Abstract: A storage device may load, between a first time point at which information on candidate memory regions among a plurality of memory regions is started to be sent to an external device and a second time point at which a command requesting a map segment for a target memory region among the plurality of memory regions is received from the external device, all or a part of map segments corresponding to the candidate memory regions into a buffer.

Abstract: A method for preparing a quantum dot includes supplying a first mixture including a first precursor material including a silver precursor, an indium precursor, a first gallium precursor, and a first solvent including oleylamine, trioctylphosphine oxide, and trioctylamine, adding a first sulfur precursor to the first mixture to form cores including silver, indium, gallium, and sulfur, reacting the cores with a second precursor material including a second sulfur precursor and a second gallium precursor to form a first shell around each of the cores, wherein the cores including the first shells comprise first particles, and adding a first element precursor and a second element precursor to a second mixture, the second mixture including the first particles and a second solvent, to form a second shell around each of the first shells.

Abstract: A contents sharing network is provided. An operating method of a control device includes determining a current state of possible states in a contents sharing process over a network; and displaying an icon indicating the current state among a plurality of predefined icons. The states are defined as a combination of at least one item of network connection, device discovery, a type of the discovered device, the number of the discovered devices, and existence of an available additional service.

Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.

Abstract: The present invention relates to verifying the suitability of a tool and diagnosing a spindle for a machining center on which different tools are mounted. Provided are a machining center spindle diagnosis apparatus and method configured to monitor a change of a tool in the machining center; when the change of the tool is recognized, control the machining center to idle the spindle; acquire sensor data from a sensor installed on the machining center during the idling of the spindle; input the acquired sensor data to a tool verifying model pre-trained by a machine learning technology to verify suitability of the tool; and when the tool is verified to be suitable, inputting the acquired sensor data to a spindle diagnosing model pre-trained by the machine learning technology to diagnose an operating state of the spindle.

Abstract: Provided is a cooling device capable of controlling the temperature of an upper portion of a reactor, or more particularly, a gas supply device, for example, a shower head. The cooling device includes a separator configured to uniformly and efficiently cool the gas supply device.

Abstract: A display device according to the invention includes: a display panel and a driving chip mounted on the display panel. The display panel includes: a base layer, pixels, signal lines, fan-out lines, and a selection circuit. The base layer includes a first region, a second region bent with respect to a bending axis, and a third region adjacent to the second region. The pixels are arranged in the first region, and the signal lines are arranged in the first region and connected to the pixels. The fan-out lines are arranged in the second region and connected to the signal lines. The selection circuit is arranged between the fan-out lines and the driving chip in the third region and connected to the fan-out lines and the driving chip.

Abstract: A semiconductor photoresist composition including an organometallic compound, an additive represented by Chemical Formula 1, and a solvent, and a method of forming uses the semiconductor photoresist composition. Details of Chemical Formula 1 are as defined in the specification.

Abstract: Embodiments provide a quantum dot, a method of preparing the quantum dot, and a display device including the quantum dot. The quantum dot includes a core including zinc (Zn), tin (Sn), and phosphorous (P), and a shell surrounding the core, wherein a molar ratio of the number of moles of zinc to a number of moles of tin is in a range of about 0.1 to about 0.2.

Abstract: A turbine vane platform sealing assembly, a turbine vane, and a gas turbine are proposed. The turbine vane platform sealing assembly includes a first sealing member inserted into a first groove formed in a turbine vane platform in a first direction, the first sealing member extending in the first direction, a second sealing member inserted into a second groove formed in a second direction intersecting the first direction of the turbine vane platform such that an end thereof contacts an upper surface of the first sealing member, and a third sealing member provided so as to partially extend in the first direction while being partially bent in the second direction at a point where the first and second sealing members are in contact so that at least a portion of the bent part is inserted into the second sealing member to restrict the movement of the third sealing member.

Abstract: Provided are a biodegradable aliphatic-aromatic polyester copolymer having excellent hydrolysis resistance and high viscosity which has a carboxyl end group (CEG) content of 15 mg KOH/g or less, a ratio (Mz/Mn) of a z-average molecular weight (Mz) to a number average molecular weight (Mn) of 3 to 15, and a melt index (MI) of 5 g/10 min or less as measured under conditions of a temperature of 190° C. and a load of 2.16 kg in accordance with ASTM D 1238. A method of preparing a biodegradable aliphatic-aromatic polyester copolymer is provided, including adding a chain extender and an anti-hydrolysis agent to an aliphatic-aromatic polyester pre-copolymer over time, whereby a significant viscosity rise and improvement of hydrolysis resistance may be implemented simultaneously.

Abstract: Disclosed are a frame transmission method using a selective beamforming and a communication apparatus to perform the frame transmission method. The communication apparatus may determine a beamforming matrix based on classification information in which a plurality of subcarriers used for communication is classified into a plurality of frequency units, may map a long training field (LTF) sequence to the beamforming matrix, and transmit a beamforming training (BF-T) frame including the mapped LTF sequence to a plurality of stations, may receive, from the plurality of stations having receiving the BF-T frame, feedback information generated based on a reception strength of the BF-T frame, and may allocate frequency units to data frames to be transmitted to the plurality of stations based on the feedback information, and transmit the data frames using the allocated frequency units. The reception strength of the BF-T frame may be determined at each station for each frequency unit.

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

Abstract: The probe for hydrogen sulfide detection according to the present invention is represented by chemical formula 1 below.

Abstract: A semiconductor device includes an active pattern on a substrate, a pair of source/drain patterns on the active pattern, a channel pattern between the pair of source/drain patterns, the channel pattern including semiconductor patterns stacked to be spaced apart from each other, and a gate electrode crossing the channel pattern and extending in a first direction. One of the pair of source/drain patterns includes a first semiconductor layer and a second semiconductor layer thereon. The first semiconductor layer is in contact with a first semiconductor pattern, which is one of the stacked semiconductor patterns. The largest widths of the first semiconductor pattern, the first semiconductor layer, and the second semiconductor layer in the first direction are a first width, a second width, a third width, respectively, and the second width is larger than the first width and smaller than the third width.

Abstract: A camera module includes a housing, a first lens module configured to be movable in a first direction of the housing, a second lens module configured to be movable in the first direction, a first magnet disposed on the first lens module, a first yoke member disposed on the housing so as to face a first side surface of the first magnet and configured to limit a movement position of the first lens module with respect to the housing, and a second yoke member disposed on the second lens module so as to face a second side surface of the first magnet and configured to limit a movement position of the second lens module with respect to the first lens module.

Abstract: A dental coil spring extension device capable of extending a pitch of the dental coil spring is disclosed. The dental coil spring extension device includes a first grip part, a second grip part, and an extension part. The first grip part grips one coil of a coil spring. The second grip part grips the other coil of the coil spring. The extension part separates the first grip part and the second grip part to expand a distance between the one coil and the other coil. Each of the first grip part and the second grip part includes a recessed portion formed to surround a periphery of each of the one coil and the other coil of the coil spring. Thus, the load deflection rate of the dental coil spring itself may be increased, and the need for additional crimpable stops or arch wire replacement may be eliminated.

Abstract: Embodiments provide a quantum dot that includes a core including zinc (Zn), tin (Sn) and phosphorus (P), and a shell surrounding the core, wherein a molar ratio of a number of moles of zinc to a number of moles of tin is in a range of about 0.1 to about 2. The quantum dots have high luminous efficiency and color purity.

Abstract: The present disclosure relates to a novel citrate synthase variant, a microorganism comprising the variant, and a method for producing O-acetyl-L-homoserine and L-methionine using the microorganism.

Abstract: The present disclosure relates to a method of preparing a polymer, which includes: adding an alkyl-substituted aromatic vinyl-based monomer and a vinyl cyanide-based monomer to a reactor and initiating polymerization; and performing polymerization while continuously adding an alkyl-substituted aromatic vinyl-based monomer and a multifunctional initiator to the reactor, wherein the continuous addition of the alkyl-substituted aromatic vinyl-based monomer and the multifunctional initiator is initiated when a polymerization conversion rate is 10 to 30%, and the continuous addition of the alkyl-substituted aromatic vinyl-based monomer and the multifunctional initiator is terminated when a polymerization conversion rate is 70 to 80%.