Abstract: A molding device and a molding method for an optical fiber preform are provided. The molding device includes a rotating mechanism, an extrusion mechanism, and a cylinder mold that is of a cylindrical structure with two ends each having an opening. After a hollow cladding sleeve is obtained by rotating the cylinder mold through the rotating mechanism, a molten core glass is then reversely extruded into the cladding sleeve in the cylinder mold from bottom to top by the extrusion mechanism to prepare the optical fiber preform.

Abstract: The present invention relates to a nanoparticulate composition comprising nanoparticles formed from an amphipathic block copolymer comprising a hydrophilic block and a hydrophobic block, where the nanoparticles are provided in the form of micelles, cylindrical worm structures or vesicles and the size of the nanoparticles is from 25 to 500 nm, wherein: the composition is substantially free of heavy metals and compounds comprising sulfur. Also disclosed herein is a method of forming said nanoparticulate composition by polymerization induced self-assembly (PISA) via non-transition-metal catalysed controlled radical polymerization (NTMC-CRP).

Abstract: According to an aspect of the disclosure, a method of controlling bow of a substrate is provided. In the method, a substrate is provided on which a dielectric layer is formed. The substrate has a bow with respect to a reference plane. The bow of the substrate is adjusted by performing an annealing process on the substrate. The annealing process includes one of a first process condition and a second process condition. The first process condition induces a tensile stress on the substrate to cause the substrate to bow upward with respect to the reference plane. The second process condition induces a compressive stress on the substrate to cause the substrate to bow downward with respect to the reference plane.

Abstract: The disclosure relates to a fifth generation (5G) or sixth generation (6G) communication system for supporting a higher data transmission rate. Disclosed is a method performed by a first device in a communication system, including performing measurement of a first reference signal based on configuration information for the first reference signal, when the first device meets a predetermined condition, and reporting a result of the measurement, wherein the predetermined condition is based on at least one of location information, information related to downlink reference signals, and information related to at least one base station.

Abstract: A laser glass doped with high concentration of mid-infrared fluoroindate and a preparation method thereof are provided in the present application, belonging to the technical field of luminescent glass. The laser glass doped with high concentration of mid-infrared fluoroindate includes the raw materials in parts by mole percentage: 27-38 parts of InF3, 13 parts of ZnF2, 10 parts of GdF3, 19 parts of BaF2, 5 parts of CaF2, 10 parts of SrF2, 5-15 parts of Al(PO3)3 and 1-11 parts of ErF3.

Abstract: Provided is a multimedia data stream processing method, an electronic device and a storage medium, relating to the field of artificial intelligence, and specifically, to the technical fields of cloud computing, media cloud technology, and the like, which may be applied to scenes such as smart cloud. The multimedia data stream processing method includes: allocating a plurality of sub-streams of a multimedia data stream to a plurality of edge resource nodes, where the multimedia data stream is segmented into a plurality of slices and each of the plurality of sub-streams includes a part of the plurality of slices of the multimedia data stream; and scheduling the plurality of edge resource nodes to provide the plurality of sub-streams of the multimedia data stream for a terminal device.

Abstract: A liquid crystal display panel includes: a first base, a second base disposed opposite to the first base, a liquid crystal layer and a first optical compensation layer that are disposed between the first base and the second base, and a second optical compensation layer disposed on a side of the first base away from the liquid crystal layer or on a side of the second base away from the liquid crystal layer. An orthogonal projection of an optic axis of the first optical compensation layer on the first base is parallel to orthogonal projections of optic axes of liquid crystal molecules in the liquid crystal layer on the first base. An orthogonal projection of an optic axis of the second optical compensation layer on the first base is perpendicular to the orthogonal projection of the optic axis of the first optical compensation layer on the first base.

Abstract: An adaptive characteristic spectral line screening method and system based on atomic emission spectrum are provided, the method includes: using a set characteristic screening optimization method to perform a plurality of optimization rounds of characteristic screening, obtaining an initialized spectral dataset of each round of the characteristic screening and initialized characteristic population genes; obtaining an optimal characteristic population gene of each round by a set analysis method, a fitness function, and an iteration of a genetic algorithm; obtaining an optimized characteristic spectral information set when the plurality of optimization rounds reach set optimization rounds; performing combination statistics and discriminant analyses on the optimized characteristic spectral information set to complete an adaptive characteristic spectral line screening.

Abstract: A polypeptide and an application thereof in bone repair are provided. An amino acid sequence of the polypeptide provided by the invention is shown as SEQ ID NO: 1. The invention further discloses use of the polypeptide GS18 in bone injury and/or bone repair. Furthermore, the invention further discloses an application of the polypeptide GS18 as well as a polypeptide scaffold for bone repair. The polypeptide of the invention demonstrates the ability to translocate ?-catenin into the nucleus and induce the expression of secreted protein osteocalcin in vivo. In vitro, the polypeptide facilitates the osteogenic differentiation of osteogenesis-oriented BMSCs (pre-osteoblasts thereby promoting the process of bone repair.

Abstract: The present invention provides a class of novel NAMPT enzyme agonist and preparation and use thereof, which has a structural formula as shown in formula I or formula II. The present invention screens the NAMPT agonist NAT from the chemical small molecule library, and the NAT exhibits a good cytoprotective effect and a good anti-neurodegeneration effect in animal models of neurodegeneration. We studied the binding of NAT to enzymes, and then carried out multiple rounds of structure optimization based on the chemical structure characteristics of NAT and its enzyme activity properties, and obtained a relatively defined structure-activity relationship. The present patent not only lays the foundation for developing innovative drugs for anti-aging and neurodegenerative diseases, but also theoretically provides a proof-of-concept that enhancing NAMPT enzyme activity plays an important role in neuroprotection.

Abstract: Provided are a method for maintaining Walker constellation formation and a terminal device. The method comprises: determining a first offset amount of each satellite within a simulation time period according to parameters of a Walker constellation; performing first offset on each satellite according to the first offset amount to obtain a Walker constellation after the first offset; determining a second offset amount of each satellite within the simulation time period according to parameters of the Walker constellation after the first offset; and superimposing the first offset amount and the second offset amount, and performing second offset on each satellite so as to maintain the formation of the Walker constellation.

Abstract: A data migration method and apparatus, a device, a distributed system and a storage medium are provided. Said method is applied to each data node in a distributed system comprising a plurality of data nodes. Said method comprises: determining, in a current data migration task, a table to be migrated of a current node, and a target data node (S101); and writing incremental data in the table to be migrated into the table to be migrated, and a target data table of the target data node, the incremental data being data obtained by performing, after the data migration task is started, a change operation on data in the table to be migrated (S102).

Abstract: A polypeptide and an application thereof in bone repair are provided. An amino acid sequence of the polypeptide provided by the invention is shown as SEQ ID NO: 1. The invention further discloses use of the polypeptide GS18 in bone injury and/or bone repair. Furthermore, the invention further discloses an application of the polypeptide GS18 as well as a polypeptide scaffold for bone repair. The polypeptide of the invention demonstrates the ability to translocate ?-catenin into the nucleus and induce the expression of secreted protein osteocalcin in vivo. In vitro, the polypeptide facilitates the osteogenic differentiation of osteogenesis-oriented BMSCs (pre-osteoblasts thereby promoting the process of bone repair.

Abstract: A twistable and stackable shelf includes storage members, an elastic member, a first supporting pipe, a second supporting pipe, a first connecting member, and a second connecting member. Each of the first and second connecting member includes an end portion defining an inserting hole and an inserting portion defining a bottom groove and fluidly connected to the inserting hole. Two ends of the elastic member are inserted into the inserting holes and extend to the bottom grooves; two hooking members are arranged in the bottom grooves. The first and second supporting pipes form a vertical arrangement through the first and second connecting members and support the plurality of the storage members in a vertical direction. Or, the first and second supporting pipes form a horizontal arrangement through the first and second connecting members, and the storage members are twisted and stacked in the vertical direction.

Abstract: Embodiments in the present description provide an operation request processing method and apparatus, and a device, and a readable storage medium, and a system. In the present embodiment, after obtaining an operation request for a data table, a read-write node can return a request processing completion message to a requester in time without waiting for all read-only nodes; a locking operation is performed on the data table, a log of locking the data table is written into a redo log file; and after status information of the log of locking is written into a status record, a monitoring processing process can achieve log playback monitoring of all the read-only nodes by using the status record and the log of locking. Thus, an asynchronous processing mechanism is achieved, and the stability and efficiency of operation request execution are improved.

Abstract: A non-invasive blood glucose detection device and a measurement method based on a multi-technology integration is provided according to the disclosure. The device combines a near-infrared spectroscopy non-invasive blood glucose detection technology with a non-invasive blood glucose detection technology based on optical polarimetry, thus improving the detection sensitivity and accuracy, simultaneously inhibiting the influence of human background and individual differences. The AOTF can be used to achieve tunable light splitting and the output lights have two orthogonal linearly polarized light characteristics. The hardware for implementing the two methods are combined. Thus, the device has the advantages of simple structure, strong anti-interference ability and low cost. In addition, it combines the two methods on software by adopting a random forest algorithm and a data fusion algorithm, which effectively improves the prediction accuracy of non-invasive blood glucose concentration.

Abstract: A data partition storage system is provided. The system includes: a data analysis device, configured to determine, according to a data feature of target data comprised in a database, a heat level corresponding to the target data; and a database kernel, deployed on a target device different from the data analysis device to form the database, and configured to: acquire the heat level corresponding to the target data transmitted by the data analysis device; and store the target data in a storage area corresponding to the heat level.

Abstract: Embodiments of the present disclosure provide a data migration method and device, wherein the data migration method comprises: acquiring a migration request for a source database, creating a snapshot of to-be-migrated data in the source database and migrating the snapshot to a target database, reading a data migration log stored in a primary replica database of the source database and synchronizing the data migration log into the target database, and configuring a route for a target primary replica database of the target database according to routing rules of the primary replica database.

Abstract: A data reading method and apparatus are provided. The data reading method includes: receiving a data reading transaction request; acquiring a snapshot timestamp based on the data reading transaction request; and sending, when the snapshot timestamp is less than a maximum commit timestamp for a write transaction of a first database, the data reading transaction request carrying the snapshot timestamp to the first database for data reading.

Abstract: A search method based on a neural network model is provided. The neural network model includes a semantic representation model, a recall model, and a ranking model. The present disclosure relates to the field of artificial intelligence, and in particular to the technical field of search. An implementation of the method comprises: inputting a target search and a plurality of objects to be matched to the semantic representation model to obtain a first output of the semantic representation model; inputting the first output of the semantic representation model to the recall model, and obtaining at least one recall object matching the target search from the plurality of objects to be matched by using the recall model; and inputting a second output of the semantic representation model to the ranking model, and obtaining a matching value of each of the at least one recall object by using the ranking model.