Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.

Abstract: A wafer manufacturing method, an epitaxial wafer manufacturing method, and a wafer and epitaxial wafer manufactured thereby, are provided. The wafer manufacturing method enables the manufacture of a wafer with a low density of micropipe defects and minimum numbers of particles and scratches. The epitaxial wafer manufacturing method enables the manufacture of an epitaxial wafer that has low densities of defects such as downfall, triangular, and carrot defects, exhibits excellent device characteristics, and improves the yield of devices.

Abstract: A hair dye dispenser according to an embodiment of the present invention includes a housing having an opening hole formed on one side of which a hair dye is provided, a plurality of cartridges disposed inside the housing and accommodating at least one dyeing material, a main body in which the plurality of cartridges are rotatably disposed, a main motor for rotating the main body so that a first cartridge of the plurality of cartridges is located adjacent to the opening hole, a discharge module for discharging the dyeing material contained in the first cartridge, and an accommodating body in which a basket accommodating the dyeing material discharged by the discharge module is placed, wherein the discharge module may include an elevating body that pressurizes the first cartridge when moving up and is separated from the first cartridge when moving down.

Abstract: A knitting machine for clothing has a needle module with a plurality of needle units. Each of the needle units has a needle hook and a plurality of protrusions. The machine also has a first actuation module with a carriage that has a track to connect to one of the protrusions. The carriage can move left and right, and this movement moves the needle units in a longitudinal direction. The machine also has a second actuation module with a connector that has a screw thread to mesh with another one of the protrusions. The connector can move up and down, and this movement moves the needle units.

Abstract: A clothing-manufacturing knitting machine, and the clothing-manufacturing knitting machine that includes a needle unit including a needle hook formed in an end portion and a protrusion formed in a middle region, a connector including a screw thread formed to mesh with the protrusion of the needle unit, and an actuator configured to actuate the connector to rotate. The needle unit meshing with the screw thread is moved forward or backward as the connector is rotated by the actuator. Accordingly, there is provided a clothing-manufacturing knitting machine with a new actuating system.

Abstract: The disclosure relates to a 3D printer for clothing, the 3D printer including: a needle module in which a plurality of needle units are arranged side by side, the needle unit including a needle hook formed in an end portion and a plurality of protrusions formed in a middle region; a first actuation module including a carriage for a flat-knitting machine, a rear of which is formed with a track to be linked with one of the plurality of protrusions, and provided to be movable left and right; a second actuation module including a connector formed with a screw thread for meshing with another one of the plurality of protrusions, and an actuator for actuating the connector to move, and provided to be movable left and right; a first movement unit allowing the first actuation module to move up and down to be in contact with the needle module; and a second movement unit allowing the connector of the second actuation module to move up and down with respect to the needle module, wherein, when the protrusion of the needle

Abstract: The disclosure relates to a clothing-manufacturing 3D printer, and the clothing-manufacturing 3D printer according to the disclosure includes a needle unit including a needle hook formed in an end portion and a protrusion formed in a middle region; a connector including a screw thread formed to mesh with the protrusion of the needle unit; and an actuator configured to actuate the connector to rotate, wherein the needle unit meshing with the screw thread is moved forward or backward as the connector is rotated by the actuator. Accordingly, there is provided a clothing-manufacturing 3D printer with a new actuating system.

Abstract: According to an aspect of the present invention, the present invention provides a 3D printer head of ejecting a multi-molding melt by receiving a molding filament and molding pellets, the 3D printer head including: a filament supply unit supplying the molding filament; a pellet supply unit supplying the molding pellets; a nozzle pipe in which a penetration portion is provided therein in a longitudinal direction, the molding pellets are supplied from the pellet supply unit, and the molding pellets move; a rotary screw which is disposed in the penetration portion of the nozzle pipe, advances the molding pellets to one end of the nozzle pipe 32 by rotation, and has a filament supply path through which the molding filament is supplied, which is formed therein in a longitudinal direction; a heating portion which melts the molding pellets and the molding filament by heating the nozzle pipe to form the multi-molding melt; and a nozzle tip which is connected to one end of the nozzle pipe and ejects the molding melt.

Abstract: A manhole cover maintains a strength and weight the same as those of conventional manhole covers made of cast iron, eliminates the risk of theft, and achieves improved corrosion resistance and sealing properties. The manhole cover comprises: a base unit made of composite materials having compositions containing 12 to 18 wt % of glass fiber, 17 to 23 wt % of a polyester resin, with the remainder being calcium carbonate (CaCO3), wherein the base unit is mounted on the manhole such that an upper portion of the base unit is exposed aboveground; and a metal reinforcement unit which is uniformly distributed within the base unit to reinforce the base unit and increase weight and strength of the base unit.

Abstract: Provided are a manhole cover and a method for manufacturing same, wherein the manhole cover maintains a strength and weight the same as those of conventional manhole covers made of cast iron, eliminates the risk of theft, and achieves improved corrosion resistance and sealing properties. The manhole cover comprises: a base unit made of composite materials having compositions containing 12 to 18 wt % of glass fiber, 17 to 23 wt % of a polyester resin, with the remainder being calcium carbonate (CaCO3), wherein the base unit is mounted on the manhole such that an upper portion of the base unit is exposed aboveground; and a metal reinforcement unit which is uniformly distributed within the base unit to reinforce the base unit and increase weight and strength of the base unit.

Abstract: A homepage searching method uses a similarity recalculation based on a URL substring relationship. An entry point of a homepage is searched among a plurality of web documents belonging to the homepage by using their substring relationships. The technical essence lies in that the present invention uses a principle that if a URL of a certain web document is a substring of a URL of another web document, the former is more likely to be an entry point of a homepage than the latter. Thus, the present invention improves a conventional information searching method and allows a page serving as an entry point of a homepage to be searched prior to other documents. Accordingly, a user can determine whether a searched web document is a homepage or not without visiting all the URLs of the searched web documents.