220results about How to "The method steps are simple" patented technology

The invention discloses an amorphous solid form of a compound as shown in a formula (I), an X-ray powder diffraction pattern of the amorphous solid form has no characteristic diffraction peak within the 2 theta angle range of 0-40 degrees, the amorphous solid form as shown in the figure 1 has good stability, the dissolution rate of tablets prepared from the amorphous solid form can reach 95% or above within 10 min, and the dissolution rate of the tablets can reach 95% or above within 10 min. Meanwhile, excellent dissolution uniformity is achieved, high solubility can be achieved in the human physiological pH environment, and the oral bioavailability of the tigorazan is greatly improved. The preparation method of the amorphous solid comprises the following steps: adding the following formula (I) into an organic solvent, heating, dissolving, cooling, adding a poor solvent, and crystallizing to obtain the amorphous solid. The method is simple in step, easy to operate, capable of effectively reducing cost and suitable for industrial large-scale production. # imgabs0 #

The invention discloses a cationic polymer-based proteolysis targeting chimera as well as preparation and application thereof, and belongs to the fields of targeting protein degradation and nanotechnology. According to the chimera, a cationic polymer is used as a connecting arm to connect a target protein ligand and an E3 ubiquitin ligase ligand to form a ternary complex, so that efficient degradation of target protein is realized. By adjusting the ligand proportion, chimeras with different degradation efficiencies can be synthesized, and accurate regulation and control are realized. The pH-responsive nano-drug obtained by hydrolyzing the targeting chimera by using the targeting protein can respond to an acidic tumor microenvironment, specifically release the chimera, and improve the targeting property and the treatment effect of the drug. Compared with the traditional PROTACs, the compound has higher bioavailability and tumor permeation effect; the preparation method of the nano-drug is simple and easy to implement, provides possibility for preparation of high-performance nano-drugs, shows potential in preparation of anti-tumor cell drugs, provides new thoughts and methods for tumor treatment, and has important clinical application value.

The invention discloses a runoff prediction method based on a bidirectional long-short-term memory recurrent neural network, and belongs to the technical field of runoff prediction. The method comprises the following steps: preprocessing original data to obtain a data set, and dividing the data set into a training set and a verification set; constructing a runoff prediction network model, wherein the runoff prediction network model comprises a forward LSTM module, a reverse LSTM module, an Adam optimizer, a Dropout regularization layer and a Dense full connection layer which are connected in sequence; setting a hyper-parameter and a loss function, and training the constructed model by adopting the training set to obtain a trained runoff prediction model; and inputting verification set data into the trained runoff prediction model to obtain predicted runoff. According to the method, the association between the past and future runoff time series data can be mined, the problem of poor feature extraction and memory effect of early learning part data caused by unidirectional learning is effectively avoided, and the prediction precision is improved while better applicability is achieved.

The invention discloses combined cumquat and a preparation method and application thereof, and belongs to the technical field of combined cumquat preparation. The preparation method comprises the following steps: adding di-tert-butyl peroxide into isopropyl benzene at the temperature of more than or equal to 130 DEG C and less than 140 DEG C for reaction; the molar ratio of the cumene to the di-tert-butyl peroxide is (2: 0.6)-(2: 1.4), the adding speed of the di-tert-butyl peroxide is 1s / drop to 2s / drop, the reaction temperature does not exceed 150 DEG C, and the reaction time is not less than 4 hours. The method is simple to operate, relatively low in cost, relatively short in reaction time, free of wastewater generation and environment-friendly, only one initiator is needed, and combined cumyl chloride with relatively high purity can be obtained through the method. The obtained combined catalyst can be used for flame-retardant synergism, high-molecular modification or initiation of high-temperature polymer reaction and the like.

The invention provides a method for improving the emulsibility of soybean milk, which comprises the following steps: placing soybean milk in a composite electromagnetic field which comprises an alternating electric field and a rotating magnetic field which are superposed; wherein the excitation voltage of the applied alternating electric field is 400-700 V, the frequency of the applied alternating electric field is 400-500 Hz, the magnetic field intensity of the applied rotating magnetic field is 8-12 mT, the frequency of the applied rotating magnetic field is 5-10 Hz, and the direction of the alternating electric field is perpendicular to the direction of the rotating magnetic field, so that the composite electromagnetic field is formed through superposition. An induced electric field and an induced current formed in the soybean milk by the applied alternating electric field can change the polarity environment of the soybean milk and inhibit protein in the soybean milk from being condensed into macromolecular agglomerates, and the applied rotating magnetic field can enable the protein to be uniformly dispersed in the soybean milk, so that the emulsibility of the soybean milk is improved; the soybean milk treated by the method is finer and softer in taste, and the quality is improved.

The invention discloses a preparation method of a pole piece for improving lithium precipitation at an arc position of a winding type battery cell and the battery cell, and relates to the technical field of winding type lithium ion batteries, the preparation method of the pole piece comprises the following steps: setting a rolling program according to a selected winding battery cell model, and setting the rolling pressure of an arc area to be smaller than that of a non-arc area; and rolling the current collector coiled material coated with the active substance according to a rolling procedure, and cutting to obtain the pole piece. According to the method, the roller pressure at the arc is reduced, so that the arc is thicker and lower in compaction, and the positive and negative plates are thicker and lower in compaction at the arc, so that under the action of the winding force, the fitting degree between the positive and negative electrodes of the winding type arc and the diaphragm is obviously improved. And at the corner and the position with relatively small compaction density of the pole piece, the migration kinetics of lithium ions is guaranteed, and lithium separation can be avoided under high magnification.

The invention relates to a device and method for preparing a cable buffer layer ablation sample by using a high-temperature ablation technology, and the device comprises a fixing assembly which is used for clamping a cable, and the cable is coated with an insulation shielding layer and a buffer layer; the ablation assembly comprises a support and a flame generator arranged on the support, the cable is covered with the support, and the flame generator conducts an ablation experiment on the cable; the adjusting assembly is connected with the support, the adjusting assembly can drive the support to move in the axial extension direction of the cable, and the adjusting assembly can further drive the support to rotate around the axis of the cable, so that the flame generator can conduct ablation experiments on multiple positions of the cable. According to the device and the method, the ablation area of the high-voltage cable buffer layer ablation sample can be accurately controlled, meanwhile, a large number of ablation sites are prepared in a short time, and an efficient and accurate sample preparation device and method are provided for X-ray detection of the high-voltage cable buffer layer.

The invention discloses a method and a system for predicting the axial pressure stable bearing capacity of a trussed column by considering the influence of initial stress and creep, belongs to the technical field of trussed mixed structures, and solves the problem of low precision of predicting the axial pressure stable bearing capacity of the trussed column due to the fact that the influence of initial stress and creep is not considered. The method comprises the steps of determining basic parameters, considering the influence of shear deformation of the trussed column on initial stress, considering the influence of shear deformation of the trussed column on creep, calculating a stability coefficient, calculating the stable bearing capacity of the trussed column and the like. According to the model, an equilibrium differential equation is established based on the mechanics principle, mathematical calculation and derivation are carried out by applying the stability theory, and the influence of shear deformation, initial stress and creep on the axial pressure stable bearing capacity of the truss type column is comprehensively considered, so that the stable bearing capacity prediction method of the truss type column is provided. The method is suitable for predicting the axial pressure stable bearing capacity influenced by the initial stress and creep of the trussed column.

The invention belongs to the technical field of feed quality detection, and particularly relates to a method for detecting the fatty acid value of corn by using a near-infrared technology. The method for detecting the fatty acid value of the corn by utilizing the near-infrared technology comprises the following steps: S1, collecting spectral information of a corn sample and measuring a chemical value of the fatty acid value: collecting the corn sample, pre-treating the corn sample, performing near-infrared spectrum scanning on the treated corn sample, and collecting near-infrared spectrum information of the corn sample; detecting a fatty acid value result, namely a chemical value, of the corn sample by adopting a chemical method; the method for pretreating the corn sample comprises the following steps: removing impurities, crushing the corn sample subjected to impurity removal, and passing through a screen with the aperture of 0.3-0.5 mm; s2, spectrum processing of the corn sample and establishment of a calibration model: preprocessing near infrared spectrum information of the corn sample, and establishing the calibration model between a near infrared spectrum and a corn fatty acid value by using a chemometrics method; s3, rapid detection of a to-be-detected corn sample: taking the to-be-detected corn sample, carrying out near infrared spectrum scanning, collecting near infrared spectrum information of the to-be-detected corn sample, and importing the near infrared spectrum information of the to-be-detected corn sample into the calibration model established in the step S2 to obtain a fatty acid value result of the to-be-detected corn sample. According to the method, the detection efficiency can be remarkably improved, real-time monitoring is realized, and the quality of raw materials is guaranteed.

The invention provides a Cr2AlC-derived two-dimensional carbide material and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a Cr2AlC MAX phase: uniformly mixing three raw material powders of Cr powder, Al powder and C powder, then mixing with sodium chloride salt and potassium chloride salt, heating and sintering, cooling, washing, and carrying out vacuum drying to obtain a Cr2AlC MAX phase powder material; and (2) stripping of the Cr2AlC MAX phase: grinding and uniformly mixing the Cr2AlC MAX phase powder in the step (1), copper chloride salt, sodium chloride salt and potassium chloride salt, heating and preserving heat. And cooling to room temperature, centrifuging with deionized water, centrifugally washing with a FeCl3 solution, and freeze-drying to obtain the two-dimensional carbide material. The method is simple in step, mild in reaction, green and safe, complete and efficient stripping of Cr2AlC can be achieved, and the method can be used for two-dimensional stripping of other three-dimensional materials; the types of ions adsorbed on the surface of the two-dimensional material sheet layer are simple, F <-> harmful to electrochemical performance is not carried, and the obtained novel two-dimensional porous carbon material can be used as an electrode material in a supercapacitor.

The invention discloses a GNSS (Global Navigation Satellite System) and wind cloud satellite assisted meteorological and hydrological coupled runoff forecasting method. The method comprises the following steps: 1, GNSS two-dimensional water vapor inversion; 2, performing water vapor inversion on the Fengyun No.4; 3, performing three-dimensional variation assimilation on the precipitable water volume inverted by the GNSS and the precipitable water volume inverted by the FY-4 star A based on a WRF meteorological mode; and 4, runoff forecasting is carried out based on the WRF-Hydro hydrological model. The method is simple in step and reasonable in design, three-dimensional variational assimilation is performed on the precipitable water volume inversed by the GNSS and the precipitable water volume inversed by the FY-4 star A based on the WRF meteorological mode, accurate meteorological driving data is provided for a WRF-Hydro hydrological model, the dependence of WRF meteorological mode data assimilation on conventional meteorological observation data in traditional meteorological and hydrological coupling forecast is avoided, and the method is suitable for popularization and application. And the applicability of the WRF and WRF-Hydro model coupling mode in the meso-and small-scale watershed in the conventional data scarcity region is further improved.

The invention discloses a method for covalently modifying magnetic nanoparticles by metal ion-induced DNA (Deoxyribose Nucleic Acid) and application of the magnetic nanoparticles in quantitative detection of ochratoxin A, and belongs to the technical field of fluorescent biosensing analysis. The method for covalently modifying the magnetic nanoparticles by metal ion-induced DNA provided by the invention comprises the following steps: adsorbing DNA molecules on the surfaces of polydopamine-coated magnetic nanoparticles under the induction of metal ions, and carrying out covalent linkage to obtain the DNA molecule-modified magnetic nanoparticles. In the method provided by the invention, the electrostatic repulsion between the DNA molecules and the surface of the polydopamine is overcome through the induction effect of the metal ions, and the modification amount of the DNA molecules on the surfaces of the magnetic nanoparticles is greatly increased. The method is simple in steps, and the obtained DNA molecule modified magnetic nanoparticles have very high sequence selectivity and capture capability on uncombined OTA aptamers, and are beneficial to improving the sensitivity and accuracy of OTA detection.

The invention discloses a biphase titanium-based high-entropy hydrogen storage alloy with low-temperature efficient hydrogen storage performance, a preparation method of the biphase titanium-based high-entropy hydrogen storage alloy and application of the biphase titanium-based high-entropy hydrogen storage alloy in hydrogen absorption and desorption. The chemical expression of the biphase titanium-based high-entropy hydrogen storage alloy with the low-temperature efficient hydrogen storage performance is TiaZrbCrcMndNieVfFeg, a, b, c, d, e, f and g all represent atomic ratios, a, b, c, d and e are respectively and independently 0.95 to 1.05, f is 0.77 to 0.85, g is 0.18 to 0.20, and the sum of f and g is 0.95 to 1.05. The preparation method comprises the following steps: (1) mixing Ti, Zr, Cr, Mn, Ni and ferrovanadium alloy raw materials according to a chemical expression; and (2) smelting the raw materials mixed in the step (1), and cooling and solidifying after smelting to obtain the biphase titanium-based high-entropy hydrogen storage alloy with low-temperature efficient hydrogen storage performance.

The invention discloses a printing and dyeing method and an ink supply system thereof, and relates to the technical field of printing and dyeing, and the printing and dyeing method comprises the following steps: determining a fabric, testing the optimal liquid carrying rate of the fabric, obtaining the ink supply amount per square meter by using the optimal liquid carrying rate, measuring a Lab value or an HSB value, and carrying out color separation through RIP software to obtain the ink supply amount per square meter of each color, the measurement mode of the optimal liquid carrying rate is as follows: weighing the dry fabric and recording the weight m1; immersing the dry fabric into a dye, and fully stirring to enable the fabric to adsorb the dye liquor, so as to obtain a wet fabric; the wet fabric is attached to the surface of a rubber roller, a padder is started to run until no obvious color points or mottles exist on the surface of the fabric, and the treated wet fabric is obtained; weighing the treated wet fabric and recording the weight m2; the optimal liquid carrying rate is calculated according to the following formula: the optimal liquid carrying rate (%) is equal to (m2-m1) / m1 * 100%. According to the printing and dyeing method and the ink supply system thereof, the accurate mixing and uniform distribution of colors are realized while the dye consumption is reduced, and the production efficiency is improved.

The invention provides a phase change composite material. The phase change composite material comprises an inner core; the inner core is formed by hollow polymer fibers filled with a phase change material; tensioning 1-3% of graphitized carbonaceous yarn, and spirally winding the graphitized carbonaceous yarn on the surface of the inner core; the hollow polymer fibers comprise at least one of thermoplastic polyurethane fibers, polypropylene fibers, polyvinyl alcohol fibers, polyvinylidene fluoride fibers or polycaprolactone fibers. The invention also provides a preparation method of the phase change composite material, which comprises the following steps: graphitizing the carbonaceous yarn, and winding the graphitized carbonaceous yarn around the inner core to obtain the phase change composite material. The invention further provides application of the phase-change composite material, and the phase-change composite material is particularly applied to heat management, temperature regulation, heat dissipation of electronic equipment, energy storage and conversion equipment or temperature control and maintenance of medical equipment.

The present invention discloses a design method of a cascaded auto-disturbance rejection controller for a ship propulsion permanent magnet motor, comprising the following steps: 1. deriving a mathematical model of a permanent magnet motor considering load disturbance and parameter perturbation; 2. cascading a linear extended state observer and a nonlinear extended state observer to determine the structure of a three-stage cascaded auto-disturbance rejection speed controller; 3. designing an extended sliding mode observer to estimate the motor load torque and compensate it in the cascaded extended state observer; 4. adopting an integral sliding mode surface and a power reaching law to design a nonlinear error feedback control law. The method of the present invention has simple steps, enhances the dynamic performance and load disturbance resistance of the system, and improves the response speed and robustness of the system.

The invention provides a gallium trichloride preparation method, which comprises: S1, mixing gallium-containing waste with carbon, and carrying out preheating treatment to obtain an intermediate; s2, the intermediate is subjected to vacuum melting treatment under the condition that the vacuum degree ranges from 1000 Pa to 3000 Pa, and gallium is obtained; and S3, performing chlorination treatment on the gallium obtained in the step S2 to obtain gallium trichloride. The preparation method of gallium trichloride provided by the invention has the advantages that the steps are simpler and more convenient, the process flow is short, the impurity removal effect is good, gallium trichloride with the purity of 7N-8N can be obtained, and large-scale production or industrial production can be realized.

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 present invention relates to the technical field of offshore oilfield exploitation, and specifically to a method for characterizing the degree of displacement between wells under non-uniform well spacing in offshore oilfields. The method comprises the following steps: applying the DTW algorithm, analyzing the distance between the time series of changes in injected water and the time series of changes in liquid production in the injection and production wells, and calculating the degree of connectivity between the injection and production wells; establishing a typical well group geological model according to the degree of connectivity between the wells, and obtaining the flow field distribution through streamline simulation calculation; calculating the streamline density and streamline intensity between the injection and production wells; calculating the coefficient of characterization of the degree of displacement between wells; and determining the optimal injection and production volume of a single well. The method of the present invention solves the problem that it is difficult to characterize the degree of displacement between injection and production wells in different well groups at sea under the influence of multiple factors, provides a basis for balanced displacement of offshore oilfields, and can greatly improve the recovery rate of offshore oilfields.

The invention discloses a radiotherapy positioner and a preparation method thereof, and belongs to the technical field of medical materials. The radiotherapy positioner is a solid circular ring, a solid cylinder, a hollow circular ring or a hollow cylinder; the solid circular ring, the solid cylinder, the hollow circular ring or the hollow cylinder is composed of a carbon fiber composite material matrix and a heavy metal coating or a heavy metal carbide coating on the surface of the carbon fiber composite material matrix. The radiotherapy positioner has the characteristics of X-ray permeability, no artifacts during examination, strong development, light weight, good stability, good biocompatibility and the like, and can optimize the radiotherapy range, accuracy and use dosage to the greatest extent, so that the target area sketching is more accurate, and the injury of radiotherapy to a patient is reduced.

The invention discloses a building three-dimensional damage detection method, which comprises the following steps of: 1, carrying out image acquisition on a target building by using an unmanned aerial vehicle carried with a visible light imager to obtain a plurality of building images covering the whole target building, and generating a building DSM (Digital Subscriber Model); 2, acquiring a top elevation image of the target building; 3, detecting the elevation change of the target building; 4, detecting the top damage of the target building; 5, detecting side damage of the target building; and 6, visualizing the damage of the target building. The method is simple in steps and reasonable in design, the unmanned aerial vehicle is used for shooting the images of the target building at multiple angles, detection of elevation change, top damage and side damage of the target building is achieved, and overall visualization of damage of the target building is achieved.

The invention provides a hydrofluoric acid-free photovoltaic silicon wafer pickling additive, a pickling solution and application thereof, the additive comprises the following components in percentage by mass: 7-10% of fluoride inorganic salt, 0.1-1.0% of a chelating agent, 0.005-0.01% of a surfactant, 0.1-0.5% of an accelerator and the balance of water, and the fluoride inorganic salt is one or more of potassium hydrogen fluoride, ammonium hydrogen fluoride and ammonium fluoride. By adopting the additive provided by the invention, the silicon wafer can be completely dehydrated after being cleaned without hydrofluoric acid in the pickling process, and the production line efficiency and the yield are not influenced.

The invention discloses an unmanned aerial vehicle base station resource allocation method for a communication perception integrated system. The method comprises the following steps: 1, constructing the communication perception integrated system; 2, acquiring the communication rate of the ISAC base station on the unmanned aerial vehicle to the communication user n and the mutual information of the ISAC base station on the unmanned aerial vehicle to the sensing user m at the t moment; 3, according to the communication rate and the mutual information, obtaining the spectrum efficiency of the communication-sensing integrated system; 4, obtaining a reward score function of ISAC base station resource allocation on the unmanned aerial vehicle; and 5, obtaining a power distribution strategy of the ISAC base station on the unmanned aerial vehicle to the N communication users and the M sensing users. The method is simple in step, the DDPG algorithm and the greedy algorithm are adopted, resource allocation is carried out on the basis of the reward score function formed by the spectrum efficiency, the communication fairness index and the perception fairness index, the system fairness is improved to the maximum extent, and the overall communication and perception performance of the system is improved.

The application discloses a multimedia publicity page promotion method and system, and technical scheme points are as follows: a multimedia publicity page promotion method comprises the following steps: S1, performing promotion analysis: including analyzing publicity purposes and audience groups, determining a network public activity theme, and selecting a network promotion tool; S2, generating and manufacturing publicity pages: according to a result of the promotion analysis, drawing an electronic file and a text page of the publicity pages; S3, publishing the publicity on the network; S4, integrating information after acquisition; S5, feeding back the publicity pages; S6, opening a video conference: uploading an opinion book to the video conference to discuss and acquire a publicity scheme; and S7, secondary publicity. The multimedia publicity page promotion method and system have good publicity page promotion capability, can realize accurate marketing, have the capability of integrating promotion feedback, and the method steps are simple and easy to implement.

The present invention discloses a method for estimating the pose of a weakly textured target based on feature fusion, comprising the steps of: 1. semantically segmenting the RGB image where the target is located to obtain the target pixel mask and the minimum bounding box corresponding to the target; 2. cropping the RGB image using the minimum bounding box; 3. extracting color features using a convolutional neural network; 4. acquiring a depth image; 5. segmenting the depth image and converting it into point cloud data; 6. acquiring point features, local geometric features and global geometric features in the point cloud data; 7. fusing the color features with the point features, local geometric features and global geometric features to obtain target fusion features; 8. inputting the target fusion features into a pose estimation network to output a pose estimation result. The present invention can be effectively applied to pose estimation of weakly textured targets, solves the problem of insufficient consideration of local features in pose estimation during feature fusion, improves the accuracy of pose estimation, and is convenient for popularization and use.

The present invention belongs to the field of oil and gas exploration and development, and specifically relates to a method for identifying seismic attributes of medium-low energy mud diapir development range. The method comprises the following steps: filtering and structural smoothing of original seismic data; extraction and optimization of relevant seismic attribute three-dimensional bodies; QC evaluation of the preferred attribute body reflecting diapir; RGB fusion of the preferred data body after parameter optimization; and judgment and elimination of faults. The method of the present invention can more accurately identify the development range of mud diapir, overcome the problem that mud diapir with weaker active energy is not sufficiently distinguishable from surrounding strata, geophysical characteristics are not obvious, and its development range is difficult to accurately identify, which is of great significance for optimizing the planning and design of new wells, improving the success rate of drilling, and increasing the discovery rate of oil and gas.

An experimental device and method for simulating the spontaneous combustion and extinguishing process of coal in a closed fire area, wherein the experimental device includes a coal body simulation system, a fire monitoring system, a fire extinguishing simulation system and a sewage treatment system, wherein the fire monitoring system includes a chromatograph, a nitrogen source, an oxygen source, and a plurality of thermocouples and a plurality of gas intakes embedded in the coal body and distributed at different positions; the fire extinguishing simulation system includes a fire extinguishing agent source, which is used to provide a gaseous fire extinguishing agent and pass it into the coal body from the bottom of the experimental box, or to provide a solid fire extinguishing agent or a liquid fire extinguishing agent and pass it into the coal body from the top of the experimental box; the sewage treatment system includes a gas sewage treatment subsystem and a liquid sewage treatment subsystem to treat the gas overflowing from the coal body, and to treat the liquid flowing out of the coal body. The present invention is easy to use and operate, can simulate the entire process of spontaneous combustion and extinguishing of coal, and can truly reflect the inhibitory effect of different fire extinguishing materials on different coal bodies.

The utility model discloses a rice seedling raising greenhouse with a temperature control system, which comprises a greenhouse, one end of the greenhouse is provided with a window assembly and an electric cabinet, the window assembly comprises an outer frame arranged on the greenhouse, the inner side of the outer frame is provided with a positioning plate, the top end of the positioning plate is provided with a driving motor, and the driving motor is connected with the electric cabinet. A driving gear is fixed to the output end of the top end of the driving motor in a transmission mode, a rotating rod is fixed to the middle of the outer frame, a rotating table is fixed to the middle of the rotating rod, a rack is fixed to the front end of the rotating table, and a sliding assembly is arranged at the other end of the rotating table and comprises a sliding block and a connector arranged at one end of the sliding block. When the device is used, one end of the window and one end of the fixed frame can deflect towards the interior of the outer frame, the other end of the window and one end of the fixed frame can deflect towards the outer side, compared with an existing structure (the spacing line is the middle of the rotating rod), the device has a novel opening mode, and the attractiveness of the window is improved on the premise that the method and the steps are kept simple.