Abstract: A composite silicon-based negative electrode material, a preparation method therefor, a negative electrode sheet comprising same, and a lithium-ion secondary battery are provided. The composite silicon-based negative electrode material comprises a silicon-based material core layer and a metal material shell layer, wherein the metal material shell layer coats the silicon-based material core layer, and the silicon-based material core layer comprises a permeation area formed by the permeation of the metal material shell layer into the silicon-based material core layer. By means of the composite silicon-based negative electrode material and the preparation method therefor of the present application, the conductivity of the negative electrode material is improved, the expansion rate of the core layer formed by the silicon-based material is limited, and the consumption of lithium ions caused by a reaction between an electrolyte and the surface of the silicon-based material is effectively reduced.

Abstract: A plug-in contact assembly suitable for automatic transfer switches includes a contact holder, two moving contact pieces disposed apart from each other, a moving contact piece bracket and a biasing spring; the contact holder holds the moving contact piece bracket and the biasing spring therein; and the two moving contact pieces disposed apart from each other are held in place relative to the contact holder under the joint action of the biasing spring and the moving contact piece bracket; characterized in that, two ends of each moving contact piece are each provided with a moving contact thereon by means of welding.

Abstract: A message transmitting method and apparatus provide for a subtle reminder function. Head portraits of at least two user accounts are displayed in a first chat interface. The at least two user accounts include a first user account and a second user account. An interaction message is generated in response to an interaction with the head portrait of the second user account. The interaction message is transmitted to the second user account. The interaction message is used to trigger the display of an animation of the head portrait of the second user account in a second chat interface. This provides for a new interaction between user accounts, and can provide a subtle reminder function.

Abstract: Stacking apparatus includes: a base, a first drive element, and a limiting mechanism, the base is provided with a feeding side and a blanking side; an output end of the first drive element is in connection with the base, and the first drive element is configured for driving the rotation of the base so as to switch between the feeding side and the blanking side; the limiting mechanism is provided on the base, both the feeding side and the blanking side are provided with at least one limiting mechanism, a placement region is formed in the limiting mechanism, the limiting mechanism includes limiting plates arranged to be opposite to each other, the limiting plates are arranged to extend along a vertical direction perpendicular to the base, and at least one of the limiting plates moves relatively or oppositely, so as to adjust the length of the placement region.

Abstract: An efficient and scarless gene editing system for Salmonella and the use thereof are provided. ?Red recombinase is used to promote a double crossover of a DNA template with a genomic target site, the CRISPR/Cas9 system is used for screening, and one-step homologous recombination is used to rapidly construct a targeting plasmid, which can realize insertion, substitution or knock-out of genes. Genomic DNA is completely substituted according to a design of homologous template, and without other fragment residues. Genome editing can be completed efficiently within 3-4 days, thereby reducing the experimental workload and shortening the experimental cycle.

Abstract: Provided is a fried food preparation system, which relates to the technical field of food equipment. The fried food preparation system includes a food dispenser assembly, a manipulator arm assembly, a deep fryer assembly and a frying basket. The deep fryer assembly and the food dispenser assembly are respectively arranged in parallel on both sides of the manipulator arm assembly, wherein the manipulator arm assembly is connected with the frying basket and makes the frying basket move in a plane formed by a first direction and a second direction.

Abstract: Disclosed are a vehicle positioning method based on environment matching, a vehicle positioning device based on environment matching, a vehicle and a storage medium. The method includes: obtaining current environment data and a current road image of a location of a vehicle to be located; searching for an environmental impact road image set matching with the current environment data; matching the current road image with an environmental impact road image in the environmental impact road image set respectively to obtain a target environmental impact road image matching with the current road image; and determining current location information of the vehicle to be located based on the target environmental impact road image.

Abstract: The application relates to a spring mechanism for a dual power transfer switch and a dual power transfer switch. The spring mechanism includes: a base mounted on a housing of the dual power transfer switch; and a spring mounted on the base. The spring includes a first leg configured to contact and exert a pressure on an indicator of the dual power transfer switch, so as to generate a frictional force between the first leg and the indicator and reduce a rebound of the indicator upon the indicator moving between a first indicating position and an intermediate indicating position, the first indicating position indicates that the dual power transfer switch is in a first power-on position, and the intermediate indicating position indicates that the dual power transfer switch is in a dual-off position.

Abstract: The present application relates to the field of biomedicine, and particularly provides an anti-LAG-3 monoclonal antibody and an antigen binding fragment thereof, and use thereof, wherein the anti-LAG-3 monoclonal antibody and the antigen binding fragment thereof comprise a heavy chain variable region and a light chain variable region, and are selected from any one of A-1, A-2: A-3, and A-4.

Abstract: A data processing method includes, in response to an interaction message being displayed on an interaction interface, displaying a virtual object in an interaction area in which the interaction message is located, and displaying a resource object at a target location on the interaction interface. The virtual object and the resource object are associated with the interaction message, and the resource object and the virtual object are configured to interact with each other. The method further includes displaying, on the interaction interface, interactive movement involving the virtual object and the resource object. The interactive movement includes moving the virtual object from a location of the interaction area, and/or moving the resource object from the target location.

Abstract: This application discloses a call display method and apparatus, a device, and a storage medium, which fall within the field of instant messaging. The method includes displaying an outgoing call-interface, the outgoing call-interface being prior to a call connection between the first terminal and a second terminal; and displaying recent information in the outgoing call-interface, the recent information being social network information recently posted by a second user account corresponding to the second terminal.

Abstract: A weld quality inspection method, apparatus and system and an electronic device are disclosed. The weld quality inspection method provided by the embodiments of the disclosure includes: acquiring point cloud data of a target weldment, and converting the point cloud data into a height map; determining a weld region for characterizing a target weld from the height map; analyzing the weld region to obtain a feature parameter of the target weld; and obtaining a quality inspection result of the target weld according to the feature parameter, where the target weldment includes a base material, a welding part and the target weld formed by welding the welding part to the base material.

Abstract: A fully automatic mask production line is disclosed, including a mask material loading device, a folding device, a nose wire loading device, a mask body forming device, a mask overturning and conveying device, an ear loop welding device and a collecting device. The mask material loading device is adjacent to the folding device, the nose wire loading device is adjacent to the folding device, a feeding end of the mask body forming device is arranged opposite to the nose wire loading device and the folding device respectively, the mask overturning and conveying device is adjacent to the mask body forming device, and the ear loop welding device and the collecting device are respectively arranged on a conveying path and a conveying tail end of the mask overturning and conveying device.

Abstract: Preparation method of glycoside compounds is involved in the invention, with the advantages of short synthesis steps, high stereoselectivity and yield, simple production operation, low equipment requirements, environmental protection and suitability for industrial mass production.

Abstract: An indicating device for a dual power automatic transfer switch, which includes a first driving part connected to a first moving contact of a first power supply and a second driving part connected to a second moving contact of a second power supply; the indicating device includes a mechanical indicating device, an electrical indicating device and an indicating part acting on the mechanical indicating device and the electrical indicating device; the first and the second driving part respectively drive the indicating part to move; the electric indicating device at least includes a first and second switching device; the first switching device at least includes a first contact of the first switching device and a second contact of the first switching device which are connected in parallel; the second switching device at least includes a first contact and a second contact of the second switching device which are connected in parallel.

Abstract: A laser welding control method, apparatus and system, and an electronic device are disclosed, the method includes: receiving a current position of a welding head fed back by an encoder; determining whether the current position reaches a set position; and in response to the welding head reaching the set position, sending a laser control signal to a laser device to control the laser device to output laser at the set position.

Abstract: A plug-in contact assembly suitable for automatic transfer switches includes a contact holder, two moving contact pieces disposed apart from each other, a moving contact piece bracket and a biasing spring; the contact holder holds the moving contact piece bracket and the biasing spring therein; and the two moving contact pieces disposed apart from each other are held in place relative to the contact holder under the joint action of the biasing spring and the moving contact piece bracket; characterized in that, two ends of each moving contact piece are each provided with a moving contact thereon by means of welding.

Abstract: The application relates to a spring mechanism for a dual power transfer switch and a dual power transfer switch. The spring mechanism includes: a base mounted on a housing of the dual power transfer switch; and a spring mounted on the base. The spring includes a first leg configured to contact and exert a pressure on an indicator of the dual power transfer switch, so as to generate a frictional force between the first leg and the indicator and reduce a rebound of the indicator upon the indicator moving between a first indicating position and an intermediate indicating position, the first indicating position indicates that the dual power transfer switch is in a first power-on position, and the intermediate indicating position indicates that the dual power transfer switch is in a dual-off position.

Abstract: The present invention discloses a glycoside compound represented by Formula III, and a preparation method, a composition, use and an intermediate thereof. The glycoside compound provided in the present invention has simple preparation method, can significantly increase the expression of VEGF-A mRNA, and is effective in promoting the angiogenesis. This provides a reliable guarantee for the development of drugs with pro-angiogenic activity for treating cerebral infarction cerebral stroke, myocardial infarction, and ischemic microcirculatory disturbance of lower limbs.

Abstract: This application is directed to a geographic information display method. While a first mobile device is executing an instant messaging application, it obtains its own geographic location information, a second mobile device's geographic location information, and a first timestamp at which the geographic location information is recorded. The first mobile device then displays an interactive map associated with the first timestamp on a user interface. The displayed map includes two marks that represent the locations of the first and second mobile devices, respectively, and instant messages exchanged between these two mobile devices are displayed on the map adjacent to the two marks. As the first mobile device obtains updated geographic location information in association with a second timestamp, it updates the location of the second mobile device while the mark corresponding to the first mobile device remains at the same location on the user interface.