Abstract: The present invention application relates to a spiral heat exchanger and a heat exchange device.

Abstract: Methods for creating a knowledge graph for a video are disclosed. Aspects include obtaining the video, processing the video to extract audio information and video information, and storing the extracted audio information and video information with a timestamp corresponding its occurrence in the video. Aspects also include creating a plurality of groups of the extracted audio information and video information based at least in part on the timestamps and extracting two or more keywords from each of the plurality of groups. Aspects further include identifying a relationship between the two or more keywords based on the extracted audio information and video information and creating a graph having a plurality of nodes and a plurality of links that connect a pair of nodes of the plurality of nodes. Each node corresponds to an extracted keyword and each link corresponds to the identified relationship between the pair of nodes.

Abstract: The present disclosure discloses an integrated weld position detection device based a binaural effect, including a microphone, a microphone holder, a megaphone, a conductive rod, and a current contact nozzle, where the microphone holder is provided with a first through hole in the center; the first through hole allows the conductive rod to pass through and is fixedly connected to the conductive rod; the current contact nozzle is fixedly connected to the conductive rod; the microphone holder is internally provided with two accommodating cavities; the two accommodating cavities are symmetrically distributed on left and right sides of the microphone holder; two microphones are respectively disposed inside the two accommodating cavities; the megaphone is provided with at least two sound transmission channels; first ends of the two sound transmission channels communicate with the two accommodating cavities respectively.

Abstract: The present invention relates to a hydrothermal method for preparing a doped vanadium dioxide powder, the doped powder having a chemical composition of V1-XMXO2, 0<X?0.5, and M is a doping element, which is introduced to control a particle size and a morphology of the doped powder, the doping element M is selected from a group consisting of manganese, iron, cobalt, nickel, copper, zinc, tin, indium, antimony, gallium, germanium, lead and bismuth, the method comprising a step of a precursor treatment of titrating a quadrivalent vanadium aqueous solution with a basic reagent to obtain a precursor suspension, wherein the precursor treatment involves titrating the quadrivalent vanadium aqueous solution until the emergence of the precursor suspension. The preparation methods for the present invention are easy to implement, low in cost, provide high yield, and are suitable for large scale production.

Abstract: A vanadium dioxide coating for intelligent temperature control is formed by mixing a vanadium dioxide powder slurry, a polymer emulsion, and coating additives, and then coating the mixture onto a substrate. The vanadium dioxide powdery slurry comprises vanadium dioxide composite powders and a dispersion medium, the composite powders comprising vanadium dioxide nanopowders having a chemical composition of V1?xMxO2, and the surface of the vanadium dioxide nanopowders being attached to organic modified long-chain molecules, wherein M is a doped element, and 0?x?0.5. Through using the vanadium dioxide powders and the slurry thereof having an organic modified surface, the coating has higher visible light transmittance, can almost completely screen ultraviolet rays, and simultaneously intelligently adjust infrared rays.

Abstract: The present invention relates to a hydrothermal method for preparing a doped vanadium dioxide powder, the doped powder having a chemical composition of V1-XMXO2, 0<X?0.5, and M is a doping element, which is introduced to control a particle size and a morphology of the doped powder, the doping element M is selected from a group consisting of manganese, iron, cobalt, nickel, copper, zinc, tin, indium, antimony, gallium, germanium, lead and bismuth, the method comprising a step of a precursor treatment of titrating a quadrivalent vanadium aqueous solution with a basic reagent to obtain a precursor suspension, wherein the precursor treatment involves titrating the quadrivalent vanadium aqueous solution until the emergence of the precursor suspension. The preparation methods for the present invention are easy to implement, low in cost, provide high yield, and are suitable for large scale production.

Abstract: A vanadium dioxide coating for intelligent temperature control is formed by mixing a vanadium dioxide powder slurry, a polymer emulsion, and coating additives, and then coating the mixture onto a substrate. The vanadium dioxide powdery slurry comprises vanadium dioxide composite powders and a dispersion medium, the composite powders comprising vanadium dioxide nanopowders having a chemical composition of V1?xMxO2, and the surface of the vanadium dioxide nanopowders being attached to organic modified long-chain molecules, wherein M is a doped element, and 0?x?0.5. Through using the vanadium dioxide powders and the slurry thereof having an organic modified surface, the coating has higher visible light transmittance, can almost completely screen ultraviolet rays, and simultaneously intelligently adjust infrared rays.

Abstract: The present invention relates to a doped vanadium dioxide powder, a dispersion, and preparation methods and applications therefor. The chemical composition of the doped vanadium dioxide powder is V1-xMxO2, 0<x?0.5, wherein M is a doping element and said doping element is used to control the size and morphology of the doped vanadium dioxide powder. The vanadium dioxide powder of the present invention has evenly sized particles and exhibits excellent dispersibility. The preparation methods for the present invention are easy to implement, low in cost, provide high yield, and are suitable for large scale production.

Abstract: A method and apparatus for transmitting messages between heterogeneous networks are disclosed. The method includes: receiving an IP multimedia subsystem (IMS) message from an IMS network; converting the format of the IMS message into the format of a non-IMS message and converting the sender terminal ID of the IMS message into the sender terminal ID of the non-IMS message; and sending the non-IMS message that includes the content and sender terminal ID of the non-IMS message to a receiver terminal of the non-IMS message through the home network of the non-IMS message. The disclosure can implement message interworking between an IMS user terminal and a non-IMS user terminal.

Abstract: A method and apparatus for transmitting messages between heterogeneous networks are disclosed. The method includes: receiving an IP multimedia subsystem (IMS) message from an IMS network; converting the format of the IMS message into the format of a non-IMS message and converting the sender terminal ID of the IMS message into the sender terminal ID of the non-IMS message; and sending the non-IMS message that includes the content and sender terminal ID of the non-IMS message to a receiver terminal of the non-IMS message through the home network of the non-IMS message. The disclosure can implement message interworking between an IMS user terminal and a non-IMS user terminal.