Abstract: A graft copolymer and a preparation method and use thereof. The method for preparing a graft copolymer includes: dissolving an N-ethyl-2-pyrrolidinone-substituted flavan-3-ol (EPSF) and a starch in a polar organic solvent, to obtain a raw material solution; and mixing the raw material solution with ascorbic acid and hydrogen peroxide to obtain a mixture, and subjecting the mixture to a grafting reaction, to obtain the graft copolymer.

Abstract: An effective capacity estimation method and system for super capacitor energy storage systems are provided. The method includes: establishing a nonlinear electrical model of supercapacitor cell and an equivalent electrical model of a supercapacitor system; obtaining the first test data by charging the supercapacitor cell; based on the first test data, setting the initial value of parameters of the nonlinear electrical model of the supercapacitor cell by a preset algorithm; using a least-square method to identify the parameters of the nonlinear electrical model of the supercapacitor cell; obtaining electrical parameters of the equivalent electrical model of the supercapacitor system except the connection resistance parameters, carrying out a charging test of the supercapacitor system to obtain the connection resistance parameters, and estimating an effective capacity of the supercapacitor energy storage system based on the equivalent electrical model of the supercapacitor system after parameter identification.

Abstract: Provided is a nucleic acid construct, including the following elements: a transposon 3? terminal repeat, first poly A sequence, an insulator sequence having a transcription termination function, a transposon 5? terminal repeat, a transposase coding sequence, and a promoter that controls the expression of the transposase. Also provided are a host cell or pharmaceutical composition including said nucleic acid construct, and a use thereof.

Abstract: A light reflective coating for an audio product, including the following parts by weight of constituents: 15-35 parts by weight of resin, 15-35 parts by weight of glass beads, 20-40 parts by weight of aluminum beads, 5-15 parts by weight of a solidifying agent, 10-25 parts by weight of a solvent and 1-8 parts by weight of an additive. The present invention further includes a method for preparing the light reflective coating for an audio product, adopts organic macromolecular materials having good comprehensive performances to perform optimization and combination, and improves the light reflective performance of the combination. The coating prepared with the method of the present invention has a flat, fine and smooth surface, has good gloss retention, and can satisfy the use requirements of an audio product coating for anti-corrosion, anti-weathering and the like.

Abstract: A method for processing device failure includes: detecting, by a target standby device associated with a target shared storage device, an operating status of a target control device that manages the target shared storage device; if the target control device fails, sending, by the target standby device, a management request to the target shared storage device, and sending, by the target standby device, a replacement request for the target control device to the cluster management node; setting, by the target shared storage device, the target standby device as a local management device; and determining, by the cluster management node, that the target standby device is a replacement device of the target control device.

Abstract: The present disclosure provides an edge application management method and a system. The method includes: generating an edge application template for deploying an edge application managed by an edge cloud node, the edge application template including resource configuration information for deploying an edge cloud node resource, and system application data of an elastic cloud server in a cloud data center; synchronizing the system application data to an edge cloud node to be deployed; and deploying a resource of the edge cloud node to be deployed according to the resource configuration information to realize management of the edge application.

Abstract: The present disclosure provides an edge application management method and a system. The method includes: generating an edge application template for deploying an edge application managed by an edge cloud node, the edge application template including resource configuration information for deploying an edge cloud node resource, and system application data of an elastic cloud server in a cloud data center; synchronizing the system application data to an edge cloud node to be deployed; and deploying a resource of the edge cloud node to be deployed according to the resource configuration information to realize management of the edge application.

Abstract: A condenser includes an air duct defining an air channel therein; an air supply device fixedly connected to the air duct and a condensation member having a refrigerant inlet and a refrigerant outlet, the condensation member being at least partly disposed within the air channel. The condensation member includes a plurality of first condensation pipe segments consecutively arranged in multiple layers in an axial direction of the air duct and communicated with each other, each of the first condensation pipe segments is spirally formed by a first condensation pipe into a respective torus, a spiral line of said each first condensation pipe segments is located in a surface of the respective torus, and the respective torus formed in a first layer of the multiple layers is stacked above the respective torus formed in a second layer of the multiple layers along the axial direction of the air duct.

Abstract: A light reflective coating for an audio product, including the following parts by weight of constituents: 15-35 parts by weight of resin, 15-35 parts by weight of glass beads, 20-40 parts by weight of aluminum beads, 5-15 parts by weight of a solidifying agent, 10-25 parts by weight of a solvent and 1-8 parts by weight of an additive. The present invention further includes a method for preparing the light reflective coating for an audio product, adopts organic macromolecular materials having good comprehensive performances to perform optimization and combination, and improves the light reflective performance of the combination. The coating prepared with the method of the present invention has a flat, fine and smooth surface, has good gloss retention, and can satisfy the use requirements of an audio product coating for anti-corrosion, anti-weathering and the like.

Abstract: Provided are a condenser (100) and a refrigerator having same. The condenser (100) comprises: an air duct (10), with an air channel (11) being defined in the air duct (10); an air supply device (20), with the air supply device (20) being fixedly connected to the air duct (10); and a condensation member (30), with the condensation member (30) having a refrigerant inlet (a) and a refrigerant outlet (b), and the condensation member (30) being at least partially located in the air channel (11).