157results about How to "Optimize spatial structure" patented technology

The invention discloses a method for transplanting trees with whole canopy, which comprises the following steps: a, determining the size of mud balls and cutting roots; b, pruning; c, digging out themud balls and packaging; d, preparing a plant pit; e, planting; and f, maintaining. The invention aims to overcome the defects in the prior art to provide the method for transplanting the trees with whole canopy, which is scientific, reasonably, mature, orderly, and capable of improving the survival rate of the transplanted trees. The method for transplanting the trees with whole canopy has the survival rate of the trees of above 85 percent, ensures that the transplanted trees have good visual effect, and simultaneously achieves good economic and ecological benefits.

The invention discloses a preparation method of bacterial cellulose based carbon nanofibers and relates to a preparation technology of a carbon fiber material. The preparation method comprises the following steps: carrying out purification treatment on bacterial cellulose obtained by bacterial fermentation and carrying out freeze drying, carrying out carbonization treatment by putting the dried bacterial cellulose material into an atmosphere furnace and heating to 600-1200 DEG C, further heating the processed material to graphitize the material, and cooling to obtain the bacterial cellulose based carbon nanofiber material having a three-dimensional net structure. The preparation technology is simple and easy to carry out, is convenient to operate and has low cost. The obtained bacterial cellulose based carbon nanofiber has a good spatial net structure, has excellent mechanical property, thermal stability and conductivity, and can be applied in fields of electron devices, special composite materials, high efficient catalytic materials, biological materials and the like.

The invention provides a toxin adsorption antidote capable of eliminating harm done by mycotoxins to livestock. The toxin adsorption antidote is prepared from 45-55% of modified attapulgite, 20-28% of modified montmorillonite, 5-10% of lignocelluloses, 5-15% of yeast cell walls, 1-2% of multi-vitamin micro-mineralization nutritious supplementary and 3-5% of functional extract superpacket. The toxin adsorption antidote can adsorb common mycotoxins, including aflatoxin, zearalenone, vomitoxin, ochratoxin and fumonisins, in feed so as to reduce the harm done by mycotoxins to animals; meanwhile, adsorption detoxication function is realized through nutrition enhancement and immunity improvement of livestock, and livestock breeding effect is improved.

The invention belongs to the technical field of biosensors, and in particular discloses an electrochemical sensor based on a metal organic framework-vertical graphene composite structure and a preparation method thereof. The preparation method specifically comprises the following steps: (1) growing vertical graphene on a stainless steel substrate; (2) synthesizing various different metal organic framework (MOF for short) materials such as ZIF-8, KAUST-1 and Ni-MIL-77 by taking the vertical graphene on the stainless steel substrate as a template; and (4) constructing the electrochemical sensorby taking the MOF-vertical graphene composite nanostructure as an electrode material. The electrochemical sensor has higher electric conductivity, larger specific surface area and more types of responsive substance surfaces, and the preparation method is relatively clear, different MOFs can be made by selecting materials according to performance of chemical reactions directly, and the spatial structure of the MOF material can be altered according to performance demand, so that the electrochemical sensor which further meets the demand can be manufactured more easily, and is wide in applicationrange.

The invention provides an electric vehicle wireless charging system. The electric vehicle wireless charging system comprises an electrical energy conversion emitting device and an electrical energy conversion receiving device, wherein the electrical energy conversion emitting device comprises a high-frequency inverter and a compensation capacitor which are respectively connected with the two ends of an emitting coil, and the high-frequency inverter is connected with the compensation capacitor; the electrical energy conversion receiving device comprises a compensation capacitor and an AC / DC conversion device, the compensation capacitor is connected with the two ends of a receiving coil, and the AC / DC conversion device is connected with the two ends of a load coil. Compared with the prior art, the electric vehicle wireless charging system not only resolves the problem that a battery of an electric vehicle is low in energy density, but also can reflect interaction between the electric vehicle and a power grid during charging better, and weaken influence on the power grid caused by charging of the electric vehicle.

The invention discloses a method for preparing a bacterial cellulose compounded amnion extracellular matrix material containing collagen, and relates to a preparation technology of tissue engineering biomaterials. The method comprises the following steps: activating a strain capable of secreting bacterial cellulose to prepare a seed mash; mixing the seed mash with strain concentration of 30-50wt% and a culture medium containing a collagen solution, and putting the mixture into a culture container to stand and culture to obtain a bacterial cellulose / collagen film; immersing an amnion extracellular matrix film in the culture medium, laying the amnion extracellular matrix film on the surface of the bacterial cellulose / collagen film after the amnion extracellular matrix film is completely wet; further standing and culturing for 1-6 hours, purifying and drying to obtain the bacterial cellulose compounded amnion extracellular matrix material containing collagen. The method is simple and practical in preparation process, low in cost and wide in material sources; the prepared compound material has an excellent spatial three-dimensional network, good biocompatibility and high mechanical strength, and can be used as a tissue engineering scaffold material and applied to tissue reconstruction.

The invention discloses a method for image processing based on a matrix variable variation self-encoder so that a problem of damaging the spatial structure by image vectorization processing can be solved and thus image reconstruction, denoising and completion can be realized. Different from the traditional VAE, the method has the following advantages: the input, hidden layer features, latent variable distribution parameters of the model are described by using an inherent expression form -2D matrix of the image; with the definition of matrix Gaussian distribution and related properties, an explicit expression of an objective function of a novel model is deduced and then model parameters are calculated by using a stochastic gradient descent algorithm. In the model, modeling of the spatial structure and statistical information of the image data is carried out well because the involved modeling process is oriented at the matrix variable, so that the image reconstruction quality is enhanced, noises are removed, and the image completion is realized.

The invention discloses a method for improving meat quality, comprising the following steps: (1) raw material processing: beef is used as raw material; and external fat, tendons and dirt are removed, and then the beef is trimmed and divided into regular beef blocks according to different parts; (2) pepsin tenderization: 0.6mg / g of pepsin liquor is injected to different parts of the divided beef material; the beef material is rolled and rubbed for 10 to 20 minutes; and the beef material is preserved at the temperature of 40 DEG C for 10 minutes; and (3) TG enzyme cross linking: 4.2 mL of TG enzyme liquor is drawn by an injector and injected at different parts of the meat; the add concentration of the TG enzyme is 7Mu / g; the addition amount of NaCl is 0.75 percent of the beef; and then the beef is rolled and rubbed for 10 to 20 minutes, and the beef is preserved at the temperature of 40 to 55 DEG C for 90 to 180 minutes. The method can improve the nutritional performance, the mouth feel and the appearance formability of the beef.

The invention provides a dye mesoporous adsorbent taking rice hulls as templates and silicon sources and a preparation method thereof, belonging to the technical field of fine chemical industry. The dye mesoporous adsorbent product is M-TiO2-SiO2, wherein M is Sc, or / and Vr, or / and Cd, or / and Mn, or / and Fe, or / and Co, or / and Ni, or / and Cu, or / and Zn, or / and Cr, or / and Hg, or / and Ag, or / and Au, or / and Pb. The preparation method comprises the following steps of: template pretreatment, ion exchange, sol-gel reaction and high-temperature calcination to remove the templates to obtain a mesoporous material. The rice hulls which are used as the templates have wide sources and low production cost and are environment-friendly; silicon dioxide existing in the rice hulls automatically deposits, and titanium dioxide and transition metals are doped into the material at the same time, thereby well improving the adsorption property and space structure of the material; and the obtained material has stable performance at high temperature, has simple preparation processes and mild conditions, is pollution-free, has renewable adsorptivity, and can be used for treating waste water of industrial organic dyes.

The invention discloses a heat-resistant anti-impact grinding wheel material. The heat-resistant anti-impact grinding wheel material is prepared from diamond, silicon carbide whiskers, aluminum borate whiskers, potassium titanate whiskers, aluminum oxide whiskers, yttrium oxide, cerium oxide, feldspar, fluorite, modified phenolic resin, polyurethane resin, polyethylene wax emulsion, calcium lignosulphonate, slag, glass fibers, carbon fibers, a pore forming agent and alloy powder. The heat-resistant anti-impact grinding wheel material is reasonable in composition. An obtained grinding wheel is excellent in bending strength, microhardness, impact toughness, wear resistance, heat dissipation performance and heat resistance, not likely to burst apart and high in safety coefficient and meanwhile has the beneficial effects of being high in grinding efficiency and grinding ratio, good in grinding quality, long in service life and the like. Good economic benefits are achieved.

The invention discloses a base station flow prediction method based on an echo state network. The method comprises following steps of step 1: acquiring flow data from a wired network base station, carrying out data preprocessing and generating normalized sample data; step 2: initializing states of a reservation pool through the normalized sample data and generating the reservation pool; step 3: combining the reservation pool and the normalized sample data, carrying out weight initialization, determining weight distribution intervals and training an echo state network model; and step 4: testingthe trained echo state network. The method is advantageous in that accuracy of base station flow prediction can be effectively improved; based on the uncertainty and complexity of the base station flows, by use of the echo state network, relations between base station flow data can be well excavated; and accuracy of the base station flow prediction can be improved to a certain degree.

The invention discloses an car inner space separation device. The car inner space separation device is characterized in that a retractable separation curtain is arranged in space between seats of a driver and a co-driver and back seats in a car, the function of the separation curtain is separating the space of the seats of the driver and the co-driver from the space at the back of the seats of the driver and the co-driver, and the separation curtain can be fixed on top of or at two sides inside the car. The separation curtain can fully or partially separate car inner space. In use, the separation curtain can either be fixed with the top part inside the car by a top sliding slot inside the car, or be fixed with the top part inside the car by sticking on the top part inside the car; or can be fixed with columns at two sides inside the car in different manners. The car inner space separation device is safe, reliable, and convenient for use, can improve the structure of the existing car inner space, and can realize synchronous change and regulation according to the number of people in the car as well as achieve characteristics of saving oil by saving service time of an air conditioner, thus having better practical and popularization significance.

The invention relates to the field of groundwater pollution control and remediation, and particularly relates to a permeable reactive wall material and a preparation method thereof. The permeable reactive wall material provided by the invention comprises the following components in percentage by weight: 45%-55% of iron powder, 5%-10% of zeolite and 40-50% of activated carbon, wherein the percentage sum of the components is 100%. According to the preparation method, iron powder, zeolite and activated carbon are mixed in a specific proportion, so that the comprehensive treatment efficiency of the materials on water pollutants is improved, the use amount of the reaction materials is reduced, the production and construction cost of the product is reduced, and the market competitive power is enhanced.

The invention discloses a catalyst for preparing multi-walled carbon nanotubes, and a preparation method and an application thereof. The catalyst adopts MgO as a carrier, metal Fe, Co or Ni as an active component and metal Mo as an auxiliary agent, and the chemical general formula of the catalyst can be expressed as xMa-Mob / MgO, wherein x is the molar percentage of M in MgO, M is one of Fe, Co andNi, and a:b represents a molar ratio of M to Mo. The catalyst can form a foam-like porous loose structure, and has the advantages of high loading capacity, large specific surface area and favorable activity, so a sufficient space is provided for the growth of carbon nanotubes; and the high-quality carbon nanotubes can be prepared. The catalyst has the advantages of simple preparation method, safeand feasible preparation process, good large-scale preparation activity, large specific surface area (up to 154 m<2> / g), excellent space structure and the like. The high-quality carbon nanotubes canbe prepared by using the catalyst, I_G / I_D can reach 17, the average diameter is 8.7 nm, and the carbon content of crude carbon nanotubes exceeds 92%.

The invention discloses a limit sensing method. The limit sensing method comprises steps that a first contact block and a second contact block are respectively arranged on a fixed equipment zero point portion and a mobile device; a motor used for driving the mobile device to operate is operated, and a real-time characteristic parameter of the motor is acquired; according to the real-time characteristic parameter of the motor, a locked-rotor detection method based on a characteristic parameter threshold is employed to carry out locked-rotor detection on the motor in real time; whether the real-time characteristic parameter is larger than the preset characteristic parameter threshold is monitored; whether arrival at the zero point portion is realized is determined. Compared with the prior art, the method is advantaged in that self controllable locked-rotor characteristic state of the motor is utilized, trigger type components can be saved, designing a contact type block is only required, and an industrial design space structure is optimized. The locked-rotor characteristic parameter of the motor is employed, program determination for the characteristic parameter is carried out through a control system, and zero point determination on the industrial control equipment is accomplished.

The invention discloses nano-grade temperature-resisting and salt-resisting cross-linked polymer microspheres and a preparation method thereof, and belongs to the technical field of polymer microspheres. The nano-grade temperature-resisting and salt-resisting cross-linked polymer microspheres are prepared from the following components in parts by weight: 40 to 48 parts of acrylamide, 15 to 20 parts of acrylic acid, 12 to 22 parts of 2-acryloylamino-2-sodium methyl propanesulfonate, 5 to 8 parts of a surfactant, 45 to 51 parts of white oil, 1.5 to 2.6 parts of a cross-linking agent, 0.6 to 1.2parts of zirconium nitrate, 6 to 9 parts of a heat-resisting agent, 5.6 to 8 parts of ammonium persulfate, 0.7to 1.3 parts of sulfur dioxide, 2 to 6 parts of a reinforcing agent, 2.2 to 3.4 parts of disodium ethylene diamine tetraacetate, 52 to 65 parts of distilled water and 8 to 10 parts of acetone. The nano-grade temperature-resisting and salt-resisting cross-linked polymer microspheres provided by the invention have excellent comprehensive performance, temperature resistance and salt resistance and a good blocking effect, and the recovery ratio of crude oil is improved.

The invention provides a preparation method of a novel degradable bio-based fresh-keeping logistics packaging material, belonging to the technical field of functional polymer materials. In order to improve the mechanical strength and air barrier property of a packaging film material, the preparation method takes biodegradable polylactic acid (PLA) as a base material, and can increase the toughness by adding poly (butyleneadipate-co-terephthalate) into the base material for blending; furthermore, a catechol-base modified metal organic skeleton compound which is prepared in advance is added into the mixture; the modified metal organic skeleton compound enables adjustable channels to be formed among chain molecules in a membrane, so that the aim of changing the air barrier property is achieved; the modified metal organic skeleton compound also has an enhancement effect for a polymer. The polymer film prepared by the method has good biodegradability, better air barrier property and certain strength, thus being used for the field of logistics packaging of fresh agricultural and subsidiary products.

The invention discloses a type 1 bovine viral diarrhea virus (BVDV-1) virus-like particle as well as a preparation method and application thereof. A pFBD-BVDV-1 recombinant baculovirus transfer vectoris built by cloning structural protein C, Erns, E1 and E2 coding genes of BVDV-1 to pFastBacDual; a recombinant baculovirus vector Bac-BVDV-1 is obtained through the transposition in colibacillus DH10Bac; insect cells are transfected; recombinant baculovirus Baculo-BVDV-1 is obtained; the structural protein C, Erns, E1 and E2 of the insect cells for expressing BVDV-1 are infected and are automatically assembled into BVDV-1 virus-like particles (VLP) in the cells. The obtained virus-like particle is more similar to the morphostructure of the natural BVDV virus particles; after the inoculationinto animals, the bodies can be stimulated to generate good immune reaction; a better immune effect can be reached. The obtained virus-like particle can be directly purified by using the sucrose density gradient centrifugation. Compared with other expression systems, the virus-like particle has the advantages that the complicated process of extracellular assembly after the respectively purification of the structural protein is avoided; the efficiency is favorably improved; the cost is reduced; in addition, in the production process, the infective BVDV living viruses are not needed; the safetyis improved.

The invention discloses a method for selecting secondary forest intermediate cutting object woods. The method includes the steps of in cooperation with secondary forest characteristics and operation targets, selecting quantitative indexes, such as the freedom degree, the mixture degree, the health indexes, the purpose tree species characteristic indexes, the space density indexes and the open odds, which influence the probability that the woods in a secondary forest are determined as intermediate cutting objects, solving the weights of the six quantitative indexes with an analytic hierarchy process, analyzing correlations between the indexes which serve as independent variables and the intermediate cutting indexes which serve as dependent variables according to biological significances of the indexes for building the ICIi of the woods, and enabling the ICIi of the woods to be sort in a descending mode to determine the prior intermediate cutting object woods. The method is convenient to use, easy to operate and high in efficiency, and the accuracy can meet the requirement.

The invention discloses a preparation method of a mineral element containing coated sustained-release basic fertilizer for paddy rice. According to the preparation method, an internal membrane material and an external membrane material are prepared in advance; then the internal membrane material is sprayed on the surface of a fertilizer core to carry out coating so as to obtain a material A; thenthe external membrane material is sprayed on the surface of the material A to carry out coating so as to obtain the basic fertilizer. The provided coated sustained-release basic fertilizer has the advantages that the nutrients of the coated sustained-release basic fertilizer are comprehensive, the fertilizing effect is long-lasting, the utilization rate is high, the water retention performance isgood, the sustained-release effect of inorganic nutrients is good, moreover, the damage of the basic fertilizer to the soil environment is small, the paddy rice yield is high, and the paddy rice quality is good.

The invention discloses a Parkinson's hand motion quantitative analysis method and system based on a depth image, and belongs to the field of computer vision and machine learning. The method comprisesthe steps that a detected person makes a hand action according to the requirements of a Parkinson's disease evaluation table, multiple frames of depth images of the detected person are acquired in the period, and 3D coordinates of the hand centroid in each frame of depth image are recognized; according to the 3D coordinates of the hand centroid, hand point cloud and noise point cloud segmentationis carried out on each frame of depth image; predicting 3D coordinates of each hand joint point in each frame of depth image based on the hand point cloud in the single frame of depth image; integrally optimizing the 3D coordinates of all the hand joint points of all the frames according to the time sequence information between the continuous frames and the priori knowledge of the hand postures;according to the optimized articulation point 3D coordinates, hand motion features are extracted; and utilizing the trained XGBoost classifier to classify the extracted hand motion features, and giving a corresponding scoring result.

The invention relates to a biological fermentation preparation method for flavored pigskin. The biological fermentation preparation method comprises the following steps: sterilizing a byproduct, namely pigskin of the pork industry, then performing micro-point roughening treatment of mixed protease on the surface of the pigskin, adding a carbon source and a nitrogen source required by fermentation,inoculating mucor racemosus XH-22, bacillus subtilis and aspergillus oryzae, and performing mixed solid-state fermentation, after surface hyphae are removed, inoculating yeast, the mucor racemosus XH-22 and the aspergillus oryzae, carrying out compensation fermentation on the pigskin, and subjecting a fermentation product to flavoring, drying and dehydration so as to obtain a product, namely fermented flavored pigskin. The flavored fermented pigskin produced by using the method provided by the invention has the following advantages: the production process is environmentally-friendly, simple,convenient, economical and practical; the difficulties of a conventional method in industrial production is overcome; meanwhile, the deficiencies of a conventional product in the aspects of nutritionand flavor can be made up; excellent flavor is guaranteed; and high-quality collagen is taken as a source of healthy energy at the same time.

The invention provides an integrated particle fluidized carbon dioxide capture method and device for a power plant. The method comprises the following steps: enabling flue gas to pass through an adsorption tower of the integrated particle fluidized carbon dioxide capture device from bottom to top, and efficiently absorbing carbon dioxide from porous silicon particles in the tower; enabling the particles to enter a desorption column after absorption completion, performing heated desorption under heating of a heat exchanger, and collecting the obtained carbon dioxide by a carbon dioxide collection pipe; and cooling the desorbed particles in a particle cooling area, and leading out partial treated flue gas, blowing the cooled particles into the desorption column via a particle inlet so as to enter the next cycle. The method has the advantages of being scientific, reasonable, high in applicability, capable of realizing large-scale application, stable and reliable in operation, high-efficiency, energy-saving, low in operation and maintenance cost, and the like.

The invention discloses a microporous composite biological ceramic bone repair scaffold and a preparation method and device thereof. The repair scaffold comprises a repair scaffold body made of a composite material, the repair scaffold body comprises a plurality of scaffold layers which are overlapped, a plurality of micron-sized micropores are formed in each scaffold layer, and a plurality of micropores among the layers form a plurality of polyhedrons. The composite material comprises the following components in percentage by weight: 1%-5% of graphene, 50%-60% of zirconium oxide and 20%-40% of hydroxyapatite and beta-tricalcium phosphate. The polyhedrons are connected by the micropores, the conductivity and the high toughness of the graphene are utilized, the high strength and the wear resistance of the zirconium oxide are utilized, and the good bone induction activity of the hydroxyapatite and beta-tricalcium phosphate is utilized, so that the physical properties such as compressivestrength, elastic modulus, fracture toughness and other indexes of the new material are close to natural bone tissue, the new material can bear the large stress deformation without fracture, the wearcondition between the material and the adjacent tissue is reduced, and the new material has high osteogenesis induction activity at the same time.

The invention discloses a heat conduction interface material and a preparation method thereof. The preparation method comprises the following steps: (1) dispersion and vacuumizing: adding liquid silica gel, a coupling agent, heat conduction powder, a flame retardant, an inhibitor and a platinum catalyst into dispersion equipment, carrying out dispersion and vacuumizing, and carrying out uniform dispersion, so as to obtain a heat conduction mixture; (2) calendering solidification: respectively extruding the heat conduction mixture to two surfaces of glass fiber cloth by virtue of calendering equipment so as to form a heat conduction layer, dragging the heat conduction layer into a drying oven through a release film, and carrying out solidification; and (3) gum film lamination: uniformly coating the surface of the solidified heat conduction layer with heat conduction glue, so as to form an adhesive layer, and laminating the adhesive layer with the release film, so as to obtain the heat conduction interface material. The heat conduction interface material provided by the invention has high viscosity and strength and an excellent heat conduction effect.

The invention discloses slow-release fertilizer capable of improving the stress resistance of pot flowers. The slow-release fertilizer consists of fertilizer matrix granules and films, wherein the outer surfaces of the fertilizer matrix granules are coated with the films; and the fertilizer matrix granules comprise the following raw materials: composted straws, rapeseed dregs, cottonseed meal, peat, bamboo charcoal powder, polypeptide urea, monopotassium phosphate, potassium sulfate, potassium mineral powder, a microbial agent, modified attapulgite, vermiculite powder, marine oligosaccharide,paclobutrazol and cycocel. According to the low-release fertilizer capable of improving the stress resistance of the pot flowers, the fertilizer matrix granules and the films are cooperated, the nutrition is matched reasonably, the fertilizer efficiency is durable, the slow-release effect is good, the physical and chemical properties of soil in the pot flowers are effectively improved, damage to the pot flowers by the plant diseases and insect pests is avoided, the stress resistance of the pot flowers is effectively enhanced and the quality of the pot flowers is obviously improved.

The invention discloses a fast combination locking-type scaffold system. The fast combination locking-type scaffold system is mainly composed of structural parts and partial accessories such as vertical rods, horizontal rods and inclined rods. The vertical rods are provided with a multi-hole connecting disk and a connecting locking and docking system so as to be assembled with the matching horizontal rods, the inclined rods, and the like into a construction structure which is stable in structure and can meet various load requirements; and the existence structures of the basic elements are interrelated and interdependent, all the structural parts adopt standard parts series, scale production can be achieved, and safety, reliability, efficiency and practicality are achieved really.

The invention relates to a dinitrobenzene formacyl imdo group acenaphthene derivatization compound that has the structure of general expression (I). And R1 represents hydrogen, C1-C3 is alkyl, R2 is alkylidene group, alkenyl, and R3 expresses one-hydrogen or two-hydrogen. After taking acylation reaction of arene, alpha-H replacing reaction of ketone, and reduction amination of ketone carbonyl, and acylation reaction of amine acyl halide, the product would be gained. The invention also relates to the single antipode of the compound, including chiral reagent or chiral additive. It could be used as chiral reagent in film method and chiral stationary phase or chiral mobile phase.

The invention discloses a long-focal-length large-view-field miniaturized active athermalization optical system which comprises a Cassegrain reflection primary mirror, a reflection secondary mirror, a field lens, a collimating mirror, a first folding mirror, a second folding mirror, a first imaging mirror group, a third folding mirror, a second imaging mirror group, a fourth folding mirror, an imaging lens and a detector focal plane. The Cassegrain reflection primary mirror and the reflection secondary mirror form a Cassegrain imaging system, the field lens is arranged between the Cassegrain reflection primary mirror and the reflection secondary mirror, and the field lens is used for compressing the field angle of the collimating mirror and correcting the field curvature of the imaging system; and the collimating lens, the first folding lens, the second folding lens, the first imaging lens group, the third folding lens, the second imaging lens group, the fourth folding lens, the imaging lens and the detector focal plane are sequentially connected through light paths. The system can work in a wide temperature range, the cost of the system is reduced, meanwhile, the space structure of the system is optimized through the turning mirror, and miniaturization is achieved.

The invention discloses a method for preparing a bacterial cellulose compounded amnion extracellular matrix material containing collagen, and relates to a preparation technology of tissue engineering biomaterials. The method comprises the following steps: activating a strain capable of secreting bacterial cellulose to prepare a seed mash; mixing the seed mash with strain concentration of 30-50wt% and a culture medium containing a collagen solution, and putting the mixture into a culture container to stand and culture to obtain a bacterial cellulose / collagen film; immersing an amnion extracellular matrix film in the culture medium, laying the amnion extracellular matrix film on the surface of the bacterial cellulose / collagen film after the amnion extracellular matrix film is completely wet; further standing and culturing for 1-6 hours, purifying and drying to obtain the bacterial cellulose compounded amnion extracellular matrix material containing collagen. The method is simple and practical in preparation process, low in cost and wide in material sources; the prepared compound material has an excellent spatial three-dimensional network, good biocompatibility and high mechanical strength, and can be used as a tissue engineering scaffold material and applied to tissue reconstruction.