Abstract: An air compressor according to an aspect of the present invention comprises: a housing; a rotating shaft which is disposed in the housing; a compression unit which is connected to the rotating shaft to compress and discharge inlet air; a motor unit which drives the rotating shaft; a control board which controls the motor unit; and a filter unit which filters out noise from external power and supplies the external power to the control board, wherein the housing includes a first cooling flow channel for cooling the motor unit and a second cooling flow channel for cooling the filter unit, and the first cooling flow channel communicates with the second cooling flow channel.

Abstract: A surface plasmon resonance imaging apparatus is provided. The surface plasmon resonance imaging apparatus includes a light irradiation unit configured to irradiate polarized light onto a metal coating film provided on one surface of a prism, a light modulator configured to spatially pattern-encode light reflected by the metal coating film and the prism, a light detector configured to detect a pattern-encoded light signal, obtained through pattern-encoding by the light modulator, as a spectral signal, a signal processor configured to spatially decode the spectral signal and analyze a decoded spectral signal to generate characteristic data of a sample provided on the metal coating film, and an output unit configured to output the characteristic data of the sample as a two-dimensional (2D) image.

Abstract: Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on an axis to define a core and an outer circumference. The first electrode includes an uncoated portion at a long side end thereof and exposed out of the separator along a winding axis direction of the electrode assembly. A part of the uncoated portion is bent in a radial direction of the electrode assembly to form a bending surface region that includes overlapping layers of the uncoated portion, and in a partial region of the bending surface region, the number of stacked layers of the uncoated portion is 10 or more in the winding axis direction of the electrode assembly.

Abstract: Provided is a Raman scattering measurement apparatus including a light source which emits light to smoke particles, a filter configured to block light which is incident to the smoke particles and passes through the particle and to allow Raman scattered light to pass therethrough, and a photodetector which detects the Raman scattered light passing through the filter in order to distinguish fire smoke generated due to a true fire from non-fire smoke generated due to daily life or industrial activity. The present invention also provides a fire determination apparatus including a unit which reads a Raman shift from Raman scattered light detected by the photodetector of the Raman scattering measurement apparatus, estimates a smoke component from the read Raman shift, and determines fire/non-fire from the estimated smoke component and a method thereof.

Abstract: Air compressor in which the arrangement structure between a filter part and a discharge resistor reduces interference between the filter part and the discharge resistor and increases the space utilization of the filter part, making the air compressor more compact. The air compressor comprises a housing with a rotary shaft disposed inside it; a compression part connected to the rotary shaft which compresses and discharges introduced air; a motor part driving the rotary shaft; a control board for controlling the motor part, and the filter part which filters noise of external power and supplies the external power to the control board, wherein the filter part includes a capacitor assembly connected to an external power source, a transistor connected to the control board, a current sensor assembly connected to the transistor, and a discharge resistor connected to the capacitor assembly and discharges the residual charge in the capacitor assembly.

Abstract: An apparatus for estimating a camera pose according to an embodiment of the present disclosure includes a similar image searcher, a clusterer, and an estimator. The similar image searcher searches for a plurality of images similar to an input image, from among a plurality of previously-stored images, based on the input image. The clusterer creates a cluster including at least some similar images meeting predetermined conditions, from among the plurality of similar images, based on viewpoint data tagged to each of the plurality of similar images. The estimator estimates a pose of a camera that has generated the input image, based on the cluster.

Abstract: The disclosure relates to a non-dispersive infrared (NDIR) gas sensor which detects the concentration of gas with a simple structure and method by manufacturing an optical waveguide with a gas-permeable polymer material instead of a conventional cavity or chamber type. An optical signal travels through the optical waveguide of gas-permeable polymer by total internal reflection, and the gas naturally penetrates the optical waveguide without the use of separate inlet and outlet openings, so that the optical signal and gas particles come into contact with each other within the optical waveguide. Since the optical signal detected by a photodetector at the other end of the optical waveguide after traveling while contacting the gas particles has properties changed according to the concentration of the gas which they have contacted in the optical waveguide, it is possible to measure the concentration of a specific gas from the detected optical signal.

Abstract: A cathode and a battery including a cathode active material including a layer-structured material having a composition of xLi2MO3-(1-x)LiMeO2; and a metal oxide having a perovskite structure. The cathode active material may have improved structural stability by intermixing a metal oxide having a similar crystalline structure with the layer-structured material, and thus, life and capacity characteristics of a cathode and a lithium battery including the metal oxide may be improved.

Abstract: A composite cathode active material including an overlithiated metal oxide having a layered structure, a material having an olivine structure, and one or more of: an inorganic material, and nitrogen atoms doped in the material having an olivine structure. The inorganic material includes a nitride or carbide of a non-transition metal. The composite cathode active material may be included in a cathode, and the cathode may be included in a lithium battery.

Abstract: The present invention includes an apparatus and method of making and using a composition that includes the replacement of electrochemically inactive additives with a conductive and electrochemically active polymer that is attached so as to make an electrical contract to the redox couples of the electrochemically active oxide particles into/from which Lithium is reversibly inserted/extracted in a battery discharge/charge cycle.

Abstract: An acupressure apparatus includes a tub configured to receive the user's feet for acupressure treatment, an acupressure station having a pair of designated foot placing areas for facilitating accurate positioning of the feet on the acupressure station, a plurality of upward projections formed on an upper surface of the acupressure station, and a plurality of watering holes formed around the projections, and a water supply conduit connected to the bottom wall of the tub for supplying compressed water by operation of a water pump. The watering holes formed in the acupressure station are directed to acupressure points of the feet such that the compressed water delivered through the watering holes provides acupressure stimulations to the acupressure points of the feet.

Abstract: An acupressure apparatus includes a tub configured to receive the user's feet for acupressure treatment, an acupressure station having a pair of designated foot placing areas for facilitating accurate positioning of the feet on the acupressure station, a plurality of upward projections formed on an upper surface of the acupressure station, and a plurality of watering holes formed around the projections, and a water supply conduit connected to the bottom wall of the tub for supplying compressed water by operation of a water pump. The watering holes formed in the acupressure station are directed to acupressure points of the feet such that the compressed water delivered through the watering holes provides acupressure stimulations to the acupressure points of the feet.

Abstract: A positive electrode having a surface on which a positive electrode active material composition including a positive electrode active material is formed. The positive electrode includes a first lithium compound having an open-circuit voltage less than 3V with respect to lithium metal, and a second lithium compound having an open-circuit voltage of 3 V or greater with respect to lithium metal. The first lithium compound includes a solid solution represented by Formula 1: xLizM1-yM?yO2-(1?x)LiaM?bMocO3.

Abstract: A cathode and a lithium battery including the cathode have improved electrical characteristics. The cathode includes a cathode active material composition including a conducting agent, a binder, and a cathode active material, wherein the cathode active material includes a first lithium compound and a second lithium compound, the first lithium compound having an open-circuit voltage greater than an open-circuit voltage of the second lithium compound, and wherein the second lithium compound includes a metal oxide coating layer.

Abstract: A cathode and a lithium battery including the cathode include a cathode active material that is obtained from a compound, Li2MoO3, in which molybdenum is doped or partially substituted with a heterogeneous element. The cathode active material includes a compound represented by LixMyMozO3, in which M is a dopant that decreases the mobility of the molybdenum upon charging and discharging of the battery. Accordingly, the cathode has improved electrical characteristics.

Abstract: A cathode active material, a cathode including the cathode active material, and a lithium battery including the cathode. The cathode active material includes a lithium composite oxide and a lithium titanium oxide, wherein the lithium titanium oxide includes titanium having an average oxidation number of 4-y (0<y<2). The lithium titanium oxide is reduced.

Abstract: An anode includes an anode active material including a lithium titanium oxide, a binder, and 0 to about 2 parts by weight of a carbon-based conductive agent based on 100 parts by weight of the lithium titanium oxide.

Abstract: Provided are a composite including a lithium titanium oxide and a bismuth titanium oxide, a method of manufacturing the composite, an anode active material including the composite, an anode including the anode active material, and a lithium secondary battery having improved cell performance by including the anode.

Abstract: A cathode active material includes a core including a material having an olivine structure, and a nitrogen atom doped into at least a portion of the core.

Abstract: A cathode, a method of preparing the same, and a lithium battery including the cathode. The cathode includes: a current collector; a first cathode active material layer disposed on the current collector; and a second cathode active material layer disposed on the first cathode active material layer, wherein the first cathode active material layer comprises a lithium transition metal oxide having a layered structure, and the second cathode active material layer comprises a lithium transition metal oxide having a spinel structure and an average working potential of 4.5 V or more.