Abstract: A method of manufacturing a high-electron-mobility transistor device is provided. The method includes sequentially forming a transition layer and a semiconductor layer on a substrate, etching a portion of a surface of the semiconductor layer to form a barrier layer region having a certain depth and forming a barrier layer in the barrier layer region, forming a source electrode and a drain electrode on a 2-dimensional electron gas (2-DEG) layer upward exposed at a surface of the semiconductor layer, in defining the 2-DEG layer formed along an interface between the semiconductor layer and the barrier layer, forming a passivation layer on the semiconductor layer, the barrier layer, the source electrode, and the drain electrode and etching a portion of the passivation layer to upward expose the source electrode, the drain electrode, and the barrier layer, and forming a gate electrode on the upward exposed barrier layer.

Abstract: The present invention relates to a roll-type hook tape for providing a disposable diaper hook member, which is more stably fastened to a loop member which is a counterpart of the hook member, and greatly contributes to manufacturing and commercialization in the form of a roll.

Abstract: Proposed is a radio frequency output apparatus capable of vibrating and a control method thereof. The apparatus includes: a main body for overall operation control; a handpiece connected to the main body and operated by receiving power from the main body; and a tip attached to a side of the handpiece and in close contact with user's skin, wherein the main body may include: a first power part; a first control part; a first display part; a storage part; an energy generation part; and a cooling part, and the handpiece may include: a second power part; a second control part; a second display part; an energy delivery part; a gas delivery part; and a casing, and the tip may include: a housing; an electrode part; a data collection part; and a chamber, and the tip may further include: a vibration part.

Abstract: A semiconductor includes a lower structure, an upper structure on the lower structure, and a connection pattern between the lower structure and the upper structure. The connection pattern is configured to electrically connect the lower structure and the upper structure to each other. The lower structure includes a lower base and a first lower chip on the lower base. The first lower chip includes a chip bonding pad, a pad structure, and a heat sink structure. The connection pattern is connected to the upper structure and extends away from the upper structure to be connected to the pad structure. The pad structure has a thickness greater than a thickness of the chip bonding pad. At least a portion of the heat sink structure is at a same height level as at least a portion of the pad structure.

Abstract: A power control device is provided for an aircraft. The power control device may include at least one first battery, a second battery having a lower power density and higher energy density than the at least one first battery, at least one lift motor connected, via a first electrical path, to the at least one first battery, a cruise motor connected, via a second electrical path, to the second battery, and a power control circuit configured to control the at least one first battery, the second battery, the at least one lift motor, and the cruise motor.

Abstract: A display device includes conductive layers on a substrate, a via layer on the conductive layers, a first electrode and a second electrode extending in one direction on the via layer and spaced from each other, a first insulating layer on the first electrode and the second electrode, a plurality of light emitting elements on the first insulating layer, each of the light emitting elements having one end on the first electrode and an other end on the second electrode, and a first connection electrode and a second connection electrode on the first insulating layer, the first connection electrode overlapping the first electrode, and the second connection electrode overlapping the second electrode, wherein the first connection electrode and the second connection electrode are in contact with the conductive layers through contact portions.

Abstract: A spatial image projection device includes a housing, a display unit that is accommodated in the housing and configured to output a hologram image, a half-mirror configured to project a spatial image corresponding to the hologram image inside the housing, and a first polarizing film that is disposed outside the housing and configured to block a part of light directed toward a viewer from the housing.

Abstract: A device for diagnosing a valve failure of a fuel cell system is capable of accurately and quickly determining whether an integrated valve in a fuel cell system is operated abnormally. and preventing problems caused by the operation abnormality of the integrated valve.

Abstract: A composition containing a Dendropanax morbifera LEV. extract, of the present invention, has excellent activities of inhibiting the oxidation of A2E, inhibiting oxidized A2E-induced death of retinal pigmented epithelial cells, and inhibiting the accumulation of drusen, and thus can be used for preventing eye damage. In addition, a composition containing a Dendropanax morbifera LEV. extract, of the present invention, can be developed even into a therapeutic agent for various eye diseases and a health functional food.

Abstract: A system for a vehicle may include a first battery pack diagnosis apparatus connected to a first battery pack, a second battery pack diagnosis apparatus connected to a second battery pack, a third battery pack diagnosis apparatus connected to a third battery pack, and a fourth battery pack diagnosis apparatus connected to a fourth battery pack. The first battery pack diagnosis apparatus may be configured to determine, based on a measured value of an integrated insulation resistance of an inverter terminal associated with the vehicle, whether a battery, of the first battery pack, the second battery pack, the third battery pack, or the fourth battery pack, is in a failure state, and based on a determination that the battery is in the failure state and based on individually measured insulation resistance of the first-fourth battery packs, determine a failure position of the battery.

Abstract: A filter module mounted on an air purifier to filter air includes a first filter unit and a second filter unit detachably connected to the first filter unit and arranged to surround the first filter unit. The first filter unit includes a shape-corresponding portion having at least a portion which is formed in a curved shape having a predetermined curvature. At least a portion of the edge of the second filter unit is formed in a shape corresponding to the shape-corresponding portion, and when the filter module is mounted on the air purifier, the amount of air passing through the first filter unit per unit area is greater than the amount of air passing through the second filter unit per unit area.

Abstract: The present disclosure relates to a flight system and a failure responding method therefor. A flight system includes: a plurality of fuse boxes configured to control application of a voltage to at least one propulsion device; and an interlock control apparatus configured to control interlock lines between fuse boxes connected using the interlock lines among the fuse boxes to synchronize and control opening of the fuse boxes connected using the interlock lines.

Abstract: Disclosed is a method for removing nitrogen and phosphorus from sewage and wastewater through a combination of a biological nitrogen and phosphorus removal process using nitrite nitrogen and an anaerobic ammonium oxidation process. An objective of an embodiment of the present invention is to provide an apparatus for removing nitrogen and phosphorus in which, by inducing a denitritation- and nitritation-based biological nitrogen and phosphorus removal process in a bioreactor and applying an anaerobic ammonium oxidation process, nitrogen and phosphorus can be economically and effectively removed without separately injecting organic materials.

Abstract: A power supply system of an aircraft includes a fuel cell that generates electrical energy, a converter device including a mode switch device that supplies power to a first motor device through a first output terminal and switches a connection between an output node of the fuel cell and the first output terminal, a first battery device that supplies a voltage from a first battery to a second motor device through a second output terminal and connects the second output terminal with the first output terminal under control of the mode switch device, and a processor that controls the mode switch device to enter an emergency mode when detecting an error in the converter device or the first battery device and connects the first output terminal with the second output terminal.

Abstract: The present invention relates to an electrolyte for batteries and a secondary battery. The present invention has an effect of providing a secondary battery having improved charging efficiency and output due to reduced charging resistance and having excellent long-term lifespan and high-temperature capacity retention rate.

Abstract: A wing frame includes a front wing beam extending in a left-right direction; a rear wing beam extending in the left-right direction and spaced rearward from the front wing beam, and a plurality of rib parts, each of which includes a middle rib coupled to a rear side of the front wing beam and a front side of the rear wing beam.

Abstract: Disclosed herein is a once-through heat exchanger that includes a tube stack including a plurality of tubes, a plurality of heads connected to the tubes and configured to accommodate heated steam, and a manifold connected to the heads via a first link pipe and a second link pipe and configured to accommodate heated steam. The heads are spaced in a direction crossing a longitudinal direction thereof, and the first link pipe and the second link pipe include a first inclined link part or a second inclined link part, respectively, extending at an angle to each other.

Abstract: A connector assembly according to the present invention comprises a receptacle connector and a plug connector vertically coupled to the receptacle connector, the plug connector including: a signal pin having one side in electrical contact with a signal line of a cable and the other side in elastic contact with a clip pin of the receptacle connector; a shield can formed to enclose the signal pin such that the other side of the signal pin is exposed downwards and to be electrically spaced apart from the signal pin; a first insulating member coupled to the signal pin to insulate between the signal pin and the shield can; and a plug shell which has an open lower portion and encloses an upper surface and a side surface of the shield can to expose the other side of the signal pin downwards, the receptacle connector including: a clip pin which has a lower portion in contact with a signal pad of a circuit board and an upper portion in elastic contact with the other side of the signal pin; a receptacle base which is f

Abstract: A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.

Abstract: Disclosed is an electrolyte and a secondary battery containing the same. According to the present disclosure, charging efficiency and output may be improved due to low discharge resistance, and gas generation and thickness increase may be suppressed to provide a secondary battery with long-term lifespan and excellent high temperature capacity retention.