Abstract: A condensate water drain control system for fuel cells includes a fuel cell stack configured to generate electric power through chemical reaction, a fuel supply line configured to recirculate fuel discharged from the fuel cell stack together with fuel introduced from a fuel supply valve, a water trap located in the fuel supply line, the water trap being configured to collect condensate water discharged from the fuel cell stack, a drain valve configured to discharge the condensate water stored in the water trap to the outside when opened, and a drain controller configured to determine whether the fuel supply valve is controlled such that pressure in the fuel supply line is maintained before the drain valve is opened and to sense discharge of fuel from the fuel supply line through the drain valve upon determining that the pressure is maintained.

Abstract: Disclosed is an orthodontic bracket including a bracket body having a slot into which an orthodontic wire is inserted, a bracket cover mounted on the bracket body and configured to open and close the slot, and a ligating member provided in the bracket cover and configured to selectively block the slot so as to confine the orthodontic wire in the slot. The orthodontic bracket may precisely and consistently transmit force, for example, torque, of the orthodontic wire to a tooth, and minimize or prevent factors contributing to failure, such as deformation of or damage to the ligating member due to opening and closing of the slot.

Abstract: According to an aspect of the present disclosure, a method for generating a record of a telemedicine service in a video call between at least two terminal devices is disclosed. The method includes obtaining authentication information of a user authorized to use the telemedicine service, receiving a sound stream of the video call from a terminal device of the at least two terminal devices, detecting a voice signal from the sound stream, verifying whether the voice signal is indicative of the user based on the authentication information, upon verifying that the voice signal is indicative of the user, continuing the video call to generate the record of the telemedicine service, and upon verifying that the voice signal is not indicative of the user, interrupting the video call.

Abstract: Disclosed is an orthodontic bracket including a bracket body having a slot into which an orthodontic wire is inserted, a bracket cover mounted on the bracket body and configured to open and close the slot, and a ligating member provided in the bracket cover and configured to selectively block the slot so as to confine the orthodontic wire in the slot. The orthodontic bracket may precisely and consistently transmit force, for example, torque, of the orthodontic wire to a tooth, and minimize or prevent factors contributing to failure, such as deformation of or damage to the ligating member due to opening and closing of the slot.

Abstract: Disclosed are a dental wire supporter, which supports an orthodontic wire and limits the movement of the orthodontic wire in a predetermined direction, and an orthodontic device (orthodontic system) having the same. The dental wire supporter includes a limiter having a wire hole into which an orthodontic wire is inserted, and a support base provided at the limiter in order to fix the limiter to a tooth. One side of the wire hole is blocked and an opposite side of the wire hole is open so that the limiter supports the end of the orthodontic wire in a longitudinal direction of the orthodontic wire.

Abstract: Disclosed are a dental wire supporter, which supports an orthodontic wire and limits the movement of the orthodontic wire in a predetermined direction, and an orthodontic device (orthodontic system) having the same. The dental wire supporter includes a limiter having a wire hole into which an orthodontic wire is inserted, and a support base provided at the limiter in order to fix the limiter to a tooth. One side of the wire hole is blocked and an opposite side of the wire hole is open so that the limiter supports the end of the orthodontic wire in a longitudinal direction of the orthodontic wire.

Abstract: Embodiments of the present invention relate to a biodegradable scaffold for replacing tissue or inducing tissue regeneration and a preparation method thereof, wherein the scaffold comprises at least one woven silk tube layer and a collagen layer inside the tube layer. The scaffold is excellent in terms of tissue regeneration and mechanical properties and causes little or no immune response after implantation. Thus, the scaffold can be effectively used as a matrix for the regeneration of ligaments and tendons and the repair of injured muscles.

Abstract: The present invention relates to a graphene sheet and a transparent electrode, and an active layer including the same, and a display device, an electronic device, an optoelectronic device, a battery, a solar cell, and a dye-sensitized solar cell including these. The graphene sheet includes a lower sheet including 1 to 20 graphene layers, and a ridge formed on the lower sheet and including more graphene layers. The ridge has a metal grain boundary shape.

Abstract: Disclosed are an orthodontic wire of giving orthodontic force to anterior teeth in order to correct bimaxillary protrusion, and an orthodontic system with the same. The orthodontic wire for correcting bimaxillary protrusion includes a lingual arch wire which is curved corresponding to a set of the anterior teeth so as to be fitted to a lingual side of the anterior teeth; a traction wire which is provided in the lingual arch wire for connection with a traction member of giving lingual traction force; and a pair of support wires which is extended backward from the lingual arch wire so as to provide the lingual arch wire with reaction to the lingual traction force.

Abstract: The present invention relates to a graphene sheet and a transparent electrode, and an active layer including the same, and a display device, an electronic device, an optoelectronic device, a battery, a solar cell, and a dye-sensitized solar cell including these. The graphene sheet includes a lower sheet including 1 to 20 graphene layers, and a ridge formed on the lower sheet and including more graphene layers. The ridge has a metal grain boundary shape.

Abstract: A graphene sheet including a lower sheet including 1 to 20 layers of graphene, and a ridge formed on the lower sheet and including more layers of the graphene compared with the lower sheet, the ridge having a shape of a grain boundary of a metal, a transparent electrode and an active layer including the same, and a display, an electronic device, an optoelectronic device, a battery, a solar cell, and a dye-sensitized solar cell including the transparent electrode and/or the active layer are provided.

Abstract: Disclosed are an orthodontic wire of giving orthodontic force to anterior teeth in order to correct bimaxillary protrusion, and an orthodontic system with the same. The orthodontic wire for correcting bimaxillary protrusion includes a lingual arch wire which is curved corresponding to a set of the anterior teeth so as to be fitted to a lingual side of the anterior teeth; a traction wire which is provided in the lingual arch wire for connection with a traction member of giving lingual traction force; and a pair of support wires which is extended backward from the lingual arch wire so as to provide the lingual arch wire with reaction to the lingual traction force. With this configuration, it is possible to prevent an inturned tooth when the bimaxillary protrusion is corrected, and it is also possible to correct aggressive protrusion without surgical operation since traction force is transmitted to an alveolar bone.

Abstract: A dish washer is disclosed. The dish washer has improved washing efficiency while being constructed in a compact structure. A general dish washer is an apparatus that injects wash water to dishes so as to wash the dishes, and dries and/or sterilizes the washed dishes. The washer according to the present invention includes a filter unit (170) filtering at least some of the wash water injected form a tub (1), fallen downward, and directed to a collection part of sump (20).

Abstract: Embodiments of the present invention relate to a biodegradable scaffold for replacing tissue or inducing tissue regeneration and a preparation method thereof, wherein the scaffold comprises at least one woven silk tube layer and a collagen layer inside the tube layer. The scaffold is excellent in terms of tissue regeneration and mechanical properties and causes little or no immune response after implantation. Thus, the scaffold can be effectively used as a matrix for the regeneration of ligaments and tendons and the repair of injured muscles.

Abstract: Disclosed is a method of manufacturing graphene, a transparent electrode and an active layer including the graphene, and a display, an electronic device, an optoelectronic device, a solar cell, and a dye-sensitized solar cell including the transparent electrode and the active layer. The method of manufacturing graphene includes: (a) preparing a subject substrate; (b) forming a metal thin film on the subject substrate and heat-treating the metal thin film to increase the grain size of the metal thin film; (c) supplying a carbon source material on the metal thin film; (d) heating the supplied carbon source material, the subject substrate, and the metal thin film; (e) diffusing carbon atoms generated from the heated carbon source material due to thermal decomposition into the metal thin film; and (f) forming graphene on the subject substrate by the carbon atoms diffused through the metal thin film.

Abstract: Growing a first nitride semiconductor layer on an AlxGayInI-x-yN (0<x<1, 0<y<1, 0<x+y<1) layer, a second step for reducing the thickness of the first nitride semiconductor layer by growth interruption and, growing a second nitride semiconductor layer having a band gap energy higher than that of the first nitride semiconductor layer on the first nitride semiconductor layer with the reduced thickness and a light emitting device using the growth method.

Abstract: Growing a first nitride semiconductor layer on an AlxGayIn1-x-yN(0?x?1, 0<y?1, 0<x+y?1)layer, reducing the thickness of the first nitride semiconductor layer by growth interruption and, growing a second nitride semiconductor layer having a band gap energy higher than that of the first nitride semiconductor layer on the first nitride semiconductor layer with the reduced thickness and a light emitting device using the growth method.

Abstract: Provided is a sterilizing control method for a dishwasher. The method includes inputting a command for a sterilizing cycle, and turning a sterilizer disposed within a tub on and off at regular, predetermined intervals, according to the inputted command.

Abstract: A dish washer is disclosed, in which assembly of the dish washer is improved, and an error operation and trouble of a driver due to water leaked in a base can be avoided. To this end, the dish washer includes a tub (3) provided with a space for washing the dishes and a communication hole (3a) formed on the bottom, a base (100) fixed to the bottom of the tub (3), having a plane portion (100a) which is not connected with the outside, a sump assembly (200) provided in the plane portion of the base and fixed to the tub (3) while shielding the communication hole (3a) of the bottom, having a sump (220) and a driver (210), wherein washing water is received in the sump (220) and the driver (210) transmits a driving force to the sump (220), and a leakage sensing device (300) provided in the base (100), sensing a water level of washing water leaked in the base (100). Thus, assembly of the dish washer can be improved, and also life span of the driver can be increased.

Abstract: A dish washer is disclosed. The dish washer has improved washing efficiency while being constructed in a compact structure. A general dish washer is an apparatus that injects wash water to dishes so as to wash the dishes, and dries and/or sterilizes the washed dishes. The washer according to the present invention includes a filter unit (170) filtering at least some of the wash water injected form a tub (1), fallen downward, and directed to a collection part of sump (20).