166results about How to "Reduce environmental problems" patented technology

The invention discloses a deep reinforcement learning quadruped robot motion control method and system based on constraint rewards. The method comprises the following steps: establishing a simulation training environment of quadruped robot deep reinforcement learning; determining a reward function, a domain randomization parameter and a cost constraint function of the simulation training environment; based on the robot information and the first simulation environment information, training the initial strategy network model through a reward function and a cost constraint function in a simulation training environment to obtain a trained strategy network model; establishing a reasoning test environment, and deploying the trained strategy network model to the reasoning test environment for model reasoning test optimization to obtain a target strategy network model; and deploying the target strategy network model into the quadruped robot to perform motion control on the quadruped robot. According to the method, the difference between a simulation training environment and a real environment is reduced, so that the quadruped robot is stably controlled by the target strategy network model in the real environment.

The invention discloses a PCB (printed circuit board) hard board drilling process method, which is characterized in that two lasers with different wavelengths are used for processing a PCB hard board blind hole, one light source adopts picosecond ultraviolet laser, and the other light source adopts CO2 laser; according to the method, by means of the characteristics that picosecond ultraviolet laser has high absorptivity and small focusing light spots on metal materials such as bright copper, high-precision, high-quality and low-heat-influence windowing operation is carried out on the surface of the bright copper, and small blind holes smaller than micrometers are formed; by utilizing the characteristics that CO2 laser has high absorptivity and large focusing light spots on non-metallic materials such as glass fibers, high-efficiency, high-reliability and no-damage bottom copper degumming operation is carried out in a round window after windowing, and a deep blind hole with the depth larger than 0.5 mm is realized.

The invention discloses a landfill vertical anti-seepage facility management method and system based on digital twinning, and relates to the technical field of environmental governance, and the method comprises the steps: building a landfill digital twinning model based on geological exploration data, and carrying out the parametric modeling of a vertical curtain anti-seepage layer; synchronizing real-time data and the digital twinborn model; processing the monitoring data in combination with a machine learning algorithm model; and remote monitoring and operation of the landfill are realized by combining a cloud platform and a remote sensor. According to the landfill vertical anti-seepage facility management method based on digital twinning, the digital twinning model of the landfill is constructed based on geological exploration data, the reliability and durability of the landfill anti-seepage facility are effectively improved, the remote supervision and risk assessment model is constructed on the cloud platform, the environmental risk is reduced to the maximum extent, and the safety of the landfill is improved. The method has better effects in the aspects of reliability, durability, long-term operation cost and safety of the landfill anti-seepage facility.

The invention relates to the technical field of waste rubber recovery, in particular to a method for preparing a rubber compound by recycling waste rubber and the prepared rubber compound. The high-shear mechanical desulfurization technology is combined, the desulfurization efficiency is further improved through the synergistic effect of various components in the compound auxiliary, and meanwhile the plasticity of the waste rubber and the compatibility of the waste rubber and new rubber are enhanced. The method not only can effectively destroy the cross-linked structure of the waste rubber, but also can be used for preparing a high-performance rubber compound product by mixing the waste rubber with a new rubber material through a subsequent mixing process, and is widely applied to manufacturing high-strength and wear-resistant rubber products, such as solid tires and the like.

The invention discloses a composite reinforcement type suction barrel device based on microorganism induction and a use method thereof. The composite reinforcement type suction barrel device based on microorganism induction comprises a suction barrel model system, a microorganism cement reinforcement system and a test monitoring system. The suction cylinder model system comprises a suction cylinder, a grouting pipeline and hydraulic equipment, and the grouting pipeline is laid on the inner wall of the suction cylinder and used for injecting microorganism cement grout; the hydraulic equipment is connected to the suction barrel and used for controlling lifting and pressing-in of the suction barrel. The microbial cement reinforcement system comprises liquid storage equipment and negative pressure equipment, and the liquid storage equipment is connected to the grouting pipeline and used for storing and providing microbial cement grout for the grouting pipeline; the negative pressure equipment is connected to the suction barrel and used for applying negative pressure to the interior of the suction barrel in the grouting process, and permeation of microorganism cement grout is promoted. The test monitoring system is used for testing mechanical parameters of a soil body, monitoring the suction barrel and carrying out a loading test on the suction barrel.

The invention provides concrete for an underground structure. The concrete is prepared from the following raw materials in parts by weight: 15-18 parts of cement, 3-5 parts of plant residue charcoal, 45-50 parts of fine aggregate, 50-55 parts of coarse aggregate, 8-10 parts of fly ash, 0.2-0.4 part of biogel, 1-2 parts of micron-sized calcium carbonate, 0.3-0.6 part of a water reducing agent and 10-15 parts of water. The invention further provides a preparation method of the concrete for the underground structure. According to the concrete for the underground structure, the segregation resistance and the crack resistance can be remarkably improved under the high free inclination and falling condition, and meanwhile the environment-friendly requirement of green buildings is met.

The invention belongs to but not limited to the technical field of electrode materials, and particularly relates to a preparation method of a bamboo-based hard carbon sodium battery negative electrode material, which comprises the following specific steps: S1, cleaning and drying natural bamboo, scraping surface bamboo green with a knife, and cutting into small blocks; s2, a dilute acid solution is prepared, the bamboos are soaked in the dilute acid solution in a vacuum mode, then the bamboos and the dilute acid solution are transferred into a hydrothermal kettle together, a solvothermal acidolysis reaction is conducted under the high-temperature and high-pressure condition, ash removal and impurity removal are conducted, and meanwhile the bamboos are softened; s3, the bamboo wood subjected to solvothermal acidolysis is washed with water and dried, and a tubular furnace is used for pre-carbonization treatment; after pre-carbonization, a sample is subjected to ball milling, grinding and screening, then is transferred into a graphite mold, and is put into a discharge plasma sintering furnace for high-temperature sintering carbonization; and S4, carrying out ultrasonic oscillation on the carbon powder subjected to discharge plasma treatment, re-screening, and carrying out chemical vapor deposition carbon coating to obtain the bamboo-based hard carbon sodium battery negative electrode material.

The invention provides a tissue culture bottle interior washing control method and device and a readable storage medium. The device comprises an input track, a photoelectric sensor, a bottle shifting mechanism, a turnover mechanism and the like. The input track guides bottles into the turnover mechanism, the bottle shifting mechanism drives the bottles according to the design, a plurality of cleaning tracks are arranged on the circumference of the turnover mechanism for switching operation, a nozzle of the water injection mechanism and a water level sensor are accurately matched for water injection monitoring, and efficient cleaning of the tissue culture bottles is cooperatively achieved. According to the control method, through multiple processes of detection starting, feeding, water injection, stirring and spin-drying, station switching, secondary water injection and circulating propelling, all links are intelligently regulated and controlled according to feedback of the sensors, and the bottle cleaning quality and efficiency are guaranteed. The electronic device runs a memory program through the processor, the storage medium stores program codes, a carrier is provided for implementation of the control method, tissue culture bottle cleaning automation and intellectualization are promoted, the industrial clean production level is improved, cost is reduced, efficiency is improved, and remarkable practical value and wide application prospects are achieved.

The invention relates to a rare earth element doped multiphase continuous silicon carbide ceramic fiber and a preparation method thereof.The preparation method comprises the steps of ceramic precursor preparation, melt spinning, air crosslinking, pyrolysis inorganic treatment and high-temperature ceramization. In the preparation method, heterogeneous metal elements, rare earth elements and boron elements are introduced through precursor synthesis; by combining air crosslinking, the sintering performance in the fiber is improved, the content of free carbon in the fiber is reduced, and the grain boundary composition and structure of the silicon carbide ceramic fiber are optimized. The prepared rare earth doped metal boride-containing multiphase silicon carbide ceramic fiber has excellent mechanical properties, high temperature resistance and oxidation resistance.

The invention relates to a thin film thickness measuring device, an excitation signal frequency determining method thereof and terminal equipment, and the device comprises a housing which comprises an opening; the test coil circuit comprises a test coil and a first transmission line connected between the test coil and the signal processing circuit, and the test coil is close to the opening so as to generate a test alternating magnetic field penetrating through the opening and output a test signal; the reference coil circuit comprises a reference coil and a second transmission line connected between the reference coil and the signal processing circuit, and the reference coil is far away from the opening so as to generate a reference alternating magnetic field which cannot pass through the opening and output a reference signal; the amplifying circuit is used for performing differential operation on the test signal and the reference signal to obtain a differential signal, and performing phase-locked filtering processing on the differential signal based on the frequency of the excitation signal to obtain a phase-locked signal; and the signal processing circuit is used for generating an excitation signal with a set frequency and outputting a test signal according to the phase-locked signal. The method has the advantage of high film thickness accuracy.

The invention relates to a model construction method, system and device for flood forecasting of a small water conservancy facility, and the method comprises the steps: obtaining original water conservancy data of a target drainage basin of the small water conservancy facility, and carrying out the analysis of the drainage basin, and obtaining the corresponding hydrometeorological data; obtaining geographic data, and carrying out feature parameter analysis to obtain a corresponding drainage basin feature parameter set; acquiring facility information, and performing parameter setting on a preset WRF-Hydro model in combination with the drainage basin feature parameter set to obtain an initial flood model; performing multi-target parameter calibration processing on the initial flood model according to the hydro-meteorological data to obtain a flood forecasting model; performing scene simulation on the flood forecasting model to obtain a scene simulation result; and optimizing the flood forecasting model according to the model optimization parameters to obtain an optimized flood forecasting model. According to the method, the flood forecasting precision can be improved, and a more reliable basis is provided for disaster prevention and reduction.

The invention relates to a nano-pesticide with photolysis resistance based on enzymatic hydrolysis lignin and a preparation method, and belongs to the technical field of nano-pesticides. The nano-pesticide is a black sphere, the effective particle size is 160-200 nm, the drug loading rate is 35.72%, the nano-pesticide has good photolysis resistance, and the photolysis half-life period is prolonged by 1.56 times compared with that of prothioconazole original drug; the composition is used for rice blast diseases. According to the nano pesticide, enzymatic hydrolysis lignin is used as a carrier, a prothioconazole bactericide is used as a loading drug, and tannic acid and copper ion coatings are used for coating; functional groups such as phenol and ketone in the enzymatic hydrolysis lignin can effectively absorb a large range of ultraviolet rays and reduce ultraviolet radiation, so that the enzymatic hydrolysis lignin has excellent oxidation resistance and ultraviolet resistance; meanwhile, the enzymatic hydrolysis lignin has renewability, environmental protection property and degradability, and the coating of tannic acid and copper ions can further improve the antifungal ability of the nano pesticide, improve the thermal stability of the nano pesticide, increase the release rate of the pesticide and have the ability to reduce the loss of the pesticide.

The invention belongs to the field of gas technical purification, and particularly relates to a honeycomb-shaped high-concentration NO2 adsorption trapping material as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing adsorbent slurry by taking high-silicon molecular sieve raw powder as a raw material; (2) putting a honeycomb carrier into the adsorbent slurry for dipping and coating; and (3) naturally airing, drying and roasting the impregnated carrier to obtain the integral honeycomb-shaped high-concentration NO2 adsorbing and trapping material. On the basis of the honeycomb-shaped high-concentration NO2 adsorption trapping material (the molecular sieve silica-alumina ratio is 1000-5000), NO2 is efficiently trapped through a pressure swing adsorption technology, meanwhile, the adsorbent subjected to adsorption saturation is reversibly regenerated, high-concentration NO2 desorbed gas is obtained, NO2 recycling is achieved, NOx tail gas of a nuclear industry post-treatment plant is recycled, and the purpose of recycling the NOx tail gas of the nuclear industry post-treatment plant is achieved. A stable NO2 gas source is provided for a spent fuel post-treatment main process, the dual requirements of NO2 raw material preparation and tail gas denitration of a post-treatment plant are met, and purification and recycling of NO2 are achieved.

The invention discloses a probiotic / mucoprotein loaded oral microsphere system as well as a preparation method and application thereof, and belongs to the field of compositions. The preparation method of the system comprises the following steps: dissolving probiotics, Mucin and HAMA in double distilled water containing phenyl lithium phosphate LAP and calcium chloride to prepare a gel matrix solution; adding the dissolved gel matrix liquid into an oil phase solvent, and stirring at a high speed in a container; after uniformly stirring, carrying out an ultraviolet light crosslinking reaction, and after the reaction is finished, fully cleaning the obtained microspheres to remove the redundant oil phase solution, so as to obtain microspheres; and dispersing the obtained microspheres in a sodium alginate solution under an acidic condition, uniformly mixing, carrying out a cross-linking reaction, and filtering and cleaning after the reaction is finished, so as to obtain the probiotic / mucoprotein loaded oral microspheres. According to the invention, HAMA and SA are utilized to prepare an oral microsphere system resistant to gastric acid to co-deliver Mucin and EcN, so as to realize continuous and effective regulation and control of unbalanced intestinal flora by probiotics.

The invention relates to the field of oil pipe leakage detection, and discloses a vertical oil pipe leakage identification method and system based on principal component analysis and a support vector machine, a medium and equipment, and the method comprises the steps: collecting a sound propagation time signal in a vertical oil pipe as a to-be-detected signal; the method comprises the following steps: preprocessing a to-be-detected signal, performing data dimension reduction through principal component analysis to extract corresponding time domain features, and constructing a feature matrix by the extracted time domain features to serve as input of a support vector machine; and inputting feature vectors in the feature matrix into a support vector machine after training optimization, and performing working condition identification on the features by using the support vector machine to determine a leakage position. According to the method, a complex data leakage mode can be identified, and the detection accuracy is improved through continuous iterative optimization of the model.

The invention relates to the field of glass, in particular to ultrathin flexible cover plate glass as well as a preparation method and application thereof. The glass is composed of 10-30% of UTG cullet and 70-90% of a specific batch and contains SiO2, Al2O3, Na2O and the like, and the decolorizing agent is prepared by compounding NaNO3 and K2O according to the ratio of 1: 0.2-1: 1. The preparation method comprises the following steps: adding cullet at 1000 DEG C and 1200 DEG C in two stages, carrying out heat preservation and homogenization at 1200-1300 DEG C for 30-60 minutes, and carrying out melting clarification at 1500-1600 DEG C and temperature-controlled annealing. The thickness of the obtained glass is 30-70 microns, the surface pressure stress after chemical strengthening is larger than or equal to 680 MPa, and the bending radius is smaller than or equal to 1.8 mm. According to the method, by means of collaborative design of components and the process, high performance is guaranteed, waste recycling is achieved at the same time, and the method is suitable for folding mobile phones, flexible OLEDs and other devices.

The invention relates to cargo transportation equipment, in particular to transportation equipment for loading and unloading liquid dangerous cargos, and aims to solve the technical problems that most valves used by existing common tank containers are manually opened and closed and need to be manually operated during use, the operation risk is high, and the efficiency is poor. The oil gas recovery device comprises a gas phase pipeline, an oil gas recovery connector, an oil gas recovery connector interlocking valve, an oil gas recovery valve, a sideboard vent valve, a main control gas source connector and a main control switch, the oil gas recovery valve is connected with the oil gas recovery connector through the gas phase pipeline, one end of the sideboard vent valve is communicated with the atmosphere, and the other end of the sideboard vent valve is connected with the gas phase pipeline through a first tee joint; the oil and gas recovery joint interlocking valve is mounted on the oil and gas recovery joint and is in a normally-closed state; a main control switch air inlet is connected with the main control air source connector, an air outlet is connected with the air inlet end of the oil-gas recovery connector interlocking valve and the oil-gas recovery valve, and the air outlet end of the oil-gas recovery connector interlocking valve is connected with the side plate vent valve.

The application discloses a kind of high adhesion hydrogel for electroencephalogram test and its preparation method and application, belong to biomedical engineering technical field.The hydrogel includes the following components crosslinked product: anionic monomer, cationic monomer, monomer and mutual penetration agent;The anionic monomer is any one of malic acid, gluconic acid, citric acid and lactic acid, cationic monomer is betaine or acetyl L-carnitine, monomer is N, N-dimethyl acrylamide, acrylic acid, sodium acrylate, 4-acryloyl morpholine or sodium acrylamidomethyl propane sulfonate, mutual penetration agent is sodium chloride aqueous solution or sodium chloride water-retaining agent solution.Preparation, cationic monomer is mixed and dissolved, vacuum drying, adding photo initiator mixing, then mutual penetration agent is added, and it is obtained by ultraviolet light crosslinking.The hydrogel of the application has high adhesion (adhesion strength reaches 203.22 kPa), high ion mobility and excellent biocompatibility, and the signal gain in EEG and ECG test reaches 2-3 times of traditional conductive paste, which can be widely used in medical conductive paste field.

The invention discloses a preparation method of low-temperature open-pore porous ceramic. The method comprises the following steps: taking one of tailings, metallurgical slag or natural clay minerals as a framework material, taking water-soluble chlorine salt powder as a pore forming agent, and taking waste glass powder as a structural stabilizer; mixing the three components according to a set proportion, carrying out compression molding, and sintering at a temperature lower than 1000 DEG C to obtain a compact ceramic body; and immersing the porous ceramic into water to dissolve out chlorine salt, and drying to obtain the open-pore porous ceramic. According to the preparation method, the solution from which the chlorine salt is dissolved out is evaporated and crystallized, so that the pore-forming agent can be recycled, and recycling is realized. The porous ceramic with a stable structure is prepared at a low temperature, the process is simple, energy is saved, consumption is reduced, the pore-forming agent can be recycled, and the method has the advantages of being environmentally friendly and low in cost.

The invention discloses a method for efficiently leaching platinum group metal in a waste automobile catalyst, and belongs to the field of rare and precious metal smelting. The method comprises the following steps: a leaching process: mixing the hulled waste automobile catalyst with a leaching agent, carrying out acid leaching in an acidic solution for a period of time, adding a complexing agent to complex platinum group metals, leaching for a period of time, and filtering to obtain a pregnant solution rich in the platinum group metals and carrier residues; wherein the leaching agent is a cerium-containing compound; a resin adsorption process: adsorbing the pregnant solution through an adsorption column filled with adsorption resin to obtain an adsorbed solution; and an elution process: washing the adsorbed adsorption resin with water and eluting the platinum group metal step by step, and regenerating the eluted adsorption resin for cyclic utilization. The method aims at avoiding generation of toxic and harmful substances (chlorine and NOx) and use of highly toxic cyanide in an existing wet process, environmental pollution and potential safety hazards are fundamentally eliminated, and meanwhile the leaching efficiency of the platinum group metal is remarkably improved.

The invention discloses a preparation method of a carbon dioxide hydrogenation reaction catalyst. The preparation method of the oxygen carrier comprises the following steps: placing one or more of particles manually loaded with a copper element or natural ore particles and blank alumina pellets in a fluidized bed reactor according to a ratio, introducing methane gas, and jointly fluidizing at 600 DEG C for 2 hours; and after the reaction is finished and cooling, introducing nitrogen, and adjusting the gas speed until particles are layered to obtain the product catalyst. According to the method, inert particles which are originally wasted in the chemical looping combustion industry can become core components for preparing the catalyst, a special carrier does not need to be additionally purchased, the raw material cost of the catalyst is remarkably reduced, active elements on the surfaces of the prepared particles are uniformly loaded, the wear rate is smaller than 0.2% / h, and the method is a catalyst preparation method oriented to industrial application.

The invention provides biomass cotton cellulose based on waste cotton textiles and a preparation method thereof, and the method comprises the following steps: crushing the waste cotton textiles, sterilizing, disinfecting, drying, dipping in alkali liquor and cooking, adding a DES eutectic solvent, mixing, pulping the obtained material, bleaching, desanding, concentrating and papermaking to obtain the biomass cotton cellulose. Wherein a metal chlorate catalyst and an auxiliary agent are added during cooking. According to the method, the waste cotton textile is adopted as a raw material, and the cotton cellulose with excellent performance is prepared by performing high-added-value recovery on the waste cotton textile, so that the environmental problem caused by the waste cotton textile can be effectively relieved, and the resource waste is reduced. Meanwhile, the production cost of the cotton cellulose can be reduced, and the problem of insufficient production raw materials of existing biomass cellulose products is solved.

The invention relates to the technical field of aqueous zinc ion batteries, and discloses a high-utilization-rate and high-stability zinc electrode as well as a preparation method and application thereof. The zinc electrode comprises a base body and a functional coating attached to the surface of the base body, and the functional coating is formed by coating the surface of the base body with slurry formed by zinc powder, an adhesive and a functional additive and drying the slurry. According to the obtained zinc electrode, the zinc ion diffusivity under the high DOD condition can be remarkably improved, the free water induced parasitic side reaction and the stress cracking problem caused by the volume effect are inhibited, the long circulation stability under the high zinc metal utilization rate (15-96%) condition is prolonged, and the good application prospect is shown in a low N / P zinc-based device.

The present invention discloses a method and system for automatic identification of cerebral hemorrhage based on deep learning, the method comprising: performing data preprocessing on the original brain CT image to obtain preprocessed data; constructing an improved UNet model with dilated convolution, performing downsampling through an encoder, performing upsampling through a decoder, separating the encoder from the decoder through a single convolution layer, and connecting each downsampling step to the corresponding upsampling step; introducing a GAN network structure into the improved UNet model, inputting the preprocessed data into the improved UNet model to train the improved UNet model to obtain an optimal improved UNet model; performing data preprocessing on the brain CT image to be identified, inputting the data into the optimal improved UNet model, and outputting the identification result. The application of the technical solution of the present invention is helpful to solve the problems of low accuracy, efficiency and reliability of hemorrhagic stroke detection in the prior art.

The utility model relates to an intercooler progressive die stamping device which comprises a stamping device body, a collecting box is arranged at the bottom of the stamping device body, and a collecting assembly used for collecting metal chippings is installed on the collecting box. The collecting pipes are fixed and communicated with the side wall of the collecting box, the collecting covers are fixed and communicated with the ends, away from the collecting box, of the collecting pipes, the exhaust fan is fixed and communicated with the side wall of the collecting box, the two collecting pipes and the two collecting covers are symmetrically arranged, and the two collecting pipes and the two collecting covers are arranged on the two sides of the stamping device body correspondingly; when stamping production is conducted on the intercooler through the stamping device body, a worker starts the exhaust fan, the exhaust fan provides suction force for the collecting pipe, so that metal chippings generated by stamping are sucked into the collecting box through the collecting cover, the collecting pipe and the collecting cover on the two sides collect the metal chippings splashed on the two sides correspondingly, and the metal chippings are collected through the collecting pipe and the collecting cover. And the collecting effect on the metal chippings is improved, and the probability that the metal chippings influence the working efficiency and the working environment is reduced.

The present invention relates to the technical field of building corridors, and in particular to an assembled building corridor and a construction method thereof. The present invention detects the horizontal angle difference of a support frame by using an optical measuring instrument, and can adjust the horizontality of the support frame according to the horizontal angle difference; the support frame comprises a channel steel base, a round steel structure column, a round steel pole, a round steel structure beam, a square steel beam, square steel and a process-formed ceiling aluminum plate; the position of auxiliary components of the corridor can be quickly adjusted according to the concentration of particulate matter at the corridor position, and the auxiliary components are installed using a nut gun to form a corridor to be processed; the auxiliary components comprise a formed aluminum plate module B, a formed aluminum plate module A and a formed aluminum plate module C; the corridor to be processed is processed, and the corridor to be processed is waterproofed and anti-corrosive in turn, and after installation, the paint surface is processed after the interval to form a completed corridor; the accuracy and efficiency of the assembled building corridor are improved.

The invention belongs to the technical field of pile foundation construction, and particularly relates to a construction method of an environment-friendly high-strength precast concrete pipe pile, which comprises the following steps: step 1, before construction, carrying out detailed investigation on a construction site through a geological radar, determining underground obstacles and geological conditions, formulating a hole forming and pile planting scheme according to a geological report, and constructing a pile; and proper drill bits and pile types are selected. According to the construction method, by arranging a hydraulic static pile planting technology, energy consumption and environmental influence in the construction process are effectively reduced, and noise and vibration are reduced; the equipment integrates various piling modes such as hammering, vibration and static pressure, the modes can be switched at any time according to geological changes in the construction process, the equipment does not need to be replaced, time and cost are saved, the construction efficiency is improved, meanwhile, the construction requirements of different engineering types can be met, the application range of the equipment is widened, and the equipment is worthy of popularization and application. And the universality of the equipment is improved.

A method for preparing an antibacterial elastic fiber material belongs to the modification technology of high molecular polymer materials. The present invention uses waste oyster shells, elastomer compatibilizers, SiO2 aerogels, and PET materials as raw materials. First, nano-scale oyster shell powder is prepared by pre-treating, calcining, crushing, and grinding the oyster shells; secondly, the powder is melt-blended with PET, elastomer compatibilizers, and SiO2 aerogels in a certain proportion, and the uniform melt blend is extruded and granulated, cooled and dried, and sliced; finally, the slices are melted again, extruded and drawn into fibers for use in the textile field. The present invention processes waste oyster shells in depth, turning waste into treasure, and applies them to polymer modification. The modified fiber materials can show good antibacterial properties, elastic properties, and deodorizing and adsorption effects, and can reduce production costs and save petroleum resources. Since the product has antibacterial properties, it also actively promotes the research of new functional materials.

The present invention belongs to the field of materials, and relates to a porous material rich in nitrogen, oxygen, and fluorine heteroatoms, and a preparation method and application thereof. The preparation method comprises the following steps: using dichloromethane as a solvent, polystyrene as an organic template, potassium carbonate as an inorganic template, adding anhydrous sodium sulfate, cyanuric chloride, and bisphenol AF, heating and polycondensing, performing two Soxhlet extractions to remove polystyrene, cyanuric chloride, and bisphenol AF respectively, and vacuum drying to obtain a porous material rich in nitrogen, oxygen, and fluorine heteroatoms. The porous material is used to adsorb lithium ions in waste liquid recovered from power batteries, reduce the cost of lithium ion recovery, and achieve the goal of turning waste into treasure and reducing pollution emissions.

The invention discloses a track sleeper chipping disease detection system based on a PCA technology, and relates to the technical field of chipping disease detection, and the system comprises the steps: collecting an original sleeper image through an image collection module as a to-be-detected image; the sleeper chipping image analysis module extracts a data dictionary by collecting a normal sleeper image set, generates a data model through PCA algorithm dimensionality reduction, constructs a reference image in combination with projection transformation of a to-be-detected image, preprocesses the to-be-detected image, and makes a difference between the to-be-detected image and the reference image to obtain a comparison image. And judging a falling block disease region through threshold segmentation and connected region area calculation, and marking an output result. According to the method, high-efficiency and high-precision recognition of sleeper falling block disease detection is realized, and the method is effectively adaptive to scenes with complex sleeper surface textures and redundant high-dimensional data.