44results about How to "Stable characteristics" patented technology

The invention discloses an optimized molecular dynamics simulation method for a monocrystalline silicon cutting process. Comprising the following steps: initializing and setting parameters, creating a workpiece area, creating an abrasive particle area, creating an atomic box, setting atomic mass, fixing a boundary layer, selecting a potential function, carrying out energy minimization processing and relaxation processing, setting cutting parameters, and carrying out operation simulation and result visualization processing. According to the method, interaction between silicon atoms and interaction between silicon and carbon can be described more accurately by using Tersoft potential; the simulation stability is improved by setting time step length, temperature control and energy minimization; by defining different temperature control layers such as a constant temperature layer and a Newton layer, complex dynamic behaviors in the material cutting process can be better simulated; by optimizing a calculation model and an algorithm, the speed and the precision of atomic motion trail and stress distribution in the process of simulating the cutting of the monocrystalline silicon are remarkably improved, and the stability of the simulation process is ensured.

The invention discloses an optimized scheduling method and system for post-disaster recovery of a power distribution network, particularly relates to the technical field of power grid regulation and control, and is used for solving the problem that potential grid-connected potential safety hazards cannot be found in advance before grid connection in the prior art. Acquiring real-time electrical parameter data of the island area and the main power grid, and calculating a phase difference and a frequency deviation between the island area and the main power grid based on a phasor measurement algorithm; according to the detected deviation, the output power and the load state of the distributed power supply in the island area are adjusted in real time, so that the electrical parameters of the island area tend to be consistent with the main power grid step by step; analyzing the energy conversion process of the island area and the main power grid, and evaluating the stability margin before grid connection; extracting complex features of the electrical signals by using a multi-scale signal processing technology, and evaluating the complexity of phase signals of the island region and the main power grid in combination with fractal dimension analysis; and on the basis of the stability margin and the signal complexity, the potential hidden danger degree of grid connection is judged, and when the safety condition is met, grid connection operation is allowed to be executed.

The invention relates to the technical field of thickening agents, and discloses a preparation process of a high-performance fracturing fluid emulsion type thickening agent. The preparation method comprises the following steps: S1, uniformly mixing 30-50% of oil phase and 50-70% of emulsifier; s2, preparing a water phase: dissolving a monomer and a cross-linking agent in water, and adjusting the pH to prepare the water phase; s3, emulsifying: dropwise adding the water phase into the oil phase, and performing high-speed shearing to form an inverse emulsion; and S4, polymerization reaction: adding an initiator under the protection of nitrogen, and carrying out polymerization reaction at 50-70 DEG C. By introducing the dynamic cross-linking agent, a reversible cross-linked network is formed in the molecular structure of the thickening agent. When the molecular chain of the thickening agent is broken under the action of high shearing force, the dynamic cross-linked structure can quickly reconstruct a molecular network, and the viscosity recovery rate of the thickening agent after shearing is ensured. And compared with the problem of low recovery rate caused by incapability of repairing broken molecules in the prior art, the adaptive capacity of the thickening agent in a high-shear environment is remarkably improved.

The invention provides a nonlinear simulation method and system for a high-resolution multispectral remote sensing image. On the basis of the scale invariance principle of images, the non-linear simulation method for the remote sensing images is deduced and obtained by utilizing the space detail difference and the spectrum detail difference of the images with different space scales. The method is not limited by the number of wavebands and can predict a remote sensing image simulation result. On the basis of a moderate balance target of a multispectral correlation coefficient and a panchromatic correlation coefficient, an optimal feature extraction coefficient kI is provided, a feature fusion coefficient is designed as a reciprocal of the feature extraction coefficient, namely # imgabs0 #, and meanwhile, two image simulation modes of injecting panchromatic bands into multispectral bands and injecting multispectral bands into panchromatic bands are provided; and high-fidelity simulation of remote sensing image spectrum and spatial information can be realized.

The invention discloses a cavity antenna of a notebook computer shell. The cavity antenna comprises a metal shell cover with a rectangular opening area. The cuboid cavity is installed on the machine shell cover and embedded in the rectangular opening area. The cavity is provided with four metal side faces, a metal bottom face and an opening face, the opening face is opposite to the metal bottom face, and the opening face and the rectangular opening area are located on the same plane. The double-sided printed circuit board is provided with a feed-in surface and a coupling surface, the feed-in surface coincides with the opening surface and is superposed on the cavity, and the periphery of the feed-in surface is welded on the side surface of the cavity. The coaxial line penetrates through one metal side face, the center conductor is connected with an excitation circuit of the feed-in face, and the outer layer conductor is connected with a grounding circuit of the feed-in face and conducts the four metal side faces. The excitation circuit is coupled with the slot line block, the first high-frequency block and the second high-frequency block of the coupling surface, the slot line block is connected with one of the four metal side surfaces, and the first high-frequency block and the second high-frequency block are in floating connection. The shielding effect can be reduced.

The invention relates to the technical field of bacterial cellulose preparation, in particular to a composite flora for producing bacterial cellulose and a preparation method thereof, and the preparation method comprises the following steps: screening gluconobacter oxydans, obtaining culture medium preparation materials and preparation tools, preparing a slant culture medium set, preparing an enriched liquid culture medium set, and preparing composite flora mixed inoculation liquid. The method comprises the following steps: preparing a waste tobacco leaf leaching solution, extracting a proportional leaching solution from the waste tobacco leaf leaching solution according to a preset proportion, obtaining a mixed fermentation culture medium based on a preparation tool and the proportional leaching solution, and carrying out inoculation operation on a composite flora mixed inoculation solution by using the mixed fermentation culture medium to obtain a dry cellulose membrane; calculating the yield of the bacterial cellulose based on the dry cellulose membrane, and completing the preparation of the composite flora for producing the bacterial cellulose based on the yield of the bacterial cellulose. The method can be used for scientifically, efficiently and stably preparing the composite flora.

This invention relates to a method for extracting natural gas hydrates and the perfluorocarbon extractant used therein. The perfluorocarbon extractant comprises a viscosity modifier, an interface modifier, and a solvent; the viscosity modifier includes perfluorotributylamine; and the interface modifier includes perfluoropolyether and / or perfluorobutyric acid. The perfluorocarbon extractant of this invention exhibits high solubility for methane, strong hydrophobic properties, and stable physicochemical properties. During natural gas hydrate extraction, it allows methane released after hydrate decomposition to preferentially enter the extractant phase in a dissolved state and migrate within the reservoir, thereby achieving single-phase liquid extraction of methane. This technical approach can weaken or even eliminate the Jamin effect and seepage blockage caused by gas-liquid two-phase mixing, reduce reservoir flow resistance, and improve the extraction efficiency and continuous gas production capacity of natural gas hydrates in silty clay reservoirs.

The invention relates to a preparation method of a bacterial standard substance capable of being stored for a long time and stable in content, which sequentially comprises the following steps: step 1, preparing a protective solution, adding a bacterial solution, and uniformly mixing; step 2, loading the mixture uniformly mixed in the step 1 into a tray, and performing pre-freezing treatment; step 3, carrying out freeze-drying treatment on the bacteria liquid sample pre-frozen in the step 2; and 4, quantitatively sub-packaging the freeze-dried bacterial liquid sample in the step 3, and carrying out vacuum refrigeration. According to the present invention, the number and the characteristics of the microorganisms of the freeze-dried coliform bacterial powder can be maintained stable for a long time through the compounded protective agent formula and the combination of the specific storage conditions so as to prepare the coliform bacterial standard product for quantitative detection.

This invention provides a method for detecting rotating debris in coal flow based on physical fuzzy modeling and scene-customized attention. The method includes: acquiring a clear coal flow image and then labeling non-coal debris targets in the image; establishing a dataset; constructing a debris detection network; constructing a physics-driven motion fuzzy mapping model; using the motion fuzzy mapping model to dynamically blur the clear coal flow image, generating training samples simulating motion fuzziness phenomena in a conveyor belt; training and optimizing the debris detection network; inputting a real-time coal flow image into the optimized network to obtain candidate detection results for non-coal debris targets; post-processing the candidate detection results and outputting the final filtered detection results. This invention can improve the stability and accuracy of debris detection under complex conditions of high-speed coal flow, reduce the influence of motion fuzziness and background interference, and provide technical support for the safety monitoring and automatic sorting of coal mine conveying systems.

The invention provides a treatment method and a treatment system for high-salinity wastewater, and aims to solve the problems of high treatment difficulty and high operation cost in the existing high-salinity wastewater treatment process. The treatment method comprises the following steps: 1) extracting hazardous waste samples containing high-salinity wastewater in batches, and carrying out a curing test and a leaching test in a laboratory; (2) according to a test result, the adding proportion of all components of the hazardous waste is determined, and the components are input into a blender to be subjected to curing treatment; 3) fully stirring and mixing the hazardous wastes by a mixer; 4) conveying the mixture to a curing area for curing; (5) detecting the leaching result of the solidified body after curing, transferring the qualified solidified body to a rigid landfill area for landfill, crushing the unqualified solidified body by a crusher, and continuously conveying the crushed solidified body to a blender for solidification treatment; the treatment system comprises a high-salinity wastewater metering device, a solid salt metering device, a fly ash metering device, a blender, a maintenance station and a rigid landfill. The invention solves the problems of high treatment difficulty and high operation cost of high-salinity wastewater, and achieves the purpose of treating waste with waste.

The present invention relates to a method for constructing a dry eye cell model based on mitochondrial dysfunction, which is characterized in that the human corneal epithelial cells cultured in vitro are treated by a method of targeted knockout or knockdown of the expression level of TFAM in human corneal epithelial cells, and then a dry eye cell model induced by mitochondrial dysfunction is constructed in a directional manner. The present invention uses targeted knockout / knockdown of the expression of TFAM in human corneal epithelial cells to establish a dry eye cell model that can better and more realistically reflect mitochondrial dysfunction-induced dry eye cell model, which has the characteristics of high model construction success rate, stable model characteristics, and no generation of non-target cell models, and is conducive to the study of the mechanism of downstream mitochondrial dysfunction in the occurrence and development of dry eye or horizontal comparison between treatment schemes.

The invention discloses a preparation method of a super-hydrophobic microporous separation membrane, which comprises the following steps: introducing nanoparticles into a membrane casting solution system to form a multielement membrane casting solution system consisting of polymer / solvent / additive / nanoparticles, and preparing the separation membrane through a non-solvent induced phase separation process. The nanoparticles are particles subjected to hydrophobic modification by using perfluoro and polyfluoroalkyl compounds, and have through pore structures and rich hydroxyl groups on the surfaces. A hydrophobic fluorine-containing long chain modified on the surface of a hydrophobic / hydrophilic pore channel particle obviously enhances the compatibility and dispersity of the hydrophobic / hydrophilic pore channel particle in a PVDF casting membrane solution, and richer hydrophilic hydroxyl groups on the surface of the uniformly distributed particle promote the exchange of a water phase and a polymer-rich phase during phase separation; the through pore channel structure can also be used as a mass transfer channel of water coagulating bath during phase inversion and water vapor during membrane distillation, through the interaction, the membrane pore diameter is increased, the porosity is improved, meanwhile, polymer crystallization is induced to form a rough spherical particle structure, and a super-hydrophobic surface is constructed.

An antenna according to an embodiment of the present invention includes a primary radiator and a reflector mirror. The primary radiator radiates radio waves. The reflector mirror reflects radio waves radiated from the primary radiator, has same aperture diameter and height as a parabolic reflector mirror whose aperture diameter is equal to or less than 1.7 times a wavelength of the radio waves, and has a non-parabolic surface as a mirror surface shape.

A capacitor element has a water-soluble first polymer disposed on the surfaces of anode and cathode members and a water-dispersible second polymer disposed on the surfaces of the anode and cathode members on which the first polymer is disposed. The second polymer electrically connects together the anode and cathode members. Between the surfaces of the anode and cathode members and between the inner face of a case and the outer face of the capacitor element, a solid-at-normal-temperature substance is disposed that has an electrolyte dissolved in a solvent that is solid at or below a first temperature and that melts when heated to or above a second temperature higher than the first temperature.

The invention provides a glass cleaning agent and a preparation method and application thereof, and relates to the technical field of cleaning agents, the glass cleaning agent comprises the following components by mass: 5-15% of a surfactant, 5-15% of a corrosion inhibitor, 5-10% of a chelating agent, 2-8% of an organic solvent, and the balance of water; wherein the surface active agent is an anionic surface active agent; and the corrosion inhibitor is an alkyl-substituted biphenyl corrosion inhibitor. The glass cleaning agent provided by the invention provides a brand-new and efficient cleaning solution for the semiconductor industry due to the excellent cleaning effect, no corrosion to semiconductor precise sensitive devices and excellent semiconductor material protection performance.

The invention belongs to the technical field of high-power microwaves, and particularly relates to an ultra-high-power ultra-large-radius coaxial backward wave tube which is particularly suitable for national defense and military application. According to the ultra-large-radius coaxial corrugated backward wave tube, on the basis that the difference between the inner radius and the outer radius of a fundamental wave (TEM wave) is not changed, by increasing the center radius of a slow wave device and keeping the electron beam voltage and current density unchanged, the input current is increased in an equal proportion mode, and the output power is increased in a year-on-year mode. The problem that the power of an existing slow-wave device is limited can be solved.

This invention discloses a method and system for risk assessment and graded early warning of offshore wind farm vessels. The method involves collecting and fusing multi-source sensing data; performing spatiotemporal alignment and fusion processing on the fused multi-source sensing data to generate a bird's-eye view feature representation containing spatiotemporal characteristic information of the vessel; based on the bird's-eye view feature representation, employing a fusion prediction model combining a vessel motion physics model and a time series prediction algorithm, calculating the motion reachability set of the target vessel within the predicted time period; conducting a risk assessment based on the spatial relationship between the motion reachability set and a preset safe area of ​​the wind farm, and triggering graded early warnings based on the assessment results. This invention solves the problems of blind spots in single-source monitoring and high false alarm rates in traditional early warning systems, achieving accurate and dynamic assessment and proactive early warning of vessel collision risks in offshore wind farm waters, significantly improving regulatory safety and efficiency.

The present invention discloses a remote sensing image space-spectrum fusion method based on principal component analysis, wherein the mean filter images of the panchromatic band and the multispectral band are selected to form a vector sequence, the eigenvalues ​​and eigenvectors are calculated, the vector sequence is subjected to PCA transformation, a component with the largest correlation coefficient with the mean filter image of the panchromatic band is obtained as the first principal component component, the first principal component component is subjected to PCA inverse transformation, and the multispectral data replaces the transformed first principal component component, and at the same time, it is assumed that the feature extraction operator is not related to the multispectral, and the extreme value of the multispectral feature coefficient is solved, thereby obtaining the space-spectrum fusion expression of the mean filter image at high resolution. The present invention also discloses a space-spectrum fusion system, which organically integrates the spectral information of the multispectral band with the spatial information of the panchromatic band, so that the spectral information of the ground objects in the image is improved, and the geometric texture and spatial details of the panchromatic image are highly retained, effectively improving the visual resolution and computer analysis ability of the panchromatic image.

The utility model discloses a novel four-output phase-locked loop satellite frequency demultiplier, the frequency demultiplier is formed by assembling a housing and a frequency demultiplier circuit, the frequency demultiplier circuit is locked in the housing, and the housing comprises a feed source, a waveguide tube and an output terminal. The frequency reduction circuit comprises a two-stage horizontal signal common end amplification module, a two-stage vertical signal common end amplification module, a field effect transistor bias control module, four CMOS satellite tuners, four crystal oscillators and a DCamp. And a DC power supply module. The beneficial effects of the technical scheme are that after amplification, frequency mixing and tuning are carried out through the frequency reduction circuit in the housing, four paths of intermediate frequency signals VL, VH, HL and HH are respectively output through the four output terminals. The four paths of intermediate frequency signals are connected to the converter system through coaxial cables, and can be connected with a plurality of satellite receivers through the converter system to realize simultaneous use of a plurality of clients.

The utility model provides a discharging device for adjusting the quality of textured soybean protein and expanding the productivity, which relates to a discharging device and comprises a shunting device, a transition connecting component, an extrusion cavity tube, a connecting rib plate, a mounting base and a forming die. At least two groups of same extrusion cavity pipes are arranged, one end of each extrusion cavity pipe is connected with the flow dividing device through the transition connecting assembly, the other end of each extrusion cavity pipe is connected with the forming die, and each extrusion cavity pipe comprises at least two sections of cavity pipe units which are modularly combined and connected; the inner diameter of a fluid channel of the combined extrusion cavity pipe is gradually reduced from one end of the transition connecting assembly to one end of the forming die, and the extrusion cavity pipe is of a novel structure developed on the basis of existing equipment, so that the extrusion cavity pipe is applicable to existing extrusion extruder equipment, the stability of the output quality of products is improved, and meanwhile, the output capacity can be improved.

The invention discloses an imine bond connected two-dimensional covalent organic framework material, the structural formula of the covalent organic framework material is # imgabs0 #, and an electrode material prepared from the covalent organic framework material has ultra-long cycle stability and is suitable for a lithium ion battery.

The present invention discloses an optimization scheduling method and system for post-disaster recovery of a distribution network, which specifically relates to the technical field of power grid control, and is used to solve the existing problem that potential safety hazards of grid connection cannot be discovered in advance before grid connection; real-time electrical parameter data of an isolated island area and a main power grid are obtained, and the phase difference and frequency deviation between the two are calculated based on a phasor measurement algorithm; the output power and load state of distributed power sources in the isolated island area are adjusted in real time according to the detected deviation, so that the electrical parameters of the isolated island area gradually converge with those of the main power grid; the energy conversion process between the isolated island area and the main power grid is analyzed, and the stability margin before grid connection is evaluated; the complex characteristics of electrical signals are extracted using multi-scale signal processing technology, and the complexity of phase signals of the isolated island area and the main power grid is evaluated in combination with fractal dimension analysis; based on the stability margin and signal complexity, the degree of potential hidden dangers of grid connection is judged, and when safety conditions are met, grid connection operation is allowed to be executed.

The invention relates to the technical field of pet food processing, and particularly provides a protein-lipid compound oil gel coating composition which comprises the following components in parts by weight: 60-70 parts of egg yolk oil; 10 to 20 parts of eggshell membrane peptide; 5-10 parts of medium-chain fatty acid; 0.1 to 0.5 part of vitamin E; 10 to 15 parts of ethyl cellulose; and 2-5 parts of nano silicon dioxide. Egg oil is used as a substrate, an oil gel three-dimensional network is constructed, eggshell membrane protein is integrated into lipid, and precise function delivery of joint and fur health is achieved. The solid coating is stable in structure and high in oxidation resistance, can be firmly attached to the surface of the pet food, effectively prevents grease oxidation and leakage, and remarkably prolongs the shelf life and improves the additional value of the product.

This invention relates to the fields of audio signal processing and machine learning, and particularly to an audio anomaly detection method based on physical perception iterative coding. The method includes a feature extraction and fusion module, a physical perception iterative decoupling network module, and an anomaly scoring module. Based on a physical perception iterative coding mechanism, this invention simulates the human auditory system's perception of sound, decoupling audio features into physical components such as timbre and energy. Through multiple iterations, feature representations are progressively refined, thereby achieving more accurate detection of audio anomalies, especially maintaining stable detection performance in domain-transfer scenarios. Furthermore, this method does not rely on anomalous samples; training can be completed using only normal samples, making it more suitable for practical industrial applications.

The invention discloses a lithium-loving porous interface functional layer as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a binder in a non-polar solvent to form a solution A; adding a lithium-loving porous framework material and an electronic conductor into the solution A through a water bath synthesis method, and stirring and reacting to form a solution B; adding a small amount of ionic conductor into the solution B for multiple times to form a solution C; and coating a current collector with the solution C, and drying to form the lithium-loving porous interface functional layer on the current collector. The invention also discloses a lithium-loving porous interface functional layer prepared by the preparation method, and a lithium negative electrode containing the functional layer. The lithium-loving porous interface functional layer comprises the lithium-loving framework, the hole wall of the lithium-loving framework comprises the electronic conductor, and the hole internally comprises the ionic conductor, so that the infinite volume expansion of lithium can be limited, the lithium ion flow is homogenized, the effective current density on the surface is reduced, and the growth of lithium dendrites is inhibited; and the high-capacity and long-cycle performance of the all-solid-state lithium metal battery is realized.

The utility model provides a belt buckle for pushing and abutting against a plaque, which is structurally characterized in that a limiting groove for accommodating a plaque control piece is arranged in the center of a main limiting frame, a first bridge for a belt to penetrate through is arranged on one side of the main limiting frame, a connecting part for connecting a connecting seat is arranged on the other side of the main limiting frame, the plaque control piece is provided with a main shaft rod and extends to form a convex stopper, and the main shaft rod is connected with the main shaft rod. The bottom of the protruding stopper is provided with an elastic piece used for providing resistance, one side of the connecting base is provided with a pivot joint part used for being connected with the main shaft rod, the other side of the connecting base is provided with a positioning groove, a connecting groove used for being connected with the connecting part is formed in the upper portion of the connecting base, and the main limiting frame can be completely fixed to the connecting base by embedding a positioning piece into the positioning groove in a matched mode. Therefore, a person wearing the belt can control the plaque control piece to be linked with the convex stopper in a transverse pushing manner, and the tightness adjustment of the belt between the first bridge and the second bridge is easier and more stable. According to the utility model, the assembly is simpler, and the adjustment of the belt is more convenient only through a transverse pushing means.

The present application belongs to the field of structural optimization design and vibration control technology, and relates to a bistable quasi-zero stiffness structure reverse topology optimization method based on a double-layer hybrid intelligent algorithm. The method defines material distribution variables within a preset design domain, approximates the optimization target in the form of a target potential energy function, and constructs a multi-objective topology optimization model containing a potential energy deviation term, a volume fraction constraint term and a density gradient penalty term. The outer particle swarm algorithm is used for global search, and the inner gradient descent algorithm is used for local fine convergence, thereby realizing the cooperation of global and local optimization. The method can automatically generate a topology configuration with bistable and quasi-zero stiffness characteristics without explicit geometric assumptions, realize the customized design of structural mechanical properties, and has wide application value for low-frequency vibration isolation, energy absorption and multi-stable mechanism design.

Embodiments of the present application generally relate to semiconductor devices. According to embodiments, a semiconductor device includes a first electrode, a second electrode, and a semiconductor component disposed between the first electrode and the second electrode. The semiconductor component includes a diode region including a first region and a second region, and a transistor region. The first region and the second region extend along a first direction. A first location in a second direction of the first region is different from a second location in the second direction of the second region. The second direction intersects the first direction. The semiconductor component is between the first electrode and the second electrode in a third direction intersecting a plane including the first direction and the second direction. At least a portion of the transistor region is around the diode region in the plane.

The invention relates to the technical field of plant extracts, and particularly discloses a composite composition containing polypeptide and a plant extract and a preparation method of the composite composition. The preparation method of the composite composition containing the polypeptide and the plant extract comprises the following steps: 1) uniformly mixing the plant extract, pyrroloquinoline quinone, fructo-oligosaccharide, fermented mulberry juice, fermented rhizoma polygonati powder, vitamin B6, vitamin B12, citric acid, pectin and a first stable phase to prepare a prepad solution A; 2) uniformly mixing oyster peptide, sea cucumber peptide, earthworm protein peptide and a second stable phase to prepare prepad fluid B; and (3) adding the prepad fluid A and the prepad fluid B into water by adopting a micro-fluidic process, continuously mixing for a period of time after all the materials are added, putting into a cold trap, rapidly cooling to room temperature, and standing to obtain the composite composition containing the polypeptide and the plant extract. The prepared composite composition containing the polypeptide and the plant extract has the advantage of being good in stability.

The invention relates to the technical field of cosmetics and functional biological materials, in particular to a fish collagen peptide with moisturizing and anti-aging functions and a preparation method thereof, and the fish collagen peptide comprises modified fish collagen peptide, 2-hydroxyethyl formate, glycerol, butanediol, potassium sorbate and triethanolamine. According to the modified fish collagen peptide, fish collagen peptide, gallic acid and acetaldehyde are subjected to polyphenol-aldehyde condensation to form a stable outer shell layer, so that the oxidation resistance and the structural stability are remarkably enhanced; after being cooperated with small-molecule 2-hydroxyethyl formate which is not used in the field, a compact hydrated network can be constructed, the moisture retention rate and the free radical scavenging rate are improved, and low viscosity fluctuation and no layering are kept under the acceleration condition. The preparation method is mild in preparation process and suitable for moisturizing and repairing cosmetics.