42results about How to "Overcome continuity" patented technology

The invention discloses an ultralow concentration electrochemical formaldehyde sensor which can detect low concentration of 10 ppb, and comprises at least a working electrode, a compensating electrode and a counter electrode, wherein the compensating electrode and the working electrode are positioned on the same working surface and isolated in different spaces, and the space where the compensating electrode is positioned comprises a compensating electrode filter layer for selectively removing formaldehyde. Provided with the parallel compensating electrode which is unlimitedly consistent with the working electrode in characteristic, the formaldehyde sensor eliminates the influence of interference gas and also eliminates a formaldehyde detection error caused by environmental temperature or humidity change, and thereby overcoming the difficulty of low resolving capability caused by too many interference factors when a traditional electrochemical sensor detects low concentration formaldehyde and having low detectability and high selectivity. The sensor also overcomes the defects of complicated operation and incapability of continuous measurement of existing products in markets.

The invention relates to a float type level gauge for on-site indication, which comprises a float, a graduated scale and a noctilucence wheel, and is characterized by further comprising a conducting or magnetic conducting guide rail, wherein the noctilucence wheel comprises an insulating box, a light source, two longitudinally arranged magnetic shafts or metal shafts, and two conducting wires for supplying power to the light source; for a magnetic float type level gauge, the noctilucence wheel also comprises a steel magnet; under the magnetic action, the magnetic shafts or the metal shafts, along with upward and downward movements of the float, move upwards and downwards along the guide rail so as to indicate the liquid level on-site accurately in time; or a resistance wire is enwound on the guide rail, and the resistance value of a conducting loop comprising the guide rail, the magnetic shafts or the metal shafts, the conducting wire, the light source and the like is measured to acquire a corresponding liquid level value so as to achieve the continuous long-distance transmission of liquid level data. The float type level gauge can also comprise a pulley wheel, a counterbalance, a connecting rope or a connecting belt to balance the noctilucence wheel. The float type level gauge has the significant characteristics of simple structure, clear and obvious on-site indication, flexible and accurate measurement and continuous long-distance signals.

The invention belongs to the technical field of fracturing construction mechanization, and particularly provides a full-automatic liquid adding device for fracturing construction and an adding calibration method. The full-automatic liquid adding device comprises a prying frame, an engine, a transfer case, a hydraulic device, a liquid adding pump, a metering calibration tank, a liquid additive tank, a liquid supply pump and a control unit, wherein the input ends of the engine, the transfer case and the hydraulic device are sequentially connected; the output end of the hydraulic device is connected with the liquid supply pump and the liquid adding pump; the liquid supply pump is connected with an inlet of the liquid additive tank; an outlet of the liquid additive tank is sequentially connected with inlets of the metering calibration tank, the liquid adding pump and the liquid additive tank; the control unit is electrically connected with the engine, the transfer case, the hydraulic device, the liquid adding pump, the metering calibration tank, the liquid supply pump and the liquid additive tank; and the current situation that in the fracturing construction process, the liquid additive adding precision is large in adding difficulty and discontinuous is avoided, the mechanization and automation degree of fracturing construction is improved, meanwhile, the construction quality and potential safety hazards are effectively eliminated, and the construction success rate is increased.

The invention relates to a float type level gauge for high-temperature high-pressure or high-temperature low-density medium, comprising a float chamber, a float and a graduated scale; the float type level gauge is characterized in that: the float is a hollow spherical shape; the float type level gauge further comprises a guide rail and a magnetic connector, a magnetic steel or a disc-shaped magnetic steel is arranged in the magnetic connector and forms magnetic attraction with a magnetic ball body in the float made of the nonferrous magnetic material or the disc-shaped magnetic steel the float made of the nonferrous magnetic material, a metal shaft laterally spanned at two side walls of the magnetic connector is exposed to two side walls and is attached to the guide rail by magnetic force, and the metal shaft can move up and down along the guide rail under the driving of the magnetic force; in addition, resistance wires are wound on the guide rail to measure the change of the resistance value of a return circuit, so as to realize continuous remote transmission of a signal. The float type level gauge for high-temperature high-pressure or high-temperature low-density medium solves the difficult problem of liquid level measurement in the high-temperature high-pressure or high-temperature low-density medium and has high measuring precision; in addition, the structure is simple, the usage is convenient, the manufacturing and maintaining cost is low and the application is wide.

The invention provides a functionalized polyethylenimine-grafted porous nano-fiber adsorption material and preparation thereof. The functionalized polyethylenimine-grafted porous nano-fiber adsorption material is characterized by being prepared from porous polyacrylonitrile nano-fibers; the porous polyacrylonitrile nano-fibers are grafted with functionalized polyethylenimine after being hydrolyzed. After the porous polyacrylonitrile nano-fiber material is subjected to graft modification by using the functionalized polyethylenimine, the carbon dioxide adsorption performance and adsorption and desorption cycling stability of the porous polyacrylonitrile nano-fiber material are greatly improved; therefore, the porous nano-fiber high-efficient adsorption material with certain flexibility and strength can be prepared, and has great utilization potentiality in the field of adsorption.

The invention discloses a double-stage heat storage trough type solar thermal power generation system. The system comprises a double-stage trough type solar heat collection field, a double-stage heat storage sub-system and a power generation sub-system. The double-stage trough type solar heat collection field comprises a high-temperature heat collection field and a low-temperature heat collection field and is used for receiving and collecting solar radiation energy. The high-temperature heat collection field is used for converting the collected solar radiation energy into heat of high-temperature heat conducting oil. The low-temperature heat collection field is used for converting the solar radiation energy into heat of low-temperature heat conducting oil. The double-stage heat storage sub-system comprises a high-temperature heat accumulator and a low-temperature heat accumulator. The high-temperature heat accumulator is used for storing the high-temperature heat conducting oil output by the high-temperature heat collection field. The low-temperature heat accumulator is used for storing the low-temperature heat conducting oil output by the low-temperature heat collection field. The power generation sub-system is used for converting the heat of the heat conducting oil into steam, converting the steam into electric energy and outputting the electric energy. By using the system disclosed by the invention, a problem of reduction of heat collecting efficiency resulted from high average heat absorption temperature of a mirror field is resolved; furthermore, problems of high high-temperature resistance performance of the mirror field to the conducting oil, high investment of the conducting oil and high power generation cost are resolved.

The invention provides a supercritical water oxidation treatment system and a supercritical water oxidation treatment system process for high-concentration dyeing sludge. After the high-concentration dyeing sludge is ground, the particle sizes of insoluble particles are reduced, and high-flow-speed suspension conveying can be realized; the sludge is further subjected to pyrohydrolysis, cell walls are broken and the viscosity is remarkably reduced; the sludge can be stably conveyed through a high-pressure diaphragm pump and enters into a heat exchanger for preheating, so that the required temperature is reached; subsequently, the sludge and oxygen jointly enter into an inlet in the upper part of a reactor, materials completely react in the up-down flowing process, organic matters are degraded and inorganic salts are separated out; the inorganic salts are secondarily dissolved by the cooling of a small amount of reacted clean fluid introduced from an inlet in the upper part of a third heat exchanger and sludge at the inner pipe side of a fourth heat exchanger; materials flow out of a cone base at the lower part of the reactor for heating soften water to generate steam and preheating the materials; cooled and reacted fluid is decompressed through coarse adjustment of a capillary step-down transformer and fine conditions of flow; decompressed fluid is separated through a pipeline filter to obtain a solid which is finally collected into a liquid collecting tank.

The invention relates to a method for producing polyacrylonitrile-based carbon core, with high conductivity, via chemical deposition method, wherein the invention has high strength, high conductivity and controllable diameter; and the method is CVD method. The production comprises: preparing the PAN spinning solution with one-dimension high-conductivity carbon; preparing original fiber with spinning solution; crosslinking in oxygen gas, to prepare the pre-oxidized fiber; carbonizing in inertia gas, to prepare the carbonized fiber; graphitizing in inertia gas, to prepare the graphitized carbon corn. The invention can improve the conductivity of PAN-based carbon fiber; and since the anti-tension strength and flexible modulus of one-dimension high-conductivity carbon are higher than PAN-based carbon fiber, it can improve the strength of PAN-based carbon fiber to improve the treatment property of CVD method.

The invention discloses a method and system for removing the fog effect from an image rapidly, a terminal and a storage medium, the method comprise the steps of: optimizing a dark channel image with maximum filtering and guiding filtering after a sky area and a non-sky area are divided by OTSU, and determining a first transmittance according to the optimized dark channel image; adjusting the firsttransmittance by adopting an adaptive parameter adjusting method to obtain a second transmittance; according to the first transmittance and the second transmittance, removing the fog effect from thesky area and the non-sky area according to an atmospheric scattering model to obtain a fog effect removed image; adjusting the hue of the fog effect removed image by CLAHE. The system comprises an acquisition module, a division module, an optimization module, an adjustment module, a fog effect removing module and a hue adjusting module. According to the method and the system for removing the fog effect from image rapidly, the terminal and the storage medium, fog effect removing process of the image having the fog effect can be realized effectively, the defogging effect is good, and the processing operation efficiency is high. The method can be applied to the field of image processing.

The invention discloses a bed-parallel drilling slot pressure relief permeability increase method which includes the steps: (1) performing construction on bed-parallel gas extraction drilling by the aid of a high-pressure hydraulic slotting device to form a drilled hole according to bed-parallel gas extraction drilling design requirements; (2) leading high-pressure water into the high-pressure hydraulic slotting device without withdrawing a drill to rotatably and circumferentially cut coal to form a disc-shaped slot; (3) withdrawing the drill after the disc-shaped slot is formed, and radiallycutting the coal without rotating a drill bit and a drill rod to form a radial slot; (4) repeating the step (2) and the step (3), and forming a plurality of disc-shaped slots and a plurality of radialslots in the same drilled hole; (5) repeating the step (1) to the step (4), and performing drilling and slotting on the other bed-parallel drilled holes. According to the method, horizontal and vertical stress of a coal layer is reduced, drilling gas extraction concentration and flow is improved, the bed-parallel drilling number of a working surface is decreased, and the method is simple and convenient to operate.

The invention belongs to the technical field of water quality remote sensing monitoring, and particularly relates to a quantitative inversion method for reservoir water quality parameters based on aerial hyperspectral data. The quantitative inversion method comprises the following operation steps: (1) acquiring and pre-processing aerial hyperspectral data; (2) acquiring water quality parameter data; (3) acquiring and pre-processing water surface spectral data; (4) analyzing correlation between the water quality parameters and the water surface spectral data; (5) constructing a hyperspectral inversion model of water quality parameters; (6) outputting an inversion result of water quality parameters; (7) verifying the inversion result of water quality parameters. The method combines aerial hyperspectral remote sensing with water quality monitoring, can overcome shortcomings such as low efficiency, large investment and discontinuous data in traditional field sampling and analysis methods,and obtains the model with simpleness, high efficiency and high accuracy, convenience to continuously monitor water quality parameters in fixed areas and wider application scopes.

The invention relates to a continuous production method of powdery and granular water-soluble ammonium polyphosphate. The method comprises steps as follows: 1) prepolymerization: a phosphorus source and urea are added to a prepolymerization device respectively and react at the temperature of 60-140 DEG C for 2-10 min, and a liquid material is obtained; 2) thermal polymerization and cooling: the liquid material is added to a belt type polymerizer provided with a heating zone and a cooling zone at a constant speed, and a solid material is obtained through heating, polymerization, cooling and curing sequentially; 3) crushing: powdery and granular water-soluble ammonium polyphosphate is obtained after the solid material is crushed. Compared with the prior art, the prepared viscous liquid material with proper flowability is prepared firstly, then, the liquid material sequentially passes by the heating zone and the cooling zone with movement of a driving belt, the solid material is obtained, continuous production of ammonium polyphosphate is realized, the problems such as the difficulty in continuous discharge, difficulty in crushing and the like in a conventional ammonium polyphosphate production process are solved, the production efficiency is high, and the product performance is easy to control.

The invention provides a paraffin sectioning method for peanut seeds. The method includes the steps of 1) material selection; 2) fixation by glutaraldehyde 5%-10% in concentration; 3) dehydration: dehydrating by ethanol 80% in concentration for 50min, ethanol 95% in concentration for 45min and ethanol 100% in concentration for 45min and repeating each gradient for one time; 4) transparency: treating by ethanol 100% in concentration for 20-30min, and treating by dimethylbenzene for 15-25min twice, wherein the volume ratio of the dimethylbenzene to the ethanol is 1:1; 5) paraffin permeation by a direct paraffin permeation method, embedding and sectioning; and 6) deparaffinage, rehydration, hematoxylin-eosin redyeing, dehydration, transparency and sealing. The method is capable of well fixing cellular tissue of the peanut seeds, complete and continuous in sectioning, free of cavities, simple to operate, applicable to all peanut varieties and convenient to popularize and apply, and section thickness can reach 7 micrometres.

The invention discloses an LED (Light-Emitting Diode) display module and an LED display screen. The LED display module comprises a base plate and one or a plurality of groups of RGB (Red Green Blue) LED chips packaged on the front face of the base plate through packaging glue, and further comprises a signal data acquisition module and a signal processing module which are electrically connected, and the signal data acquisition module is arranged on the base plate or is directly connected with anodes and cathodes of the LED chips. The LED display screen disclosed by the invention is formed by splicing the LED display modules; the LED display module and the LED display screen disclosed by the invention overcome the defects that the junction temperature detection of the LED chips is inaccurate and on-site real-time continuous monitoring and prewarning of LED products cannot be realized, and have the advantages of accurate temperature detection and good detection real-time property.

The invention provides a cable on-line monitoring device for wireless transmission, belongs to the technical field of electric power systems, and particularly relates to the cable on-line monitoring device for wireless transmission. Measured signals are extracted through current sensors, amplified and filtered through amplifying and filtering circuits, and transmitted to a singlechip through sampling circuits, and the singlechip can assemble the signals into a fixed message format for transmission, so that the defects such as long measurement period, large measurement workload, less measurement data, no continuity and the like in the prior art can be effectively overcome.

The invention relates to a continuous production device of powdered and granulated polyphosphate fertilizer. The device comprises a urea conveying unit, a phosphoric acid conveying unit, a phosphate conveying unit, a pre-polymerizer, a belt type polymerizer, a tail gas treating unit and an aftertreatment unit; urea, phosphoric acid and phosphate which are conveyed by the urea conveying unit, the phosphoric acid conveying unit and the phosphate conveying unit respectively are mixed in the pre-polymerizer to perform prepolymerization reaction to obtain viscous materials with flowability, the materials sequentially completes heating polymerization and cooling solidification in the belt type polymerizer, and the materials are crushed in the aftertreatment unit to obtain the powdered and granulated polyphosphate fertilizer. Compared with the prior art, the device can realize continuous production of the powdered and granulated polyphosphate fertilizer, solves the problems that the polyphosphate is difficult to discharge continuously and difficult to crush in the conventional production process, has high producitivity and high production efficiency, has product performance which is easy to control, and can meet the development requirement of the modern agriculture on the novel fertilizer.

The invention relates to a solid household refuse pyrolysis and gasification power generation device. The solid household refuse pyrolysis and gasification power generation device is characterized by comprising a feeding tank (1), a magnetic separation conveying belt (2), a pulverizer (4), a spiral feeding machine (7), a gasifier (8), a cyclone removal device (21), a pressurizing induced draft fan (22), a water seal type dust removal explosion prevention device (23), a secondary decoking and cooling tower (24), a ternary decoking and cooling tower (25), a gas test fire head (26), a gas storage cabinet (31), a gas turbine generator (32) and a dust remover (33) which are serially connected with one another by pipes. The solid household refuse pyrolysis and gasification power generation device is high in universality of household refuse; requirements on household refuse composition on original refuse treatment are low; and complicated original refuse treatment procedures are reduced. The solid household refuse pyrolysis and gasification power generation device is simple to operate and use, stable in thermal efficient, high in gas yield and high in safety, and is harmless treatment complete equipment which can treat household refuse harmlessly, and further can carry out gasification by the household refuse secondarily.

The invention relates to a satellite optical fiber compass system and a combined navigation method thereof. Its technical characteristics are: the system includes two GNSS antennas, a satellite compass unit and an optical fiber compass unit, and the two GNSS antennas, satellite compass units and optical fiber compass units are connected in sequence Together; the integrated navigation method uses satellite direction finding information and fiber optic gyroscope information for error compensation and attitude calculation, and at the same time adds polar region processing design to obtain high-precision, high-reliability ship heading and attitude information. The invention is reasonable in design, it combines the advantages of satellite direction finding and optical fiber gyroscope, learns from each other, has the characteristics of high precision, fast start-up, convenient use, etc., can realize all-weather, full-latitude direction determination and attitude determination, and helps to ensure the navigation of ships Safety.

The invention belongs to the technical field of macromolecular materials, and relates to a nitrogen-phosphorus-silicon modified graphene halogen-free flame retardant polymer composite material and a preparation method thereof, wherein the composite material is prepared from the following substances in parts by weight: 60-90 parts of a polymer, and 10-40 parts of a nitrogen-phosphorus-silicon modified graphene flame retardant. All the components are weighed according to the weight percentage and are mixed uniformly, and then the mixture is added into a twin-screw extruder, melted and mixed andthen subjected to injection molding into corresponding sample strips by an injection moulding machine, or the mixture is melted and blended by an internal mixer and is subjected to compression moulding forming by a mould with a certain size on a plate vulcanizing machine, or a method of solidifying moulding by a curing agent is adopted. The nitrogen-phosphorus-silicon modified graphene halogen-free flame retardant polymer composite material provided by the invention has the advantages of high charring property, and excellent flame retardancy and thermal stability, and can be applied to flame retardancy of materials such as electric cables, automobiles and packages.

The invention discloses a high-density aluminum silicate fiberboard and a production method thereof. The production method of the high-density aluminum silicate fiberboard comprises the steps as follows: in the advancing process of a fiber layer, sequentially and continuously gluing the fiber layer, removing surplus glue solution and molding the fiber layer by extrusion to form the fiberboard. Thus, links such as pulping, pumping, mold forming, demolding and patching are omitted, the defects of large water consumption, failure of continuous forming and the like are overcome, the high-density aluminum silicate fiberboard is obtained through extrusion forming, and automatic and continuous production can be realized, so that problems of complex production process, large water consumption, failure of continuous production and the like are solved.

The invention provides a regional PM2.5 remote sensing inversion model fusing fine particulate matter concentration data. PM2.5 product data of MASINGAR is introduced into an existing basic model to serve as a newly added prediction factor; space-time matching is performed on the newly added prediction factor, the prediction factor in the basic model and the foundation observation data; a linear regression coefficient of each prediction factor including the increased prediction factor is calculated in combination with ground observation data; an improved model which is simultaneously associated with the prediction factor of the basic model and PM2.5 product data of MASINGAR is established by using the calculated linear regression coefficient; the improved model is used for estimating the PM2.5 concentration of the earth surface, PM2.5 concentration data obtained through calculation is more accurate than concentration data obtained only based on a basic model and is also more accurate than PM2.5 product data of MASINGAR additionally referenced, and the defects that foundation observation data is scattered and discontinuous are overcome.

The invention discloses a method for processing underground continuous wall collapse holes. the method comprises the following steps: step 1, determining positions; step 2, drilling; step 3, observingthe inner condition of the hole collapse area; step 4, step five, sixthly, cleaning soil and residues in the hole collapse area; seventhly, observing whether the soil and residues in the hole collapse area are cleaned or not; eighthly, backfilling the hole collapse area; ninthly, detecting the backfilling effect after the concrete is formed. According to the invention, the hole is drilled in thehole collapse area, and the condition of the hole collapse area is observed in the drilling hole., and the soil body in the hole collapse area is cleaned through high-pressure water, and the concreteis recycled from the drilled hole by the aid of the concrete, the problem that the continuity of the ground connecting wall is damaged and difficult to process and repair due to the fact that the surrounding loose soil body collapses in the grooving process of the underground continuous wall is overcome., the construction process is simple, the construction period is short, and the disturbance ofthe built structure is small., and the quality problem of the wall trenching construction process can be effectively treated., the construction quality of the ground connecting wall is improved, and the smooth proceeding of the ground connecting wall construction is guaranteed.

The invention relates to the technical field of blood pressure detection and relates to a blood pressure automatic measuring device and method based on digital control. The measuring device comprises a volume pulse wave acquisition module, a blood pressure acquisition module and a processing module. The volume pulse wave acquisition module is used for acquiring volume pulse waves of a measured object and processing the acquired volume pulse waves to acquire pulse oximeter signals. The blood pressure acquisition module is used for acquiring blood pressure information of the measured object regularly and processing the acquired blood pressure information to acquire blood pressure digital signals. The processing module comprises a first processing unit and a second processing unit. The first processing unit is used for receiving and processing the blood pressure digital signals and transmitting the blood pressure digital signals to the second processing unit, and the second processing unit is used for extracting multiple feature points of the pulse oximeter signals and jointly carrying out fitting operation on the feature points and the blood pressure digital signals to establish a blood pressure parameter measuring model. The measuring method is achieved through the measuring device. Blood pressure is automatically and continuously measured well.

The invention discloses a space navigation high-speed cable assembly assembling and connecting method. The method comprises the following steps of manufacturing a shielding braided sleeve pipe according to structural dimensions of a space navigation kilomega star stranding wire and an insulating module; performing crimping on the wire and a contact part and then mounting in the insulating module; mounting the wire and the insulating module into the shielding braided sleeve pipe; riveting and pressing a wire shielding braided layer and a grounding wire on the shielding braided sleeve pipe; mounting the shielding braided sleeve pipe into a shell, and crimping the grounding wire in a grounding groove; and mounting the wire into an electric connector, and then performing encapsulation and curing by encapsulation adhesive. By adoption of the method, the wire is riveted and pressed at one end of the shielding braided sleeve pipe while the other end is arranged on the insulating module in a sleeving manner and mounted in the shell, so that the problems of discontinuous shielding and relatively high crosstalk in the conventional assembling and connecting mode can be solved; and by virtue of the encapsulation adhesive, the shielding braided sleeve pipe and the electric connector can be cured, so that the optimal insulating effect of the cable assembly can be achieved, the application requirement of the space navigation environment can be satisfied, and the shortcomings of low transmission rate and relatively low stability of the conventional assembling and connecting mode can be overcome.

The invention discloses a device by utilizing a knob type digital coding switch for switching audio files. The device comprises a central processor module, a digital signal processing module, a power module, and a memorizer used for storing the audio files. The central processor module is connected with the digital signal processing module, the digital signal processing module is connected with the memorizer used for storing the audio files, and the power module is respectively connected with the central processor module and the digital signal processing module. The device further comprises the knob type digital coding switch for switching the audio files. The knob type digital coding switch is provided with a first output pin and a second output pin, and the first output pin and the second output pin are respectively connected with the central processor module. The device by utilizing the knob type digital coding switch for switching the audio files has the advantages of being simple and convenient to operate, and quick in switching speed.

Disclosed are a construction device for an underground anti-seepage curtain and a construction method. A wall body formed by mutual lap joint of groove sections and grouting or mixing piles is poor incontinuity and not strict in anti-seepage performance, the lap joint process of the piles is complicated, and partial lap joint pile materials are repeated and wasted. The construction device is composed of a sawing and drilling machine and a sawing and drilling rod (17), the lower portion of a driving drill rod (6) on the sawing and drilling machine is in threaded connection with the sawing anddrilling rod, the outer surface of the sawing and drilling rod is annularly provided with a set of cylindrical structures of sawteeth (18) at equal intervals, the sawteeth are arranged counterclockwise and inversely spirally, the distance between every two adjacent sawteeth up and down is 5-15 cm, and the included angle between the sawteeth and the horizontal plane is 30 degrees. The constructiondevice and the construction method are used for the underground anti-seepage curtain.

The invention discloses a high-resolution remote sensing building extraction method combining semantic segmentation and edge detection, and belongs to the technical field of remote sensing image target extraction. The method comprises: firstly, by adopting a semantic segmentation network and a deep edge detection network, predicting a building roof surface and an edge graph respectively; then, denoising and skeleton extraction are carried out on the building edge graph; on the basis, in combination with a building roof surface prediction map, carrying out deburring and broken line repairing processing on the building edge map; and finally, vectorizing the building edge graph to obtain a building roof contour extraction result. According to the method, the problem that the building edge in the deep convolutional neural network model prediction map is discontinuous and not closed can be solved, the extraction precision of the building edge of the high-resolution remote sensing image is improved, and the method is good in performance and wide in applicability in extraction of roof forms of different types of buildings.

The invention relates to a flexible metal hydroxide nanofiber material and a preparation method and application thereof.The preparation method of the flexible metal hydroxide nanofiber material comprises the following steps that 1, an inorganic precursor is dissolved in a solvent, then a coordination protective agent is added, and ligand protection type low-branching-degree linear inorganic sol is obtained through sufficient stirring; 2) controlling hydrolysis and polycondensation of the inorganic precursor to prepare linear inorganic spinning sol with high polymerization degree and low branching degree; (3) preparing gel nanofibers from the linear inorganic spinning sol by adopting a temperature / alkali steam assisted spinning process; and 4) carrying out ultrasonic-assisted aqueous alkali treatment on the gel nanofiber, and then cleaning and drying the gel nanofiber. Compared with the prior art, the material disclosed by the invention consists of a large number of nanofibers with nanoscale diameters and a length-diameter ratio of more than 1000, has the advantages of large specific surface area, rich and adjustable pore structure, multiple active sites, capability of being independently used, simplicity and convenience in recovery after use and the like, and greatly widens the application field of the metal hydroxide material.

The invention discloses a novel mobile aquaculture monitoring system, and belongs to the technical field of aquaculture monitoring. The system includes a physical link perception layer, a network datatransmission layer, and a data analysis, processing and application layer. The physical link perception layer is used for cruising in a water area and collecting and transmitting water area monitoring data to the network data transmission layer; the network data transmission layer is used for conducting data segmentation and transmission toward an upper computer and storage in corresponding datatables. The data analysis, processing and application layer is used for data display, control command sending, and monitoring result and terminal transfer. The device can continuously monitor the water condition at any point in a water area in real time, and has low cost, high operability, accurate monitoring data and high intelligence.

The invention provides a remote sensing image cultivated land parcel extraction method combining edge detection and multi-task learning. The method comprises the following steps: S1, performing preprocessing operation on a high-resolution remote sensing image of a research area; s2, based on a multi-task learning framework, performing high-level image feature extraction of the land parcel boundary by setting a task for constraining the land parcel boundary and the shape; s3, the problems of discontinuity and non-closure existing in plot boundary extraction are solved by integrating multi-scale image edge information and high-level semantic boundary information; s4, self-adaptive adjustment of different task weights is achieved based on the same variance uncertainty theory; s5, performing model training and fine tuning based on different optimizers; s6, performing sliding window prediction and seamless splicing on the remote sensing image, and improving the efficiency of extracting the large-area cultivated land parcels; according to the method, the problems of discontinuous and unclosed boundary of the traditional convolutional neural network in cultivated land parcel extraction can be solved, and the geometric accuracy of cultivated land parcel extraction is effectively improved.