31results about How to "Maintain properties" patented technology

According to the model conversion method provided by the invention, the height map of the terrain and the weight distribution maps of the plurality of material layers are acquired, the target three-dimensional grid model is generated according to the height map, the weight distribution maps of the plurality of material layers are combined to generate the weight map, and based on the position of the target three-dimensional grid model in the world coordinate system, the target three-dimensional grid model is converted into the target three-dimensional grid model. Calculating texture mapping coordinates; and generating a material instance corresponding to the target three-dimensional grid model according to a preset material template, the weight map and the texture mapping coordinate. Through effective integration and conversion processing of terrain height information and multilayer material weight information, automatic conversion from two-dimensional terrain data to a three-dimensional grid model with complete material information is realized, and it is ensured that the finally generated three-dimensional model can accurately express a complex material mixing effect. And the visual authenticity and rendering efficiency of the terrain model are obviously improved.

The utility model discloses a kind of rice powder microwave heating curing device and rice powder machine with the device, the curing device includes extruding component, it includes extruding cylinder, further include microwave heating assembly, microwave heating assembly is arranged on the outer wall of extruding cylinder.Microwave heating assembly includes magnetron;Extruding component includes machine cylinder component and extruding screw rod, machine cylinder component includes inner cylinder and extruding cylinder;The sidewall of the extruding cylinder is equipped with multiple microwave guide inlets;Inner cylinder is arranged in the extruding cylinder, and the feed inlet of inner cylinder is communicated with the feed pipe;Extruding screw rod is arranged in the inner cavity of the inner cylinder;Each guide inlet on extruding cylinder is equipped with a microwave heating assembly, and guide inlet is fixedly connected with the magnetron.This rice powder microwave heating curing device directly heats rice powder by microwave, is easy to control heating temperature, energy saving and environmental protection, can solve the problem that material is unevenly heated, heating time is long, energy consumption is big in rice powder heating curing process.

The present disclosure relates to a cell proliferation inhibitor comprising glutamic acid, and a method for regulating the proliferation of cells using the same.

The invention belongs to the field of lubricating oil filter elements, and particularly relates to a cell capsule wrapped type double-treatment lubricating oil multi-agent filter element structure which comprises a filter element body. The mixing mechanism is mounted in the filter element main body and is used for sufficiently and uniformly combining the released medicament with the lubricating oil; the retaining mechanism is mounted in the filter element main body and is used for actively crushing medicament aggregates contained after the lubricating oil and the medicament are mixed; the release mechanism is mounted in the filter element main body and is used for releasing the medicament in the cell capsule in a matched manner according to the amount of the lubricating oil; the release mechanism comprises an annular cell capsule wrapping ring fixedly connected to the interior of the filter element main body, and the bottom of the annular cell capsule wrapping ring is rotationally connected with a valve disc through a bearing; a worm wheel is used for sensing flow through the release mechanism, a valve disc is driven through a gear set, accurate matching of the medicament release rate and the lubricating oil flow is achieved, and the problems that a traditional structure is not accurate in release and large in concentration fluctuation are fundamentally solved.

The utility model relates to fermentation equipment technical field especially relates to a reaction kettle for dandelion wine fermentation, including reaction kettle, lid, motor, stirring rod, spiral pipe and flange connector, the lid passes through bolt installation in the top of reaction kettle, and the motor fixed connection is established on the lid, and the stirring rod is connected with the motor, and is placed in the inside reaction kettle, and the installation cavity is opened to the reaction kettle, and the spiral pipe is installed in the installation cavity, and the upper and lower ends of spiral pipe all extend to the outside reaction kettle, and the upper and lower two flange connectors are arranged in the upper and lower ends of spiral pipe respectively. The utility model discloses through to the spiral pipe water supply or is supply hot gas, realizes temperature accurate regulation, can ensure that the temperature in the reaction kettle maintains in the suitable range, promotes yeast activity, improves fermentation efficiency, and ph value sensor and brix sensor can real -time monitoring the key index of fermentation process, help operator to judge fermentation process.

The invention relates to the technical field of image data processing, in particular to a reactor detection image data processing method and system based on 3D scanning. According to the technical scheme, the method comprises the steps that a 3D scanner is used for scanning the surface of a building, and three-dimensional point cloud data of the surface of the building are obtained; filtering the scanning data to obtain a three-dimensional coordinate data file of the surface of the building, wherein the three-dimensional coordinate data file comprises all collected data points; data points in the three-dimensional coordinate data file are integrated and analyzed, detection data points are extracted, and a detection data point set is obtained through integration; and calling the detection data points in the detection data point set to construct a building three-dimensional model, and smoothing the constructed building three-dimensional model. The method has the advantages that the distribution extraction coefficient and the feature extraction coefficient of the data points in each grid are obtained through distribution calculation, the comprehensive extraction coefficient is calculated through integration, and the data point extraction proportion in each grid is calculated based on the comprehensive extraction coefficient.

The invention discloses food paper based on plant fibers and PLA (polylactic acid) lamination and a preparation method of the food paper, and belongs to the technical field of polylactic acid lamination papers.Acrylate monomers and organic silicon modified alkyl acrylate containing flexible chain segments are subjected to in-situ polymerization on TEMPO oxidized nano-cellulose under a controllable catalytic system, so that the food paper is obtained; the preparation method comprises the following steps: polymerizing a cellulose skeleton, anchoring a polymerized chain segment on the cellulose skeleton in a chemical manner, constructing an organic interface layer with certain flexibility on the surface of nano-cellulose to obtain a modified nano-cellulose filler with a stable structure, blending the modified nano-cellulose with polylactic acid to prepare a film spraying master batch, and combining the film spraying master batch with plant cellulose base paper through a film spraying process to prepare the plant cellulose composite film. The preparation method is simple and easy to operate, the food paper which is compact in lamination and uniform in attachment is obtained, stable attachment of the paper base and the PLA lamination is achieved while the bio-based and degradable characteristics of the material are kept, interface defects and delamination risks are reduced, the mechanical property and use reliability of the food paper are improved, and the food paper is suitable for food packaging application.

[Problem]To improve abrasion resistance while maintaining an anti-glare property. [Solution] An optical laminate 10 is provided with a transparent substrate 11, at least one or more hard coat layers 12 that are provided on the transparent substrate 11 and are made of a resin composition, and at least one or more metal-oxide layers (adhesion layer 13, antireflection layer 14) that are provided on the hard coat layer 12 and are made of a metal oxide. A concave / convex structure is formed on the metal-oxide layer side surface of the hard coat layer 12, and the height distribution of the surface of the concave / convex structure satisfies the following formula (1). (1): A / 1.9 < P where A is the height of the highest point on the surface of the concave / convex structure when the height B of the lowest point on the surface of the concave / convex structure is defined as 0, and P is the mode of the height distribution of the surface of the concave / convex structure when the height B of the lowest point on the surface of the concave / convex structure is defined as 0.

The application discloses a Gitta virus genetically engineered subunit vaccine and a preparation method and application thereof, and belongs to the technical field of vaccine preparation. The Gitta virus P6E recombinant protein is obtained by using a eukaryotic expression system, and is further loaded on the surface of a nanoparticle skeleton to form a recombinant nanoparticle. The obtained recombinant protein and the recombinant nanoparticle are respectively compounded with an adjuvant to prepare the genetically engineered subunit vaccine. After twice immunization, the vaccines of the two components can significantly induce the host to produce strong humoral immune and cellular immune responses, thereby providing effective protection against GETV infection. The technical scheme of the application provides an important technical basis and application reference for research and optimization of the Gitta virus vaccine.

The application belongs to the technical field of three-dimensional electromagnetic radiation numerical solution, and relates to an electromagnetic radiation simulation analysis method based on local grid self-adaptive division. Firstly, the application carries out finite element modeling on a target antenna, introduces PML boundary and wave port excitation to establish a corresponding finite element calculation domain model, and adopts tetrahedral grid division to classify the calculation domain model; then finite element electromagnetic radiation simulation analysis is carried out to obtain finite element solution, and error estimation and encryption strategy are used to give the encryption size of the grid nodes in the non-PML region; finally, the grid is encrypted, finite element electromagnetic radiation simulation analysis is carried out again, and the process is repeated until the overall solution error is less than the set error limit, the final calculation grid is obtained, and finite element electromagnetic radiation simulation analysis is carried out. The application only encrypts the tetrahedral grid in the non-PML calculation domain, ensures the original characteristics of the tetrahedral grid in the PML calculation domain, and realizes the rapid simulation design of the antenna radiation characteristics while ensuring the calculation accuracy.

The application belongs to the field of biological detection, and particularly relates to an isothermal amplification kit for detecting porcine circovirus type 3. The application provides an isothermal amplification detection primer group for porcine circovirus type 3 (PCV3), which comprises a pair of outer primers (LOF and LOR) and a pair of inner primers (LIF and LIR) and is designed according to the conserved sequence of the porcine circovirus type 3. The primer group has low design difficulty, and maintains similar sensitivity and specificity to other isothermal amplification reactions such as a loop-mediated isothermal amplification method, can be suitable for target sequences with higher GC content and below 200 bp, has no denaturation and annealing process, is suitable for on-site detection, and has great application potential.

The invention discloses a power generation power prediction method, a control device and a power grid system, the power generation power prediction method is applied to the power grid system, and the method comprises the steps: obtaining historical power generation data of the power grid system in a first preset time period, the historical power generation data comprising historical power generation power and meteorological data, constructing a feature matrix according to the historical power generation data of the first preset time period; performing feature processing on the feature matrix to obtain a training data set; training a deep learning hybrid model based on time sequence prediction through the training data set to obtain a prediction model; and according to different time steps of a time sliding window of the prediction model, predicting the historical power generation data of the second preset time period to obtain a power generation power prediction result obtained by predicting at different time steps. According to the embodiment of the invention, the accuracy of power prediction can be improved.

A high-frequency dielectric heating adhesive (1A) contains a thermoplastic resin (A) and a cyano group-containing organic compound (B), and the high-frequency dielectric heating adhesive (1A) satisfies (1) below: (1) the high-frequency dielectric heating adhesive (1A) has a total luminous transmittance of 50% or more as measured in accordance with JIS K 7361-1:1997.

A kind of wood fiber cellulose sponge processing mould, the inside of sponge bearing table is equipped with wood fiber cellulose sponge, the size of sponge bearing table is adapted according to the size of wood fiber cellulose sponge, there is interval between sponge conveying platform and sponge bearing table, the lower end of sponge conveying platform is equipped with fixed block and limiting U-shaped groove fixed by welding, a pair of fixed blocks are arranged in total in the lower end of sponge conveying platform, two limiting U-shaped grooves are arranged in total in the lower end of sponge conveying platform, and fixed block is located in the two limiting U-shaped grooves.This utility model can realize the positioning of wood fiber cellulose sponge with different sizes and shapes by setting limiting U-shaped groove below sponge conveying platform and using sliding bracket for sliding adjustment.Meanwhile, the position of sliding bracket is further fixed by first butterfly bolt on fixed block, ensuring the stability during conveying, adapting to the processing needs of wood fiber cellulose sponge with various specifications, improving equipment versatility;Reducing manual intervention, reducing operation difficulty and improving production efficiency.

The invention discloses a rapid direct positioning method and device based on deep structured tensor completion, and the method comprises the steps: carrying out the discretization of a target state space of a to-be-positioned target, and constructing a high-dimensional discrete grid frame corresponding to a high-order target positioning likelihood tensor; performing sparse sampling on the high-dimensional discrete grid frame to obtain a sparse observation tensor; performing structured decomposition on the sparse observation tensor through a preset deep structured tensor complementation network to obtain a main peak structure representing a real state of the target and a background structure representing environmental interference; and determining a target state estimation value of the to-be-positioned target based on the maximum index of the factor vector of the main peak structure. According to the method, full-grid exhaustion search is not needed, and on the premise of keeping DPD physical structure characteristics and positioning precision, the calculation complexity is remarkably reduced, the likelihood value calculation total amount is reduced, and the positioning robustness and generalization ability are improved.

This invention relates to the field of computer-aided engineering technology and discloses a method for generating unstructured meshes based on graph convolutional networks (GCNs) and high-order size fields. It aims to solve the problems of striping artifacts easily generated when generating size fields from STL background meshes, and the excessive computational burden caused by global encryption. The method first generates an initial size field based on an STL mesh; then, it constructs a GCN model to extract features and classifies edges to identify striped edges; next, it employs a "detection-selective order-upgrading" strategy, inserting high-order nodes only on striped mesh edges to construct a high-order background mesh; finally, it uses a hybrid interpolation strategy, employing linear interpolation for non-striped mesh edges and cubic spline interpolation for high-order edges to calculate size values. This invention efficiently eliminates artifacts without changing the global topology, enabling the generation of high-quality unstructured meshes.

The utility model discloses a soil sample collection device with a water outlet structure, which relates to the technical field of soil sample collection, and comprises a threaded cylinder, and further comprises a feeding water outlet mechanism arranged on the inner wall of the threaded cylinder and used for feeding a sampled soil sample into a collection container and precipitating the soil sample in the collection container, the soil sample collecting device with the water outlet structure comprises a threaded barrel, a feeding water outlet mechanism arranged on the threaded barrel and used for discharging redundant water, and a sampling collecting assembly arranged on the inner wall of the threaded barrel and used for collecting soil samples, and the feeding water outlet mechanism comprises a threaded sleeve, the soil sample collecting device with the water outlet structure is provided with the feeding water outlet mechanism, and when the soil samples are collected, especially in a humid soil environment or a high-water-content soil environment, the soil samples can be collected conveniently. The water filtering plate and the water discharging pipe can quickly discharge redundant water, so that the soil can quickly reach a state suitable for collection and treatment, the sampling process is accelerated, the feeding assembly can quickly convey a soil sample into the collection device, and the collection speed is accelerated.

The utility model belongs to the field of building engineering technology, especially is involved in a kind of Tibetan-style building stone facade wall structure, including bluestone masonry layer, several parallel arrangement structural boards are embedded in bluestone masonry layer, the inner wall of bluestone masonry layer is equipped with waterproof layer, leveling layer, thermal insulation layer, smoothening layer and steel wire mesh in proper order;It further includes the horizontal tie bar of pre-buried setting along bluestone masonry layer height direction, the outer end of horizontal tie bar is screw-threaded connection has fastening cylinder, and fastening cylinder is fixedly connected with thermal insulation layer and steel wire mesh and horizontal tie bar;Bluestone masonry layer outer surface is shrunk inward according to 5% collection rate from below to above, and structural board includes T type head embedded in bluestone masonry layer and long board section located in inside, the utility model provides reliable structure support by T type structural board embedded design and horizontal tie bar anchoring system, and multi-layer composite structure has excellent thermal insulation and waterproof performance, and bluestone staggered masonry keeps traditional style of Tibetan-style building, and the structure safety level of Tibetan-style building is improved.

This invention discloses a method for preparing and applying a high-bird-drop-resistant clear coat for automobiles, belonging to the field of automotive coating technology. This invention constructs a special ternary crosslinking network of "acrylic resin-amino resin-blocked isocyanate" and introduces a functional resin containing urethane bonds (-NH-CO-O-) as an acid-resistant modifying component to prepare a high-performance single-component solvent-based clear coat. The method first constructs a basic crosslinking system through the pre-dispersion of multiple resins, then uses leveling agents, drying agents, and other additives for synergistic compounding and regulation, finally obtaining the finished product. The clear coat of this invention utilizes the high chemical inertness of urethane bonds to significantly improve the paint film's resistance to acidic substances in bird droppings, achieving a bird dropping resistance rating of Rbd2 or higher, while maintaining the ease of application of a single-component system.

Provided is a sulfide-based inorganic solid electrolyte material where a particle size d50 at which a cumulative frequency in a volume-based cumulative frequency distribution curve measured using a laser diffraction scattering particle size distribution analyzer is 50% is 0.1 um or more and 100 um or less, in which an attachment area measured using the following (method) is 10% or less. (Method) (1) An 8 cm long × 9 cm wide SUS304 plate where, when measured according to JIS B 0601 (2013), an arithmetic mean roughness Ra is 0.017 um or more and 0.023 um or less, a maximum height Rz is 0.14 um or more and 0.18 µm or less, and a ten-point average roughness Rzjis is 0.12 um or more and 0.16 um or less is provided such that a vertical side as a tangent line to a horizontal plane is inclined by 45° with respect to the horizontal plane. (2) Using a sieve having a mesh size of 250 um, 10 g of a sulfide-based inorganic solid electrolyte material is screened out to the SUS304 plate from a height of 10 cm from the horizontal plane such that the sulfide-based inorganic solid electrolyte material is applied to the entire SUS304 plate. (3) 47 g of one zirconia ball is dropped three times from a height of 5 cm from an upper end of the SUS304 plate to impact only the upper end of the SUS304 plate without impacting a surface of the SUS304 plate to which the sulfide-based inorganic solid electrolyte material is attached. (4) An area of the impacted surface of the SUS304 plate to which the sulfide-based inorganic solid electrolyte material is attached is measured, and a ratio (attachment area) of the measured area to an area of a single surface of the SUS304 plate is calculated.

This utility model discloses a passive signal filter for processing fire signal transmission in shielded rooms, belonging to the field of electromagnetic shielding technology. It includes paths A-A′ and B-B′; both paths A-A′ and B-B′ are equipped with cascaded common-mode suppression modules and differential-mode suppression modules. The common-mode suppression module consists of two common-mode chokes L1 and two feedthrough capacitors C1, while the differential-mode suppression module is a π-type low-pass filter structure composed of a differential-mode inductor L2 and a feedthrough capacitor C2. Through this method, this utility model possesses high reliability and safety, high signal fidelity, excellent electromagnetic compatibility, and high integration.

The present invention addresses the problem of providing a laminated film that has further uniform properties regarding optical characteristics and the like, and that can maintain said properties for a further extended period of time. This laminated film is characterized by comprising two or more different types of thermoplastic resin layers and is characterized in that, when ratios of interface layer thicknesses analyzed through GCIB-TOF-SIMS with respect to the film thickness are calculated in all types of interfaces formed by the different thermoplastic resin layers, the lowest value thereof is 1.0×10-4-1.0×10-2.

The application relates to a preparation method and application of a humic acid-loaded biochar material for activating persulfate to degrade polycyclic aromatic hydrocarbons, and relates to the technical field of polycyclic aromatic hydrocarbon pollution remediation. The preparation method of the humic acid-loaded biochar is as follows: biochar prepared is mixed with humic acid of a certain concentration, centrifugal freezing drying is carried out after reaction for a certain time, and thus the humic acid-loaded biochar is obtained. The prepared remediation agent maintains the porous characteristics of the biochar, and the activation performance of persulfate is significantly enhanced, polycyclic aromatic hydrocarbon remediation can be realized through adsorption and degradation, and the edible amount of persulfate is greatly reduced. The remediation effect of the humic acid-loaded biochar on polycyclic aromatic hydrocarbons in water bodies and soil is significantly better than that of biochar and humic acid used alone, and after actual polycyclic aromatic hydrocarbon pollution remediation verification, very significant effects are obtained. Meanwhile, the material preparation cost is low, the method is simple, the raw materials are safe, the material has no harmful effect on the environment, and the material is suitable for large-scale popularization and application.

The utility model discloses a rotatable surgical device, include: operation platform is provided with through -hole, and through -hole is used for the operation instrument of wearing, locking piece is used for fixed installation in the sheath pipe of human body part, rotating component, including upper rotary ring and lower rotary ring, upper rotary ring sets up at the bottom of operation platform, and lower rotary ring sets up at the top of locking piece, wherein, the relative rotation connection of operation platform and locking piece is realized through rotating component. Can simplify the difficulty of operation operation, improved the applicability of the device in clinic.

The application discloses a kind of ceiling systems using magnetic attraction to combine accessory structure, belong to ceiling assembly technical field, including keel main bone, the threaded spindle of keel main bone is equipped with, the lower end of keel main bone is evenly provided with clamping groove, the lower end of clamping groove is clamped with card type auxiliary bone, the lower end of card type auxiliary bone is fixed with magnetic attraction piece, the inside fixed connection of magnetic attraction piece is with self-tapping screw, the lower end of self-tapping screw is threadedly connected with ceiling panel, the upper end of ceiling panel is provided with sound insulation layer, the lower end of sound insulation layer is provided with first SPC surface bottom layer, the lower end of first SPC surface bottom layer is provided with honeycomb aluminum resin, the lower end of honeycomb aluminum resin is provided with second SPC surface bottom layer, by magnetic attraction piece, the assembly is more convenient when installing ceiling panel, does not need to be fixed by multiple bolts, simultaneously, the integrity of ceiling panel will not be damaged due to the existence of bolt, as far as possible the original characteristic is maintained, guarantee the use effect.

The application belongs to the technical field of magnetoencephalography signal processing, and discloses a magnetoencephalography signal processing method and system based on an iterative signal space separation, which comprises the following steps: acquiring multi-channel magnetoencephalography signals collected by a magnetoencephalography instrument; constructing a spatial separation system matrix based on the spatial position and sensitive direction of a magnetoencephalography sensor, and setting algorithm-related parameters; grouping internal spatial base vectors based on the spatial separation system matrix, and calculating a static magnetic pole moment round by round by using residual signals to obtain updated internal expansion coefficients and external expansion coefficients; performing screening, elimination or weight reduction regularization on a spatial base matrix based on the effective signal energy, noise propagation strength, signal-to-noise ratio and information quantity contribution of a spatial base component to obtain a regularized internal spatial base matrix and internal expansion coefficient; and reconstructing to obtain a noise-reduced magnetoencephalography signal based on the regularized internal spatial base matrix and internal expansion coefficient.

The utility model relates to the technical field of offshore photovoltaic panel connection cables, and discloses a special cable for offshore photovoltaic panel connection, which comprises a cable sheath, the cable sheath comprises a corrosion-resistant coating, a corrosion-resistant layer and a main body layer, and the corrosion-resistant coating is positioned on the outer surface of the corrosion-resistant layer. According to the utility model, the cable sheath can be fixed and limited through the arrangement of the fixing assembly, the cable sheath is composed of the corrosion-resistant coating, the corrosion-resistant layer and the main body layer, the strength of the cable sheath is ensured, the corrosion-resistant layer has good corrosion resistance and can resist seawater corrosion, the corrosion-resistant coating increases the corrosion resistance of the outside of the corrosion-resistant layer, and the service life of the cable sheath is prolonged. The main body layer ensures the characteristics of the cable sheath, the shielding layer, the loose tube and the heat-resistant layer are adopted to form the cable core protective sheath, the shielding property and the heat insulation property of the cable core protective sheath are ensured, certain pulling resistance is increased, and the pulling resistance core and the pulling resistance net are adopted to form the pulling resistance wire, so that the pulling resistance of the pulling resistance wire is greatly improved.

The invention belongs to the technical field of polymer composite materials, and particularly relates to a nylon modified composite material and a preparation method thereof.The method comprises the steps that firstly, high-viscosity nylon resin, a foaming agent and a cross-linking agent are mixed to obtain a high-viscosity sheet, and low-viscosity nylon resin, a semicarbazide high-temperature foaming agent and a cross-linking agent are mixed to obtain a low-viscosity sheet; the preparation method comprises the following steps: crushing a high-viscosity sheet and a low-viscosity sheet into high-viscosity powder and low-viscosity powder, and mixing the obtained powder with a nylon resin base material according to a required ratio to obtain the nylon modified composite material. The nylon modified composite material has both the caching effect and the mechanical property, and the obtained nylon modified composite material still keeps the characteristics of a thermoplastic material and can be recycled.

The invention provides a ship radiation noise data augmentation method based on spectrum reconstruction, a medium and a system, and belongs to the technical field of ship radiation noise processing. After a continuous spectrum and a line spectrum are separated through smooth filtering, a continuous spectrum segmentation parameter, a line spectrum frequency amplitude parameter and a modulation spectrum fundamental frequency parameter are extracted; constructing a continuous spectrum reconstruction game model and a line spectrum detection game model to respectively optimize a filter coefficient and a detection threshold, solving the filter coefficient based on the continuous spectrum reconstruction game model by adopting a variable step size normalized adaptive iterative algorithm, and generating a continuous spectrum reconstruction time domain signal; a line spectrum effective frequency set is determined by adopting a constant false alarm rate adaptive detection algorithm based on a line spectrum detection game model, then a line spectrum reconstruction time domain signal is generated, a modulation pulse sequence is constructed according to the main shaft frequency and the blade number to generate a modulation spectrum reconstruction time domain signal, and the technical problem that the number of ship radiation noise samples is insufficient is solved.

The application provides a kind of festuca ovina mature seed callus induction medium, induction method and the method for establishing regeneration system, belong to plant tissue culture technical field.The application provides a kind of callus induction medium, with MS medium as base medium, further include the following components with the following content: 2, 4-dichlorophenoxyacetic acid 4~6 mg / L, hydrolyzed casein 40~60 mg / L, abscisic acid 1~3 mg / L and kinetin 0.04~0.07 mg / L.The callus induction medium described in the application can efficiently induce mature seeds to form callus, and the induction rate of callus is more than 81%.The application selects festuca ovina mature seeds as explants for callus induction culture, which is convenient and low in cost, and lays a foundation for the research of festuca ovina gene editing.