Abstract: The present invention relates to a slurry composition for polishing a high stepped region. The slurry composition for polishing a high stepped region according to an embodiment of the present invention comprises: a polishing liquid containing metal oxide abrasive particles dispersed by positive charges; and an additive liquid containing a polymer comprising at least one element capable of being activated as a positive charge, wherein the polishing selection ratio of the stepped region removal rate in an oxide film pattern wafer having convex portions and concave portions and the stepped region removal rate in an oxide film flat wafer is at least 5:1.

Abstract: A copolymer includes (A) an aromatic vinyl-based monomer, (B) an unsaturated nitrile-based monomer, (C) a cross-linkable siloxane compound, and (D) an N-substituted maleimide-based monomer to realize a synergistic effect of matting characteristics and heat resistance properties. A thermoplastic resin composition including the copolymer, and a molded article including the thermoplastic resin composition are provided.

Abstract: A data storage device is provided. The data store device includes a first printed circuit board (PCB) comprising a main transmission line formed on at least one surface of the first PCB and/or within the first PCB, a memory controller and a plurality of nonvolatile memory devices. The memory controller is provided on the first PCB. The plurality of nonvolatile memory devices are provided on the first PCB. The plurality of nonvolatile memory devices are connected to the memory controller through a channel and exchange data with the memory controller. The channel includes a data transmission line connecting data pads of the memory controller and the nonvolatile memory devices. The data transmission line comprises the main transmission pattern and an open stub contacting the main transmission pattern. The open stub does not contact any other conductor other than the main transmission pattern.

Abstract: An aromatic vinyl-based copolymer of the present invention is a copolymer obtained in a batch polymerization reaction of aromatic vinyl monomers and cyanovinyl monomers, and is characterized by having a weight average molecular weight of about 120,000 to about 400,000 g/mol, and a yellowness index (YI) of at most about 20, as measured according to ASTM D1925 using a 3.2 mm thick specimen. The aromatic vinyl-based copolymer and a thermoplastic resin composition including the same have excellent heat resistance, color, flowability, and impact resistance and the like.

Abstract: The present invention relates to surface-modified colloidal ceria abrasive particles, a preparation method therefor, and a polishing slurry composition containing the same. According to one embodiment of the present invention, the surface-modified colloidal ceria abrasive particles comprise: colloidal ceria abrasive particles; and cerium atoms and hydroxyl groups (—OH) formed on the surface of the colloidal ceria abrasive particles.

Abstract: Disclosed herein is a machine for cutting nozzles of reactor vessels. The machine for cutting nozzles of reactor vessels comprises a cutting unit positioned at an upper surface edge of a reactor vessel having a nozzle and having a saw blade part having different contact areas to cut the nozzle, a drive unit providing the saw blade part with rotary power, and a foreign substance suction unit provided at one end of the cutting unit in contiguity with the saw blade part to suck foreign substances generated when the nozzle is cut by the saw blade part, wherein the foreign substance suction unit sucks the foreign substances by approaching an outer peripheral surface of the nozzle when the saw blade part moves in a cutting direction of the nozzle.

Abstract: The present invention relates to a coating composition capable of embodying paper feel for food packing paper, comprising a resin mixture, additive and solvent, characterized in that said additive comprises 3 to 12% by weight of polyethylene-based wax.

Abstract: Provided is a cutter apparatus for machining a difficult-to-machine material, the cutter apparatus including: a cutting tool body which has a fastening portion formed at a center thereof; one or more cutters which are installed on the cutting tool body, and have superhard insert tips fixed to end portions thereof, respectively; and an angle adjusting unit which is installed in an internal space of the cutters, and adjusts angles of the cutters by spreading or retracting the cutters, so that angles of the cutters may be easily adjusted in accordance with a condition for cutting a difficult-to-machine material, in order to prevent damage to the superhard insert tips when machining a difficult-to-machine material having high hardness and high toughness.

Abstract: The present invention relates to a container for keeping fermented food, having for example, a main body for accommodating fermented food in an interior space; a pressing plate coming into contact with the surface of the fermented food in the main body; and a cover for blocking the opening of inside of the main body; wherein the main body has a stepped part protruded inwards from the inner circumferential surface of a neck part at an upper end portion, and the pressing plate has a protruded rim provided to the periphery of the upper end portion thereof so as to be placed on the stepped part, a vertical section provided to the lower end of the protruded rim and having an outer circumferential surface coming into contact with the inner circumferential surface of the stepped part, and a round surface provided at the lower end of the vertical section and having a bottom surface part coming into contact with the surface of the fermented food.

Abstract: A rubber modified vinyl-based graft copolymer of the present invention has a core-shell structure in which a shell is formed by graft-polymerizing a monomer mixture to a core comprising a rubbery polymer, wherein the monomer mixture comprises: an aromatic monomer comprising an ?-substituted aromatic vinyl-based monomer represented by chemical formula 1 and an aromatic vinyl-based monomer excluding the ?-substituted aromatic vinyl-based monomer; a cyanovinyl-based monomer; and a maleimide-based monomer. A thermoplastic resin composition containing the rubber modified vinyl-based graft copolymer has excellent impact resistance, heat resistance, appearance characteristics and the like.

Abstract: Disclosed is a container for keeping fermented food, including a body configured to contain the fermented food therein, a cover configured to close the body, and a sealing sheet configured to maintain airtightness between the body and the cover. The cover includes a plurality of gas flow channels which extend from a center of a bottom surface to an inner peripheral surface, and a plurality of gas discharge channels which extend from an upper end of the inner peripheral surface to a lower end. In addition, the sealing sheet has a through-hole to allow an interior and an exterior of the body to communicate with each other.

Abstract: In accordance with one aspect of the present invention, there is provided a high-manganese steel brake disk comprising: a first disk member that includes a first disk main body, a plurality of first concave-convex portions arranged on the first disk main body so as to be radially spaced apart from each other, and a first insertion portion formed between the first concave-convex portions adjacent to each other; and a second disk member that includes a second disk main body, a plurality of second concave-convex portions arranged on the second disk main body so as to be radially spaced apart from each other, and a second insertion portion formed between the second concave-convex portions adjacent to each other.

Abstract: The present invention relates to a container for keeping fermented food, having for example, a main body for accommodating fermented food in an interior space; a pressing plate coming into contact with the surface of the fermented food in the main body; and a cover for blocking the opening of inside of the main body; wherein the main body has a stepped part protruded inwards from the inner circumferential surface of a neck part at an upper end portion, and the pressing plate has a protruded rim provided to the periphery of the upper end portion thereof so as to be placed on the stepped part, a vertical section provided to the lower end of the protruded rim and having an outer circumferential surface coming into contact with the inner circumferential surface of the stepped part, and a round surface provided at the lower end of the vertical section and having a bottom surface part coming into contact with the surface of the fermented food.

Abstract: An attachable high-manganese steel brake disk includes a first disk member including air vents disposed radially therein to be spaced apart from each other, and a pair of second disk members installed to be attached to two surfaces of the first disk member and having a braking surface in contact with a brake pad. Between the first disk member and the second disk members, at least the second disk members are provided as high manganese steel members.

Abstract: A semiconductor device includes a plurality of memory chips arranged in a line on a substrate, and a bus connected to the plurality of memory chips and configured to sequentially supply an electrical signal to the plurality of memory chips in accordance with a fly-by topology. An order in which the electrical signal is supplied to the plurality of memory chips is different from an order in which the plurality of memory chips is arranged in the line on the substrate.

Abstract: A thermoplastic resin composition includes (A) a rubber-modified vinyl-based graft copolymer, (B) a silicone-modified aromatic vinyl-based copolymer, and (C) an aromatic vinyl-unsaturated nitrile-based copolymer. The thermoplastic resin composition can exhibit low-gloss characteristics and a synergistic effect of impact resistance and heat resistance.

Abstract: Disclosed herein are a treatment apparatus and method for a waste steam generator, and an installation method of a treatment apparatus for a waste steam generator. The treatment apparatus includes a cutting part for cutting a body of a waste steam generator, a driving part for driving the cutting part, and a support frame for supporting the cutting part and the driving part, wherein the support frame is coupled to an outer peripheral surface of the body of the waste steam generator in a divided state, and the cutting part is driven and cuts the body in a state in which the support frame is coupled to the outer peripheral surface of the body. Consequently, since the treatment apparatus is easily moved and installed, an installation time of the treatment apparatus may be shortened and an exposure time of a worker can be reduced.

Abstract: A data storage device is provided. The data store device includes a first printed circuit board (PCB) comprising a main transmission line formed on at least one surface of the first PCB and/or within the first PCB, a memory controller and a plurality of nonvolatile memory devices. The memory controller is provided on the first PCB. The plurality of nonvolatile memory devices are provided on the first PCB. The plurality of nonvolatile memory devices are connected to the memory controller through a channel and exchange data with the memory controller. The channel includes a data transmission line connecting data pads of the memory controller and the nonvolatile memory devices. The data transmission line comprises the main transmission pattern and an open stub contacting the main transmission pattern. The open stub does not contact any other conductor other than the main transmission pattern.

Abstract: A thermoplastic resin composition includes (A) a graft rubber copolymer, (B) an aromatic vinyl-vinyl cyanide-based copolymer, and (C) a silicone-modified aromatic vinyl-vinyl cyanide-based copolymer. The silicone-modified aromatic vinyl-vinyl cyanide-based copolymer (C) has an average particle size of about 100 ?m or less.