90results about How to "Easy to implement applications" patented technology

The invention relates to a method and a device for automatically controlling water levels of multiple channel sections. The device comprises a water delivery open channel and a plurality of gates, wherein a water-dividing opening is reserved at a place close to the upstream of each gate; a gate opening and closing mechanism of each gate is connected with a control unit of each gate; and the control units are connected through a network. The control unit comprises a gate-front water level sensor, a gate-rear water level sensor and a gate open degree sensor, wherein the gate-front water level, gate-rear water level and the gate open degree sensors are connected with a low pass filter; the low pass filter is connected with an A / D converter; the A / D converter is connected with a data acquisition unit; the data acquisition unit is connected with an industrial control computer; the industrial control computer is connected with a PLC; and the PLC is connected with the gate opening and closing mechanism. Due to the adoption of upper and lower stream data acquisition, gate and water flow control simultaneously, the method and the device avoid the influences of long time delay and coupling effect of the long-distance large-scale water delivery open channel and give full play to the advantages of the upstream control and the downstream control method in the water level regulation and water quantity regulation.

The invention relates to a method and a system for sending information from a television to a mobile terminal. The method comprises the steps of: processing the information sent from the television to the mobile terminal through a sound wave information generating module, so as to generate an audio code; embedding the audio code into the original television content, and playing through the television; sending the information to the mobile terminal of an audience by utilizing sound; receiving a sound signal through a microphone of the mobile terminal of the audience; and restoring the sent information through sound wave information receiving software in the mobile terminal, and transmitting the sent information to a service processing module for implementing follow-up services, so as to achieve the sending of the information between the television content and the audience. The method disclosed by the invention is implemented through the mobile terminal by utilizing the software; and the content of a played program is subjected to simple information processing at a program source side, and is played by using the current television without hardware transformation and equipment update.

Disclosed is a process for preparing ceftriaxone sodium belonging to compound preparation technical field. Protected by nitrogen, 7-ACT3 reacts with AE-active ester under the action of amine intermediate reactant in a solvent. Then a sodium salt forming agent is added in, and the cefotaxime sodium is obtained after reaction and seedout. The solvent is a mixed solvent composed of alkane halocarbon, ethyl acetate, or acetone and alcohol solvent and water. The solvent dosage is small, and the product yield is high.

The invention provides an optimized and optimally-cutting reactive compensation method and reactive compensation device. The method can judge a control strategy through composite physical quantity of three-phase voltage, three-phase reactive power and power factors to form a capacitor switching strategy of cutting off a capacitor and optimizing and optimally cutting a switching capacitor step by step, and accordingly reactive compensation can be accurately finished. The capacitor switching strategy uses a switching capacitor optimizing and optimally cutting method to optimize the core portion of the reactive compensation method based on work timing of an input capacitor. The optimized and optimal-cutting capacitor switching strategy is simple, practical and easy to achieve, can carry out intelligent control switch to a common compensation capacitor and a divided compensation capacitor, can meet the application requirements and accuracy requirements of reactive compensation of most low-voltage distributing networks and brings convenience to design, debugging, operation and using of a reactive compensation controller.

The invention relates to a noise measuring system for an engine accessory system in a hemi-anechoic room. A load is respectively applied to a power steering pump, an electric generator and an air compressor in an accessory system, thus each accessory is enabled to work under the load, and a measuring result is enabled to be closer to life. The accessory system (3) is arranged on a testing motor (2), the testing motor (2) is arranged on a bench in the semi-anechoic room, the testing motor (2) is connected with a power measurement machine (1) through a transmission shaft, a crankshaft of the testing motor (2) is driven to rotate by the power measurement machine (1), and the accessory system (3) is driven to work by the testing motor (2); and a microphone (10) is arranged around the testing motor (2) , the noise of the accessory system (3) at work is collected by the microphone (10), and the noise is provided to a processing unit for processing and collection. By adopting the noise measuring system, interference brought by combustion noise of the testing motor, noise of induction and exhaust, and mechanical noise of a motor body and the like are eliminated, and the noise of the engine system is measured more accurately.

In a current anti-virus system, a server can receive virus reports from each user terminal node; when the server receives a large quantity of virus reports from different user terminals, the strategy for evaluating and preferably sorting the virus reports becomes a key point of impacting an entire system to improve the network virus resistance. The invention relates to a method for sorting network virus reports, which is used for anti-virus software capable of being adopted in an Internet or Intranet-based network computing environment. In the method, the virus reports submitted by users are sorted comprehensively according to the number of the virus reports and the confidence level of the users; and units who are used for solving virus problems are allowed to utilize sorted network virus report lists, so that the most valuable virus reports can be preferably processed.

The invention discloses a method for preparing cryolite and coproducing soluble glass by using hydrof luorosilicic acid. The method comprises the steps of: adopting phosphoric acid by wet process, phosphate fertilizer and / or hydrof luorosilicic acid which is byproduct of compound phosphate fertilizer to be added to sodium sulfate solution to prepare sodium fluosilicate so as to lead most of impurities such as phosphorus, iron and the like to be distributed to dilute sulphuric acid mother solution for removal; adopting sodium hydroxide to react with the sodium fluosilicate; carrying out filtration washing to obtain sodium fluoride solution; adopting wet filter residue (silica gel) or dried dry filter residue (silica gel) to respectively react with solid sodium hydroxide or sodium hydroxide solution to coproduce soluble glass adopted as an accessory ingredient of phosphorite floatation; and finally adopting the sodium fluoride to react with aluminium sulphate solution to synthesize the cryolite. The invention adopts sodium hydroxide to decompose sodium fluosilicate and the sodium source is rich so as to avoid resupply of sodium in the following synthesis process of the cryolite; the adoption of aluminium sulphate for synthesizing the cryolite can reduce cost and the synthesized cryolite can meet the process requirement of aluminium electrolysis; and sodium sulfate mother solution can be recycled without discharge of wastewater and waste residue.

The invention discloses a system and a method for improving biochemistry and deeply treating sewage by utilizing powdered activated carbon. The system comprises pretreatment equipment, a biochemical tank, a secondary sedimentation tank, a high-density sedimentation tank and a submerged ultra-filtration membrane separation subsystem; the sewage enters the biochemical tank after being treated by the pretreatment equipment and is then conveyed into the secondary sedimentation tank for separation, and an effluent enters the high-density sedimentation tank for sedimentation; one part of the sludge in the high-density sedimentation tank flows back to the high-density sedimentation tank, and the other part is discharged into a sludge concentration tank; the effluent in the high-density sedimentation tank is inputted into the submerged ultra-filtration membrane separation subsystem and is mixed with and separated from the activated carbon in the submerged ultra-filtration membrane separation subsystem; carbon slurry in the submerged ultra-filtration membrane separation subsystem circularly flows back, one part flows back into the biochemical tank, and the other part flows back into the submerged ultra-filtration membrane separation subsystem; part of effluent in the submerged ultra-filtration membrane separation subsystem meets the standard to be discharged or recycled, and the other part is conveyed into a clean water tank for backwashing of the submerged ultra-filtration membrane separation subsystem.

The invention discloses a multi-stall movable charging method and device. The multi-stall movable charging device is characterized by comprising a master control platform, a movable integrated charging power source platform device, a movable platform and a charging pile; the master control platform is provided with a voltage transformer, the movable integrated charging power source platform device is separated from the charging pile, the movable platform is arranged above or on the peripheral ground of the charging pile beside a stall, a connector in abut connection with the charging pile is arranged on one side of the movable integrated charging power source platform device, direct current electricity converted by the voltage transformer is in abut connection with the charging pile through the movable integrated charging power source platform device to output a charging power source, the power supply voltage of the voltage transformer is automatically adjusted according to a configured intelligent chip, and charging voltage is provided for multiple electric cars by the voltage transformer within the range of loads of a power grid. The multi-stall movable charging method and device realize intelligent charging of electric cars, the power grid does not need to be modified, and the multi-stall movable charging device can be used in various medium and small parking lots or underground garages through the existing power grid voltage.

The invention discloses a modified nylon powder coating and a preparation method thereof. The preparation method comprises the following steps of: firstly preparing a polymerization product by performing polymerization reaction on the following main synthetic materials in parts by mass: 50 to 80 parts of caprolactam or nylon 6 resin, 20 to 50 parts of nylon 66 salt, nylon 66 resin or equal mole ratio of hexamethylene diamine and hexanedioic acid, and 0.02 to 1.7 parts of an auxiliary agent; and then preparing the modified nylon powder coating through the processes of extrusion modification, deep cooling crushing and treatment with a powder surface treatment agent. The auxiliary agent comprises an antioxidant, a nucleating agent and a molecular weight adjusting agent. The modified nylon powder coating prepared by the method is lower in melting point, simple in process control and stable in product quality, can partially substitute nylon 11 and nylon 12 powder products, can effectively reduce the using cost of nylon powder, is favorable for application popularization of the nylon powder, and has a great market potential.

The invention relates to an improved preparation technique for Ceftriaxone Sodium, which comprises: with nitrogen protection, in solvent, reacting between 7-ACT and AE-active ester with amine as intermediate; adding benzothiazole as assisting solvent and sodium salt agent, separating and crystallizing to obtain the product. Wherein, the reaction solvent comprises halogenated hydrocarbon of alkane, acetic ester or acetone and alcohol and water; stirring the 7-ACT and AE-active ester till clear, adding assisting solvent of benzothiazole and salt agent; extracting, degerming, filtering, adding insoluble solvent for Ceftriaxone Sodium; when liquid shows turbid, feeding crystal; separating the crystal by insoluble solvent to cefotaxime sodium; cleaning, drying treatment to obtain the product for injection. This invention needs just one-step operation, has good crystallization and short production period, improves product yield, and decreases solvent harm to operation crews.

The invention relates to a technology of a daily-use double-layer ceramic bowl, which belongs to the field of products made of ceramic material, and the daily-use double-layer ceramic bowl comprises a ceramic bowl body and is characterized in that the bowl body comprises an inner layer and an outer layer, the upper edges of the two layers are combined together, support legs are arranged at the outer bottom of the bowl body, and the bowl body is made of industrial ceramics; and the preparation method comprises material preparation, molding and firing, and is characterized in that the molding method by slip casting is adopted for molding, the outer bottom is molding alone, and the outer bottom is combined with the bowl body by adopting the bonding way. The daily-use double-layer ceramic bowl can realize thermal insulation and avoid scalding hands; furthermore, the strength is high, the transportation is convenient, the service life is long, the decoration is convenient, the daily-use double-layer ceramic bowl is healthy and environment-friendly, and the product grade is high; and the preparation method is scientific, reasonable, simple and easy to operate.

The invention discloses a method for performing water purification plant advanced treatment by using a submerged ultrafiltration membrane. The method comprises five steps of adding powdered activated carbon, performing carbon-water premixing, performing activated carbon adsorption and carbon-water separation, performing carbon slurry settling concentration for dehydration and regenerating the powdered activated carbon. The fed water of waterworks is pumped into a carbon-water premixing tank and is uniformly and fully mixed with carbon slurry refluxed out of a submerged ultrafiltration membrane separation tank; then the mixture is put into the submerged ultrafiltration membrane separation tank for performing membrane separation of carbon and water, and a small part of outlet water is reused and is subjected to membrane back flushing; and the carbon slurry in a carbon-water premixing tank is discharged into a concentration tank for concentration, and then is delivered into pressure filtration equipment for dehydration and recovery, and the recovered activated carbon is treated by a baking regeneration activation process for recycling. According to the method disclosed by the invention, the adsorbing effect of the powdered activated carbon on micromolecular organic matters is well combined with a sieving effect of the ultrafiltration membrane on pathogenic microorganism including macromolecular organic matters and bacteria, so that the removal rate of the organic matters is greatly improved, and meanwhile, the powdered activated carbon can be reused after regeneration.

The present invention relates to a method for preparing a spherical carbon-coated lithium iron phosphate positive electrode material through an atomization method. The technical scheme of the present invention comprises: 1, dissolving a lithium salt, an iron salt and a phosphate in water containing a carbon precursor, and uniformly mixing to obtain a clarified solution; 2, adjusting the pH value of the solution; 3, placing the solution in a water bath pot, continuously stirring, and carrying out reflux to obtain a precursor liquid for atomization; 4, atomizing the precursor liquid into small mist droplets, passing through a quartz tube furnace or corundum tube furnace, and collecting the dried spherical lithium iron phosphate precursor by using a powder collector; and 5, placing the spherical lithium iron phosphate precursor into an atmosphere furnace, and carrying out sintering and calcination to obtain the spherical carbon-coated lithium iron phosphate positive electrode material. According to the present invention, the chemical component, the phase component and the particle size of the spherical lithium iron phosphate are effectively controlled, the large current charge-discharge performance and the cycle performance of the lithium iron phosphate are improved, the synthesis process is provided, the production cost is reduced, the product quality is improved, and the method is suitable for industrial implementation application.

The invention relates to a method for surface vulcanization of a spinel nickel lithium manganese oxide positive electrode material. The method comprises the following steps: firstly, dissolving compounds of soluble Li, Ni and Mn into deionized water according to molar ratio, obtaining mixed solution; then, adding a metal ion chelating agent to obtain a gel liquid, drying and grinding to obtain powder, and performing roasting to obtain spinel nickel lithium manganese oxide positive electrode material powder; further dispersing the powder in absolute ethyl alcohol, adding 3-aminopropyl triethoxysilane, performing washing and centrifugal separation after reaction, and obtaining a surface-activated spinel nickel lithium manganese oxide positive electrode material powder after reaction; dispersing the positive electrode material powder and thioacetamide into the absolute ethyl alcohol, regulating a PH value to be 7.5-8.5, performing washing and centrifugal separation after reaction, sintering after drying, and obtaining surface- vulcanized spinel nickel lithium manganese oxide positive electrode material. In the method provided by the invention, surface constituents of the spinel nickellithium manganese oxide positive electrode material are changed effectively through the vulcanization technology, cycle performance and rate capability of the spinel nickel lithium manganese oxide positive electrode material are improved, and the method is easy to be implemented and used in industry.

The invention discloses a multichannel data stream transmission method based on a minimum distance maximization criterion, which is characterized by comprising the steps of designing minimum distance precoding matrixes of a full rank, a rank defect and a rank 1 which can transmit any data streams with a sphere filling lattice theory and a recursive construction thought respectively, and each specific channel achieves that the quantity of candidate precoding matrixes is the same as that of the data streams to be transmitted. Compared with the available relevant design method, the method is higher in universality, lower in error rate performance, concise in construction procedure and lower in engineering achievement cost, and facilitates real-time implementation in new generation broadband wireless and mobile communication systems such as 802.11n, TD-HSPA+ (Time Division-High Speed Packet Access+), TD-LTE (Time Division-Long Term Evolution) and TD-LTE-Advanced.

The invention belongs to the technical field of an electrode material of a lithium ion battery, and relates to an ultrasonic atomization preparation method of a porous hollow spherical ternary positive electrode material. The method is as follows: water soluble lithium, nickel, cobalt and manganese sources and a metal chelating agent are dissolved in the molar ratio of 1-1.2: x : y: z into deionized water, and are stirred in a water bath pot to reflux, and after 8 to 20 hours of stirring, a precursor solution for atomization is obtained, then the obtained mixed solution is atomized into droplets by an ultrasonic atomizer, the droplets are loaded into a high temperature furnace with the help of a vacuum pumping system, the droplets become precursor powder, and finally the porous hollow spherical ternary positive electrode material is obtained by calcination in an air or oxygen atmosphere. The method effectively control the chemical composition, phase composition and particle size of the porous hollow spherical ternary positive electrode material, and the prepared porous hollow spherical ternary positive electrode material has high tap density, uniform particle size distribution, and excellent electrochemical performance, and is suitable for industrialized production.

The invention discloses a wastewater deep treatment system and method. The system comprises an AA / O oxidation ditch, a secondary sedimentation tank, and a powdered-activated-carbon immersed ultrafiltration-membrane reactor, the AA / O oxidation ditch consists of an anaerobic tank, an anoxic tank and an aerobic tank, and the powdered-activated-carbon immersed ultrafiltration-membrane(CUF) reactor consists of a carbon water premixing tank and an immersed ultrafiltration-membrane separation tank. Wastewater of a wastewater treatment plant is treated by a pretreatment device and enters the AA / O oxidation ditch through guide pipes; discharged water of the AA / O oxidation ditch is introduced to the secondary sedimentation tank through pipes and is subjected to solid liquid separation; obtained clear water after the solid liquid separation is introduced to the powdered-activated-carbon immersed ultrafiltration-membrane reactor through guide pipes; and obtained clear water after areaction in the powdered-activated-carbon immersed-ultrafiltration membrane reactor is discharged through guide pipes. The wastewater deep treatment system and method provided by the invention employ a wastewater deep treatment technology combining ''reinforced nitrification and denitrification denitrogenation process'', '' biological activated carbon'' and ''CUF'', so that water quality of the discharged water of the wastewater deep treatment system is stable and can stably reach the discharge standard A of the first grade standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant, and thus the standard improving of wastewater treatment plants is realized.

The invention relates to a system and a method for testing the transmittance of a point source of an optical device. A collimator is fixed at one end of an X-axis of a support structure of the system,a two-dimensional rotary disc is mounted at the other end of the X-axis of the support structure, and a photoelectric theodolite and a to-be-measured optical device are mounted on the two-dimensionalrotary disc. The testing method comprises steps of adjusting a two-dimensional rotary disc to enable an optical axis of an optical device to be parallel to collimator beams, and measuring an opticalpower value at an entrance pupil of the optical device; adjusting the attenuation amount of an optical attenuator; adjusting the photoelectric theodolite to enable the center of the flat-topped optical fiber in the field of view of the telescope to be located in the center of a cross wire; the photoelectric theodolite rotates by theta 1, the two-dimensional rotary disc rotates by -theta 1, the center of the flat-topped optical fiber in the field of view is located in the center of the cross wire again, an optical power value is recorded, and the point source transmittance PST (theta 1) of theto-be-measured optical device at the moment is calculated; the rotation angle of the photoelectric theodolite is continuously adjusted to obtain a series of theta i and PST (theta i), and a PST curveis drawn. The method is advantaged in that the method improves the dynamic range of point source transmittance measurement, and is simple in principle, convenient to operate and easy to implement.

The invention discloses a desk for tracing over red characters. The desk comprises a desk body and a desk top, wherein an opening is formed in the middle area of the desk top; a transparent hard cover plate movably connected with the desk top and capable of being turned upwards is arranged in the opening; the closed cover plate and the surface of the desk top are positioned in the same horizontal plane; a sandwich is arranged under the desk top; a light source which can be freely turned on and turned off is mounted in the sandwich; and the light source is connected with a power supply. The desk has the advantages of completer desk functions, simple structure, reasonable layout and easy implementation, and meets the requirements of modern teaching.

The invention provides a multi-adaptability bicharacteristic multidirectional-rotation rocking chair which comprises a chair seat (1) and is characterized in that the bottom of the chair seat (1) is provided with a rocking disc (2); the bottom of the rocking disc (2) is an arc surface (21); the arc surface (21) is a curved surface formed through swing of an arc line (211) with the radius of R1 by using radius R2; the radius R2 and the radius R1 are greater than the distance between a gravity center G (10) and the support surface; the chair seat (1) is composed of a foot rest (3) and a seat frame (4) positioned on an upper end part, a hole group A, a hole group A1 and a hole group A2 are provided on the upper end part of the foot rest (3), a hole group B which is associated to the seat frame (4) is provided at the lower part of the seat frame (4), so that the horizontal position of the seat frame (4) on the foot rest (3) is variable, and the gravity center G (10) can be adjusted to be close to or superposed with a center line X (20) of the rocking disc (2) . The rocking chair has simple position adjusting structure for gravity center, and is suitable for using by individuals with different postures and is easy to be popularized and applied.

The invention belongs to the technical field of building materials, and particularly relates to an anti-corrosion waterproof cement-based grouting material and a preparation method thereof. The technical key points are as follows: the anti-corrosion waterproof cement-based grouting material comprises the following components in parts by weight: 750-1000 parts of cement, 80-200 parts of a viscosity reducer, 5-30 parts of a modified nano silicon oxide dispersion liquid, 50-150 parts of metakaolin, 50-100 parts of superfine quartz powder, 20-100 parts of an anti-corrosion curing agent, 20-50 parts of a water reducing agent, 1-3 parts of a defoaming agent, 10-30 parts of a shrinkage reducing agent, 900-1100 parts of sand, 160-240 parts of water and 2-4 parts of synthetic fibers. By adopting the nano silicon oxide dispersion liquid, the metakaolin, the shrinkage reducing agent and the anti-corrosion curing agent, the cement-based grouting material with excellent anti-corrosion performance and good waterproof effect can be obtained under conventional curing conditions, and the cement-based grouting material has good economic benefits and practical values.

The invention provides a weak light remote pump amplifier based on double 1480nm laser. The weak light remote pump amplifier comprises an optical transmitter, a power amplifier, an optical receiver and a transmission optical fiber. The optical transmitter transmits an optical signal which enters the transmission optical fiber of 75-100km through the power amplifier to be transmitted to an application facility of which the loss is less than or equal to 30dB. Then the weak optical signal outputted by the application facility firstly enters a passive remote pump amplifier and then is transmitted to the optical receiver through the optical signal transmission optical fiber of 75-100km and the optical amplifier. The passive remote pump amplifier is connected with two 1480nm laser acting as pump sources through two pump transmission optical fibers of 75-100km. The suitable weak optical signal power can be lower to -38dBm, and the signal-to-noise ratio of the optical signal reaching the receiver can be 16dB so that the signal-to-noise ratio requirement of the preamplifier can be met, the relative intensity noise can be -100dB and the requirement of the demodulation technology can be met; and implementation and application are easy.

The invention relates to an improved preparation technique for Ceftriaxone Sodium, which comprises: with nitrogen protection, in solvent, reacting between 7-ACT and AE-active ester with amine as intermediate; adding benzothiazole as assisting solvent and sodium salt agent, separating and crystallizing to obtain the product. Wherein, the reaction solvent comprises halogenated hydrocarbon of alkane, acetic ester or acetone and alcohol and water; stirring the 7-ACT and AE-active ester till clear, adding assisting solvent of benzothiazole and salt agent; extracting, degerming, filtering, adding insoluble solvent for Ceftriaxone Sodium; when liquid shows turbid, feeding crystal; separating the crystal by insoluble solvent to cefotaxime sodium; cleaning, drying treatment to obtain the product for injection. This invention needs just one-step operation, has good crystallization and short production period, improves product yield, and decreases solvent harm to operation crews.

The invention discloses an outdoor gallery type storage and fresh keeping method of fresh ginger. The outdoor gallery type storage and fresh keeping method of fresh ginger comprises the following steps of firstly, digging a bar-shaped gallery under the floor of the flat ground, wherein vent pipes are arranged in the bar-shaped gallery, and a simple shack is built above the bar-shaped gallery; and then, selecting ginger blocks which are tidy in size, good in quality and free from diseases, enabling the selected ginger blocks to be piled in a layered manner in the bar-shaped gallery, and finally, enabling the surface of the ginger on the top layer to be covered with a thermal insulation layer of which the thickness is adjustable. The fresh keeping method disclosed by the invention is simple and easy to operate, not only has the advantages of being energy-saving, reducing consumption, and being low in costs, simple in material selection, labor-saving, time-saving, safe and suitable for use and high in maneuverability, but also is simple and convenient to manage during storage, and long in fresh-keeping time of the fresh ginger. The product quality and the fresh degree of the stored fresh ginger can be completely guaranteed, the rot rate of the fresh ginger is effectively reduced, the storage loss of the ginger blocks is reduced, the added value of the fresh ginger and the income of ginger planters are increased, and the generalization, the popularization, the implementation and the application of the fresh keeping method by the ginger planters are facilitated.

The invention discloses a monitoring method for a field strength and a wireless channel. A power supply, a storage battery, an antenna, a communication transmission network, a field strength and wireless channel fixed monitor and a field strength and wireless channel monitoring center management station are used for realizing the monitoring method. According to the monitoring method, field strength coverage indexes and wireless channel indexes of a base station, a base-station remote station and a wireless relay station can be truly monitored in real time; automatic adjustment and alarming can be carried out in time when the field strength coverage indexes and the wireless channel indexes are changed, thereby ensuring the normal operations of the base station, the base-station remote station and the wireless relay station; and valid communication can be supplied to wireless communication users at any time.

The invention discloses a system and a method for constructing a soil available phosphorus analysis model based on a satellite image, and aims to solve the problems that time and labor are consumed, the cost is high and accurate and comprehensive fertilization cannot be realized when the soil available phosphorus content is used for guiding fertilization. According to the invention, a Spearman sensitive analysis technology and a GA + BP neural network algorithm are adopted, a soil available phosphorus inversion model is established by applying matlab programming and GUI design, pixel-by-pixel fine analysis technologies are carried out by applying multiple parameters such as sensitive wave bands, sensitive wave band mathematical transformation and field soil sample acquisition data, quantitative analysis is carried out on available phosphorus of soil fertilization, and thus obtaining soil available phosphorus content distribution raster data of the target area before sowing; compared with a traditional method, the remote sensing technology is used for processing satellite image data, the Matlab technology is used for completing model construction, the GIS technology is combined for completing correlation and grid vectorization of reflectivity information and soil sample data and guiding fertilization prescription map making, the production cost can be saved, the production efficiency is improved, and the purpose of farmland protection is achieved.

The invention relates to the field of preparation of trans-1,2-dichloroethylene, in particular to a production process of trans-1,2-dichloroethylene, which comprises the following steps: catalytic reaction of acetylene and chlorine under oxygen-free conditions, and the catalyst It is an alkaline earth metal chloride, and the reaction temperature is 80-150°C. The production process of trans-1,2-dichloroethylene provided by the present invention generates 1,2-dichloroethylene by selecting acetylene and chlorine to react under the action of an alkaline earth metal catalyst, the reaction is simple, and the source is wide and cheap, and the production cost It is relatively low, and there is no three-waste discharge at the same time, and it is safe to operate. It is a clean production process. Since the raw materials used are acetylene and chlorine, the atom economy is also high.

The invention provides a movable supporting device for rocket engine assembly. The movable supporting device comprises a base assembly, a supporting frame, bottom frames and pull rod assemblies, wherein the base assembly is provided with a movable space in the length direction, one end of the supporting frame is movably arranged on the base assembly, the other end of the supporting frame is connected to a lifting supporting device body used for supporting a rocket engine so as to support the rocket engine through the lifting supporting device body, the bottom frames are arranged on the two sides of the base assembly in the width direction, the pull rod assemblies are arranged opposite to the grounding ends of the bottom frames, the two ends of the pull rod assemblies are connected to the supporting frame and the bottom frames correspondingly so as to tension the supporting frame, and therefore the supporting stability of the supporting frame is improved. Compared with a traditional supporting device, the movable supporting device has certain flexibility, the rocket engine can be reliably supported, in addition, the rocket engine can also be stably transferred, and therefore the assembling operation space, safety and stability of the rocket engine are greatly improved.