Abstract: An embodiment variable valve device of a vehicle intake system includes a variable valve housing fixed to a housing of an air cleaner and including a valve passage penetrating the air cleaner, a variable valve flap rotatably coupled to the variable valve housing and configured to perform opening and closing operations based on an intake negative pressure of an engine to open and close the valve passage, and a cam protrusion and a leaf spring provided on the variable valve flap and the variable valve housing, respectively, wherein the cam protrusion and the leaf spring are in contact with each other.

Abstract: A flame retardant separator for secondary batteries, and more particularly, a flame retardant separator for secondary batteries comprising or coated with a metal hydroxide having a low Gibbs free energy among polymorphs of a metal hydroxide used as an inorganic flame retardant.

Abstract: An embodiment variable valve device of a vehicle intake system includes a variable valve housing fixed to a housing of an air cleaner and including a valve passage penetrating the air cleaner, a variable valve flap rotatably coupled to the variable valve housing and configured to perform opening and closing operations based on an intake negative pressure of an engine to open and close the valve passage, and a cam protrusion and a leaf spring provided on the variable valve flap and the variable valve housing, respectively, wherein the cam protrusion and the leaf spring are in contact with each other.

Abstract: The present invention relates to a chemically-amplified-type negative photoresist composition, and more particularly to a chemically-amplified-type negative photoresist composition suitable for use in a semiconductor process, which includes a specific organic acid additive, thereby improving a processing margin in a short-wavelength exposure light source compared to conventional negative photoresists.

Abstract: The present invention relates to an etching composition for selectively etching a silicon nitride layer. The etching composition includes an inorganic acid, an epoxy-based silicon compound, and water. The etching composition of the present invention selectively removes a silicon nitride layer while minimizing damage to an underlying metal layer and preventing a silicon oxide layer from being etched.

Abstract: Disclosed in the present invention is a floating hologram system. The floating hologram system includes a diffuser configured to form a projection image using light beams transmitted from an image transmitter and diffuse the formed image, and a holographic optical element on which the image diffused from the diffuser is incident and which generates a virtual image floating at a position a predetermined distance therefrom and has a convex lens characteristic. A distance between the diffuser and the holographic optical element is determined based on a focal length of the holographic optical element and a distance from the holographic optical element to the virtual image.

Abstract: An apparatus for reducing flow noise of an air intake system of a vehicle is provided as an assembly of a body member and a cover member. An acoustic metamaterial unit includes a chamber having a predetermined size, an inlet flow path, and an outlet flow path provided therein and is connected to a pipe of an air intake system. The apparatus advantageously reduces or removes high-frequency flow noise occurring in a turbocharger by using the acoustic metamaterial unit. The size and shape of the acoustic metamaterial unit is standardized such that the acoustic metamaterial unit is used compatibly regardless of the type of vehicles, which can make it possible to advantageously reduce costs and improve salability.

Abstract: An automation method of an artificial intelligence (AI)-based diagnostic technology for equipment application includes receiving one or more pieces of data among vibration data, noise data, and controller area network (CAN) data, a data input processing operation of trimming the input data, an operation of extracting features from the trimmed data, setting a setting value of a hyper-parameter with respect to the one or more pieces of data thereamong, and generating a total of N models to include both of machine learning (ML) and deep learning (DL) as N individual models and generating ensemble prediction model structures for the N individual models. As a parameter updating is being proceeded due to the hyper-parameter so as to minimize values of cost functions of the N individual models, a reward for model accuracy performance is optimized and the ensemble prediction model structures of the N individual models change.

Abstract: Proposed are a processing solution for reducing the incidence of pattern collapse and the number of defects in a photoresist pattern including polyhydroxystyrene using extreme ultraviolet rays as an exposure source, and a method of forming a pattern using the same. The processing solution for reducing the incidence of photoresist pattern collapse and the number of defects includes 0.0001 to 1 wt % of an alkaline material, 0.0001 to 1 wt % of an anionic surfactant, and 98 to 99.9998 wt % of water.

Abstract: Disclosed is a method of forming a fine silicon pattern with a high aspect ratio for fabrication of a semiconductor device. The method includes a cleaning process of removing organic residue or reside originating in fumes using a cleaning solution, thereby enabling formation of a desired pattern while preventing the pattern from being lifted. Thus, the present disclosure enables formation of a fine pattern by using a novel cleaning method.

Abstract: An apparatus of amplifying sound waves may include a metamaterial structure having a metamaterial inside thereof, an inlet through which air flows into the metamaterial structure, and a penetration portion formed to penetrate a portion of one side of the metamaterial structure, a membrane member coupled to the penetration portion, and a resonance member surrounding the membrane member and coupled to the metamaterial structure and including a space inside thereof and a discharge port fluidically communicating with an outside thereof and the internal space.

Abstract: A process liquid composition for moving a lifting defect level of a photoresist pattern having hydrophobicity represented by a contact angle of 75° or larger of a photoresist surface with respect to water in a photoresist patterning process, and a preparation method thereof are proposed. The process liquid composition includes 0.00001% to 0.1% by weight of a fluorine-based surfactant, 0.00001% to 1.0% by weight of a triol derivative, a tetraol derivative, or a mixture thereof, and the remaining proportion of water. The process liquid composition has a surface tension of 45 mN/m or less and a contact angle of 65° or smaller.

Abstract: A separator for secondary batteries that allows the amount of a dispersing resin that is used and the amount of a dispersant that is used to be reduced in order to prevent an increase in resistance after the separator is coated, which occurs in the case in which a large amount of the dispersing resin is used in order to disperse inorganic matter, and an electrochemical device having the same applied thereto. The amount of a dispersing resin is reduced, whereby it is possible to prevent an increase in resistance after a porous separator is coated, a dispersing resin having a specific weight average molecular weight is mixed, whereby physical properties and dispersivity are improved, and the use of an expensive dispersant is excluded, whereby processing costs are reduced.

Abstract: A method and a device for registering three-dimensional data are disclosed.

Abstract: A processing solution composition for reducing collapse of a polyhydroxystyrene-containing photoresist pattern defined by an extreme-ultraviolet exposure source and a method of forming a pattern using the same are proposed. The processing solution composition includes 0.0001 to 1 wt % of a nonionic surfactant having an HLB (Hydrophilic-Lipophilic Balance) value of 9 to 16, 0.0001 to 1 wt % of an alkaline material selected from the group consisting of tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, and mixtures thereof, and 98 to 99.9998 wt % of water, and is effective at reducing the collapse of a polyhydroxystyrene-containing photoresist pattern defined by an extreme-ultraviolet exposure source.

Abstract: A foldable circular polarizing plate includes a polarizer and a foldable compensation film disposed on one surface of the polarizer, wherein in-plane retardations of the liquid crystal layer at 450 nm, 550 nm, and 650 nm wavelengths satisfy Relationship Equations 1 or 2, the compensation film is configured to absorb light in a wavelength region of less than or equal to 420 nm, and a reflection color in a CIE-Lab color coordinate system satisfies ?a*b*?5.0 and a foldable organic light emitting diode display including the same.

Abstract: Disclosed is a free-standing porous separator including a plurality of inorganic particles and a binder polymer positioned on the whole or a part of the surface of the inorganic particles to connect the inorganic particles with one another and fix them, wherein the binder polymer comprises a polyvinylidene fluoride (PVdF)-based binder polymer modified with an ester (COO)- or carboxyl (COOH)-containing monomer. An electrochemical device including the free-standing porous separator is also disclosed. It is possible to provide a porous separator which has a reduced dimensional change in an electrolyte, while showing improved tensile strength and/or elongation at the same time.

Abstract: An anchor for an embolic coil, and an embolic coil including the same are provided. The anchor for an embolic coil includes a hollow main body and a central shaft arranged in the hollow main body, wherein the hollow main body is made of a braided composite filament including a polymer filament and a first alloy filament, and the central shaft includes a second alloy filament that is a material different from the first alloy filament.

Abstract: Proposed is a process liquid composition for improving a lifting defect level of a photoresist pattern containing a surfactant and for reducing the number of defects of the photoresist pattern, the composition containing a surfactant and having a surface tension of 40 mN/m or less and a contact angle of 60° or smaller in the photoresist pattern having hydrophobicity represented by a contact angle of 70° or greater of water with respect to a photoresist surface in a photoresist pattern process.

Abstract: Disclosed are a device for calculating flight information of a ball and a method of calculating flight information of a ball that are capable of rapidly calculating the motion parameters of a ball and a golf club using an infrared sensing type device or a camera sensing type device and very rapidly calculating spin information of the ball corresponding to the calculated motion parameters with high accuracy through a simple calculation with reference to database type information about the calculated motion parameters, and a computing-device-readable recording medium having the method recorded therein.