Abstract: The present invention relates to a carbon nanotube having an La(100) of less than 7.0 nm when measured by XRD and a specific surface area of 100 m2/g to 196 m2/g, and an electrode and a secondary battery including the carbon nanotube.

Abstract: Provided herein is a built-in speaker module. The built-in speaker module is installed in a housing of an electronic device having a first bottom surface spaced apart from a ground and a second bottom surface installed above the first bottom surface, and includes a speaker installed above the second bottom surface, a first vibration absorbing member interposed between the speaker and the second bottom surface, and a second vibration absorbing member interposed between the first bottom surface and the second bottom surface, wherein sound is emitted from the speaker through openings formed in the first bottom surface and the second bottom surface.

Abstract: Provided is an adduct represented by Formula 1: A.PbY2.Q??(1) wherein A is an organic or inorganic halide, Y is F?, Cl?, Br? or I? as a halogen ion, and Q is a Lewis base including a functional group containing a nitrogen (N), oxygen (O) or sulfur (S) atom with an unshared pair of electrons as an electron pair donor. The Lewis base is maintained more stable in the lead halide adduct. Therefore, the use of the adduct enables the fabrication of a perovskite solar cell with high conversion efficiency.

Abstract: Disclose is a method of manufacturing catalyst ink for a fuel cell, and particularly the method includes removing eluted transition metal from a noble-metal/transition-metal alloy catalyst.

Abstract: Disclosed is a multi-functional probe capable of shielding electromagnetic waves in which an ultrasonic driver circuit and an ultrasonic oscillation element are surrounded by a shielding member in a state in which the ultrasonic driver circuit and the ultrasonic oscillation element are disposed close to each other and which allows a material of a head, to which ultrasonic waves are transmitted, to be changed to a non-conductive material and prevent moisture from being introduced into the probe. To this end, the multi-functional probe includes a cover part accommodating the ultrasonic driver circuit and the ultrasonic oscillation element, a fixing part fixing the ultrasonic driver circuit and the ultrasonic oscillation element in the cover part, and a shield part configured to block electromagnetic waves generated by the ultrasonic driver circuit and the ultrasonic oscillation element.

Abstract: A music sync low frequency stimulator can includes a speaker for outputting a plurality of first sound source signals, a sound source signal separator for separating at least one of the plurality of first sound source signals, a low frequency signal generator for generating a low frequency signal, and a music sync unit for controlling the strength and frequency of a low frequency signal according to at least one of second sound source signals separated by the sound source signal separator.

Abstract: A method of driving a thermal massage device can includes: a pre-stroke step wherein the heating moxibustion device scans the entire spine of the user in order to determine position and shape of the spine of the user and massages the entire spine of the user with a first intensity in order to relax nerves or muscles of the user; a first main stroke step wherein the heating moxibustion device massages the spine while moving according to a first massage pattern for inducing the user's sleep; a second main stroke step wherein the heating moxibustion device massages the spine while moving according to a second massage pattern for maintaining the user's sleep and preparing for sleep escape; and a finish stroke step wherein the heating moxibustion device massages the spine while moving according to a third massage pattern for inducing the user's sleep escape and nerve balance.

Abstract: Provided herein is a built-in speaker module. The built-in speaker module is installed in a housing of an electronic device having a first bottom surface spaced apart from a ground and a second bottom surface installed above the first bottom surface, and includes a speaker installed above the second bottom surface, a first vibration absorbing member interposed between the speaker and the second bottom surface, and a second vibration absorbing member interposed between the first bottom surface and the second bottom surface, wherein sound is emitted from the speaker through openings formed in the first bottom surface and the second bottom surface.

Abstract: Disclosed is a method of manufacturing a membrane-electrode assembly for fuel cells. The method includes (a) admixing a metal catalyst, an ionomer and a first dispersion solvent to prepare a first admixture, (b) heat treating the first admixture prepared in (a) to form an ionomer-fixed metal catalyst, and (c) immersing the ionomer-fixed metal catalyst formed in (b) in a solvent, wherein the solvent in (c) may include one or more selected from the group consisting of ethanol, propanol, and isopropyl alcohol. The membrane-electrode assembly for fuel cells manufactured by the method may have substantially improved durability.

Abstract: A method for manufacturing a fuel cell electrode includes forming a first mixture by mixing a first cation exchange resin, a metal catalyst, and a first solvent, powderizing the first mixture to produce a first catalyst powder comprising the metal catalyst coated with the first cation exchange resin, forming a second mixture by mixing the first catalyst powder, a second cation exchange resin, and a second solvent, powderizing the second mixture to produce a catalyst powder having a core and two or more layers of shells and being coated with the second cation exchange resin, mixing the catalyst powder having the core and two or more layers of shells with a third solvent to produce a catalyst slurry, and coating, using the catalyst slurry, to produce an electrode.

Abstract: An analog/digital audio converting apparatus enables listening to both digital and analog audio signals received from a digital receiving apparatus and analog audio signals input from an external source using the same receiver by providing a formatter capable of converting the analog audio signal into a digital audio signal with the digital broadcasting receiving apparatus.

Abstract: An apparatus for processing data including a data compressor configured to compress ultrasonic data, and store the compressed ultrasonic data in a memory; and a data decompressor configured to read the stored ultrasonic data from the memory, decompress the read ultrasonic data, and transfer the decompressed ultrasonic data to a processor configured to perform beamforming.

Abstract: An apparatus that receives a non-binary polar code through a channel includes a low-complexity decoder and a memory. The low-complexity decoder is configured to selectively calculate first common terms for input symbols in the non-binary polar code other than a first input symbol corresponding to a first target output symbol. The selective calculation uses a lower triangular kernel and log likelihood ratios of the input symbols generated based on a channel characteristic of the channel. The low-complexity decoder is also configured to calculate log likelihood ratios of the first target output symbol using the first common terms and to determine a value of the first target output symbol based on the log likelihood ratios of the first target output symbol. The memory is accessible by the low-complexity decoder and is configured to store the first common terms.

Abstract: An apparatus that receives a non-binary polar code through a channel includes a low-complexity decoder and a memory. The low-complexity decoder is configured to selectively calculate first common terms for input symbols in the non-binary polar code other than a first input symbol corresponding to a first target output symbol. The selective calculation uses a lower triangular kernel and log likelihood ratios of the input symbols generated based on a channel characteristic of the channel. The low-complexity decoder is also configured to calculate log likelihood ratios of the first target output symbol using the first common terms and to determine a value of the first target output symbol based on the log likelihood ratios of the first target output symbol.

Abstract: Disclosed is an apparatus for extracting coffee that includes an input part which receives a command for controlling an operation of the apparatus for extracting coffee; a heater which heats water supplied to a coffee flow path for extracting coffee; a temperature sensor which measures the temperature of the heater; an input voltage acquisition part which acquires an input voltage value applied to the apparatus for extracting coffee; and a control part which determines the possibility of coffee extraction by detecting the operation of the apparatus for extracting coffee, and if it is determined that there is a high possibility of coffee extraction, controls a preheating operation of the heater on the basis of the input voltage value acquired by the input voltage acquisition part and the temperature of the heater measured by the temperature sensor.

Abstract: Provided are a coffee extraction device and a coffee extraction method, which are capable of extracting coffee from a coffee capsule (capsule coffee) and the like. The coffee extraction device can comprise: a coffee extraction unit on which a coffee capsule is to be mounted; a pump for pressurizing water and supplying the same to the coffee extraction unit; a flow rate sensor for measuring the flow rate of water to be supplied to the coffee extraction unit; and a control unit for controlling the operation of the pump on the basis of the flow rate to be sensed at the flow rate sensor.

Abstract: There are provided an ice thermal storage tank having excellent cold water generation efficiency and having a considerably reduced size, and a water cooler having the same. The ice thermal storage tank includes: a tank body accommodating an ice storage liquid cooled according to an ice thermal storage scheme; a cold water generation unit heat-exchanging introduced water with the cooled ice storage liquid to generate cold water; and a circulation unit extracting the ice storage liquid accommodated in the tank body to circulate it within the tank body. The water cooler includes: the thermal storage tank cooling water supplied from the outside; and a water dispensing unit dispensing cooled water from the ice thermal storage tank. Since an ice storage liquid is circulated without using a stirrer, the size of an ice thermal storage tank can be remarkably reduced, and thus, a water cooler is reduced in size.

Abstract: A method for manufacturing an electrode for a fuel cell includes a mixing step of producing a first mixed solution by mixing a carbon support, a metal catalyst, a binder and a first dispersion solvent, a drying step of producing a first mixed solution dried body by drying the first mixed solution, a heat treatment step of heating the first mixed solution dried body, a second mixed solution production step of producing a second mixed solution by dissolving the heat-treated first mixed solution dried body in a second dispersion solvent, and a release paper coating step of producing an electrode by coating the second mixed solution onto a release paper, and then drying the second mixed solution.

Abstract: A thermo-therapeutic apparatus is provided. The thermo-therapeutic apparatus according to one embodiment of the present disclosure 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: Disclosed is a method of manufacturing a membrane-electrode assembly for fuel cells. The method includes (a) admixing a metal catalyst, an ionomer and a first dispersion solvent to prepare a first admixture, (b) heat treating the first admixture prepared in (a) to form an ionomer-fixed metal catalyst, and (c) immersing the ionomer-fixed metal catalyst formed in (b) in a solvent, wherein the solvent in (c) may include one or more selected from the group consisting of ethanol, propanol, and isopropyl alcohol. The membrane-electrode assembly for fuel cells manufactured by the method may have substantially improved durability.