Abstract: A circuit for preventing power imbalance of a resonance-type power converter is proposed. The circuit may include a rectifier converting input alternating current (AC) into direct current (DC) and frequency-controlled first and second resonant converter modules configured to receive an output voltage of the rectifier divided into two stages. The circuit may further include a controller outputting a first frequency command for controlling a frequency of a pulse width modulation (PWM) signal supplied to a switching element of a first switching unit of the first resonant converter module. The circuit may further include a frequency compensator compensating for the first frequency command and then outputting a second frequency command for controlling a frequency of a PWM signal supplied to a switching element of a second switching unit of the second resonant converter module, so as to eliminate power imbalance between the first and second resonant converter modules.

Abstract: The present invention relates to an insulating gas used for electrical insulation or arc extinguishing of an electrical device, and an electrical device for insulating electricity using the same. The insulating gas of the present invention, which may replace SF6 gas, consists of a mixed gas of trifluoromethyl trifluorovinyl ether (CF3OCFCF2) and a carrier gas. The insulating gas of the present invention has the characteristics of a low boiling point, high dielectric strength, low toxicity, and a low global warming potential (GWP=1 or less), and thus may replace SF6, and the low global warming potential with no loss of high insulating capacity and arc extinguishing capability may reduce greenhouse gases.

Abstract: A thermo-therapeutic apparatus is provided. The thermo-therapeutic apparatus according to one embodiment includes a first supporting plate having a plurality of through holes formed therein and formed of skin foam; a front cover disposed on the first supporting plate so that one side of the first supporting plate is exposed, and to which the first supporting plate is coupled; a plurality of ceramics each insertion-fixed to the plurality of through holes, and each configured to protrude to the outside of the first supporting plate to a predetermined height; a heater disposed on one sides of the plurality of ceramics and configured to heat the plurality of ceramics; a second supporting plate disposed on one side of the heater and including a vibrator; and a rear cover disposed on one side of the second supporting plate and coupled to the front cover.

Abstract: The present invention relates to an ottoman having a massaging apparatus. More specifically, the present invention relates to an ottoman having a massaging apparatus, the ottoman being usable as an ottoman enabling a part of the physical body of a user, sitting on a chair, to be conveniently put thereon at normal times, and being capable of conveniently massaging, if necessary, a part of the physical body of the user sitting on a chair.

Abstract: The present invention relates to a recombinant microorganism for producing 2,3-butanediol, in which, in a microorganism having the 2,3-butanediol biosynthetic pathway, at least one selected from a group consisting of a pathway for converting glutamic acid into polyglutamic acid, a pathway for converting sucrose into levan, a pathway for converting pyruvate into lactate, and a pathway for converting glycerophosphate into glycerol is inhibited. The present invention also relates to a method for producing 2,3-butanediol by using the recombinant microorganism for producing 2,3-butanediol.

Abstract: A diabetic foot management system according to one aspect includes a diabetic foot monitoring apparatus configured to measure user's foot condition information; and a diabetic foot analysis apparatus configured to determine a degree of progression of user's diabetic foot ulcer from the measured foot condition information using a machine learning-based diabetic foot determination model.

Abstract: A thermo-therapeutic apparatus and a method for controlling the same are provided.

Abstract: A method for manufacturing a semiconductor device and a semiconductor device produced thereby. For example and without limitation, various aspects of this disclosure provide a method for manufacturing a semiconductor device, and a semiconductor device produced thereby, that comprises an interposer without through silicon vias.

Abstract: Provided is a thermotherapy device, which includes a first housing (10), a second housing (20) disposed under the first housing (10), a transfer plate (30), at both sides of which transfer rollers (31) are provided, and a pair of guide rails (40) that is provided to the second housing (20) and on which the respective transfer rollers (31) of the transfer plate (30) are placed. The pair of guide rails (40) are integrally molded when the second housing (20) is injection-molded. Thus, since the guide rails on which the transfer rollers of the transfer plate travel are integrally molded when the second housing is injection-molded, inefficiency caused by mounting separate rails as in the related art is removed, and thereby assemblability, productivity, and economic efficiency of the thermotherapy device can be improved.

Abstract: Devices and methods related to film bulk acoustic resonators. In some embodiments, a film bulk acoustic resonator can be manufactured by a method that includes forming a first electrode having a first lateral shape and providing a piezoelectric layer on the first electrode. The method can further include forming a second electrode having a second lateral shape on the piezoelectric layer such that the piezoelectric layer is between the first and second electrodes. The forming of the first electrode and the forming of the second electrode can include selecting and arranging the first and second lateral shapes to provide a resonator shape defined by an outline of an overlap of the first and second electrodes, such that the resonator shape includes N curved sections joined by N vertices of an N-sided polygon, and such that the resonator shape has no axis of symmetry.

Abstract: A vehicle body structure for safely protecting a high-voltage, the vehicle body structure including: a battery mounted on bottom portions of a center floor and a rear floor; and a protective structure having a bottom portion on which a peripheral portion of the battery is mounted and including panels fitted to each other into a shape covering a peripheral portion of the center floor.

Abstract: The present invention relates to a dispersant composition comprising 2,3-butanediol, and to a cosmetic composition comprising the dispersant composition. In addition, the present invention relates to a dispersion media composition comprising 2,3-butanediol, and to a cosmetic composition comprising the dispersion media composition.

Abstract: The present disclosure provides a method of manufacturing a hot stamping component, the method includes inserting a blank into a heating furnace, heating the blank, and transferring the heated blank from the heating furnace to a mold, wherein an air cooling time of the blank in the transferring of the blank satisfies Equation 1.

Abstract: A method of manufacturing a hot stamping includes: inserting a blank having a plating layer formed on at least one surface of a base material into a heating furnace having a plurality of sections having different temperature increase rate ranges; and multi-stage heating the blank gradually while passing through the plurality of sections. The plurality of sections include: a first heating section having a first average temperature increase rate change rate; a second heating section having a second average temperature increase rate change rate different from the first average temperature increase rate change rate; and a third heating section having a third average temperature increase rate change rate different from the first average temperature increase rate change rate and the second average temperature increase rate change rate. The third average temperature increase rate change rate includes a section in which a positive value is changed to a negative value.

Abstract: The present invention relates to a recombinant microorganism which is capable of simultaneously fermenting at least two sugars in a lignocellulosic saccharified liquid, and also capable of generating diol.

Abstract: A side sill rigidity reinforcement structure for a vehicle is mounted an inside surface of a side sill of the vehicle, thereby improving rigidity against side collision. the side sill rigidity reinforcement structure includes: a side sill inner 11, a side sill outer 12 disposed outside the side sill inner 11 and bonded to the side sill inner 11, and a side sill reinforcement member 20 installed in a space between the side sill inner 11 and the side sill outer 12. In particular, the side sill reinforcement member 20 has a plurality of portions each having a closed section formed to penetrate in the width direction of the vehicle, and the portions are repeatedly formed in the longitudinal direction of the vehicle.

Abstract: A scrum type side sill includes: a side sill inner located on a side surface of a center floor, wherein the center floor forms a bottom of a vehicle body; a side sill outer coupled to the side sill inner and configured to form a side sill inner space; and a plurality of scrum members provided in the side sill inner space in a longitudinal direction of the vehicle.

Abstract: A vehicle body structure for safely protecting a high-voltage, the vehicle body structure including: a battery mounted on bottom portions of a center floor and a rear floor; and a protective structure having a bottom portion on which a peripheral portion of the battery is mounted and including panels fitted to each other into a shape covering a peripheral portion of the center floor.

Abstract: A scrum type side sill includes: a side sill inner located on a side surface of a center floor, wherein the center floor forms a bottom of a vehicle body; a side sill outer coupled to the side sill inner and configured to form a side sill inner space; and a plurality of scrum members provided in the side sill inner space in a longitudinal direction of the vehicle.

Abstract: A side sill rigidity reinforcement structure for a vehicle is mounted an inside surface of a side sill of the vehicle, thereby improving rigidity against side collision. the side sill rigidity reinforcement structure includes: a side sill inner 11, a side sill outer 12 disposed outside the side sill inner 11 and bonded to the side sill inner 11, and a side sill reinforcement member 20 installed in a space between the side sill inner 11 and the side sill outer 12. In particular, the side sill reinforcement member 20 has a plurality of portions each having a closed section formed to penetrate in the width direction of the vehicle, and the portions are repeatedly formed in the longitudinal direction of the vehicle.