Abstract: An apparatus for guaranteeing the integrity of a state database includes a memory for storing one or more instructions, a communication interface for communicating with one or more blockchain nodes and a processor. The processor is configured, by executing the stored one or more instructions, to receive a request to query for a state value, obtain a first state value by querying a state database in response to the request, forward the request to the one or more blockchain nodes to receive a second state value from the one or more blockchain nodes and compare the first state value with the second state value to determine integrity of a state value.

Abstract: A method for preparing a multi-component alloy catalyst on which a catalytic metal is supported includes preparing a carbon composite having a carbon support coated with a cationic polymer, supporting a catalytic metal containing at least two metal elements on the carbon composite to prepare an alloy catalyst precursor, and washing the alloy catalyst precursor to remove the cationic polymer.

Abstract: The present disclosure relates to a lead-free solder alloy composition in which a nanosized ceramic powder additive is added to a lead-free solder alloy of Sn—Cu—Bi, Sn—Ag—Bi or Sn—Ag—Cu—Bi, and a method for preparing the same.

Abstract: A fixing device comprising a fixing belt, a rotating member to be in engagement with an outer circumferential surface of the fixing belt, to form a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt.

Abstract: A carbon-platinum core-shell type catalyst for fuel cells and a method for preparing the same which includes carbon as a core and platinum as a shell which can solve durability-associated problems under proton exchange membrane fuel cells (PEMFC) operation conditions and furthermore tackle manufacturing cost-related problems and process complexity by improving acid resistance through incorporation of a carbon material rather than a transition metal into catalysts.

Abstract: A fixing device comprising a fixing belt, a rotating member to be in engagement with an outer circumferential surface of the fixing belt, to form a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt.

Abstract: A fixing device comprising a fixing belt, a rotating member arranged to be in engagement with an outer circumferential surface of the fixing belt, a nip forming member to press the fixing belt, to form a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and to rotate together with the fixing belt.

Abstract: A driver's communication assistance infra system may include a vehicle terminal device mounted in a vehicle and obtaining mobile phone information related to portable communication devices of a driver and a passenger in the vehicle using a mobile phone pairing; and a connected vehicle center receiving and storing the mobile phone information transmitted from the vehicle terminal device and connecting a calling number to the passenger via a mobile communication network upon receipt of the calling number transmitted by the caller while the driver is driving; and the use of the portable communication device of the driver while driving is switched by the connected vehicle center, thus abiding by the driver's mobile phone regulations.

Abstract: A driver's communication assistance infra system may include a vehicle terminal device mounted in a vehicle and obtaining mobile phone information related to portable communication devices of a driver and a passenger in the vehicle using a mobile phone pairing; and a connected vehicle center receiving and storing the mobile phone information transmitted from the vehicle terminal device and connecting a calling number to the passenger via a mobile communication network upon receipt of the calling number transmitted by the caller while the driver is driving; and the use of the portable communication device of the driver while driving is switched by the connected vehicle center, thus abiding by the driver's mobile phone regulations.

Abstract: A carbon-platinum core-shell type catalyst for fuel cells and a method for preparing the same which includes carbon as a core and platinum as a shell which can solve durability-associated problems under proton exchange membrane fuel cells (PEMFC) operation conditions and furthermore tackle manufacturing cost-related problems and process complexity by improving acid resistance through incorporation of a carbon material rather than a transition metal into catalysts.

Abstract: A method of producing a catalyst including a platinum-transition metal alloy on carbon, more specifically, a method of producing a carbon supported platinum alloy catalyst with high activity and superior durability includes coating a carbon-supported catalyst with an organic polymer as a material for a carbon layer, heat-treating the catalyst under a hydrogen-deficient atmosphere to convert the organic polymer into the carbon layer to prevent growth of catalyst particles caused by heat treatment through the carbon layer, allowing, at the same time, a transition metal supported together with platinum to be diffused into platinum particles to form a catalyst having a core-shell structure including a platinum skin layer on a surface thereof, and removing the carbon layer by ozone treatment after the heat treatment to induce an electrochemical reaction on the surface of the catalyst.

Abstract: A fixing device comprising a fixing belt, a rotating member arranged to be in engagement with an outer circumferential surface of the fixing belt, a nip forming member to press the fixing belt, to form a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and to rotate together with the fixing belt.

Abstract: A method of producing a catalyst including a platinum-transition metal alloy on carbon, more specifically, a method of producing a carbon supported platinum alloy catalyst with high activity and superior durability includes coating a carbon-supported catalyst with an organic polymer as a material for a carbon layer, heat-treating the catalyst under a hydrogen-deficient atmosphere to convert the organic polymer into the carbon layer to prevent growth of catalyst particles caused by heat treatment through the carbon layer, allowing, at the same time, a transition metal supported together with platinum to be diffused into platinum particles to form a catalyst having a core-shell structure including a platinum skin layer on a surface thereof, and removing the carbon layer by ozone treatment after the heat treatment to induce an electrochemical reaction on the surface of the catalyst.

Abstract: A fixing device including fixing belt, a heat source to heat the fixing belt, a rotating member in engagement with an outer circumferential surface of the fixing belt, a nip forming member to pressurize the fixing belt, thereby forming a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and rotated together with the fixing belt. A rotation center of each of the sliding members is on an upstream side compared to a rotation center of the rotating member along a feeding direction of a printing medium, and a shortest distance between a tangential line of an outer circumferential surface of each of the sliding members and the rotation center of the rotating member is equal to or greater than a shortest distance between the fixing nip and the rotation center of the rotating member.

Abstract: A belt type fixing apparatus comprises: a fixing roller; a fixing belt which is installed to be opposite to the fixing roller; a nip forming member which is installed inside the fixing belt and supports the fixing belt so that the fixing belt can contact the fixing roller to form a fixing nip; a pair of sliding members which are installed to support both ends of the fixing belt and are rotated by the fixing belt; a pair of flange members which rotatably support the pair of sliding members; and a heat source which is installed inside the fixing belt and generates heat, wherein the rotation center of the pair of sliding members is located upstream in the transportation direction of printed matter compared to the rotation center of the fixing roller.

Abstract: A belt type fixing apparatus comprises: a fixing roller; a fixing belt which is installed to be opposite to the fixing roller; a nip forming member which is installed inside the fixing belt and supports the fixing belt so that the fixing belt can contact the fixing roller to form a fixing nip; a pair of sliding members which are installed to support both ends of the fixing belt and are rotated by the fixing belt; a pair of flange members which rotatably support the pair of sliding members; and a heat source which is installed inside the fixing belt and generates heat, wherein the rotation center of the pair of sliding members is located upstream in the transportation direction of printed matter compared to the rotation center of the fixing roller.

Abstract: A fixing device including fixing belt, a heat source to heat the fixing belt, a rotating member in engagement with an outer circumferential surface of the fixing belt, a nip forming member to pressurize the fixing belt, thereby forming a fixing nip between the fixing belt and the rotating member, and sliding members on both ends of the fixing belt and rotated together with the fixing belt. A rotation center of each of the sliding members is on an upstream side compared to a rotation center of the rotating member along a feeding direction of a printing medium, and a shortest distance between a tangential line of an outer circumferential surface of each of the sliding members and the rotation center of the rotating member is equal to or greater than a shortest distance between the fixing nip and the rotation center of the rotating member.

Abstract: An apparatus for detecting a pipe length in an air conditioning system includes a detector to detect a signal traveled through a pipe; and a processor to determine a pipe length based on the detected signal.

Abstract: A telematics terminal is provided. The telematics terminal includes a communication unit that is configured to receive weather information from a telematics center and a display unit that is configured to display the received weather information. In addition, a controller is configured to executed at least one item for triggering a function of purifying air inside a vehicle to be displayed when the weather information does not meet a predetermined air pollution standard.

Abstract: A side key connection device of a mobile terminal simplifies a connection structure between a side key and a main circuit board. The mobile terminal includes a side key and a row and column terminal pad. The mobile terminal also includes a side key connection device installed between the side key and the row and column terminal pad. The side key connection device is electrically connected to the side key and the row and column terminal pad. Thereby, by simplifying a connection structure of a side key, a key cost, an assembly process, and a surface mounting cost can be reduced.