Abstract: The present invention relates to a method of preparing a polymer, which includes: adding a first reaction solution including an aqueous solvent and a monomer mixture including an alkyl-substituted aromatic vinyl-based monomer, an alkyl-unsubstituted aromatic vinyl-based monomer, and a vinyl cyanide-based monomer to a reactor and initiating polymerization; and performing polymerization by continuously adding an alkyl-substituted aromatic vinyl-based monomer to the reactor, wherein the first reaction solution satisfies Expression 1 (see the description of the invention).

Abstract: Provided is a polymer production method including: batch-adding a reaction solution including a monomer mixture including a maleimide-based monomer, a vinyl aromatic monomer, and a vinyl cyanide-based monomer and an aqueous solvent to a reactor and initiating polymerization; and carrying out the polymerization while continuously adding the maleimide-based monomer and the aqueous solvent to the reactor, wherein the reaction solution satisfies the above Formula 1.

Abstract: Provided is an automatic mask replacement device for a screen printer, wherein: a mask that is already installed in a screen printer may be automatically replaced with a new mask, thereby enabling quick switching to the production of a new printed circuit board without unnecessary wasting of time and manpower and without the inconvenience of replacement work, and through the quick switching, providing the advantages of increasing efficiency by increasing productivity and shortening working time; the occurrence of product defects due to replacement work may be minimized in accordance with the rate of change in process conditions being minimized through quick replacement of the mask through an automatic process, rather than an impractical replacement of the mask by manpower; by minimizing a movement distance according to mask replacement, the time required for mask replacement is minimized, thereby enabling quick replacement.

Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Abstract: A child anchor for a vehicle can be moved down and hidden in a seat by a user operating the apparatus with the seat changed into a full flat state, whereby it is possible to prevent contact between the child anchor and a passenger who takes a rest in the seat in the full flat state. Accordingly, there is an advantage that it is possible to improve convenience for a passenger who takes a rest.

Abstract: A curable composition is provided. The curable composition comprises a polyorganosiloxane component and a redox catalyst, and is capable of curing a pressure-sensitive adhesive composition without a curing process by heat or energy rays so as to form a pressure-sensitive adhesive layer having appropriate release peel force and residual bond ratio.

Abstract: A foreign substance capturing apparatus according to an embodiment of the present invention may comprise: a capturing body unit having an inlet port for introducing the air including magnetic foreign substances and an outlet port for discharging the air from which the magnetic foreign substances have been removed; and a magnetic isolation unit connected to the capturing body unit, including a magnetic member for isolating, by an attractive force, the magnetic foreign substances from the air flowing in the capturing body unit, and provided with a nonmagnetic member surrounding the magnetic member.

Abstract: An encoding apparatus and a decoding apparatus in a transform between a Modified Discrete Cosine Transform (MDCT)-based coder and a different coder are provided. The encoding apparatus may encode additional information to restore an input signal encoded according to the MIDCT-based coding scheme, when switching occurs between the MDCT-based coder and the different coder. Accordingly, an unnecessary bitstream may be prevented from being generated, and minimum additional information may be encoded.

Abstract: A control device for an electric motor that outputs a control command for changing a direction of the electric motor provided with a handle, and starting, stopping, and decelerating the electric motor includes an enclosure that has a curved outer surface on a lower side and is attachable to and detachable from an outer surface of the handle, and a driving signal output unit that protrudes from a side portion of the enclosure and outputs at least one of starting and speed control commands of the electric motor.

Abstract: In a dicing film, an adhesive strength of an adhesive layer constituting the dicing film may sufficiently decrease after heat treatment, and a semiconductor die may be easily separated from the dicing film. Accordingly, the effect of improving pickup performance of the semiconductor die may be obtained.

Abstract: The present invention relates to hybrid exosomes, a use of the same, and a preparation method of the same, and the hybrid exosomes provided from the present invention have excellent skin inflammation amelioration, skin wrinkle amelioration, skin moisturization efficacy, and skin regeneration efficacy compared to using hydrangea-derived exosomes and liposomes alone, and thus can be effectively utilized as a cosmetic composition containing the same as an active ingredient. In addition, the hybrid exosomes have better stability and biocompatibility compared to existing exosomes.

Abstract: Provided is an encoding apparatus for integrally encoding and decoding a speech signal and a audio signal, and may include: an input signal analyzer to analyze a characteristic of an input signal; a stereo encoder to down mix the input signal to a mono signal when the input signal is a stereo signal, and to extract stereo sound image information; a frequency band expander to expand a frequency band of the input signal; a sampling rate converter to convert a sampling rate; a speech signal encoder to encode the input signal using a speech encoding module when the input signal is a speech characteristics signal; a audio signal encoder to encode the input signal using a audio encoding module when the input signal is a audio characteristic signal; and a bitstream generator to generate a bitstream.

Abstract: A high-purity NO2 gas generation apparatus, according to the present invention, comprises: an ozone gas generator; a nitrogen oxide gas generator containing NO; and a mixing unit for mixing ozone from the ozone gas generator and gas from the nitrogen oxide gas generator. Gas containing NO2 from the high-purity NO2 gas generation apparatus may be supplied to an apparatus for producing high-concentration activated water and fertilizer water. The apparatus for manufacturing high-concentration activated water and fertilizer water, according to the present invention, comprises: an upright cylindrical column forming a flow path in the longitudinal direction; a water supply unit positioned above the column and supplying water to the flow path; a gas supply unit positioned below the flow path and supplying gas containing NO2 gas; and a discharge port positioned at the lower end of the flow path and discharging a fluid.

Abstract: A two-dimensional phased subarray MIMO radar apparatus includes a transmission array and a reception array. The transmission array is configured to emit transmission signals, which are orthogonal to each other, towards a target object and extends in a first direction. Moreover, the transmission array includes a plurality of transmission phased subarrays. The reception array is configured to receive reflected signals, which are reflected from the target object, among the emitted transmission signals and extends in a second direction intersecting the first direction. Moreover, the reception array includes a plurality of reception phased subarrays. Each of the plurality of transmission phased subarrays includes a plurality of transmission antennas. Each of the plurality of reception phased subarrays includes a plurality of reception antennas.

Abstract: A foreign substance collecting apparatus according to one embodiment of the present disclosure may comprise: a collection body unit formed with a suction port through which air including foreign substances flows in and a discharge port through which air removed of the foreign substances is discharged; and a mixing unit provided inside the collection body unit and disposed on a flow passage of the air, and forming a vortex in washing water contained therein by inducing a rotary flow of the air.

Abstract: A calibration circuit includes a selection unit, a power detector, an analog-to-digital converter and a calibrator. The selection unit is connected to the plurality of channels, selects two channels from among the plurality of channels, provides a test signal to the selected two channels, and receives a test result signal from the selected two channels. The power detector detects power of the selected two channels. The analog-to-digital converter performs an A/D conversion on an output of the power detector. The calibrator calibrates the phases and the gains between the plurality of channels based on an output of the analog-to-digital converter. One of the plurality of channels is set as a reference channel, phases and gains of remaining channels other than the reference channel among the plurality of channels are sequentially optimized based on the reference channel, and a phase and a gain of the reference channel is optimized.

Abstract: A grain-orientation electrical steel sheet according to an exemplary embodiment of the present invention includes a linear groove formed in a direction intersecting with the rolling direction, the groove includes the gradient section and the uniform section on a cross section including the transverse direction of the groove and the rolling surface normal direction of the steel sheet, and a length of the gradient section (GS) and the length of the uniform section (US) satisfy Equation 1 below. 0.1?[GSL]/[USL]?0.5??[Equation 1] In Equation 1, [GSL] represents the length (mm) of the gradient section and [USL] represents the length (mm) of the uniform section.

Abstract: A display device includes a display panel configured to display an image, a data driver configured to supply a data voltage to the display panel, and a timing controller configured to control the data driver, and the data driver pauses a data latch operation.

Abstract: A method for controlling nitrogen oxide (NOx) includes adjusting a flow rate of d gas injected into an arc-type plasma generating device, and identifying a concentration of the generated nitrogen oxide, while adjusting an amount of energy per unit flow rate of the injected gas.

Abstract: A plug connector according to an embodiment of the present disclosure, wherein the housing of the plug connector includes a mating portion extending forward and a latching portion equipped in the housing. The latching portion may include, as a root having a lower end connected to the upper surface of the housing, a root extending to the upper end with the lower end of the route as a first fulcrum to form a cantilever structure; and as a pair of latching arms having a rear end connected to an upper end of the root, a pair of latching arms extending to the front end with the upper end of the root as a second fulcrum to form a pair of hooks. Each front end of the pair of latching arms may include an outward protrusion.