Abstract: An antenna device according to embodiments includes a dielectric layer having a central portion and a peripheral portion, a first antenna unit disposed on a top surface of the dielectric layer and including a first radiator providing a vertical radiation from the top surface of the dielectric layer, and a second antenna unit spaced apart from the first antenna unit on a plan view and comprising a second radiator providing an omni-directional radiation.

Abstract: The present invention relates to a cutting tool composed of a hard base material, such as cemented carbide, cermet, ceramic, and cubic boron nitride, and a hard coating film formed on the hard base material. A hard coating film for a cutting tool according to the present invention is formed in a multi-layered structure on a base material of a cutting tool, wherein the hard coating film includes one or more layers of a coating film made of an oxide and one or more layers of a coating film made of a nitride, and is characterized in that the O/(O+N) ratio in an edge center of the cutting tool is lower than the O/(O+N) ratio in a region 100 ?m or further away from the edge center in the entire hard coating film.

Abstract: Hydraulic fracturing pumps at a well pad comprising multiple wells can be separated into brine pumps and slurry pumps. A split stream barrier separates the brine pumps from the slurry pumps. At least one slurry barrier separates a first slurry pump and a second slurry pump. The split stream barrier and the slurry barrier allow maintenance to be performed on the first slurry pump while the second slurry pump and the brine pumps continue to operate.

Abstract: The present disclosure relates to a monomer composition for synthesizing recycled plastic that contains a high-purity aromatic diol compound recovered through recycling by chemical decomposition of a polycarbonate-based resin, a method for preparing the same, and a recycled plastic and molded product using the same.

Abstract: A strain of Paenibacillus sp. for fermenting wheat bran to synthesize an extracellular polysaccharide is disclosed. A weight-average molecular weight of the extracellular polysaccharide synthesized by the strain is 300,800 to 451,200 daltons, and the extracellular polysaccharide is an acidic heteropolysaccharide composed of glucuronic acid, glucose and fucose in a molar ratio of (1.55 to 1.60):1:(1.63 to 1.72); a backbone of the extracellular polysaccharide is composed of a 1,3-linked glucose residue, a 1,3-linked fucose residue, a 1,3,4-linked fucose residue and a 1,4-linked glucuronic acid residue, a branch point is located at a 0-4 position of the 1,3,4-linked fucose residue, and a branch chain is composed of terminally linked glucuronic acid residues, and the extracellular polysaccharide is composed of a repeating unit shown in Formula I. The extracellular polysaccharide has a certain immunomodulatory effect, and has a good application prospect in food, medicine and related fields.

Abstract: The present disclosure relates to a monomer composition for synthesizing recycled plastic that contains a high-purity aromatic diol compound recovered through recycling by chemical decomposition of a polycarbonate-based resin, a method for preparing the same, and a recycled plastic and molded product using the same.

Abstract: A vehicle lamp includes a first optical unit that irradiates light for forming a first beam pattern; a second optical unit that irradiates light for forming a second beam pattern and is disposed on one side of the first optical unit in a left-right direction; and a lens unit disposed in front of the first optical unit and the second optical unit to allow the light irradiated from at least one of the first optical unit or the second optical unit to pass through the lens unit to form at least one of the first beam pattern or the second beam pattern. The lens unit includes a first lens module corresponding to the first optical unit and a second lens module corresponding to the second optical unit, and the first lens module and the second lens module are integrally formed with one another.

Abstract: The present disclosure relates to a monomer composition for synthesizing recycled plastic which contains a high-purity aromatic diol compound recovered through recycling by chemical decomposition of a polycarbonate-based resin, a method for preparing the same, and a recycled plastic, and molded product using the same.

Abstract: The present disclosure relates to a monomer composition for synthesizing recycled plastic that contains a high-purity aromatic diol compound recovered through recycling by chemical decomposition of a polycarbonate-based resin, a method for preparing the same, and a recycled plastic and molded product using the same. Also, the present disclosure relates to a monomer composition for synthesizing recycled plastic that contains a by-product with a high added value recovered through recycling by chemical decomposition of a polycarbonate-based resin, a method for preparing the same, and a recycled plastic and molded product using the same.

Abstract: A reinforcing structure for suspension, includes: a spring seat coupled to a torsion beam and a trailing arm, and configured for supporting a spring; and a shock absorber bracket coupled to the spring seat and the trailing arm, and configured for supporting a shock absorber for damping vibrations of the spring, wherein the shock absorber bracket includes, a side coupling portion coupled to the trailing arm, wherein the side coupling portion is coupled to a side surface of the trailing arm in a width direction (Y) of a vehicle body in a state of being inclined at a predetermined angle with respect to each of a longitudinal direction (X) and a height direction (Z) of the vehicle body.

Abstract: A heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device comprising the same, and the heterocyclic compound providing improved efficiency, low driving voltage, and improved lifetime characteristics of the organic light emitting device.

Abstract: Provided are a method of detecting chromosomal aneuploidy of a targeted fetal chromosome, and a computer-readable medium having recorded thereon a program to be applied to performing the method. According to the present disclosure, fetal chromosomal aneuploidy may be non-invasively and prenatally diagnosed with excellent sensitivity and specificity.

Abstract: A method of preparing a quantum dot nanoparticle is disclosed. The method includes the step of reacting one or more cation precursors including one or more of Groups 12 and 13 elements with one or more anion precursors including one or more of Group 15 elements to prepare a quantum dot nanoparticle, wherein the reaction of the cation precursors and the anion precursors is carried out while supplying a compound represented by Chemical Formula 1. A quantum dot nanoparticle prepared by the preparation method, a quantum dot nanoparticle having a core-shell structure containing the quantum dot nanoparticle as a core, and a light emitting element comprising the quantum dot nanoparticle having a core-shell structure are also disclosed.

Abstract: A novel heterocyclic compound of Chemical Formula 1 and an organic light emitting device including the same. wherein one of Ar1 to Ar3 is of the following Chemical Formula 2, and one of Ar4 to Ar7 is a substituted or unsubstituted dibenzofuran; or a substituted or unsubstituted dibenzothiophene, the rest being hydrogen.

Abstract: In an embodiment an apparatus includes a path generator provided in a vehicle, wherein the path generator is configured to generate, based on a minimum turning radius of the vehicle, a default U-turn path and to generate a final U-turn path based on a path following control reference point of the vehicle which is based on the generated default U-turn path, and a controller configured to control autonomous driving of the vehicle to follow the generated final U-turn path.

Abstract: A method and system for providing secure data communication between two or more user terminals in a communication network is proposed. The method may include receiving, from a first user terminal, a first instruction set configured to request that a private account be converted into a group account, the private account owned by a user of the first user terminal. The method may also include generating the group account jointly owned by at least the user of the first user terminal and a user of a second user terminal. The method may also include controlling a first database to store a second information set relating to the group account, and generating a second virtual database different from the first database. The method may also include copying the second information set stored in the first database and recording the copied second information set in the second virtual database.

Abstract: A user terminal including a graphical user interface (GUI) for providing secure data communication with a server in a communication network is proposed. The user terminal may include a GUI configured to receive one or more user inputs and display data received from the server. The GUI may include a first screen configured to display a first instruction set for converting a private account to a group account and a second screen configured to display a group account information set received from the server. The user terminal may cause the server to generate the group account, control a first database of the server to store a second information set relating to the group account, generate a second virtual database of the server different from the first database, and copy the second information set stored in the first database and record the copied second information set in the second virtual database.

Abstract: A vehicle lamp for forming a predetermined beam pattern using a plurality of lamp modules is provided. Each of the lamp modules includes a light source unit that generates light and includes a plurality of light source chips; an optical path adjustment unit that guides a path of the light irradiated from the light source unit; and an optical unit that transmits the light guided by the optical path adjustment unit to form a beam pattern including at least one light irradiation pattern formed by at least one of the plurality of light source chips. In particular, the plurality of light source chips are arranged in a left-right direction.

Abstract: An embodiment apparatus for generating a U-turn path of a vehicle includes a path generator provided in the vehicle and configured to determine a deflection direction and a deflection distance to avoid a collision during a U-turn process, the deflection direction and the deflection distance being based on a minimum turning radius according to a specific reference point of the vehicle and to generate the U-turn path in which the deflection direction and the deflection distance are reflected, and a controller configured to control autonomous driving of the vehicle to follow the generated U-turn path.

Abstract: A compound of the following Chemical Formula 1, and an organic light emitting device including the same.