Abstract: In a method for counting embryos developing in a uterus of Caenorhabditis elegans, a complete set of experimental procedures are designed to count embryos in the uterus of Caenorhabditis elegans by using Caenorhabditis elegans as a model organism. The method is applicable to Caenorhabditis elegans exposed from an L1 stage to a final stage of pregnancy, and can provide an easy-to-observe, fast, simple, accurate and reliable experimental method to apply Caenorhabditis elegans to research of reproductive ability, detection results of which are highly accurate and reliable, and the experimental method is suitable for promotion.

Abstract: An image distortion correction method and an apparatus, where the method includes: performing optical distortion correction on a collected source image to obtain a first corrected image, where the first corrected image includes a background region and a portrait in which stretching deformation occurs, and where the portrait in which stretching deformation occurs includes at least a first human body region in which stretching deformation occurs and a second human body region in which stretching deformation occurs; and performing algorithm constraint correction on the first human body region, the second human body region, and the background region to obtain a second corrected image, where constraint terms used for the algorithm constraint correction respectively constrain the first human body region, the second human body region, and the background region.

Abstract: This application relates to a negative electrode active material. The negative electrode active material includes a core structure and a shell structure disposed around surface of the core structure, the core structure and the shell structure both have pores, and an average pore size of pores in the shell structure is greater than an average pore size of pores in the core structure. The negative electrode active material of this application can provide excellent kinetic performance under the condition of high compacted density. When used in a battery, this negative electrode active material can increase the energy density of the battery and achieve the objective of fast charging.

Abstract: Systems and methods are disclosed for air flow optimization. In certain embodiments, the technology is a system comprising sensors, injectors, actuators, and a system processor. In order to optimize the air flow, the system processor directs the injectors to expel aerosol particles into an environment, such that the aerosol particles can be measured by the one or more sensors. Flow intensity map generation is then used to map the aerosol particles and air flow is changed to optimize aerosol particle concentration using the actuators.

Abstract: A sulfinate glycosyl donor of formula I and a method for preparing same as well as use thereof in preparing a glycoside compound including a thioglycoside compound and a carbon glycoside compound are provided. The sulfinate glycosyl donor has a special sulfinate structure. When the sulfinate glycosyl donor is used as a raw material to prepare the glycoside compound, an additional initiator does not need to be added, such that the production cost is saved, the generation of byproducts is reduced, and the glycoside compound with a purity greater than 98% is obtained. The sulfinate glycosyl donor can be used in the preparation of the glycoside compound such as the thioglycoside compound and the carbon glycoside compound.

Abstract: A method for the glycosylation modification of proteins and/or polypeptides uses glycosyl sulfinate as a raw material. The method for glycosylation and modification is applicable not only to proteins and/or peptides containing disulfide bonds, but also to proteins and/or peptides containing sulfhydryl groups. The method is even applicable to proteins and/or peptides containing both disulfide bonds and sulfhydryl groups.

Abstract: In a method for preparing an aryl carbon glycoside compound including a gliflozin drug, a sulfinate glycosyl donor represented by formula W is used as a raw material to prepare the aryl carbon glycoside compound including the gliflozin drug. The method does not need to use an additional initiator.

Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z?K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.

Abstract: Provided are a negative active material, a method for preparing same, a secondary battery containing same, and an electrical device. The negative active material includes a natural graphite substrate of a porous structure and a functional material distributed in pores of the natural graphite substrate, and the functional material includes amorphous carbon and a titanium-containing compound. The negative active material provided in this application exhibits excellent kinetic performance, and the secondary battery provided herein exhibits excellent fast-charging performance and cycle performance.

Abstract: A method for measuring flicker fusion threshold. Set a measurement scheme, including setting N 8-shaped digital frames in a background light area that flickers within a set frequency. Set ten groups of different frequency combinations being applied to the N 8-shaped digital frames. Assign each frequency in each group of the frequency combinations with a stroke of the 8-shaped digital frame. Randomly select, for each of the N 8-shaped digital frames, one from the ten groups of the frequency combinations. Determine the value of each frequency in each group of frequency combinations in the N groups of frequency combinations. Recognize, by the subject, the flickering digits on the N 8-shaped digital frames in the background light area within the set frequency range. Determine the range of the flicker fusion threshold or the final flicker fusion threshold of the subject according to the result that can be seen by the subject.

Abstract: Provided are a modified graphite and a preparation method thereof, a carbon-coated negative active material and a preparation method thereof, a negative electrode plate, a secondary battery, a battery module, a battery pack, and an electrical device. The preparation method of a modified graphite includes the following steps: (S10) providing a graphite substrate; and (S20) heat-treating the graphite substrate in a micro-oxidizing atmosphere to obtain the modified graphite, where the micro-oxidizing atmosphere includes a reactive gas, and the reactive gas is one or more selected from CO2, O2, and O3. The preparation method of a carbon-coated negative active material includes the following steps: (S100) providing a negative active material substrate; and (S200) heat-treating the negative active material substrate and a carbonaceous precursor in a micro-oxidizing atmosphere to obtain the carbon-coated negative active material, where the micro-oxidizing atmosphere includes a reactive gas.

Abstract: This application provides a negative electrode active material and a preparation method thereof. The negative electrode active material may be self-embedded graphite composed of graphite A and graphite B, where the surface of the graphite A may have a tenon structure, the surface of the graphite B may have a mortise structure, the tenon structure of the graphite A and the mortise structure of the graphite B may be mutually embedded, and a hydrogen bond may be formed between the tenon structure of the graphite A and the mortise structure of the graphite B.

Abstract: A virtual scene interaction method is disclosed, including displaying a viewing page of a target cloud video, a play screen of a virtual scene being displayed in the target cloud video, the viewing page comprising N interaction triggering marks, an ith interaction triggering mark of the N interaction triggering marks being used for linking to an interaction progress point in the virtual scene, both i and N being positive integers, and i?N; and displaying, when the ith interaction triggering mark is selected, a control page for the virtual scene starting from the interaction progress point linked by the ith interaction triggering mark.

Abstract: An interaction scene starting method includes displaying a play interface of a target video, the target video corresponding to a recorded play of a game; identifying a first interaction progress point of a virtual interaction scene of the game in the target video; obtaining scene interaction data corresponding to the first interaction progress point from a scene interaction server; and displaying a scene interaction image according to the scene interaction data and enabling playing the game from the first interaction progress point.

Abstract: The invention discloses a terminal and an electronic device having the same. The terminal includes a connecting part, a mounting part, and a fixing part along an insertion direction, wherein the connecting part is adapted to be connected to a jump wire of an electronic component, the mounting part has an outer profile matching with at least a portion of an inner profile of an insertion hole in a base, for restricting displacement of the terminal after being inserted into the insertion hole, and the fixing part is adapted to be threadedly connected with the a fixing member so as to connect the fixing part to a circuit board.

Abstract: The present invention discloses a preparation method for a surface molding film of a PVC-based stone plastic composite board, including: surface activation treatment of the PVC-based stone plastic composite board: preparation of an activated putty, coarse roughening of a substrate surface, application and solidification of the activated putty, and fine roughening of the substrate surface; preparation of a PMMA slurry; and surface film forming of the PVC-based stone plastic composite board. The PVC-based stone plastic composite board coated with a PMMA film is obtained by cold pressing and shaping in a mold, tightening up a clamp, solidifying at low temperature, treating at high temperature, cooling and demolding.

Abstract: Systems and methods are disclosed for air flow optimization. In certain embodiments, the technology is a system comprising sensors, injectors, actuators, and a system processor. In order to optimize the air flow, the system processor directs the injectors to expel aerosol particles into an environment, such that the aerosol particles can be measured by the one or more sensors. Flow intensity map generation is then used to map the aerosol particles and air flow is changed to optimize aerosol particle concentration using the actuators.

Abstract: The invention discloses a terminal and an electronic device having the same. The terminal includes a connecting part, a mounting part, and a fixing part along an insertion direction, wherein the connecting part is adapted to be connected to a jump wire of an electronic component, the mounting part has an outer profile matching with at least a portion of an inner profile of an insertion hole in a base, for restricting displacement of the terminal after being inserted into the insertion hole, and the fixing part is adapted to be threadedly connected with the a fixing member so as to connect the fixing part to a circuit board.

Abstract: A method for measuring flicker fusion threshold. Set a measurement scheme, including setting N 8-shaped digital frames in a background light area that flickers within a set frequency. Set ten groups of different frequency combinations being applied to the N 8-shaped digital frames. Assign each frequency in each group of the frequency combinations with a stroke of the 8-shaped digital frame. Randomly select, for each of the N 8-shaped digital frames, one from the ten groups of the frequency combinations. Determine the value of each frequency in each group of frequency combinations in the N groups of frequency combinations. Recognize, by the subject, the flickering digits on the N 8-shaped digital frames in the background light area within the set frequency range. Determine the range of the flicker fusion threshold or the final flicker fusion threshold of the subject according to the result that can be seen by the subject.

Abstract: A virtual-reality-based control method and apparatus are disclosed. In the method, a moving instruction initiated by a first object located in a virtual reality scene is detected and a moving request is transmitted to a server based on the moving instruction. A movable area is received from the server in response to the moving request, wherein the movable area does not overlap with a safe area of a second object, the second object being an object other than the first object in the virtual reality scene. The first object is prompted to move within the movable area.