.

Abstract: An aspect of the present invention is a steel sheet for quench hardening, satisfying a prescribed composition and having a Mn concentration satisfying the formula (1): S1+S2<?10×[Mn]+44 (1), where [Mn] is Mn concentration in a steel sheet analyzed by inductively coupled plasma emission spectrography (% by mass); S1 is an area % of the region where the Mn concentration analyzed by an electron beam microprobe analyzer in the structure at a position of ¼ of the steel sheet thickness is two times or more the [Mn]; and S2 is an area % of the region where the Mn concentration analyzed by an electron beam microprobe analyzer in the structure at a position of ¼ of the steel sheet thickness is 0.5 times or less the [Mn].

Abstract: A steel sheet for hot pressing which contains, in mass %, C: 0.15% or more to 0.40% or less, Si: 1.00% or more to 2.00% or less, Mn: 1.50% or more to 3.00% or less, Ti: (N×48/14)% or more to 0.10% or less, B: 0.0005% or more to 0.0050% or less, Al: more than 0% to 0.10% or less, P: more than 0% to 0.05% or less, S: more than 0% to 0.01% or less, N: more than 0% to 0.010% or less, iron and inevitable impurities. This steel sheet for hot pressing is also characterized by having a dislocation density of 10×1014/m2 or more, an area ratio of pearlite relative to the whole structure being 30% or more, and a tensile strength of 1100 MPa or less.

Abstract: Provided is a method for manufacturing a steel member through hot press forming using a steel sheet that contains a comparatively large amount of Si. The method allows hot press forming to be carried out satisfactorily by stably and reliably suppressing shedding/peeling of oxide scale during hot press forming, even without restricting hot press forming conditions to a narrow range. The steel sheet includes, in mass ratio, C: 0.15% to 0.35%, Si: 1.0% to 3.0%, Mn: 1.0% to 3.0%, Al: more than 0% up to 0.10%, Ti: ([N]×48/14) % to 0.10% (where [N] denotes the amount of N in the steel sheet), B: 5 ppm to 50 ppm, P: more than 0% to less than 0.015%, S: more than 0% up to 0.010%, and N: more than 0% up to 0.010%, the balance being iron and unavoidable impurities. The average oxygen concentration from an outermost surface of the steel sheet down to a depth of 10 ?m in a sheet thickness direction is 0.70 mass % or higher.

Abstract: A stabilizer composition for synthetic resin is described comprising a piperazine derivative represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an alkyl group having from 12 to 20 carbon atoms or a 2,2,6,6-tetramethyl-4-piperidyl group; R.sub.3 and R.sub.4 each represents a hydrogen atom or a methyl group; and n and m each represents 2 or 3.A synthetic resin composition is also described comprising polyolefin and the aforesaid piperazine derivative.

Abstract: A process for preparing a pentaerythritol-tetrakis(3-alkylthio-propionate) represented by the general formula: ##STR1## wherein R represents an alkyl group having from 8 to 30 carbon atoms, is disclosed, comprising reacting an alkylmercaptan having from 8 to 30 carbon atoms with an acrylic ester or an acrylic amide to form a 3-alkylthio-propionic acid ester or a 3-alkylthio-propionic acid amide, hydrolyzing the ester or amide to form a 3-alkylthio-propionic acid, and then reacting this product with pentaerythritol. The desired product can easily be obtained at high purity and high yield by this process.

Abstract: A washing solution for flexographic ink is disclosed, comprising the components (A) to (E):Component (A):0.05 to 35 wt % of an amine selected from water-soluble aliphatic primary or secondary amines having 2 to 3 carbon atoms, ammonia and morpholine, or an alkaline substance selected from hydroxides, carbonates, borates, silicates, phosphates and alkaline lower fatty acid salts of alkali metal;Component (B):0.001 to 1.0 wt % of a defoaming agent;Component (C):0 to 75 wt % of an aliphatic polyhydric alcohol having a molecular weight of 500 or less;Component (D):0 to 75 wt % of a water-soluble aliphatic monohydric alcohol having 1 to 4 carbon atoms; andComponent (E):25 to 99.9 wt % of water.

Abstract: Dibromo-dicyanobutane is purified by washing with an aqueous solution of a compound wherein a cationic component is an alkali metal, alkaline earth metal, or ammonium ion and an anionic component is an oxygen-containing anion. The process can prevent dibromo-dicyanobutane from coloration, an irritating odor, and caking.

Abstract: Tertiary amines are prepared by reacting a long-chain olefin with carbon monoxide, hydrogen, and a primary or secondary amine in the presence of a catalyst composed of a rhodium- and/or ruthenium-containing compound using a specific solvent, followed by phase separation of the reaction product. This process facilitates recovery and re-use of the expensive catalysts.

Abstract: Crude 2-methyleneglutaronitrile containing as impurities a metal halide, a trialkylamine, and the trimer or a higher polymer of acrylonitrile can be effectively purified by treating the crude 2-methyleneglutaronitrile with hydrochloric acid, sulfuric acid or nitric acid of a concentration of 1 to 30% by weight and then subjecting the treated methyleneglutaronitrile to vacuum distillation.

Abstract: From an acrylonitrile-dimerization liquid product prepared by contacting acrylonitrile with a specific catalyst composed of a metal halide and a trialkylamine, 2-methyleneglutaronitrile is efficiently recovered by a process which comprises contacting the reaction liquid product under stirring with benzene, toluene or xylene as well as with water in specific ratios, and then separating the resulting aromatic hydrocarbon layer from the mixture to recover 2-methyleneglutaronitrile.