Abstract: The present application relates to the technical field of wastewater treatment and rapid pollutant detection, in particular to a chitosan-polyacrylamide composite porous hydrogel, preparation and use thereof, and a metal ion-adsorbing and detecting reagent and method. The chitosan-polyacrylamide composite porous hydrogel of the present application is prepared by in situ polymerization of a chitosan sol, an acrylamide, a crosslinking agent and a surfactant into a mixed solution comprising liquid droplets, followed by steps of curing, washing, and freeze-drying. The present application further provides a metal ion-detecting reagent, which is obtained by adsorbing a color developing agent into the chitosan-polyacrylamide composite porous hydrogel as described above, wherein the color developing agent is a dye that changes color when encountering metal ions. The chitosan-polyacrylamide composite porous hydrogel of the present application has balanced mechanical properties and porosity.

Abstract: The application discloses a method, apparatus and system for scanning an animal. The method includes obtaining a species of an animal to be scanned, identifying a type of an animal cabin where the animal to be scanned is located, and determining whether the species of the animal to be scanned matches the type of the animal cabin, determining and presenting a corresponding scanning protocol that matches the species of the animal to be scanned if the species of the animal to be scanned matches the type of the animal cabin, and perform a scan according to the corresponding scanning protocol, or according to a user-defined scanning protocol.

Abstract: A roller conveying rack includes two carrier plates with rectangular shapes, wherein the carrier plates are arranged in parallel and aligned, legs are disposed on both sides of a bottom of each carrier plate in a longitudinal direction of the carrier plate, the legs on different carrier plates are connected by sleeve shafts broken in a middle portion, rolling sleeves broken in a middle portion are arranged between upper portions of the carrier plates in the longitudinal direction of the carrier plates, movable shafts are disposed at the broken middle portion of the sleeve shafts and connecting shafts are disposed at the broken middle portion of the rolling sleeves, insertion holes are provided on each sleeve shaft between the legs and threaded holes are provided on each movable shaft between the legs, and each insertion hole is connected to a corresponding threaded hole by a bolt.

Abstract: An embodiment of this application provides a device and method for assembling a battery cell. The device includes: a conveyance mechanism, configured to fix an electrode assembly and convey the electrode assembly to a coating station; a coating mechanism, configured to coat at least a part of an outer surface of the electrode assembly with an insulation layer at the coating station, where the conveyance mechanism is further configured to: convey the electrode assembly coated with the insulation layer to an encasing station; and an encasing mechanism, configured to fit, at the encasing station, a housing peripherally onto the electrode assembly coated with the insulation layer. The device and method for assembling a battery cell disclosed herein can improve the assembling efficiency of battery cells.

Abstract: Disclosed herein is a novel monoclonal antibody exhibiting binding affinity to Siglec-3 receptor. According to the embodiment, the monoclonal antibody is capable of reversing HBV-induced immunosuppression. Accordingly, also disclosed herein are the uses thereof in the treatment and/or prophylaxis of hepatitis B virus (HBV) infection.

Abstract: Disclosed are methods for conversion of ?-hydroxy carbonyl species and preparation of amino alcohol precursor using bifunctional catalysts derived from layer double hydroxides. By the bifunctional catalyst, the abundant basic sites on HTO allow retro-aldol condensation to outpace direct hydrogenation, thus achieving an exceptional selectivity towards a desired product produced through retro-aldol condensation and then hydrogenation. Accordingly, this method exhibits particular utility in the renewable production of N-acetylethanolamine from biomass-derived N-acetyl glucosamine (GlcNAc) without using homogeneous base as a co-catalyst.

Abstract: A catalyst for methanation reaction and a method for preparing methane are provided. The catalyst for methanation reaction includes a core, a shell encapsulating the core, and an active metal. The core includes cerium dioxide (CeO2), the shell includes zirconium dioxide (ZrO2), and the active metal is in particle form and is disposed on an outer surface of the shell layer.

Abstract: This application relates to a piece of cell processing equipment, a cell processing method, and a battery production line. The cell processing equipment includes: a first support assembly, configured to fix a cell body, where the first support assembly is able to rotate around a first rotation axis; a second support assembly, configured to fix the cell body, where the second support assembly is able to rotate around a second rotation axis, and the first rotation axis is disposed parallel to the second rotation axis; and a third support assembly, configured to fix a tab and an end cap. The third support assembly includes a support seat and a shaping piece. An electrode post positioning groove is formed on the support seat. The shaping piece is disposed movably relative to the support seat.

Abstract: A method for selectively chemically reducing CO2 to form CO includes providing a catalyst, and contacting H2 and CO2 with the catalyst to chemically reduce CO2 to form CO. The catalyst includes a metal oxide having a chemical formula of FexCoyMn(1-x-y)Oz, in which 0.7?x?0.95, 0.01?y?0.25, and z is an oxidation coordination number.

Abstract: An electrode core encasing apparatus includes a main power mechanism, a housing fixing mechanism, an encasing mechanism, and an electrode core fixing mechanism. The housing fixing mechanism is disposed on one side of the encasing mechanism, which is located between the housing fixing mechanism and the electrode core fixing mechanism. The encasing mechanism includes an encasing mechanism body and an XY floating slide block. Two ends of the XY floating slide block are connected to the main power mechanism and the encasing mechanism body, respectively. The XY floating slide block is configured to drive the encasing mechanism body to slide freely relative to the main power mechanism, so as to adjust a relative position between the housing and the electrode core. The main power mechanism is configured to drive the housing fixing mechanism and the encasing mechanism to move to sleeve the electrode core into the housing.

Abstract: A method for selectively chemically reducing CO2 to form CO includes providing a catalyst, and contacting H2 and CO2 with the catalyst to chemically reduce CO2 to form CO. The catalyst includes a metal oxide having a chemical formula of FexCoyMn(1?x?y)Oz, in which 0.7?x?0.95, 0.01?y?0.25, and z is an oxidation coordination number.

Abstract: An electrode core encasing apparatus includes a main power mechanism, a housing fixing mechanism, an encasing mechanism, and an electrode core fixing mechanism. The housing fixing mechanism is disposed on one side of the encasing mechanism, which is located between the housing fixing mechanism and the electrode core fixing mechanism. The encasing mechanism includes an encasing mechanism body and an XY floating slide block. Two ends of the XY floating slide block are connected to the main power mechanism and the encasing mechanism body, respectively. The XY floating slide block is configured to drive the encasing mechanism body to slide freely relative to the main power mechanism, so as to adjust a relative position between the housing and the electrode core. The main power mechanism is configured to drive the housing fixing mechanism and the encasing mechanism to move to sleeve the electrode core into the housing.

Abstract: A method for selectively chemically reducing CO2 to form CO includes providing a catalyst, and contacting H2 and CO2 with the catalyst to chemically reduce CO2 to form CO. The catalyst includes a metal oxide having a chemical formula of FexCoyMn(1-x-y)Oz, in which 0.7?x?0.95, 0.01?y?0.25, and z is an oxidation coordination number.

Abstract: The application discloses a method, apparatus and system for scanning an animal. The method includes obtaining a species of an animal to be scanned, identifying a type of an animal cabin where the animal to be scanned is located, and determining whether the species of the animal to be scanned matches the type of the animal cabin, determining and presenting a corresponding scanning protocol that matches the species of the animal to be scanned if the species of the animal to be scanned matches the type of the animal cabin, and perform a scan according to the corresponding scanning protocol, or according to a user-defined scanning protocol.

Abstract: Disclosed are a CRISPR-Cas14a responsive photoelectrochemical sensing detection method and a kit for detecting T2 toxin, relating to the technical field of small molecule toxin detection; the detection method includes: (1) preparation of a magnetic probe; (2) electrode modification; (3) identification of magnetic beads; (4) SDA isothermal amplification; (5) cutting; (6) photoelectrochemical detection; and (7) standard curve plotting. According to the present application, using SDA to enlarge and amplify the signal isothermally, target is detected by Cas14a trans cleavage property and photoelectric signal with good stability, high specificity of reaction, high sensitivity.

Abstract: A dual sensor imaging system and a privacy protection imaging method thereof are provided. The system is configured to control at least one color sensor and at least one IR sensor to respectively capture multiple color images and multiple IR images by adopting multiple exposure conditions adapted for an imaging scene, adaptively select a combination of the color image and the IR image that can reveal details of the imaging scene, detect a feature area with features of a target of interest in the color image, and fuse the color image and the IR image to generate a fusion image with the details of the imaging scene, and crop an image of the feature area of the fusion image to be replaced with an image not belonging to the IR image, so as to generate a scene image.

Abstract: A method for selectively chemically reducing CO2 to form CO includes providing a catalyst, and contacting H2 and CO2 with the catalyst to chemically reduce CO2 to form CO. The catalyst includes a metal oxide having a chemical formula of FexCoyMn(1-x-y)Oz, in which 0.7?x?0.95, 0.01?y?0.25, and z is an oxidation coordination number.

Abstract: A catalyst for methanation reaction and a method for preparing methane are provided. The catalyst for methanation reaction includes a core, a shell encapsulating the core, and an active metal. The core includes cerium dioxide (CeO2), the shell includes zirconium dioxide (ZrO2), and the active metal is in particle form and is disposed on an outer surface of the shell layer.

Abstract: The present application relates to the technical field of wastewater treatment and rapid pollutant detection, in particular to a chitosan-polyacrylamide composite porous hydrogel, preparation and use thereof, and a metal ion-adsorbing and detecting reagent and method. The chitosan-polyacrylamide composite porous hydrogel of the present application is prepared by in situ polymerization of a chitosan sol, an acrylamide, a crosslinking agent and a surfactant into a mixed solution comprising liquid droplets, followed by steps of curing, washing, and freeze-drying. The present application further provides a metal ion-detecting reagent, which is obtained by adsorbing a color developing agent into the chitosan-polyacrylamide composite porous hydrogel as described above, wherein the color developing agent is a dye that changes color when encountering metal ions. The chitosan-polyacrylamide composite porous hydrogel of the present application has balanced mechanical properties and porosity.

Abstract: An electronic-cigarette cartridge and an electronic cigarette are provided. The electronic-cigarette cartridge includes: a first contact point and a second contact point which are connected to a base part of an electronic cigarette, wherein the first contact point is configured to connect a control signal, and the second contact point is configured to input a reference voltage signal; an authentication module, wherein one end of the authentication module is connected to the first contact point, another end is connected to the second contact point, and is configured to interact with the base part of the electronic cigarette to conduct anti-counterfeiting authentication; and a heating module which is connected in parallel with the authentication module and is configured to performing heating after the anti-counterfeiting authentication is passed; wherein a working frequency of the authentication module is at least 10 times that of the heating module.