Abstract: An organic electrolyte solution including a metal-ligand coordination compound, wherein the ligand is an organic phosphate compound.

Abstract: This invention relates to a method of, in an eco-friendly manner, preparing a furfuranol-based compound and a 2-furancarboxylic acid-based compound using an ionic liquid as a reaction solvent, which includes reacting a furfural-based compound with a hydroxide of an alkali metal or an alkaline earth metal using an ionic liquid as the solvent, thus obtaining a furfuranol-based compound and a 2-furancarboxylic acid-based compound, and in which water is not used as the reaction solvent, thus preventing the generation of reaction wastewater, and the ionic liquid used as the solvent can be easily recovered and reused.

Abstract: Provided are hexaaza[3.3.3]propellane compounds represented by the following formula (I), which can be used as a main skeleton structure for novel molecular explosives and method for preparing the same: wherein, R is H, C1-C20 alkyl, cycloalkyl, arylalkyl or aryl, which may contain heteroatoms such as oxygen, nitrogen, sulfur, halogen, etc. or unsaturations; and X is H2, O or S.

Abstract: A rechargeable lithium battery includes a negative electrode including a negative active material, a positive electrode including a positive active material, and an electrolyte including LiPO2F2 and a sultone-based compound.

Abstract: An electrolyte for a redox flow battery and a redox flow battery including the electrolyte, the electrolyte including a metal-ligand coordination compound as a cation and an anion containing at least four atoms linked to each other by a straight chain in a certain direction.

Abstract: An intelligent vehicle seat support system may include an air storage tank for storing air and supplying the air when needed, a plurality of air cushions disposed in a vehicle seat in contact with a human body, and configured to selectively expand and shrink depending on the air flow, a pressure sensor for measuring air pressure of each air cushion, an air control valve disposed between the air storage tank and the air cushions, and configured to control the air that flows into each of the air cushions, and a control unit for, when a passenger takes the vehicle seat, automatically controlling the air control valve so that it starts injecting air into each of the air cushions, and, when the air pressure of each air cushion is higher than a preset reference value, controlling the air control valve so that it stops injecting air into each air cushion.

Abstract: Disclosed is an active sonar system capable of estimating a direction and a range of a target by using a sound pulse. A target range error can be estimated by the active sonar system, by applying a principle that a sound pulse used to detect an underwater target with consideration of a vertical structure of a sound velocity in water is reflected and refracted through a multipath not a linear path.

Abstract: Disclosed is an electrolyte for a lithium secondary battery. The electrolyte includes a non-aqueous solvent and a sulfone based organic compound represented by the following Formulae (I), (II), or (III), or a mixture thereof: where R and R? are independently selected from the group consisting of primary alkyl groups, secondary alkyl groups, tertiary alkyl groups, alkenyl groups, aryl groups; halogen substituted primary alkyl groups, halogen substituted secondary alkyl groups, halogen substituted tertiary alkyl groups, halogen substituted alkenyl groups, and halogen substituted aryl groups, and n is from 0 to 3.

Abstract: The present invention relates to an apparatus and method for managing files in a distributed storage system. The apparatus and method for managing a file in a distributed storage system according to the present invention counts the number of inquiries on a file requested by a client; selects the file as a hot file if the number of inquiries counted in a certain counting period is larger than a hot file selection threshold value; and increases the number of copies of the file selected as a hot file or stores the file selected as a hot file in a storage device having a relatively good performance.

Abstract: The present invention relates to an apparatus and method for managing a file in a distributed storage system. The apparatus and method for managing a file in a distributed storage system calculates a retention time of the file based on at least one of a current time, a file creation time, a file modification time and a recent file inquiry time; selects the file as an archive file if the retention time of the file is larger than a predetermined reference time; and relocates an original file and some or all of copy files of the file selected as an archive file from an active server to an archive server or from an active disk to an archive disk.

Abstract: The present invention relates to an apparatus and method for eliminating duplication of a file in a distributed storage system. The apparatus and method for eliminating duplication of a file in a distributed storage system according to the present invention calculates a hash value of each chunk for an active file; calculates a secondary hash value by adding the hash values calculated for respective chunks; examines duplication of the file using the hash value of each chunk and the secondary hash value; and eliminates a duplicated file depending on a result of the examination.

Abstract: Disclosed is an active sonar system capable of estimating a direction and a range of a target by using a sound pulse. A target range error can be estimated by the active sonar system, by applying a principle that a sound pulse used to detect an underwater target with consideration of a vertical structure of a sound velocity in water is reflected and refracted through a multipath not a linear path.

Abstract: An intelligent vehicle seat support system may include an air storage tank for storing air and supplying the air when needed, a plurality of air cushions disposed in a vehicle seat in contact with a human body, and configured to selectively expand and shrink depending on the air flow, a pressure sensor for measuring air pressure of each air cushion, an air control valve disposed between the air storage tank and the air cushions, and configured to control the air that flows into each of the air cushions, and a control unit for, when a passenger takes the vehicle seat, automatically controlling the air control valve so that it starts injecting air into each of the air cushions, and, when the air pressure of each air cushion is higher than a preset reference value, controlling the air control valve so that it stops injecting air into each air cushion.

Abstract: The present invention relates to a sensory perception type power switch for a vehicle perceiving the amount of change according to the respective operational state tactilely rather than visually for operating equipment such as various lamps, an air-conditioner or, a lumbar support installed in a seat back.

Abstract: The present invention provides a novel process for highly selective preparation of 2,6-dialkyltetralin, a key precursor for 2,6-dimethylnaphthalene (2,6-DMN), which does not require an extra step for purifying various isomers obtained from the conventional processes for 2,6-DMN. The present invention is advantageous to improve the synthetic yield, to simplify the operation and thus to reduce the production cost, since different starting materials and different pathways are exploited and thus the additional steps are not necessary.

Abstract: Disclosed is a nonaqueous electrolyte for a lithium-ion secondary battery that contains an addictive for preventing destruction of a solid electrolyte interface (SEI) layer and hence decomposition of the electrolyte that may cause generation of a gas, thereby preventing swelling of the battery caused by the gas generated from the inside of the battery at a high temperature. More specifically, the present invention provides an electrolyte that includes, as an additive, 2-sulfobenzoic acid cyclic anhydride represented by the formula 1: The electrolyte contains the additive in an amount of 0.1 to 10.0 wt. %.

Abstract: The present invention relates to a sensory perception type power switch for a vehicle perceiving the amount of change according to the respective operational state tactilely rather than visually for operating equipment such as various lamps, an air-conditioner or, a lumbar support installed in a seat back.

Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.

Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.

Abstract: A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein R1 to R12 are each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.