Abstract: Disclosed is a meta-structure. The meta-structure includes a lower electrode, a lower insulating layer on the lower electrode, a lower metal oxide layer on the lower insulating layer, a metal layer on the lower metal oxide layer, an upper metal oxide layer on the metal layer, an upper insulating layer on the upper metal oxide layer, and antenna electrodes on the upper insulating layer.

Abstract: A complementary thin film transistor (TFT) includes a substrate and a first TFT and a second TFT disposed on the substrate, wherein a first conductive semiconductor layer of the first TFT and a second gate electrode layer of the second TFT are disposed in the same layer and include the same material.

Abstract: An example image forming includes a print engine to form an image, a display to display a user interface window for selecting at least one of an industry or a place using the image forming apparatus, and a processor to, based on at least one of the industry or the place being selected, set an option value corresponding to the at least one of the selected industry or place as a default option value for a function of the image forming apparatus.

Abstract: An example image forming includes a print engine to form an image, a display to display a user interface window for selecting at least one of an industry or a place using the image forming apparatus, and a processor to, based on at least one of the industry or the place being selected, set an option value corresponding to the at least one of the selected industry or place as a default option value for a function of the image forming apparatus.

Abstract: An example image forming includes a print engine to form an image, a display to display a user interface window for selecting at least one of an industry or a place using the image forming apparatus, and a processor to, based on at least one of the industry or the place being selected, set an option value corresponding to the at least one of the selected industry or place as a default option value for a function of the image forming apparatus.

Abstract: An example image forming includes a print engine to form an image, a display to display a user interface window for selecting at least one of an industry or a place using the image forming apparatus, and a processor to, based on at least one of the industry or the place being selected, set an option value corresponding to the at least one of the selected industry or place as a default option value for a function of the image forming apparatus.

Abstract: The present invention relates to a method of manufacturing a slag discharge door, which is provided separately from a molten-steel discharge opening in an electric furnace and opens and closes a slag discharge opening for discharging slag. The method of manufacturing the slag discharge door, which moves up and down on the slag discharge opening to open and close the slag discharge opening, includes the steps of: forming a door body by forging, forming a coolant passage, a coolant inlet, and a coolant outlet in the door body by drilling, and then finishing a passage that blocks a portion that is open toward an outer surface of the door body.

Abstract: A water purification apparatus includes a flow-rate regulating tank, an aeration tank, a solar power generation unit, and an air blowing unit. The flow-rate regulating tank changes flow-rate of polluted fluid to constantly discharge. The aeration tank purifies the fluid using microorganisms by contacting the polluted fluid supplied from the flow-rate regulating tank to an air, and includes a floatable panel supporting part and a purifying part connected under the panel supporting part to purify the polluted fluid. The solar power generation unit is supported by the panel supporting part to generate electric power using sunlight. The air blowing unit receives the electric power from the solar power generation unit to supply the air in the aeration tank.

Abstract: A method of performing cloud printing is provided. The method may include generating a virtual apparatus corresponding to an image forming apparatus in a mobile device, receiving, by the mobile device, a job request for the virtual apparatus, and when the mobile device is connected to the image forming apparatus, transmitting the received job request to the image forming apparatus.

Abstract: Provided is an assembly unit including 3×N (here, N is a natural number) number of polygonal surface parts, which extend in a vertical direction and have flat surfaces, connecting parts connecting end portions, which are adjacent to each other, of end portions of each of the polygonal surface parts, and coupling protrusions respectively protruding from the polygonal surface parts in a horizontal direction that is perpendicular to the vertical direction. The three polygonal surface parts in a clockwise direction are defined as one set, and the coupling protrusions respectively have formation positions that sequentially increase in height within the one set in the vertical direction.

Abstract: Provided is a method and an apparatus for manufacturing a lance nozzle comprising: a casting step for primarily manufacturing the lance nozzle comprising a plurality of discharge pipes, which discharge a gas supplied through an inlet to an outlet, and a front wall with a plurality of discharge holes, each of which is connected to the outlet of the discharge pipe; and a forging step for forming forging structure by forging a circumference of the discharge holes in a front surface of the front wall positioned on an opposite side to the discharge pipes.

Abstract: Provided is an assembly unit including 3×N (here, N is a natural number) number of polygonal surface parts, which extend in a vertical direction and have flat surfaces, connecting parts connecting end portions, which are adjacent to each other, of end portions of each of the polygonal surface parts, and coupling protrusions respectively protruding from the polygonal surface parts in a horizontal direction that is perpendicular to the vertical direction. The three polygonal surface parts in a clockwise direction are defined as one set, and the coupling protrusions respectively have formation positions that sequentially increase in height within the one set in the vertical direction.

Abstract: A method of performing cloud printing is provided. The method may include generating a virtual apparatus corresponding to an image forming apparatus in a mobile device, receiving, by the mobile device, a job request for the virtual apparatus, and when the mobile device is connected to the image forming apparatus, transmitting the received job request to the image forming apparatus.

Abstract: Provided are an image forming apparatus with a touchscreen and a method of editing input letters using the same. In the method, an inputted text is displayed on the touchscreen using keys of the soft keyboard. A letter to be edited is received from the displayed text. At least one of coordinates representing adjacent keys of the soft keyboard is determined based on a coordinate corresponding to a location of the received letter on the touchscreen. At least one of the magnified images of the adjacent keys corresponding to the determined coordinates and functions keys is displayed. The displayed text is edited using a letter corresponding to one key that is selected from the magnified image of the adjacent keys.

Abstract: Embodiments of the invention provide an impeller for an electric blower. The impeller includes a hub and a shroud disposed to correspond to the hub so that an internal space and an outlet are formed between the hub and the shroud and including an inlet formed therein to introduce air and a disk part formed from the inlet toward an outside. The impeller further includes a blade disposed in the internal space between the shroud and the hub, whereby a distance from a leading edge of the blade positioned at the inlet side to the center of the inlet is the same as a minimum distance from a rim of the inlet to the center of the inlet.

Abstract: Disclosed herein is a fan module including an impeller cover having an intake member formed therein and covering one side of a housing, an impeller accommodated within the impeller cover and rotatably coupled to a rotational shaft of a motor accommodated in the housing, and a leakage reduction member positioned in an inner surface of the impeller cover to reduce a flow leakage between the impeller cover and the impeller.

Abstract: The present invention relates to a method of manufacturing a slag discharge door, which is provided separately from a molten-steel discharge opening in an electric furnace and opens and closes a slag discharge opening for discharging slag. The method of manufacturing the slag discharge door, which moves up and down on the slag discharge opening to open and close the slag discharge opening, includes the steps of: forming a door body by forging, forming a coolant passage, a coolant inlet, and a coolant outlet in the door body by drilling, and then finishing a passage that blocks a portion that is open toward an outer surface of the door body.

Abstract: A tuyere for an iron making furnace, including a body unit having a blast passage passing through a central axis thereof, wherein the body unit includes: a frusto-conical body having a main body cooling passage; and a protruding part protruding from the body, wherein the tuyere further includes: a cover unit combined with the protruding part and defining a tip body cooling passage between the cover unit and the outer circumferential surface of the protruding part; and an outer unit combined with the cover unit while surrounding the cover unit and defining an outer cooling passage therein. When the outer unit is partially damaged, although the cooling water supply to the damaged part is cut off, the function of the tuyere can be continuously performed both by the remaining part of the outer unit and by the body unit, thereby providing a tuyere having a lengthened life span.

Abstract: Disclosed herein is a switched reluctance motor assembly, including: a rotating shaft forming a rotating center of a motor; a rotor part rotatably coupled on the rotating shaft; a front part mounted over the rotor part to support a first bearing part of the rotating shaft; a diffuser part having a plurality of integrated guide vanes mounted at an outer side thereof while being coupled with the axial upper portion of the front part; and an impeller part coupled with the axial upper portion of the diffuser and coupled with the rotating shaft. According to the preferred embodiments of the present invention, it is possible to reduce the noise generated at the time of driving the motor by manufacturing the guide vanes mounted in the diffuser of the switched reluctance motor so as to be vertically integrated.

Abstract: A method of processing print job data received in a deep sleep mode by an image forming apparatus which performs a print job based on authentication includes: detecting a wakeup event at at least one external input port included in the image forming apparatus, parsing print job data while maintaining the deep sleep mode if the wakeup event is reception of the print job data, checking whether an authentication field value for performing authentication exists in the parsed print job data, and ignoring the wakeup event and keeping the deep sleep mode if the authentication field value does not exist based on the checking.