45results about How to "Promote Applied Research" patented technology

The invention discloses a building method of fish head and kidney tissue derived cell lines and the obtained cell lines. The cell lines are obtained by performing a primary culture and a subculture for the treated fish heads and kidney tissues, wherein an employed cell culture medium is prepared by adding fetal calf serum, sodium pyruvate, 2-mercaptoethanol and a human basic fibroblast growth factor into a basic cell culture medium.

The present invention discloses preparation process of composite onion-shaped fullerene material with homogeneous grain size. Through chemical vapor deposition with zeolite of different types and homogeneous pore size as template, added catalyst and cheap inert gas and nitrogen as carrier gas, and in effectively controlled technological parameters, including reaction temperature, time, gas flow rate, etc. composite onion-shaped fullerene material in homogeneous grain size is prepared. The technological process of the present invention is simple and fast, and the prepared onion-shaped fullerene has high purity, stable performance and other advantages and great latent application value.

The invention provides an integrated single-fiber droplet manipulator. The integrated single-fiber droplet manipulator is characterized in that the device is composed of a section of multi-core optical fiber comprising a cladding and a fiber core, the fiber end is ground to form a cone frustum fiber end, the end face of the cone frustum fiber end is provided with a layer of liquid injection smoothporous surface film doped with a photosensitive material, and the film is provided with an array groove structure filled with a lubricating agent; when light waves transmitted by the fiber core are reflected by the cone frustum fiber end and then gathered to the liquid injection smooth porous surface film on the end face, the light waves are absorbed and converted into heat energy by the photosensitive material, a temperature gradient field is formed in an irradiation area, droplets attached to the liquid injection smooth porous surface film generate wetting gradient force under the influenceof the temperature gradient field, the droplets are affected by force, the posture of the droplets changes to generatesdirectional sliding, and finally, the droplets are controlled under the action of different temperature gradient fields by controlling the power of the light injected into the fiber core. The manipulator can be applied to the fields of hydromechanics, biology, medicine and the like.

The poly metal acid salt compound has molecular formula as Na14[MoVI126MoV28O462H14(H2O)68]íñca.300H2O, belongs to orthorhombic crystal system with space group as Cmca and single cell parameters as aú¢50.6844(4)ú¼bú¢56.3056(1)(cú¢30.6337(1)ú¼Vú¢87422.9(8)(3)ú¼Zú¢4. This product uses elementary huge-wheel ring shape as basic unit and Oxygen Bridge to link into two-dimension layer structure of calandria form, which can be used in adsorption material or solid fuel cell.

The invention discloses an infrared two-photon coincidence measurement device and method based on a periodically poled lithium niobate waveguide, and the device comprises an infrared laser device, the laser emitted by the infrared laser device sequentially passes through an optical fiber attenuator and a polarizer and then enters an optical fiber beam splitter, and the incident light is divided into two light beams; one beam of light is received by a single-photon detector after being subjected to two-photon up-conversion through a PPLN waveguide to generate visible light; and the other beam of light is received by a light intensity detector for calculating the light intensity entering the PPLN waveguide, and the infrared two-photon up-conversion efficiency of the corresponding two-photon coincidence measurement device is obtained by comparing the counting rate of the single-photon detector with the detection dependency relationship of the light intensity detector. The infrared two-photon coincidence detector overcomes the defects that an existing infrared single-photon detector is low in efficiency and large in noise, infrared two-photon coincidence measurement can be achieved more efficiently, and second-order interference experiments and application research of infrared photons are facilitated.

The invention relates to an electric conduction composite material with a poly-2, 3-dimethylaniline/polyaniline core shell structure, and a preparation method of the electric conduction composite material. In the composite material, the poly-2, 3-dimethylaniline is used as a core, and the polyaniline is used as a shell. The preparation method comprises the following steps: the poly-2,3-dimethylaniline is firstly prepared by a solution polymerization process, and then is filtered, washed, dried and ground to obtain the powdered poly-2,3-dimethylaniline; and the powered poly-2, 3-dimethylaniline is used as the core, polymerization is carried out to the surface of the powered poly-2, 3-dimethylaniline by the solution polymerization process or emulsion polymerization process, and then a product is filtered, washed, dried and ground to obtain the electric conduction composite material with the poly-2, 3-dimethylaniline/polyaniline core shell structure. In the electric conduction composite material with the poly-2, 3-dimethylaniline/polyaniline core shell structure, the electric conductivity of the poly-2, 3-dimethylaniline/polyaniline is remarkably improved, thereby being beneficial tobeing applied to the field of sensors, electric conductive devices, electrode active materials and the like.

The invention discloses a vehicle trajectory clustering method based on a parallel ST-AGNES algorithm, and the method is characterized in that multiple processing units are utilized to work together,and a certain task is executed at the same time to achieve higher performance. Parallel computing is an effective means for improving the computing speed and the processing capacity of a computer system. Therefore, the invention provides the vehicle trajectory clustering method based on the parallel ST-AGNES algorithm from a brand-new perspective, and the vehicle trajectory time and space similarity measurement method based on dynamic time warping better solves the problems of different vehicle trajectory sampling rates and inconsistent time scales. The method comprises the steps: constructinga time and space similarity matrix of vehicle tracks; studying a splitting scheme of irregular trajectory data and a communication mechanism of parallel computing, wherein one of the object-orientedtrajectory data splitting schemes is an object-oriented trajectory data splitting scheme; carrying out clustering connection based on the minimum distance, and designing a parallel STAGNES algorithm oriented to vehicle trajectory data.

The invention discloses a deep learning image denoising method and device for an infrared thermal imaging system. The method comprises the steps: obtaining a target object image collected by the infrared thermal imaging system, carrying out down-sampling processing, and segmenting the target object image into sub-images; performing image block extraction and pixel recombination on each sub-image to obtain a pre-processed sub-image; constructing a noise map, and adding the noise map as an additional channel to the preprocessed sub-image as an input image; taking the input image as a trained deep learning model, and outputting an estimated value of noise; and removing the estimated value of the noise from the target object image to obtain a denoised image. According to the method, rich structural features and similarity of the image can be fully utilized, context information in image block features can be better utilized, image features are fully extracted, a better effect is achieved under the condition that feature values of the infrared image are few, and application research of infrared thermal imaging and the deep learning technology is facilitated.

The invention provides a method and system for improving the adversarial defense capability of a Bayesian neural network, and relates to the technical field of Bayesian neural networks in the deep learning direction and adversarial defense, and the method comprises the following steps: a network training step: inputting initial data, and optimizing a cross entropy loss function and the KL divergence between parameter distribution and prior distribution to obtain a network model; training the initial data; and a robustness enhancement step: taking the parameters of the Bayesian neural network as input, calculating and optimizing the mathematical expectation of the spectral norm of the network parameter matrix, and reducing the sensitivity of the network to various noises according to the optimized mathematical expectation, thereby improving the adversarial defense capability of the Bayesian neural network model to the noises. According to the invention, the adversarial robustness of the Bayesian network model can be effectively improved, and the application prospect of the network model in practical problems is effectively enhanced; the output uncertainty of the network model is effectively reduced, the prediction of the network to the adversarial sample is more consistent, and the noise resistance of the network model is improved.

The invention provides a method for preparing a two-dimensional porous nano material based on diphenylacetylene molecule self-assembly. The method aims to prepare the two-dimensional nano material with a uniform porous structure on the surface of the single crystal by utilizing diphenylacetylene molecule self-assembly under an ultrahigh vacuum condition. The method comprises the following steps that 1, argon ion sputtering is carried out on a metal single crystal substrate, then annealing is carried out, and the sputtering and annealing processes are repeated; and 2, the metal single crystal treated in the step 1 is placed in an ultrahigh vacuum preparation cavity and heated to 50-53 DEG C, then diphenylacetylene molecules are deposited on the surface of the metal single crystal under the room temperature condition, the deposition time is 3-5 s, and the two-dimensional porous nanometer material is prepared. The method is simple in process, and the nanometer material with the uniform porous structure can be obtained. The pore size is 3.37 nm to 3.46 nm, the thickness of the pore wall is 0.7 nm to 1.2 nm, the height is 115 pm to 125 pm, and the coverage rate can reach 18% to 30%.

The invention provides a multi-province quinone polymer and a preparation method thereof, and the preparation method comprises the following steps: selecting modified montmorillonite as a template, and polymerizing polycyclic aromatic hydrocarbon and anhydride into the multi-province quinone polymer, the polymer has a nano lamellar structure.

The invention relates to the technical field of terahertz imaging, in particular to a single-pixel imaging method and system based on terahertz free electron laser, and the main points of the technical scheme are that the method comprises the following steps: S1, providing a single-pixel imaging system based on terahertz free electron laser; and S2, on the single-pixel imaging system, obtaining a target object image according to a generalized orthogonal tracking algorithm. The method has the advantages of being good in reconstructed image quality, high in peak signal-to-noise ratio and high in structural similarity.

The invention discloses a liquid crystal state composite fiber membrane as well as preparation and application thereof. The method comprises the following steps of mixing cholesteryl nonanoate and cholesteryl oleyl carbonate according to a formula ratio, heating until the temperatures of the two liquid crystal compounds reach the clearing point temperature or above, fully stirring until the two liquid crystal compounds are fully mixed, and cooling to obtain powder, so as to obtain CN-COC binary blended liquid crystal; and then adding the liquid crystal and a polyurethane elastomer into dichloromethane according to a formula ratio, stirring a mixture until solutes are completely dissolved, and obtaining the composite fiber membrane through an electrostatic spinning technology. The liquid crystal state composite membrane not only has liquid crystal state ordered fluidity and good biological performance, but also has the elastic characteristic of polyurethane, has good biological performance and mechanical performance, and can be used for constructing a biological membrane model imitating the extracellular matrix of the living body, and the influence of the liquid crystal performance of the living body on cell behaviors is researched on the basis, so that theoretical and technical supports are provided for ascertaining the interaction between the cells and the matrixes in the microenvironment of the living body.