Abstract: Lithium secondary batteries are disclosed. In an embodiment, a lithium secondary battery includes an anode including an anode active material that includes carbon-based active material particles including carbon, the carbon-based active material particles having a Brunauer-Emmett-Teller (BET) specific surface area of 3.0 m2/g to 5.0 m2/g and an average particle diameter (D50) of 5?m to 7.5 ?m, a cathode facing the anode, and a non-aqueous electrolyte solution including a non-aqueous organic solvent that includes a propionate-based organic solvent including propionate and a lithium salt. A content of the propionate-based organic solvent relative to a total volume of the non-aqueous organic solvent is 55 vol % or more.

Abstract: Provided are an apparatus and method for controlling a feed supply amount based on feed intake intention of livestock. The apparatus for controlling a feed supply amount based on feed intake intention of livestock includes a feed intake intention quantification part which perceives feed intake intention of livestock by using image information obtained by photographing a certain region within a livestock farm and quantifies the feed intake intention of livestock as a feed intake intention value, and a feed intake intention-based feed supply amount control part generating a command for controlling a feed supply amount in consideration of the feed intake intention value.

Abstract: A vehicle body structure includes a roof side assembly connecting upper end portions of pillars of a vehicle body in a longitudinal direction of the vehicle body, the roof side assembly forming an A-pillar itself, a mounting bracket fixing the roof side assembly to a lower vehicle body, and an external garnish coupled to an outside of the roof side assembly, wherein the roof side assembly includes a pipe extending in the longitudinal direction of the vehicle body, the pipe including a closed cross-section, and a molding member injection-molded with the pipe inserted thereinto.

Abstract: A vehicle body structure includes a roof side assembly connecting upper end portions of all pillars of a vehicle body along a front and rear direction of the vehicle body and forming an A-pillar itself; a plurality of brackets for fixing the roof side assembly to a lower vehicle body; and an external garnish coupled to an external side of the roof side assembly.

Abstract: The present invention relates to a method for preparing an alkali metal ion conductive chalcogenide-based solid electrolyte, a solid electrolyte prepared thereby, and an all-solid-state battery comprising the same.

Abstract: A data-based nuclear power plant design basis management system and a method therefor are disclosed. According to an embodiment of the present invention, the data-based nuclear power plant design basis management system comprises a database for storing: information on a plurality of design basis for defining a design basis document for configuration management in a nuclear power plant; information on a category, corresponding to each of the design basis, among a plurality of categories; and an associative relationship between the plurality of design basis, wherein the plurality of categories includes design requirements (REQ), at least one design basis specification (DBS) for satisfying the REQ, and the like.

Abstract: A vehicle carpet and mat fixing device may include an upper mat fastener part; a lower mat fastener part coupled to the upper mat fastener part; an upper carpet fastener part coupled to the lower mat fastener part by an upper carpet fastener protrusion protruding toward the lower mat fastener part; and a lower carpet fastener part coupled to the upper carpet fastener part, wherein the upper mat fastener part is hooked to the lower mat fastener part by an upper mat fastener hook circumferentially formed in the upper mat fastener part to fix a mat, and the lower carpet fastener part is coupled to the upper carpet fastener part by a male hook of the lower carpet fastener part to fix a carpet.

Abstract: Disclosed is an apparatus for providing an intelligent general arrangement (GA) drawing of an atomic power plant. The apparatus comprises an intelligent GA drawing utilization unit for providing additional information on an equipment included in a particular level of a particular building of the atomic power plant, on the basis of an intelligent GA drawing in response to an user's input.

Abstract: A vehicle carpet and mat fixing device may include an upper mat fastener part; a lower mat fastener part coupled to the upper mat fastener part; an upper carpet fastener part coupled to the lower mat fastener part by an upper carpet fastener protrusion protruding toward the lower mat fastener part; and a lower carpet fastener part coupled to the upper carpet fastener part, wherein the upper mat fastener part is hooked to the lower mat fastener part by an upper mat fastener hook circumferentially formed in the upper mat fastener part to fix a mat, and the lower carpet fastener part is coupled to the upper carpet fastener part by a male hook of the lower carpet fastener part to fix a carpet.

Abstract: A data-based nuclear power plant design basis management system and a method therefor are disclosed. According to an embodiment of the present invention, the data-based nuclear power plant design basis management system comprises a database for storing: information on a plurality of design basis for defining a design basis document for configuration management in a nuclear power plant; information on a category, corresponding to each of the design basis, among a plurality of categories; and an associative relationship between the plurality of design basis, wherein the plurality of categories includes design requirements (REQ), at least one design basis specification (DBS) for satisfying the REQ, and the like.

Abstract: A polyolefin composite composition is used in an automotive air duct. The polyolefin composite composition is useful as an automotive air duct component material due to excellent mechanical property, heat resistance, and foaming property as a composition in which a polyethylene resin and a long chain branched polypropylene resin having low crystallization of 45% or less are included as a base resin.

Abstract: A polyolefin composite composition is used in an automotive air duct. The polyolefin composite composition is useful as an automotive air duct component material due to excellent mechanical property, heat resistance, and foaming property as a composition in which a polyethylene resin and a long chain branched polypropylene resin having low crystallization of 45% or less are included as a base resin.

Abstract: A method for welding tubes in a shell and tube heat exchanger, including forming ring-shaped tube sheet grooves on the tube sheet at the shell side, inserting tube joint members into the tube insertion holes of the tube sheet, producing ring wires by cutting a welding wire into pieces and bending the pieces into a ring shape, affixing the ring wire to the outer circumference of one end of the tube, inserting the end of the tube into the tube sheet such that the end of the tube contacts one end of the tube joint member and is located within the recessed distance range of the tube sheet groove, and performing shell side welding by inserting a welding torch into the tube joint member and welding the end of the tube joint member, the end of the tube and the joint part to the tube sheet at the shell side using the ring wire as filler metal.

Abstract: A method for welding tubes to tube insertion holes formed through tube sheets of a shell and tube heat exchanger, including forming ring-shaped tube sheet grooves, spaced from the tube insertion holes by a designated distance in the outer circumferential direction, on one surface of the tube sheet at the shell side, inserting tube joint members, having a cylindrical shape with the same diameter as that of the tubes, into the tube insertion holes of the tube sheet, manufacturing ring wires by cutting a welding wire having a long length into pieces having a designated length and bending the pieces into a ring shape so as to be inserted into the outer circumferences of the tubes, inserting the ring wire into the outer circumference of one end of the tube, inserting the one end of the tube into the tube sheet in one direction such that the one end of the tube contacts one end of the tube joint member facing the one end of the tube and is located within the recessed distance range of the tube sheet groove, perform