311results about How to "Reduce interaction" patented technology

The invention relates to the technical field of metal mine ultra-deep vertical shaft construction, in particular to an advanced pressure relief construction method for a metal mine ultra-deep vertical shaft, aims to solve the problems that the construction safety of a deep shaft is difficult to guarantee and the construction difficulty is high, and is used for a large-diameter vertical shaft with the depth exceeding 1500 m. The lithology and physical mechanics parameters of shaft surrounding rock are obtained by adopting methods such as shaft rock core logging, surrounding rock joint fissure investigation and rock mechanics tests; then mechanical properties of the shaft surrounding rock are analyzed, and shaft surrounding rock excavation disturbance stress field distribution characteristics are obtained; the supporting opportunity and the supporting thickness of the well wall concrete lining are determined, high stress accumulated in a rock mass is released through advanced pressure relief blasting, so that the stress state of the shaft surrounding rock of the non-lining section is actively regulated and controlled, the interaction between the shaft surrounding rock and the subsequent well wall concrete lining is weakened, and the construction difficulty is effectively reduced; various means such as shaft stratum transparency analysis and ground pressure disaster prevention and control early warning are adopted, and safety and high efficiency of digging and supporting construction of the ultra-deep shaft are guaranteed.

The invention relates to a low-temperature graphite negative electrode material and a preparation method thereof, and belongs to the technical field of high polymer materials. According to the prepared low-temperature graphite negative electrode material, firstly, the surface of graphite is pre-oxidized through potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid, and then under the action of sodium nitrate, potassium permanganate and hydrogen peroxide, graphite oxide is prepared; then, ammonium molybdate hydrate and thioacetamide are used as a molybdenum source and a sulfur source, graphite oxide is used as a supporting material, a molybdenum disulfide-graphite compound is synthesized, and the conductivity and the cycling stability are improved; secondly, the surface of the negative electrode is coated with amorphous resin carbon / nickel oxide, so that the ion diffusion efficiency of the low-temperature graphite negative electrode material is enhanced, and the electrochemical lithium storage performance is improved in a low-temperature environment; and finally, the surface of the amorphous resin carbon / nickel oxide is coated with a layer of polythiophene film, so that the rate capability of the negative electrode material is improved due to large surface area and high pores.

The present application belongs to the field of medical polymer technology, and in particular, relates to a polyacid polymer hydrogel, and its preparation method and application. The polyacid polymer hydrogel involved in the present application mainly contains a polyacid polymer aqueous phase; the preparation method provided includes first dissolving a polycarboxylic acid polymer in an alkaline solution, then dripping a pH adjuster and stirring, and standing to obtain a polycarboxylic acid polymer hydrogel. Among them, after lowering the pH of the alkaline aqueous solution of the polycarboxylic acid polymer, the polycarboxylic acid chains are entangled during the standing process, and the interaction force between the polymer chains is enhanced to form a polycarboxylic acid polymer hydrogel. This type of hydrogel has a simple source of materials and an easy preparation method, which solves the technical problems that the preparation process of the existing polycarboxylic acid-containing polymer hydrogel is cumbersome, toxic reagents are required, and the product hydrogel lacks adhesion and self-healing.

The invention relates to the technical field of photovoltaic cells, and discloses a back contact solar cell and a preparation method thereof. The preparation method comprises the following steps: providing a substrate layer of a first conductive type having a first surface and a second surface opposite to each other; a first groove is formed in the first surface, and a bulge is formed beside the first groove; performing doping treatment on the inner wall surface of the first groove to form a first doping layer; the first doped layer is of a second conductive type; forming a passivation layer on the surface of the first doping layer; a second groove isolated from the first groove is formed in the protrusion; forming a first tunneling oxide layer on the second groove; forming a second doping layer of the first conduction type in the second groove and on the first tunneling oxide layer; a first electrode and a second electrode are formed, the first electrode penetrates through the passivation layer to be connected with the first doping layer, and the second electrode is connected with the second doping layer. The first groove and the second groove which are relatively isolated are formed by grooving at different positions of the substrate layer, so that efficient current collection is facilitated, short circuit is prevented, and the photoelectric conversion efficiency and the power generation efficiency are improved.

The invention discloses a preparation method of a platinum-carbon catalyst and the platinum-carbon catalyst, and the method comprises the following steps: pretreating a carbon carrier to obtain a target carbon carrier; carrying out platinum loading on the target carbon carrier by adopting a platinum precursor to obtain an initial platinum-carbon catalyst; dipping the initial platinum-carbon catalyst in the amino compound solution to obtain a dipping mixture; the concentration of the amino compound solution is 0.1-10 mmol / L; carrying out ultrasonic treatment on the impregnated mixture for 20-30 minutes at room temperature to obtain an intermediate platinum-carbon catalyst; and carrying out vacuum drying on the intermediate platinum-carbon catalyst at 60-80 DEG C for 8-16 hours to obtain the platinum-carbon catalyst. The amino compound solution is used for modifying the catalyst, the interaction between platinum particles and an oxygen-containing intermediate in the oxygen reduction process is weakened, and the catalytic activity of the platinum-carbon catalyst is improved.

The invention belongs to the technical field of intelligent controlled-release antibacterial packaging, and particularly relates to a preparation method and application of a multi-response polymer fresh water absorption pad of a sandwich-like structure. The preparation method comprises the following steps: firstly, preparing a hydrophilic inner-layer spinning solution, a humidity response middle-layer spinning solution and a pH response outer-layer spinning solution; the hydrophilic inner layer spinning solution, the humidity response middle layer spinning solution and the pH response outer layer spinning solution are subjected to continuous electrostatic spinning to prepare a composite membrane of a three-layer nanofiber structure, namely the multi-response polymer fresh water absorption pad of a sandwich-like structure. Through the layered design, the water absorption pad integrates the functions of one-way moisture transmission, antibiosis and corrosion prevention, the preservation period of food is prolonged, self-adaptive adjustment can be achieved according to the humidity and pH change in the storage environment, the dynamic requirements of different food storage conditions are met, and the more accurate preservation effect is provided. And meanwhile, various food packaging requirements can be met, food loss is effectively reduced, economic benefits are improved, and the application prospect is wide.

The invention provides an intersecting shield interval protection construction method, which belongs to the technical field of building construction, and comprises the following steps: firstly, excavating an open cut foundation pit at an intersection, arranging a cast-in-situ bored pile and a crown beam as an enclosure structure in the foundation pit, and arranging a steel support system at the same time. And after the enclosure structure is completed, the foundation pit is excavated to the designed depth, and reinforced concrete supporting piles and pile top beams are constructed. And on the basis, a reinforced concrete protection plate is poured to form a sheet pile structure type protection structure system. And finally, foundation pit filling is completed in a backfilling mode. Before the shield passes through the cross point, a test section is arranged to collect related construction data, and preparation is made for subsequent formal tunneling. And in the actual shield tunneling process, the tunneling speed and the soil bin pressure are controlled, and synchronous grouting is conducted. And after crossing the cross point, arranging closed rings in the front and back areas, and carrying out wall back grouting by adopting double-liquid slurry. And finally, a geological radar is used for detecting the cavity and repairing, and the problem of mutual influence in up-down close-distance crossed tunnel construction is solved.

The invention discloses a distillation purification method for preparing a silane coupling agent, and belongs to the technical field of preparation of silane coupling agents. The distillation and purification method for preparing the silane coupling agent comprises the following steps: step 1, mixing a silane coupling agent crude product, tetrahydrofuran, an organic antioxidant and an auxiliary agent, heating, mixing and stirring to obtain a mixture; 2, adding the mixture into a distillation tower, heating and distilling, controlling the heating temperature and the distillation rate, and ensuring stable and continuous evaporation and condensation of the silane coupling agent; and 3, collecting the condensed liquid into a collector, separating the liquid, filtering, and drying to obtain the silane coupling agent. According to the method, the product purity and yield of the silane coupling agent can be effectively improved.

The invention discloses sampling equipment for underground water detection, and belongs to the technical field of underground water detection. The device comprises a support, a motor is fixedly connected to the upper side of the support, a rotating roller is fixedly connected to the output end of the motor, a rope is connected to the outer side of the rotating roller in a wound mode, the end of the rope penetrates through the support, a sampling barrel is fixedly connected to the end of the rope, and a fixing ring is fixedly connected to the interior of the sampling barrel. The upper side of the fixing ring is fixedly connected with an isolating ring, the outer side of the isolating ring is uniformly and fixedly connected with a plurality of groups of isolating plates, and the plurality of groups of isolating plates are fixedly connected with the fixing ring and the sampling barrel. In the sampling process, the driving plate and the driven plate are driven to move through the electric push rod, so that differential speed occurs between the driving plate and the driven plate, a corresponding space is formed, the space is used for sampling operation, mutual influence between sampling every time is small, and the sampling effect is good.

The invention discloses a vanadium-doped lithium manganese iron phosphate positive electrode material as well as a preparation method and application thereof. Secondary hydrothermal treatment is adopted, so that the particle size and the size of the material can be obviously controlled, short nanorod particles of lithium manganese iron phosphate grow into nanoparticles with the length smaller than 100 nm and the width smaller than 20 nm in an oriented mode, the diffusion size of Li < + > in the [010] direction is reduced, the diffusion path of Li < + > is shortened, meanwhile, ammonium metavanadate serves as a vanadium source to carry out Fe / Mn site substitution on the lithium manganese iron phosphate positive electrode material, and the lithium manganese iron phosphate positive electrode material is obtained. The preparation method has the advantages of reducing the dissolution behavior of manganese, increasing lattice defects, improving the lattice constant, carrying out double-layer modification of morphology and structure, ensuring the migration rate of Li < + > in the charge-discharge process, and realizing the improvement of the electrochemical performance of the lithium manganese iron phosphate positive electrode material.

The invention discloses a high-entropy positive electrode material of a potassium ion battery and a preparation method and application of the high-entropy positive electrode material, the high-entropy positive electrode material is a layered oxide with a P2 / rock salt biphase symbiotic structure, the chemical general formula of the high-entropy positive electrode material is K < 0.6 > Mn < 0.75-x > Ni < 0.1 > Ti < 0.1 > Mg < x > Cu < 0.05 > O2, and x is more than 0 and less than or equal to 0.1. A high-temperature solid-phase method is adopted in the preparation process, the high-entropy layered oxide positive electrode material with symbiotic two phase structures of P2 and rock salt is finally formed by regulating and controlling the types and the content of doped elements, sliding of a TM layer in the charging process and large structural stress generated in the circulating process are relieved through introduction of a small amount of rock salt phase, and the performance of the positive electrode material is improved. And lattice distortion and cracks in particles in the long circulation process are improved, so that the electrochemical circulation stability and rate capability of the potassium ion battery are remarkably improved.

The invention relates to the field of antennas, and particularly discloses a non-interfering frequency division antenna which comprises a reference ground. The microstrip antenna is horizontally arranged above the reference ground, the microstrip antenna comprises a low-frequency antenna oscillator and a high-frequency antenna oscillator, and the low-frequency antenna oscillator and the high-frequency antenna oscillator are arranged in a laminated structure; the frequency division module is arranged between the microstrip antenna and the reference ground; the control switch is arranged between the reference ground and the microstrip antenna; and one end of the top of the reference ground is provided with an antenna feeding point which is electrically connected with the reflective filter and is used for receiving and transmitting signals. According to the non-interfering frequency division antenna, the microstrip antenna is composed of the low-frequency antenna oscillator and the high-frequency antenna oscillator, effective work of the antenna in a wide frequency band is achieved in combination with the frequency division module, mutual influence between frequencies is reduced, the microstrip antenna adopts a laminated structure design, the antenna area is effectively reduced, and the space utilization rate is improved.

The embodiment of the invention provides an oil quantity calibration method and device, a storage medium, a controller, a system and a vehicle, and the method comprises the steps: obtaining a first preset parameter set, the first preset parameter set comprises a first preset parameter pair corresponding to a first motor stator under a plurality of single motor working conditions, and the first preset parameter pair comprises torque and rotating speed; calculating a first required oil quantity based on the torque and the rotating speed of each first preset parameter pair; the first required oil quantity of each first preset parameter pair is used as a basic value, and a first target oil quantity of the first motor stator meeting the first temperature condition under the corresponding working condition is calibrated; calibrating a second target oil quantity when a second temperature condition is met under a working condition corresponding to a second motor stator load; the actual oil mass is adjusted to be consistent with the sum of the first target oil mass and the second target oil mass under the corresponding single-motor working condition, and the current total oil mass is calibrated as the target total oil mass; and the target total oil quantities under the multiple dual-motor working conditions are gathered, and an oil quantity control calibration table is formed.

The invention discloses an array substrate, a display panel and a display device. The array substrate is provided with a plurality of first signal lines extending in the first direction and a plurality of patch cords extending in the second direction. Each patch cord is connected with one first signal line; the array substrate is further provided with a plurality of shielding structures, and the shielding structures are arranged between the first signal lines and the patch cords which intersect in an insulated mode. The first direction intersects with the second direction. According to the invention, the crosstalk problem between the signal lines of the array substrate can be improved.

The invention discloses a method for improving the texture characteristics of canned abalone. After fresh abalone is taken out, cleaned, water-controlled, shaped and salt-ground, composite protease is used to decompose collagen and elastin in the abalone meat and hydrolyze connective tissue fibers. At the same time, ultrasonic treatment is used to destroy the original muscle structure, which effectively reduces the hardness value of the abalone meat. After the treatment, the abalone meat is cleaned, water-controlled, blanched, tooth-removed and graded, and then placed in a 500V DENBA+ electrostatic wave preservation system and treated at 4°C for 1h. After that, the abalone meat is subjected to metal detection, weighing and canning, vacuum sealing, can washing, sterilization and cooling, and drying. The canned abalone treated by the above steps can improve its rubber meat texture characteristics to the greatest extent, effectively ensure the moisture of the abalone meat, and maintain its nutritional components, good flavor and taste.

The invention discloses a multichannel data acquisition device, a multichannel data acquisition method and a radar system. The multichannel data acquisition device comprises M analog acquisition channels, N AD chips, an FPGA, a clock module and a DDR. Each analog acquisition channel is used for converting a single-ended analog signal into a differential analog signal; each AD chip is used for converting the differential analog signal into a digital signal; the FPGA is used for synchronously capturing digital signals output by the plurality of AD chips; performing time-frequency conversion on each digital signal to obtain a corresponding frequency domain signal; carrying out filtering processing on each frequency domain signal; and storing and uploading the signal after the filtering processing. The clock module is used for providing a reference clock for the whole device; and the DDR is used for caching the data processed by the FPGA. The problems that a time domain filtering method is complex in calculation and frequency response is difficult to control are solved.

The invention relates to an ink-jet printing ink formula and a preparation method thereof, and belongs to the technical field of ink preparation. The carbon black color paste specifically comprises the following raw materials in parts by mass: 3 to 7 parts of carboxylated carbon black, 2 to 4 parts of modified protein, 1 to 3 parts of a dispersant, 0.1 to 0.3 part of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, 0.1 to 0.12 part of N-hydroxysuccinimide, 1 to 5 parts of a 2-morpholinoethanesulfonic acid buffer solution, 0.1 to 0.3 part of an auxiliary agent and 10 to 50 parts of a composite solvent. The polyethylene glycol modified ethanol clostridium protein is used in the components, and carboxylated carbon black and the dispersing agent are combined, so that the compatibility among the components in the system is improved, and good thermal stability and system stability are achieved while the particle size of the black ink is refined.

The embodiment of the invention discloses a certificate image quality detection method and device, a computer readable storage medium and electronic equipment, and the method comprises the steps: building an encoder and a decoder through a visual state space module in advance, a lightweight target detection model is obtained by sequentially connecting the encoder, the decoder and the detection head module; therefore, the lightweight target detection model can be utilized to detect the certificate image of the target certificate of the user, so as to generate a detection result for detecting whether the certificate image of the user has a preset quality problem or not.

An electronic device, method and computer-readable storage medium for wireless communication are disclosed. The electronic device includes a processing circuit, wherein the processing circuit is configured to: determine a first node set from a service node and neighboring nodes of a user device for broadcasting or multicasting information of the user device, generate a report indicating the first node set, the report including identification information of one or more nodes in the first node set, and send the report of the first node set to the service node.

The present invention relates to the technical field of brazing furnaces, and discloses an energy-saving vacuum brazing furnace, comprising an outer cylinder, an inner cylinder arranged inside the outer cylinder, a closing cover arranged at the openings at both ends of the outer cylinder, a heating device and a support table arranged inside the inner cylinder, and a placement component, wherein the placement component specifically comprises a push chute opened at the top of the support table, a push slider arranged inside the push chute, a rotating slot and a column arranged at the top of the push slider, and a placement rack arranged at the top of the column. The energy-saving vacuum brazing furnace, by arranging the placement component, the column lifts the placement rack so that it is located at the center of the inner cylinder, and the distance from the heating device is the same on all sides, so that the parts in the placement rack are evenly heated, avoiding different parts from having inconsistent brazing degrees due to uneven heating, and avoiding uneven heating at different positions of the parts and causing offset deformation, thereby ensuring the brazing effect of the connection and improving the quality of the product.

The invention discloses an ultraviolet-visible light-near infrared compatible broadband hyperspectral snowfield camouflage fabric, which is characterized in that the fabric comprises a high ultraviolet reflection coating and a 3D spacer fabric layer infiltrated with a moisture absorption coating, the raw materials of the high ultraviolet reflection coating comprise polyvinyl alcohol and an inorganic white powdery pigment, and the raw materials of the high ultraviolet reflection coating comprise polyvinyl alcohol and an inorganic white powdery pigment. The moisture absorption coating comprises a polymer coating and a water-absorbable metal salt layer. The invention further discloses a preparation method of the broadband hyperspectral snowfield camouflage fabric compatible with ultraviolet light, visible light and near infrared light and specific application of the fabric. The 3D spacer fabric serves as a base material, the moisture absorption coating is manufactured on the surface of the 3D spacer fabric firstly, then the high-ultraviolet-reflection coating is manufactured on one side or two sides of the fabric, the prepared spectrum simulation fabric has high ultraviolet reflectivity, obvious'moisture absorption valley (water peak) 'is also simulated at 1450 nm and 1930 nm, and snowfield camouflage in a broadband range can be better met.

The invention discloses a power transformer turn-to-turn short circuit fault positioning method and system based on magnetic flux leakage distribution. The method comprises the following steps: acquiring the radial magnetic field intensity inside a power transformer; based on the obtained radial magnetic field intensity, the short circuit fault occurrence condition is judged by adopting a difference value method; when a short-circuit fault occurs, the position of the short-circuit fault point is positioned by using the position of the zero crossing point of the radial magnetic field intensity. According to the invention, the improved optical fiber sensor is used for collecting the magnetic flux leakage distribution in the power transformer, and then the amplitude and phase characteristics of the magnetic flux leakage are obtained through Fourier transform and an interpolation method. And rapid monitoring and interval positioning of the turn-to-turn short circuit fault of the power transformer are realized by monitoring the internal magnetic leakage amplitude and phase characteristics of the power transformer.

The invention discloses a driving backboard and a display panel, and belongs to the technical field of display. The driving backboard comprises a substrate, a plurality of pixel driving circuits located on one side of the substrate, a plurality of first data lines and a plurality of second data lines. The plurality of first pixel driving circuits in one column of pixel driving circuits are electrically connected with one first data line, and the plurality of second pixel driving circuits in one column of pixel driving circuits are electrically connected with one second data line. In the first direction, signal output points in the first pixel driving circuit and / or the second pixel driving circuit are distributed between the first data line and the second data line, and the minimum distance between the signal output points and the first data line and the minimum distance between the signal output points and the second data line are both larger than 0. Thus, the two data lines can provide data signals for different pixel driving circuits respectively, it is guaranteed that each pixel driving circuit has sufficient charging time, and the display effect is improved.

The invention relates to the technical field of fragmentation, and relates to a transaction processing optimization method based on a fragmented block chain. The method comprises the following steps: 1) learning historical transaction data of a hot account by using machine learning; 2) predicting the future transaction quantity of the hot account, and performing account distribution according to a prediction result; 3) the node creates a slave account state for a transaction receiver account whose account state does not exist in the fragment; 4) the node packages and processes the transactions in the transaction pool; and 5) the fragment receives the slave account states sent by other fragments, and executes an account state merging mechanism. According to the method, the transaction processing performance on the fragmented block chain can be well improved.

The invention belongs to the technical field of catalysts, and particularly relates to a novel full-fraction waste mineral oil hydrogenation catalyst and a preparation method thereof. According to the invention, polyethylene glycol is adopted as a surfactant, and a catalyst carrier with a high specific surface area is prepared through a coprecipitation process. And on the basis of the Mo-Co catalyst, a certain amount of metal manganese and cerium are added. Dispersion of active components in the catalyst is promoted through the pre-deposited cerium oxide auxiliary agent, interaction between metal and the carrier is weakened, and increase of the specific surface area of the catalyst is promoted. The addition of manganese can enhance the interaction of the components of the catalyst, and especially the formation of manganese oxide can effectively promote the dispersion of active components and prevent excessive sintering of the catalyst, thereby effectively improving the activity of the catalyst. The catalyst has the advantages of high specific surface area and pore size, high catalytic activity, effective improvement of the desulfurization and denitrification rate of the waste mineral oil, and wide application prospect.

The invention discloses a degradable polycarbonate cationic carrier and application thereof, and belongs to the technical field of drugs, the degradable polycarbonate cationic carrier is a nano-micelle formed by self-assembly of diblock polymers, the diblock polymers are represented as A-B, the A block is mPEG, and the B block is PAMA, PDMA or PDEA; the molecular weight of the block A is 2000 to 5000, and the polymerization degree of the block B is 50 to 150. The degradable polycarbonate cation carrier has an mRNA delivery function, and is combined with mRNA through a positive and negative electricity interaction principle, so that the problem of gene waste caused by mRNA loading through a microfluidic method can be solved, and efficient delivery of antigen presenting cells (APC) is realized.

The invention relates to the technical field of polyurethane rubber materials, and discloses a functional polyurethane rubber material and a preparation method thereof, the polyurethane rubber material is composed of a component A and a component B, the component A comprises the following raw materials: a functional additive and a diisocyanate monomer; the component B is prepared from the following raw materials: a tackifying modified component, 1, 3-propylene glycol, talcum powder, an anti-aging agent, dioctyl phthalate, pigment, a flame retardant, stannous octoate and zinc stearate; wherein the structure of the functional additive contains a large number of silicon-oxygen bonds, fluorine elements and tert-butyl structures; the tackifying and modifying component is a grafted compound of petroleum resin and glycidyl furfuryl ether, and all the raw materials are matched with one another, so that the prepared polyurethane rubber material has good corrosion resistance, waterproof performance and adhesive force and can meet the use requirements in various environments.

The invention discloses a smart card aging test method and device and a storage medium, and the method comprises the steps: obtaining an application selection instruction sent by a terminal, and selecting an application according to the application selection instruction; obtaining an updating self-checking instruction sent by the terminal; a write-in transaction of the application is performed according to the update self-check instruction, the write-in transaction characterizes that the first data and the second data are written into a target area respectively, and a return value is generated; and sending the return value to the terminal, so that the terminal continues the aging test or ends the aging test according to the return value. In the technical scheme of the embodiment, the terminal sends the application selection instruction and the updating self-checking instruction to the smart card, the aging test is carried out on the application set by the smart card, and only the finally generated return value needs to be sent to the terminal, so that the test freedom degree of the smart card is high, the interaction with the terminal is reduced, and the test efficiency is improved. Most aging test contents can be completed through the device, and the test efficiency is effectively improved.

The embodiment of the invention provides electronic equipment, a connecting structure and a cable. The electronic equipment comprises a first function module, a second function module and a connecting structure. The connecting structure comprises a cable, and a first connector and a second connector which are connected to two ends of the cable. The first connector is connected with the first function module, and the second connector is connected with the second function module. The cable comprises a fixing part, a plurality of cable cores and a low-loss part. The fixing part wraps the low-loss part and the plurality of cable cores. The plurality of cable cores comprise a signal cable core pair, the signal cable core pair comprises two signal cable cores which are arranged at intervals, the low-loss part is located between the two signal cable cores which are arranged at intervals in the signal cable core pair, and the dielectric constant of the low-loss part is smaller than that of the fixed part. According to the embodiment of the invention, the integrated arrangement of a plurality of cable cores can be realized, and the loss of signals during transmission on the cable can be reduced.