537results about How to "Easy to embed" patented technology

The invention belongs to the technical field of lithium ion battery negative electrode materials, and particularly relates to a method for preparing a lithium ion battery negative electrode material from sulfur-doped black phosphorus-carbon. A carbon material and sulfur powder are subjected to ball milling, uniform mixing and vacuum high-temperature calcination to obtain a sulfur-doped carbon material; and uniformly mixing the sulfur-doped carbon material with black phosphorus, and performing high-energy ball milling in an inert atmosphere to obtain the sulfur-doped black phosphorus-carbon composite negative electrode material. According to the preparation method provided by the invention, the black phosphorus, the carbon material and the sulfur are well combined, so that the high capacity of the material is ensured, the structural stability of the composite material can be improved, the polarization of the material is reduced, and the cycling stability and the rate capability of the battery are improved.

The invention relates to the field of disposable hygienic products, in particular to a paper diaper with a fluffy non-woven fabric core body of a net structure and a preparation process of the paper diaper, and mainly solves the problems that in the prior art, macromolecular water-absorbent resin particles of an online water-absorbent paper core body are difficult to enter fluffy non-woven fabric, and the strength is poor. The paper diaper body comprises a liquid-permeable surface layer, an absorption core layer and a liquid-tight bottom layer which are sequentially stacked from top to bottom; the absorption core layer comprises a first fluffy non-woven fabric, a second fluffy non-woven fabric compounded on the lower surface of the first fluffy non-woven fabric and macromolecular water-absorbent resin particles laid on the upper surface of the first fluffy non-woven fabric; at least two material storage areas are arranged on the first fluffy non-woven fabric side by side in the transverse direction, holes are punched or embossed on the first fluffy non-woven fabric in each material storage area, and the macromolecular water-absorbent resin particles comprise first macromolecular water-absorbent resin particles which are distributed in each material storage area.

The invention belongs to the field of new energy materials and devices, and particularly discloses nitrogen self-doped phenolic resin-based hard carbon microspheres and a preparation method and application thereof.The preparation method comprises the following steps that nitrogen-containing phenol monomers, aldehyde monomers and a basic catalyst are mixed according to a certain sequence, and after prepolymerization is conducted at the low temperature, the nitrogen self-doped phenolic resin-based hard carbon microspheres are obtained; carrying out high-temperature hydrothermal reaction to obtain phenolic resin microspheres; and sequentially carrying out low-temperature carbonization treatment and high-temperature carbonization treatment to obtain the nitrogen self-doped phenolic resin-based hard carbon microspheres. Compared with the existing nitrogen-doped resin hard carbon preparation method, the nitrogen-self-doped phenolic resin hard carbon has the advantages that a nitrogen source is introduced into the phenolic resin hard carbon from the source end of the resin, the production process is simplified, and uniform distribution and atomic-scale doping of the nitrogen element are realized. The material is used for sodium ion batteries, has excellent long cycle stability, good rate capability and high specific capacity, and has industrial application prospects.

The invention relates to the technical field of lithium ion batteries, in particular to a modified cobalt-free lithium-rich manganese-based positive electrode material doped with anions and cations and a preparation method of the modified cobalt-free lithium-rich manganese-based positive electrode material. According to the method, a modified lithium-rich manganese-based precursor is prepared from a metal salt solution, a precipitator, a fluorine source and a complexing agent, and the anion-cation co-doped cobalt-free lithium-rich manganese-based positive electrode material is prepared from the modified lithium-rich manganese-based precursor and a lithium source. The metal salt solution contains manganese salt, nickel salt and aluminum salt. According to the method, by doping Al and F, the voltage attenuation is effectively reduced, the long cycle performance of the material is improved, the rate capability of the material is improved, and in addition, mixed arrangement of lithium and nickel cations is effectively inhibited, so that the cycle stability is improved.

The invention discloses a digital audio watermark processing method and device, equipment and a storage medium, and belongs to the technical field of artificial intelligence. The method comprises the following steps: receiving a watermark adding instruction, and carrying out Fourier transform on original host voice to obtain an audio signal; identifying a watermark information adding bit in the audio signal through the audio watermark model, and embedding a watermark message in the watermark information adding bit; the interfering audio signal and the audio signal carrying the watermark message are combined. Receiving the message extraction signal, and separating an interference audio signal in the combined audio signal; a watermark information adding bit in the audio signal is identified, and a watermark message is extracted from the watermark information adding bit. The invention also relates to the technical field of block chains, and the host voice is stored on a block chain network. According to the method, the watermark information adding position is automatically identified through the audio watermark model, so that the watermark information is added and extracted, the dependence on expert knowledge is remarkably reduced, and the watermark processing speed and efficiency are improved.

The embodiment of the invention provides an audio watermark embedding method and device, electronic equipment and a storage medium, and belongs to the technical field of voice processing. The method comprises the following steps: carrying out attribute division on watermark attribute data to obtain watermark attribute blocks, and carrying out content division on watermark content data to obtain watermark content blocks; encoding the watermark attribute block, and combining the encoded attribute encoding sequence block and the watermark content block to obtain a target watermark data block; and embedding the target watermark data block into the target spectrum according to the coding rate to obtain a target audio. According to the embodiment of the invention, the watermark attribute block is coded, so that the watermark can be identified when the position of the watermark in the audio signal deviates; according to the audio watermark embedding method and device, the target watermark data block is embedded into the target frequency spectrum according to the coding rate, the audio watermark can be repeatedly embedded into the audio, when part of the audio watermark is damaged or lost, complete watermark information can still be extracted from the rest of the audio, and the audio watermark embedding effect is improved.

The invention discloses a positive electrode lithium supplementing agent, a positive electrode plate, a secondary battery and a power utilization device, and belongs to the technical field of batteries, the positive electrode lithium supplementing agent comprises lithium phytate and a lithium supplementing agent, and the lithium supplementing agent comprises at least one of Li5FeO4, Li6CoO4 and Li2NiO2. The lithium phytate and the lithium supplementing agent are combined to serve as the positive electrode lithium supplementing agent, the lithium phytate and the lithium supplementing agent act together, active oxygen and metal ions released by the lithium supplementing agent are adsorbed, side reactions of the electrolyte are reduced, the electrochemical stability of a system is maintained under high voltage, meanwhile, lithium can be completely released under a high-voltage lithium cobalt oxide system, and the service life of the lithium battery is prolonged. The release amount of a lithium source is effectively increased, the lithium consumption of a negative electrode SEI film forming reaction is fully supplemented, the embedding and separating process of lithium ions in a positive electrode material is promoted, the gas expansion of the secondary battery is improved, and the cycle life of the secondary battery is effectively prolonged.

The invention discloses a photovoltaic V-shaped copper-aluminum composite belt and a production process thereof. The production process comprises the following steps: (a) rolling a copper belt; (b) rolling an aluminum belt; (c) carrying out composite molding; (a) rolling a copper strip, namely processing the oxygen-free copper wire to obtain the copper strip, and (b) rolling an aluminum strip, namely processing the aluminum strip to obtain the aluminum strip; (c) composite forming is conducted, specifically, the copper strip obtained by rolling the copper strip in the step (a) and the aluminum strip obtained by rolling the aluminum strip in the step (b) are subjected to cold rolling compounding, and a copper-aluminum composite strip is obtained; and (d) V-shaped surface forming is conducted, specifically, rolling forming is conducted on the aluminum strip surface of the copper-aluminum composite strip, a V-shaped groove is formed, and the V-shaped copper-aluminum composite strip is obtained. Copper and aluminum compounding is achieved, the conductive performance close to that of a copper material is achieved, and a large number of copper resources are saved; the V-shaped copper-aluminum composite belt can reflect sunlight irradiated on the surface, the sunlight can reach the surface of the cell through secondary reflection, the sunlight can be reused, and the utilization rate of the sunlight is improved.

The invention provides a sealing sheet and a display, which are excellent in embedding property and seamless property when an optical semiconductor element is sealed, and are also excellent in embedding property and seamless property even when the sealing sheet is applied to a display in which a micro LED is used as a light source. A sealing sheet (1) for sealing an optical semiconductor element (5), in which a protective film and a resin composition layer (2) are arranged in this order, the resin composition layer (2) contains 5.3-48.2 parts by mass of metal oxide particles (B) per 100 parts by mass of the total of a resin (A), a monomer, and an oligomer, and the number average primary particle diameter of the metal oxide particles (B) is 5-50 nm. The refractive index of the resin composition layer (2) is 1.45 to 1.65.

The utility model belongs to the technical field of geogrids, and particularly relates to a reinforced geogrid which comprises first grid strips and second grid strips. A plurality of first grating strips are arranged in parallel at intervals; a plurality of second grid strips are arranged in parallel at intervals in the length direction of the first grid strips; the first grid strips and the second grid strips are perpendicularly staggered to form a plurality of grid chambers, reinforcing parts are arranged at the intersections of the first grid strips and the second grid strips, the thickness of the reinforcing parts is larger than that of the first grid strips and that of the second grid strips, and ground gripping structures and anti-skid structures are arranged on the upper faces and the lower faces of the reinforcing parts correspondingly. The ground gripping structure is used for increasing the ground gripping force of the bottom of the geogrid, and the anti-skid structure is used for increasing the friction force between the top of the geogrid and soil. The strength of the geogrid can be enhanced through the thickened reinforcing part, the geogrid is resistant to tear and deformation, the ground gripping structure and the anti-skid structure can enhance the connecting force between soil on the surface of the geogrid and the geogrid, and the overall stability of a slope can be improved through the geogrid.

The invention relates to a metal oxide and application thereof. The metal oxide is of a face-centered cubic structure, the space group is Fd-3m, the lattice constant a of the metal oxide is # imgabs 0 # to # imgabs 1 #, and the tensile residual stress F1 in the metal oxide is 0.105 MPa to 5.51 MPa, or the compressive residual stress F2 in the metal oxide is 1.05 MPa to 8.6 MPa; the metal oxide is prepared by a spray pyrolysis method, and the pyrolysis rate K is 0.361 to 48.611. The metal oxide provided by the invention not only has relatively high crystallinity and stability, but also has high activity, and is beneficial to improving the intercalation of sodium ions or lithium ions when the positive electrode material is prepared, so that the comprehensive electrical property is improved.

The invention belongs to the technical field of cultivated land quality evaluation, and discloses a cultivated land quality evaluation method and device, computer equipment and a medium. The method comprises the following steps: acquiring land grid data of a cultivated land to be evaluated, and performing comparative learning on features of the land grid data by a backbone network to obtain context features; converting the land grid data into three-dimensional tensor data; inputting the three-dimensional tensor data into a CNN module, and extracting potential local features in the three-dimensional tensor data to obtain spatial features; combining the spatial features with the context features to obtain comprehensive features, and inputting the comprehensive features into a full connection layer to obtain a spatial prediction value; extracting topological attribute characteristics in the three-dimensional tensor data by using a GNN module to obtain a topological predicted value; and fusing the space prediction value and the topology prediction value to obtain an evaluation result of the quality of the cultivated land to be evaluated. The accuracy of soil quality evaluation can be improved.

The invention relates to a preparation method of a biomass hard carbon negative electrode material and application of the biomass hard carbon negative electrode material in the field of energy storage. The method comprises the following steps: carrying out pretreatment, crushing and pre-carbonization treatment on a biomass raw material to obtain a pre-carbonized material; mixing and stirring the pre-carbonized material and an acid solution, washing and drying to obtain an acid-treated hard carbon material; soaking the obtained acid-treated hard carbon material in an alkaline solution, heating and stirring, washing and drying to obtain an alkali-treated hard carbon material; mixing the obtained alkali-treated hard carbon material with a pore-forming agent, carrying out ball milling, carrying out solid-liquid separation, and carrying out high-temperature carbonization and grinding on the obtained solid phase to obtain a powder sample; and mixing the obtained powder sample with hydrofluoric acid, and carrying out hydrothermal treatment to obtain the biomass hard carbon negative electrode material. The sodium ion battery prepared by taking the biomass hard carbon negative electrode material as a negative electrode material has the characteristics of high initial coulombic efficiency, high low-voltage platform specific capacity and excellent cycle performance and rate capability.

The invention discloses a bamboo hard carbon material, comprising the following components in parts by weight: 65-70 parts of bamboo powder, 6-8 parts of phosphoric acid, 5-7 parts of ethylenediamine, 4-6 parts of N-hydroxysuccinimide, 3-6 parts of 2,5-furan dimethanol, and 80-90 parts of deionized water. The bamboo hard carbon material is prepared by the following method: bamboo is pre-treated and carbonized, ball-milled to obtain 500-mesh bamboo powder, then mixed with phosphoric acid, ethylenediamine, N-hydroxysuccinimide, 2,5-furan dimethanol, deionized, dried, filtered to obtain modified bamboo powder, and then the modified bamboo powder is carbonized at high temperature and plasma treated to obtain the bamboo hard carbon material. The bamboo hard carbon material prepared by the present invention can be used as a negative electrode material of an ion battery, which can effectively improve the specific capacity, initial coulomb efficiency, and rate performance of the ion battery, and enhance its cycle stability, prolong service life, and the production process is simple and easy to promote.

The invention relates to a gas-phase silicon-carbon negative electrode material of a porous carbon base material, which comprises the following steps: preparing porous starch, preparing a silicon / porous carbon composite material, preparing a micron porous Mg2Si negative electrode, preparing a nano porous silicon / carbon composite negative electrode, performing carbon coating by a porous silicon acetylene CVD (Chemical Vapor Deposition) method, and controllably preparing the gas-phase silicon-carbon negative electrode material of the porous carbon base material. The gas phase precipitation method and the alloying method are creatively combined, the prepared negative electrode material has higher specific capacity and energy density, rapid transmission of lithium ions is facilitated, the stability of an electrode structure is kept, and the negative electrode material has the advantages of being good in cycle performance, high in safety, high in energy density and the like.

The invention discloses a battery negative electrode material and a preparation method thereof, and relates to the technical field of batteries. The battery negative electrode material comprises an inner core, a titanium dioxide coating layer coated on the surface of the inner core, a lithium titanate coating layer coated on the surface of the titanium dioxide coating layer, a carbon coating layer coated on the surface of the lithium titanate coating layer and a polymer coating layer coated on the surface of the carbon coating layer, the inner core comprises a silicon-based negative electrode material; the polymer coating layer comprises at least one of polyaniline, polythiophene and polypyrrole. Under the action of the four coating layers, the integrity of the silicon-based negative electrode material can be kept, direct contact between the silicon-based negative electrode material and an electrolyte is avoided, side reactions are reduced, the capacity fading of the battery in the charge-discharge cycle process is reduced, and the rate capability and the cycle stability of the battery are improved.

The invention discloses an expanded microcrystalline graphite / Fe2O3 / SnO2 lithium ion battery micro-nano negative electrode material as well as a preparation method and application thereof, and relates to the technical field of new material preparation and new energy. Comprising the following steps: by taking high-purity microcrystalline graphite as a raw material, preparing expanded microcrystalline graphite by adopting an oxidation method and an inert atmosphere heat treatment method, then preparing an expanded microcrystalline graphite / Fe2O3 composite material by adopting a water bath method and an air atmosphere heat treatment method I, and then preparing the expanded microcrystalline graphite / Fe2O3 / SnO2 composite material by adopting a hydrothermal method and the air atmosphere heat treatment method I for the negative electrode of the lithium ion battery. The ternary composite material has the first specific discharge capacity of 1539.9 mAh / g under the current density of 0.1 A / g, the first coulombic efficiency is 70.1%, and the ternary composite material still has the specific discharge capacity of 1003.2 mAh / g after 100 cycles. The expansion effect of the high-purity microcrystalline graphite is remarkable, the lithium storage capacity and the cycling stability of the lithium ion battery negative electrode material are remarkably improved by selecting and adding the nano metal oxide, and a new thought and a new method are provided for developing the high-performance lithium ion battery negative electrode material.

The invention discloses a steel belt with a high-wear-resistance coating and a machining process of the steel belt, and relates to the technical field of stainless steel belts. According to the scheme, a stainless steel band is used as a base material, the stainless steel band can be a cold-rolled steel band or a hot-rolled steel band, and the specific model can be limited according to actual application requirements; the surface of the stainless steel band is subjected to oil removal and hydrochloric acid activation, then the stainless steel band is sequentially placed in a nickel layer plating solution A and a nickel layer plating solution B, a double-layer plating layer is formed through electroplating, nickel sulfate serves as main salt in the nickel layer plating solution A, and a nickel layer is pre-plated on the surface of the stainless steel band; nickel sulfate and cobaltous sulfate are used as main salts in the nickel layer plating solution B, and a nickel-cobalt plating layer is formed on the surface of the pre-nickel-plated layer, so that a composite plating layer with excellent wear resistance is formed on the surface of the stainless steel band, and the corrosion resistance of the stainless steel band is also improved.

The invention relates to the technical field of aqueous zinc ion battery positive electrode materials, in particular to an ammonium vanadate positive electrode material and a preparation method and application thereof. The invention provides a preparation method of an ammonium vanadate positive electrode material, which comprises the following steps: mixing an ammonium metavanadate solution and gas phase growth carbon fibers, sequentially adding cyclodextrin and anhydrous oxalic acid, and carrying out hydrothermal reaction to obtain the ammonium vanadate positive electrode material. The ammonium vanadate positive electrode material prepared by the method disclosed by the invention has excellent cycling stability and rate capability.

The invention provides a miniature gas detection echo wall mode coupled cavity sensor based on an electromagnetism-like induced transparency effect. The device comprises a coupling cavity and a waveguide, the coupling cavity is two echo wall mode double-ring cavities with different sizes, and the waveguide is used for waveguide transmission with the coupling cavity and microcavity coupling. The echo wall mode coupled cavity sensor has the advantages that the echo wall mode coupled cavity is high in integration level and quality factor and easy to induce an electromagnetically induced transparency effect, and the intensity and the stability of a transparency peak are ensured. The excited electromagnetism-like induced transparency effect can be used for detecting and identifying the types of micro gases.

The utility model discloses a stable embedded sleeve, which belongs to the technical field of railway engineering and comprises a sleeve body component, a stabilizing component and a sealing cover component. The cylinder component is of a columnar structure, a containing space extending in the axis direction of the columnar structure is formed in the top end face of the cylinder component, and the connecting component is detachably connected into the containing space. The stabilizing components are all arranged on the outer wall face of the cylinder component, and a plurality of protruding parts are formed on the outer wall face of the cylinder component. The sealing cover component is arranged at the opening of the containing space and used for opening or blocking the opening of the containing space. The utility model provides a stable pre-embedded sleeve which can adapt to the working environment of a construction site, not only can avoid the influence on road and bridge surface passing during construction, but also can remarkably improve the binding power and pulling resistance between the sleeve and concrete, avoids the separation between the sleeve and a peripheral concrete layer, and improves the construction quality. And the safety and durability of the connecting component are ensured.

The invention discloses a digital watermark camouflage method based on reverse information entropy tracking, which comprises the following steps: dynamically adjusting the embedding strength and the concealment of a digital watermark by monitoring the local entropy fluctuation of a signal in different processing stages, and monitoring the complexity of the signal through the local entropy change in the signal processing process, the method comprises the following steps of: extracting a variable quantity of a digital watermark, adjusting the camouflage degree of the digital watermark according to the variable quantity, adjusting key parameters in a digital watermark extraction and recovery process in real time through an information entropy feedback mechanism, optimizing the recovery precision of the digital watermark, and optimizing a digital watermark embedding process by adopting a reverse information entropy minimization method in a high-noise environment. And the anti-interference capability of the digital watermark under the noise interference condition is improved. According to the method, the digital watermark embedding and recovering strategy is dynamically optimized, so that effective recovery and stable transmission of digital watermark information are ensured under various noise and signal change conditions.

The invention discloses a long-circulation lithium iron phosphate battery and a preparation method thereof, a positive plate, a negative plate, a porous diaphragm and an electrolyte are assembled into the battery in a glove box filled with argon, and the long-circulation lithium iron phosphate battery is prepared. A negative plate is a long-circulation lithium iron phosphate battery prepared by mixing polyvinylidene fluoride, a negative electrode material and acetylene and loading the mixture on a copper foil, the negative electrode material contains silicon dioxide, so that the lithium storage performance of the negative electrode material is improved, and meanwhile, high-temperature carbonization treatment is performed, so that an organic framework forms a grid carbon layer to coat the surface of the silicon dioxide, and the lithium storage performance of the lithium iron phosphate battery is improved. The lithium iron phosphate battery negative electrode material prevents silicon dioxide in the negative electrode material from promoting volume expansion due to charging and discharging, so that the stability of the negative electrode material is ensured, the grid carbon layer increases the conductivity of the negative electrode material, and the negative electrode material is integrally coated with the carbon layer, so that the expansion of the negative electrode material is limited, and the service life of the lithium iron phosphate battery is prolonged.

The invention belongs to the technical field of complex network analysis, and particularly relates to a community discovery method and device based on a binary symbol network and computing equipment. The method specifically comprises the following steps: step S101, establishing node and edge connection relation data of a bipartite symbol network according to evaluation relation data of a user and a commodity; s102, for two nodes with common secondary nodes in the main node set, according to the edge connection relation of the network and the weight of the secondary nodes, the edge connection weight value of the two nodes is calculated, and a main node set network adjacency matrix W is constructed; step S103, according to the adjacency matrix W of the main set node network, calculating to obtain an embedding matrix Y of the nodes and a community membership matrix C; and S104, adjusting the network adjacency matrix W according to the calculated node community membership matrix C, then re-optimizing the node embedding matrix Y and the node community membership matrix C to form iterative optimization, and finally obtaining a node embedding and community division result.

The invention belongs to the technical field of materials, and relates to a preparation method of a fluorinion-induced manganese oxide composite material and application of the fluorinion-induced manganese oxide composite material as a positive electrode material in an aqueous magnesium ion capacitor. The preparation method comprises the following steps: firstly, preparing a MnO2 precursor from a positive electrode through a hydrothermal method, and annealing to obtain a pure-phase MnO2 nanoflower structure; the preparation method comprises the following steps: preparing MnO2 nanoflowers, adding the prepared MnO2 nanoflowers into polyethylene glycol, adding manganese chloride, potassium fluoride and polyvinylpyrrolidone, carrying out ultrasonic dispersion for 30 minutes, continuously stirring for 1 hour, and transferring the obtained mixed solution into a Teflon reaction kettle for hydrothermal reaction to obtain the MnO2 / Mn2O3 / KMnF3 composite material. The composite material is used as a positive electrode and activated carbon is used as a negative electrode to assemble a water-based magnesium ion capacitor device, and the water-based magnesium ion capacitor device can reach relatively high specific capacitance after an electrochemical test. According to the invention, a hydrothermal method is adopted for synthesis, the process is simple, the material cost is low, and the material is non-toxic and harmless, so that the capacitor has high practical application value and is expected to become a novel green energy storage device.

The invention belongs to the field of sodium-ion batteries, and particularly relates to a preparation method of lotus petiole derived hard carbon as a negative electrode of a sodium-ion battery. Firstly, lotus petiole is subjected to pretreatment such as washing and drying to remove surface impurities, then a pretreated material is obtained by adopting a microwave-assisted and chemical treatment method, and finally, the hard carbon material with good stability is obtained by high-temperature carbonization in a nitrogen atmosphere. The half-cell assembled by the biomass derived hard carbon prepared by the invention has excellent electrochemical performance. In the preparation process, raw materials are cheap and easy to obtain, the cost is low, the method is simple and easy to implement, the preparation efficiency is high, and no template or surfactant exists. A half battery assembled by the prepared hard carbon material has relatively high specific capacity, has the reversible capacity of 342.4 mAh g <-1 > under the current density of 20 mA g <-1 >, and still has the capacity retention rate of 90.2% after 2000 cycles under the current density of 1 A g <-1 >. In addition, the natural lotus petiole is used as the raw material, the material is easy to obtain and low in cost, and comprehensive utilization of biomass waste is achieved.

The invention relates to the technical field of philippine violet herb extraction, in particular to a functional philippine violet herb extract and a preparation method thereof.The preparation method specifically comprises the following steps that S1, philippine violet herb is soaked in a treating agent and pretreated at the closed high temperature and high pressure; s2, performing alcohol extraction under the assistance of ultrasonic waves and microwaves to obtain the high-purity herba violae extract. The herba violae extract obtained through the extraction process has anti-inflammatory, anti-fungal and anti-oxidation effects and also has a bacteriostatic effect on oral pathogenic bacteria such as porphyromonas gingivalis, actinomycetes and porphyromonas, and an environment-friendly extraction solvent and optimized extraction conditions including but not limited to temperature, time, pH value and solvent proportion are adopted, so that the extraction efficiency is improved, and the extraction cost is reduced. Effective components in the herba violae in the extraction process are guaranteed to be reserved to the maximum extent, the activity of the effective components is released, and the purity and the stability of the product are further improved through specific post-treatment steps, ultrafiltration and spray drying.

The invention discloses a universal method for preparing a hard carbon material, which comprises the following steps: treating a biomass raw material, and putting the biomass raw material into a strong base KOH solution for soaking treatment to destroy organic matter molecules in the biomass raw material to obtain the biomass raw material; putting the treated biomass raw material into a tubular furnace in a nitrogen atmosphere, raising the temperature from room temperature to 200 DEG C, then carrying out preheating treatment for 2 hours in an inert atmosphere of 200 DEG C, dehydrating and softening the material; and along with the completion of preheating dehydration, heating the tubular furnace to 1200 DEG C, preserving heat for 2 hours, and naturally cooling after the completion of heat preservation, thereby obtaining the hard carbon material. According to the invention, the hard carbon material with a long-range disordered and short-range ordered hard carbon material characteristic structure can be prepared, the interlayer spacing of the hard carbon material is greater than 0.37 nm, the hard carbon material is more suitable for being used as a negative electrode material of a sodium ion battery or a lithium ion battery, and the applicable biomass raw materials are diversified, high in universality and higher in universality.

The application discloses a kind of unmanned plane flight plan pre-dispatching tool and method, wherein the tool includes: information input module, target constraint generation module, dispatching model establishment module, dispatching scheme generation module and dispatching scheme release module;The unmanned plane flight plan pre-dispatching method is realized using the above tool, including the following steps: step 1, receiving various information;Step 2, generating the target constraint of unmanned plane flight plan pre-dispatching;Step 3, establishing the target planning model of unmanned plane flight plan pre-dispatching;Step 4, solving the generation of unmanned plane flight plan pre-dispatching scheme;Step 5, release scheme, complete the unmanned plane flight plan pre-dispatching.The application provides implementation tool and technical basis for low-altitude flight service, urban air traffic management, unmanned plane command control.

The present invention provides a processing device for installing a sleeve on a throttle body and a method for using the same, wherein the processing device for installing a sleeve on a throttle body comprises an air inlet for installing a throttle plate, the air inlet is provided with a sleeve mounting hole, and the processing device comprises a control mechanism, a pressing mechanism, a positioning mechanism for fixing the throttle body, and a pressing head for pressing the sleeve into the sleeve mounting hole of the throttle body. The present invention solves the following problems in the prior art: one is how to monitor the press-fitting quality of the sleeve and judge whether the press-fitting quality of the sleeve is qualified during the installation of the sleeve; the second is how to ensure that the positions of the two are not easily aligned during the process of pressing the sleeve into the sleeve mounting hole; the third is how to avoid deformation of the air inlet of the throttle body due to force during the process of pressing the sleeve into the sleeve mounting hole; and the fourth is how to ensure that the sleeve and the sleeve mounting hole are coaxial during the installation of the sleeve.