Abstract: A copper die-bonding material for third-generation semiconductor device packaging. The bond is made from an oxidation-resistant copper paste engineered to minimize oxidation and optimize copper sintering density. As a result, dense bonds with high shear strength are formed. The oxidation-resistant copper paste includes copper metal particles and copper nanoparticles, wherein the copper nanoparticles are specifically engineered to have bimodal size distribution. The present invention provides a one-pot composition, which is directly applicable to a metallic substrate to initiate an oxidation-free sintering process, while providing enhanced shear strength and bond strength.

Abstract: A jet-type direct-fired preheating system, comprising a direct-fired furnace and a preheating furnace. The direct-fired furnace comprises a furnace casing, a direct-fired heating area being provided in the furnace casing. The preheating furnace comprises: a furnace body, wherein the upper portion of the furnace body is connected to the upper portion of the direct-fired furnace by means of a communicating pipe, the bottom of the furnace body is provided with a strip steel inlet, a sealing apparatus and a steering roller, an upper collection chamber of direct-fired waste gas and a secondary combustion chamber of direct-fired combustion waste gas are provided at the upper portion in the furnace body, and a lower collection chamber of the direct-fired waste gas is provided at the lower portion in the furnace body; and a plurality of heat exchange and jet bellows units, provided in the furnace body in the height direction of the furnace body, a threading channel being formed in the middle.

Abstract: Provided are a dsRNA, and the use thereof and a preparation method therefor. Further provided are a pharmaceutical composition, a cell or a kit containing the dsRNA. The dsRNA can interfere with the expression of APOC3, and prevent and/or treat related diseases.

Abstract: A data acquisition method relates to the technical field of the Internet and can solve the problem of low data acquisition efficiency. The data acquisition method includes: creating a target database, wherein the target database is configured to store transaction data corresponding to transaction identifiers of a plurality of transaction events in a block chain, and the transaction data includes input data and output data; receiving a first request message, wherein the first request message is configured to request to acquire target transaction data of a target transaction event, and the first request message includes a target transaction identifier of the target transaction event; in response to the first request message, acquiring the target transaction data from the target database by taking the target transaction identifier as an index; and sending the target transaction data.

Abstract: The present invention relates to LPA-targeting siRNA and a conjugate, and specifically relates to LPA-targeting siRNA, a siRNA conjugate, a composition, and a pharmaceutical use thereof. The present invention also relates to a pharmaceutical composition, a cell or a kit comprising the siRNA, and a method for the siRNA and the siRNA conjugate for treating and/or preventing related disorders suffered by a subject.

Abstract: A battery and an electric device are disclosed. The battery includes a housing, a battery module, and a positioning member. A structural beam is arranged inside the housing. The battery module is arranged in the housing. The positioning member is connected to the structural beam for positioning the battery module. The technical solution provided can reduce the manufacturing cost of the battery.

Abstract: Forming an amorphous carbon layer due to lattice distortion of carbon atoms on a surface layer of a single-crystal diamond under a mechanical shear function of a hard abrasive, and generating a chemical reaction between the amorphous carbon layer on the surface layer and the reactive abrasive to achieve quickly removing carbon atoms on the surface layer of the single-crystal diamond due to a local high temperature between abrasive grains and the single-crystal diamond caused by friction at a high speed.

Abstract: An entering-into-box device for placing a target member into a box body are provided by embodiments of the present application. The entering-into-box device includes a main structure, a first positioning assembly, a second positioning assembly and a third positioning assembly. The main structure includes a mounting face; the first positioning assembly is connected to the mounting face; the second positioning assembly is connected to the mounting face and distributed at an outer peripheral side of the first positioning assembly; the third positioning assembly extends in a first direction and is connected to an end of the main structure. The first positioning assembly positions the target member in the first direction; the second positioning assembly positions the target member in a second direction and a third direction; and the third positioning assembly positions the box body at least in the second direction and the third direction.

Abstract: Carbon atoms of a single-crystal diamond and active abrasives are used to produce a chemical reaction to form carbides under a specific grinding condition of no higher than a graphitization temperature, and a hard abrasive is used to remove the carbides.

Abstract: A widefield fluorescence imaging system, comprising: arranging fluorescent microspheres on an image plane of widefield fluorescence microscopy, and collecting, by the widefield fluorescence microscopy, the microsphere images of the fluorescent microspheres; processing, by the computer equipment, the microsphere image, to obtain the half-peak full width value of the fluorescent microspheres; constructing a point diffusion model based on the half-peak full width value in computer equipment; collecting a sample image by the widefield fluorescence microscope, and then processing, by the computer device, the sample image based on a point diffusion model to obtain an enhanced image. The beneficial effect is that by detecting the half-peak full width value of the fluorescent microspheres and using it in the construction process of the point diffusion model, the processing process is simplified and the processing efficiency is improved while achieving better imaging results.

Abstract: The present disclosure relates to the technical field of computers. Disclosed are a methodand apparatus for classifying a blockchain address. A specific implementation of the method includes: acquiring blockchain transaction information, where the blockchain transaction information indicates one or more transaction input addresses and one or more transaction output addresses; constructing a transaction bipartite graph corresponding to the blockchain transaction information; obtaining, according to the transaction bipartite graph and a graph embedding algorithm, address vectors respectively corresponding to the one or more transaction input addresses and the one or more transaction output addresses; and using the address vectors as inputs of an address classifier, so as to classify the one or more transaction input addresses and/or the one or more transaction output addresses by the address classifier. By means of the implementation, the accuracy of blockchain address classification is improved.

Abstract: The present disclosure relates to the technical field of computers, in particular to a method and apparatus for classifying a blockchain address. The method includes: transaction vectors are generated for transaction records corresponding to each blockchain address in a blockchain address set; a corresponding address vector is generated based on the transaction vectors corresponding to a blockchain address to be classified; and the address vector of the blockchain address to be classified is input into a classifier, so as to determine a class of the blockchain address to be classified. By means of the method, equal-length vectors representing the blockchain addresses can be obtained for classification by the classifier, transaction behaviors and association relationships of participating entities in a blockchain are effectively expressed.

Abstract: The present disclosure provides a method and system for selecting an optimal edge computing node in an Internet of vehicle (IoV) environment. The method includes: acquiring and analyzing properties of computing tasks of a vehicle in the IoV environment; acquiring and analyzing properties of different edge computing nodes; computing matching degrees between the properties of the computing tasks and the properties of the nodes; analyzing computing demands of different tasks, and assigning weights to different types of matching degrees; and selecting a node having an optimal sum for products of the matching degrees and the weights as an optimal edge computing node to compute each of the computing tasks of the vehicle.

Abstract: The present invention provides a welding seam tracking sensor, which belongs to the technical field of sensors, and alleviates the problem of detection performance reduction of a sensor. The welding seam tracking sensor comprises a sensor housing, a protection cover and a protection sheet; the protection cover is mounted on the bottom of the sensor housing, an air inlet is provided on the upper surface of the protection cover, and a blowing hole is provided on the bottom of the sensor housing. The air inlet and the blowing hole is closely connected; there is a visual hole and a laser hole in the bottom of the protection cover, a transverse slot is formed inside the protection cover, a socket is opened on the side wall of the protection cover, the protection sheet is inserted into the slot through the socket.

Abstract: A low melting-point porous ceramic material, a sintering temperature of the low melting-point porous ceramic material is 680-830° C., a porosity of the low melting-point porous ceramic material is 24-42%, raw materials of the low melting-point porous ceramic material comprise a binder (i.e., a temporary binder) and powder of raw materials.

Abstract: The present invention provides a welding seam tracking sensor, which belongs to the technical field of sensors, and alleviates the problem of detection performance reduction of a sensor. The welding seam tracking sensor comprises a sensor housing, a protection cover and a protection sheet; the protection cover is mounted on the bottom of the sensor housing, an air inlet is provided on the upper surface of the protection cover, and a blowing hole is provided on the bottom of the sensor housing. The air inlet and the blowing hole is closely connected; there is a visual hole and a laser hole in the bottom of the protection cover, a transverse slot is formed inside the protection cover, a socket is opened on the side wall of the protection cover, the protection sheet is inserted into the slot through the socket.

Abstract: A plasma generating apparatus includes a feed-through and a cylindrical electrode. The feed-through device is configured to feed a medium frequency (MF) power. The cylindrical electrode includes a plurality of through holes in a wall of the cylindrical electrode and is connected to the feed-through device and configured to receive the MF power from the feed-through device and ionize a gas to generate plasma. The cylindrical electrode includes a main body; and an end cover fixed to one end of the main body. The feed-through device includes a feed-through conductor electrically connected to the cylindrical electrode and configured to feed the MF power to the cylindrical electrode, and a feed-through insulating layer covering at least a part of the feed-through conductor.

Abstract: The present disclosure provides a method and system for selecting an optimal edge computing node in an Internet of vehicle (IoV) environment. The method includes: acquiring and analyzing properties of computing tasks of a vehicle in the IoV environment; acquiring and analyzing properties of different edge computing nodes; computing matching degrees between the properties of the computing tasks and the properties of the nodes; analyzing computing demands of different tasks, and assigning weights to different types of matching degrees; and selecting a node having an optimal sum for products of the matching degrees and the weights as an optimal edge computing node to compute each of the computing tasks of the vehicle.