Abstract: A preparation method according to the present invention makes it possible to industrially produce large amounts of highly pure optically active tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate in high yield by use of commercially available reagents and solvents. In addition, the use of novel intermediates according to the present invention makes it possible to produce highly pure optically active tert-butyl 3-methyl-4-oxopiperidine-1-carboxylate in high yield.

Abstract: Lighting module disclosed in an embodiment of the invention, a substrate; a plurality of light emitting devices disposed on the substrate; a first reflective layer disposed on the substrate; a resin layer disposed on the first reflective layer and the light emitting device; and a second reflective layer disposed on the resin layer, wherein the resin layer is a front side surface on which light generated from the plurality of light emitting devices is emitted, a rear side surface facing the front side surface, and first and second side surfaces connecting the front side surface and the rear side surface with each other.

Abstract: A vacuum cleaner is disclosed. The vacuum cleaner comprises: a suction nozzle including a rotating cleaner located in front of a suction port; a cleaning main body provided with a first motor that generates a suction force; and a distance sensor coupled to the suction nozzle. The distance sensor detects a distance from a wall surface located in front of the suction nozzle, and when the distance (distance value) is less than or equal to a reference value, the rotation speed of the first motor is increased. Accordingly, when the suction nozzle touches the wall surface and cannot move forward, the suction force is momentarily increased such that foreign substances such as dust can be effectively sucked in from the edge of the wall surface, and effective use of a battery can be achieved.

Abstract: A display module includes a window including a base substrate and a bezel pattern overlapping the base substrate in a plan view, and a display panel. The bezel pattern includes a first bezel pattern extending along an edge of the base substrate, and a second bezel pattern which extends from the first bezel pattern and of which at least a portion defines a transmission area. The display panel includes a glass substrate, an encapsulation substrate on the glass substrate, a sealing member coupling the glass substrate and the encapsulation substrate and overlapping the first bezel pattern in the plan view, a circuit element layer disposed on the glass substrate and including a transistor, and a display element layer disposed on the circuit element layer and including light emitting elements. The display element layer exposes a portion of a layer disposed thereunder, which corresponds to the transmission area.

Abstract: A vacuum cleaner includes a connection pipe, a cleaner body, a suction nozzle having a first suction port, a movable body, a first rotating body, and a second rotating body. The movable body is movably coupled to the connection pipe, and the first rotating body and the second rotating body are rotatably coupled to the movable body. According to the disclosed vacuum cleaner, in a state in which the connection pipe is separated from the suction nozzle, the first rotating body and the second rotating body may form a second suction port, and may form a nozzle other than the suction nozzle.

Abstract: A foldable seat apparatus for a multi-purpose vehicle is provided. The apparatus includes a seat unit composed of a seat cushion, and a seatback rotatably coupled to the seat cushion, and configured to rotate the seatback and formed to make a horizontal state with the seat cushion according to an operation of an operation lever, a headrest unit mounted on the seatback, and provided to be separable, a mounting guide unit fixed and coupled to the seat cushion; and a pillow mounting unit positioned to be latched to the mounting guide unit to be stored in the seat cushion, drawn out to the outside of the seat cushion by selectively being latch-released from the mounting guide unit in the horizontal state, and equipped with the headrest unit to guide the headrest unit to be switched to a set pillow mode.

Abstract: A method for providing a mutual-liking-based chat service is disclosed. A method by which a server provides a chat service, according to an embodiment of the present invention, may comprise the steps of: receiving mutual liking scores between users from user terminals; calculating a summed score for each of other users by summing a liking score which a first user has assigned to each of the other users and a liking score assigned from each of the other users, if a special chat room opening request of the first user among the users is received; selecting a second user corresponding to the highest score from among the summed scores; and opening a special chat room between the first user and the second user.

Abstract: A vacuum cleaner includes a cleaner body, a connection pipe including a first catching groove, and a suction nozzle. The suction nozzle includes a connection neck, a nozzle housing rotatably coupled to the connection neck, a first catching body rotatably coupled to the connection neck, and a first elastic body. The first catching body includes a first catching protrusion portion which is caught by the first catching groove. The suction nozzle includes a pressing portion and a first lever. The first lever includes a first end portion in contact with the pressing portion, and a second end portion configured to press the first catching body. According to the disclosed vacuum cleaner, the fastening between the suction nozzle and the connection pipe may be maintained or released according to the relative angle between the suction nozzle and the connection pipe.

Abstract: A lighting device disclosed in an embodiment of the invention includes a substrate; a plurality of light sources disposed on the substrate; a resin layer covering the light source on the substrate; a light blocking layer having an opening portion on the resin layer; and a lens plate disposed on the light blocking layer, wherein the lens plate includes a light transmitting portion and a convex portion arranged on one surface or the other surface of the light transmitting portion, and the total area of the opening portions is 50% or less of an area of an emission surface through which light is emitted through the resin layer, and the interval between the lens plate and the light blocking layer may be greater than the length of the opening portion.

Abstract: A desiccant replacing apparatus may include a supply-discharge member, a supply connection line connected to the supply-discharge member, an air conveyor coupled to the supply connection line, a discharge connection line connected to the supply-discharge member, and an air amplifier coupled to the discharge connection line. The supply-discharge member may include a housing providing an internal space, an injection line providing an injection path and penetrating the housing, an exhaust line providing an exhaust path connected to the internal space, and a filter in the internal space or the exhaust path. The supply connection line may be connected to the injection line, and the discharge connection line may be connected to the exhaust line.

Abstract: An embodiment relates to a lighting device.

Abstract: The present specification relates to a method comprising: (A) mixing a ferrite-based catalyst molded article with diluent material particles; and (B) adding the mixture to a catalyst reactor, and a method for preparing butadiene using the same.

Abstract: The present application relates to a filter having a photocatalyst attached thereto, which comprises: a substrate; and a photocatalyst bonded on the substrate, in which the photocatalyst has each photocatalyst bonded and combined by a polymer binder, and the substrate and the photocatalyst are bonded by a hydrophilic polymer binder.

Abstract: Proposed is a system for measuring a reduction in a weight of food waste, the system including a food waste disposal apparatus measuring a weight of food waste introduced and a reduction in the weight of the food waste and an amount of electric power consumed, a GL server collecting data on the reduction in the weight of the food waste and data on the amount of the consumed electric power and accumulating the collected data, and computing a total of reductions in the weight of the food waste and a total of amounts of the consumed electric power on the basis of the accumulated data on the reduction in the weight of the food waste and the accumulated data on the amount of the consumed electric power, and a public office server receiving the total of reductions and the total of amounts from the GL server.

Abstract: The present invention relates to a pharmaceutical composition for preventing or treating non-small cell lung cancer associated with a RON mutation, and to a method using the same. A pharmaceutical composition for preventing or treating cancer according to the present invention may be applied to patients with non-small cell lung cancer in which a RON mutation is present. In particular, the pharmaceutical composition may be usefully used as a precision medicine in the treatment of patients with non-small cell lung cancer which has resistance to cetuximab used in conventional cancer therapy and has the RON?155, RON?160, or RON?165 mutation.

Abstract: A lighting device according to an embodiment includes a sensor, a substrate disposed on the sensor and including an electrode pattern, a light source disposed on the substrate and electrically connected to the electrode pattern, a resin layer disposed on the substrate, and a reflective layer disposed between the substrate and the resin layer, and the substrate may include a first region overlapping the sensor in a first direction perpendicular to an upper surface of the substrate, a second region surrounding the first region, the light source may be disposed on the second region, the plurality of reflective pattern groups may be disposed on the first region, and the sensor may not overlap the light source and the electrode pattern in the first direction.

Abstract: Provided is a catalyst for oxidative dehydrogenation, a method of preparing the catalyst, and a method of performing oxidative dehydrogenation using the catalyst. The catalyst for oxidative dehydrogenation has improved durability and fillability by including a porous support coated with a metal oxide (AB2O4) according to Equation 1: X wt %+Y wt %=100 wt %,??<Equation 1> wherein X is a content of AB2O4 and is 5 or more and less than 30, and Y is a content of the porous support and is more than 70 and 95 or less, wherein the metal oxide exhibits activity during oxidative dehydrogenation. Therefore, when the catalyst is used in oxidative dehydrogenation of butene, the conversion rate of butene and the selectivity and yield of butadiene may be greatly improved.