28results about How to "Strong controllability" patented technology

The invention relates to the technical field of optical fiber wireless communication and mobile forward transmission, in particular to a digital analog optical fiber wireless forward transmission transmitting end parameter self-adaptive optimization method and system based on reinforcement learning. Decomposing the normalized wireless signal into digital parts of all levels and a final analog residual error part through multi-level modulation, and transmitting the digital parts and the final analog residual error part in a time division multiplexing manner; a receiving end represents inter-symbol interference caused by link nonlinear distortion and bandwidth limitation, and the signal-to-noise ratio of a recovery signal is calculated based on the error vector amplitude. Parameters of a transmitting end are optimized and modeled into a Markov decision process, states comprise rounding factors, scaling factors, constellation forming factors and pre-equalization filter tap coefficients of all levels, and actions are discrete increments of the parameters; a reinforcement learning agent is constructed by using a dual deep action value network, and training is updated in combination with experience playback and a target network. The reward function comprises a threshold satisfaction item and a signal-to-noise ratio change item; parameters are interactively updated in the training stage, and online self-adaptive adjustment is performed in the reasoning stage.

This invention provides a coal tar pitch-based nickel catalyst, its preparation method, and its application, belonging to the field of solid waste resource recycling and synthetic carbon materials technology. This invention uses a mixed roasting method to prepare a coal tar pitch-based nickel catalyst with micropores and mesopores from the residual coal tar pitch after coal tar extraction. The synergistic effect of active nickel as an active site and the functional groups on the support surface significantly improves its catalytic liquefaction performance, exhibiting the advantages of "low cost, high temperature resistance, and strong adaptability." The preparation method provided by this invention not only offers an effective way for the high-value recycling of coal tar pitch but also provides a low-cost material for green conversion, environmental governance, catalysis, and other fields. It represents a green resource utilization strategy with significant economic and environmental benefits and broad commercial prospects.

The application provides a carbon-based gallium monatomic material for electrocatalytic oxygen reduction synthesis of hydrogen peroxide, the carbon-based gallium monatomic material is composed of carbon atoms, oxygen atoms and gallium atoms, does not contain gallium oxide form, has a Ga-O-C structure, and the three atoms are uniformly distributed; the gallium atoms and the oxygen atoms are bonded in the form of a covalent bond, and the oxygen atoms are bonded with the carbon atoms; the gallium atoms are uniformly dispersed on the carbon-based base material in the form of monatomic atoms. The carbon-based gallium monatomic material provided by the technical scheme of the application is used for electrocatalytic oxygen reduction synthesis of hydrogen peroxide, only C, O and Ga three elements are present in the prepared carbon-based gallium monatomic material, and the three elements are uniformly distributed in the form of monatomic atoms and are free of agglomeration and crystallization, the carbon-based gallium monatomic material has high conductivity of carbon material, overcomes the defects that a homogeneous catalyst is unstable and is prone to agglomeration, and simultaneously, compared with other heterogeneous catalysts in the prior art, the catalytic selectivity has good controllability and the catalytic selectivity is greater than 90%.

The invention discloses a multi-layer automatic seedbed system which comprises a rack main body and is characterized in that a motor assembly seat is fixedly mounted on the lower side of the rack main body, a servo motor is fixedly mounted on the motor assembly seat, a driving gear is arranged at the driving end of the servo motor, and the driving gear is in meshed connection with a first transmission chain; the invention relates to the technical field of automatic seedbeds, and has the beneficial effects that a multi-layer metal frame forms a framework of a system, provides stable support and realizes intensive utilization of a vertical space, and a chain and chain wheel conveying system is a key for realizing automation. The system can drive the seedling raising plates to horizontally move or vertically ascend and descend among all the layers, the space efficiency is extremely high, the most prominent advantage is that through three-dimensional stacking, the production capacity of the unit occupied area is multiplied, and the system is very suitable for intensive production in environments such as greenhouses and plants with high space cost.

The invention relates to a construction method of an OriCiro cell-free cloning system based on an RCR technology, and belongs to the technical field of molecular biology. The construction method comprises the following steps: expression and purification of high-activity Tn5 transposase, transposon-mediated oriC insertion, RCR amplification, traceless excision of oriC transposon and repair cyclization. The construction method provided by the invention provides a rapid, reliable and mutation-burden-free new genome construction and rescue path for the existing research, can solve the difficult problem of construction of large-size and toxic DNA sequence vectors for gene therapy, shortens the research and development and production periods, and improves the production efficiency. Therefore, a powerful tool is provided for the fields of preparation of mRNA vaccines or therapy plasmids, construction of gene therapy vectors, supply of pharmaceutical-grade plasmid DNA, research of a virus molecular mechanism and the like.

The application discloses a hard carbon negative electrode active material and a preparation method and application thereof. The preparation method of the hard carbon negative electrode active material comprises the following steps: (1) dissolving gelatin and a reducing sugar in water to obtain an electrostatic spinning solution; (2) performing electrostatic spinning on the electrostatic spinning solution by taking an aluminum foil as a receiving base material to obtain an electrostatic spinning nanofiber membrane, and then performing standing to completely volatilize water, so that a gelatin-based nanofiber negative electrode precursor is formed; and (3) performing pre-carbonization treatment on the gelatin-based nanofiber negative electrode precursor in a nitrogen atmosphere, and then performing high-temperature carbonization, so that the hard carbon negative electrode active material is obtained after cooling. The hard carbon negative electrode active material prepared by the method can realize the controllability of the pore structure and the carbon-hydrogen microstructure of the hard carbon negative electrode active material, the prepared hard carbon negative electrode active material does not need a support body and a binder, the weight and the volume of the electrode can be reduced, and the overall energy density and the power density of the battery can be improved.

The application discloses a perovskite type medium-temperature desulfurizer and a preparation method and application thereof. The perovskite type medium-temperature desulfurizer comprises a carrier and an active component loaded on the carrier; the carrier is a perovskite type material; raw materials of the perovskite type material include metal salt A, tetra-n-butyl titanate and sodium hydroxide; raw materials of the active component are metal salt B, which is loaded on the perovskite carrier through an impregnation method; the metal salt B is selected from transition metal salt, and the mass percentage of the transition metal salt in the perovskite type material is 1% to 30%. The perovskite type medium-temperature desulfurizer prepared by the application has the best medium-temperature desulfurization effect, and the medium-temperature desulfurization effect can reach more than 99%.

This application discloses a knitted fabric and a method for manufacturing the same, as well as a knitted shoe upper. The knitted fabric includes at least one radially elongated hole; wherein the radially elongated hole is formed by misalignment of adjacent but not completely adjacent first and second fabric regions, and is surrounded by the first and second fabric regions; wherein the adjacent boundaries of the first and second fabric regions are hidden on the back edge of the first and / or second fabric regions by loop knitting or tuck knitting with hanging yarn based on floats formed by the misalignment. The knitted fabric of this application has smooth edges on the radially elongated holes and no floats are left.

The utility model relates to the technical field of lifting equipment, in particular to a trolley chassis with a boom type steering structure. A trolley chassis with a boom type steering structure comprises steering wheels used for controlling and driving a trolley to move and steer, power wheels used for controlling and driving the trolley to move and brake, a frame used for installing the steering wheels, the power wheels and a control system assembly of the power wheels, and the steering wheels are controlled to swing through a swing oil cylinder and achieve steering control. The two ends of the swing oil cylinder are connected with the steering wheels on the two sides of the vehicle frame in a control mode and are synchronously controlled in a telescopic mode. The two ends of the two-way oil cylinder are connected with the steering wheels on the two sides of the frame respectively, synchronous stretching and retracting and same-angle steering of the steering wheels on the two sides are achieved through driving of the hydraulic system, the problem that steering is not synchronous due to mechanical gaps, response lag and the like in a traditional multi-motor or multi-steering-engine system is effectively solved, the advancing track of the trolley is more accurate, and the stability is higher. And the stability and the safety during steering are obviously improved.

The utility model relates to the technical field of automotive trim cleaning, in particular to an adjustable automotive trim cleaning treatment assembly which comprises a rectangular top seat, a grip is fixedly connected to the top wall of the top seat, a pair of rectangular storage seats is detachably arranged at the bottom of the top seat, and the top wall of the top seat is fixedly connected with the grip. And bristles are adhered to the lower wall of the storage seat. The storage seats are clamped through the clamping grooves and the buckles, the two storage seats are clamped to the top seat respectively, assembling and disassembling are convenient and fast, after disassembling and assembling, the top seat and one storage seat are assembled, the wiping face can be reduced, and the automobile interior cleaning device is used for cleaning a small space area in an automobile interior and is higher in cleaning adaptability and adjustability.

This invention discloses a hot isostatic pressing densification method for impregnated coating of ball valve cores, belonging to the field of metal surface coating technology. The method specifically includes the following steps: (1) substrate pretreatment and coating preparation; (2) activation of the coating's thermoplastic state; (3) encapsulation-type near-isostatic pressing densification treatment; and (4) unloading, cooling, and finishing. The core of this invention lies in the synergistic effect of "thermoplastic softening" and "uniform pressure application with full spherical encapsulation." By applying a uniform pressure of approximately isostatic pressure to the coating in its thermoplastic state, the internal pores are efficiently closed, improving the coating's density and overall mechanical properties without damaging the coating's integrity or the workpiece's geometric accuracy.

The utility model discloses a line head V -shaped shaping mechanism for ignition head relates to ignition head production technical field, this line head V -shaped shaping mechanism for ignition head includes base, the top of base is provided with lifting mechanism, the top of lifting mechanism is provided with bottom plate, the top of base is seted up with first installation slot, the both sides of bottom plate top and located first installation slot are all provided with positioning column, the inside of first installation slot is provided with drive mechanism, the outside of positioning column is provided with clamping mechanism. The utility model drives the screw rod to rotate with the help of motor, and then drives slider and guiding piece to remove, and the outside shape of guiding piece guides the rolling of the roller, realizes two clamping pieces synchronous rotation clamping wire, and the whole process mechanical transmission is stable, and the clamping force and position controllability are strong, in the clamping process, guiding piece drives V -shaped piece to remove, can separate the two sub -wire of wire and present V -shaped, need not additional process and equipment, has simplified the operation procedure.

This invention discloses a slow-release granule formulation of sodium alginate-biochar loaded with thiamethoxam, its preparation method, and its application. The slow-release granule uses biochar as the adsorbent carrier to adsorb thiamethoxam and sodium alginate as the encapsulating material, which is then cross-linked and solidified by dripping calcium chloride solution. The mass ratio of biochar to thiamethoxam is (10~30):1, the mass-to-volume ratio of sodium alginate to water is 1.5~2.0 g:100 mL, and the concentration of the calcium chloride solution is 1.5%~3.0%. The prepared slow-release granule has a cumulative release time of over 90 hours in distilled water, with no obvious burst release phenomenon. Pot experiments show that it maintains a continuous control effect on eggplant thrips for 7 days after application, which is superior to conventional spraying treatment. This invention has a simple preparation process, is environmentally friendly, and has excellent slow-release performance, making it suitable for green control of agricultural pests.

The invention relates to the technical field of natural gas purification and gas separation, and discloses a ternary composite absorbent and application thereof, and a method for separating mixed gas of CO2 and CH4. The ternary composite absorbent consists of a first component, a second component and a solvent, the first component is 2-amino-2-methyl-1-propyl alcohol, and the second component is 2-amino-2-methyl-1-propyl alcohol; the second component is selected from at least one of piperazine, triethylene glycol, N-methyl pyrrolidone and 2-methylimidazole; the solvent is ethylene glycol. The ternary composite absorbent provided by the invention further inhibits CH4 co-absorption while ensuring the CO2 absorption capacity, can realize higher beta selectivity, and can be regenerated and recycled under the condition of lower temperature rise.

The application belongs to the technical field of Fe-Ni alloy foil, and particularly relates to a negative electrode current collector Fe-Ni alloy foil and a preparation method thereof. In the Fe-Ni alloy foil, the mass percentage of iron is 35-65%, the mass percentage of nickel is 35-65%, and the sum of the mass percentages of the two is greater than or equal to 99% and less than or equal to 100%. The application aims to solve the technical problems of poor mechanical properties of the Fe-Ni alloy foil in the prior art and poor controllability of Fe and Ni content in production, and provides an Fe-Ni alloy foil with excellent mechanical properties and controllable Fe and Ni content.

The application discloses an inductance energy storage type pulse power supply with improved energy efficiency and belongs to the technical field of electromagnetic emission. The pulse power supply comprises a primary power supply module, an intermediate energy storage module, a reverse flow loop module, an energy self-recovery module, a load current opening and shutting module and a voltage polarity recovery module; the primary power supply module provides energy for charging the intermediate energy storage module; the reverse flow loop module is used for disconnecting the primary power supply module when the current of the intermediate module reaches a preset value; the energy self-recovery module is used for converting the energy self-recovery of a capacitor; the load current opening and shutting module is used for turning on and shutting off the load current; and the voltage polarity recovery module is used for recovering the voltage polarity of the primary power supply module. The inductance type pulse power supply disclosed by the application has the advantages of high energy efficiency, recycling of inductance and load current tail wave energy, tail wave cutting function, few circuit elements, good circuit expandability, strong repeatability and the like.

The application relates to the computer technical field and is particularly applied to a motion control scene in an artificial intelligence system in a production field. A simulation machine actuating cylinder motor power regulation method and system, an electronic device and a storage medium are disclosed, which comprise the following steps: setting basic parameters and establishing a multi-dimensional sensor error correction model; collecting and calibrating multi-source data such as motors, cockpit attitudes, loads, environments and abnormal sounds in real time; calculating real-time power requirements and power adaptation degrees based on a coupling model of operating actions, loads and power; fusing a tensor self-encoder and a gradient boosting tree to perform power deficiency risk prediction and abnormal sound grading early warning; adopting a multi-modal power regulation mechanism according to the prediction and determination results to implement temperature rise, overload and frequent regulation protection; collecting data after regulation to close loop correct the model and perform incremental updating. The scheme suppresses abnormal sound, improves power matching and system stability, and supports rapid adaptation of different types of simulators.

The utility model discloses an anti-scale fuel gas heating furnace for an oil field. The anti-scale fuel gas heating furnace comprises a heating furnace and an anti-scale system, the anti-scale system comprises a circulating water pump, a dosing tank, a liquid taking pipe, a liquid return pipe, a sleeve, a spiral flow guide rib plate and a sleeve liquid outlet; a spiral flow guide rib plate is arranged on the outer surface of the furnace tube, a sleeve is tightly attached to the outer edge of the spiral flow guide rib plate, a sleeve liquid inlet is formed in the position, close to the smoke box, of the front end of the upper-layer sleeve, a sleeve liquid outlet is formed in the side, close to the combustor, of the lower-layer sleeve, a liquid taking tube inlet is formed in the inner side of a sleeve elbow, and a liquid taking tube outlet is communicated with a circulating water pump inlet. An outlet of the circulating water pump is communicated with an inlet of the liquid return pipe; an outlet of the liquid return pipe is communicated with the sleeve liquid inlet; an outlet of the dosing tank is communicated with a circulating water pump inlet pipe through a pipeline; by additionally arranging the sleeve and the spiral flow guide rib plate, boiler water is in a high-speed rotational flow state on the surface of the boiler tube, the flow speed of the boiler water on the surface of the boiler tube is remarkably increased, and a good scale inhibition and prevention effect can be achieved.

The present application relates to the technical field of hydrogen evolution by water electrolysis, and particularly relates to a bimetallic@vacancy type ZIF-8 composite material, a preparation method and application. The bimetallic@vacancy type ZIF-8 composite material comprises vacancy type ZIF-8 and Ru and Pt atomic level active sites anchored on the surface of the vacancy type ZIF-8, the Ru and Pt are dispersed on the surface of the vacancy type ZIF-8 in the form of single atoms or double-atom near neighbors, and no metal crystal phase is formed. The present application utilizes the precise anchoring and spatial confinement effect of the metal coordination unsaturated vacancy on the vacancy type ZIF-8 on the Ru atoms and Pt atoms, so that the Ru sites and Pt sites are distributed in near-neighbor distribution on the atomic scale and form an interface electronic coupling effect, thereby simultaneously breaking through the kinetic bottleneck that a single metal site is difficult to consider water dissociation and hydrogen desorption, and solving the technical problems of low utilization rate of noble metal atoms, insufficient activity of single metal catalyst and slow alkaline HER kinetics in the prior art.

The utility model relates to the technical field of clamping wheels, in particular to an integrated clamping wheel, which comprises an outer ring, an inner ring, an inner ring and an outer ring, the inner ring comprises an inner ring a and an inner ring b, the inner ring a and the inner ring b are both rotationally installed in an inner hole of the outer ring, and the inner ring a and the inner ring b are both rotationally installed relative to the outer ring through pin rollers; the inner ring a and the inner ring b are installed in a relative rotation mode, the outer ring is provided with a lubricating oil way in the radial direction, the lubricating oil way is used for injecting lubricating oil to lubricate the pin roller, and the technical problems that in the prior art, a clamping wheel is generally prone to deviation, and noise and abnormal sound are generated or walking is not smooth due to long-term use abrasion are solved.

This invention relates to the field of controllable preparation of macroscopic composites of carbon nanomaterials, specifically a method for defect-induced synthesis of composite films of carbon nanomaterials with embedded metal nanoparticles. Defects are controllably created on high-quality carbon nanomaterial films using methods such as plasma etching and chemical oxidation. Under heating conditions, different metal targets are bombarded by magnetron sputtering, causing nucleation and growth of metal clusters / nanoparticles at the defects, resulting in a composite film with monodisperse metal nanoparticles embedded in the carbon nanomaterial. By controlling the defects in the carbon nanomaterial and the magnetron sputtering process conditions, the dispersion and size of the metal nanoparticles can be adjusted, making their size precisely tunable in the sub-nanometer to ten-nanometer range. The metal nanoparticles of different compositions embedded in the carbon nanomaterial film prepared by this method exhibit stronger interactions between the metal particles and the carbon nanomaterial support, showing broad application prospects in energy storage and conversion, sensing and monitoring, catalysis, and other fields.

The invention belongs to the technical field of fuel cells, and provides an aperture-adjustable sulfur-nitrogen co-doped mesoporous carbon material for a fuel cell and a preparation method and application thereof.The preparation method comprises the steps that organic magnesium salt, a polyhydroxy compound capable of being fused and gelatinized at the temperature of 200-300 DEG C and a compound containing sulfur and nitrogen element compound-urea are used as raw materials; after dissolving and uniformly mixing, carrying out heating polymerization and microwave-assisted uniform dispersion; gradually converting the mixed solution into a uniform gel precursor along with the volatilization of the solvent; and grinding into powder, carrying out three-section gradient carbonization program heating carbonization treatment under the protection of inert atmosphere, and removing the template through acid pickling to obtain the target product. According to the present invention, the directional adjustment of the mesopore size and the pore size distribution is achieved, and by using the mesoporous structure as the fuel cell cathode catalyst carrier, the mass transfer path can be effectively optimized by using the high specific surface area and the adjustable mesoporous structure, and the oxygen reduction reaction activity, the polarization performance and the long-term stability can be significantly improved.

The invention provides a silane modified zinc negative electrode material grafted with a covalent organic framework protective coating as well as a preparation method and application of the silane modified zinc negative electrode material. The preparation method comprises the following steps: adding a zinc foil into a pretreatment solution of an ethanol-water mixed solution in which an alkyl chain extender is dissolved, reacting, adding a silane coupling agent, continuously reacting, washing and drying to obtain a silane modified zinc negative electrode; and adding the silane-modified zinc negative electrode into a reaction solution in which an aldehyde monomer and an amine monomer are dissolved for reaction, and performing washing, Soxhlet extraction and drying to obtain the silane-modified zinc negative electrode material grafted with the covalent organic framework protective coating. The silane modified zinc negative electrode material disclosed by the invention is strong in interface bonding force, high in ion transmission efficiency, excellent in dendritic crystal inhibition effect, simple and controllable in process, easily available in raw materials and suitable for large-scale production; and when the material is applied to the aqueous zinc ion battery, the material has excellent cycling stability and electrochemical performance, and a key material support is provided for industrialization of the high-performance aqueous zinc ion battery.

The application discloses a kind of synergistic toughening and improving glass transition temperature core-shell nanoparticles / dynamic polyimide composite, the formula of the composite includes matrix phase polyimide resin and reinforcing phase polymer core-shell nanoparticles.Preferred raw materials include p-xylylene, triamine crosslinking agent, diamine, polymer core-shell nanoparticles and the like.The preparation route includes: first, polymer core-shell nanoemulsion is phase transferred or directly core-shell nanoparticles are compounded with dynamic polyimide polymer material to modify, the toughness, glass transition temperature and contact angle size of modified dynamic polymer material are significantly improved.The application provides a new means for the composite modification of dynamic polyimide material, and is expected to further broaden and deepen its application in resin matrix, composite and other fields.

The invention relates to the technical field of metal polishing, in particular to a high-brightness polishing method for a spherical pure gold material, which comprises the following steps: S1, hardening the material; s2, preparing a hard grinding disc; s3, rough grinding; s4, rough polishing; s5, fine polishing; s6, repeated soft polishing is conducted, specifically, the gold piece obtained after fine polishing is slightly wiped clean with soft cloth, the gold piece is soaked or smeared with aqua regia at the normal temperature for 20-30 s and then washed clean with purified water, a soft polishing disc is used for continuous soft polishing of the gold piece for 2-3 min, and the position of the gold piece is continuously changed during the period; repeating the step S6 for 6-8 times; and S7, cleaning, wherein the gold part with the high-quality mirror surface effect is obtained after the gold part is wiped dry with purified water. The concave grinding disc used in the polishing method is simple in structure and easy to manufacture, and the method is high in operability and controllability, low in machining cost, high in machining efficiency, good in machining precision and easy to popularize and use in the industry.

The invention discloses a preparation method of hollow nano silicon dioxide / nano cellulose based hydrophobic nano paper. The preparation method specifically comprises the following steps: step 1, preparing softwood pulp fibers; step 2, preparing nano paper; step 3, preparing SiO2 modified nano paper; step 4, preparing a mixed solution B with DCM as a solvent and PLA as a solute; and step 5, preparing to obtain the hydrophobic nano paper. The nano paper prepared by the method has certain mechanical strength and flexibility, and also has stable and lasting hydrophobic performance, and the application range of the paper in the fields of humid environment, oil-water separation, water resistance and fouling resistance is widened. The invention further discloses the hollow nano silicon dioxide / nano cellulose based hydrophobic nano paper.

The application discloses a modification method for realizing the conductivity of basalt fiber. The method forms a conductive polymer on the surface of the basalt fiber through an in-situ polymerization method, so that the basalt fiber is endowed with conductivity. The method can control the particle size of the conductive polymer, the coating thickness and the conductivity of the basalt fiber by adjusting experimental parameters such as the types and concentrations of monomers, oxidants and dopants and the polymerization reaction time. The method is simple and efficient in manufacturing process, and is strong in controllability of structure and performance. The modified basalt fiber has good conductivity, and the resistivity of the basalt fiber is adjustable in the range of 1~10 ‑3 Ω·cm, which widens the application of the basalt fiber in the fields of electromagnetic shielding and electrostatic protection. Moreover, the method does not damage the structure of the fiber itself while realizing the conductivity of the basalt fiber, and improves the mechanical performance of the basalt fiber to a certain extent.

This invention belongs to the field of polymer material preparation and nanomaterial processing technology, specifically relating to a method for preparing polyvinyl alcohol (PVA) nanoparticles. The method for preparing PVA nanoparticles provided by this invention includes the following steps: mixing PVA powder raw material with hot water to obtain a hot aqueous solution of PVA; adding the hot aqueous solution of PVA dropwise to pretreated acetone under stirring conditions to induce precipitation and obtain a suspension; performing solid-liquid separation on the suspension, and drying the resulting solid phase to obtain the PVA nanoparticles. This preparation method uses commercially available PVA as raw material and is simple, mild, and easily repeatable.