73results about How to "Strong controllability" patented technology

The invention discloses a two-dimensional magnetic material device and a preparation method and a regulation and control method thereof, and the regulation and control method comprises the steps: enabling ionic liquid to cover the surface of a two-dimensional magnetic material, enabling the ionic liquid to be in contact with a grid electrode, a source electrode, a drain electrode and the two-dimensional magnetic material, and continuously applying current from the grid electrode to the source electrode and to the drain electrode, and the regulation and control of the two-dimensional magnetic material device are completed. According to the two-dimensional magnetic material device and the preparation method and the regulation and control method thereof provided by the invention, the ionic liquid containing the cationic molecular chains with different lengths is selected to perform intercalation on the two-dimensional magnetic material device, so that regulation and control on the two-dimensional magnetic material device are realized, and the regulation and control flexibility of the two-dimensional magnetic material is greatly improved; and the coercive field, the magnetic anisotropy energy and the carrier concentration of the two-dimensional magnetic material can be changed.

The invention discloses an ionic liquid modified polyimide nanofiber film and an air purification filter screen based on the ionic liquid modified polyimide nanofiber film, and belongs to the technical field of film filtering materials. The preparation method comprises the following steps: firstly, selecting a diamine monomer and a dianhydride monomer to carry out low-temperature polycondensation reaction, and then carrying out solvent replacement and freeze drying to obtain polyamide acid powder; dissolving the powder to obtain a polyamide acid spinning solution, preparing an ionic liquid / polyamide acid spinning solution on the basis, and carrying out electrostatic spinning to obtain an ionic liquid / polyamide acid nanofiber membrane; and finally, carrying out high-temperature thermal imidization treatment to prepare the ionic liquid / polyimide nanofiber membrane. The method is simple and efficient, the problems of low resistance, high pressure drop and the like of a traditional nanofiber film in air filtration are solved, development and application of the nanofiber film in the field of air filtration are further widened, and the nanofiber film has important scientific significance and application value in the fields of high-temperature filtration, gas adsorption and the like.

The invention discloses a method for realizing pure pore size regulation and control of a silicon carbide ceramic membrane, which comprises the following steps of: a) adding silicon carbide, sodium carboxymethyl cellulose and a dispersing agent into water, and uniformly ball-milling to obtain spraying slurry; and b) spraying the spraying slurry to the surface of a silicon carbide ceramic membrane to be regulated and controlled, naturally airing, carrying out vacuum drying at 75-85 DEG C for 2-5 hours, putting into a high-temperature furnace, carrying out vacuum sintering at 800-1200 DEG C for 1-3 hours, putting into a muffle furnace, and carrying out oxidation sintering at 700-900 DEG C for 25-45 minutes. According to the method, the pore size of the silicon carbide ceramic membrane can be subjected to pure regulation and control, operation is easy, cost is low, large-scale production is easy to achieve, the influence on the thickness of an original membrane is small, the membrane layer firmness is good, the filter flux of pure water is still high, and the application value of the silicon carbide ceramic membrane in water treatment is remarkably improved.

A spinel-structured multi-component composite oxide catalyst comprises active metals and base metals, and the active metals are 2-5 of iron, cobalt, nickel, ruthenium, molybdenum, manganese, platinum, palladium and chromium; the base metal is a composite metal oxide formed by two or three mixed metals of magnesium, aluminum, zinc, manganese, iron, cobalt, titanium, chromium and nickel; the particle size of the active metal particles is 2-50 nanometers, more preferably 2-20 nanometers. The catalyst has the characteristics of high transition metal content, uniform active site distribution, small crystal grain, large specific surface area, sintering inhibition, good stability and the like, and high-magnification synthesis of carbon nanotube powder is realized by cracking hydrocarbon carbon source gas.

The invention provides a super-lens based on a double-coupling structure, and relates to the field of optical zooming, the super-lens comprises a substrate and a phase wave front arranged on the substrate, the phase wave front is composed of a plurality of nano-columns arranged periodically, a corresponding phase distribution value is given according to the position point of each nano-column, and the phase distribution value is calculated according to the position point of each nano-column. The phase wavefront is arranged on the substrate, the phase wavefront is arranged on the substrate, the phase wavefront is arranged on the phase wavefront, the nanometer columns are arranged on the phase wavefront to convert plane waves incident to the phase wavefront into light beams focused at a specified focal length, each nanometer column has the same rectangular cross section, a slit is formed in the long axis direction of each nanometer column, and the slits penetrate through the nanometer columns and extend to the surface of the substrate. And thus, the nano-columns form a double-coupling structure. According to the invention, the focusing efficiency of the super lens can be improved.

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 invention relates to the technical field of energy conversion materials, and discloses a metal organic framework nano material with adjustable photo-thermal performance and a preparation method of the metal organic framework nano material. According to the method, two ligands with different functional groups, namely 2-aminoterephthalic acid and 2-fluoroterephthalic acid, are used for regulating and controlling the near-infrared light absorption capacity of the metal organic framework, so that the photothermal conversion temperature is accurately controlled by changing the proportion of the ligands. Compared with the traditional mode of improving the photo-thermal performance by depending on changing the optical power density, the metal organic framework nano material provided by the invention has remarkable advantages in the aspects of preparation process, structure controllability and photo-thermal conversion performance regulation and control.

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 belongs to the technical field of medicines, and discloses a garlic powder medicine capsule as well as a preparation method and application thereof. The garlic powder medicine capsule is prepared from garlic powder, a gelatin solution, a chitosan hydrochloride solution, an alginate solution and a calcium chloride solution through 3D printing. The encapsulation efficiency of the 3D printing garlic powder medicine capsule on the garlic powder is remarkably improved. The generation and development of hepatic fibrosis are improved by adjusting the intestinal-hepatic axis to influence the stability of the micro-ecology of the liver, and the pharmaceutical composition has huge commercial development and clinical treatment prospects.

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 utility model provides a cutter. The two sides, in the height direction, of the cutter are a blade point and a cutter back respectively, the cutter comprises a first cutting action area connected with the blade point, at least one surface, in the thickness direction of the cutter, of the first cutting action area is a convex arc surface, the first cutting action area has a first preset height H1, and H1 is larger than or equal to 0.3 mm and smaller than or equal to 0.5 mm. According to the cutter provided by the embodiment of the invention, the cutter has long lasting and sharp service life, and the user experience is good.

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%.

The application belongs to the technical field of cell culture, and discloses a T cell activation and expansion method based on self-adaptive liquid-liquid interface and application thereof. The application provides application of a liquid-liquid interface culture system in T cell activation and expansion, wherein the liquid-liquid interface comprises a two-dimensional liquid-liquid interface and a liquid-liquid interface microsphere, both of which can form a protein nanofilm at an oil-water interface, and the protein nanofilm is used to load molecules providing T cell receptor activation signals and / or molecules providing T cell costimulatory signals, so as to construct a self-adaptive T cell activation interface with dynamic molecular display capability. Compared with a traditional rigid solid culture dish and a magnetic bead system, the liquid-liquid interface has fluidity, molecular migration and interface responsiveness, and is more conducive to T cell receptor aggregation, formation of an immunological synapse-like structure and synergistic integration of T cell receptor activation signals and costimulatory signals.

The invention relates to the technical field of warehouse management, in particular to an internal monitoring and management system for agricultural product warehousing, which comprises a gate sentry management system, the gate sentry management system is in data connection with a quality inspection management system, and the quality inspection management system is in data connection with an automatic metering system. The automatic metering system is in data connection with a financial system, the financial system is in data connection with a gate sentry management system, the gate sentry management system, the quality inspection management system and the automatic metering system are in data connection with a video monitoring system, and the video monitoring system is in data connection with a video monitoring module and is used for multi-directional monitoring, recognition and early warning. According to the invention, the purchasing process is more standard and standardized, the working efficiency is greatly improved through accurate control and optimization of each link, the service management level is also improved, a strong tracing function provides a solid guarantee for the safety, high efficiency and order of grain purchasing, and the stability and reliability of grain quality are ensured.

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 present invention relates to the field of heterogeneous catalysis technology, and in particular to a Co-N-C catalyst for catalytic conversion of 5-hydroxymethylfurfural and a preparation method thereof, wherein the catalyst is composed of a three-dimensional multi-level Co nanostructure anchored on a nitrogen-doped carbon material substrate, wherein the primary nanoparticles composed of Co-N-C are agglomerated into secondary nanoparticles, and the secondary nanoparticles are connected to form a three-dimensional porous coral-like structure. The preparation method of the catalyst includes: S1, mixing hexadecyltrimethylammonium bromide as a structural inducer with cobalt metal salt, zinc metal salt, and 2-methylimidazole; S2, subjecting the mixed powder obtained in step S1 to high-temperature carbonization pyrolysis treatment to obtain a Co-N-C catalyst. The Co-N-C catalyst provided by the present invention has efficient catalytic performance and can catalytically oxidize HMF to 2,5-furandicarboxylic acid with 100% selectivity and 100% conversion rate.

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.

The invention provides a mesoporous carbon carrier, a preparation method thereof and a catalyst for a fuel cell, and the preparation method of the mesoporous carbon carrier comprises the following steps: loading carbon source powder, placing the carbon source powder in an inert gas environment for electrifying treatment, and performing electrochemical etching on the carbon source powder to form a mesoporous structure; activating the carbon source powder subjected to electrochemical etching by adopting an oxidizing agent so as to introduce oxygen-containing functional groups on the outer surface of the carbon source powder and the inner surface of the mesoporous structure; and calcining the activated carbon source powder to graphitize the carbon source powder to obtain the mesoporous carbon carrier. The preparation method is simple to operate, the pore structure of the prepared mesoporous carbon is controllable, and the catalyst can have high catalytic activity and stability.

The invention relates to the technical field of catalysts, in particular to a layered composite metal hydroxide and a preparation method thereof, a layered metal catalyst and a preparation method thereof, and a preparation method of a carbon nanotube. The preparation method of the layered composite metal hydroxide comprises the following steps: in the presence of a solvent, mixing soluble divalent metal ions, soluble trivalent metal ions and soluble hexavalent metal acid radicals, and adjusting the pH value to 6-11; reacting at 25 to 150 DEG C; and drying to obtain the layered composite metal hydroxide. By means of controlling raw materials and regulating and controlling reaction temperature and pH parameters, the purpose of regulating crystal nucleation quantity and crystal growth sites is achieved, so that regulation and control on an assembly structure of the layered composite metal hydroxide are realized. Compared with an existing regulation and control means, the method has the advantages of being easy to operate, easy to amplify and good in regulation and control effect, and can be used as a catalyst for preparing the carbon nano tube subsequently.

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 discloses a laminated structure color light-emitting device regulated and controlled by a common grid electrode, and the device comprises a light-emitting pixel point which comprises a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit, and each of the red light-emitting unit, the green light-emitting unit and the blue light-emitting unit comprises a first electrode, a light-emitting function layer and a second electrode; a red gate insulation layer is arranged above the red light-emitting unit, a red gate regulation and control electrode is arranged above the red gate insulation layer, and the green light-emitting unit and the blue light-emitting unit are arranged in the same way; a first high-resistance lead is connected between the red grid regulation electrode and the green grid regulation electrode in the same light-emitting pixel point, and a second high-resistance lead is connected between the green grid regulation electrode and the blue grid regulation electrode in the same light-emitting pixel point; the blue grid regulation and control electrodes are uniformly connected to a first point, and the red regulation and control electrodes are uniformly connected to a second point. The integrated structure of the grid regulation and control circuit is effectively simplified.

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.