平板电脑保护套

Data point multiplication operation method for secure multi-party calculation and electronic equipment

The invention discloses a data point multiplication operation method for secure multi-party calculation and electronic equipment. The method comprises the following steps: a first party holds a data vector x, and a second party holds a data vector y; the first party generates a public key pk and a private key sk, performs homomorphic encryption on the data vector x by adopting the public key pk to obtain an encrypted data vector X, and sends the public key pk and the encrypted data vector X to the second party; the second party generates a random number vector z, performs homomorphic encryption on the data vector y and the random number vector z by adopting a public key pk to obtain an encrypted data vector Y and an encrypted random number vector Z, calculates a vector R = X circle Y + Z, and sends the vector R to the first party; the first party adopts the private key sk to decrypt the vector R to obtain a vector r, the sum (r) of all data in the vector r is calculated, and the sum (r) ...

Monitoring self-cleaning system and method based on Internet

The invention provides a monitoring self-cleaning system and method based on the Internet, and the system comprises a detection module, an image processing module, a control module, an installation frame assembly, a camera assembly and a self-cleaning module, the detection module is in communication connection with the image processing module and the control module, and the self-cleaning module is in communication connection with the image processing module and the control module. The detection module is used for detecting the operation state of the camera assembly; the image processing module is used for analyzing an image shot by the camera assembly; the control module is used for controlling the camera assembly and the self-cleaning module; the mounting frame assembly is used for fixing the camera assembly and the self-cleaning module; the camera assembly is used for shooting images; the self-cleaning module is used for cleaning the camera assembly so as to solve the problem that potential ...

Serum-free medium for human umbilical cord mesenchymal stem cells and application of serum-free medium

The invention discloses a serum-free culture medium for human umbilical cord mesenchymal stem cells. The serum-free culture medium comprises a human mesenchymal stem cell in-vitro proliferation culture medium and cell culture auxiliary factors added into the human mesenchymal stem cell in-vitro proliferation culture medium. The cell culture auxiliary factor is added to replace serum to be used in a differential culture medium, so that the problems that serum chemical components are not clear, components of different batches of culture media are unstable, pollution of pathogens such as viruses easily exists, and the cost is high are solved. Meanwhile, by adopting the serum-free culture medium with clear cell chemical components provided by the invention, in in-vitro proliferation, the proliferation efficiency can be improved, the cell differentiation capability can be maintained, and the cell production stability can be improved.

Pneumatophorus japonicus dark meat enzymolysis antibacterial peptide as well as preparation method and application thereof

The invention discloses a mackerel dark meat enzymolysis antibacterial peptide and a preparation method and application thereof, the antibacterial peptide is characterized in that the amino acid sequence of the antibacterial peptide is Arg-Ser-Cys-His and/or Lys-Ser-Cys-Gly, and the preparation method comprises the following steps: adding deionized water with the mass 2-4 times that of skimmed mackerel dark meat into the skimmed mackerel dark meat until the pH is 7-11, then adding trypsin and bacillus licheniformis protease for enzymolysis, filtering, washing, and drying to obtain the mackerel dark meat enzymolysis antibacterial peptide. Carrying out heat preservation and enzyme deactivation, centrifuging, and taking supernate to obtain crude enzymolysis liquid; c-terminal endo-bienzyme cysteine protease ArgC and serine protease LysC are added into the enzymolysis crude liquid for enzymolysis, centrifugation is performed after heat preservation and enzyme deactivation, an upper-layer enzymolysis ...

Flexible synthetic ammonia preparation system and process

The invention relates to the technical field of synthesis and preparation of ammonia, in particular to a flexible synthetic ammonia preparation system and process, which comprises a compression unit for receiving and compressing raw material gas, a gas storage unit for buffering and supplementing gas, and an ammonia synthesis unit for synthesizing ammonia and cooling and separating ammonia, the freezing unit is used for providing cooling capacity for the ammonia synthesis unit; and the waste heat power generation unit is used for generating power. The influence of upstream system load fluctuation is reduced through the gas storage unit, so that the synthetic ammonia preparation system operates stably; gas is supplemented through the gas storage unit, and a supplementary gas compressor does not need to be arranged; the expansion generator utilizes expansion gas of the gas storage unit to generate electricity and recover high-pressure gas potential energy. The ammonia separation temperature ...

Optimized dispatching method and device for wind-light-water combined power generation and computer equipment

The invention provides an optimal scheduling method and device for wind-light-water combined power generation and computer equipment, and the method comprises the steps: obtaining wind power historical data, wind power prediction data, photovoltaic historical data and photovoltaic prediction data of a wind-light-water complementary energy base, and carrying out the optimal scheduling of the wind-light-water combined power generation according to the wind power historical data and the photovoltaic historical data; a wind-solar power deviation probability distribution model is constructed, the wind-solar power deviation probability distribution model is used for indicating wind power prediction deviation data and photovoltaic prediction deviation data, and the wind power prediction data, the photovoltaic prediction data and the sum value of the wind power prediction deviation data and the photovoltaic prediction deviation data are determined as target random variables; the optimization scheduling ...

Batch hidden query method and device and storage medium

The embodiment of the invention discloses a batch hidden query method and device and a storage medium, and the method comprises the steps: executing cuckoo hashing on first primary key data of to-be-queried feature data, and executing an oblivious pseudo-random function with a data party having second primary key data and corresponding feature data, generating a decryption key corresponding to each piece of first primary key data through XOR operation based on the curve data sent by the data party and an oblivious random number generation function agreed by the data party and the data party; a data pair sent by the data party is obtained, and the data pair is generated after the data party uses a random number generated when the casual pseudo-random function is executed, an encryption key corresponding to each piece of second primary key data is generated through XOR operation, and the second primary key data and the feature data corresponding to the encryption key are encrypted through ...

ADJUSTMENT DEVICE FOR VERTICALITY OF FAST AXIS OF COMPOUND WAVE PLATE AND ADJUSTMENT METHOD THEREFOR

Disclosed are an adjustment device for the verticality of a fast axis of a compound wave plate and an adjustment method adopting this device. The adjustment device comprises a polarized light source (1) and a feedback control system (6). Parallel polarized light emitted from the polarized light source (1) successively passes through a first rotary table (2), a second rotary table (3), a polarization analyzer (4) and a photodetector (5) which are arranged on the same transmission shaft. The first rotary table (2) is connected to a first electric motor (7), and the second rotary table (3) is connected to a second electric motor (8). The feedback control system (6) is connected to the photodetector (5), the first electric motor (7) and the second electric motor (8) to realize the collection and analysis of light current data and to feed back and control the rotation states of the first electric motor (7) and the second electric motor (8). The first rotary table (2) and the second rotary table ...

Synthesis ammonia hot standby process and synthesis tower

The invention relates to the technical field of synthesis and preparation of ammonia, in particular to a synthetic ammonia hot standby technology and a synthetic tower, the structure of the synthetic tower is optimally designed, the temperature in the synthetic tower can be independently controlled through an outer hot standby layer and an inner hot standby layer, and hot standby of the synthetic tower is achieved. According to the hot standby process provided by the invention, the temperature in the synthesis tower can be kept uniform in an ammonia production system which is frequently stopped and is kept above the activation temperature of a catalyst, and the ammonia production working condition can be quickly reached and the ammonia production operation is started when the ammonia production system needs to be started, so that the efficiency of restarting after stopping is greatly improved; the driving efficiency and flexibility of the synthetic ammonia system are improved; the circulating ...

Lifting device of water treatment coaxial stirrer

The invention discloses a lifting device of a coaxial stirrer for water treatment, which belongs to the technical field of stirring equipment and comprises a supporting platform, a rotary driving device is connected below the supporting platform, a stirrer is connected below the rotary driving device, a lifting cross beam is arranged above the supporting platform, and the lifting cross beam is arranged above the supporting platform. A lifting cross beam is arranged on the supporting platform, the two ends of the lifting cross beam are connected with lead screw lifting devices, a supporting device is connected between the lifting cross beam and the supporting platform, the supporting device comprises a supporting seat and a supporting rod which are elastically arranged in a sliding mode, the supporting seat is connected with an auxiliary connecting device, the main shaft penetrates through the stirrer, and the bottom of the main shaft is connected with a rotating disc in a sleeved mode.

Loose strategy analysis method and device

In order to solve the optimization problem of policy complexity and security of a firewall, the invention provides a loose policy analysis method, which comprises the following steps of: establishing a loose degree scoring mechanism and a convergence analysis mechanism of the firewall; after firewall strategy hit logs are collected and analyzed, convergence analysis processing is conducted on the analyzed hit logs through the convergence analysis mechanism and the firewall looseness scoring mechanism; and finally, displaying the convergence analysis processing result in a two-dimensional image by taking the modifiable policy number as a horizontal coordinate and the looseness score as a vertical coordinate, and providing the result to a user as congruent information capable of objectively evaluating the tightness and necessity of the firewall security policy. And a user can visually find a balance point between the strategy management cost and the safety requirement in combination with ...

ACCESS POINT DEVICE, SYSTEM AND RELEVANT METHOD FOR WIRELESS LOCAL AREA NETWORK

Provided are an access point device, system, and relevant method for a wireless local area network. On the access point device, a plurality of virtual local area networks are formed corresponding to an identical extended service set, wherein the access point device includes a broadcast key management module for managing a broadcast key encrypting broadcast information; and a broadcast key storage device for storing the broadcast key. In the broadcast key storage device, the broadcast key is stored in a manner corresponding to the virtual local area network identifier of the virtual local area network, wherein the broadcast key management module obtains a corresponding broadcast key by means of the virtual local area network identifier.

Air quality monitoring method and system based on TDLAS (Tunable Diode Laser Absorption Spectroscopy) and temperature compensation

The invention provides an air quality monitoring method and system based on TDLAS and temperature compensation, and relates to the technical field of gas quality monitoring, and the method comprises the steps: collecting low-frequency sawtooth signals continuously emitted by a signal generator in to-be-detected gas; superposing a high-frequency sinusoidal signal on the low-frequency sawtooth signal to drive a semiconductor laser so as to realize scanning of laser wavelength near the center of a gas absorption spectral line; extracting to-be-detected gas to fill the gas chamber, scanning the to-be-detected gas chamber, performing focusing after gas absorption, and extracting second harmonic peak-peak value information after pre-amplification; a mathematical model of the harmonic signals and the temperatures is constructed, a quadratic function is selected and used for fitting, the second harmonic peak values measured at all the temperatures are substituted into a quadratic multi-term fitting ...

Method for optimizing stainless steel laser welding process through heat input

The invention discloses a method for optimizing a stainless steel laser welding process through heat input. According to the method, full penetration of the weld joint can be achieved in a multi-layer and multi-pass welding mode, the deformation and residual stress level is increased, a welded joint is subjected to multiple welding heat cycles, a large number of secondary austenite appears in a weld joint interlayer bonding area and a heat affected area, the welded joint is obviously optimized, and the welding quality is improved. The laser welding heat input process provides a method for optimizing hardness and corrosion resistance of a welded joint. The method is simple in cost and process, convenient to operate and convenient to industrially use.

Treatment and regeneration method of anion resin for water treatment

The invention relates to the technical field of resin for water treatment, and discloses a treatment and regeneration method of new anion resin for water treatment. The treatment and regeneration method comprises the following steps: (1) washing: injecting water into an anion resin layer for large backwashing, and slowly increasing the water injection speed; (2) pretreatment: respectively soaking the anion resin layer in an acid solution and an alkali solution for 4-8 hours at a single time, and adjusting the pH value to be neutral; (3) regeneration: regenerated alkali liquor is introduced into the anion resin layer, by adopting the treatment and regeneration method of the new anion resin for water treatment, the treatment effect of the new resin is greatly improved, the operation exchange performance is improved, the regeneration period is shortened, the use amount of acid and alkali is reduced, meanwhile, the discharge of acid and alkali wastewater and the wastewater treatment cost are ...

Impermeable shield inert synchronous grouting material and preparation method thereof

The invention discloses an impervious shield inert synchronous grouting material and a preparation method thereof. The impervious shield inert synchronous grouting material is prepared from the following raw materials in percentage by mass: 19%-28% of an inert cementing material, 45%-50% of river sand, 7%-10% of sodium bentonite, 4%-8% of a reinforcing-impervious complexing agent, 11.8%-15.7% of water and 0.1%-1% of a water reducing agent, and the total content of the raw materials is 100%. Wherein the inert cementing material is a mixture of superfine slag powder, fly ash and silica fume, and the mass ratio of the superfine slag powder to the fly ash to the silica fume is (14-18): (3-5): (2-5). The preparation method is based on solid waste resource recycling, the prepared shield inert synchronous grouting material is good in workability, good in pumpability and excellent in waterproof and anti-seepage performance, and durability and structural stability of tunnel prefabricated segments ...

MABR membrane assembly and MABR reactor

The invention belongs to the technical field of MABR membranes, and particularly provides an MABR membrane assembly and an MABR reactor. The MABR membrane core part comprises a heavy ion microporous membrane and a biological membrane. And a growing biological membrane is attached to the outer surface of the heavy ion microporous membrane. Air supplies oxygen to the biological membrane through the heavy ion microporous membrane, and organic matters, nitrogen and phosphorus contained in the sewage are adsorbed, absorbed, decomposed and removed by the biological membrane (synchronous nitrification and denitrification is realized), so that the sewage is purified. The MABR membrane assembly comprises a hanging basket, a membrane structure, a lifting separation mechanism and an aeration pipe, the membrane structure comprises a plurality of membrane units, the membrane units adopt heavy ion microporous membranes, the membrane units are distributed in the hanging basket and are arranged at equal ...

Novel cation exchange resin treatment method

The invention relates to the technical field of resin treatment, and discloses a novel cation exchange resin treatment method which comprises the following steps: washing; the new cation exchange resin layer is washed again for 30-40 min at the washing flow rate of 10-20 m/h after liquid caustic soda and hydrochloric acid pretreatment, sodium hydroxide treatment and hydrochloric acid treatment; regeneration treatment: backwashing the resin layer; performing regeneration flushing on the resin layer by using a regenerated hydrochloric acid solution, and stopping regeneration flushing after the sodium ion content of effluent meets the preset sodium ion content; the method comprises the steps of determining the type and the weight of new cation exchange resin, determining the alkali consumption during sodium oxide treatment, the acid consumption during hydrochloric acid treatment and the acid consumption during regeneration treatment based on the type and the weight of the resin, and preparing ...

ANTI-INFLAMMATORY LIPOPEPTIDE AND PREPARING METHOD AND APPLICATION THEREOF

Disclosed is an anti-inflammatory lipopeptide, which comprises peptide chains and aliphatic chains, the peptide chain being linked to the aliphatic chain through a peptide bond, and an aliphatic acid being linked to the N-terminal of the peptide chain. The lipopeptide suppresses inflammatory response induced by polyI:C, so as to prevent inflammation after skin injury and alleviate inflammatory response of skin inflammation such as allergic dermatitis. Also disclosed is a preparing method of the lipopeptide.

Silicon washing method for generator set boiler

The invention relates to the technical field of boiler silicon washing control, in particular to a generator set boiler silicon washing method. Comprising the following steps: treating tap water, industrial water and underground water by using cation exchange resin to obtain softened water; softened water with the hardness not larger than 5 mg CaCO3/L serves as water supply for a steam boiler; the main steam pressure of the steam boiler is detected in real time, when the main steam pressure rises to 10 MPa, silicon washing is started on the steam boiler, and the content of SO2 in supplied water is detected in real time; and adjusting and controlling the content of SO2 in the supplied water according to the main steam pressure of the steam boiler and the content of SO2 in the supplied water until the content of SO2 in the supplied water reaches a preset standard value required by the main steam pressure of the steam boiler. Through a load-limited silicon washing mode, when the boiler is ...

INTERACTIVE VISUALIZATION APPARATUS FOR REAL-TIME TEST DATA, AND IMPLEMENTATION METHOD THEREFOR

Disclosed are an interactive visualization apparatus for real-time test data, and an implementation method therefor. The apparatus comprises: an electronic control board abstract graph generation unit 101 for generating a high-reduction electronic control board abstract graph according to the structure of an electronic control board, wherein pin names are marked according to a pin arrangement on a test box, and corresponding load names are marked for used pins; an initial information acquisition and output unit 102 for acquiring basic information about a test after the building of the test is completed and outputting same in the electronic control board abstract graph; and a test data updating unit 103 for acquiring data of each pin during a test process in real time and updating the basic information about the test in real time according to a change in the pin data. By means of the apparatus, the aim of automatically testing an electronic control board, automatically recording required ...

Bench test system for hydrogen compressor

The invention provides a bench test system for a hydrogen compressor. The bench test system comprises a high-level hydrogen loading unit, a middle-level hydrogen loading unit, a low-level hydrogen loading unit, a high-level hydrogen pressure regulating unit, a middle-level hydrogen pressure regulating unit and a low-level hydrogen pressure regulating unit. The three stages of hydrogen loading units are respectively connected with a hydrogen exhaust port of the hydrogen compressor to be tested through pipelines, and the pressure of the exhaust port of the hydrogen compressor to be tested is 20 MPa or 45 MPa or 90 MPa by pressurizing hydrogen in the pipelines; the three-stage hydrogen pressure and temperature regulating unit is connected with a hydrogen inlet of the hydrogen compressor to be tested through a pipeline, and the pressure of the hydrogen inlet of the hydrogen compressor to be tested is 0.5-5 MPa or 5-20 MPa or 20-45 MPa through multi-stage pressure reduction and temperature reduction ...

Firewall configuration method and device

In order to efficiently and accurately carry out automatic deployment on a firewall strategy, the inventor provides a firewall configuration method which comprises the following steps: carrying out path analysis from an IPSRC to an IPDST based on network topology data, and determining configuration target equipment and configuration requirements of the target equipment; and performing comparative analysis according to the configuration requirement of the target equipment and the existing security policy configuration of the target equipment, and determining three key elements, namely a position LINE, an entry security domain ZONEFROM and an exit security domain ZONETO. The inventor also provides a device for realizing the method. The invention provides a more accurate configuration element analysis method, an interface, policy routing, routing, NAT (Network Address Translation), security domain and the like which influence firewall configuration elements are analyzed by adopting a flow ...

Method for preparing ethylene from alkoxy benzene with high selectivity

The invention relates to a method for preparing ethylene from alkoxy benzene with high selectivity. Alkoxybenzene can be converted into ethylene with high selectivity under the action of aluminosilicate or phosphoaluminate catalysts including molecular sieves (ethylene gas phase selectivity gt; 99%) and phenol (phenol liquid phase selectivity gt; and the reaction stability is good, and the catalyst is not easy to deposit carbon. The alkoxy benzene is rich in source, can be obtained through reaction of alcohols and phenol, and can also be obtained through biomass conversion. The process is coupled with a methanol-to-anisole reaction to realize high-selectivity preparation of ethylene from methanol, and is coupled with biomass conversion to realize high-selectivity preparation of ethylene and phenol from biomass, so that the process has important social and economic values.

BLOCKCHAIN-BASED SMART CONTRACT DEBUGGING AND RELEASING METHOD AND SYSTEM

A blockchain-based smart contract debugging and releasing method and apparatus. The method comprises: S1: automatically create a test channel while creating a transaction channel, and enable a user to join or exit the test channel synchronously when the user joins or exits the transaction channel; S2: deploy a smart contract to be tested on the test channel, and all users on the test channel jointly perform service test on contract contents; S3: determine whether the test of said contract passes or not, if yes, execute step S4, and if not, return said contract to a developer to modify or select a new smart contract, return to step S2, and re-test said contract; S4: carry out consensus on the content of said contract by all users on the test channel, and deploy said contract on the transaction channel after obtaining feedback of the agreed deployment. According to the method, the workload of participants can be reduced, the contract updating operation period is shortened, and the operation ...

ADJUSTABLE WIDE-SPECTRUM WAVELENGTH-INSENSITIVE DIRECTIONAL COUPLER

An adjustable wide-spectrum wavelength-insensitive directional coupler, comprising a substrate (100). A first-stage directional coupling structure (1), a phase-shifting structure (2), and a second-stage directional coupling structure (3) are sequentially connected and disposed on the substrate (100). The phase-shifting structure (2) comprises a phase-shifting curved waveguide, a phase-shifting straight waveguide (22), and a third modulation component (26), wherein the third modulation component (26) is disposed on the phase-shifting curved waveguide. One end of the phase-shifting curved waveguide is connected to an output end of a directional coupled waveguide I (16) of the first-stage directional coupling structure (1), and the other end of the phase-shifting curved waveguide is connected to an input end of a directional coupled waveguide III (30) of the second-stage directional coupling structure (3). One end of the phase-shifting straight waveguide (22) is connected to an output end ...

Bidirectional grasping forceps for digestive endoscope

The utility model belongs to the technical field of medical instruments, and particularly relates to a pair of bidirectional grasping forceps for a digestive endoscopy, which comprises a shell, an inner pipe sleeve, an air pipe, a signal pipe, a push plate, a push rod, a torsion spring shaft and a pair of bidirectional grasping forceps, the bottom of the signal tube is connected with a camera with an illuminating lamp, a torsion spring shaft is installed at the bottom in the shell through a shaft seat, and one end of the torsion spring shaft is connected with a two-way grasping forceps. According to the utility model, illumination and camera shooting are carried out through the camera with the illuminating lamp connected through the signal tube; the push plate pushes the push rod to press the torsional spring downwards so as to drive the torsional spring shaft to rotate, the two-way gripping tongs at one end of the torsional spring shaft rotate outwards to be opened, the push plate is slowly ...

Graphene sensor with air spacing layer

The invention discloses a graphene sensor with an air spacing layer, which is formed by periodically arranging a plurality of units, and the structures of the units are the same; each unit comprises six layers, namely a silicon dioxide substrate layer, a metal reflector layer, an air layer, a graphene metasurface layer, an ionic gel layer and a silicon dioxide dielectric layer. By changing the height of the air layer, the impedance matching of the sensor is optimal, and better tuning is realized. Tuning of the sensor can be realized by changing the Fermi level of the graphene, and high sensitivity tuning capability can be realized. The absorption peak resonance frequency point can be selected by changing the dielectric environment of the air layer, the maximum frequency shift sensitivity can reach 700 GHz/RIU or above, under the condition that the absorption amplitude reaches the maximum absorption, the sensitivity still reaches 450 GHz/RIU or above, and the structure has high stability ...

Automatic traditional Chinese medicine crusher

The invention belongs to the technical field of traditional Chinese medicine processing, and particularly relates to an automatic traditional Chinese medicine crusher which comprises a crushing box body, a discharging head is installed on the side face of the crushing box body, a feeding opening is formed in the top face of the crushing box body, a first connecting pipe is installed in the feeding opening, and a partition plate is installed at a pipe opening of the first connecting pipe; an opening is formed in the top face of the partition plate, and a second connecting pipe is installed in the opening. When the automatic traditional Chinese medicine crusher is used, traditional Chinese medicinal materials are placed in a receiving groove, then an embedded block is controlled to move downwards, the receiving groove carries the traditional Chinese medicinal materials to penetrate through a second connecting pipe to reach a first connecting pipe, the traditional Chinese medicinal materials ...

Magnetic adsorption material as well as preparation method and application thereof

The invention provides a magnetic adsorption material as well as a preparation method and application thereof. The magnetic adsorption material comprises a cross-linking component and a magnetic adsorption component, wherein the cross-linking component is composed of itaconic acid, acrylamide and N-allylthiourea; the functional component consists of a cross-linking agent and an initiator; the magnetic component is composed of magnetic Fe3O4 particles; the cross-linking component is used for cross-linking and embedding the magnetic component under the action of the functional component; wherein the molar ratio of the itaconic acid to the acrylamide to the N-allylthiourea is (1-5): 1: 1; the molar ratio of the crosslinking component to the crosslinking agent to the initiator is (3-7): (0.3-2): (0.002-0.02); the molar ratio of the crosslinking component to the magnetic component is (3-7): (0.3-1.5). The magnetic adsorption material contains multiple functional groups such as carboxyl, amino ...

Multi-party joint data statistical method capable of protecting privacy

The invention discloses a multi-party joint data statistical method capable of protecting privacy. The method comprises the following steps that: a statistical party performs privacy set intersection on IDs (Identity) held by each data party to obtain an intersection ID corresponding to each data party; the statistical party carries out salting summation statistics on the feature data corresponding to the intersection ID corresponding to the data party according to each data party in sequence, and finally the statistical party obtains a salting statistical total value of the feature data corresponding to all the intersection IDs; and the statistical party and each data party sequentially carry out desalting processing on the salting statistical total value corresponding to the intersection ID corresponding to the data party, and finally the statistical party obtains the statistical total value of the feature data corresponding to all the intersection IDs. According to the method, joint ...

Pressure testing method for large-scene space positioning, electronic equipment and storage medium

The invention relates to a pressure testing method for large-scene space positioning, electronic equipment and a storage medium, the pressure testing method for the large-scene space positioning combines the field of AR large-scene cloud positioning algorithm and performance testing, the AR cloud positioning algorithm service container is deployed, and a testing video and a cloud positioning request json are acquired, so that the performance of the large-scene space positioning is tested. The sending rate of the pressure test request is adjusted through the test script, so that the load requirement of performance test is met, the throughput and other performance parameters of large-scene positioning service are obtained, and the problem that in the prior art, pressure test cannot be effectively carried out for a space positioning algorithm is solved. Besides, the to-be-measured positioning map resources of different positioning maps are placed in the cloud positioning algorithm service ...

Method for washing generator set before starting

The invention relates to the technical field of generator sets, in particular to a washing method before starting of a generator set. Comprising the steps that demineralized water is added into a condenser, the condenser is washed, and detection parameters of the water quality of outlet water of the condenser are detected in real time; performing combined washing on the condenser and the deaerator, and detecting the detection parameters of the water quality of the outlet water in real time; the high-pressure heater system and the boiler body are subjected to combined washing, and detection parameters of the water quality of the outlet water are detected in real time; when the detection parameters are larger than the preset standard detection parameters, the demineralized water is discharged, and the demineralized water is added again. The steam turbine and the boiler are flushed step by step before the unit is started, so that the stable operation of the whole unit of the boiler is effectively ...

HIGHLY ACTIVE, LONG-ACTING ANTI-DIABETIC FUSION PROTEIN, AND MANUFACTURING METHOD AND PHARMACEUTICAL APPLICATION THEREOF

Provided is a highly active, long-acting anti-diabetic fusion protein. The protein is formed by connecting, directly or via a linker peptide, a highly active exenatide mutant to an optimally mutated Fc1 fragment of a human immunoglobulin IgG1. The optimally mutated Fc1 fragment of the human immunoglobulin IgG1 comprises: an optimally mutated human IgG1 hinge region and human IgG1 constant regions CH2 and CH3.

Resin regeneration process

The invention relates to the technical field of resin regeneration, and particularly discloses a resin regeneration process which comprises the following steps: S101, opening a backwashing water inlet valve and a backwashing drain valve, backwashing a resin layer until effluent is clarified, and closing the backwashing water inlet valve and the backwashing drain valve; s102, opening a regeneration acid inlet valve and a middle discharge valve, and introducing a regenerant to wash the resin layer; s103, the central control system sets regenerant washing time according to the regenerant concentration, and after washing is finished, a regeneration acid inlet valve and an intermediate discharge valve are closed; and S104, a conventional washing water inlet valve and a conventional washing water outlet valve are opened, the central control system sets the conventional washing time of the resin layer according to the ion content in water discharged from the conventional washing water outlet valve ...

Method for preparing olefin from methanol

The invention discloses a method for preparing olefin from methanol, which comprises the following steps of: gasifying methanol and phenol-like serving as reaction raw materials, introducing the gasified reaction raw materials into a two-section fixed bed catalytic reactor, and sequentially carrying out contact reaction on the reaction raw materials with a catalyst A (silicon-aluminum molecular sieve) and a catalyst B (silicon-aluminum or phosphorus-aluminum molecular sieve) to generate ethylene. The method provided by the invention has high selectivity, the phenol-like compound is used as a molecular catalyst, a catalytic reaction is carried out in a methanol and phenol-like co-feeding manner, the reaction raw materials are gasified and then are brought into a reactor by inert gas, and the selectivity of the final ethylene reaches more than 90% through a two-stage catalyst system. The problem of separation of current process products is solved. Meanwhile, the process has good stability ...

AIR CLEANING DEVICE AND PLASMA GENERATOR

An air cleaning device and a plasma generator. The plasma generator comprises: a power supply device used for generating a negative high voltage and at least one plasma generating electrode (10, 10'). The plasma generating electrode comprises a metal wire (110) and two metal plates (121) having the same shape. Cross sections of the two metal plates have an arc shape and are uniformly arranged on the circumference of a circle formed thereby. Central angles of the cross sections of the two metal plates (121) range from 30° to 90°, and the inside diameters of the cross sections of the two metal plates (121) range from 35 mm to 80 mm. The metal wire (110) passes through the center of the circle and is perpendicular to the cross section of the metal plate (121), the metal wire (110) connects to an output end of the power supply device, and the two metal plates (121) are grounded. The technical solutions of the present invention can very effectively process polluted air.

Method and device for correcting performance of silicon dioxide optical waveguide chip

The invention provides a silicon dioxide optical waveguide chip performance correction method and device, and relates to the field of photon integration, and the method comprises the steps: fixing a pattern mask above a silicon dioxide optical waveguide chip; illumination is applied to the upper portion of the pattern mask; the refractive index of the optical waveguide structure is changed by adjusting illumination parameters, and the performance of the silicon dioxide optical waveguide chip is corrected. The method is simple to operate, and the correction efficiency of the silicon dioxide optical waveguide chip performance can be greatly improved.

Terahertz metal metasurface sensor based on bound state in continuum

The invention discloses a continuum bound state-based terahertz metal metasurface sensor, which is formed by periodically arranging a plurality of square metal metasurface units with the same structure, and is characterized in that each metal metasurface unit comprises a dielectric layer at the bottom, and a metal resonator layer covers the dielectric layer; the metal resonator layer is composed of a large resonant ring and a small resonant ring. When the to-be-detected object is arranged on the metasurface, the resonance frequency of the transmission spectrum of the metasurface can generate corresponding frequency shift, and the attribute of the to-be-detected object can be obtained by detecting the frequency shift degree of the resonance frequency.

Method and system for monitoring oil consumption of power plant auxiliary equipment

The invention provides a power plant auxiliary machine oil consumption monitoring method and system, and belongs to the technical field of oil consumption monitoring, and the method comprises the steps: obtaining the auxiliary function of each power plant auxiliary machine, and classifying the power plant auxiliary machines of a whole power generation assembly line based on the auxiliary functions, the classified categories comprise preparation equipment before power generation, working equipment during power generation and good equipment after power generation; determining an oil consumption rule of each type of equipment according to a classification result, and determining an oil consumption reference threshold value of each power plant auxiliary machine according to the oil consumption rule and a standard working parameter of the power plant auxiliary machine; detecting an actual oil consumption threshold value of each power plant auxiliary machine in real time, and comparing the actual ...

METHOD FOR DETECTING QUANTITY OF ITEMS, AND VENDING MACHINE

Disclosed are a method for detecting the quantity of items, and a vending machine (010). The vending machine (010) comprises: an items channel (200) configured to temporarily store items, the items channel comprising an outlet (210); a shielding element (500) configured to close or open the outlet (210) of the items channel; and a driving device (300) configured to drive the items in the items channel (200) to move toward the outlet (210) of the items channel. The method comprises controlling a shielding element (500) to close an outlet (210) of an items channel; driving items in the items channel (200) to move until the items in the items channel abut against each other; measuring the total length of the items in the items channel (200); and calculating the quantity of items in the items channel according to the length of a single item in the items channel (200) and the total length.

Reverse osmosis water purification system and control method thereof

The invention discloses a reverse osmosis water purification system and a control method thereof.The reverse osmosis water purification system comprises a reverse osmosis water purification device and a control system, and the control system is connected with the reverse osmosis water purification device and used for controlling operation of the reverse osmosis water purification device; the reverse osmosis feed pump, the security filter, the high-pressure pump, the reverse osmosis unit and the fresh water tank are sequentially connected, an outlet of the reverse osmosis unit is connected with a concentrated water tank, and an inlet of the reverse osmosis unit is connected with the flushing water pump; the control system comprises an acquisition unit, a processing unit, a control unit and an early warning unit, the acquisition unit is used for acquiring working state data of the reverse osmosis water purification device, and the processing unit is used for setting working state instructions ...

Chitosan-sodium alginate hydrogel, preparation method and application thereof, copper peroxide-containing hydrogel and preparation method thereof

The invention provides chitosan-sodium alginate hydrogel, a preparation method and application thereof, copper peroxide-containing hydrogel and a preparation method thereof, and belongs to the technical field of water treatment. The gelatin is used as a raw material, the chitosan and the sodium alginate are used as auxiliaries, glutaraldehyde is used as a cross-linking agent, the hydrogel is prepared, the sodium alginate structure contains a large number of-COOH,-OH and other groups, and the sodium alginate and metal ions in wastewater can be subjected to chelation or complexation reaction; meanwhile, the chitosan structure contains a large number of active groups (such as amino groups), so that the chitosan can be combined with metal ions through ion exchange or integration, and therefore, the chitosan-sodium alginate hydrogel prepared by the preparation method can efficiently remove heavy metal ions. After the chitosan-sodium alginate hydrogel adsorbs Cu (II), hydrogen peroxide is added ...

OIL AND FAT COMPOSITION FOR FILLING AND SAUCE

An oil and fat composition for a filling or sauce, optionally containing an emulsifier, and having the following features: (1) a solid fat content ≥ 8% at 10°C; (2) a solid fat content ≥ 2% at 20°C; and (3) a solid fat content ≥ 2% under isothermal crystallization for 4 minutes at 10°C. The oil and fat composition of the present invention has low saturation, and the sauce made from the composition has good stability and does not tend to turn oily at a high temperature. The present invention can be used in baked goods such as bread, cookies, and cakes.

Chitosan coated magnetic nanoparticle immobilized laccase as well as preparation method and application thereof

The invention discloses chitosan coated magnetic nanoparticle immobilized laccase as well as a preparation method and application thereof, and belongs to the technical field of immobilized enzymes. The preparation method comprises the following steps: taking kaolin, an iron-containing precursor, a copper-containing precursor, an alkali source and a surfactant as raw materials, and preparing copper ferrite magnetic nanoparticles CF/K loaded on the kaolin by using a solvothermal method; cF/K is modified with chitosan CS, and CF/K-CS is obtained; and adding the CF/K-CS into a laccase solution, so as to obtain the chitosan coated magnetic nanoparticle immobilized laccase CF/K-CS-Lac. The method has the beneficial effects that the CF/K is modified in a chitosan coating form, the reaction condition is mild, the method is green and environment-friendly, and meanwhile, leaching of metal ions is inhibited; the prepared immobilized laccase has super-strong magnetic response, and can be rapidly separated ...

Atomization system for preparing spherical medicine microcrystals and application of atomization system

The invention relates to an atomization system for preparing drug microspheres, which comprises a heating chamber 2, an atomizer 5, a condensation chamber 14 and a cyclone separator 16, the heating chamber 2 is communicated with the atomizer 5 through an infusion tube 8, the atomizer 5 is provided with a vertical air inlet pipe 9, a horizontal air inlet pipe 10 and an atomizing nozzle 12, the atomizer 5 is communicated with the condensation chamber 14 through the atomizing nozzle 12, the condensation chamber 14 is communicated with the cyclone separator 16, and the cyclone separator 16 is communicated with the horizontal air inlet pipe 10. And the condensation chamber 14 is communicated with the gas condenser 13 through a low-temperature dry gas inlet pipe 15. According to the atomization system, compared with a traditional mode, the condensation time is shortened, the sphericity degree of the prepared microspheres is improved, the particle size range can be reduced to 0.2-0.5, and the ...

Inert wall post-grouting material with good freeze-thaw resistance and preparation method of inert wall post-grouting material

The invention discloses an inert wall post-grouting material with good freeze-thaw resistance. The inert wall post-grouting material is composed of the following raw materials by weight: 6.5-8% of molten iron desulphurization slag ultrafine powder; 0.3%-0.4% of a water reducing agent; 3.5%-5% of a modified alkali activator; 45%-49% of river sand; 20%-23% of water; 0.1%-0.2% of modified polypropylene fiber; 0.3%-0.4% of an alkaline functional complexing agent; 14%-16% of nano silicon dioxide modified superfine slag powder; 3%-4% of fly ash; 1%-2% of silica fume; the total content of the raw materials is 100%. The inert wall post-grouting material is good in freeze-thaw resistance, short in setting time and good in compressive strength.

Hoisting method for bidirectional bending and twisting dome support

The invention discloses a hoisting method for a bidirectional bending-twisting dome support, and relates to the technical field of building construction method.The hoisting method for the bidirectional bending-twisting dome support comprises the following steps that firstly, a basement foundation pit is constructed; 2, constructing a steel knot truss; and thirdly, a roof structure is installed, and the second step further comprises the steps that after main body steel structures on the two sides of the truss are installed, a stable frame system is formed, meanwhile, the truss temporary support is installed in place and is inspected to be qualified, and truss rod pieces are hoisted through an on-site tower crane. The truss is segmented by considering factors such as the weight, the distribution position, the tower crane performance and the transportation condition of the truss, in-situ high-altitude splicing is adopted in the truss installation scheme, the component segmentation principle ...

Boiler make-up water pretreatment system and control method thereof

The invention relates to the technical field of boiler make-up water pretreatment, in particular to a boiler make-up water pretreatment system and a control method thereof.The system comprises a water inlet end, a raw water tank, an ultrafiltration water feeding pump and a heat exchanger, the two groups of ultrafiltration units are connected with the heat exchanger; the ultrafiltration device is also connected with an ultrafiltration water tank; two groups of reverse osmosis units are arranged; and the control unit is used for controlling start and stop of the ultrafiltration unit and the reverse osmosis unit. The running data of the ultrafiltration unit and the reverse osmosis unit are collected in real time through the control unit, whether the ultrafiltration unit and the reverse osmosis unit run normally or not is judged according to the collected running data, adjustment and control are conducted, safety risks of the ultrafiltration unit and the reverse osmosis unit in the abnormal ...

Inclined steel column hoisting and welding method and device

The invention provides an inclined steel column hoisting and welding method and device, and belongs to the technical field of steel structure construction.The inclined steel column hoisting and welding method comprises the following steps that a steel column needing to be welded is cleaned and fixed; the first section of hoisting steel column is hoisted through a crane; the first section of hoisting steel column is welded and corrected; hoisting and correcting the inclined steel column; and the inclined steel column is welded. Compared with the prior art, an external stabilizing mechanism is not needed, automatic fixing and welding can be achieved through a crane, calibration is achieved through the elevation, perpendicularity and horizontal butt joint seams of the first hoisting steel column and the inclined steel column, fine adjustment is conducted through the second adjusting jack and the first adjusting jack, and the stability of the hoisting steel column and the inclined steel column ...

Height-adjustable unit type curtain wall transfer frame

The invention discloses a height-adjustable unit type curtain wall transfer frame, and relates to the technical field of unit type curtain wall transfer, the height-adjustable unit type curtain wall transfer frame comprises a support frame, vertical rods are fixedly connected to four corners of the top of the support frame, hanging rings are inserted into the tops of the vertical rods, a cross rod is in lap joint with one side of each vertical rod, and a curtain wall is in lap joint with the upper surface of each cross rod; the two sides of the front face of the transverse rod are rotationally connected with bevel gear screws. Through the action of a rolling shaft and a first guide groove, the bottom of a sliding pressing plate can be conveniently guided, the problem that the fixing effect on a curtain wall is affected due to the fact that the sliding pressing plate shakes when moving is avoided, through the action of an adjusting bevel gear, bevel gear screws on the two sides can be conveniently ...

Freight vehicle matching method and matching device

The invention discloses a freight vehicle matching method and device, and solves the technical problems that a vehicle matching scheme in the prior art is poor in transport capacity, complex in implementation, low in vehicle utilization rate and the like. The freight vehicle matching method comprises the following steps: receiving order data; calculating the vacancy rate of each vehicle type in each vehicle team in the transport capacity pool at the time point when the order arrives; calculating the vehicle type priority of each vehicle type in each vehicle team according to the vacancy rate; according to the vehicle type priorities of all vehicle types of each vehicle team, calculating the vehicle team priority of the vehicle team; establishing a vehicle configuration model according to a decision variable of the motorcade and the motorcade priority; solving the vehicle configuration model, obtaining a value of a decision variable of each motorcade, and determining a matched motorcade ...

Large-torque transmission system and mounting method thereof

The invention discloses a large-torque transmission system and an installation method thereof. The transmission system comprises a variable-speed transmission unit and a multi-stage speed reduction drive axle. The variable speed transmission unit comprises the length compensation mechanism, a clutch and a vibration reduction gearbox which are connected in sequence. And the vibration reduction gearbox is connected with the multi-stage speed reduction drive axle. The length compensation mechanism is arranged on the variable-speed transmission unit, and length compensation is performed when longitudinal and transverse tiny deformation is generated on the frame of the vehicle, so that the internal stress of a transmission system is reduced, the damage of the transmission system is reduced, the cargo capacity of the vehicle is further increased, and the reliability and the transfer efficiency of the transmission system of the non-road vehicle are improved; and the maintenance cost is reduced ...

Pseudomonas deformation PHBA133 and application thereof

The invention relates to a Pseudomonas mutans PHBA133 and application thereof, and belongs to the field of bioengineering, the strain is classified and named as Pseudomonas mutans PHBA133, and is preserved in the China General Microbiological Culture Collection Center on December 26, 2022, and the preservation number is CGMCC (China General Microbiological Culture Collection Center). 26275. The pseudomonas proteinans PHBA133 provided by the invention is high in hereditary stability and wide in action substrate spectrum, p-hydroxycinnamic acid and derivatives can be fermented and converted into corresponding aldehydes, the conversion concentration of p-hydroxybenzaldehyde is as high as 3.4 g/L, and the pseudomonas proteinans PHBA133 has industrial application potential; the method is simple in production process, mild in condition, green and safe, avoids the problems of long reaction time, high energy consumption and environmental pollution of a traditional chemical method, has few by-products ...

Steel rolling finished product double-gun label welding method, system and robot

The invention discloses a steel rolling finished product double-gun label welding method and system and a robot, and relates to the technical field of steel rolling production control. When the steel reaches a stop position, the end face of the steel is determined through a visual recognition device, and an image of the end face is obtained; processing the image to determine a first welding area and a second welding area for welding the label; and the double-gun welding set is controlled to weld the labels to the first welding area and the second welding area correspondingly. The double-gun welding set is controlled to pick up two sets of welding nails and labels before steel arrives, and the two sets of labels can be directly welded after the steel arrives and stops, so that the equipment action period is omitted, the label welding time is shortened, and the speed increasing requirement of an existing steel rolling production line is met.

Polyol composition, polyurethane material and application thereof

The invention discloses a polyol composition used for preparing a polyurethane material for orthopedic testing, the polyol composition comprises polyether polyol, a foam stabilizer, a catalyst, a cross-linking agent and water, the average hydroxyl value of the polyol composition is 380-490 mgKOH/g, the functionality of the cross-linking agent is greater than or equal to 2, and the number-average molecular weight of the cross-linking agent is less than or equal to 400. The invention also discloses a polyurethane material prepared from the polyol composition as a raw material, and an application of the polyurethane material in orthopedic tests. The polyol composition for preparing the polyurethane for orthopedic testing can be provided, and a polyurethane material prepared from the composition has relatively good screw pull-out strength and meets the requirements of ASTM F1839. According to the polyol composition disclosed by the invention, the preparation process of a polyurethane material ...

Co3O4 nanotube/g-C3N4 nanosheet composite material as well as preparation method and application thereof

The invention discloses a Co3O4 nanotube/g-C3N4 nanosheet composite material as well as a preparation method and application thereof, and belongs to the technical field of photo-thermal concerted catalysis. The preparation method of the composite material comprises the following steps: (1) calcining a carbon nitride precursor to prepare g-C3N4; (2) stripping the g-C3N4 into a g-C3N4 nanosheet through a thermal stripping method; (3) taking the g-C3N4 nanosheet, cobalt salt and a precipitant as raw materials, carrying out hydrothermal reaction, washing and drying a reaction product; and (4) calcining the hydrothermal reaction product, and cooling to obtain the composite material. The preparation method has the beneficial effects that 1, the preparation method is simple and easy to operate, and the raw material cost is low; and 2, the NO removal rate of the prepared composite material can reach 90-100% under the condition of photo-thermal synergistic activation of H2O2, the catalytic performance ...

Subsonic aircraft rapid modeling method in digital countermeasure simulation environment

The invention discloses a rapid modeling method for a subsonic aircraft in a digital countermeasure simulation environment, which can effectively and rapidly carry out six-degree-of-freedom modeling on the aircraft and apply the six-degree-of-freedom modeling to digital simulation so as to obtain relatively accurate and real kinetic parameters for attack and defense drilling. An aircraft model is divided into a dynamics module, an aerodynamic force resolving module, a guidance module, a control module (namely a self-driving instrument) and a matched auxiliary environment resolving module, and the aircraft model is used for calculating environment parameters such as air density, dynamic pressure, gravity, acceleration and the like when a missile flies. And then, the functions of each sub-module are gradually refined, and various physical parameters are transmitted among the modules so as to complete the corresponding functions. According to the method, the characteristic of high nonlinearity ...

UHPC-CSW wet joint structure of prefabricated bridge deck slab and construction method of UHPC-CSW wet joint structure

The invention discloses a UHPC-CSW wet joint structure of a prefabricated bridge deck slab and a construction method thereof.The structure comprises CSWs embedded in the ends of two adjacent concrete prefabricated slabs and UHPC poured between the two adjacent concrete prefabricated slabs, shear nails are arranged on the CSWs, transverse steel bars and longitudinal steel bars are arranged in the concrete prefabricated slabs, and the transverse steel bars and the longitudinal steel bars are arranged in the concrete prefabricated slabs. The two ends of the longitudinal steel bars stretch out of the concrete prefabricated slab and stretch into the UHPC, annular steel bars used for connecting every two adjacent longitudinal steel bars are arranged in the UHPC, and reinforcing steel bars are arranged in the annular steel bars in a penetrating mode. The method comprises the following steps: 1, manufacturing a combined bridge deck slab; 2, bridge deck slab hoisting operation; and 3, wet joint ...

Communication environment simulation test method for simulating real-time transmitting gain of antenna

The invention discloses a communication environment simulation test method for simulating real-time transmitting gain of an antenna, and relates to the technical field of short-distance wireless communication channel simulation. The whole process of air node communication transmission can be simulated more truly under the condition of finer granularity, the influence of antenna transmission gain change caused by complex node movement on communication can be simulated, a more accurate and real simulation result can be obtained, and the method has a wide application prospect in the field of wireless communication.

Ecological river floating bed system

The invention discloses an ecological river floating bed system which comprises a channel foundation part and a purification device. The end face of the channel foundation part is in an isosceles trapezoid shape, the upper end opening is large, and the lower end is tightened. The channel foundation part is sequentially divided into a water stopping section, a washing section, a uniform flowing section and a silting section in the water flow direction. A micro water retaining dam is arranged between the water stopping section and the scouring section; the bottom surface of the washing section is sunken downwards to form a water storage pit; the purification device comprises a plant floating bed and an iron-carbon purification device, the purification device is connected with the channel foundation part through a first connecting rope, and the purification device is located at the downstream of the micro retaining dam; the plant floating bed is connected with the iron-carbon purification ...

Power plant water treatment system

The invention relates to the technical field of water treatment, and discloses a power plant water treatment system, which comprises a detection unit used for detecting data parameters of connected equipment; the pretreatment unit is used for separating insoluble substances in source water; the pre-desalting unit is used for separating soluble impurities in water; the desalting unit is used for deeply removing anions and cations in water, and the control unit is used for managing and controlling various parameters of equipment in the water treatment process; the control unit comprises an acquisition module, a processing module, a control module and an alarm device electrically connected with the processing module which are electrically connected in sequence, and the power plant water treatment system is high in reliability and high in water treatment energy utilization rate.

Thermal power plant online chemical instrument dynamic calibration method

The invention provides a thermal power plant on-line chemical instrument dynamic verification method, and belongs to the technical field of instrument verification, and the method comprises the steps: obtaining instrument parameters corresponding to each on-line chemical instrument based on the type of the thermal power plant on-line chemical instrument; obtaining a normal deviation corresponding to each online chemical instrument based on the instrument parameters and the output power range of the thermal power plant; obtaining a period curve graph of each online chemical instrument, obtaining a corresponding real-time deviation, and comparing the real-time deviation with a normal deviation to obtain an abnormal deviation; and based on the abnormal deviation, carrying out automatic calibration on the corresponding online chemical instrument. By analyzing the instrument parameters and the output power of the thermal power plant, the normal deviation and the real-time deviation corresponding ...

Network security equipment key management system based on LoRa wireless communication technology

The invention relates to a network security equipment key management system based on LoRa wireless communication technology, which comprises an electric power special key cabinet and an upper computer, the electric power special key cabinet comprises a central control host, an input panel, an output panel, a key buckle, a key and an encryption lock, and the central control host comprises a main control chip. The key cabinet special for electric power further comprises a key management device fingerprint identification module and a key management camera module. The method has the advantages that the structure is simple, the login management safety and efficiency are guaranteed, and the operation stability of the dispatching data private network is improved.

Method and system for solving multi-group neutron diffusion equation of reactor core of nuclear reactor

The invention provides a method and system for solving a nuclear reactor core multi-group neutron diffusion equation, and relates to the technical field of nuclear reactor core calculation. The method comprises the following steps: reconstructing a nuclear reactor multi-group neutron diffusion equation into an elliptic partial differential equation, determining a coefficient matrix of the equation according to boundary conditions of the nuclear reactor multi-group neutron diffusion equation, and performing grid division on an established geometric model of a nuclear reactor core by using an unstructured grid so as to construct a core grid model; accurate simulation of the transient process of the reactor core neutrons in any geometrical shape is realized; a calculation method for establishing a multi-group diffusion equation based on the coefficient matrix and the reactor core grid model and a calculation method for calculating multi-group neutron macroscopic section parameters of the nuclear ...

Compositions for lightening and/or whitening keratin materials

The present invention provides a composition for lightening and/or whitening keratin materials comprising, in a hydrophilic phase: (i) at least one diol having a logP of-0.5 to 4; (ii) at least one surfactant having an HLB value of from 8 to 20 at a temperature of 25 DEG C; and (iii) at least one lightening and/or whitening ingredient selected from vitamin B3 and derivatives thereof, wherein the composition is oil-free. The invention also provides a non-therapeutic method for lightening and/or whitening a keratin material comprising applying the composition to a keratin material, the present invention relates to the use of a combination of at least one diol having a logP of-0.5 to 4 and at least one surfactant having an HLB of 10 to 20, for improving the permeation of a lightening and/or whitening ingredient into keratin material, said lightening and/or whitening ingredient being selected from the group consisting of vitamin B3 and derivatives thereof.

Oil sampling device for power plant auxiliary equipment

The invention discloses an oil sampling device for power plant auxiliary equipment, which comprises a to-be-detected container (1) and a sampling bottle: a fixing part fixedly connected with the side wall of the to-be-detected container (1); the lifting component is fixedly connected with the bottom end of the fixing component; the sampling height is adjusted; the transverse moving part is fixedly connected to the top of the lifting part and is used for adjusting the sampling position; the top end of the telescopic sampling component is in sliding connection with the transverse moving component, and a sampling head (503) is arranged at the bottom end of the telescopic sampling component; the sampling head (503) is connected with the sampling bottle through a conduit; a sampling method and a detection method of the device are set according to the device, and an integrated structure of mounting, adjusting, sampling and storage machine inspection is achieved; the accuracy of a sampling position ...

Visual pain grade scoring method and application

The invention discloses a visual pain grade scoring method and system, and belongs to the medical field, and the method comprises the following steps: building the image information of pain grade scoring preprocessing; establishing image information of a pain grade standard; gazing information of a patient gazing the pain grade scoring preprocessing image information is collected, and a preprocessing gazing information data list is generated; generating a pain level reliability data list based on the pre-processed gaze information data list; gazing information of a patient gazing the pain grade standard image information is collected, and a pain grade gazing information data list is generated; screening and integrating the pain level fixation information data list to generate a data list of pain levels of the patient; wherein the pain level reliability data list is used for representing the accuracy degree of pain level judgment of the patient. According to the invention, the more accurate ...

Slide valve type floating coupling tool with rupture disc

The invention relates to a slide valve type floating coupling tool with a rupture disk. The slide valve type floating coupling tool comprises an upper joint, a lower joint, the rupture disk, a pressure-bearing slide sleeve, a shear ring and a lower slide sleeve, the first end of the lower connector is inserted into the first end of the upper connector and fixedly connected with the first end of the upper connector, so that an axially-through inner cavity is formed in the upper connector and the lower connector, a cavity penetrating through the inner cavity is formed between the outer wall of the first end of the lower connector and the inner wall of the first end of the upper connector, and one end of the lower sliding sleeve is fixedly connected with the inner wall of the first end of the lower connector. The pressure-bearing sliding sleeve is installed on the inner wall of the upper connector, the shearing ring is installed between the lower sliding sleeve and the upper connector and ...

Liquid medicine sampling inspection machine

The invention belongs to the technical field of liquid medicine sampling inspection, and particularly relates to a liquid medicine sampling inspection machine which comprises a conveying belt and a device table, a detection pipe and a detection table are installed at the top end of the device table, a liquid storage barrel is arranged at the top end of the conveying belt, the top end of the liquid storage barrel is matched with the bottom end of the detection pipe, and a sliding table is arranged over the detection pipe. A hydraulic cylinder is installed at the top end of the sliding table, the output end of the hydraulic cylinder penetrates through the sliding table and is fixedly connected with a supporting plate, three telescopic rods are arranged at the bottom end of the supporting plate, collecting bottles are installed at the ends, away from the supporting plate, of the three telescopic rods, and collecting bottles are installed at the ends, away from the supporting plate, of the ...

Power generator set shutdown protection method

The invention relates to the technical field of thermal power plants, and discloses a generator set shutdown protection method which comprises the following steps: 6-7 hours before unit splitting, adjusting the pH value of boiler water to 9.4-9.6, and stopping steam drum phosphate dosing; all chemical instruments and chemical instrument water inlet doors except the boiler water pH and specific conductivity meter and the feed water specific conductivity meter are closed; 5-6 h before splitting of the unit, octadecylamine protection liquid is added into the unit, the octadecylamine protection liquid enters a boiler, a steam turbine and the whole thermodynamic system along with steam after being gasified at the high temperature, a hydrophobic protection film is formed on the inner surface of thermodynamic equipment, and it is guaranteed that the pH value of boiler water is larger than 9.1; and after the boiler is shut down, all air doors and baffles are rapidly closed, a hearth is closed, ...

Switch cabinet discharge positioning and temperature measuring method based on sparse pixels

The invention discloses a sparse pixel-based switch cabinet discharge positioning and temperature measurement method. The method comprises the steps of S100, acquiring a visible light image of an internal structure of a high-voltage switch cabinet; s200, collecting a discharge light signal of the internal structure of the high-voltage switch cabinet; s300, segmenting the visible light image based on the avalanche diode array unit to obtain a first image, and focusing the discharge light signal on the first image to perform first positioning on the discharge of the internal structure of the high-voltage switch cabinet; s400, segmenting the visible light image based on the infrared focal plane to obtain a second image, focusing the discharge light signal on the second image to perform temperature measurement on the internal structure of the high-voltage switch cabinet, and performing secondary positioning on discharge of the internal structure of the high-voltage switch cabinet based on the ...

Enclosed outdoor rehabilitation seat

The invention discloses an enclosed outdoor rehabilitation seat, and belongs to the technical field of outdoor facilities for old people. The technical problems that most of existing public facilities only consider young groups and neglect old groups, so that outdoor seats are single in design style, lack of diversity and poor in functionality are solved. The enclosed outdoor rehabilitation seat comprises an annular fixed base and an annular seat unit, the annular seat unit is arranged on the annular fixed base; the annular fixed base comprises an annular supporting outer wall, an annular supporting inner wall and an annular base, and a space defined by the annular supporting outer wall, the annular supporting inner wall and the annular base forms a water storage tank; the annular seat unit comprises a plurality of vertical seat plates, the vertical seat plates are arranged in the circumferential direction of the annular fixed base, a gap is formed between every two adjacent vertical seat ...

High-efficiency low-cost culture medium for in-vitro differentiation of adipose tissue-derived stem cells

The invention provides a high-efficiency, low-cost and food-safe improved differential medium for in-vitro differentiation of porcine adipose-derived mesenchymal stem cells. Compared with a traditional differential medium, the improved differential medium is adopted to induce adipogenic differentiation of the adipose-derived mesenchymal stem cells, and the relative expression quantity of PPAR gamma genes and proteins can be increased on the fifth day of differentiation; on the tenth day of differentiation, the relative expression quantity of FABP4 and Plin1 genes and proteins is increased; and the oil red O staining result proves that the fat droplets accumulated by using the improved differential culture medium to induce adipogenic differentiation of the adipose-derived stem cells are more and fuller. In conclusion, according to the improved differentiation culture medium, the adipogenic differentiation efficiency of the adipose-derived stem cells is improved, and the adipogenic differentiation ...

Three-shaft stirring waterproof curtain construction method for replacing and filling soil

The invention discloses a three-shaft stirring waterproof curtain construction method for replacing and filling soil, and relates to the technical field of building construction, the three-shaft stirring waterproof curtain construction method for replacing and filling soil comprises the following steps: step 1, construction preparation; 2, a drilling machine is in place; 3, casing pipe pressing-in and drilling are carried out; fourthly, the underground cast-in-situ bored pile is pulled out; and fifthly, land backfilling, tamping and pipe pulling are conducted. During construction, the operation ground is firstly leveled, meanwhile, an underground structure is measured, then a roadbed plate and a positioning steel plate are firstly placed, then a full-slewing drilling machine is placed, a hydraulic pump station is placed in place, the drilling machine is leveled, then a balance weight and a counter-force fork are installed, a sleeve and a drill bit are installed, the perpendicularity of ...

Upper limb chest-expanding rehabilitation apparatus

The invention discloses an upper limb chest-expanding rehabilitation apparatus, comprising: a lifting device comprising a telescopic assembly and a motion assembly; the telescopic assembly comprises a telescopic arm, a first moving arm and a second moving arm; the first moving arm and the second moving arm are arranged on the two sides of the telescopic arm respectively. The first moving arm and the second moving arm are rotationally connected with the telescopic arm respectively; the movement assembly is connected with the first movement arm and the second movement arm and drives the first movement arm and the second movement arm to rotate on the two sides of the telescopic arm, and therefore the arms of a patient are driven to move to complete chest expanding movement. The control assembly comprises a control unit and a heart rate monitoring unit; the heart rate monitoring unit is used for monitoring the heart rate of a patient; the control unit controls the motion frequency of the motion ...

Underground coal mine monorail crane rail flaw detection device and method

The invention discloses a coal mine underground monorail crane rail flaw detection device and method.The device comprises a U-shaped frame composed of a bottom plate and two side plates, the two side plates are arranged on the two sides of a monorail crane rail and are each provided with a plurality of guide wheels, and the bottom plate is movably connected with a wheel type ultrasonic probe through a probe stabilizer; the wheel type ultrasonic probe can adapt to pressure and move up and down to relieve the pressure while being tightly attached to the surface of a monorail crane rail, traction rings are arranged at the front end and the rear end of the U-shaped frame respectively, and a positioning module capable of positioning the whole device is further arranged on the bottom plate. The flaw detection device can be arranged on the track and runs together with the monorail crane, and the function of accurate, automatic and efficient flaw detection of the monorail crane track is achieved ...

RS485-based hybrid communication method, data acquisition unit and system

The invention discloses an RS485-based hybrid communication method, a data acquisition unit and a system, a serial port of the data acquisition unit is connected with a plurality of devices through an RS485 bus, and the data acquisition unit acquires serial port configuration parameters and communication protocols of each device and generates a bus interface configuration file; the data collector divides the multiple devices into n groups according to the serial port configuration parameters, n is an integer greater than or equal to 1, the devices in the same group have the same serial port configuration parameters, and the devices in different groups have different serial port configuration parameters; the data acquisition unit sequentially calls the serial port configuration parameters of each group of equipment from the bus interface configuration file, and adjusts the serial port communication parameters of the data acquisition unit according to the serial port configuration parameters ...

Stainless steel mesh cathode membrane, preparation method thereof and stainless steel mesh cathode membrane assembly

The invention provides a stainless steel mesh cathode membrane, a preparation method thereof and a stainless steel mesh cathode membrane assembly. The preparation method comprises the following steps: modifying graphite powder by using a mixed acid solution, potassium permanganate and hydrogen peroxide to obtain graphene oxide; a manganese acetate solution serves as a deposition solution, constant-current anodic treatment is conducted on the stainless steel mesh, and a manganese dioxide modified stainless steel mesh is obtained; and dispersing graphene oxide in water to obtain a graphene oxide solution, and performing constant-potential anodic treatment on the manganese dioxide modified stainless steel mesh by taking the graphene oxide solution as a deposition solution to obtain the MnO2 (at) rGO modified stainless steel mesh cathode film. According to the present invention, the preparation cost is low, the process is simple, the environmental protection is achieved, and when the material ...

Method and device for determining toughness index of power system

The invention discloses a method and a device for determining a toughness index of a power system. The method comprises the following steps: determining a fault set in which power equipment in a predetermined power system may have faults; a fault label of each fault in the fault set in a predetermined weather state is determined, and the fault label comprises a fault rate of each fault in the fault set in the predetermined weather state; determining an initial toughness index corresponding to the predetermined power system according to the fault rate of each fault in the fault set in the predetermined weather state and the power parameters of the predetermined power system; and determining a target toughness index of the predetermined power system according to the initial toughness index. According to the method, the technical problem that the toughness index of the power system is difficult to accurately evaluate in related technologies is solved.

Performance detection system for electricity utilization information acquisition device

The invention discloses a performance detection system for an electricity utilization information acquisition device, and the system comprises a test board, the top of the test board is provided with a conveying groove and a conveying belt penetrating through the conveying groove, the two sides of the conveying belt at the top of the test board are respectively provided with a positioning mechanism, and the positioning mechanisms are provided with probes corresponding to the wiring terminals of an intelligent electric meter; the fluctuation power supply is provided with an output end; the front current detection device is connected between the fluctuation power supply and the input end of the intelligent electric meter; the rear current detection device is connected to the load and the output end of the intelligent electric meter; and the ammeter analysis host, the front current detection device and the rear current detection device of the servo motor of the positioning mechanism communicate ...

Application of solanesol in preparation of medicine for preventing, treating or relieving chronic pain

The invention discloses application of solanesol in preparation of a medicine for preventing, treating or relieving chronic pain. The solanesol is proved to be capable of remarkably relieving chronic pain and accompanied anxiety-like behaviors without influencing the normal movement function of a mouse, so that the solanesol is applied to preparation of the medicine for preventing, treating or relieving the chronic pain. Meanwhile, the solanesol disclosed by the invention has a chronic pain relieving mechanism of inhibiting activation of spinal astrocytes and microglia and reducing secretion of proinflammatory factors. The invention discloses the effect and deep mechanism of solanesol for relieving mechanical touch pain and heat pain for the first time, and proves that solanesol has potential application value in preparation of medicines for preventing, treating and relieving chronic pain, and has great clinical significance.

Silicon wafer cleaning method for improving quality of metal and particles on surface of polished silicon wafer

The invention relates to the technical field of semiconductors, in particular to a silicon wafer cleaning method for improving the quality of metal and particles on the surface of a polished silicon wafer. The method at least comprises the following steps of: cleaning a silicon wafer by adopting an SC1 cleaning solution; washing with ultrapure water; cleaning the silicon wafer by using an SC2 cleaning solution; washing with ultrapure water; cleaning the silicon wafer by using an SC1 cleaning solution added with a chelating agent; washing with ultrapure water; and drying. According to the cleaning method, the quality of metal and particles on the surface of the silicon polished wafer can be effectively improved, the surface cleanliness of the silicon polished wafer is improved, and the yield of subsequent process epitaxy and device processing is improved. Moreover, by adopting the cleaning method disclosed by the invention, cleaning equipment does not need to be transformed, and the method ...

Preparation and application of novel drug microsphere containing carrier material

The invention relates to a drug microsphere containing a carrier material, the weight ratio of a drug to the carrier material in the drug microsphere is 1: 1-1: 20, and the drug is selected from any one of an insoluble drug, a slightly soluble drug, a soluble drug and a soluble drug with the melting point of 60-300 DEG C; the carrier material is selected from any one or a combination of a sustained-release material, a water-soluble carrier material, an indissolvable carrier material and an enteric-soluble carrier material, the drug microspheres are in a sphere-like shape or a sphere shape or a combination of the sphere-like shape and the sphere shape, the average particle size of the drug microspheres is 20-250 [mu] m, the porosity of the drug microspheres is less than or equal to 10%, and the bulk density of the drug microspheres is 0.25-0.86 g/cm < 3 >. The drug microsphere provided by the invention has the advantages of uniform particle size distribution, large drug loading capacity, ...

Pretreatment method of industrial wastewater in composite sewage treatment plant

The invention discloses a pretreatment method of industrial wastewater in a compound sewage treatment plant, which is applied to the field of wastewater treatment and comprises the following steps: firstly, removing suspended solids and impurities in the industrial wastewater by using a coarse screen and a fine screen; then, performing detoxification treatment on organic matters in the industrial wastewater by adopting an advanced oxidation method; and finally, carrying out degradation treatment on organic matters in the industrial wastewater by adopting a hydrolytic acidification method. According to the method, an advanced oxidation method and a hydrolytic acidification method are combined, so that the effects of enhancing advantages, avoiding disadvantages and complementing advantages are achieved. The poison inhibition effect of the wastewater on microorganisms in hydrolytic acidification is greatly reduced and even eliminated by the previous advanced oxidation method, and refractory ...

Green plant wall capable of automatically adjusting height

The invention relates to a green plant wall capable of automatically adjusting the height, belongs to the technical field of home environment vertical greening, and solves the problem that an existing plant wall is inconvenient for a wheelchair user to carry out maintenance operation. The green plant wall capable of automatically adjusting the height comprises a green plant placing component, a lifting component, an operation table component and a moving component. Lifting components are installed on the two sides of the green plant placing component, the bottom end of the green plant placing component is rotationally connected with an operation table component, and moving components are installed at the bottom ends of the lifting components. According to the green plant wall capable of automatically adjusting the height, lifting is conducted through the lifting structure, the height of the green plant wall can be automatically adjusted through the control processor and the infrared detector ...

Unmanned aerial vehicle communication system

The invention discloses an unmanned aerial vehicle communication system which comprises an unmanned aerial vehicle anti-interference communication system which can comprise an unmanned aerial vehicle communication transmission module, a signal receiving module, a portable command platform, a data processing module and a data remote transmission module. The unmanned aerial vehicle communication transmission module comprises an unmanned aerial vehicle body, a communication transmission module and an anti-interference module, the communication transmission module is loaded in the unmanned aerial vehicle body and connected with the anti-interference module through a line, and the unmanned aerial vehicle communication transmission module transmits a signal to the signal receiving module through a WIFI/microwave link; and the signal receiving module takes a remote controller as a carrier and transmits communication data to the portable command platform through an HDMI (High Definition Multimedia ...

Generator hydrogen supplementing method

The invention relates to the technical field of generators, and discloses a generator hydrogen supplementing method, a gas cylinder group is communicated to a generator through a busbar and a pressure reducing valve in sequence through a pipeline, the gas cylinder group comprises a plurality of hydrogen cylinders connected in parallel, and the hydrogen supplementing method is characterized by comprising the following steps: opening a busbar inlet valve and an air exhaust valve; the opening degree of the valve is 20-80%; fully opening a pressure reducing valve and an outlet main pipe main door of the gas cylinder group, fully opening a hydrogen cylinder to wash and exhaust a pipeline, and then closing a hydrogen cylinder outlet valve and a busbar air exhaust valve; a hydrogen supplementing valve is opened, the pressure of the low-pressure side of a pressure reducing valve is adjusted to be 0.5-1.6 MPa, and hydrogen is provided for a power generator; after the hydrogen pressure in the generator ...

Ammonia preparation device for condensed water of thermal power plant

The invention discloses a thermal power plant condensed water ammonia preparation device which comprises a condensed water pipeline. The ammonification part is connected with the condensed water pipeline; the supplementing part is connected with the ammonia adding part and is used for adding ammonia liquid to the ammonia adding part when the ammonia liquid in the ammonia adding part is lower than an ammonia liquid level high threshold value; the data acquisition part is used for performing data acquisition on the condensed water pipeline, the ammonia adding part and the supplementing part; the controller is connected with the ammonia adding part, the supplementing part, the leakage detection module and the data acquisition part and is used for completing automatic ammonia adding operation on the condensed water pipeline and completing ammonia supplementing operation on the ammonia adding part according to the data information of the data acquisition part; the data information of the data ...

Cordyceps sinensis polypeptide as well as extraction method and application thereof

The invention relates to extraction of polypeptide, and discloses cordyceps sinensis polypeptide as well as an extraction method and application thereof. Comprising the following steps: (1) mixing cordyceps sinensis polypeptide and a solvent to obtain slurry; (2) carrying out solid-liquid separation I on the slurry, and precipitating a clear liquid obtained by the solid-liquid separation I to obtain a precipitate; (3) separating the precipitate to obtain a crude extract; (4) mixing the crude extract with an enzyme and a ZIF material, and performing enzymolysis to obtain an enzymolysis product; and (5) carrying out enzyme deactivation and solid-liquid separation II on the enzymolysis product to obtain supernate containing the cordyceps sinensis polypeptide. The cordyceps sinensis polypeptide extracted by the extraction method has high activity, and the extraction rate of the cordyceps sinensis polypeptide can be effectively improved.

Full-automatic tester for oleic acid value for electric power

The invention discloses a full-automatic tester for an oleic acid value for electric power, which comprises a sample test tube, a constant-temperature water tank, a light transmittance detection device, an extract liquid release device, an auxiliary fusion device, a condensation collection device and a detection unit, and the detection unit is fixedly connected with the outer wall of the sample test tube and is used for detecting the color change of a solvent; the storage execution module is in signal connection with the light transmittance detection device, the extract liquid release device, the auxiliary fusion device, the neutralization titration device and the detection unit; the controller is used for controlling the execution sequence of the devices and calculating the acid value according to the volume data; full-automatic detection is achieved, the labor amount is reduced, the operation speed is high, the result accuracy is high, the influence of impurities and water on oil product ...

Superconducting electron acceleration device and wastewater treatment system and method

The invention discloses a superconducting electron acceleration device and a wastewater treatment system and method. The device comprises a rack, a superconducting cavity arranged on the rack, a shielding assembly, a power source assembly and a refrigeration assembly, the shielding assembly is used for providing a vacuum environment for the superconducting cavity, and the superconducting cavity is arranged in the shielding assembly; the refrigeration assembly comprises a first-stage cold head and a second-stage cold head which extend into the shielding assembly, the first-stage cold head is connected with the second-stage cold head, a cold conduction block is arranged on the surface of the superconducting cavity, and the second-stage cold head is connected with the cold conduction block through a flexible cold chain; the power source assembly is used for providing power for the superconducting cavity and establishing a radio frequency electromagnetic field in the superconducting cavity ...

Periodontal microneedle loaded with near-infrared responsive composite bilirubin nanoparticles and preparation method of periodontal microneedle

The invention provides a periodontal microneedle loaded with near-infrared responsive composite bilirubin nanoparticles and a preparation method of the periodontal microneedle, and belongs to the technical field of composite materials. In the bilirubin-gelatin compound nano-particles, the bilirubin-gelatin compound nano-particles have good antioxidant activity, and repolarization of macrophages towards M2 is promoted by removing ROS (reactive oxygen species); folic acid can be specifically combined with an FA receptor on the surface of the M1 macrophage, so that the nanoparticles are endowed with good M1 macrophage targeting characteristics, and the bioavailability of the material is improved; the organic-metal coordination supramolecular network coating has the characteristics of anthocyanin and iron ions, and shows an anti-inflammatory and anti-oxidation treatment effect; meanwhile, the photothermal performance is achieved, near-infrared light energy can be converted into heat energy, ...

Low-pressurization hydraulic piston type hydrogen compressor

The invention provides a low-pressurization hydraulic piston type hydrogen compressor. The low-pressurization hydraulic piston type hydrogen compressor is composed of an air cylinder, a first hydraulic cylinder, a second hydraulic cylinder, a hydrogen inlet and exhaust pipeline, a nitrogen sealing and diffusing pipeline system, a hydraulic oil leakage monitoring pipeline system and a hydraulic driving system. The air cylinder, the first hydraulic cylinder and the second hydraulic cylinder are horizontally and coaxially arranged; the first hydraulic cylinder and the second hydraulic cylinder are located on the left side and the right side of the air cylinder. A piston and a piston rod are arranged in the air cylinder. The piston in the air cylinder divides an air cylinder cavity into a left air cylinder cavity and a right air cylinder cavity. And the left cylinder cavity and the right cylinder cavity are connected with a hydrogen inlet pipeline and a hydrogen exhaust pipeline. A piston rod ...

Combined distribution box

A combined distribution box belongs to the technical field of distribution boxes. The invention aims to solve the problems that an existing distribution box is small in size and internal space, and installation, wiring and maintenance of a distribution assembly are inconvenient. The back face of the mounting plate is fixedly connected with a supporting frame, the mounting plate is used for mounting a power distribution assembly, the two sides of the supporting frame are fixedly connected with guide blocks, the guide blocks are internally and movably connected with straight guide rails, the straight guide rails are fixed to the inner side wall of the power distribution box body, and the guide blocks slide on the straight guide rails. And the mounting plate is driven to stretch back and forth in the distribution box body. The device is used for power distribution assembly installation, wiring and maintenance.

Multifunctional light roof planting module

The invention relates to a multifunctional light roof planting module which comprises a shell, a water storage block and a planting block. Wherein the shell is provided with an accommodating space; the water storage block is arranged at the bottom of the containing space, and the water storage block is provided with a water storage space capable of storing rainwater; the water storage block is composed of an integrated carbonized bamboo tube, and the integrated carbonized bamboo tube is formed by integrally firing a bamboo tube formed by inserting and fixing a plurality of thin bamboo poles; the planting block is arranged in the containing space, located above the water storage block and used for planting plants. The device can be applied to various occasions, is lighter in single weight, is lower in carbon and environment-friendly, is lower in maintenance requirement, is convenient to update and replace, and can support the growth of a plurality of herbaceous plants and vine plants on ...

Data point product processing method for federal learning

The invention discloses a data point product processing method for federal learning. The method comprises the following steps: a first party preprocesses a data matrix A and diagonalizes the data matrix A to obtain a data matrix C; the first party generates a public key pk and a private key sk, performs homomorphic encryption on each row of the data matrix C by adopting the public key pk to obtain an encrypted data matrix D, and sends the public key pk and the encrypted data matrix D to the second party; the second party performs homomorphic encryption on the data column vector W by adopting the public key pk to obtain an encrypted data column vector F, and calculates a point product result of the encrypted data matrix D and the encrypted data column vector F to obtain a result column vector G; the second party sends the result column vector G to the first party, the first party decrypts the result column vector G by adopting the private key sk to obtain a data column vector Q, and the ...

Microemulsion system as well as preparation and application thereof

The invention provides a microemulsion system as well as preparation and application thereof. Wherein the microemulsion system comprises the following components: an alkali-free ultralow interfacial tension surfactant, a cosurfactant, water and kerosene; the mass ratio of the alkali-free ultralow-interfacial-tension surfactant to the cosurfactant is (5: 1)-(1: 1), the total mass concentration of the alkali-free ultralow-interfacial-tension surfactant and the cosurfactant is 5%-30% and the mass concentration of kerosene is 5%-30% on the basis that the total mass of the microemulsion system is 100%. The microemulsion system can be formed within a certain temperature and salinity range, and the preparation method is simple.

Application of 2, 6-dibromoanthraquinone

The invention discloses an application of 2, 6-dibromo-anthraquinone, and particularly relates to an application of 2, 6-dibromo-anthraquinone as a photocatalyst in preparation of 2, 5-furandicarboxaldehyde through photocatalytic oxidation of 5-hydroxymethylfurfural. Under the reaction condition of normal pressure and 50 DEG C, air is used as an oxygen source, dimethyl sulfoxide is used as a solvent, and visible light drives a photocatalyst 2, 6-dibromo anthraquinone to perform homogeneous photocatalytic oxidation on 5-hydroxymethylfurfural to selectively prepare 2, 5-furandicarboxaldehyde. According to the method, 2, 5-furandicarboxaldehyde is prepared through a green, energy-saving and environment-friendly photocatalytic means, heterogeneous separation of the photocatalyst and the product can be achieved through simple treatment, energy consumption can be effectively reduced, the production cost can be effectively reduced, meanwhile, the catalytic effect is good, few by-products are generated ...