23results about How to "The method steps are simple" patented technology

The application discloses an airborne equipment weighing device, which comprises an article support, a ball, a ball support, a pressure sensor, a pressure sensor display instrument, a pressure sensor support and a support base, the article support is supported on the ball, the ball is inlaid on the ball support, one end of the ball supports the article support, the other end of the ball is pressed on the pressure sensor, one end of the pressure sensor supports the ball, the other end of the pressure sensor is connected with the pressure sensor display instrument through a wire, the pressure sensor is installed on the pressure sensor support through screw threads, and the pressure sensor support is arranged on the support base. The application has the advantages of simple operation, small error, clear principle, convenient production, high practicability, easy popularization and application and great value.

This invention discloses a method for measuring building tilt based on total station DR mode, comprising the following steps: 1. Establishing a distance measurement error compensation model using distance measurement experiments of characteristic points on the building; 2. Establishing a high-precision three-dimensional control network based on the site conditions of the building; 3. Selecting characteristic points for building tilt measurement and estimating the height of these characteristic points above the ground; 4. Estimating the station location based on the height of these characteristic points above the ground, and precisely adjusting the station location using observations from the total station DR mode; 5. Analyzing and compensating for the distance observations based on the DR mode distance measurement error compensation model; 6. Calculating the coordinates of the characteristic points for building tilt measurement and obtaining the building tilt amount. This invention, based on total station DR mode distance measurement error correction and the establishment of a high-precision three-dimensional control network, offers high accuracy and reliability, allowing tilt measurement work to be carried out without contact with the building, making it suitable for use in sudden, extremely dangerous site environments.

The application discloses a method for quickly determining seismic wave travel time, which comprises the following steps: step one, reading in relevant parameter files and a velocity model; and step two, using a computer to judge all grid points to obtain seismic wave travel time of all grid points. The method has simple steps and reasonable design, and the seismic wave travel time is obtained by multiplying the distance from a grid point to a seismic source point and a seismic wave travel time disturbance, so that the problem of large seismic source error in the calculation of seismic wave travel time by the original fast marching method is solved.

The invention discloses a rock slag feature recognition method based on multi-sensor fusion. The method comprises the steps that 1, an industrial camera and a laser radar synchronously collect rock slag images and point cloud data; 2, an improved YOLO11n-seg network is constructed; 3, performing feature extraction on the rock slag image through an improved YOLO11n-seg network; 4, constructing total loss; 5, training the improved YOLO11n-seg network on the basis of the total loss; 6, segmenting a subsequent rock slag image to be processed to obtain a rock slag area segmentation map; 7, projecting the original point cloud data to obtain the point cloud of each rock slag area; and obtaining the rock slag volume based on the point cloud of each rock slag area. The method is simple in step, instance segmentation of the rock slag target area is achieved through the improved YOLO11n-seg network, the contour shape and the volume of the rock slag are obtained, and therefore a basis is provided for parameter optimization of follow-up TBM tunneling.

The present disclosure relates to a method for adsorptive separation of normal alkanes in C10-C25 distillate oil, comprising the following steps: S1, first contacting C10-C25 distillate oil with an adsorbent to obtain a desorption material containing C10-C25 normal alkanes and the adsorbent, and a raffinate containing C10-C25 isomeric alkanes, C10-C25 naphthenes, C10-C25 aromatics and a desorbent; S2, second contacting the desorbent with the desorption material to obtain an extract containing C10-C25 normal alkanes and the desorbent; the C10-C25 distillate oil comprises C10-C25 normal alkanes, C10-C25 isomeric alkanes, C10-C25 naphthenes and C10-C25 aromatics; the desorbent comprises C5-C8 normal alkanes, C6-C8 aromatics and optional C5-C8 isomeric alkanes; the particle size of the adsorbent is 0.3-0.6 mm, the adsorbent comprises 5A molecular sieve, and the crystal grain size of the 5A molecular sieve is 0.2-0.8 μm; the method can significantly improve the yield of normal alkanes above C14 and reduce the content of aromatics in normal alkanes.

The invention relates to a titanium silicalite molecular sieve, a preparation method thereof and a method for preparing epoxypropane, and the method comprises the following steps: S1, mixing titanium silicalite molecular sieve raw powder, a first main binder, water, an optional first binder and an optional first surfactant, and carrying out first molding to obtain titanium silicalite molecular sieve microspheres; s2, mixing the titanium silicalite molecular sieve microspheres, a second binder, water and an optional second surfactant, and carrying out secondary molding to obtain a titanium silicalite molecular sieve precursor; s3, performing steam aging on the titanium silicalite molecular sieve precursor to obtain a titanium silicalite molecular sieve pre-product; and S4, carrying out roasting treatment on the titanium silicalite molecular sieve pre-product. The titanium silicalite molecular sieve prepared by the method disclosed by the invention has a porous structure and high mechanical strength, is used for propylene epoxidation reaction, and can obtain relatively high raw material conversion rate and target product selectivity.

The present application relates to the field of paper-based energy storage, and discloses a water evaporation induced V-shaped paper-based generator and a preparation method thereof, wherein the present application utilizes UV light curing ink to be treated by ultraviolet irradiation to make the hydrophilic paper surface be hydrophobic modified, the paper in the hydrophilic area can drive fluid flow under the capillary action and natural evaporation, and the surface fluid flow of the hydrophilic material can generate a mechanism of flow potential. The method has simple steps, the whole light curing process is controllable, the efficiency is extremely high, and the method can be used for preparing a simple and portable water evaporation induced paper-based generator. The V-shaped structure of the paper-based generator prepared by the present application can realize effective transmission of fluid and effective connection of the circuit, and the paper-based generator can be used for preparing an arrayed water evaporation induced paper-based generator.

This invention discloses a method for preparing high-purity cyclohexanediaminetetraacetic acid (CYA), comprising the following steps: S1: Adding cyclohexanediamine raw material to a reaction medium, adding an alkaline pH adjuster, and stirring until completely dissolved to obtain a cyclohexanediamine alkaline solution; S2: Adding chloroacetic acid to the cyclohexanediamine alkaline solution to perform a nucleophilic substitution reaction to obtain a crude CYA solution; S3: Adjusting the pH of the crude solution to 0.5-3.0 to precipitate CYA to obtain a crude precipitate; S4: Adding the crude precipitate to an alkaline solution and stirring to obtain a crude solution, then adding a complexing agent for purification; S5: Adjusting the pH of the solution to 1-3 to precipitate high-purity CYA; S6: Filtering, washing, and drying to obtain the high-purity CYA product. The advantages of this invention compared to existing technologies are: providing a simple, cost-effective, and easily applicable method for preparing high-purity CYA.

This invention relates to the field of frozen food pretreatment technology, and more particularly to a method for improving the quality of frozen-thawed chicken cutlets. Compared with existing technologies, this invention provides a method for improving the quality of frozen-thawed chicken cutlets by using ultrasound to assist in the treatment of chicken cutlets before freezing, thereby improving the quality of the frozen-thawed chicken cutlets and enhancing their taste and other characteristics. The method provided by this invention is simple, convenient to operate, safe, and reliable. Using natural king oyster mushrooms as a modifying ingredient, it is natural and healthy, does not introduce secondary pollution, and can effectively ensure food safety. The method provided by this invention has controllable costs, with the main cost being the king oyster mushroom powder. It does not rely on complex equipment, has the potential for industrial-scale production, and has broad application prospects.

The application relates to the field of sodium ion batteries, and discloses a preparation method of hierarchical porous Fe7S8 / nitrogen-doped carbon composite nanowires and application thereof. The application takes NTA as a metal ion chelating agent, chelates zinc ions and iron ions through a solvothermal reaction, and prepares a ZnFe-NTA precursor; the precursor is pyrolyzed at high temperature under an inert atmosphere, metal ion reduction is induced through a carbon thermal reaction, low-boiling-point zinc particles are volatilized, nitrogen-doped carbon formed through in-situ conversion of an organic ligand is combined, and a hierarchical porous structure is generated; finally, a gas-phase sulfuration method is adopted to form Fe7S8, and the hierarchical porous Fe7S8 / nitrogen-doped carbon composite nanowires are obtained. When the composite nanowires are used as a negative electrode of a sodium ion battery, the hierarchical porous structure can effectively promote full infiltration of electrolyte and rapid migration of sodium ions, and can improve cycle stability and rate performance.

The application discloses an infrared image generation method combining space and frequency domains, comprising the following steps: 1, obtaining training set images; 2, constructing a GAN network combining space and frequency domains; 3, inputting the training set into the GAN network combining space and frequency domains to perform training, and obtaining a trained GAN network combining space and frequency domains; and 4, generating infrared images based on the trained GAN network combining space and frequency domains. The method is simple in steps and reasonable in design, the GAN network combining space and frequency domains realizes generation of visible light images into infrared images, retains frequency domain features and strengthens edge constraints, and utilizes a multi-scale discriminator and a composite loss function to optimize adversarial training, improve the generation quality of infrared images and solve the problem that it is difficult to balance local details and overall consistency.

The invention relates to a negative electrode active material, a negative electrode and preparation methods and applications of the negative electrode active material and the negative electrode, the negative electrode active material contains first silicon-containing particles and first metal nanowires, the first silicon-containing particles and the first metal nanowires are connected through an alloy, the first metal nanowires comprise metal M, and the alloy phase comprises an M-Si alloy. The lithium ion battery prepared from the negative electrode plate containing the negative electrode active material disclosed by the invention can obtain a relatively low expansion rate, a relatively high capacity retention ratio and a relatively high first effect.

This invention relates to the field of environmental protection technology for coal-fired boilers, solving the problem of the difficulty in obtaining integrated, automated, and precise information on the characteristics of fly ash from coal-fired boilers. Specifically, it discloses a system and method for obtaining fly ash characteristics in coal-fired boilers, including a fly ash collection module, a fly ash pretreatment module, a characteristic detection module, a data processing module, and a control module. The fly ash collection module is connected to the flue of the coal-fired boiler; the fly ash pretreatment module is connected to the fly ash collection module; the characteristic detection module is connected to the fly ash pretreatment module; the data processing module is connected to both the characteristic detection module and the control module; and the control module is electrically connected to each of the three modules. The method of this invention includes S1, fly ash collection; S2, fly ash pretreatment; S3, characteristic detection; and S4, data processing and output. This invention is used for obtaining and detecting fly ash characteristics during combustion in coal-fired boilers, and features integration, automation, and high precision.

The invention discloses a method for rapidly depolymerizing hectorite nanosheets, and belongs to the technical field of nano powder preparation. The method comprises the following steps: preparing synthetic hectorite into a suspension with the mass concentration of 0.1 wt%-5wt%, adjusting the pH value to 2-12 by using acid and alkali, carrying out high-pressure homogenization treatment under the pressure of 10-100 MPa, and carrying out filter pressing and strong drying to obtain the delaminated nano hectorite powder with the lamella thickness of 2-10 nm and the water content of less than or equal to 2.0%. Through the synergistic effect of pH regulation and high-pressure homogenization, on the premise of not damaging a crystal structure, efficient and rapid depolymerization of hectorite is achieved, and the method has the advantages of being simple in process, low in cost and easy to amplify.

The invention relates to a high-impact-resistance polyurethane elastomer containing a cyclodextrin metal organic framework structure and a preparation method of the high-impact-resistance polyurethane elastomer, and belongs to the technical field of elastomeric polymers. The invention provides a high-impact-resistance polyurethane elastomer containing a cyclodextrin metal organic framework structure, the high-impact-resistance polyurethane containing the cyclodextrin metal organic framework structure is novel polyurethane with high impact resistance, CD-MOF can be cross-linked with a macromolecular chain and form a regular and ordered structure with the macromolecular chain, microcrystals are formed, and the high-impact-resistance polyurethane elastomer containing the cyclodextrin metal organic framework structure is prepared. The mechanical property of the polyurethane is improved. When the polyurethane is subjected to external impact, microcrystals are damaged to absorb part of energy, so that the damage degree of molecular chains is weakened, and the impact resistance of the polyurethane is improved. The method is simple in step, an experimental formula can be changed according to production requirements, and industrial production can be carried out.

The application belongs to the technical field of chemical synthesis, and particularly relates to a synthesis method of 4-methylsulfonyl toluene. Specifically, 4-methylsulfonamide chloride is used as raw material, and under the action of a catalyst, the raw material is reacted with chloromethane Grignard solution at normal pressure, and high-yield and high-purity 4-methylsulfonyl toluene is obtained after purification. The method has the advantages of simple steps, high yield, almost no other impurities, high atomic utilization rate, easy industrialization, and good application value.

The present application belongs to the technical field of railway subgrade construction, and particularly relates to a coal mining subsidence area flood prevention type railway subgrade reinforcing structure, which comprises a railway subgrade with an inclined slope, the top of the railway subgrade is provided with a track bed, the track bed is fixed with sleepers, the slope of the railway subgrade is provided with a reinforcing layer, the reinforcing layer comprises a geotextile layer, a wire mesh layer and a grouting anchor rod, the geotextile layer is arranged on the slope surface of the railway subgrade, the wire mesh layer is arranged on the geotextile layer, the grouting anchor rod is arranged in the slope of the railway subgrade and is perpendicular to the slope surface, a grouting pipe pile is vertically arranged in the railway subgrade, and the surface of the railway subgrade is sprayed with a concrete layer. The present application forms a composite supporting reinforcing structure through the wire mesh, the geotextile, the grouting anchor rod, the grouting pipe pile, the concrete layer and the grouting mode, plays a good flood prevention and reinforcement role for the railway subgrade, and solves the problems of instability of the existing railway subgrade after soaking in water for a long time and easy washing away after flooding.

The application discloses a cellulose solution containing a stabilizer and a preparation method and application thereof, and the preparation method comprises the following steps: stirring and mixing an ionic liquid and a stabilizer at room temperature until a uniform mixture is obtained; adding a cellulose raw material into the obtained mixture, fully stirring and pre-mixing at room temperature to form a pre-dissolved cellulose mixture; and heating and stirring the obtained cellulose mixture until the cellulose raw material is completely dissolved to form a uniform and transparent cellulose solution, that is, the cellulose solution containing the stabilizer is obtained. By adding the stabilizer, the application reduces the color deepening of the ionic liquid in the process of dissolving the cellulose under high temperature or water-containing conditions.

The present application relates to a preparation method of exosomes, comprising the following steps: 1) concentrating cell supernatant to obtain a concentrated solution by using a tangential flow filtration method; 2) removing nucleic acids from the concentrated solution by using a universal nuclease and resuspending to obtain a crude extract; 3) performing density gradient centrifugation on the crude extract, and collecting the exosome layer; 4) performing low-speed centrifugation on the exosome layer under a centrifugal force less than or equal to 50000g, and removing the precipitate to obtain a preliminary purified solution; and 5) performing ultracentrifugation on the preliminary purified solution under a centrifugal force greater than or equal to 100000g, and the obtained precipitate is the exosomes. The exosomes obtained by the method have a complete and un-deformed membrane structure, higher purity and particle concentration, and better quality compared with exosomes prepared by existing methods. Meanwhile, the method has high yield and low cost, and helps to realize the industrialized preparation of exosomes, and provides strong support for targeted drug delivery research using exosomes as carriers.

The invention relates to the technical field of purification of cold hydrogenated slurry high-boiling residues, and provides a modified coconut shell activated carbon adsorbent as well as a preparation method and application thereof. The modified coconut shell activated carbon adsorbent is characterized by comprising a coconut shell activated carbon substrate; the alkaline nitrogen-containing functional group is covalently bonded on the coconut shell activated carbon substrate. The alkaline nitrogen-containing functional group is stably loaded on the surface of the activated carbon in a covalent bond mode instead of simple physical impregnation, and efficient and high-selectivity adsorption is achieved through the acid-base coordination effect of the alkaline nitrogen-containing functional group and aluminum and titanium impurities. The preparation method of the modified coconut shell activated carbon adsorbent comprises the following steps: carrying out first reaction on a coconut shell activated carbon substrate and oxidizing acid to obtain oxidized coconut shell activated carbon; and carrying out a second reaction on the oxidized coconut shell activated carbon and an amine-containing compound to obtain the modified coconut shell activated carbon adsorbent. The method is simple in steps, mild in reaction conditions and easy to industrialize.

The invention discloses a manufacturing method of an electrostatic chuck, and aims to solve the problems that an air passage is easily blocked by an adhesive in the existing bonding process, the connectivity of the air passage after bonding is poor and the like. According to the method, the second air channel of the metal base plate is filled with the removable glue and cured, so that the adhesive glue is prevented from flowing into the air channel in the bonding process; after the ceramic substrate and the metal base plate are bonded, the removable glue and the local bonding layer are damaged, and it is ensured that the first air channel communicates with the second air channel. The method disclosed by the invention is simple, can effectively ensure the smoothness of the air passage after bonding and the bonding firmness, and is suitable for large-scale production and application.

The invention discloses a rock slag simulation experiment platform and method based on multi-sensor fusion, the platform comprises a belt conveyor U-shaped support frame and multiple sensors, and the multiple sensors comprise an industrial camera, a laser radar, an illumination sensor and a temperature and humidity sensor; the method comprises the following steps: 1, simulating the actual slag conveying working condition of the TBM; 2, acquiring simulated rock slag; 3, synchronously acquiring simulated rock slag images and point cloud data; 4, based on the simulated rock slag image and the point cloud data, obtaining a simulated rock slag volume and a simulated rock slag area contour; and 5, establishing a correlation database of double thresholds of lithology, water content, rock slag state, reflection intensity and saturation. The method is reasonable in design, simulates the actual slag conveying working condition of the TBM, obtains the volume and the contour shape of the simulated rock slag, establishes a correlation database of the lithology, the water content, the rock slag state, the reflection intensity and the saturation, is conveniently applied to the TBM tunneling process subsequently, and provides a basis for TBM tunneling parameter optimization.

The application discloses a two-dimensional flexible material compounded by vanadium oxyphosphate and MXene and a preparation method and application thereof, and belongs to the technical field of functional nanomaterial preparation. The application first prepares multilayer vanadium oxyphosphate through a hydrothermal method, then fully mixes vanadium oxyphosphate which is stripped through a liquid phase with MXene and polyacrylonitrile to prepare a spinning liquid, adopts an electrostatic spinning method to obtain a polymer fiber film doped with vanadium oxyphosphate nanosheets, and further carries out calcination and carbonization treatment in an ammonia atmosphere to obtain a flexible porous vanadium-based nanofiber film material. The vanadium oxyphosphate film material prepared by the method has physical properties of rich active sites, high conductivity, sufficient ion transmission channels, good flexibility and excellent self-supporting structure, has the advantages of high activity, high capacity and high stability in energy storage application, and has an excellent application prospect. The preparation process of the application is simple, energy consumption is low, and the application is suitable for industrial large-scale production.