Abstract: Disclosed are a novel diamine compound, a polyimide precursor produced using the same, polyimide produced from the polyimide precursor, and a polyimide film manufactured using the polyimide. The novel diamine compound is represented by a following Chemical Formula 1: where in the Chemical Formula 1, each of R1 and R2 independently represents hydrogen, an alkyl group having 1 to 5 carbon atoms, or a trifluoromethyl group.

Abstract: A TSCH Orchestra based scheduling apparatus and method using a Sub-Ghz band, includes a preferred parent management module configured to perform storing of preferred parent information by managing preferred parent selection waiting time and managing preferred parent selection operation; a packet transceiver module configured to manage packet reception and packet transmission; and a slot management module configured to manage neighbor transmission slots, and manage reception slots and transmission slots. An operation of applying a sender-based (SB) method to a root device in an Orchestra receiver-based (RB) network is controlled, and a reception slot activation operation using an ACK of the root device, and local duplicate transmission slot avoidance and global duplicate transmission slot avoidance operations are controlled.

Abstract: The present invention relates to a liquid butadiene compound with both ends modified, a method for preparing same, and a use thereof. More specifically, the present invention provides a liquid butadiene rubber compound with both ends modified that is synthesized using a chain transfer agent having a triethoxysily functional group and a tetrasulfide functional group, and a 1,3-butadiene monomer, a rubber composition for a tire comprising same, a method for preparing same, and the like. According to the present invention, by introducing a silica-friendly functional group at both ends of the chain, hysteresis or the like caused by the chain ends of an existing liquid butadiene rubber is controlled, and thus, various performances affecting fuel efficiency characteristics can be improved.

Abstract: The present invention relates to an additive for an epoxy adhesive and a composition for a structural epoxy adhesive including the same. The additive for the epoxy adhesive according to the present invention may have excellent dispersibility and mechanical properties, and thus may improve adhesion strength of the structural epoxy adhesive.

Abstract: An apparatus for detecting defects using deep learning-based surface inspection, includes: a normal image-based unsupervised training unit configured to, based on a normal image, train a reconstructive sub-network which allows an original image to be obtained through an image with noise inserted, and a discriminative sub-network which allows detection of a noise area; and a defective image-based online supervised training unit configured to, based on a defective image, train a reconstructive sub-network which inputs an inspection target image to generate a flaw removal image, and a discriminative sub-network which extracts a flaw area image by comparing a difference between the inspection target image and the flaw removal image.

Abstract: Disclosed is an ultrasonic wave transmission structure which is provided on a path of ultrasonic waves to amplify incident ultrasonic waves. The ultrasonic wave transmission structure includes: multiple rings each provided with a body portion having a different radius from other body portions and spaced apart from another body portion adjacent thereto and a slit disposed between adjacent body portions; and a membrane disposed in the multiple rings, wherein the mass of the membrane is adjusted to vary a resonant frequency in multiple sub-membrane regions.

Abstract: Disclosed are a nanoenergetic material composite-based solid propellant, a method of preparing the same, and a projectile using the same. The propellant includes: potassium nitrate-sucrose (KNSU) composite powder; and nanoenergetic material (nEM) composite powder in a solid powder form mixed with the KNSU composite powder to prepare a KNSU/nEM propellant. The method includes: preparing KNSU composite powder; preparing nEM composite powder; and preparing a KNSU/nEM propellant by mixing the KNSU composite powder and the nEM composite powder in a solid powder form. The projectile includes: a clay block; a clay nozzle responsible for releasing the pressure generated by explosion of a propellant; and a propellant lamination area disposed between the clay block and the clay nozzle. Upon ignition of the KNSU/nEM propellant, the nEM composite powder increases the combustion rate and combustion temperature of a potassium nitrate-sucrose (KNSU) propellant.

Abstract: A holographic-based directional sound device is provided, the device including: a sound wave generating means generating a sound wave; and a flat plate configured to have the sound wave generating means installed at the center so as to radiate the sound wave to the outside through a surface, and to be composed of a plurality of unit cells, in which at least one groove is formed on a surface of the unit cell, and a radiation angle of the sound wave is determined according to a depth of the groove with respect to the unit cell, wherein the depth of the groove is determined by an individual surface admittance calculated by a cosine function or a sine function of the sum of a first value and a second value on the basis of a preset radiation angle of the sound wave and a preset frequency of the sound wave.

Abstract: A preparing method for a cathode active material precursor for a lithium-ion batteries with a tailor-made concentration gradient, includes: an aqueous metal ion solution preparation step for preparing an aqueous metal ion solution A for center and an aqueous metal ion solution B for surface having different compositions, concentrations, and volumes; a mixed metal ion solution formation step for gradually mixing the aqueous metal ion solution B for surface to the aqueous metal ion solution A for center; a control step for setting a composition and a concentration gradient of the mixed metal ion solution and controlling the same in real time, before moving the mixed metal ion solution to a co-precipitation reactor; and a co-precipitation reaction step for performing a co-precipitation reaction according to conditions set in the control step.

Abstract: An SNN circuit structure based on thin-film transistors, includes: a synaptic pass-transistor unit in which a synaptic transistor circuit unit in which N thin-film transistors are connected in parallel is connected to a common pass-transistor load to maintain an output voltage range of the synaptic transistor circuit unit constant; an output circuit unit configured to output a fire signal according to an output signal output from the synaptic pass-transistor unit; and a backpropagation generating transistor unit configured to provide a backpropagation signal transmitted to the synaptic transistor circuit unit with the fire signal output from the output circuit unit as an input.

Abstract: A storage device includes at least one processor. The at least one processor is configured to acquire a surface scan image in an image tile format of a set size, bind a set number of image tiles in one segment, and store a plurality of segments as files, respectively, instead of storing the image tiles without modification.

Abstract: A blockchain-based platform system for interworking with one machine-to-machine (oneM2M) and lightweight machine-to-machine (LWM2M) and a method of implementing a blockchain-based platform are provided. The blockchain-based platform system for interworking with oneM2M and LWM2M includes a hyperledger fabric network configured to validate chaincode called in association with a first client application and generate an event in association with the validated chaincode, and a fabric bridge gateway configured to perform interworking with an LWM2M protocol and a oneM2M platform by transmitting a request or a response corresponding to the event to a second client application.

Abstract: The present invention relates to a pharmaceutical composition for combined administration of melatonin and prostaglandin E2 (PGE2) for the treatment of intestinal epithelial injury diseases, and it is confirmed that when intestinal epithelial organoids are treated in combination with melatonin and PGE2, the expression of revival stem cell markers increases more than when the two substances are treated alone, and therefore it can be usefully used as a composition for preventing, treating or improving intestinal epithelial injury diseases.

Abstract: A system and a method including a receiving module configured to receive medical data from a medical institution server, a data extraction module configured to extract text data for a body region from the medical data, an image calling module configured to call or generate image data modeling from a position and a shape of the body region by using extracted text data, an object calling module configured to call the image data as an object, and a code editing module configured to write or edit a programming code for the body region corresponding to a called object according to a received input.

Abstract: An apparatus for manufacturing an all-solid-state battery includes: a mold unit which includes a first hole extending vertically so as to have a shape and a width identical with a shape and a width of the all-solid-state battery, and a second hole extending horizontally so as to horizontally communicate with the first hole; a first pressing unit which includes a first protrusion member corresponding to the first hole, which is coupled with an upper part of the mold unit, and which presses downwards raw materials of the all-solid-state battery filling the first hole, and a second pressing unit which includes a second protrusion member corresponding to the first hole, which is coupled with a lower part of the mold unit, and which presses upwards the raw materials of the all-solid-state battery filling the first hole.

Abstract: The present invention relates to a photocurable hemostatic composition and, specifically, to a photocurable liquid hemostatic composition containing a hyaluronic acid-based photocrosslinkable compound and a photoinitiator as active ingredients, and to a hemostatic agent of a film or sponge formulation freeze-dried from the composition, wherein, by increasing the degree of substitution of a photocrosslinkable functional group, the composition can quickly form a gel or a film adhesive layer within a few seconds during light radiation, and the resulting gel remains in a body more stably for a long time, thus enhancing hemostasis and tissue regeneration effects.

Abstract: Disclosed is an output matching network including a first transmission line and a second transmission line each having one end connected to a respective balanced port of a pair of balanced ports; a third transmission line having one end connected to an unbalanced port; and a fourth transmission line. A first capacitor is connected to the unbalanced port and a load. A second capacitor is connected to an end of the fourth transmission line. The third and fourth transmission lines are coupled to the first and second transmission lines.

Abstract: Disclosed is an anti-inflammatory composition containing N-benzyl-N-methyldecan-1-amine or a derivative thereof as an active ingredient. The anti-inflammatory composition contains a compound represented by a following Chemical Formula 1 as an active ingredient. wherein in the Chemical Formula 1, R1 represents hydrogen, fluorine, an alkyl group having 1 to 5 carbon atoms, or an alkoxy group having 1 to 5 carbon atoms, each of R2 and R3 independently represents an alkyl group having 1 to 5 carbon atoms.

Abstract: Provided is a composition for emulsion polymerization which includes: an asymmetric compound represented by the following Chemical Formula 1; an aromatic vinyl monomer; and a conjugated diene-based monomer, and a rubber compound prepared from the same. (in Chemical Formula 1, X is a C1-C10 alkoxy group.

Abstract: There are provided a large-area single-crystal silver thin-film structure using a single-crystal copper thin-film buffer layer, and a method for manufacturing same. The large-area single-crystal silver thin-film structure includes a transparent substrate; a single-crystal copper thin-film buffer layer formed by deposition on the transparent substrate; and a single-crystal silver thin-film layer deposited on the single-crystal copper thin-film buffer layer and having a certain directionality.