Abstract: The present disclosure relates to a heat exchange system which is capable of saving energy consumed in a whole process by exchanging heat of different streams from each other, included in a continuous preparation system of a diester-based composition.

Abstract: A circuit board according to an embodiment includes a first insulating layer; a first circuit pattern disposed on the first insulating layer; and a second insulating layer disposed on the first insulating layer and including a cavity, wherein an upper surface of the first insulating layer includes a first region that does not vertically overlap the cavity; a second region vertically overlapping the cavity; and a boundary region between the first region and the second region, the first circuit pattern includes a first-first circuit pattern disposed on the boundary region of the first insulating layer, the first-first circuit pattern includes a first portion that does not vertically overlap the cavity; and a second portion connected to the first portion and vertically overlapping the cavity, and a thickness of the first portion of the first-first circuit pattern is different from a thickness of the second portion of the first-first circuit pattern.

Abstract: A substrate treatment apparatus is provided. The substrate treatment apparatus includes a substrate support part provided with a seating surface and configured to support a substrate, a guide ring annularly disposed along an edge of the substrate support part to surround the substrate, and a centering part provided inside the guide ring and configured to center the substrate by moving in a direction parallel to the seating surface to pressurize the edge of the substrate.

Abstract: A printed circuit board according to an embodiment comprises: a first insulation layer; a first circuit pattern disposed on one surface of the first insulation layer and including a pad; and a second insulation layer disposed on one surface of the first insulation layer and including a cavity exposing the pad, wherein the first circuit pattern includes a 1-1 metal layer disposed on one surface of the first insulation layer, and a 1-2 metal layer disposed on one surface of the 1-1 metal layer, wherein the area of the 1-1 metal layer is greater than the area of the 1-2 metal layer, and at least a portion of a side surface of the 1-1 metal layer is exposed through the cavity.

Abstract: Provided is a method of preparing a diester-based material, more particularly, a method of preparing a diester-based material, which is carried out by a continuous preparation process of a diester-based material including a reaction part in which a total of n reaction units from a first reaction unit to an nth reaction unit are connected in series, the reaction unit including a reactor which esterifies dicarboxylic acid and alcohol, including: esterifying dicarboxylic acid and alcohol in a reactor of the first reaction unit to produce a reaction product, and supplying a lower discharge stream including the reaction product to a reaction unit at a rear end through a lower discharge line; and supplying a liquid material through a liquid supply line connected to a lower discharge line of the reactor of the first reaction unit.

Abstract: The present invention relates to a method of manufacturing a diester-based compound, and, more particularly, to a method of manufacturing a diester-based compound, which is performed using a continuous process including a reaction part in which a total of n reaction units spanning from a first reaction unit to an nth reaction unit are connected in series, wherein each of the reaction units includes a reactor, and the method includes: supplying a feed stream including a dicarboxylic acid and an alcohol into the first reactor; esterifying the feed stream to prepare a reaction product; and supplying a lower discharge stream including the reaction product into the reactor of the rear reaction unit. In this case, a conversion rate of the esterification reaction in the first reactor is controlled in a range of 50 to 80%.

Abstract: An apparatus for compensating a channel based on an artificial neural network includes a channel learning device that learns a property of the channel, and a channel compensating device that compensates for an error of the channel based on a learning result of the channel learning device.

Abstract: The present invention relates to a reaction control method in which a conversion rate of a reaction may be predicted from a flow rate of a feed introduced into a reactor and a flow rate of product water generated in the reactor, and through which the conversion rate of the reactor may be easily controlled.

Abstract: A printed circuit board according to an embodiment includes a first insulating layer, a second insulating layer disposed on the first insulating layer and including a cavity; and a pad disposed on the first insulating layer and having an upper surface exposed through the cavity; wherein the cavity includes a first part including a first inner wall; and a second part including a second inner wall under the first part; and wherein an inclination angle of the first inner wall is different from an inclination angle of the second inner wall.

Abstract: A diester-based material can be prepared continuously including a reaction part in which a total of n reaction units from a first reaction unit to an nth reaction unit are connected in series, the reaction unit including a reactor which esterifies dicarboxylic acid and alcohol, includes: esterifying dicarboxylic acid and alcohol in a reactor of the first reaction unit to produce a reaction product, and supplying a lower discharge stream including the reaction product to a reaction unit at a rear end, wherein an operating pressure of the reactor of the first reaction unit is 0.4 kg/cm2G to 5.5 kg/cm2G, an operating pressure is reduced from a reactor of any one reaction unit of reaction units from a second reaction unit to the nth reaction unit, and an operating temperature is increased from the reactor of the first reaction unit to the reactor of the nth reaction unit.

Abstract: The inventive concept provides a substrate treating control method. The substrate treating control method includes discharging a droplet to a substrate in which a relative position to the head unit changes from a nozzle of a head unit, and wherein a correction value is applied at a discharge timing of the nozzle until a preset discharge cycle among a discharge cycle of the droplet discharged by the nozzle.

Abstract: A non-transitory computer-readable storage medium includes a user interface configured to display data when a computer program stored in the non-transitory computer-readable storage medium is executed by one or more processors of a computing device; a version tree layer included in the user interface and configured to display a version tree including a main tree composed of one or more versions and a subtree composed of one or more subversions; and a data display layer included in the user interface and configured to display data corresponding to a selectively inputted subversion in response to a selective input for at least one subversion included in the version tree.

Abstract: The present disclosure relates to a system which increases the efficiency of an entire process by integrating a reflux unit in a system for producing a diester-based composition in which a plurality of reactors are connected in series.

Abstract: A semiconductor device includes a first fin type pattern in a first region of a substrate. The first fin type pattern includes a plurality of spaced-apart fins having respective sidewalls defined by a first trench. A first gate structure is provided, which intersects the first fin type pattern. A second fin type pattern is provided in a second region of a substrate. The second fin type pattern includes a fin having a sidewall defined by a second trench. A second gate structure is provided, which intersects the second fin type pattern. A field insulating film fills at least a part of the first trench and at least a part of the second trench.

Abstract: A method for providing a shared link of visual content performed by a server includes (a) receiving an upload request of a visual content from first and second terminals in response to project members through an upload area in main interface; (b) providing a shared link access information input area and an authority setting area to the first terminal or the second terminal; (c) generating a shared link in which the uploaded visual content is displayed based on the input shared link access information, and providing access information of the shared link to a third terminal; and (d) grasping whether the third terminal is a previously registered terminal based on user identification information input from the third terminal when the third terminal is accessed through the shared link, and providing a sharing interface, which is preset according to whether the registration is performed, to the third terminal.

Abstract: A method for providing a platform to manage produced visual contents includes (a) providing a main interface for a project by a server to a first terminal when the first terminal requests to generate the project for managing visual contents; (b) transmitting a project invitation message by the server to a second terminal when the first terminal inputs a project member request including identification information of the second terminal, and providing the main interface to the second terminal; (c) providing an upload area by the server, uploading visual contents in relation to the project by the first or the second terminal to the upload area, and providing a review interface displaying the visual contents by the server; and (d) displaying a text or a drawing image for evaluation or review overlapped with the visual contents by an input of the first or the second terminal through the review interface.

Abstract: A method for providing a chat function for management of visual contents performed by a server is provided. The method includes (a) receiving a project creation request including project identification information from a first terminal, and providing a main interface and a review interface to the first terminal and a second terminal accessed according to a project member request input of the first terminal; (b) providing a chat area when receiving an input for a chat menu in the main interface or review interface from the first terminal or the second terminal; and (c) managing chat messages differently for each project by matching chat information input through the chat area and comment information input through the review interface with the project identification information.

Abstract: A method for providing a function to review visual contents by a server is provided. The method includes (a) providing a visual content upload area to a first terminal and receiving an upload request including identification information of previously produced visual content from the first terminal; (b) receiving a click-input for the visual content of the first terminal or a second terminal invited by the first terminal and providing a review interface to the first terminal or the second terminal; and (c) collecting comment information input by the first terminal or the second terminal through the review interface and storing the comment information by matching with identification information of the visual content, in which the review interface includes a visual content display area, an annotation area and a comment area including a function of visually displaying a portion to be reviewed and evaluated in the visual content display area.

Abstract: The present disclosure relates to a diester-based material production unit including a reaction device in which an esterification reaction of dicarboxylic acid and a primary alcohol is performed, a column in which the gas-liquid separation of the primary alcohol and the water introduced is performed, a heat exchanger installed on a gas phase line of the column to remove heat of the gas phase line, a flash drum in which separation of a liquid phase and a gas phase is performed in the mixture stream including the primary alcohol and the water, a condenser installed on the flash drum upper line, and a layer separator in which the layer separation of a mixture of a liquefied primary alcohol and water into an organic layer and an aqueous layer is performed, wherein one or more lines through which recirculated primary alcohol from the flash drum and the layer separator flows are connected to an upper portion of the column.

Abstract: The present disclosure relates to a continuous production system and a diester-material production unit included therein, wherein the production unit includes a reaction device in which an esterification reaction of dicarboxylic acid and a primary alcohol is performed, a column in which gas-liquid separation of the primary alcohol and the water introduced is performed, a heat exchange device for recovering heat of a gas phase line of the column, a condenser installed at a rear end of the heat exchange device and liquefying a mixture of a gas-phase primary alcohol and water, and a layer separator in which the layer separation of a mixture of a liquefied primary alcohol and water is performed, wherein the heat exchange device includes one or more of a first heat exchanger for performing heat exchange with a raw material feed line of the reaction device, a second heat exchanger for performing heat exchange with a line through which a low temperature stream flows in a process, and a third heat exchanger for perfo