Abstract: The present invention relates to a composition for forming a composite polymer film, a method for preparing the composition for forming a composite polymer film, a composite polymer film and a method for preparing the composite polymer film. The composition for forming a composite polymer film comprises: a fluorine-based polymer solution comprising a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the fluorine-based polymer solution. The method for preparing the composition for forming a composite polymer film comprises the steps of: preparing a fluorine-based polymer solution comprising a fluorine-based polymer; and dispersing polyvinylidene fluoride nanoparticles in the fluorine-based polymer solution. The composite polymer film comprises: a polymer matrix formed from a fluorine-based polymer; and polyvinylidene fluoride nanoparticles dispersed in the polymer matrix.

Abstract: One embodiment discloses a DC-DC converter which, in a solar-related energy storage system, cuts-off the over-discharging of a battery, and a control method thereof. Specifically, disclosed are a DC-DC converter which protects a battery by appropriately switching between a sleep mode which minimizes battery consumption by maintaining only minimized functions and a cut-off mode which prevents the battery from over-discharging by physically cutting off a circuit connected to the battery, and a control method thereof. Also, an embodiment discloses a DC-DC converter or reverse wiring protection device for between a solar panel and a battery.

Abstract: Embodiments of the current disclosure to provide a display device which can reduce the number of intersections of scan lines and data lines. According to an embodiment of the disclosure, a display device comprises: a substrate; scan lines extending along a first direction; data lines extending along a second direction that intersect the first direction; a first switching element; a first pixel electrode connected to a first source electrode of the first switching element; a second switching element; and a second pixel electrode connected to a second source electrode of the second switching element. The first pixel electrode and the second pixel electrode are disposed along the second direction, and a first source electrode and a first drain electrode of the first switching element extend along the second direction in an area overlapping a first active layer of the first switching element.

Abstract: Provided are an apparatus for providing a substrate processing liquid having an optimal structure in the correlation between securing internal agitation fluidity and recovery of sloshing, and a substrate processing system including the same. The apparatus for providing substrate processing liquid comprises a storage tank for storing substrate processing liquid, and a partition wall installed inside the storage tank and for dividing an internal space of the storage tank, wherein the apparatus is connected to a substrate processing apparatus for discharging the substrate processing liquid onto a substrate to provide the substrate processing liquid to the substrate processing apparatus, wherein the partition wall includes a plurality of holes formed passing through one surface and the other surface.

Abstract: A unit for supplying a substrate-treating liquid is provided with a first reservoir and a second reservoir between which a differential pressure is constantly maintained to establish a flow rate, along with a substrate-treating apparatus having the unit for supplying the substrate-treating liquid. The unit for supplying the substrate-treating liquid includes a supply reservoir module and a buffer reservoir module. The supply reservoir module includes a first reservoir for supplying the substrate-treating liquid to an inkjet head unit for jetting the substrate-treating liquid onto a substrate, and a second reservoir for recovering the substrate-treating liquid that remains unused in the inkjet head unit. The buffer reservoir module is configured to provide the substrate-treating liquid to the first reservoir. Differential pressure is constantly maintained between the first reservoir and the second reservoir.

Abstract: Provided are a substrate treating apparatus and a substrate treating method capable of preventing settling of a chemical without using a stirrer.

Abstract: Provided are a substrate treating liquid supply unit for constantly maintaining a liquid level of a nozzle of an inkjet head unit through real-time water level measurement, and a substrate treating apparatus including the same. The substrate treating liquid supply unit includes: a first reservoir connected to an inkjet head unit for jetting a substrate treating liquid onto a substrate and providing the substrate treating liquid to the inkjet head unit; a water level sensor measuring a water level of the substrate treating liquid stored in the first reservoir; and a pressure control module compensating for a pressure provided to the first reservoir based on an amount variation in the water level of the substrate treating liquid, wherein a liquid level of a nozzle of the inkjet head unit is constantly maintained.

Abstract: A fuel vapor gas purge system is provided. The system includes an ejector having an inlet pipe for intake of intake gas, an ejection pipe for ejection of the intake gas and vapor gas, and a suction pipe for suctioning the vapor gas. A first purge line is connected between the suction pipe of the ejector and a vapor gas outlet port of a canister and a second purge line is connected between the ejection pipe of the ejector and a connecting pipe near an outlet of a throttle valve. A branch line is connected between the inlet pipe of the ejector and a predetermined position of an intake gas line. Additionally, a first booster is installed in the branch line to supercharge the intake gas to the inlet pipe of the ejector.

Abstract: The present disclosure relates to a dual purge system for a vehicle, which varies a purging amount depending on a pressure condition of an intake manifold surge tank to realize desired purging efficiency suitable for a vehicle driving range. In the dual purge system, by desorbing fuel evaporation gas from all canisters in a state of engine negative pressure, a purging amount increases thereby improving fuel efficiency, and by desorbing the fuel evaporation gas from some canisters in a state of engine positive pressure, flow resistance of the gas is reduced in comparison with previous flow resistance thereby increasing desorption efficiency.

Abstract: A fuel injection control system may include a variable exhaust valve mechanism configured to primarily open an exhaust valve directly before an intake stroke in which an intake valve is opened and to secondarily open the exhaust valve during the intake stroke such that valve overlap occurs; an exhaust injector provided at an exhaust side to inject fuel; and a controller for controlling the exhaust injector such that fuel is injected through the exhaust injector before the exhaust valve is opened secondarily before or during the intake stroke.

Abstract: The present disclosure relates to a dual purge system for a vehicle, which varies a purging amount depending on a pressure condition of an intake manifold surge tank to realize desired purging efficiency suitable for a vehicle driving range. In the dual purge system, by desorbing fuel evaporation gas from all canisters in a state of engine negative pressure, a purging amount increases thereby improving fuel efficiency, and by desorbing the fuel evaporation gas from some canisters in a state of engine positive pressure, flow resistance of the gas is reduced in comparison with previous flow resistance thereby increasing desorption efficiency.

Abstract: A fuel injection control system may include a variable exhaust valve mechanism configured to primarily open an exhaust valve directly before an intake stroke in which an intake valve is opened and to secondarily open the exhaust valve during the intake stroke such that valve overlap occurs; an exhaust injector provided at an exhaust side to inject fuel; and a controller for controlling the exhaust injector such that fuel is injected through the exhaust injector before the exhaust valve is opened secondarily before or during the intake stroke.

Abstract: A fuel vapor gas purge system is provided. The system includes an ejector having an intake pipe for intake of intake gas, an ejection pipe for ejection of the intake gas and vapor gas, and a suction pipe for suctioning the vapor gas. A first purge line is connected between the suction pipe of the ejector and a vapor gas outlet port of a canister and a second purge line is connected between the ejection pipe of the ejector and a gas suction pipe at a front end of a throttle valve. An intake gas branch line is connected between the intake pipe of the ejector and a predetermined position of an intake gas line. Additionally, a first booster is installed in the intake gas branch line to supercharge the intake gas to the intake pipe of the ejector.

Abstract: A method for controlling combustion in a diesel engine includes: premixing ambient air, EGR gas and vaporized diesel fuel in a combustion chamber during an intake stroke of each cylinder of the diesel engine; and sequentially performing, by an injector, pilot injection, main injection, and post injection during a compression stroke occurs after the intake stroke.

Abstract: Provided is a smart pixel blind having aesthetics that may be felt by a user by including a plurality of pixels disposed in a two-dimensional array. In the smart pixel blind, driving devices are provided in the respective pixels, and when the user inputs a predetermined shape using a portable terminal, or the like, a main controller receives the input shape and controls the driving devices provided in the respective pixels to allow the input shape to be displayed.

Abstract: A piston of an engine has a bowl including: a top end that is a surface inclined toward a center of the piston from an edge portion of a top of the piston; a central projection protruding upward at a center of the piston; a recession extending outwardly from the central projection and inclined downward beneath the top end; and a neck connecting the recession and the top end to each other wherein a minimum diameter of the neck is within 62˜65% of a cylinder bore diameter, a maximum diameter of the recession is within 102˜105% of the minimum diameter of the neck, a maximum depth from the top of the piston to a deepest portion of the recession is within 10˜20% of the cylinder bore diameter, and a center of a radius of curvature of the neck is disposed within 2˜10% of the cylinder bore diameter.

Abstract: Provided is a smart pixel blind having aesthetics that may be felt by a user by including a plurality of pixels disposed in a two-dimensional array. In the smart pixel blind, driving devices are provided in the respective pixels, and when the user inputs a predetermined shape using a portable terminal, or the like, a main controller receives the input shape and controls the driving devices provided in the respective pixels to allow the input shape to be displayed.

Abstract: Provided are a pharmaceutical composition for preventing or treating low back pain, the pharmaceutical composition including adipose tissue-derived mesenchymal stem cells and a hyaluronic acid derivative solution, and a method of preparing the same. Mesenchymal stem cells capable of differentiating into chondrocytes are mixed with a hyaluronic acid derivative solution prepared by using controlled reaction conditions of hyaluronic acid and hyaluronic acid derivative, for use as a composition for the prevention or treatment of diseases and low back pain caused by a change in degenerative change in intervertebral discs.

Abstract: The present invention relates to a trypsin-free cell stamp system and a use thereof. According to the present invention, an increase in the passage number of stem cells can be prevented compared with conventional methods of isolating cells from a cell culture dish, while providing a support, which is an essential condition of cell growth, by introducing the trypsin-free cell stamp system, and cells can be continuously supplied for a polymer-based fiber support without an additional subculture process since the empty space of a cell culture dish is filled as times passes. In addition, the artificial effects on cells can be minimized since the cells migrate to a polymer-based nano/micro-fiber support without other external stimulation, and thus the potency of stem cells is increased, thereby inducing more effective differentiation, such that the present invention, as a cell therapeutic agent, can be utilized in general fields of regenerative medicine and tissue engineering.

Abstract: A container for culturing cells having nanostructures according to the present invention comprises a cell culture surface onto which adult stem cells are adhered so as to be proliferated and differentiated, wherein the cell culture surface comprises nanostructures placed thereon at regular intervals, the nanostructures comprise nano-pillars protruded from the cell culture surface, the width of the nano-pillars is 40-500 nm, and the height of the nano-pillars is 10 nm-1 ?m.