13results about How to "High research value" patented technology

The application relates to a ferroelectric monolayer vanadium trichloride film and a preparation method thereof. The method comprises the following steps: evaporating and depositing VCl3 powder on the surface of a NbSe2 substrate under an ultrahigh vacuum atmosphere, and performing annealing treatment, so that the ferroelectric monolayer vanadium trichloride film is obtained. The sample preparation strategy of molecular beam epitaxy under an ultrahigh vacuum environment is used, high-purity VCl3 powder is evaporated and deposited on a NbSe2 substrate, an atomically flat monolayer VCl3 sample is obtained through annealing treatment, in-situ scanning tunneling microscope technology and scanning tunneling spectrum technology are combined, and it is determined that the monolayer VCl3 is a semiconductor material with ferroelectricity. The method provides a new method and idea for introducing ferroelectricity in the family of transition metal trichlorides, has high application potential and scientific research value, meanwhile, the successful introduction of ferroelectricity in the system also provides a new platform for carrying out multi-state regulation and research.

The invention relates to the technical field of test design, in particular to a key factor mining-based accommodating and arranging condition optimization method, medium and equipment, which are characterized in that accommodating and arranging conditions are generated by analyzing a target text, an initial simulation queue is constructed in combination with database retrieval, and baseline feature distribution is analyzed, so that representative research crowds can be obtained without real object recruitment; the test cost is reduced; a panoramic object feature matrix is constructed by integrating multi-dimensional data, the limitation of a single feature is broken through, and comprehensive data support is provided for key factor mining; the contribution degree of each characteristic variable to the preset key outcome is analyzed based on the matrix, and the key characteristic variables are positioned, so that the experience driving is changed into the data driving, and the scientificity and the pertinence of the accommodating and arranging condition design are improved; the accommodating and arranging conditions are dynamically adjusted through the closed-loop optimization process, it is ensured that the target accommodating and arranging condition set gives consideration to queue representativeness, feature pertinence and distribution rationality, and the design scientificity and success rate of clinical tests are improved.

The invention discloses a clinical tag labeling method, system and equipment based on a standardized time sequence and a medium, and relates to the technical field of clinical event fusion and dynamic tag generation, and the specific steps are as follows: obtaining clinical event data of a patient from different clinical business systems in real time, dividing cycle attribution for the clinical event data, and determining the clinical event data; and establishing a dynamic weight calculation model to allocate dynamic weight values, establishing a periodic clinical state inference model by adopting a convolutional neural network and training the periodic clinical state inference model, inputting weighted summary clinical feature vectors in a current patient period according to the trained periodic clinical state inference model, and outputting clinical tags corresponding to patients. According to the invention, clinical label labeling based on a standardized time sequence is realized, multi-source clinical event data from different clinical business systems can be collected in real time, event weights are reasonably distributed through a dynamic weight calculation model, a periodic clinical state is deduced by using a convolutional neural network, and clinical labels of patients are automatically generated.

The invention relates to an optical element testing system, in particular to an optical element performance testing system and method based on ultralow-temperature high-vacuum coupling, and aims to solve the problem that an existing testing system cannot test the performance of an optical element while simulating an ultralow-temperature and ultrahigh-vacuum sequential coupling environment. Precision testing equipment is protected, and all-parameter and multi-attitude stable and accurate testing of the optical element is achieved. The system comprises a testing container and a tested container which are communicated with each other, and a high-reflectivity one-way film evaporation container is arranged in the testing container and used for slowing down temperature and pressure sudden change during vacuumizing so as to protect internal testing equipment; a contact type optical element clamping cold box is arranged in the tested container, is connected with the optical element through a flexible cold chain, and is matched with a liquid nitrogen / gas nitrogen system to realize proportional temperature regulation. The device can safely and truly simulate the extreme environment of a spaceflight deep space, and achieves the stable and accurate testing of all parameters and multiple attitudes of the optical element.

This invention discloses a magnetically integrated three-phase EMI filter, comprising a toroidal magnetic core and a Y-shaped magnetic arm. The Y-shaped magnetic arm is placed inside a window of the toroidal magnetic core, with an air gap between the tip of each magnetic arm and the toroidal magnetic core. Three-phase windings are symmetrically wound on the toroidal magnetic core and the Y-shaped magnetic arm: the three-phase windings on the toroidal magnetic core are wound in the same way as a three-phase common-mode choke, and the three-phase windings on the Y-shaped magnetic arm are wound in the same way as a conventional EE-type three-phase differential-mode inductor. The output terminals of the windings on the toroidal magnetic core are connected to the input terminals of the in-phase windings on the Y-shaped magnetic arm. This filter allows for independent adjustment of the differential-mode and common-mode inductors. Under the same interference suppression performance, the magnetically integrated filter of this invention significantly reduces size and weight compared to conventional three-phase EMI filters. This invention has high research and application value for high-performance, high-reliability permanent magnet synchronous motor drive systems.

This invention provides a carbon nanotube / polypyrrole / MoS 2 Composite electrode materials and their preparation methods, along with their application in CDI desalination, first employ in-situ polymerization to construct a 3D conductive interconnect structure from multi-walled carbon nanotubes and polypyrrole as a growth substrate, and then anchor MoS2 on its surface via a hydrothermal reaction. 2 Nanosheets to alleviate MoS2 2 Stacking of nanosheets. 3D conductive carbon nanotubes / polypyrrole improve the wettability of the composite material, provide a convenient movement path, accelerate charge transport rate, and promote ion diffusion. MoS 2 The enhanced dispersion and expanded layer space of the nanosheets provide ample intercalation sites for ion capture and rapid transfer. The tight chemical coupling of the Mo-N-C bonds ensures the structural stability of the composite electrode material. Therefore, the composite electrode material of this invention exhibits excellent adsorption capacity, ultrafast deionization rate, strong stability, and regenerability, making it a valuable reference and research material for the development of novel, high-efficiency desalination electrode materials.

The application relates to the technical field of cell culture, and discloses a tracheal fibroblast cell and application thereof, the cell being a guinea pig tracheal fibroblast immortal cell, and the preservation number being CGMCC No. 46764. In the application, the cell has good susceptibility to respiratory tract pathogens and excellent transfection efficiency. The cell can be used for isolating or culturing respiratory tract pathogens, preparing respiratory tract pathogen vaccines, screening and / or preparing medicines for preventing and / or treating diseases caused by respiratory tract pathogens, serving as a host cell for researching respiratory tract pathogens, detecting respiratory tract pathogens for non-diagnostic purposes, and constructing an in-vitro model of respiratory tract pathogen infection, and has high scientific research value and practical application potential.

The utility model discloses a kind of abandoned mud vacuum-shaft-electroosmosis combined dewatering test devices, belong to geotechnical test technical field.The device is composed of modularized model cylinder, direct-current power supply system, measurement system, vacuum pump and vertical vacuum drainage body.Model cylinder is formed by bolt connection and encryption sealing ring stacking by top cylinder, middle cylinder and bottom cylinder, height can be flexibly adjusted and good airtightness is maintained;Standard quick connector is equipped on cylinder side, vacuum gauge and pore pressure sensor are conveniently connected.Direct-current power supply connected anode and cathode electrode piece are respectively placed on mud top surface and bottom surface, vertical vacuum drainage body is through to bottom horizontal drainage layer and is fixed in positioning frame, and constitute vacuum-shaft combined drainage channel.The device is coupled by vacuum, shaft and electroosmosis, effectively overcome vacuum pressure transmission attenuation, drainage path too long and electroosmosis dewatering unevenness etc., can realize the accurate research of mud different depth dewatering mechanism, with the advantages of fast dewatering, simple operation and environmental protection high efficiency.

This invention belongs to the fields of molecular biology and molecular marker technology, specifically relating to a SNP molecular marker located on chromosome 5 that is associated with abnormal serum lipase levels in pigs and its application. The SNP site of the described molecular marker corresponds to the T / A mutation at position 94933629 bp on chromosome 5 of the International Pig Reference Genome 11.1. Polymorphism at this site affects the incidence of abnormal serum lipase levels in Wuzhishan pigs. By optimizing the dominant allele at the aforementioned variant site, the frequency of the dominant allele can be increased generation by generation, reducing the incidence of abnormal serum lipase levels in Wuzhishan pigs. This invention utilizes molecular breeding methods to solve the genetic improvement problem of abnormal serum lipase levels in Wuzhishan pigs, improving the commercial and scientific research value of Wuzhishan pigs, accelerating the progress of genetic improvement in Wuzhishan pigs, and thus effectively improving the economic benefits of breeding pigs.

The application provides a method for preparing a low-cost positive electrode material of a potassium ion battery by using iron elements, and belongs to the field of new energy materials.The specific implementation steps of the method are as follows: (1) performing solvent thermal treatment on raw material powder; (2) performing pre-calcination on the powder obtained in step 1; (3) performing tabletting treatment on the product obtained in step (2); and (4) performing high-temperature calcination on the product obtained in step (3).The positive electrode material prepared by the method has a non-layered structure, and has the advantages of simple process, low cost and suitability for large-scale production, and the electrochemical performance of the positive electrode material applied to the potassium ion battery has great research value.

This invention belongs to the field of animal molecular genetics and breeding technology, specifically relating to a SNP molecular marker located on chromosome 3 that is associated with abnormal serum alkaline phosphatase levels in pigs and its application. The SNP site of the aforementioned molecular marker corresponds to the T / C mutation at position 53681151 bp on chromosome 3 of the International Pig Reference Genome 11.1. Polymorphism at this site affects the incidence of abnormal serum alkaline phosphatase levels in Wuzhishan pigs. By optimizing the dominant alleles at the aforementioned variant site, the frequency of dominant alleles can be increased generation by generation, reducing the incidence of abnormal serum alkaline phosphatase levels in Wuzhishan pigs. This invention utilizes molecular breeding methods to solve the genetic improvement problem of abnormal serum alkaline phosphatase levels in Wuzhishan pigs, improving the commercial and scientific research value of Wuzhishan pigs, accelerating the progress of genetic improvement in Wuzhishan pigs, and thus effectively improving the economic benefits of breeding pigs.

The invention relates to the technical field of cell culture, and discloses a tracheal epithelial cell and application thereof, the cell is a guinea pig tracheal epithelial immortalized cell, and the preservation number is CGMCC No. 46763. In the invention, the cell has good susceptibility to respiratory pathogens, and has excellent transfection efficiency. The cells can be used for separating or culturing respiratory pathogens, preparing respiratory pathogen vaccines, screening and / or preparing medicines for preventing and / or treating diseases caused by the respiratory pathogens, serving as host cells for researching the respiratory pathogens, detecting the respiratory pathogens for a non-diagnostic purpose and constructing organoids. The method has high scientific research value and practical application potential.

The application discloses a modulation method for suppressing common-mode voltage high-frequency harmonics. The method re-synthesizes a virtual voltage vector, adopts a virtual voltage vector to synthesize a reference vector, and adopts effective vectors with opposite phases to synthesize a zero vector, so that common-mode voltage waveforms between carrier periods are completely identical and positive and negative polarity acting time is equally divided. According to the characteristics of the common-mode voltage waveform, the modulation strategy can completely eliminate harmonics at even multiple carrier frequencies and sideband harmonics near each carrier frequency while reducing the common-mode voltage amplitude, and effectively reduces the adverse effects caused by the common-mode voltage amplitude and high-frequency harmonics. The modulation method greatly reduces the content of common-mode voltage high-frequency harmonics, reduces harmonic loss and the adverse effects of the common-mode voltage on a motor system, and has high research value and application value.