POROUS POLYMER MEMBRANE, PREPARATION METHOD THEREFOR, AND USE OF SAME IN GEL POLYMER ELECTROLYTE

The present invention provides a porous polymer membrane obtained through the use of a polyurethane-treated polyvinylacetal polymer, and a preparation method for said porous polymer membrane. Through-pores are evenly distributed across the porous membrane, giving said membrane excellent electrolytic liquid adsorption capabilities and allowing for a liquid adsorption rate of 300% or higher. Electrolytic liquid adsorption and swelling results in system gelation, and the porous membrane and gel system can thereby remain stable for a long period of time. The near-liquid electrolyte in the present invention has an average electro-conductivity value of 1.0 x 10-3S/cm, an electrochemical stability window of 2.0V-5.0V, markedly improved mechanical properties and electrocompatibility, and can act as a gel polymer electrolyte, thereby enhancing battery safety. The invention also renders unnecessary the use of a liquid electrolyte system or other battery system diaphragm as a support.

APPLICATION OF MICROCYSTIN-RR IN PREPARATION OF DRUGS FOR PREVENTING OR TREATING RENAL FIBROSIS DISEASES

A medical application of natural cyclic heptapeptide molecule microcystin-RR in preventing and treating renal fibrosis diseases. The verified microcystin-RR is the microcystin of which the second and fourth amino acids of the cyclic heptapeptide structure are arginine. The microcystin-RR has prevention and treatment effects on pathogenesis of the renal fibrosis caused by ureteral obstruction. It is also verified that microcystin-RR intervention can change kidney tissue microenvironment caused by the ureteral obstruction, inhibit fibroblast-myofibroblast differentiation (FMD) of kidney tissue cells and generate an anti-renal fibrosis medical effect.

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Transformer noise reduction system based on direct current magnetic bias suppression

The invention relates to a transformer noise reduction system based on DC magnetic bias suppression, and the system comprises a three-phase current signal collection module which obtains a three-phase current signal of a transformer power system; the signal processing and control module is used for carrying out vector addition on the three-phase current signal to obtain a direct-current magnetic bias current signal; the direct current compensation generation module generates corresponding reverse direct current according to the direct current magnetic bias current signal, and the influence of direct current magnetic bias on the transformer is counteracted through the reverse direct current; and the harmonic compensation generation module injects a three-phase current signal into the transformer according to the direct-current magnetic bias current signal so as to suppress the harmonic component of the transformer. Transformer signals without harmonic components and direct-current magnetic ...

Semi-supervised medical image segmentation method combining feature similarity and reliable region enhancement

The invention provides a semi-supervised medical image segmentation method combining feature similarity and reliable region enhancement, and the method comprises the steps: employing a dual-network model as a basic network, and carrying out the initial feature extraction and model training of an input labeled image and an input unlabeled image; deep features and segmentation features extracted from the dual-network model are sent to a feature similarity module, label-free data deep feature information is mined in the feature similarity module through a self-supervision method, and the ability of the deep features to predict true value labels is associated with the segmentation features; mapping the similarity relationship of the deep features to the segmentation features; on the basis of a dual-network model, the advantages of mutual learning of dual networks are fused to obtain a high-confidence network model, a three-network model is formed to generate pseudo tags, and then reliable pseudo ...

POROUS POLYMER MEMBRANE, PREPARATION METHOD THEREFOR, AND USE OF SAME IN GEL POLYMER ELECTROLYTE

The present invention provides a porous polymer membrane obtained through the use of a polyurethane-treated polyvinylacetal polymer, and a preparation method for said porous polymer membrane. Through-pores are evenly distributed across the porous membrane, giving said membrane excellent electrolytic liquid adsorption capabilities and allowing for a liquid adsorption rate of 300% or higher. Electrolytic liquid adsorption and swelling results in system gelation, and the porous membrane and gel system can thereby remain stable for a long period of time. The near-liquid electrolyte in the present invention has an average electro-conductivity value of 1.0 x 10-3S/cm, an electrochemical stability window of 2.0V-5.0V, markedly improved mechanical properties and electrocompatibility, and can act as a gel polymer electrolyte, thereby enhancing battery safety. The invention also renders unnecessary the use of a liquid electrolyte system or other battery system diaphragm as a support.

Silicon wafer cutting equipment for manufacturing solar cell panel

The invention relates to the technical field of silicon wafer processing, in particular to silicon wafer cutting equipment for manufacturing a solar cell panel, which effectively improves the stress balance of a silicon rod and improves the smoothness of a cut end face by adopting a combined cutting mode of a multi-direction synchronous cutting mode of the silicon rod and a self-rotation cutting mode of the silicon rod, thereby improving the cutting quality. Meanwhile, the silicon rod is matched to automatically rotate, the rotating directions of the conveying shafts on the two U-shaped bed plates are opposite, cutting lines on the left side and the right side of the silicon rod can be conveyed in the same direction, the side, entering the silicon rod, of each cutting line is a line inlet end, and the side, conveying out of the silicon rod, of each cutting line is a line outlet end; and the wire inlet end on one side of the silicon rod can be used as the wire outlet end on the other side ...

Boundary frame weak supervision image segmentation method based on foreground and background matching

The invention provides a bounding box weak supervision image segmentation method based on foreground and background matching. The method comprises the following steps: sending an LAB image to a full supervision segmentation network to obtain a foreground segmentation result; sending the bounding box and the foreground segmentation result into a mask projection loss optimization segmentation network; the foreground segmentation results of the pixel point pairs are restrained to be consistent by using domain pixel consistency loss; a pixel representation module is used for generating pixel feature representation capable of representing semantics for each pixel point in an input image, and pixel feature representation with high consistency loss constraint similarity is used for representing that pixel features need to approach in space; defining foreground and background areas according to a bounding box for the feature representation, establishing foreground and background models for the ...

Pumping power generation device and power generation method using abandoned mine

The invention discloses a water pumping power generation device and method utilizing a waste mine. The water pumping power generation device comprises a base, symmetrically-distributed blades are fixedly connected to the top of the base, a rotating shaft is rotationally connected between the two sets of blades, and symmetrically-distributed connecting frames are fixedly connected to the outer wall of the rotating shaft in a sleeving mode. A lifting pump lifts water in a waste well to a connecting pipe through a lifting pipe and a water outlet pipe, then the water is shunted through a conveying pipe, the kinetic energy of water outflow is improved through inclination of the conveying pipe, water impacts blades to enable a rotating shaft to rotate, then the water is poured down through an inclined face of the rear section of a base, and the water is guided to rotating blades in a water collecting cover through a drainage plate; the rotating blades rotate to enable the driven shaft to rotate ...

Electric power construction site safety supervision and management equipment

The invention discloses power construction site safety supervision and management equipment, and relates to the technical field of power system construction supervision equipment.The power construction site safety supervision and management equipment comprises a frame, a first motor is arranged on the inner side wall of the frame, a connecting rod is rotationally connected to one side face of the frame, an elastic plate is arranged on the outer surface of the frame, and a second motor is arranged on the inner side wall of the frame; a sliding block is slidably connected to the inner side wall of the sliding groove, a multi-stage telescopic rod is arranged on the upper surface of the sliding block, a mounting frame is arranged at one end of an output shaft of the third motor, a camera is rotatably connected to the inner side wall of the mounting frame, a supporting rod is arranged on the upper surface of the frame, and a connecting rod is rotatably connected to the upper end of the supporting ...

Differential privacy non-negative matrix factorization method based on random sampling

A differential privacy non-negative matrix factorization method based on random sampling comprises the following steps: firstly, inputting an original score data matrix, namely score data V of a user original score data matrix collected by a system; secondly, initializing a factor matrix; carrying out iterative optimization on the factor matrix until convergence or precision meets the requirement; and finally, recommending according to the generated factor matrix, and calculating a root mean square error (RMSE). According to the method, random sampling operation is added in a noise introduction link, excessive error accumulation caused by multiple iterations is avoided, meanwhile, privacy and availability of applications are considered, the practical application value of the applications is improved, and privacy and availability proof of RDPNM is given; compared with a current optimal method IDPNMF which can only guarantee an element of a set-DP, the RDPNMF algorithm provided by the invention ...

Electronic document management method integrating forward index and reverse index

The invention provides an electronic document management method integrating forward and reverse indexes, which comprises the following steps of: selecting a database with a search engine as a forward index and a database with a search engine as a reverse index, and encapsulating a unified database API (Application Program Interface) to fuse and connect the two databases; when the electronic document is stored, the structured data of the electronic document is stored in the forward index database, the text data of the electronic document is stored in the reverse index database, and the data in the forward index database and the data in the reverse index database are associated with each other through the ID of the electronic document; and when the document is searched, searching is performed in the forward index database through the structural information of the document according to different requirements, or full-text efficient retrieval of the document is realized in the reverse index ...

Processing method of stainless steel precision strip steel with specific range of surface glossiness

The invention discloses a method for processing stainless steel precision strip steel with surface glossiness in a specific range, which comprises the following steps of: grinding working rollers of rolling mills with different roughness to enable the roughness of the ground rollers to reach a preset value; according to the preset surface glossiness of the stainless steel precision strip steel, a preset ground roller is selected for rolling; degreasing and cleaning the rolled precision strip steel; according to the machining method for the precise stainless steel strip with the surface glossiness within the specific range, production is conducted through the working procedures of roller grinding surface roughness control, rolling roller configuration, withdrawal and straightening, online glossiness inspection and the like, and the precision stainless steel strip with the surface glossiness within the specific range is obtained. The stainless steel precision strip steel with the surface ...

Building integrated photovoltaic system

The invention discloses a building integrated photovoltaic system. When the combined box is used, the legs on the periphery of the combined box body and the threaded groove hole sleeve are fixed, the whole combined box body can be formed, meanwhile, the combined box body is in an opening shape, and the cross beam support is fixedly connected to the position, located above the opening part, of the combined box body and used for being matched with the upper left plate and the right plate for use; wherein the left plate and the right plate are connected through the hovering mechanism ring to form a walking shape, so that the whole water spraying mechanism tilts the outer wall of the hovering mechanism. A first servo motor and a second servo motor on the outer wall of a hollow box are controlled to operate, when the first servo motor operates, a gear meshing disc can be rotated, when the gear meshing disc rotates, a vertical moving strip can be driven to move up and down, the vertical moving ...

Chemical resistance type gas sensor based on Cu-DBC conductive metal organic framework film and application of chemical resistance type gas sensor

The invention discloses a method for preparing a chemical resistance type gas sensor by using a Cu-DBC conductive metal organic framework film, which comprises the following specific experimental steps: firstly, carrying out hydrophilic modification on a quartz glass substrate, and then growing Cu-DBC films with different thicknesses on a solid-liquid interface by using a layer-by-layer self-assembly method, and finally, constructing a chemical resistance type gas sensor by using an interdigital electrode template and taking the Cu-DBC film as a sensitive material, and sensing hydrogen sulfide gas. The thin film grown by a layer-by-layer self-assembly method has very good conductivity, and when hydrogen sulfide gas is in contact with the surface of the Cu-DBC thin film, the resistance of the Cu-DBC thin film changes and is detected by an instrument, so that the sensitivity of the sensor is obtained. The gas sensor provided by the invention has very high responsivity to hydrogen sulfide ...