45results about How to "Low technical cost" patented technology

The invention belongs to but not limited to the technical field of text extraction, and particularly relates to an automatic construction method and system for a process industry text knowledge extraction dataset. Firstly, based on a word segmentation tool and a TF-IDF algorithm, an unlabeled text in the process industry field is converted into a large language model fine tuning dataset, and a large language model is subjected to fine tuning; the system has specific knowledge of the field; then, generating an initial knowledge extraction sample set with confidence through multi-stage exploration-utilization ratio adjustment based on the fine-tuned large language model; and finally, through a confidence-based large-scale sample set error detection and correction method, obtaining a sample data set which is finally used for domain knowledge extraction model training. Through the low-cost and high-efficiency industrial text knowledge extraction sample set construction and application method, the input-output ratio of resources is increased to the maximum extent, and the construction and application efficiency of an industrial safety knowledge extraction algorithm is improved.

The invention discloses an SF6 electrification tendency determination method based on humidity variation. The SF6 electrification tendency determination method comprises the following steps: detecting a humidity value D1 of SF6 gas in a gas chamber; and mixing the SF6 gas with the SF6 standard gas with the humidity value of D'according to a set proportion. And detecting the humidity value D2 of the mixed gas obtained by mixing. And according to D1 and D ', calculating a humidity value D3 of the mixed gas under the condition of no electrification tendency. And according to the D2 and the D3, judging whether the SF6 gas has an electrification tendency or not. According to the method, based on the principle that SF6 <-> and H2O are combined after partial discharge, the SF6 gas humidity in the gas chamber is detected, and the variation of the actually measured humidity value and the theoretical value after the SF6 insulating gas and the SF6 gas with the certain humidity are mixed according to the fixed proportion is analyzed, so that the electrification tendency of the SF6 gas is obtained, and technical support is provided for distinguishing the partial discharge degree based on the SF6 gas humidity.

The invention provides a building group seismic loss probability assessment method based on seismic oscillation intensity random field simulation, and belongs to the technical field of seismic loss assessment. The method provided by the invention comprises the following steps: firstly simulating seismic oscillation of a region by adopting a seismic oscillation intensity random field simulation technology to obtain seismic oscillation intensity spatial distribution of different sites, and then estimating loss probability distribution of each building by utilizing a building anti-seismic performance model and a building vulnerability database. According to the method, the occurrence probability of extreme earthquake loss of a large-scale building group can be evaluated more quickly and accurately, and important support is provided for earthquake risk evaluation and post-disaster emergency decision, so that the disaster resistance and recovery capability of a city are enhanced, and the overall toughness of the city is improved.

The invention discloses a medical image classification method and system based on comparative learning, and a storage medium, and relates to the technical field of long-tail medical image classification. A long-tail medical image data set is divided into a training set and a test set, and weak data enhancement and strong data enhancement are respectively performed on images of the training set in a batch processing form according to a preset scheme; performing a comparative learning task on the obtained weak data enhanced image and the strong data enhanced image through a deep convolutional neural network, learning network parameters, and obtaining the deep convolutional neural network after parameter optimization; the long-tail medical images in the test set are classified; through the prototype enhancement contrast learning strategy, the learnable prototype is generated for data enhancement, the balance implicit enhancement contrast learning loss is obtained, and the method has the advantages of high precision, high efficiency, low cost, wide applicability and the like.

The invention provides a nanoelectrode preparation method of a two-dimensional material memristor, and relates to the technical field of semiconductor device preparation, and the method comprises the steps: carrying out the spin coating of a PMMA diluent on a substrate, carrying out the electron beam exposure, carrying out the low-temperature development, and forming a patterned bottom contact electrode; performing physical vapor deposition, photoresist removal and stripping on the patterned bottom contact electrode to obtain a bottom contact electrode; preparing an insulating layer on the substrate for preparing the bottom contact electrode by using an atomic layer deposition mode; copper substrate etching is carried out on the two-dimensional material with the copper substrate, and the two-dimensional material with the copper substrate is transferred to the position above the insulating layer; performing patterning treatment on the transferred two-dimensional material to obtain a patterned two-dimensional material electrode; pMMA diluent is spin-coated on the surface of the substrate after patterning of the two-dimensional material, electron beam exposure and low-temperature development are carried out after baking and glue solidification, and a patterned top contact electrode is formed; and performing physical vapor deposition on the patterned top contact electrode to obtain the top contact electrode. The size of the device can be greatly reduced, and the performance uniformity of the device is improved.

The invention relates to the technical field of semiconductors, in particular to a multiplexing-based optical computing chip and a design method thereof.The multiplexing-based optical computing chip comprises a computing area formed by crossing a first waveguide and a second waveguide, and the computing area comprises a branch waveguide connected with the first waveguide and the second waveguide, a beam splitting part, an intensity modulation part and a first signal conversion part are sequentially arranged on the branch waveguide, the beam splitting part is used for splitting optical signals in a specific proportion, the intensity modulation part is used for modulating the signal intensity of the optical signals into a specific value, and the first signal conversion part is used for setting or maintaining the optical signals in a specific mode; the specific mode means that the optical signal has a specific polarization direction and / or a specific order; the second waveguide is provided with a calculation unit for calculating the sum of the optical powers of the plurality of optical signals. According to the multiplexing scheme provided by the invention, the data processing amount of the optical computing chip can be improved.

The invention discloses a log storage and transmission processing method and system, electronic equipment and a medium, and the method comprises the steps: obtaining an access parameter and a link log requested by a user at a client, and obtaining to-be-stored log information; performing serialization and first compression processing on the to-be-stored log information to obtain first log information; sending the first log information to a service cluster through a user datagram protocol or a hypertext transfer protocol according to the message size of the first log information and the number of servers in the service cluster; in the service cluster, writing the first log information into a double-buffer queue, and transmitting the first log information to a storage cluster in a multi-thread aggregation mode; and in the storage cluster, performing second compression processing on the first log information, and storing the first log information in a database of the storage cluster. The log storage and transmission efficiency and the application performance are improved, read-write operation does not need to be conducted on a disk in the log transmission process, resources of a server are saved, the technical cost is reduced, and the method can be widely applied to the technical field of computers.

The invention discloses a batch automatic binding system and method. The system comprises an initial configuration module, a shooting module, a picture uploading module, a character recognition module, a judgment module, a processor, a refreshing module, a storage module and a binding module. The shooting module is connected with the picture uploading module, and the initial configuration module, the character recognition module, the judgment module, the refreshing module, the storage module and the binding module are all connected with the processor; the initial configuration module is used for acquiring functional attributes of each switch; the shooting module is used for shooting pictures of each switch; the picture uploading module is used for uploading the shot picture to the character recognition module; and the character recognition module is used for recognizing characters on the picture. According to the invention, when the intelligent system is debugged on site, the debugging work of the wall surface intelligent switch does not need to be carried out for a long time, the debugging time can be shortened to be at least 2 minutes, and the labor cost is reduced.

The invention provides a rock stratum identification system and method. The system comprises a drilling machine and electronic equipment, the drilling machine comprises a geological drill rod and a geological drill bit, the geological drill bit and the geological drill rod are internally provided with at least two types of sensing assemblies, and the at least two types of sensing assemblies are connected with the electronic equipment; the at least two types of sensing assemblies are used for collecting detection values in the drilling machine detection process; and the electronic equipment is used for receiving the detection values sent by the at least two sensing assemblies, judging whether the current drilling position of the drilling machine reaches the rock stratum interface or not according to the detection values of the at least two sensing assemblies, and determining the thickness of the rock stratum according to the drilling data of the drilling machine when judging that the current drilling position reaches the rock stratum interface position. Whether the drilling machine reaches the rock stratum interface or not is determined through the detection value sensed by the built-in sensing assembly, the thickness of the rock stratum is determined based on drilling data between the interfaces and in combination with data of the sensing assembly, and the rock stratum interface detection efficiency and accuracy are improved.

The invention discloses an emergency plugging device and method for preventing flowing soil from diffusing. The device comprises an underground plugging assembly and an overground control assembly. The underground plugging assembly comprises a plugging framework and an air bag body, the plugging framework comprises an upper cover plate, metal supporting rods, a lower cover plate and a metal conical head, hose through holes are formed in the upper cover plate, the lower cover plate is fixedly connected with the metal conical head, the metal supporting rods are distributed at intervals in the circumferential direction, and the upper ends of the metal supporting rods are fixedly connected with the upper cover plate. The lower end is inserted into the lower cover plate; the air bag body is located in a space defined by the multiple metal supporting rods. The overground control assembly comprises a hose, one end of the hose is connected with the air bag body, the other end of the hose is connected with the high-pressure pump, an inflation valve and an air pressure controller are further arranged on the hose, and the control system is connected with the air pressure controller and the high-pressure pump. The emergency plugging method adopting the device can effectively slow down the damage speed of the flow soil and control the damage range of the flow soil.

The present invention discloses a method and device for automatically counting algae, which obtains multiple sub-videos, wherein the sub-videos are obtained by photographing the algae in the water sample flowing through the microfluidic chip through a microscope and a camera; the algae concentration displayed in each sub-video is calculated, and the real concentration of the algae in the water sample is calculated based on the algae concentration displayed in each sub-video. The present invention does not need to observe all algae samples, but only needs to observe samples of some algae, and the concentration of algae in surface water can be calculated according to statistical laws, which overcomes the disadvantage that a zoom camera cannot be used when collecting video.

The invention relates to the technical field of nanowire photoelectric detector preparation, in particular to a beta-Ga2O3 nanowire / p-Si heterojunction photoelectric detector and a preparation method thereof.The preparation method comprises the following steps that Au particles are subjected to annealing treatment after evaporation, and an area containing Au nanoparticles and an area not containing Au nanoparticles are formed on the surface of a p-Si substrate; putting a Ga elementary substance and the annealed p-Si substrate into a tubular furnace, and enabling the Ga elementary substance to grow a beta-Ga2O3 nanowire on the Au-containing nanoparticles; and respectively manufacturing electrodes on the surface of the beta-Ga2O3 nanowire and the surface of the p-Si substrate on which no nanowire grows, so as to obtain the beta-Ga2O3 nanowire / p-Si heterojunction photoelectric detector. The preparation method disclosed by the invention has the advantages of high material quality and yield, simple device preparation method, low cost and the like, and the practical application of the beta-Ga2O3 nanowire-based solar-blind ultraviolet photoelectric detector is promoted.

The invention provides a direct air carbon capture and concrete mineralization maintenance coupling system which comprises a direct air carbon capture device, a concrete mineralization maintenance device and a fan, and the fan provides stable airflow for the direct air carbon capture device for CO2 adsorption. A path of high-pressure steam is led out by the concrete mineralization curing device to perform CO2 desorption on the direct air carbon capture device, and the direct air carbon capture device is provided with a first gas path for conveying desorbed CO2 to the concrete mineralization curing device. The steam utilization efficiency of a CO2 mineralization curing concrete technology is improved, and the technical cost is reduced.

The utility model discloses a refrigerator door body assembly, which relates to the technical field of household appliances and comprises a refrigerator, the upper part of the refrigerator is fixedly connected with a refrigerating chamber right door, the lower part of the refrigerator is fixedly connected with a freezing chamber right door, and the bottom of the refrigerating chamber right door is fixedly connected with a hinge. The side face of the hinge is movably connected with a door body fixing piece and a refrigerator fixing piece, the inner side of the freezing chamber right door is fixedly connected with a roller shutter device, and the side face of the roller shutter device is movably connected with a roller shutter sliding door. According to the utility model, the door body fixing sheet and the refrigerator fixing sheet are matched together, so that the hinge is fixed in the refrigerator, and the problem that the hinge used by the existing refrigerator door body is easy to fall off or damage when being frequently used is solved; the problem that heat preservation and heat insulation of a refrigerator are affected when an existing refrigerator freezing chamber is frequently used is solved.

The invention belongs to the technical field of biological enzymes, and particularly relates to a preparation method of immobilized lipase and application of the immobilized lipase in catalysis of oil hydrolysis, and the preparation method comprises the following steps: step 1, material selection: selecting Candida antarctica lipase A, porous ceramic and a phosphate buffer; according to the preparation method of the immobilized lipase and the application of the immobilized lipase in catalysis of grease hydrolysis, porous ceramic is adopted as an immobilization carrier, and candida antarctica lipase A is immobilized; the obtained immobilized lipase is used for catalyzing a grease hydrolysis reaction, and the acid value of a product obtained after the grease hydrolysis reaction is catalyzed can reach 180-195 mgKOH / g. Compared with free enzyme, the immobilized enzyme has the advantages that the catalytic activity of the enzyme is obviously improved under the same condition; in addition, the immobilized enzyme has high thermal stability and pH tolerance; the immobilized enzyme is good in reusability and convenient to recycle.

A storage cabin capable of storing ultralow-temperature liquid hydrogen is provided with a cylindrical inner cabin, the inner cabin is supported and fixed in an outer cabin through a filling layer, the inner cabin and the outer cabin form a filling layer space, and the filling layer space is filled with low-temperature LNG or low-temperature liquid nitrogen. The inner cabin is composed of an inner cabin outer wall and an inner cabin inner wall, the inner cabin outer wall and the inner cabin inner wall form a vacuum layer, and the vacuum layer is filled with perlite and vacuumized. A double-layer compartment is arranged, an insulating layer is laid on an outer compartment, an inner compartment is of a vacuum double-wall heat insulation structure, and the space between the inner compartment and the outer compartment is filled with LNG or liquid nitrogen with the temperature close to that of liquid hydrogen. According to the scheme, the ultralow-temperature liquid state maintenance of-163 DEG C LNG or-196 DEG C liquid ammonia medium is easily realized through a mature reliquefaction system, so that the liquid state maintenance of the ultralow-temperature-253 DEG C liquid hydrogen medium is indirectly ensured, the heat transfer between the liquid hydrogen cabin and the external environment can be greatly reduced, and the technical difficulty and the technical cost of ultralow-temperature storage of the liquid hydrogen are reduced.

The present application relates to the field of battery technology, and discloses a cylindrical battery structure including a cover plate and a housing. The cover plate includes a cover plate main portion and a cover plate connecting portion fixedly connected to each other. One of an edge of the cover plate connecting portion and an edge of the housing is bent to form a bent portion, and another of the edge of the housing and the edge of the cover plate connecting portion is bent to form a hook portion. The hook portion is configured to hang on the bent portion to connect the cover plate and the housing. The cylindrical battery structure disclosed in the application has simpler connection mode, lower connection cost, and faster connection. In addition, the connection mode has lower requirements on assembly accuracy of workpieces in the housing.

The invention discloses a method for preparing silicon tetrafluoride by pyrolyzing sodium fluosilicate. The preparation method comprises the following steps: (1) respectively crushing and sieving sodium fluosilicate and an auxiliary agent, and activating at 250-620 DEG C; (2) mixing the activated sodium fluosilicate with an auxiliary agent, and performing pyrolytic reaction to obtain a silicon tetrafluoride crude product and a residual solid; and purifying the silicon tetrafluoride crude product to obtain a silicon tetrafluoride product. The method solves the problems of wall sticking and caking in the process of preparing silicon tetrafluoride through fluosilicate pyrolysis, and the decomposition efficiency is remarkably improved. Residual solids generated by pyrolysis can be recycled, and no fluorine-containing waste is generated in the process, so that the influence on the environment is effectively reduced.

The present invention relates to a method for etching a plastic substrate, said method comprising steps (A) to (C), where step (C) comprises the dip-free dispensing of an acidic etching composition comprising water and one or more manganese species. In addition, the dispensed acidic etching composition is treated in a regeneration compartment by applying a current for regeneration and return to the acidic etching composition.

The invention discloses a high-efficiency and high-yield method for artificially cultivating liquorice in a field, and relates to a method for artificially cultivating liquorice. The invention aims to solve the technical problems of low yield and difficulty in harvesting in the existing artificial liquorice planting technology. According to the method, through pretreatment of liquorice transplanted root seedlings, biological characteristics of the liquorice transplanted root seedlings are combined, a horizontal cultivation mode of horizontal placement is adopted, growth of liquorice lateral roots and the ground is promoted, and the yield of ground stems and leaves and underground rhizomes is increased; meanwhile, the transverse planting can effectively reduce the planting and harvesting difficulty, and the labor cost investment is reduced. The method can be widely applied to field liquorice cultivation, on one hand, liquorice cultivation can meet market requirements, and the effect of increasing agricultural economic income is achieved through long-term harvesting; on the other hand, as a leguminous plant, the underground root of the leguminous plant can be used for biological nitrogen fixation, after being planted for several years, the leguminous plant can be used for fertilizing soil fertility and playing a role in biological soil improvement, and meanwhile, the liquorice is a good wind-proof and sand-fixing plant, is beneficial to water and soil conservation of soil and can give consideration to ecological benefits and economic benefits.

The application discloses a fire-fighting effect evaluation method under digital modeling, and relates to the technical field of fire-fighting evaluation and public safety management. In a fire-fighting layout digital model, a parallel simulation calculation task is established for each preset fire scene, a dynamic fire development thermodynamic equation and a smoke diffusion calculation model are introduced, a flame heat spreading and diffusion process, a three-dimensional diffusion process of toxic smoke, an automatic starting response process of fire-fighting facilities after reaching a threshold value and an escape and evacuation process of people in a building are independently simulated under multi-level fire conditions, and dynamic simulation characteristic data under each fire scene is batch output. The application constructs a set of physical level general and interactive digital modeling and simulation framework. By introducing a bottom fluid partial differential equation and a thermodynamic model, the application can seamlessly adapt to modern buildings of any heterogeneous structure and complex floor without the need of developing a special model for each evaluation task.

The utility model discloses a heat supply system utilizing breeding waste foreign matters, which comprises a gasification furnace and a boiler, the gasification furnace comprises a furnace body with a heat insulation function, a gasification chamber is arranged in the furnace body, a preheating water pipe tightly attached to the gasification chamber is arranged between the furnace body and the gasification chamber, and the preheating water pipe is communicated with the gasification chamber. The output end of the preheating water pipe is connected with a boiler furnace on the inner side of the boiler through a water conveying pipe, the upper end of the gasification furnace is connected with a desulfurizer through a flue gas pipeline, and the other end of the desulfurizer is connected with a combustion stove through a pipeline. The breeding waste foreign matter is converted into the combustible gas through the gasification furnace, the combustible gas is desulfurized through the desulfurizer and then is combusted in the combustion furnace to heat the furnace pipe in the boiler, water in the furnace pipe is preheated through gasification reaction heat release in the gasification chamber, the heat supply cost is reduced, the problems of environmental protection and the like are solved, the technical cost is low, and the economic benefit is high. The method is simple in process, convenient to produce and manufacture, wide in application and suitable for industrial and civil fields.

The invention discloses a cooperative flight system based on spherical unmanned aerial vehicle magnetic attraction grabbing and collision docking, and belongs to the technical field of unmanned aerial vehicles, the system comprises an unmanned aerial vehicle and connecting arms arranged on the unmanned aerial vehicle, a control module of the unmanned aerial vehicle, and external force is sensed through collision detection so as to adjust the attitude of the unmanned aerial vehicle for docking of the connecting arms; a threaded connecting piece matched with the other unmanned aerial vehicle is arranged on the connecting arm, and the control module controls the unmanned aerial vehicle to axially rotate with the connecting arm as the axis so as to complete fixed connection between the unmanned aerial vehicles; the unmanned aerial vehicle is provided with a spherical shell, a through hole is formed in the shell, a magnetic attraction assembly is arranged on the portion, on the outer side of the through hole, of the spherical shell, preliminary butt joint of the unmanned aerial vehicle is completed through magnetic attraction, the connecting arm is a telescopic bent L-shaped cantilever, and after threaded connection is conducted through the cantilever in the vertical state, the cantilever continues to stretch so that preliminary butt joint stripping of the magnetic attraction assembly can be achieved; and the other unmanned aerial vehicle rolls horizontally, so that the two unmanned aerial vehicles are parallel, and the bottoms of the two unmanned aerial vehicles are connected through a cantilever bent into an L shape.

The invention discloses a method for recovering a carrier rocket at sea, which belongs to the field of spacecraft recovery technology, including: the first stage of the rocket enters a separation program and separates from the upper stage of the rocket, and moves downward under the action of gravity; the first stage of the rocket decelerates after descending to a preset height, enters a state of preparation for the rocket body to enter the water, and opens the tail end float; the first stage of the rocket continues to move downward, uses the tail end float to buffer the entry into the water and splashes into the water; the first stage of the rocket continues to enter the seawater downward, decelerates under the buoyancy of the tail end float, the first stage of the rocket dumps under the action of its own weight, and opens the front end float during the dumping process; after the dumping is completed, the first stage of the rocket is in a horizontal lying state and floats on the sea surface under the buoyancy of the front end float and the tail end float; and the first stage of the rocket is towed back to the port by a ship to complete the recovery at sea. The invention reduces the requirements for the landing accuracy of the rocket, reduces the technical difficulty and cost, improves the reliability of the rocket recovery, and has high social and economic value.

The invention relates to an exosome extraction method of a high-viscosity and high-protein-content egg white sample, which adopts ammonium sulfate pretreatment to promote non-exosome protein sedimentation, and combines differential centrifugation and ultrafiltration to further remove the non-exosome protein in the sample, thereby effectively reducing the non-exosome pollution and improving the exosome purity.

The utility model relates to a flywheel with adjustable rotational inertia, which belongs to the technical field of flywheels and comprises a flywheel set and an adjusting and clamping device fixedly connected with the flywheel set. The flywheel set sequentially comprises a first flywheel piece, a second flywheel piece, an upper outer cover, a sliding block, a groove disc, a rotating disc and a fixed disc from top to bottom, wherein the first flywheel piece and the second flywheel piece are connected in a staggered and sliding mode, the sliding block is connected with the flywheel pieces in a sliding mode, the groove disc is used in cooperation with the first sliding block and the second sliding block, and the rotating disc is fixed to the adjusting clamping device and connected with the sliding block in a sliding mode. The lower outer cover is fixedly connected with the upper outer cover and is in sliding connection with the rotating disc; the ratchet gear is used in cooperation with the flywheel piece, the pawl and the pull rod are used in cooperation with the ratchet gear, the pawl and the pull rod are sleeved with the same torsional spring, the arc-shaped rack is installed on the rotating disc, the gear is matched with the arc-shaped rack in a meshed mode, the rotary knob is rotated to drive the ratchet gear, the gear and the arc-shaped rack to move, and then the rotating disc is driven to rotate. Therefore, the flywheel sheet is rotatably opened and closed.

The application discloses a kind of enterprise production load rate prediction method and device, it is related to electric power big data technical field.The method comprises: obtaining the electricity consumption of target enterprise in the period to be predicted;According to the electricity consumption and the production load rate prediction model generated in advance, the production load rate prediction value of the period to be predicted is determined;Wherein, the production load rate prediction model is obtained according to the clustering analysis of the multiple historical electricity data of target enterprise and the corresponding multiple historical production load rate data.This application can obtain the quantitative value of enterprise production load rate according to power data, compared with prior art, which can only judge the enterprise stop limit production according to the electricity data, which has been significantly improved;This application only needs the yield data corresponding to the characteristic electricity of enterprise to establish the relationship between electricity and yield;This application can be applied to various industrial enterprises, has wide applicability, and the technical cost is lower, easy to popularize and apply.

The invention discloses a precious metal two-dimensional code processing method, and relates to the technical field of laser processing. According to the novel laser printing method, laser parameters (such as power, frequency and scanning speed) are optimized so as to adapt to jewelry materials such as different precious metals, gems and jades, damage to the materials is reduced, meanwhile, the definition and readability of two-dimensional codes and bar codes are ensured, a special printing process is adopted, and the printing efficiency is improved. For example, the material is pretreated before printing or is subjected to coating treatment after printing, so that the durability and the stability of the two-dimensional code and the bar code are improved. A self-adaptive printing algorithm is designed for materials in complex shapes, and it is ensured that the two-dimensional code and the bar code can be accurately printed on precious metal, gemstone and jade in various shapes and do not deform.

The invention provides an integrated information management system for physical examination, relates to the field of medical information management, and solves the problems of data islands, lack of continuous services, poor function compatibility and limited application of an existing physical examination system. The system comprises a client health examination subsystem which is used for providing query, reservation and presentation services of multiple types of health examination information for health examination clients and feeding back operation information of the health examination clients to a hospital health examination subsystem; the health examination module is correspondingly connected with different hospital business systems and carries out data interaction, the intelligent examination guiding module calculates a flow path of health examination according to operation information of an examination customer, and the health management module carries out data interaction with the health examination module. Health physical examination information and continuous health management service of health state prediction and return visit are provided for the physical examination client; according to the invention, data resources are fully utilized, and better physical examination service is provided.