Abstract: The present disclosure relates to a Corynebacterium glutamicum mutant strain having enhanced L-lysine productivity and a method of producing L-lysine using the same. The Corynebacterium glutamicum mutant strain may produce L-lysine in an improved yield by inhibiting the conversion of oxaloacetate to citrate due to decreased or inhibited expression of the gene encoding the citrate synthase.

Abstract: The present invention relates to various compounds capable of temporarily hardening soft tissue for surgical suturing of the soft tissue. The compounds according to the present invention can temporarily increase the hardness or tension of soft tissue, thereby improving the suturing efficiency during suturing of the soft tissue, thereby preventing aftereffects or the like from occurring due to insufficient anastomosis. In addition, the compounds according to the present invention can temporarily increase the hardness or tension of soft tissue, particularly pancreas, thereby increasing the suturing efficiency during pancreaticoduodenectomy and effectively preventing pancreatic leakage.

Abstract: Disclosed herein are a biomimetic tactile sensor, a robotic skin including the same, and a preparation method therefor. The biomimetic tactile sensor includes a base layer on which a plurality of electrodes and a plurality of microphones are arranged to be distributed, a hydrogel layer disposed on the base layer, and a stimulus receiving layer disposed on the hydrogel layer, and the biomimetic tactile sensor senses a tactile stimulus accompanied by pressure, vibration, or both.

Abstract: Provided are a novel compound capable of improving the light-emitting efficiency, stability, and lifespan of an element; an organic electronic element using same; and an electronic device thereof.

Abstract: A power conversion device comprises: a housing having a space formed therein and including a first opening and a second opening; a fan coupled to the second opening and allowing air to flow in a first direction from the first opening toward the second opening; a first electronic component arranged in the space; a heat dissipation member arranged at the rear of the first electronic component with respect to a flow direction of air; a printed circuit board arranged on the heat dissipation member; and a second electronic component arranged under the printed circuit board to be in contact with the upper surface of the heat dissipation member.

Abstract: A vehicle judder diagnostic method using artificial intelligence applied to a mobile-based GDS according to the present disclosure is characterized in that the mobile-based GDS samples a plurality of sensor signals of a sensor mounted in a vehicle in a vehicle during operation in a judder evaluation mode to quickly, separately diagnose whether the judder phenomenon of the vehicle is a geometric judder or a friction judder by mounting a deep neural network (DNN) model, developed by the trial and error process of a DNN by using the plurality of sensor signals of a test vehicle mounted with a double clutch transmission (DCT), as a judder determination artificial intelligence model 30 in the mobile-based GDS.

Abstract: The present invention relates to a strain which has increased glutamine productivity due to being transformed with a vector containing a nucleotide sequence that encodes a glutamine synthetase consisting of the amino acid sequence of SEQ ID NO: 1.

Abstract: Disclosed is an apparatus for manufacturing a fuel cell. When blanking a continuous membrane electrode assembly (MEA) into individual MEAs and then bonding the individual MEAs to a sub-gasket, a scrap electrolyte membrane located at the continuous MEA is prevented from being bonded to a sub-gasket by release-purpose surface roughness formed on a surface thereof, so that it is possible to prevent manufacturing defects of the fuel cell. Further, when the individual MEAs are bonded to the sub-gasket, the continuous MEA is intended to be well bonded to the sub-gasket up to edge portions of the individual MEAs by the pressing force of a pattern roll.

Abstract: The present disclosure relates to a silver powder preparation method comprising: a silver powder preparation step of preparing a silver salt, which comprises silver ions, and then reducing the silver ion so as to precipitate silver particles; a silver powder recovery step of separating silver particles from an aqueous solution or a slurry, which comprises the precipitated silver particles, and then washing and drying same to recover silver powder; and a silver powder coating step of injecting a pH adjuster into the recovered silver powder to adjust the pH, and then injecting a coating agent to coat after the pH adjustment. The pH adjuster is used in the silver powder coating step to adjust the pH, and thus, when silver power is used in a conductive paste, as the rate of change in viscosity over time is low, a conductive paste having excellent viscosity stability can be provided.

Abstract: The present invention provides a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic element using the same, and an electronic device thereof, wherein the compound is represented by Formula (1): wherein: A is a substituent represented by Formula (A-1)-(A-2);

Abstract: Provided are an organic electronic element including an anode, a cathode, and an organic material layer between the anode and the cathode, and an electronic device including the organic electronic element, wherein the organic material layer includes each of the compounds represented by Formulas 1 and 2 and the driving voltage of the organic electronic element is lowered, and the luminous efficiency and lifetime of the element are improved.

Abstract: A modeling method for designing a flow field of a fuel cell including a membrane electrode assembly including a catalyst layer and an electrolyte membrane, a gas diffusion layer, a flow field, and a bipolar plate includes modeling using a numerical model derived from a governing equation including a mass conservation equation of species, a fluid momentum in a porous media, and a modified Butler-Volmer's equation and outputting an oxygen diffusion characteristic in a catalyst layer from the modeling result.

Abstract: A vitrification device for gametes or embryos, wherein, the vitrification straw comprises: a loading rod, wherein the loading rod is a metal rod; a loading strip, wherein, the loading strip is connected with one end of the loading rod. According to the present invention, the loading rod is arranged as metal rod, which avoids embrittlement fracture caused by sudden temperature change when the loading rod is taken out of liquid nitrogen, moreover, the ice crystals that form on gametes or embryos when the loading rod floats out of the surface of liquid nitrogen, affecting the safety of gametes or embryos, the metal material used by this invention can increase the weight of the loading rod, preventing it from floating up in the liquid nitrogen, hence improve safety of gametes or embryos.

Abstract: A thermoplastic resin composition contains a styrene-methyl methacrylate-butyl acrylate copolymer and thus exhibits improved blackness and scratch resistance, and a molded article including the same.

Abstract: A battery defect screening device including a battery fixer for fixing a battery, a discharger, a charger, a voltmeter for measuring an initial voltage value, a first voltage value, and a second voltage value, and a defect screener for determining the battery to be normal when a first voltage change value, which is obtained by subtracting the first voltage value from the initial voltage value, is less than a first reference value, to have a hard short due to the foreign material when the first voltage change value is greater than the first reference value, to be normal when a second voltage change value, which is obtained by subtracting the second voltage value from the initial voltage value, is less than a second reference value, and to have a soft short due to the foreign material when the second voltage change value is greater than the second reference value.

Abstract: Disclosed area coating-free metallic thermoplastic resin composition having improved metallic texture and gloss and a molded product having extrusion-molded the same. For example, the molded produce may be manufactured by feeding a master batch containing a styrene-acrylonitrile (SAN) resin and a metal in a weather resistant thermoplastic resin containing an acrylonitrile styrene acrylate (ASA) resin in a side feeding method. The coating-free metallic thermoplastic resin composition may be optimized in types and contents of the master batch and dispersant contained therein. The molded product may be manufactured by feeding the master batch in the side feeding method to improve various physical properties, increase the dispensability and compatibility between compositions, and improve black streaks and flow marks, thereby improving metallic texture and gloss as well as suppressing the occurrence of the appearance defects.

Abstract: The present invention relates to a Corynebacterium glutamicum mutant strain having increased L-glutamic acid productivity, a method for constructing the same, and a method of producing L-glutamic acid using the same. The Corynebacterium glutamicum mutant strain is a strain into which a mechanosensitive ion channel gene derived from a Corynebacterium sp. strain has been introduced, and thus it can produce L-glutamic acid in an improved yield due to enhancement of glutamic acid release. Therefore, when the mutant strain is used, it is possible to more effectively produce L-glutamic acid.

Abstract: The present invention provides a novel compound capable of improving the luminous efficiency, stability and lifespan of a device, an organic electronic element using the same, and an electronic device thereof.

Abstract: Provided are an organic electronic element including an anode, a cathode, and an organic material layer between the anode and the cathode, and an electronic device including the organic electronic element, wherein the organic material layer includes each of the compounds represented by Formulas 1 and 2 and the driving voltage of the organic electronic element is lowered, and the luminous efficiency and lifetime of the element are improved.

Abstract: A heat treatment apparatus of membrane electrode assemblies includes a base, a first member extending from the base in a first direction, and a plurality of second members formed on the base in a radially outward direction of the first member and having inner surfaces facing the first member, where the first member or the second members includes a heat wire member, and membrane electrode assemblies are disposed between the first member and the second members.