Abstract: A negative electrode active material for a lithium secondary battery which includes first negative electrode active material particles including artificial graphite particles and a carbon coating layer formed on the artificial graphite particle; and second negative electrode active material particles including natural graphite particles, wherein the first negative electrode active material particles have a larger average particle diameter (D50) than an average particle diameter (D50) of the second negative electrode active material particles, and a weight ratio of the first negative electrode active material particles and the second negative electrode active material particles is in a range of 70:30 to 95:5.

Abstract: Disclosed herein are a hybrid download method and apparatus for multiview streaming. The hybrid download method includes requesting a group download for an n?1-th segment from a server, playing an n?3-th segment at a viewpoint VP1 of a viewer, when a group download request for the n?1-th segment is completed, making a group download request for an n-th segment, when a change in a viewpoint of the viewer occurs at a time at which an n?2-th segment is played, playing a low-quality n?2-th segment at a viewpoint VP3, when the group download for the n-th segment is completed, requesting a single download for a high-quality n?1-th segment corresponding to the viewpoint VP3 from the server, and when the single download for the high-quality n?1-th segment corresponding to the viewpoint VP3 is completed, playing the high-quality n?1-th segment at the viewpoint VP3.

Abstract: A binder for a negative electrode of a rechargeable lithium battery, a negative electrode for a rechargeable lithium battery including the same, and a rechargeable lithium battery including the same are provided. The binder includes a copolymer constructed from a unit derived from an aromatic vinyl-based monomer, a unit derived from a (meth)acrylic ester-based monomer, and a unit derived from a triene-based monomer.

Abstract: A binder for rechargeable lithium batteries and a rechargeable lithium battery including the binder are disclosed. The binder for rechargeable lithium batteries includes a unit derived from a (meth)acrylic monomer containing a carboxylic acid group or a carboxylic acid metal salt as a first monomer; a unit derived from a (meth)acrylic monomer containing an amide group or a nitrile group as a second monomer; and a unit derived from a Zwitterionic vinyl or (meth)acrylic monomer as a third monomer.

Abstract: A negative electrode binder for rechargeable lithium batteries and a rechargeable lithium battery including the same are disclosed. The binder of negative electrode includes: a unit derived from a first monomer; and a unit derived from a (meth)acrylic monomer as a second monomer. The first monomer includes at least one of a (meth)allyl ether monomer or a (meth)acryl ester monomer, and each of the (meth)allyl ether monomer and the (meth)acryl ester monomer contains an alkyl group having a carbon number of 3 or more and an anionic functional group.

Abstract: An embodiment is a vehicle door opening and closing apparatus. The vehicle door opening and closing apparatus including a vehicle door, a rail mounted on a vehicle body, a roller unit mounted on the vehicle door, the roller unit configured to move along the rail and allow the vehicle door to open and close in a mode selected from a swing mode and a sliding mode, and a hold lock mounted on the vehicle body, the hold lock including a passing rod configured to releasably hold the roller unit in a predetermined position.

Abstract: A cylindrical secondary battery includes an electrode assembly provided with an electrode tab; a battery can configured to accommodate the electrode assembly through an opening defined at one side thereof; a cap plate covering the opening; a collector disposed between the electrode assembly and the cap plate to electrically connect the electrode tab to the battery can; and a spacer having a body part disposed between the collector and the cap plate, a sealing part configured to seal a gap between the battery can and the cap plate, and a connection part configured to connect the body part to the sealing part. The collector includes a center part; a can coupling part coupled to the battery can; and a bridge connecting the center part to the can coupling part. The bridge of the collector and the connection part of the spacer do not overlap other.

Abstract: A current collector, which electrically connects an electrode assembly and a battery housing included in a cylindrical battery, is provided. The current collector includes a loop-shaped portion configured to surround a periphery of a central axis of the electrode assembly to define an opening region that exposes the first electrode tab; a tab coupling portion configured to extend toward the opening region from an inner side of the loop-shaped portion adjacent to the opening region and coupled with the first electrode tab exposed through the opening region; and a housing coupling portion configured to extend toward the inner circumference of the battery housing from an outer side of the loop-shaped portion and coupled with the battery housing.

Abstract: In the present disclosure, a dehydrogenation catalyst in which cobalt in the form of single atom is supported on an inorganic oxide (specifically, silica) support in which an alkali metal in the form of single atom is fixed by alkali metal pretreatment and a method for producing the same, and a method for producing olefins by dehydrogenating corresponding paraffins, specifically light paraffins in the presence of the dehydrogenation catalyst are described.

Abstract: An electrode assembly, a battery, and a battery pack and a vehicle including the same are provided. One end of the electrode assembly includes a plurality of segment alignments in which the plurality of segment groups are aligned along a radial direction, and an electrolyte impregnation portion provided between segment alignments adjacent in a circumferential direction, wherein an end of the first active material portion is exposed between winding turns of the separator. The segments included in the segment alignment are bent toward the core to form a bending surface region. An end of the separator is spaced apart from a criterion line extending in a winding axis direction along a location corresponding to the plurality of cut grooves by 30% or less of a minimum height of the segments forming the bending surface region.

Abstract: A light-emitting element includes a light-emitting element core extending in a direction and including a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and a device active layer disposed between the first semiconductor layer and the second semiconductor layer, a device insulating film surrounding a lateral surface of the light-emitting element core, and a reflective film disposed on an outer lateral surface of the device insulating film and surrounding at least a lateral surface of the device active layer.

Abstract: A button-type secondary battery according to the present disclosure includes: an electrode assembly; a lower can configured to accommodate the electrode assembly; an upper can coupled to an opening of the lower can; a gasket configured to insulate a coupling portion between the lower can and the upper can; and a center part provided at a core portion of the electrode assembly, wherein the center part includes: a center pin inserted into the core portion of the electrode assembly; and an upper plate provided with an upper cover surface provided on an upper end of the center pin to protect an upper portion of the electrode assembly, wherein an edge of the upper cover surface is provided to be supported on an inner wall of the lower can.

Abstract: A display device includes a display panel, which includes a first area including a display area, a second area spaced apart from the first area in a first direction, and a third area located between the first area and the second area and configured to bend, a first substrate including a rigid material, a second substrate disposed on the first substrate and including a flexible material, a protective layer disposed on the second substrate and overlapping the third area, and an alignment mark disposed on the first substrate, a cutting area that overlaps the third area, wherein a portion of the second substrate and a portion of the protective layer are removed from the cutting area, wherein the first substrate at least partially overlaps the cutting area, and wherein the alignment mark is disposed where the first substrate and the cutting area overlap each other.

Abstract: A display device including a first substrate including a display area and a non-display area surrounding the display area, a second substrate disposed on the first substrate, a display element layer disposed on the second substrate and overlapping the display area, a first encapsulation layer disposed on the display element layer, overlapping the non-display area, and including an inorganic material, and a second encapsulation layer disposed on the first encapsulation layer, including a concavo-convex structure, and including an inorganic material. The first substrate includes a first surface overlapping an edge portion of the first substrate and facing the second substrate, and a first inclined surface extended to the first surface. An inclination angle formed by the first surface and the first inclined surface is an obtuse angle, and the first inclined surface overlaps the second encapsulation layer in a direction perpendicular to the first substrate.

Abstract: There is provided a display device including a second substrate corresponding to a main area, a pad area, and a bending area between the main area and the pad area, a first substrate at the main area and at the pad area and beneath the second substrate, and a display element layer at the main area and above the second substrate, wherein the first substrate includes a first sub-substrate overlapped with the main area, and including a first surface adjacent the second substrate, a second surface opposite to the first surface, and a first side directed toward the bending area, and a second sub-substrate spaced apart from the first sub-substrate and overlapped with the pad area, wherein a first inclined angle formed by the second surface and the first side is an obtuse angle.

Abstract: A low-loss spiral coil includes a conducting wire wound N turns of which a width of each of wires corresponding to each of sections of the conducting wire is determined by setting an entire width of the conducting wire to be a width of M sections of the conducting wire, and then determining the width of each of the wires such that a resistance of the spiral coil formed based on the width of the M sections is minimized.

Abstract: A light emitting device may include a first semiconductor layer; an active layer disposed on the first semiconductor layer; a second semiconductor layer disposed on the active layer; an electrode layer disposed on the second semiconductor layer; a protective layer disposed on the electrode layer; and an insulating film enclosing outer circumferential surfaces of at least the first semiconductor layer, the active layer, the second semiconductor layer, and the electrode layer, and exposing a surface of the first semiconductor layer and a surface of the protective layer.

Abstract: Proposed is a device for assembling and disassembling a top nozzle of a nuclear fuel assembly wherein the top nozzle of the nuclear fuel assembly is assembled and disassembled with improved convenience, and the load value is measured to ensure stable operations without damaging components. To this end, the device includes a pedestal including a threaded hole through both sides, a screw bar screw-coupled to the threaded hole to reciprocate in a straight line, a top nozzle plate configured to be detachably coupled to the screw bar and to be able to be hooked by and coupled to the top nozzle of the nuclear fuel assembly, and a load cell provided between the top nozzle plate and the screw bar to measure a load value applied to the top nozzle plate hooked on the top nozzle.

Abstract: An electrode assembly, a battery, and a battery pack and a vehicle including the same are provided. The first electrode of the electrode assembly includes a first active material portion coated with an active material layer along a winding direction and a first uncoated portion not coated with an active material layer and exposed beyond the separator. The first uncoated portion includes a first portion adjacent to the core of the electrode assembly, a second portion adjacent to the outer circumference of the electrode assembly, and a third portion between the first portion and the second portion. The third portion includes a plurality of segments spaced apart along the winding direction by forming a cut groove in plural along the winding axis direction. The height of the first portion may be relatively lower than the height of the uncoated portion at the bottom of the cut groove.

Abstract: Proposed are a freight replacement apparatus and a freight replacement method. According to an embodiment of the present disclosure, the freight replacement apparatus includes an automated loading part configured to load thereon a first freight and to move to a designated position, a transporting part configured to load thereon a second freight different from the first freight and to transfer the second freight, a buffer part disposed between the automated loading part and the transporting part, and a replacement part configured to replace the first freight and the second freight together with the buffer part. Therefore, damage to freight may be prevented, and a replacement speed between different freights may be increased.