Abstract: The present application relates to a use for cartilage regeneration and/or use for osteoarthritis treatment of a mesenchymal stem cell expressing TSG-6 protein. The present application provides a composition for cartilage regeneration and a pharmaceutical composition for osteoarthritis treatment, comprising a mesenchymal stem cell expressing TSG-6 protein as an active ingredient. The composition for cartilage regeneration and/or the pharmaceutical composition for osteoarthritis treatment provided by the present application can increase collagen expression of cartilage cells, reduce inflammation, and restore the cartilage structure.

Abstract: A catalyst for a dehydrogenation reaction includes a carrier including Al2O3 having a theta (?) phase, an active metal supported on the carrier and including a noble metal, and an auxiliary metal supported on the carrier and different from the active metal.

Abstract: A strut connector may include a connector base, a cover band, a cover band fixer for fixing the cover band to the connector base, and a connection jack. The connector base may include a base body; a support band protruding from one surface of the base body; a base reinforcement boss protruding from the one surface of the base body to a smaller height than the support band; a base connection boss protruding in the opposite direction of the protruding direction of the support band; a base through-hole formed through the base body, the base reinforcement boss and the base connection boss; and a base screw portion formed on the inside of the base through-hole. The cover band may be separably coupled to the connector base.

Abstract: An anti-icing honeycomb core composite manufactured by forming an electromagnetic wave absorption layer by using dielectric fiber, molding the electromagnetic wave absorption layer into a honeycomb core structure by using a molded part including a first base, a second base, and an inner block, hardening the honeycomb core structure, and removing the molded part. The molding step includes first stacking, on the first base including a plurality of grooves in which the inner blocks each having a hexagonal column shape are able to be seated, a plurality of the inner blocks and a plurality of the electromagnetic wave absorption layers as the honeycomb core structure so that the electromagnetic wave absorption layer is disposed between the plurality of inner blocks, and second stacking covering the inner blocks and the electromagnetic wave absorption layers stacked on the first base with the second base having the same shape as the first base.

Abstract: An operating method of an instant messenger application includes providing a first view including types of data sent and received through a chatroom, receiving a selection with respect to one of the types, and providing a second view integrating and displaying data corresponding to the selected type, among data sent and received in a plurality of chatrooms in which a user participates.

Abstract: A dehydrogenation reaction apparatus includes a dehydrogenation reactor having a reaction vessel that stores a chemical hydride; and a methane generator that converts carbon monoxide generated in the dehydrogenation reactor into methane.

Abstract: A dehydrogenation reaction apparatus is disclosed. An embodiment of the present disclosure provides a dehydrogenation reaction apparatus, including: a dehydrogenation reactor that includes a reaction vessel configured to store a chemical hydride, and at least one partition wall partitioning an inner space of the reaction vessel into a plurality of reaction chambers; and a buffer tank configured to temporarily store hydrogen generated in the dehydrogenation reactor and then supply the hydrogen to the fuel cell.

Abstract: A dehydrogenation reaction device includes: an acid aqueous solution storage unit including a first aqueous acid solution; a water storage unit including water; and a dehydrogenation reaction unit including a chemical hydride. The dehydrogenation reaction unit receives a second aqueous acid solution in which the first aqueous acid solution and water are mixed, and further reacts the chemical hydride and the second aqueous acid solution to generate hydrogen.

Abstract: A method for repairing a damaged area of a stealth composite structure having a stealth function using a scarf patch includes the steps of diagnosing the damaged area; deriving a repair area including the diagnosed damaged area; processing the scarf patch according to the derived repair area; machining a patch hole according to the derived repair area to remove the damaged area; and coupling the scarf patch to the patch hole so that an inner wall of the patch hole and a side surface of the scarf patch face.

Abstract: According to one embodiment of the present invention, there is provided a hydrogen extraction reactor, comprising a chamber including an inner space; a reaction unit which is provided to pass through the inside of the chamber and where an endothermic reaction for hydrogen extraction occurs; a heating unit which is provided to be spaced apart from the reaction unit inside the chamber and transfers heat to the inside of the chamber; and a heat transfer material which is provided between the reaction unit and the heating unit in the chamber, wherein the heat transfer material undergoes a phase transition between a gas phase and a liquid phase according to the entry and exit of heat from the heating unit or the reaction unit.

Abstract: A semiconductor device is provided. The semiconductor device comprises a first wiring structure which includes a first material, and has a first width on a lowest surface in a first direction and a second wiring structure which includes a second material, is spaced apart from the first wiring structure in the first direction, and has a second width smaller than the first width on a lowest surface in the first direction, wherein a highest surface of the first wiring structure has a third width smaller than the first width in the first direction, and a highest surface of the second wiring structure has a fourth width smaller than the second width in the first direction.

Abstract: A compound according to Formula (I) or a pharmaceutically acceptable salt thereof: is provided. X1 is N or C-Y; Y is H, halogen, NH2, OH, SH, alkyl, aryl, alkoxy, or aryloxy; A is O, NH, S, Se, or CH2, B is X2 is N or CH; and Z is NH, CH2, S, O, or Se.

Abstract: A separator for an electrochemical device, including: a porous polymer substrate; and a porous coating layer formed on at least one surface of the porous polymer substrate and containing a plurality of microcapsules and a binder polymer positioned on the whole or a part of the surface of the microcapsules to connect and fix the microcapsules with one another, wherein the microcapsules include metal hydroxide particles, and capsule coating layer surrounding each surface of the metal hydroxide particles. An electrochemical device including the separator, and the microcapsules are also provided. The microcapsules and separator show excellent flame resistance and can reduce degradation of battery performance caused by water adsorbability of the plurality of a metal hydroxide particle.

Abstract: Provided are a data reduction method and a data processing device. The data processing device includes a memory configured to store target data expressed as a vector matrix and instructions for performing control over data reduction and a processor configured to determine low-rank matrices W1 and W2 from which a target parameter matrix W is constructable. The target parameter matrix W is constructed as the Hadamard product between the low-rank matrices W1 and W2.

Abstract: Various embodiments relate to an electromagnetic wave absorber having a honeycomb sandwich structure, which is capable of absorbing broadband electromagnetic waves using electromagnetic properties of a metal-coated dielectric fiber, may comprise: at least two honeycomb core layers in each of which hexagonal units formed of a material comprising the metal-coated dielectric fiber are continuously arranged; and skin layers which are disposed on top surfaces and bottom surfaces of the at least two honeycomb core layers and each include a bottom layer, a top layer, and an intermediate layer. Various other embodiments are possible.

Abstract: A vehicle door handle assembly may include a handle housing disposed inside a door panel; a slider slidably mounted in the handle housing to be movable between a first position and a second position of the handle housing; a handle member pivotally connected to the slider through a connecting arm, and configured of being movable between a rest position and an actuating position with respect to the door panel; and an inertia locking mechanism including a blocking lever pivotally mounted to the handle housing, and a weight mounted on the blocking lever, wherein the inertia locking mechanism may prevent the handle member from moving to the actuating position by an unwanted force caused by the collision/impact of the vehicle.

Abstract: A flying object according to the present invention has been developed to have a plurality of rotor blades or jet engines, and to reduce the risk of a crash even if any one of the rotor blades or jet engines is damaged. The flying object comprises: a flying fuselage; a plate-shaped protection member having a plurality of through-holes formed on the same circumference thereof; a driving means arranged in each of the through-holes; and a tilting means for tilting each of the driving means, or a rotating means for rotating the protection member around a shaft member, wherein the diameter of the protection member, the interval between the rotational axes of the rotor blades facing each other, the length of the shaft member, and the length of the flying fuselage have a predetermined ratio.

Abstract: The present invention relates to superabsorbent polymer and a method for preparing the same. The present invention can provide a superabsorbent polymer in which a hydrophobic material having an HLB of 0-6 and a surface cross-linking agent are mixed into a base resin prepared in the presence of water dispersible silica, thereby having improved rewetting characteristics and permeability through surface-modification of the base resin.

Abstract: Provided is a simulation apparatus. The simulation apparatus may include an evacuation unit configured to simulate evacuation routes for occupants who are in a building when the building is on fire.