Abstract: An aptamer of nattokinase and method for screening the aptamer are provided, which relate to technical fields of biotechnology. A set of nattokinase nucleic acid aptamers screened by capillary electrophoresis separation technology is: SEQ ID NO:1˜SEQ ID NO:17. The dissociation constants of the seven aptamers were detected by surface plasmon resonance technology, and the affinity of the seven aptamers was strong, with affinities between 8.7-87 nM. The nucleic acid aptamer of the present disclosure has precise specificity, high affinity, and is convenient for chemical modification, and can be used as an effective molecular recognition tool for the high-sensitive analysis of proteins. it. The recognition technology based on nucleic acid aptamers provides a basis for the development of NK determination and efficient separation and purification.

Abstract: A vehicle emblem raising and retracting device includes a driving mechanism, a clutch mechanism and a linkage rod mechanism. Driving mechanism is assembled in vehicle body of vehicle. Clutch mechanism is assembled below a three-dimensional vehicle emblem and is selectively connected to driving mechanism; when clutch mechanism is engaged with driving mechanism, driving mechanism drives clutch mechanism to cause three-dimensional vehicle emblem to move up and down relative to vehicle body; when clutch mechanism is disengaged from driving mechanism, clutch mechanism and three-dimensional vehicle emblem descend to inside of vehicle body under effect of their own gravity.

Abstract: Disclosed are emulsion gel with both a freshness indication and a low migration rate, and a preparation method therefor. Lipase and organic acid are used and subjected to hydrophobic modification of anthocyanins to obtain acylated anthocyanins, the acylated anthocyanins and oil-phase gel are then dissolved in vegetable oil to form an oil phase, while a sodium alginate aqueous solution is used as a water phase, the oil phase and the water phase are mixed and subjected to high-speed shearing, and calcium carbonate and glucono-?-lactone are finally added for high-speed shearing to form emulsion gel. The emulsion gel prepared in the present disclosure has both a freshness indication and a low migration rate, and the preparation method of the present disclosure is simple, green, pollution-free and low energy consumption.

Abstract: The disclosure relates to the field of medical image analysis, in particular to an image reconstruction and analysis method, system and device for saline contrast electrical impedance pulmonary perfusion and cardiac imaging. A saline contrast lung perfusion image reconstruction method, a pulsatile perfusion image reconstruction method, lung perfusion and regional V/Q noninvasive imaging method are included. The disclosure has very good application value in accurate reconstruction of medical images.

Abstract: The present invention provides an electric power material distribution and allocation method based on an optimized branch and bound method, including: sorting the distribution of each batch of electric power materials to obtain a material set R; screening available vehicle data to obtain a vehicle deadweight set W and a vehicle unique identification set C; determining whether available vehicles meet requirements; and using an optimized queued branch and bound method to obtain an optimal distribution and allocation scheme. According to the present invention, scientific scheme support is provided for the distribution and allocation of the electric power materials, the scientificity of the distribution of power grid materials is improved, the influence of human factors is reduced, the utilization rate of distribution vehicles is increased, the distribution cost of the materials is reduced, and the economic benefit is improved.

Abstract: The present invention relates to a subway vehicle electronic record system based on blockchain technology, which mainly includes business view module, record information maintenance module, statistical analysis module, record information management module, system management module, and blockchain foundation platform. The invention comprehensively makes use of blockchain, database and other technologies to normalize heterogeneous data of subway vehicle record.

Abstract: Disclosed are isolated monoclonal antibodies, comprising a CD152-binding domain, wherein the antibodies bind specifically to human CD152. Methods of making and using the antibodies to treat diseases including cancers and autoimmune diseases are also provided.

Abstract: A device includes a substrate, a semiconductor layer and a ferroelectric layer. The semiconductor layer is over the substrate. The semiconductor layer is a single crystal silicon layer or a single crystal germanium layer. The ferroelectric layer is over the semiconductor layer. The ferroelectric layer is in physical contact with the semiconductor layer and has an orthorhombic phase.

Abstract: A method and system for myocardial information determination may be provided. Medical images of the heart of a target subject may be obtained. The medical images may be collected by performing a medical scan on the target subject when the target subject is injected with a first tracer. A target model that has been trained using training samples may be obtained. Each training sample includes label information collected using a second tracer. Blood flow information and/or cardiac function information of the heart of the target subject may be determined based on the medical images and the target model.

Abstract: Provided is a Coxsackievirus A6 (CVA6) strain CVA6-KM-J33 and use thereof, and belongs to the technical field of biomedicine. The present invention provides a CVA6 strain CVA6-KM-J33, which belongs to a CVA6 virus. In the present invention, the strain CVA6-KM-J33 is susceptible to KMB17 cells and can achieve a relatively high titer. The strain has strong virulence, high pathogenicity and lethality to suckling mice, and desirable immunogenicity, and is a highly effective virus strain for CVA6 vaccine development. This strain can be used for immunogenicity evaluation or protective evaluation of CVA6 vaccine to improve the accuracy and reproducibility of vaccine immunogenicity evaluation. This strain can also be used to prepare animal models of Coxsackievirus (CV) infection, and exhibits desirable application prospects.

Abstract: Systems and methods for video summary generation are disclosed. A chat and video conference provider generates a text summary for a meeting video and an audio summary based on the text summary. The chat and video conference provider determines a first set of correspondences between a first set of video portions from the meeting video and portions of the text summary based on a transcript of the meeting video. The chat and video conference provider determines a second set of correspondences between a second set of video portions from the meeting video and the portions of the text summary based on image data of the meeting video. The chat and video conference provider selects a plurality of video frames from the first set of the correspondences and the second set of correspondences to generate a video summary of the meeting video based on the audio summary.

Abstract: An escalator module and an escalator are provided. The escalator module includes a multifunctional connecting bracket, and a guide wheel assembly including a guide wheel support plate and a plurality of guide wheels. The plurality of guide wheels are connected to the guide wheel support plate, and the guide wheel support plate is connected to the multifunctional connecting bracket, and the multifunctional connecting bracket does not exceed the guide wheel assembly in a transverse direction, so that the escalator module at least includes, at the maximum dimension in the transverse direction, the guide wheel assembly.

Abstract: Embodiments of the present disclosure relate to lipid-PEGylated solid support and phosphoramidites derivatives, methods for preparing the same, and their uses in the delivery of oligonucleotide drugs to the cellular targets.

Abstract: Provided is a vehicle navigation method based on an improved A-star (A*) algorithm, relating to the technical field of path panning. The method includes: converting a regional map for path planning into a grid map; planning a target travel path of an automated guided vehicle from a starting point to a target point on the grid map by using an improved A* algorithm, where the improved A* algorithm is an A* algorithm incorporating turning costs into a cost function; and navigating the automated guided vehicle along the target travel path. The method reduces the turning costs and improves navigation efficiency.

Abstract: Examples of the present disclosure provide a device management method applied to a first device in a self-organizing network and a network device.

Abstract: Provided are a map data processing method and apparatus, and a storage medium, which relate to the field of data processing technology and, in particular, to artificial intelligence technology, for example, computer vision, map technology, and intelligent transportation. A specific implementation solution includes: processing landform coverage data according to a type of surface species coverage and a data processing rule associated with the type of surface species coverage to obtain a surface species coverage effect map; and generating a landform map according to the surface species coverage effect map and a reference map.

Abstract: A display control method, for a terminal externally provided with a display assembly, includes: obtaining a target image including a current display frame of the terminal; determining a display region in the target image, in which the display region has a mapping relationship with a display unit included in the display assembly; determining color display data of the display region; and sending the color display data to the display assembly, to make the display unit corresponding to the display region display a color corresponding to the color display data.

Abstract: Systems, methods, and devices for generating tunable low frequency signals, such as microwave and radiofrequency signals are disclosed. A first waveguide in optical communication with a first ring resonator can be configured to receive a light input and generate frequencies via optical parametric oscillation. A second waveguide with second ring resonator can receive the frequencies and optically synchronize the frequencies via optical frequency division to generate a low frequency signal. One or more heating elements can be connected to each ring resonator to tune the resonators and reduce noise associated with the low frequency signal.

Abstract: A data transmission method and apparatus, and a communication device and a readable storage medium are provided, and belong to the field of communication technology. The data transmission method includes: a first functional entity obtains an IP flow, and maps the IP flow to a corresponding AS bearer based on Quality of Service (Qos) characteristics of the IP flow, to transmit the IP flow to a second functional entity. The first functional entity is a user plane functional entity in layer 3 of an Access Stratum (AS) of the sending end; the second functional entity is a functional entity in layer 2 of the AS; the AS bearer is a data packet bearer characterized by QoS.