Abstract: A calcium-magnesium composite fireproof and flame-retardant material, a preparation method and applications thereof, and a flame-resistant optical/electrical cable and a preparation method thereof are provided. The present disclosure only uses water as a solvent, VAE latex as a polymer matrix, a biomass calcium material and magnesium hydroxide as fillers, and the raw materials have low price and are easy to obtain. The calcium-magnesium composite fireproof and flame-retardant material has excellent flame retardancy and mechanical strength. The present disclosure utilizes the layered structure of the biomass calcium material, a gas generation mechanism, stable thermal decomposition products, and excellent mechanical properties, and can effectively enhance the flame retardancy and mechanical properties of the calcium-magnesium composite fireproof and flame-retardant material.

Abstract: A fireproof and flame-retardant material based on waste slag of aluminum factory, a preparation method and applications thereof, and a flame-retardant cable and a preparation method thereof are provided. The present disclosure provides a fireproof and flame-retardant material based on waste slag of aluminum factory, measured by weight parts, including raw materials: waste slag of aluminum factory (dry weight) 1-6 phr, inorganic hydroxide 0-6 phr, VAE latex 3-8 phr, and water 20-50 phr. The present disclosure only uses water as a solvent, VAE latex as a polymer matrix, the waste slag of aluminum factory and inorganic hydroxide as fillers. The price of raw materials is low and easy to obtain. The fireproof and flame-retardant material based on the waste slag of aluminum factory has excellent flame retardant, tensile strength, elongation and gram weight.

Abstract: A fingerprint detection method and apparatus, a program product, and a storage medium are provided. The method includes: obtaining native domain information of a to-be-detected fingerprint, where the native domain information is original data collected when the to-be-detected fingerprint is verified; executing fingerprint feature extraction on the native domain information to obtain a fingerprint feature matrix of the to-be-detected fingerprint; executing a classification operation on the fingerprint feature matrix through a trained medium classification network to obtain a fingerprint medium classification vector of the to-be-detected fingerprint, where the fingerprint medium classification vector is used for representing, in a vector form, a probability that the to-be-detected fingerprint belongs to a plurality of medium types respectively; and determining a medium type of the to-be-detected fingerprint based on the fingerprint medium classification vector.

Abstract: A method for recognizing fingerprint medium consistency is provided. the method includes: obtaining current to-be-verified fingerprint data; searching for target fingerprint template data matching the current to-be-verified fingerprint data in a registered fingerprint template dataset; searching for a target feature descriptor corresponding to the target fingerprint template data in a template feature descriptor set; and generating a verification feature descriptor using the pre-trained feature extraction network based on the current to-be-verified fingerprint data, and generating a current medium consistency probability of a verification fusion feature using a pre-trained feature fusion classification network based on the verification feature descriptor and the target feature descriptor.

Abstract: Provided are a preparation method of a nanofiltration membrane with a tree-like structure and use. The preparation method includes: taking a cellulose fiber filter paper as a substrate, and allowing hydroxyapatite nanowire arrays to grow in situ through solvothermal synthesis to obtain a composite filter paper; and repeatedly soaking the composite filter paper in a solution of trimesic acid and iron chloride in ethanol to allow continuous deposition to obtain the nanofiltration membrane with the tree-like structure. The nanofiltration membrane with the tree-like structure of the present application has a larger surface roughness and a larger specific surface area than the conventional nanofiltration membranes, and thus exhibits a very high interception rate (higher than 94%) for anionic/cationic dyes and heavy metal ions Pb2+. Therefore, the nanofiltration membrane with the tree-like structure of the present application has excellent environmental benefits.

Abstract: Provided is an audio synthesis method. Music score data of target music is acquired, wherein the music score data includes audio data identifiers and performance time information corresponding to a plurality of sub-audios, an instrumental timbre corresponding to each of the sub-audios being matched with a hearing-impaired hearing timbre; the sub-audios based on the audio data identifiers corresponding to each of the sub-audios is acquired; and a synthetic audio of the target music is generated by performing a fusion process on the sub-audios based on the performance time information corresponding to each of the sub-audios.

Abstract: An airspace network optimization method based on a flight normality target is capable of comprehensively considering spatial and temporal distribution of national air traffic demands, a service capability of an airspace network and a capacity increase limit of each airspace unit according to the flight normality optimization target on the basis of carrying out pre-analysis on a flight operation efficiency under a current airspace service capability, to position a key problem airspace and generate a capacity expansion suggestion of the related airspace; and aims at improving the flight operation efficiency by expanding the airspace service capability, and providing technical support for a user to carry out analysis and optimization work of national airspace network problems at a strategic level.

Abstract: A time-space conversion method of flight sequencing information aims to solve a problem that a flight sequencing suggestion generated by an arrival management system has poor effect in practical application due to abstract characteristics, comprising: generating a sequencing time and a delay suggestion of a flight in each key point in a terminal area and each runway by using a flight sequencing technology; predicting a flight status of the flight according to a current position and 4D trajectory information of the flight, and filtering a delay-consumed flight segment, and on that basis, generating a flight segment delay allocation strategy with reference to an aircraft performance and sequencing information, and obtaining a flight segment delay allocation result; and generating a visual spatial position reference target according to the flight segment delay allocation result and an operation deviation limit.

Abstract: The present invention provides a method, an oligonucleotide and a kit for detecting HBV genotypes, which by use of the fluorescent PCR technology, not only can determine the presence or absence of HBV DNA in a sample, but also can achieve the genotype identification of HBV genotypes A, B, C, D and C/D recombinant type that may be present in the sample.

Abstract: The present invention discloses a method and an apparatus for extracting mountain landscape buildings based on high-resolution remote sensing images. The method comprises: segmenting a remote sensing image, and extracting non-vegetation areas from the remote sensing image by using NDVI; segmenting the non-vegetation areas, and extracting building areas by using NDBI; segmenting the building areas again, and calculating a normalized difference build shadow index NSBI of each patch; calculating NSBI separator of each patch in the non-vegetation areas and setting a separator threshold, and extracting landscape building areas based on the threshold. In the present invention, by introducing a near infrared band in the remote sensing image spectrum, in which there is a significant difference between shadows and non-shadows, the influence of large shadow areas in mountainous shady areas in the remote sensing image on the result of extraction is reduced.

Abstract: This application describes a virtual machine deployment method and an operation and maintenance management (OMM) virtual machine. The method includes: obtaining, by an OMM virtual machine, a quantity and a specification of service virtual machines created in virtual network function application software to which the OMM virtual machine belongs; and determining, by the OMM virtual machine based on load that needs to be carried by the application software and the quantity and the specification of the service virtual machines, a module to be configured for each service virtual machine. The described implementations avoid or reduce waste of virtual machine resources.

Abstract: A flight schedule optimization method based on a flight normality target is capable of carrying out pre-analysis on flight operation efficiency of a current flight schedule based on a national air traffic control service capability, and on this basis, generating a corresponding flight schedule adjustment suggestion according to a flight normality optimization target, which aims to provide a technical support means for carrying out flight schedule rationality analysis and optimization in strategic air traffic flow management.

Abstract: A time-space conversion method of flight sequencing information aims to solve a problem that a flight sequencing suggestion generated by an arrival management system has poor effect in practical application due to abstract characteristics, comprising: generating a sequencing time and a delay suggestion of a flight in each key point in a terminal area and each runway by using a flight sequencing technology; predicting a flight status of the flight according to a current position and 4D trajectory information of the flight, and filtering a delay-consumed flight segment, and on that basis, generating a flight segment delay allocation strategy with reference to an aircraft performance and sequencing information, and obtaining a flight segment delay allocation result; and generating a visual spatial position reference target according to the flight segment delay allocation result and an operation deviation limit.

Abstract: An airspace network optimization method based on a flight normality target is capable of comprehensively considering spatial and temporal distribution of national air traffic demands, a service capability of an airspace network and a capacity increase limit of each airspace unit according to the flight normality optimization target on the basis of carrying out pre-analysis on a flight operation efficiency under a current airspace service capability, to position a key problem airspace and generate a capacity expansion suggestion of the related airspace; and aims at improving the flight operation efficiency by expanding the airspace service capability, and providing technical support for a user to carry out analysis and optimization work of national airspace network problems at a strategic level.

Abstract: The present disclosure relates to the technical field of heat exchange devices, and in particular, to a plate, a plate assembly and a heat exchanger. The plate comprises a plate body and a first through hole and a second through hole provided on the plate body; the plate body forms a pipe segment around the first through hole, and the second through hole is arranged close to the outer periphery of the pipe segment.

Abstract: A method and a system for authorizing acquisition of an attack alarm information log of a terminal, belonging to the field of communication technology, the method includes: after obtaining the authentication account with an authority to obtain the attack alarm information log, a server authenticates the legality of a client tool; after the legality passes the authentication, the terminal sends a second to-be-authenticated data to the client tool, and the client tool sends the second to-be-authenticated data to the server; after the second to-be-authenticated data passes the authentication, the server encrypts the second to-be-authenticated data to generate a second authentication data, and sends the second authentication data to the terminal; if the second authentication data passes the authentication, the terminal obtains and encrypts the attack alarm information log, and then sends it to the client tool after encryption.