Abstract: An eco-friendly quarantine composition has a function of killing phospholipid enveloped viruses, The eco-friendly quarantine composition includes: 10 to 40 wt. % of polyoxyethylene lauryl ether, 0.01 to 10 wt. % of polyoxyethylene 2-ethylhexyl ether, 0.01 to 10 wt. % of polyoxyethylene polyoxypropylene alkyl ether, and a balance of solvent, based on the total 100 wt. % of the composition. The eco-friendly quarantine composition may have 100% of SARS-CoV-2 virus removal rate in 1 minute and an effect of killing 100% of highly pathogenic avian influenza virus in 1 to 10 minutes. The composition has low cytotoxicity such that IC50 value (%) for human epithelial keratinocyte cells (HaCaT), human bronchial epithelial cells (BEAS-2B), and human monocyte cells (THP-1) is in a range of 0.003 to 0.0045, and effects of having antibacterial activity against non-pathogenic strains, and pathogenic strains.

Abstract: A resin composition includes a polyimide, an ultraviolet (UV) absorber represented by the following Chemical Formula 1 and a remaining N-methyl-2-pyrrolidone, and wherein, in Chemical Formula 1, R1 and R2 are each selected from a hydrogen group, a halogen group, an aliphatic substituent, and an aromatic group.

Abstract: The present invention relates to a weld bead inspection device that inspects welding quality by measuring the state of beads formed at a welding part of a metallic or non-metallic pipe, or the like, and more specifically, to a weld bead inspection device that more efficiently inspects a welding part joined by a method such as thermal fusion for connection between pipes or connection between a pipe and a fitting. The weld bead inspection device includes a housing unit that forms an appearance; an imaging unit that images shapes of the weld beads in an inner space that is open downward from a middle inner side of the housing unit; a control unit that is provided in the housing unit to store image data captured by the imaging unit or to calculate external shapes of the weld beads for determining welding quality on the basis of the image data.

Abstract: A multiaxial artificial muscle tissue is provided. The multiaxial artificial muscle tissue according to an embodiment of the present invention is a multiaxial artificial muscle tissue contractible or stretchable about a plurality of axes and comprises: a first module formed by gelling a hydrogel including muscle cells and extending in a first axial direction so as to be contractible or stretchable in the first axial direction; and a second module formed by gelling the hydrogel and extending in a second axial direction to be contractible or stretchable in the second axial direction, wherein a portion of the hydrogel and a portion of the hydrogel which constitute the first module and the second module, respectively, are integrated with each other such that a portion of the first module and a portion of the second module are connected to each other.

Abstract: A method for recovering dimethylformamide from a polyimide production waste solution containing dimethylformamide, acetic acid, a catalyst, and water, includes (a) a neutralization process of forming the acetic acid into a non-volatile acetate by adding a metal hydroxide to the waste solution, (b) a first distillation process of removing the water contained in the waste solution that has gone through the step (a), (c) a second distillation process of separating and removing the non-volatile acetate from the waste solution, (d) a water content control process of controlling the water content in the waste solution by adding water to the waste solution such that the dimethylformamide and the catalyst contained in the distilled waste solution in the step (c) do not form an azeotropic mixture, and (e) a third distillation process of separating and recovering dimethylformamide through fractional distillation from the waste solution in which the water content has been controlled.

Abstract: Provided are a copolymer-titanium composite which is crosslinked without a crosslinking agent and an initiator and a copolymer-titanium composite composition including the composite. An organic-inorganic hybrid film produced by including the composition may have a significant refractive index without a large increase in a thickness change rate and may solve a problem of a decrease in optical properties by low dispersibility of a conventional organic-inorganic film by a chemically bonded oxygen-titanium network structure, and an organic film having an excellent refractive index may be provided only with the copolymer.

Abstract: In a system for automatically manufacturing a pipe spool, when information on a pipe spool is input to a control unit, manufacturing of a spool pipe by cutting an original pipe, processing of a spool pipe, processing of a connection member, manufacturing of a straight pipe spool by welding a spool pipe to a connection member, and manufacturing a three-dimensional spool by welding a straight pipe spool to the other straight pipe spool or a connection member may be automatically performed by a sensor, an automatic device or a robot included in each process and the control unit connected to each of the devices.

Abstract: A beam frame for a bumper back beam of a vehicle includes: a front plate and a rear plate which have a plate shape and are spaced in parallel to each other; a pair of end girder plates which function as connection bridges for integrally connecting the front plate and the rear plate, each of the end girder plates being connected to the front plate at a first connection angle therebetween and connected to the rear plate at a second connection angle therebetween; and an inner girder plate disposed between the end girder plates, connected to the central point of the width of the front plate at a right angle, and connected to the central point of the width of the rear plate at a right angle.

Abstract: Disclosed is a regenerative braking power generation system for trailers configured such that a generator is installed in a brake disc space portion of a trailer to self-generate electricity necessary for the trailer, wherein the regenerative braking power generation system includes at least one axle (3) fixed to a chassis (2) of a trailer, a wheel hub (5) and/or a brake disc (6) axially installed at an outer surface of the axle (3) via a plurality of bearings (4) so as to be passively rotated, a space portion (7) concavely formed in one side surface of the brake disc (6), a permanent magnet (8) fixed to an inner circumferential surface of the space portion (7) in tight contact therewith, the permanent magnet being configured to be rotated along with the brake disc (6), and a generator stator (9) fixed to an outer circumferential surface of the axle (3) corresponding to the permanent magnet (8).

Abstract: Disclosed is a regenerative braking power generation system for trailers configured such that a generator is installed in a brake disc space portion of a trailer to self-generate electricity necessary for the trailer, wherein the regenerative braking power generation system includes at least one axle (3) fixed to a chassis (2) of a trailer, a wheel hub (5) and/or a brake disc (6) axially installed at an outer surface of the axle (3) via a plurality of bearings (4) so as to be passively rotated, a space portion (7) concavely formed in one side surface of the brake disc (6), a permanent magnet (8) fixed to an inner circumferential surface of the space portion (7) in tight contact therewith, the permanent magnet being configured to be rotated along with the brake disc (6), and a generator stator (9) fixed to an outer circumferential surface of the axle (3) corresponding to the permanent magnet (8).

Abstract: Disclosed is a device for sensing atmosphere temperature in a vehicle brake, the device including a space formed in a brake lining, the space being open toward a drum, a through-hole formed through a brake shoe, a case fitted in the through-hole, the case being fixed to the through-hole by a plurality of fixing means, an insertion recess formed in the case, the insertion recess being formed so as to be open to the rear, an aeration hole formed in a front end of the case, the aeration hole being configured to allow the space and the insertion recess to be connected to each other such that aeration is performed therebetween, a temperature sensor fitted in the insertion recess, the temperature sensor being configured to measure frictional braking temperature transferred to the space, and a fixing member configured to fix the temperature sensor.

Abstract: Provided are a high-strength steel sheet having excellent bendability and formability, and a method for manufacturing same. The steel sheet includes: 0.05 to 0.12% of carbon (C), 2.0 to 3.0% of manganese (Mn), 0.5% or less (excluding 0%) of silicon (Si), 1.0% or less (excluding 0%) of chromium (Cr), 0.1% or less (excluding 0%) of niobium (Nb), 0.1% or less (excluding 0%) of titanium (Ti), 0.0025% or less (excluding 0%) of boron (B), 0.02 to 0.05% of aluminum (sol.Al), 0.05% or less (excluding 0%) of phosphorus (P), 0.01% or less (excluding 0%) of sulfur (S), 0.01% or less (excluding 0%) of nitrogen (N), with a balance of Fe and inevitable impurities, and 35 to 50% of ferrite and 35 to 45% of bainite, and a balance of martensite, the ferrite comprising, by area fraction: 8 to 15% of non-recrystallized ferrite and 27 to 35% of recrystallized ferrite, as a microstructure.

Abstract: In a system for automatically manufacturing a pipe spool, when information on a pipe spool is input to a control unit, manufacturing of a spool pipe by cutting an original pipe, processing of a spool pipe, processing of a connection member, manufacturing of a straight pipe spool by welding a spool pipe to a connection member, and manufacturing a three-dimensional spool by welding a straight pipe spool to the other straight pipe spool or a connection member may be automatically performed by a sensor, an automatic device or a robot included in each process and the control unit connected to each of the devices.

Abstract: The present invention relates to a preparation method of a composition for culturing pancreatic organoids, a composition thereby, and an organoid culture method using the same. The present invention is capable of creating an environment that is more similar to an actual tissue than a conventional Matrigel-based culture system, and in particular, exhibits an effect of facilitating tissue differentiation in pancreatic organoid culture and effectively developing into a form that is similar to an actual tissue.

Abstract: The present invention relates to a preparation method of a composition for culturing lung organoids, a composition thereby, and an organoid culture method using the same. The present invention is capable of creating an environment that is more similar to an actual tissue than a conventional Matrigel-based culture system, and in particular, exhibits an effect of facilitating tissue differentiation in lung organoid culture and effectively developing into a form that is similar to an actual tissue.

Abstract: An electronic device is provided. The electronic device includes a housing comprising a first surface opened while facing a first direction, a second surface facing a second direction that is opposite to the first direction, and one or more side parts disposed in different directions between the first surface and the second surface, a nonconductive structure disposed along at least a portion of the at least one side wall within the housing, and one or more stop recesses including at least one recess formed on one surface of the one or more side parts and a portion of the nonconductive structure surrounding a peripheral portion of the at least one recess.

Abstract: The present invention relates to a weld bead inspection device that inspects welding quality by measuring the state of beads formed at a welding part of a metallic or non-metallic pipe, or the like, and more specifically, to a weld bead inspection device that more efficiently inspects a welding part joined by a method such as thermal fusion for connection between pipes or connection between a pipe and a fitting. The weld bead inspection device includes a housing unit that forms an appearance; an imaging unit that images shapes of the weld beads in an inner space that is open downward from a middle inner side of the housing unit; a control unit that is provided in the housing unit to store image data captured by the imaging unit or to calculate external shapes of the weld beads for determining welding quality on the basis of the image data.

Abstract: A battery module according to one embodiment of the present disclosure includes: a battery cell stack in which a plurality of battery cells are stacked, a bus bar frame connected to the battery cell stack, an electrode lead protruding from the battery cell stack and passing through a lead slot of the bus bar frame, and a bus bar electrically connected to the electrode lead, wherein the bus bar frame includes a base bottom portion and a first rib portion protruding from the base bottom portion, and wherein the first rib portion supports the bus bar.

Abstract: Provided is a composition for forming a silica layer, the composition containing a silicon-containing polymer and a solvent, wherein a silica layer formed of the composition for forming the silica layer satisfies Relation 1. The definition of Relation 1 is as described in the specification. The definition of Relation 1 is the same as described in the specification.