Abstract: The present invention provides a method of preparing a polyester-based polymer and a polyester-based polymer prepared by the method. The method of preparing the polyester-based polymer includes a prepolymerization step of polymerizing a dicarboxylic acid compound (A), a diol compound (B), and a carbodiimide compound (C) at 160-220° C. to produce a prepolymer; and a condensation polymerization step of performing a condensation polymerization of the prepolymer at 200-250° C., under a vacuum pressure of 0.1 to 2 Torr.

Abstract: There is provided a method of preparation for a biodegradable co-polyester resin with improved hydrolysis resistance, the method including performing a primary esterification reaction between an aliphatic dihydroxy compound and an aliphatic dicarboxylic acid compound, and performing a secondary transesterification reaction with addition of an aromatic dicarboxylate after the primary esterification reaction, in which a short chain alcohol-type branching agent is added to the primary esterification reaction or to the secondary transesterification reaction.

Abstract: There are provided a resin composition for foaming including a biodegradable resin and a foamed article made thereof. The resin composition for foaming according to the present invention includes an ethylene-vinyl acetate resin, a biodegradable polyester resin containing a monomer of a double bond compound, a cross-linking agent, a co-crosslinking agent, a filler, and a foaming agent. In the resin composition, the double bond in the biodegradable polyester resin can be chemically cross-linked to the ethylene-vinyl acetate resin by a cross-linking agent, so that a compatibility with the ethylene-vinyl acetate resin can be improved, processability (mold releasability) during a mixing and melting process can be improved, and a foaming property and a mechanical property of a foamed article can be remarkably improved.

Abstract: An electrochemical test cell, containing an anode comprising a metal as an active component; a cathode comprising a porous chemically inert tube containing an active material compatible with the metal of the anode; and an electrolyte; wherein the only metal in contact with the electrolyte is the metal of the anode, is provided. This test cell is useful in a method to evaluate various combinations of materials for suitability as a combination for preparation of a battery.

Abstract: Disclosed herein is a display device including a touch panel, including: a transparent substrate; an electrode pattern formed as a mesh pattern on the transparent substrate; and a display unit correspondingly coupled to the electrode pattern, wherein a ratio of a pitch of the electrode pattern to a pitch of a pixel of the display unit is 1:0.3 to 1:0.5. Therefore, the Moire phenomenon that may be generated between the electrode pattern of the touch panel and the pixel pattern of the display unit coupled to the touch panel may be prevented.

Abstract: Disclosed herein is a touch sensor, including: a transparent substrate; and an electrode pattern formed on the transparent substrate, wherein the electrode pattern is formed in a mesh pattern and the mesh pattern includes at least one of the irregular unit patterns. According to the preferred embodiment of the present invention, the entire visibility of the touch sensor may be improved by alleviating recognition by a user for the electrode pattern of the touch sensor.

Abstract: An airfoil-magnetic hybrid bearing, which is a combination of a magnetic bearing and airfoil bearing includes a housing, an airfoil bearing, a magnetic bearing, coils, and a coupling segment. The housing is around a rotating shaft of a rotation device. The airfoil bearing is positioned between the housing and the rotating shaft to form dynamic pressure to levitate the rotating shaft during rotation of the rotating shaft. The magnetic bearing includes cores positioned radially between inner surface of the housing and outer surface of the airfoil bearing. The cores are projected to the center of the rotating shaft. The coils wound to the cores to levitate the rotating shaft using a magnetic attractive force generated by a current application thereto. The coupling segment is configured to couple the airfoil bearing to the magnetic bearing directly.

Abstract: Disclosed herein is a touch panel including: a transparent substrate and an electrode pattern formed on one surface of the transparent substrate, wherein the transparent substrate has concave-convex portions formed on one surface thereof, and the electrode pattern is formed in a shape corresponding to those of the concave-convex portions on the concave-convex portions. According to the present invention, the concave-convex portions are formed on the transparent substrate to make heights of electrode patterns irregular, thereby making it possible to prevent a moiré phenomenon generated when a mesh pattern is used as the electrode pattern.

Abstract: Disclosed herein are a touch panel and a method for manufacturing the same, the touch panel including: a transparent substrate; a black matrix pattern provided on an upper surface of the transparent substrate, the black matrix pattern having a plurality of openings; first electrode patterns provided on the black matrix pattern; and second electrode patterns provided on a lower surface of the transparent substrate, so that the touch panel includes the first electrode patterns formed of a silver salt, over the black matrix pattern having the plurality of openings, and thus can prevent a moiré phenomenon due to a metal material and improve visibility.

Abstract: The present invention relates to a method of economically preparing paraffin compounds corresponding to gasoline fuel or lubricating base oil using volatile fatty acids (VFAs) derived from biomass.

Abstract: Disclosed herein is a touch panel including: an electrode pattern configured of a combination of rectangular patterns of which first and second internal angles facing each other are the same as each other and remaining third and fourth internal angles facing each other except for the first and second internal angles are different from each other.

Abstract: Disclosed herein is a touch panel, including: an electrode formed in a pattern including rectangles arranged while sharing sides, the rectangle includes a first side and a second side which are parallel and a third side and a fourth side which are parallel, the first side being longer than the third side, and in the rectangles, among the rectangles, a first side of a first rectangle and a third side of a second rectangle form a straight angle, a first side of the third rectangle and a third side of a fourth rectangle form the straight angle, and a first side of the second rectangle and a fourth side of the third rectangle form the straight angle.

Abstract: Disclosed herein is a touch panel, including an electrode formed in a pattern including continuous rectangles, and in first rectangles which are continuous in a first direction among the rectangles, first common sides and second common sides are alternately formed among the first rectangles, in second rectangles which are continuous in a second direction among the rectangles, third common sides and fourth common sides are alternately formed among the second rectangles, and the first common sides, the second common sides, the third common sides, and the fourth common sides are parallel to each other and have the same length as each other.

Abstract: Disclosed herein is a touch panel including an electrode pattern formed by forming imaginary lattices configured of same polygons as each other, randomly generating predetermined points in the polygons, and connecting the predetermined points and vertexes of the polygons to each other. The electrode pattern is irregularly formed, thereby making it possible to prevent a Moire phenomenon and improve visibility.

Abstract: Disclosed herein are a touch panel and a method for manufacturing the same, the touch panel including a transparent substrate; and a conductive part formed on the transparent substrate, wherein the conductive part is formed by coating silver salt emulsion layers having different photo-sensitivities on the transparent substrate such that the silver salt emulsion layers are laminated in multiple layers, followed by exposing/developing, so that electrical conductivity of the conductive part can be significantly improved.

Abstract: A power line communication method is provided, which divides the entire interval for transmitting power and data signals into a power transmission interval and a data transmission interval, and carries one or a plurality of data signals at the data transmission interval in the divided intervals.

Abstract: The present invention relates to a novel Mg—Ti—Al composite metal hydroxide and to production method therefor. Mg—Ti—Al composite hydroxide particles can be obtained by subjecting a solution containing a magnesium salt and a titanium salt to ultrasound processing and carrying out a high-temperature and high-pressure reaction with a solution containing an aluminum salt in the proportions of the metal elements comprised in the Mg—Ti—Al composite metal hydroxide, thereby giving the advantageous effects that the halogen capturing ability is excellent and, when used in a polymer, degradation and early-staining prevention properties and transparency are outstanding.

Abstract: An electrochemical device, having an anode containing magnesium; a cathode stable to a voltage of at least 3.2 V relative to a magnesium reference; and an electrolyte containing a solvent and a LiCl complex of a magnesium halide salt of a sterically hindered secondary amine is provided. In a preferred embodiment the electrolyte contains tetrahydrofuran and 2,2,6,6-tetramethylpiperidinyl-magnesium chloride-lithium chloride complex.

Abstract: Disclosed is a nano-sized Cu based catalyst and a method of preparing the same including dissolving, in an aqueous solution, a first component comprising a Cu precursor, a second component precursor comprising one or more selected from the group consisting of a transition metal, an alkaline earth metal and a Group IIIb metal, and a third component precursor comprising one or more selected from the group consisting of alumina, silica, silica-alumina, magnesia, titania, zirconia and carbon and then performing stirring; precipitating the stirred mixture solution using Na2CO3 and NaOH to form a catalyst precursor precipitate; and washing and filtering the formed catalyst precursor precipitate. Also a method of preparing alcohol is provided, including reacting hydrogen with carboxylic acid including a single acid or an acid mixture of two or more acids derived from a microorganism fermented solution, using the nano-sized Cu based catalyst.