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BACTERIUM, OBTAINING METHOD THEREFOR, AND APPLICATIONS THEREOF

Provided are a bacterium, an obtaining method therefor, and applications thereof. The bacterium has the characteristic of co-production of 1,3-propanediol and D-lactic acid. Further, the bacterium is Klebsiella oxytoca, comprising Klebsiella oxytoca PDL-5 CCTCC M 2016185. In the obtaining method for the bacterium, the bacterium can be obtained by directly screening wild bacteria satisfying conditions from the environment or performing genetic engineering modification on wild bacteria.

Federal learning method and device and storage medium

The invention discloses a federal learning method and device and a storage medium. The method comprises the following steps: an edge node receives a federated learning task sent by a federated learning platform, and sends the federated learning task to a terminal; and receiving model information sent by the terminal through the edge network.

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Dry type high -pressure wall bushing

... 种新型高压电容型套管，包括载流体、电容式绝缘、外护套、法兰、伞裙和接线端子组成。其中电容式绝缘中可添加机械受力层，增强套管的机械强度，外护套的材质可采用冷缩管、热缩管或玻璃布环氧树脂的材质，增强机械强度的同时可以保证套管性能的稳定性，起主要支撑作用的法兰与主绝缘的安装中起粘接作用的材质有单纯的绝缘脂改为复合型材料，使得其粘接更牢固，结构更加稳定可靠。 ...

Online estimation method and system for junction temperature of power electronic device

The invention relates to a junction temperature online estimation method and system for a power electronic device, and the system comprises an electrical signal obtaining module which is used for obtaining an electrical signal of a to-be-measured power electronic device; the electrical characteristic quantity calculation module is used for calculating the electrical characteristic quantity of the to-be-tested power electronic device based on the electrical signal of the to-be-tested power electronic device; and the junction temperature estimation module is used for inputting the electrical characteristic quantity of the power electronic device to be measured into a junction temperature estimation neural network model so as to obtain the junction temperature of the power electronic device. The method comprises the steps of firstly obtaining an electrical signal of a to-be-measured power electronic device, then calculating an electrical characteristic quantity of the to-be-measured power ...

Phase shift control compensation method

The invention discloses a phase shift control compensation method, which comprises the following steps: a closed-loop control system in an LLC phase shift mode is provided, the closed-loop control system comprises a compensation network Gcomp (s), a power circuit equivalent transfer function Gpower (s) and a feedback network H (s), and the compensation network Gcomp (s), the power circuit equivalent transfer function Gpower (s) and the feedback network H (s) jointly form a system open-loop gain of the closed-loop control system, the equivalent transfer function Gpower (s) of the power circuit is a function in direct proportion to sin theta, and theta is a phase shift angle; and a computational logic inversely proportional to sin theta is introduced into the compensation network Gcomp (s) so as to eliminate the influence of the phase shift angle theta on the system open-loop gain. According to the invention, the calculation logic inversely proportional to the sin theta is introduced into ...

Movable SF6 intelligent monitoring system and concentration concentration area calculation method

The invention discloses a movable SF6 intelligent monitoring system and a concentration concentrated area calculation method, and the method employs an AOA high-precision positioning technology to timely obtain the position coordinates of a moving trolley, and determines the position of a leakage point according to the algorithm of a mathematical geometric model when the intelligent moving trolley obtains the SF6 gas leakage, thereby achieving the purpose of monitoring the SF6 gas leakage. In addition, nearby information such as concentration and temperature can be uploaded in real time, and relevant information is stored and reserved; in the operation process of the system, position coordinates are established according to the position relation between the point position labels, the position of the trolley is timely acquired to the remote position, the trolley timely uploads SF6 detection information, when the trolley is triggered, an alarm module is timely triggered, a geometric model ...

Heterogeneous network slice interconnection and intercommunication device and method

The invention belongs to the technical field of novel network architecture, and discloses a heterogeneous network slice interconnection and intercommunication device and a heterogeneous network slice interconnection and intercommunication method, which have the basic idea that a programmable slice gateway is deployed on a forwarding plane, and user services are accurately identified and controlled through definable data analysis and processing forwarding capability, so that the heterogeneous network slice interconnection and intercommunication is realized. The service consistency and continuity of the service data among the heterogeneous network slices are ensured, and the heterogeneous network slice adaptation is realized; a heterogeneous network slice cooperative control unit is deployed on a control plane, slice control information is interacted with slice control planes of two heterogeneous networks, a forwarding plane slice gateway configuration strategy is generated, slice control ...

Method for improving student information identification accuracy

The invention discloses a method for improving student information identification accuracy. The method comprises the following steps: correcting a page; obtaining a whole screenshot containing student information; character sequence cutting; identifying a single-character picture; outputting an identification result, and directly outputting the result when no altering error mark is identified; the method comprises the following steps of: scanning the position of one character upwards and downwards at the same time when a wrong alteration trace is recognized at a certain character position, and after a handwritten trace is found, combining the handwritten trace with the existing wrong alteration trace to process an image, and combining the handwritten trace with the existing wrong alteration trace to process an image into a special wrong alteration digital mode recognition model; and a result is output after re-identification. According to the scheme, effective identification can be carried ...

Driver circuit for GaN switched mode power converter

A driver circuit for driving a GaN power commutation switch of a switched mode power converter. A sensing component is connected to the GaN switch for sensing a parameter such as a peak current for power commutation. The energy storage component provides a specific turn-on voltage between the gate and the source of the GaN switch. The charging and discharging of the energy storage component are adjusted, and the sensing is disabled, the timing of which is synchronized with the charging and discharging functions of the energy storage component. The voltage across the sensing component is prevented from reducing the generated gate-source drive voltage of the GaN switch.

Application of regulating and controlling MfERF086 gene in growth and development and/or cold resistance of medicago sativa

The invention belongs to the technical field of plant genetic engineering. The invention provides application of regulating and controlling an MfERF086 gene in growth and development and/or cold resistance of alfalfa. Overexpression of the MfERF086 gene increases the plant height of alfalfa, accelerates the leaf development speed, increases the leaves and enhances the cold resistance; and the MfERF086 gene inhibition expression reduces the alfalfa leaf development speed, so that the plant height is reduced, the leaf development is slowed down and reduced, and the cold resistance is reduced. The application of the medicago sativa ERF transcription factor MfERF086 gene regulation and control preparation in regulation and control of growth and development and/or cold resistance of medicago sativa provides a novel and practical method for preliminarily breeding new medicago sativa varieties by utilizing a genetic engineering technology.

Handwritten form recognition system for correcting wrong drawing of choice questions

The invention discloses a handwritten form recognition system for correcting wrong selection questions. The handwritten form recognition system comprises a central processing module, the database module is used for inputting and storing data, collecting and acquiring data resources of handwritten characters in a manner of downloading and simulating the handwritten characters on line, and dividing the data resources into sub-databases of a single-option error database, a double-option error database, a three-option error database, a four-option error database and a five-option error database; a data enhancement module; and a handwritten character recognition module. According to the scheme, the database is divided into various types of option error databases, and during identification, if the handwritten character data subjected to error correction is identified, the handwritten character data is compared with the various types of option error databases in the database module to obtain correct ...

SYSTEM EMULATION METHOD AND SYSTEM

The present invention relates to a system emulation method and system. The system emulation method includes: in step 1, abstracting a system into an entity and a relation, wherein the entity characterizes various component parts in the system, and the relation characterizes the association between the parts; in step 2, setting entity parameters and relation parameters, wherein the entity parameters include capability, action and effect, and the relation parameters include a communication topology parameter, an information interactive parameter and a task flow parameter; and in step 3, running the emulation and calculating the efficacy of the system, wherein the efficacy of the system characterizes the running effect of the system. The present invention can realize system emulation, providing effective support to system design and optimization, greatly reducing risk in system design and construction, and improving the credibility and design level of the design achievement.

FILTER AND PURIFIER HAVING SAME

A filter (100) and a purifier having the filter (100). The filter comprises a frame (1) and a plurality of filtering devices (2). The frame (1) comprises an upper mounting plate (11) and a lower mounting plate (12) which are spaced apart from each other, and a plurality of connecting rods (13) connected between the upper mounting plate (11) and the lower mounting plate (12). The upper mounting plate (11) and the lower mounting plate (12) are ring-shaped, and the plurality of connecting rods (13) are circumferentially disposed around the center of the ring and spaced apart from each other. A mounting hole (131) is defined between two adjacent connecting rods (13) and between the upper mounting plate (11) and the lower mounting plate (12). The plurality of filtering devices (2) are respectively disposed in the plurality of mounting holes (131), and each filtering device (2) seals a corresponding mounting hole (131).

EVAPORATION METHOD, EVAPORATION MASK MODULE, DISPLAY PANEL, AND DISPLAY APPARATUS

Disclosed is an evaporation method, comprising: carrying out first evaporation on a base substrate (100) by means of a first mask (10), so as to form a first evaporation sub-pattern (30) on the base substrate (100), wherein the first mask is provided with a first opening area; and carrying out second evaporation on the base substrate (100) by means of a second mask (20), so as to form a second evaporation sub-pattern (40) on the base substrate (100), wherein the second mask (20) is provided with a second opening area, and the first evaporation sub-pattern (30) and the second evaporation sub-pattern (40) are combined to form an evaporation pattern. An evaporation mask module, a display panel and a display apparatus are further comprised.

Target detection method of multispectral double-flow network

The invention relates to a target detection method of a multispectral double-flow network, and belongs to the field of image recognition. According to the method, two data streams exist in a Backbone starting stage of YOLOv5, feature extraction operation is carried out on an input visible light image and an input infrared light image, firstly, a double-flow network is constructed, a first fusion module carries out modal fusion feature learning based on a residual network and an improved SwinTransform modal fusion module, and a second fusion module carries out modal fusion feature learning based on an improved SwinTransform modal fusion module; the second modal fusion module and the third modal fusion module are subjected to modal fusion in a feature map superposition mode on the basis of a residual network, after operation of the three modal fusion modules is repeated, the Backbone stage is ended, and a later Head layer and a prediction program are the same as YOLOv5. According to the invention ...

METHOD AND APPARATUS FOR CONTROLLING FALL OF VIRTUAL OBJECT, ELECTRONIC DEVICE AND STORAGE MEDIUM

A method for controlling the fall of a virtual object, comprising: displaying a following button in an area corresponding to a first virtual object, the following button being used for controlling a second virtual object to follow the fall of the first virtual object; when a touch operation on the following button of the first virtual object is detected, obtaining falling dynamic information of the first virtual object in a virtual scene; and in the virtual scene, controlling the second virtual object to fall according to the falling dynamic information. Also provided are an apparatus for controlling the fall of a virtual object, an electronic device, and a computer readable storage medium. The described method reduces the complexity of the operation, improves the control efficiency of controlling the fall of the virtual object, and prevents operation errors.

Telescope reading control system based on B/S architecture

The invention discloses a telescope read-out control system based on a B/S framework, which comprises a user interaction module, a Web server response module, a system processing module and a hardware communication module, the user interaction module and the Web server response module form a B end of a front-end browser part, and the system processing module and the hardware communication module form an S end of a server part. The B end and the S end are mutually independent; and remote data acquisition, data processing and equipment control of the telescope reading system are realized in a web form. Based on a B/S (Browser/Server) mode, namely, a browser Browser/Server mode, a www browser technology is utilized, and a universal browser is used for realizing powerful functions which can be realized by complex special software originally.

Financial data processing method based on distributed storage

The invention relates to the technical field of distributed storage, in particular to a financial data processing method based on distributed storage, and the method comprises the steps: building an incidence relation between storage nodes and data types through detecting the storage sensitivity of each storage node when different types of data are stored; determining a storage trend of each data type based on historical records of different types of data stored by a user side, determining a storage state of a storage node associated with each current type of data based on the data storage amount of each storage node, and determining a storage state of each storage node associated with each current type of data based on the storage trend of each type of data in different periods and the storage state of each storage node in the current period; and the storage mode for storing various types of data in the current period is determined, so that the data storage efficiency and effect of distributed ...

Vehicle monitoring method and system based on artificial intelligence

The invention provides a vehicle monitoring method and system based on artificial intelligence, and the method comprises the steps: obtaining a historical vehicle remote sensing image data set of a monitoring region, and a satellite remote sensing image and image data of a current vehicle, and carrying out the preprocessing of the historical remote sensing image data set, and obtaining a historical preprocessing data set; training the image filling network based on the historical preprocessing data set to obtain a trained image filling network; based on the preprocessed data set and the trained image filling network, obtaining a filling data set, and training the initial detection network based on the filling data set to obtain a vehicle detection network; inputting the satellite remote sensing image into a vehicle detection network to obtain real-time vehicle distribution data; and correcting the real-time vehicle distribution data according to the image data to obtain a vehicle monitoring ...

METAL HOUSING FOR COMMUNICATION DEVICE, PREPARATION METHOD THEREFOR, AND APPLICATIONS THEREOF

Provided are a metal housing for a communication device, a preparation method therefor, and applications thereof. The preparation method for the metal housing comprises: 1) injecting plastic on the inner surface of a metal housing (1) to form a plastic layer (2) provided with at least one narrow gap; 2) forming a decorative layer (3) on the outer surface of the metal housing (1); 3) forming a protective layer on the outer surface of the decorative layer (3); 4) etching the metal housing (1) corresponding to the narrow gap from the inner surface of the metal housing (1), so as to enable the metal housing (1) at the position of the narrow gap to penetrate through; 5) forming a colloidal stuffed piece (4); and 6) removing the protective layer.

Data clustering method and device, processor and electronic equipment

The invention discloses a data clustering method and device, a processor and electronic equipment. Relates to the field of big data, and comprises the following steps: obtaining a data sample set, the data sample set comprising N data samples arranged in order, and N being a positive integer; k sample combinations are determined from the N data samples, each sample combination comprises M continuously arranged data samples, K is a positive integer, and M is a positive integer smaller than N; screening each group of sample combinations to obtain K groups of screened sample combinations; acquiring a center sample of each group of screened sample combinations, and determining the center sample as a mass center of the screened sample combinations to obtain K mass centers; and clustering the data sample set based on the K centroids. Through the data clustering method and device, the problem of low accuracy of data clustering in related technologies is solved.

ALUMINUM ALLOY HOUSING AND PREPARATION METHOD THEREFOR AND PERSONAL ELECTRONIC DEVICE

Provided are an aluminum alloy housing and a preparation method therefor and a personal electronic device. The aluminum alloy housing comprises an aluminum alloy matrix (1) and an oxide film layer (2). The aluminum alloy matrix (1) has a slit (3) thereon. The oxide film layer (2) comprises an inner anode oxide film layer (21) and an outer anode oxide film layer (22), the inner anode oxide film layer (21) has inner anode oxide film layer nanopores, the outer anode oxide film layer (22) has outer anode oxide film layer nanopores, and the inner anode oxide film layer nanopores and the outer anode oxide film layer nanopores are each independently filled with coloring dyes.

Mining power equipment

... 本实用新型提供种矿用电力设备，包括箱体以及开设在所述箱体上的观察窗，所述观察窗为倾斜设置；所述观察窗的倾斜角度为10度?20度；所述观察窗包括支架以及分别安装在所述支架两侧的显示屏和压盖，所述压盖上安装有固定座，所述固定座与所述压盖之间设置有钢化玻璃。本实用新型提供的矿用电力设备的有益效果为：本实用新型提供的矿用电力设备，其上设置倾斜的观察窗，便于观察电力设备内部的操作，并且倾斜设计使得观察窗与地面形成视觉角度更具人性化，操作快捷，外形美观；并且在箱体上设置快开门结构，方便电力设备的维护和检测。 ...

Essence rice identification method

The invention discloses an essence rice identification method which comprises the following steps: weighing uncrushed complete rice, adding acetonitrile for rapid vortex oscillation extraction, taking supernate, filtering, performing HPLC-MS/MS (High Performance Liquid Chromatography-Mass Spectrometry/Mass Spectrometry) analysis, and detecting whether the sample contains at least one of vanillin, methyl vanillin, ethyl vanillin, ethyl maltol, 2-acetylpyridine, 2-propionyl pyridine, 2-acetyl-1-pyrroline and 5, 6, 7, 8-tetrahydroquinoxaline or not, and determining that the sample is the essence rice if the sample contains at least one of vanillin, methyl vanillin, ethyl vanillin, ethyl maltol, 2-acetylpyridine, 2-propionyl pyridine, 2-acetyl-1-pyrroline and 5, 6, 7, 8-tetrahydroquinoxaline. The technical problem that endogenous flavor components and artificially added essence are difficult to effectively distinguish in the essence rice identification process is solved, the method can be used ...

Log classification method and device based on distributed centroid screening and hierarchical clustering

The invention provides a log classification method and device based on distributed centroid screening and hierarchical clustering, and relates to the field of big data. The method comprises the steps of obtaining N log sample sets and corresponding copies, and determining K centers in each log sample set; according to the K centers in each log sample set, performing cluster division on log samples in a copy of the log sample set to obtain K clusters of the copy and a cluster center of each cluster; determining a high-quality cluster and a cluster center of the high-quality cluster in all clusters of the copy according to the number of log samples contained in each cluster in the copy; forming a high-quality point set by the cluster centers of the high-quality clusters of all the copies; according to the cosine distance of each high-quality point in the high-quality point set, fusing each high-quality point to obtain a target high-quality point set; and taking the high-quality points in ...

Adaptive large-scale multi-target electric vehicle charging station optimization deployment method

The invention belongs to the field of optimal deployment of electric vehicle charging stations, and provides a self-adaptive large-scale multi-target electric vehicle charging station optimal deployment method. Under the condition that charging resources are limited, an electric vehicle charging station deployment scheme which enables the overall charging efficiency of a charging network to be maximum, the overall power consumption load balance degree of charging piles in a charging station to be maximum, the overall failure rate of the electric vehicle charging network to be lowest and the deployment cost of the charging station to be lowest is found; an adaptive difference optimization strategy based on fuzzy rough set neighbor classification guidance is used for improving a TwoArch2 algorithm, and an electric vehicle charging station deployment scheme which realizes multi-objective optimization and has the best index compromise is obtained through population evolution and iteration.

Phosphorus-free normal-temperature composite metal surface degreasing agent and preparation method thereof

The invention provides a non-phosphorus normal-temperature composite metal surface degreasing agent and a preparation method thereof, the non-phosphorus normal-temperature composite metal surface degreasing agent comprises the following raw material components in percentage by mass: 2-4% of a penetrant, 3-6% of a surfactant, 3-5% of a complexing agent, 1-3% of an auxiliary agent, 1-2% of a defoaming agent and the balance of deionized water, and the total mass percentage of the components is 100%. The penetrating agent comprises long carbon chain diisomerized aliphatic dihydric alcohol polyoxyethylene ether and isooctyl alcohol polyoxyethylene ether, and the part ratio of the long carbon chain diisomerized aliphatic dihydric alcohol polyoxyethylene ether to the isooctyl alcohol polyoxyethylene ether is 1: 3; the degreasing agent has the beneficial effects that the metal part can be degreased at normal temperature, the degreasing reaction of the metal part is mild, stubborn high-viscosity ...

Multi-modal feature target detection method based on dynamic convolution and attention mechanism

The invention relates to a multi-modal feature target detection method based on dynamic convolution and an attention mechanism, and belongs to the field of image recognition. According to the method, two data streams are provided at a Backbone starting stage of YOLOv5, a visible light image and an infrared light image are respectively input, and feature extraction operation is carried out by using a dynamic convolution module ODConv, a multispectral convolution attention feature fusion module MS-CBAM and a residual network. The method has the advantages that the features of the visible light image and the infrared image are combined, multiple attention mechanisms and architectures are combined, the target detection precision of the multi-mode and small target is greatly improved, and the problem that the target detection performance is weak in the dark environment is solved. Compared with other multi-modal fusion target detection, the method is high in training speed and low in hardware ...

Urban garbage double-layer multi-target site selection-path optimization method considering negative effect

The invention relates to an urban garbage double-layer multi-target site selection-path optimization method considering a negative effect, and the method comprises the following steps: setting an upper-layer decision-making model and a lower-layer decision-making model, including two decision-making groups: a government and an environmental sanitation company, and the government and the environmental sanitation company are closely related, mutually related and mutually restricted; the negative effect influence distance is adjusted according to the included angle between the wind directions and the distance between the straight lines between the two points, and the climate of the position of the selected semi-aversive facility is fully considered. In the double-layer structure, the government, namely an upper-layer leader decision maker, determines which garbage recycling centers are built by taking economic cost and negative effect minimization as targets; and an environmental sanitation ...

ALUMINIUM ALLOY SHELL, PREPARATION METHOD THEREFOR, AND PERSONAL ELECTRONIC DEVICE

Provided are aluminium alloy shell, a preparation method therefor, and a personal electronic device, the aluminium alloy shell comprising an aluminium alloy substrate (1) and an oxide film layer (2) coating the surface of the aluminium alloy substrate (1), a slit (3) being disposed on the aluminium alloy substrate (1), the oxide film layer (2) comprising an inner layer anode oxide film layer (21) and an outer layer anode oxide film layer (22), the inner layer anode oxide film layer (21) having inner layer anode oxide film layer nano holes, and the outer layer anode oxide film layer (22) having outer layer anode oxide film layer nano holes.

PAINT FOR GLASS

A paint for glass, for use in being coated on glass to obtain a coating after complete cure. The coating can be formed by being heated along with the glass, and then is chemically strengthened by ion exchange. The coating contains silicon dioxide and an alkali metal oxide. The content of the silicon dioxide in the coating is 15-52% by mass. The content of the alkali metal oxide in the coating is not less than 3% by mass. The absolute value of the difference between the content of the alkali metal oxide in the coating and the content of the alkali metal oxide in the coated glass is less than 10%.

Experimental method and simulation device for influence of transient pressure on fetal development of SD (Sprague Dawley) rats

The invention discloses an experimental method and a simulation device for influence of transient pressure on fetal development of an SD (Sprague Dawley) rat, and the transient pressure simulation device can simulate transient pressure according to input pressure parameters, and provides an experimental space for the SD rat to receive pressure exposure; the SD rat feeding area provides an experimental site and experimental equipment for feeding SD rats; the SD rat index acquisition area provides an experimental site and experimental equipment for acquiring physiological indexes of SD rats and fetuses of the rats. The device can simulate the transient pressure in the high-speed train, and can carry out animal exposure experiments. By acquiring growth and development indexes of exposed SD rats and fetuses of the SD rats and performing statistical difference analysis on the growth and development indexes and indexes of a control group, the influence of transient pressure in the high-speed ...

Radio astronomical interference signal reduction method, device and system and computer equipment

The invention relates to a radio astronomical interference signal reduction method, device and system and computer equipment. The method comprises the steps that at least two beam signals are acquired, a covariance matrix for all the beam signals is obtained according to the beam signals, and the beam signals comprise sub-signals from at least two directions; performing eigendecomposition processing on the covariance matrix to obtain signal eigenvectors and eigenvalues corresponding to the sub-signals, and extracting interference eigenvectors corresponding to the interference signals from the signal eigenvectors based on the eigenvalues; and obtaining a target reduction result for the interference signal according to the signal feature vector and the interference feature vector. By adopting the method, the problem of low accuracy of radio astronomical interference signal reduction in related technologies can be solved.

LATEX normalization method

The invention discloses an LATEX normalization method, which comprises the steps of inputting a latex expression, rendering katex, recursively analyzing, recoding and proofreading, calling katex by python through multiple threads, rendering the input latex expression, obtaining an intermediate result of katex rendering, and taking the intermediate result as an analytic tree; performing analysis and secondary processing on the analysis tree in a recursion mode; and when the output of the analysis group is {} including the left bracket and the right bracket, judging whether the analysis object is an operator, and if the analysis object is the operator, specifying the name of the operator in front of the left bracket or the right bracket. According to the scheme, latex expressions irrelevant to semantics are removed, some redundant expressions in latex training labels are removed, and the recognition rate of the model is greatly improved; the characters required by the latex for representing ...

POLYPEPTIDE WITH ASPARTATE KINASE ACTIVITY AND USE THEREOF IN PRODUCTION OF AMINO ACID

Provided are a polypeptide with aspartate kinase activity and the use thereof in the production of an amino acid. Specifically, provided are a novel polypeptide with aspartate kinase activity, a recombinant polypeptide, a polynucleotide, a nucleic acid construct, a recombinant expression vector, a recombinant host cell, and a method for producing an amino acid. The polypeptide with aspartate kinase activity is a mutant mutated at one or more positions corresponding to positions 293, 294 and 307 of the amino acid sequence as shown in SEQ ID NO: 1. Compared with a polypeptide having the sequence as shown in SEQ ID NO: 1, the mutant polypeptide removes the feedback inhibition of lysine on aspartate kinase, has high aspartate kinase activity, and can be used for the stable and efficient production of lysine and derivatives thereof.

Kmeans log classification method and device based on distributed sample screening

The invention provides a kmeans log classification method and device based on distributed sample screening, and relates to the field of big data. The method comprises the following steps: acquiring N log sample sets and corresponding copies, determining K centers in each log sample set, and performing cluster division on log samples in the copies to obtain cluster centers of each cluster of the copies; forming the cluster centers of the clusters in all the copies into an initial center set, determining the cosine distance between the cluster centers, and carrying out fusion processing on the cluster centers to obtain a first center set; according to cosine distances between cluster centers in the first center set and K centers in the log sample set, K minimum distances are obtained through calculation, and a grade label of the log sample set is determined; and extracting a target number of log samples from all the log sample sets based on the grade labels, determining K centroids from the ...

Temperature-controllable electric ignition device and flash point tester with same

The invention discloses an innovative temperature-controllable electric ignition flash point tester, which comprises a power supply system, an ignition device, a flash point detection device and an oil product stirring and heating device, the ignition device comprises a platinum ignition wire, and the rear part of the ignition device is also connected with an igniter adjusting system. The ignition power of a platinum ignition wire of the ignition device is adjusted through the igniter adjusting system, and the power source system provides working electric energy for the igniter adjusting system, the flash point detection device and the oil product stirring and heating device. The problems that the normal working power cannot reach the rated power and the flash point temperature deviates because the ignition wire is oxidized and aged after working for a period of time are solved, and accurate control over the flash point temperature is achieved.

Application of noble metal-loaded cation-doped HAP in catalytic combustion of VOCs (Volatile Organic Compounds)

The invention belongs to application of noble metal-loaded cation-doped HAP in catalytic combustion of VOCs (volatile organic compounds). The catalyst comprises HAP and an HAP carrier containing different doped cation components, the different cation components mainly comprise cerium, titanium, tungsten and vanadium, and the catalyst is prepared by adopting a hydrothermal method; the noble metal substances gold, ruthenium, platinum and palladium are loaded on the carrier, and the catalyst is prepared by adopting a urea precipitation method. The catalyst prepared according to the invention has strong heteroatom resistance, and is resistant to poisoning of chlorine, sulfur and nitrogen atoms; meanwhile, the catalyst has the characteristics of high temperature resistance and sintering resistance, the structural property of the catalyst is kept stable at continuous high temperature, and inactivation is not easily caused. The preparation method disclosed by the invention is simple, and the chemical ...

HIGH-STRENGTH CHEMICALLY STRENGTHENED GLASS AND GLASS STRENGTHENING METHOD

A high-strength chemically strengthened glass. At least one surface of the high-strength chemically strengthened glass comprises an ion exchange layer. The ion exchange layer contains divalent alkaline earth metal ions entering the high-strength chemically strengthened glass by means of an ion exchange type chemical strengthening process; the ion exchange layer further contains monovalent alkali metal ions entering the high-strength chemically strengthened glass by means of the ion exchange type chemical strengthening process. A method for strengthening a glass substrate, comprising the following steps: placing a glass substrate to be strengthened in an ion-exchange salt bath for ion-exchange strengthening to obtain the high-strength chemically strengthened glass. The method for strengthening a glass substrate is simple to operate and suitable for industrial production. The high-strength chemically strengthened glass has great surface compressive stress and ion exchange depth, and therefore ...

Individual-soldier ultraviolet polarization navigation system under extreme conditions

The invention provides a single-soldier ultraviolet polarization navigation system under extreme conditions. The single-soldier ultraviolet polarization navigation system comprises an optical lens (2), a photoelectric detection module (3) and a navigation calculation module (4), the optical lens (2) receives ultraviolet light of a specific spectrum band in the atmosphere and transmits the ultraviolet light to the optical detection module (3); the photoelectric detection module (3) performs polarized light detection on the received ultraviolet light and extracts polarization information of the ultraviolet light, and the polarization information of the ultraviolet light is an ultraviolet polarization image with at least four polarization angles; and the navigation resolving module (4) performs navigation resolving according to the polarization information of the ultraviolet light and outputs course angle information. According to the invention, course angle information can be provided for ...

Formula picture recognition question judgment system

The invention discloses a formula picture recognition question judgment system, which comprises a central processing module used for reading an instruction, decoding the instruction and executing the instruction; the image input module is used for collecting and inputting images; the subject classification module is used for classifying the questions into different subjects; the formula identification module is used for identifying the picture to obtain a Latex language; the measurement unit recognition module is used for recognizing measurement unit Chinese characters in the Latex language, and the data conversion module is used for converting the obtained Latex language into a sympy grammar format which can be directly recognized by Python; and the answer comparison module is used for comparing the answer with the correct answer to obtain the answer condition of each question of the student. According to the scheme, the measurement unit recognition module is arranged, so that the measurement ...

Kmeans anomaly log retrieval method based on semi-supervised density gradient monitoring

The invention provides a density gradient monitoring Kmeans anomaly log retrieval method and device based on semi-supervision, and relates to the field of big data. The method comprises the steps that log samples in a log sample set are divided into K clusters, and each cluster at least comprises one log sample serving as the mass center; obtaining an edge log sample in the cluster, and determining the centroid of the cluster and the cosine angle of the edge log sample; constructing N sample sets according to the centroid of the cluster and the cosine angle of the edge log sample; according to the cosine angle between each log sample in the cluster and the centroid of the cluster, determining a sample set corresponding to the log sample, and dividing the log sample into the sample set; and according to the number of the log samples in each sample set, determining an unstable sample set in all the sample sets, combining the unstable sample sets to form a target sample set, and determining ...

Correcting and positioning device for platycodon grandiflorum seedling planting and using method thereof

The invention discloses a correcting and positioning device for platycodon grandiflorum seedling planting and a using method of the correcting and positioning device, and belongs to the technical field of seedling planting. A correcting and positioning device for platycodon grandiflorum seedling planting comprises two mounting frames, a distance adjusting assembly is arranged between the two mounting frames, an insertion rod is arranged at the bottom of each mounting frame, a first screw rod is rotationally arranged on each mounting frame, a sleeve is in threaded connection with each first screw rod, a mounting plate is connected to the outer side of each sleeve, an elastic telescopic rod is connected to each mounting plate, and the elastic telescopic rods are connected to the mounting plates. An arc-shaped positioning plate is connected to the end, away from the mounting plate, of the elastic telescopic rod, a growth self-driving mechanism is arranged on the arc-shaped positioning plate ...

Name matching method and device based on multiple data sources, equipment and medium

The invention discloses a name matching method and device based on multiple data sources, equipment and a medium. The method comprises the following steps: searching contact names by the multiple data sources and establishing a retrieval word stock; after contact names are recognized through voice, the contact names and the corresponding pinyin are matched with the keywords in the data sources one by one; if the matching is successful, generating a data set according to a matching success result, and returning the data set; if the matching is unsuccessful, carrying out a multi-dimensional most similar matching algorithm, and judging whether the contact name is matched with the regular expression set or not; if yes, generating a data set according to a matching success result, and returning the data set; and if not, carrying out a similarity distance matching algorithm step, and returning several most similar contacts according to requirements. According to the method, the related contacts ...

Urban rail transit unmanned train wheel set automatic turning repair method and equipment

The invention relates to an urban rail transit unmanned train wheel set automatic turning repair method and equipment. The method comprises the following steps that a turning repair operation plan is obtained; and when the train stops to a set position, judging whether the turning repair wheel pair of the train is successfully aligned according to the turning repair operation plan, if so, generating an alignment success signal, and executing the automatic turning repair operation of the wheel pair according to the turning repair operation plan, and if not, generating an alignment instruction, and executing the automatic front-back alignment operation of the train based on the alignment instruction. Until the alignment success signal is generated; and when a turning repair completion signal is generated, turning repair rear wheel pair parameters are updated. Compared with the prior art, the device has the advantages that the automation level of wheel set turning repair operation is improved ...

Power distribution network single-contact multi-fault reliability evaluation method based on influence increment

The invention relates to a power distribution network single-contact multi-fault reliability evaluation method based on influence increment. The method comprises the following steps: S1, establishing an evaluation model; s2, dividing a feeder area according to the switch data information in the power distribution system line to obtain feeder division data information; s3, constructing a k-order fault set; s4, traversing the k-order fault set; s5, judging a current high-order fault type; s6, judging whether the k-order fault set is traversed or not; s7, judging whether the k order is an enumeration order upper limit or not, and if so, entering the next step; and S8, calculating the reliability index of the power distribution system. According to the method, the reliability evaluation efficiency of the power distribution network containing the distributed new energy power generation equipment can be effectively improved while the calculation precision is ensured.

Device for generating mode locking ultraviolet laser

... 本实用新型公开了种锁模紫外激光器的产生装置，包括泵浦光源、谐振腔单元、倍频单元和输出单元，泵浦光源输入至谐振腔单元后，产生的1064nm锁模激光射入倍频单元，经过三硼酸锂晶体二倍频与三倍频的参量转换后得到355nm激光，最后由输出单元进行光束质量的调制，得到高质量的锁模紫外激光。本实用新型采用掺钕钒酸钇晶体为工作物质性能优良，对泵浦光有较高的吸收系数和更大的受激发射截面，与三硼酸锂晶体配合使用，能够达到较好的倍频转换效率；同时应用半导体可饱和吸收镜提供锁模的自启动机制，可以制成紫外锁模激光器。此激光在经BBO晶体后自发参量下转换得到轨道角动量纠缠态，可应用于量子通信领域在轨道角动量纠缠的制备。 ...

METHOD FOR PREPARING ISOPHORONE DIAMINE BY MEANS OF HYDROGENATION REDUCTION OF ISOPHORONE NITRILE IMINE

The present invention relates to a method for preparing isophorone diamine by means of a hydrogenation reduction of isophorone nitrile imine. The hydrogenation reduction is continuously carried out in a multi-stage bubble column reactor loaded with a supported alkaline cobalt catalyst, wherein isophorone nitrile imine is successively in countercurrent contact with hydrogen in each stage of the reactor, so as to obtain the isophorone diamine. The preparation method solves the problem of back-mixing, and further improves the conversion rate and the cis:trans product ratio.

Optically active interference measurement device in whirlpool

... 本实用新型公开了种涡旋光的干涉测量装置，包括：涡旋光产生单元、控制单元、涡旋光调制单元、共轭涡旋光干涉单元和图像采集单元。涡旋光产生单元用于产生涡旋光束；控制单元用于改变涡旋光的传播光路；涡旋光调制单元用于对涡旋光束的拓扑荷进行调制；共轭涡旋光干涉单元用于将束涡旋光分成两束，并将其中束涡旋光转化为另束的共轭涡旋光，然后对两束光进行干涉；图像采集单元用于对两束共轭涡旋光的干涉强度图进行采集，通过对采集数据进行分析从而可以获得涡旋光拓扑荷的阶数和符号。本实用新型利用改进的M‐Z干涉仪和携带有涡旋相位板VPP的方形环路装置提出了种简单的没有器件引入干涉影响的整数和半整数拓扑荷干涉测量装置。 ...

Cubical switchboard removes instrument

... 本实用新型提供种开关柜移动工具，包括牛腿板以及设置在所述牛腿板侧的顶盖，所述牛腿板内侧设置导轨，且所述导轨侧安装支撑座；所述支撑座侧连接传动轴，且所述传动轴端连接摇臂；所述牛腿板底端安装第二底轮，且所述牛腿板端设有与所述第二底轮卡合连接的底轮槽；所述牛腿板侧设置气缸，且所述气缸与所述顶盖连接；所述气缸侧设置旋转板，且所述旋转板底端安装第底轮；所述旋转板内侧设置连接杆，且所述连接杆顶端设置操作盘；所述操作盘内部设置伸展手柄和升降手柄，且所述升降手柄与气缸内部连接。本实用新型通过伸展手柄控制牛腿板之间的张合程度以及通过气缸和升降手柄控制牛腿板的升降，方便开关柜的移动。 ...

Foundation pit dewatering device and method

The foundation pit dewatering device comprises a dewatering foundation pit, a first mounting seat is fixed to the bottom of the foundation pit through bolts, a cross beam is locked to the surface of the first mounting seat through screws, and a first supporting plate is fixed to the surface of the cross beam through bolts. Supporting beams are symmetrically arranged on the side face of the cross beam in the length direction of the cross beam, the ends, away from the cross beam, of the supporting beams are open, telescopic beams are arranged in the supporting beams, driving assemblies for driving the telescopic beams to stretch out and draw back are installed in the supporting beams, and second supporting plates are fixed to the portions, extending out of the openings of the telescopic beams, of the supporting beams. The supporting device has the beneficial effects that the distance between the first supporting plate and the second supporting plate can be adjusted according to the requirement ...

Preparation method of hydrophobic double-layer polymer asymmetric composite membrane

The invention discloses a preparation method of a hydrophobic double-layer polymer asymmetric composite membrane. The preparation method comprises the following steps: (1) preparing a porous support layer base membrane; (2) preparing a colloidal emulsion: dissolving PDMS in n-heptane, adding distilled water, sodium dodecyl benzene sulfonate and hexadecyl trimethoxysilane into the solution obtained by stirring, uniformly stirring, then carrying out high-speed shearing stirring, then vacuumizing, and then carrying out high-speed shearing stirring, so as to obtain a white colloidal emulsion; (3) preparing dense separation layer membrane liquid: adding nano SiO2, NaOH and diethanol amine into the colloid emulsion, uniformly stirring, adding vinyl triethyl silane and zinc ethylenediamine tetraacetate, stirring, and performing high-speed shearing stirring to obtain the dense separation layer membrane liquid; (4) carrying out discharge treatment on the surface of the porous support layer base ...

VIRTUAL CARRIER CONTROL METHOD IN VIRTUAL SCENE, COMPUTER DEVICE AND STORAGE MEDIUM

The present application relates to a virtual carrier control method in a virtual scene, a computer device and a storage medium, and belongs to the field of virtual scene technology. The method comprises: displaying a display interface of an application program, the display interface comprising a scene screen of a virtual scene, the virtual scene comprising a virtual carrier; acquiring a moving speed of the virtual carrier; when the moving speed of the virtual carrier is greater than a moving speed threshold, adjusting the scene screen to a screen on which the virtual carrier is viewed in a predetermined viewing angle direction, the predetermined viewing angle direction referring to a viewing angle direction in the virtual scene from which the virtual carrier is viewed by means of a camera model, the camera model being located above a rear portion of the virtual carrier. The present application automatically adjusts the viewing angle according to the moving speed of the virtual carrier, ...

ALUMINUM ALLOY HOUSING, PREPARATION METHOD THEREFOR AND PERSONAL ELECTRONIC DEVICE

Provided are an aluminum alloy housing, a preparation method therefor and a personal device, the aluminum alloy housing comprising: an aluminum alloy base body (1) and an oxidation film layer (2), the aluminum alloy base body (1) being provided there on with a slit (3); the oxidation film layer (2) comprises an inner layer anodic oxide film layer (21) and an outer layer anodic oxide film layer (22), the inner layer anodic oxide film layer (21) being provided with inner layer anodic oxide film layer nanopores, while the outer layer anodic oxide film layer (22) is provided with outer layer anodic oxide film layer nanopores; the density of the inner layer anodic oxide film layer nanopores is 200-550 nanopores per square micrometer, and the density of the outer layer anodic oxide film layer nanopores is 550-900 nanopores per square micrometer.

Titanium black-based ceramic fiber composite material as well as preparation method and application thereof

The invention discloses a titanium-black-based ceramic fiber composite material and a preparation method and application thereof.The titanium-black-based ceramic fiber composite material comprises a photothermal conversion layer and a heat insulation supporting layer which are sequentially arranged from top to bottom, and the photothermal conversion layer is composed of titanium black obtained through in-situ carbon thermal reduction of titanium oxide fibers; the material can be used as an electrothermal material; the heat insulation supporting layer is composed of flexible ceramic fibers low in heat conductivity coefficient. The photothermal conversion layer and the heat insulation supporting layer are integrally prepared through layer-by-layer electrostatic spinning. The titanium black-based ceramic fiber composite material has a wide spectral absorption range, a good local heat effect and efficient photothermal conversion performance, the used raw materials are wide in source, low in ...

Seeding machine and intelligent detection system thereof

The invention relates to the technical field of seeding of seeding machines, and particularly discloses a seeding machine and an intelligent detection system thereof, and the system comprises a processing module which is used for dividing a soil image in front of the seeding machine into continuous seeding point areas, and obtaining soil detection data corresponding to each seeding point area from a data obtaining module; the control module is used for controlling the reseeding assembly to perform reseeding according to the state parameters of the seeds with the abnormal colors, and controlling the seeding machine to change the seeding depth according to the seeding quantity and the soil detection data of each seeding point area, the seeding point areas are divided and correspond to the seeds which are sown one by one, and then the seeds with the abnormal colors are distinguished; the method comprises the following steps of: analyzing the seeds, adding extra compensation seeds into a region ...

Peak load stabilizing method and device based on comprehensive demand response

The invention provides a peak load stabilizing method and device based on comprehensive demand response, and the method comprises the steps: determining the load proportions of loads divided into different types of loads according to the distribution characteristics of peak loads in a load curve in a region; carrying out optimization calculation on the load curve according to the comprehensive demand response and the load proportions of different types of loads divided by the loads; modeling the integrated energy system to construct an integrated energy system model; and inputting a result obtained by carrying out optimization calculation on the load curve into the integrated energy system model to obtain the output condition of each device in the integrated energy system structure so as to stabilize the peak load. According to the invention, the stabilization of the peak load is effectively realized.

Honeycomb trap and microstructure composite high-absorptivity light shield

The invention provides a honeycomb well and microstructure composite high-absorptivity light shield, which comprises a light shield body (1) and a honeycomb light absorption layer (2), the honeycomb light absorption layer (2) is arranged on the inner wall surface of the light shield body (1), light absorption microstructures (3) are distributed on the bottom surface of each honeycomb unit of the honeycomb light absorption layer (2), the light absorption microstructures (3) are pyramid-shaped, and the light absorption microstructures (3) are arranged on the inner wall surface of the light shield body (1). Comprising a supporting rod perpendicular to the bottom face of the honeycomb unit and a plurality of square blades which are arranged at equal intervals from the top to the bottom of the supporting rod, and the side lengths of the square blades are increased progressively. The light absorption microstructures with unique configurations are arranged at the bottoms of the honeycomb units ...

Tracing ring signature data sharing method based on block chain hierarchical nodes

The invention discloses a tracing ring signature data sharing method based on block chain hierarchical nodes, which comprises the following steps: firstly, generating a key by using a polynomial verification splitting mechanism according to a key negotiation idea, and then providing an information sharing scheme for anonymously sharing data and tracing anonymous data by combining block chain hierarchical function node characteristics with ring signature and bilinear mapping. Contracts of service distribution, signature verification and signature auditing are deployed on different nodes. Identity protection and safety traceability of data sharing are realized based on credible smart contracts on different function nodes of the block chain.

Intelligent processing method and system applied to outpatient telephone consultation service

The invention provides an AI intelligent processing system and method applied to outpatient telephone consultation service. In combination with the requirements and characteristics of outpatient service incoming call consultation services, an outpatient service consultation menu navigation and automatic identification module is set, outpatient service incoming call consultation is subjected to classified navigation and identification processing, and the outpatient service incoming call consultation is guided to a branch service processing module for special intelligent processing according to an identification result; in the whole process of voice navigation and branch business processing, a global anomaly recognition and decision module is constructed, user voice requirements and anomaly occurrence conditions are monitored, decisions are made and submitted to a manual intervention processing module according to a set intelligent service strategy, a manual intervention answering and response ...

Drainage device and drainage method for deep foundation pit

The drainage device for the deep foundation pit comprises the ground, the foundation pit is formed in the ground, a water collecting well is formed in the bottom of the foundation pit, and a base building platform is arranged at the bottom of the water collecting well. A driving device is arranged outside the foundation pit, the driving device comprises a caterpillar band transport vehicle fixed to the ground, a power distribution cabinet box body is arranged on the surface of the caterpillar band transport vehicle, a first bearing seat is arranged at the top of the power distribution cabinet box body, and a second bearing seat and a third bearing seat are sequentially installed along the left side of the first bearing seat; and a driving main shaft is mounted through the second bearing seat and the third bearing seat. The drainage box has the beneficial effects that by arranging the anti-blocking structure, fine silt or particles on the vibrating screen are vibrated to fall, falling impurities ...

Anti-loosening lifting tool for shaft

The invention discloses an anti-loosening lifting tool for a shaft, and belongs to the technical field of lifting tools, the anti-loosening lifting tool for the shaft comprises a shell assembly which comprises a fixed part and a movable part rotationally mounted on the fixed part; the clamping jaw assembly comprises two first pre-clamping pieces which are arranged on the fixed piece and the movable piece respectively, and the two first pre-clamping pieces are matched to clamp the shaft; the fastening assembly comprises two second pre-clamping pieces and two locking pieces, the two second pre-clamping pieces and the locking pieces are arranged on the fixed piece and the movable piece respectively, the two second pre-clamping pieces are in transmission connection with the two locking pieces respectively, the locking pieces are suitable for abutting against the clamped shaft, and when the clamped shaft slides, the locking pieces are driven to drive the second pre-clamping pieces to clamp the ...

Grayscale image coloring correction method based on Swinin-Unet

The invention discloses a gray level image coloring correction method based on Swinin-Unet, and the method comprises the steps: obtaining an original image, carrying out the preprocessing of the original image, and obtaining a preprocessing data set which comprises a training set and a test set; constructing a gray-scale image coloring correction model, and inputting the training set into the gray-scale image coloring correction model for training to obtain a trained gray-scale image coloring correction model; and inputting the test set into the trained grayscale image coloring correction model to obtain a final color picture. According to the method, the Swindow-Unet is utilized to perform color prediction on the grayscale image, and the convolutional neural network is utilized to perform color correction on the estimated color, so that the color correction effect is ensured, and the generalization is high.

Portable forestry tree fertilizing device

The invention relates to the technical field of forestry fertilization equipment, in particular to a portable fertilization device for forestry trees. The portable fertilization device for forestry trees provided by the invention can quickly sweep fallen leaves, can more sufficiently fertilize trees, can reduce waste of fertilizers, and also enables the fertilization effect to be better. A portable forestry tree fertilizing device comprises a fertilizer storage tank, and the top of the fertilizer storage tank is provided with a liquid inlet hopper and a handle; the two straps are arranged on one side of the fertilizer storage tank, and the two straps are symmetrically arranged; and the fertilizer spraying mechanism is arranged on the fertilizer storage tank. Four bevel head pressing plates sequentially move downwards in the rotating process, so that a plurality of conical ejector rods are pricked into soil, fertilizer in a guide ring plate can flow into small holes pricked by the conical ...

Calculation question judgment system

A computational question judgment system disclosed by the present invention comprises an information acquisition platform and a comparison platform, the information acquisition platform comprises an information interception module, an information preprocessing module and a content identification module, the information interception module is electrically connected with the information preprocessing module, and the content identification module is electrically connected with the information preprocessing module. The information interception module is used for photographing student answer sheets, the information preprocessing module is used for preprocessing photos photographed by the information interception module, the comparison platform comprises a content judgment module and a score calculation module, the content judgment module is electrically connected with the content recognition module, and the score calculation module is electrically connected with the content recognition module ...

Block chain-based inter-domain SDN topological pollution attack defense method

The invention provides an inter-domain SDN topological pollution attack defense method based on a block chain, and relates to the technical field of network security. Each domain controller collects all messages in the domain, extracts key information in the messages and forms a block in a transaction form, and when the controller triggers a block generation request, all transaction information in the block needs to be subjected to consensus verification of other domain controllers; any transaction between the nodes needs consensus verification of other nodes, the nodes adopt an aggregation signature method to carry out unified security authentication on the transactions, and the main node responsible for creating the block is randomly generated through a secure hash function. According to the method, some security policies are integrated in the controller by utilizing a block chain thought, meanwhile, the security of a data packet authentication mechanism is enhanced, rapid and secure ...

Business risk control method, device and equipment, computer storage medium and program

The invention discloses a business risk control method, apparatus and device, a computer storage medium and a program, a risk control module determines a first account and a first device corresponding to a target business according to a business request of the target business sent by a business module, determines account dynamic information corresponding to the first account and device dynamic information corresponding to the first device, and sends the account dynamic information to the business module; determining whether the target service may have a risk according to the account dynamic information and the device dynamic information, requesting the service module to perform enhancement verification on the target service when determining that the target service may have the risk, determining a risk probability that the first account and/or the first device are/is counterfeited according to an enhancement verification result, and sending the risk probability to the first account and/or ...

Side end plate drawing type duct piece production die

The invention relates to the technical field of duct piece production molds, and discloses a side end plate drawing type duct piece production mold which comprises a base, a supporting block is fixedly connected to the top end of the base, a duct piece mold is fixedly connected to the top end of the supporting block, and a drawing demolding mechanism is arranged on the side wall of the duct piece mold. A plurality of uniform mixing mechanisms are arranged at the top end of the base, and a plurality of telescopic moving mechanisms are arranged at the bottom end of the base; by arranging the drawing demolding mechanism, a first vibration motor drives a vibration plate to vibrate to drive a movable side plate to vibrate, so that an internally-formed concrete segment is separated from a segment mold; a first hydraulic cylinder is started to extend to drive a connecting block to slide in a limiting sliding groove and drive a movable side plate to slide in a wedging groove to move out of one ...

Cultivation device and cultivation method for surface ecological restoration of rural planning and construction

The invention provides a rural planning and construction surface ecological restoration cultivation device and method, and the device comprises a fermentation tank, the top of the fermentation tank is fixedly provided with a support, the support is fixedly provided with a plurality of layers of circular cultivation grooves, and the top of the support is rotatably connected with a rotating cylinder; the lower end of the rotating cylinder penetrates through the multiple layers of circular cultivation grooves and extends into the fermentation tank, a plurality of stirring plates are fixedly installed on the circumferential side wall of the extending end of the rotating cylinder, a spiral mandrel is rotationally connected to the bottom of the fermentation tank, and the upper end of the spiral mandrel extends into the rotating cylinder; a plurality of discharging pipes in one-to-one correspondence with the multiple layers of circular cultivation grooves are arranged on the side wall of the rotary ...

Greenway recreation service value evaluation system and method based on recreation fairness

The invention discloses a greenway recreation service value evaluation system and method based on recreation fairness. The evaluation method comprises the following steps: S1, determining an evaluation object; S2, calculating urban recreation fairness; S3, counting an average location entropy in a greenway service range; correspondingly, the evaluation system comprises an evaluation object determination unit, an urban recreation fairness calculation unit, an average location entropy statistical unit in a greenway service range and a greenway service value evaluation result calculation unit. The method focuses on the perspective of fairness of recreation, a set of complete and quantifiable urban greenway service capability evaluation technical process is formed by applying an open source big data and space statistics research method, and a scientific basis is provided for objective evaluation, planning and updating of the urban greenway.

USB TYPE-A female seat for improving EMI problem

The invention discloses a USB TYPE-A female seat for improving an EMI problem and a USB TYPE-A connector assembly. The USB TYPE-A female seat comprises an insulating body, a terminal group and a shell, the insulating body is provided with a tongue plate and a base connected to the tongue plate, the terminal group is arranged on the insulating body and comprises a plurality of terminals, each terminal is provided with a contact part, a fixing part and a welding pin, the contact parts are exposed out of the tongue plate, and the welding pins are exposed out of the base; the shell covers the periphery of the insulating body and surrounds the tongue plate to form a plugging cavity; the plurality of terminals are at least defined as GND terminals, VBUS terminals, a first group of differential signal pair terminals and a second group of differential signal pair terminals; the welding pin of the GND terminal is divided into two GND branch welding pins which are separated from each other, and the ...

Preparation method and application of isothiazole-5 (2H)-imine compound

The invention provides a preparation method and application of an isothiazole-5 (2H)-imine compound, according to the method, a thioacrylamide compound as shown in a formula I is taken as a raw material, and a polysubstituted isothiazole-5 (2H)-imine compound as shown in a formula II can be obtained by cyclization reaction of the thioacrylamide compound under the action of an organic hypervalent iodine compound. Compared with a preparation method of a polysubstituted isothiazole-5 (2H)-imine compound in the prior art, the preparation method disclosed by the invention has the advantages that the organic hypervalent iodine compound participates in the cyclization reaction of the thioacrylamide compound, so that the preparation of the polysubstituted isothiazole-5 (2H)-imine compound is realized. The synthesis method has the advantages of easily available raw materials, mild reaction conditions, no safety risk and no need of using a metal catalyst.

Application of regulating MfERF026 gene in growth and development and stress tolerance of medicago sativa

The invention provides application of regulating and controlling an MfERF026 gene in growth and development and stress tolerance of medicago sativa, and belongs to the technical field of plant genetic engineering. The invention provides application of a medicago sativa ERF transcription factor MfERF026 gene regulation and control preparation in regulation and control of growth and development of medicago sativa and enhancement of drought tolerance and cold tolerance of medicago sativa. The medicago sativa L. ERF transcription factor MfERF026 gene is inhibited from expressing in medicago sativa L., so that the drought tolerance and the cold tolerance of the medicago sativa L. can be enhanced; the medicago sativa ERF transcription factor MfERF026 gene inhibits expression in medicago sativa, so that the effect of regulating and controlling the growth of medicago sativa can be achieved, the growth rate of medicago sativa is accelerated, and the number of leaves is increased. The inhibition ...

Novel USBTYPE C electromagnetic interference resistance connector

... 本实用新型公开种新型USB TYPE C防电磁干扰连接器，包括有绝缘本体、上端子组、下端子组、屏蔽片、屏蔽套及屏蔽外壳，该绝缘本体包括基座和舌板，该上下端子组位于舌板上，该屏蔽片位于上下端子组之间，并屏蔽片两侧伸出于舌板外；该屏蔽套包括环形壁和上下夹片，该环形壁后端形成第配合框，该环形壁前端具有贴合部，该上下夹片彼此对应形成与舌板相匹配的第二配合框，该第二配合框两侧分别具有开口，于第配合框与基座之间设置有使彼此固定的扣合结构；该屏蔽外壳套于绝缘本体外部，且与环形壁电接触。藉此，通过将屏蔽套设置为体成型并兼具两侧开口的结构，提高连接器防EMI效果，避免了干涉现象，且符合连接器协会关于6.69的尺寸要求。 ...

Turbulent flow device for inter-city train

The invention discloses a turbulent flow device for an inter-city train. The turbulent flow device comprises an inter-city train body, an equipment compartment, a liftable spoiler, a hydraulic lifting driving mechanism, a spoiler vortex generating device and a rotary stopper. The turbulent flow device can effectively guide the air flowing trend at the top of the train and disturb a tail air flow when the train normally runs so that boundary layer separation of the air flow flowing through the top of the train at the tail of the train is delayed, aerodynamic resistance borne by the train during running is reduced, and energy consumption needed by running of the train is decreased. Meanwhile, during braking, certain obstruction and disturbance are provided for the airflow at the tail of the train by lifting the turbulent flow device, the direct windward area of the spoiler is increased, and therefore running resistance except wheel rail adhesion and downward pressure used for strengthening ...

USB TYPE-A male connector and electronic product

The invention discloses a USB TYPE-A male connector and an electronic product, the USB TYPE-A male connector comprises an insulation body, a terminal group and a shell, the terminal group comprises a plurality of terminals, and at least a GND terminal, a VBUS terminal, a first group of differential signal pair terminals and a second group of differential signal pair terminals are defined; the welding pins of the GND terminal are divided into two GND branch welding pins which are separated from each other, one GND branch welding pin is located between the two welding pins of the first group of differential signal pair terminals, and one welding pin of the first group of differential signal pair terminals is located between the two GND branch welding pins; the welding pins of the VBUS terminal are divided into two VBUS branch welding pins which are separated from each other, one VBUS branch welding pin is located between the two welding pins of the second group of differential signal pair ...

Preparation method of monolithic catalyst for rapid in-situ packaging of noble metal

The invention discloses a preparation method of a monolithic catalyst for rapid in-situ packaging of noble metal, the catalyst takes cordierite honeycomb ceramic and the like as a porous carrier, a molecular sieve and the noble metal are simultaneously and rapidly packaged on the honeycomb ceramic carrier in one step by using an in-situ packaging technology, and the mass content of the noble metal is generally 0.01-5%. The catalyst is applied to the field of catalytic combustion of volatile organic pollutants. Compared with a traditional catalyst in a VOCs catalytic combustion test, the prepared catalyst has higher activity and stability. According to the preparation method, small particles of the noble metal can be kept, the dispersity of the noble metal is improved, the utilization rate is increased, the sintering resistance of the noble metal material can be enhanced by utilizing a spatial isolation effect, the durability of the catalyst on high-temperature reaction is improved, and ...

Text recommendation method and device, computer equipment and storage medium

The invention relates to a text recommendation method and device, computer equipment and a storage medium. The method comprises the steps of obtaining a text recommendation request, and obtaining a first text set and user use data based on the text recommendation request; the user use data comprises function use frequency and function associated information; screening the first text set based on the user use data to obtain a second text set; and generating a recommended text based on the second text set and the function association information. By adopting the method, the text can be recommended according to the use preference of the user, the specific use of the function can be individually recommended according to the function associated information, and the effect of improving the use experience and the use efficiency of the user is achieved.

Electric wire collecting device for maintenance of mining electric shovel

The invention discloses a mining electric shovel maintenance electric wire collecting device which comprises a main body assembly, a collecting box, a driving part and a winding part, the driving part is arranged in the collecting box, and the winding part is located on the surface of the driving part; the adjusting assembly is arranged in the collecting box and comprises a supporting piece, a limiting piece, a transmission piece, a fixing piece and an adjusting piece, the supporting piece is arranged in the collecting box, the limiting piece is located on one side of the winding piece, the transmission piece is arranged on the surface of the driving piece, the fixing piece is located in the winding piece, and the adjusting piece is arranged on the surface of the winding piece. The adjusting piece is arranged in the supporting piece. The electric wire winding device has the beneficial effects that the main body assembly is arranged for winding an electric wire, any winding wheel can be ...

Subway tunnel automatic flushing method and equipment and storage medium

The invention relates to a subway tunnel automatic flushing method, which is realized based on a signal autonomous operation system TACS, and comprises the following steps: an ATS subsystem obtains a tunnel flushing operation plan and sends the tunnel flushing operation plan to an ATC vehicle-mounted controller; the ATC vehicle-mounted controller controls a flushing train to add water according to the tunnel flushing operation plan; the ATS subsystem sets a working area WZ for flushing a train, and a trackside resource manager WRC sets trackside resources of the WZ to be in a forbidden state; the ATS subsystem sends a task of entering the WZ to the ATC vehicle-mounted controller, and the ATC vehicle-mounted controller controls the flushing train to enter the WZ and reach the starting point of the tunnel flushing range; the ATC vehicle-mounted controller controls the flushing train to run within the tunnel flushing range and performs tunnel flushing; and after the flushing operation is completed ...

Rain and sewage separation system for household garbage landfill

The rainwater and sewage separation system comprises a landfill mechanism and a second pump body, and rainwater tanks are symmetrically arranged at the two ends of the landfill mechanism. According to the device, a humidity sensor and a motor are adopted, during long-term use, the humidity in the environment can be detected through the humidity sensor at the top, the generator is triggered to operate when the external humidity is increased in rainy days, and a lead screw is driven to rotate so that a connecting cylinder can move along the lead screw; at the moment, a connecting cylinder drags waterproof cloth to be laid on the surface of the top of the landfill mechanism, sealing operation on the top of the landfill mechanism is achieved, rainwater can directly flow into a rainwater tank along the waterproof cloth, the rainwater is prevented from directly entering a landfill groove, pollutants in household garbage are prevented from entering soil along with flowing of the rainwater, and ...

Preparation method of anti-pollution reverse osmosis concentrated water runner cloth

According to the preparation method of the anti-pollution reverse osmosis concentrated water runner cloth, the reverse osmosis concentrated water runner cloth is coated with the low-surface-energy coating, so that the surface of the reverse osmosis concentrated water runner cloth has the anti-adhesion characteristic, pollutant enrichment is reduced, a runner is not prone to being blocked, the runner pressure drop is reduced, the anti-pollution performance of various pollutants is further improved, and meanwhile the reverse osmosis concentrated water runner cloth is easy to clean and low in cost. The cleaning restorability is improved; two different additives are added, the particle size is controlled through the raw material ratio, an ordered micro-nano structure is formed, water flow turbulence can be effectively increased, concentration polarization can be slowed down, the mass transfer efficiency can be improved, and the element performance can be improved; according to the invention ...

Kmeans log classification method based on adaptive radius center selection

The invention provides a kmeans log classification method based on adaptive radius center selection, and relates to the technical field of big data. The method comprises the following steps: fusing log samples until the number of the log samples in a target sample set meets a first preset number condition, and constructing a first distance matrix according to the cosine distance of each log sample; obtaining a first center point according to the first distance matrix, storing the first center point into a center set, if a preset condition is triggered, continuing to perform fusion updating on the target sample set until the log sample number meets a second preset number condition, constructing a second distance matrix according to the fused and updated target sample set, and according to the second distance matrix, storing the second center point into the center set; and continuously acquiring a second center point from the fused and updated target sample set, and storing the second center ...

Device, method and equipment for automatically grinding rail transit steel rail and medium

The invention relates to a device, method and equipment for automatically grinding a rail transit steel rail and a medium, the device comprises a signal system, a steel rail grinding wagon and steel rail grinding equipment, and a heat radiation device and a heat receiving sensor are arranged outside the signal system. The signal system is in communication connection with the heat radiation device, the heat receiving sensor, the steel rail grinding wagon and the steel rail grinding equipment. And the signal system processes data of the heat receiving sensor, controls the steel rail grinding wagon to automatically drive and controls the steel rail grinding equipment to automatically grind the steel rail. Compared with the prior art, an independent detection system is not needed, the cost is low, the structure is simple, and the implementation is easy; and the manpower resource cost is saved, and the steel rail grinding efficiency is improved.

Video turn-back identification method and device based on multi-target tracking, equipment and medium

According to the video turn-back identification method and device based on multi-target tracking, the equipment and the medium provided by the invention, multi-target tracking is performed on the target object in the first video stream to obtain the corresponding second video stream; performing first direction counting and second direction counting on the second video stream to obtain a first direction counting result and a second direction counting result of each video frame; obtaining the motion direction of each video frame according to the counting result; according to the motion direction of each video frame, obtaining a turn-back identification result of the second video stream; through the above mode, based on the multi-target tracking result, the first direction counting and the second direction counting are respectively performed on each video frame, and the motion direction of each video frame is determined according to the counting result, so that the motion direction of each ...

Method for identifying filling part of answer sheet in automatic marking system

The invention discloses a method for identifying a filling part of an answer sheet in an automatic marking system, and the method comprises the steps: generating a correctable answer sheet according to question information; scanning the filled answer sheet into an electronic picture, and uploading the electronic picture to an automatic marking system; the automatic marking system corrects the electronic picture; and in combination with the question information, identifying the electronic picture, and outputting a correction result. According to the scheme, the answer sheet with the position capable of being corrected is generated, the filled answer sheet can be scanned only by using a common scanner, then the position of the scanned answer sheet is corrected, a standard answer sheet can be obtained, and therefore the problems that the cost is high and use is not flexible due to the fact that a special scanning instrument is used are solved. And an automatic marking system is fused into ...

Cotton fiber cation modification and indigo dye reduction dyeing one-bath processing technology

The invention belongs to the technical field of textile dyeing, and particularly relates to a one-bath processing technology of cotton fiber cation modification and indigo dye reduction dyeing. Comprising the following steps: (1) cation modification and indigo dye reduction dyeing process: after cotton fiber is beaten into a cake, adding a cation modifier, sodium hydroxide and a penetrant into a cone yarn dyeing machine for cation modification; the solution is not drained, a dyeing process is carried out after the temperature is adjusted, sodium hydrosulfite is added for reduction, and indigo dye is added; (2) oxidation fixation process: adding hydrogen peroxide for fixation after overflow cleaning; and (3) a post-treatment process: washing, soaping, washing, softening and drying. The cationic modification of the cotton fiber and the reduction dyeing of the indigo dye are carried out in one bath, so that the process is simplified, the dyeing time is shortened, the dye uptake is improved ...

Electric shovel device with bucket convenient to replace

The electric shovel device comprises an end head, a hanging ring and a pressing groove are arranged at the bottom of the end head, and a limiting piece is arranged in the pressing groove; the bucket comprises first center plates arranged on the top and second center plates arranged on the back face of the bucket, a first installation shaft is arranged between the first center plates, a second installation shaft is arranged between the second center plates, the hanging ring abuts against the first installation shaft, the second installation shaft is fixed in the pressing groove through a limiting piece, and the limiting piece is arranged on the second installation shaft. The bucket is convenient to install, people do not need to approach the bucket, and safety is improved.

DNA polymerase III alpha subunit mutant and application thereof

The invention relates to a DNA polymerase III alpha subunit mutant and application thereof. Specifically, the present disclosure relates to a DNA polymerase III alpha subunit mutant, an isolated polynucleotide encoding the aforementioned mutant, a vector comprising the aforementioned polynucleotide, a mutant, and a corresponding recombinant host cell, and uses of the aforementioned product. The DNA polymerase III alpha subunit mutant, the separated polynucleotide for coding the mutant, the vector containing the polynucleotide, the mutant and the corresponding recombinant host cell can improve the random mutation frequency of a strain of corynebacterium, especially a strain derived from corynebacterium glutamicum, or reduce the DNA replication fidelity rate of the strain.

Reverse pouring process for silicon graphene bay-window prefabricated part

The invention relates to the technical field of building prefabricated parts, and discloses a reverse pouring process for a silicon graphene bay-window prefabricated part, which comprises the following steps of: assembling a bay-window prefabricated part template according to a bay-window inner window frame and a mounting wall surface which need to be mounted; the bay window prefabricated part formwork is assembled according to the bay window inner window frame needing to be installed, then the bay window prefabricated part formwork is fixedly assembled through the fixing device, the bay window prefabricated part mold meeting the size of the window frame needing to be installed is preliminarily formed, and the step of measuring the size can be omitted by assembling according to the window frame; the bay-window prefabricated part formwork is spliced according to the wall installation position, so that the manufactured bay-window prefabricated part can better conform to the specification ...

Abnormal order portrait construction method based on big data

The invention relates to the technical field of big data analysis, in particular to an abnormal order portrait construction method based on big data, and the method comprises the steps: collecting a plurality of condition features triggered by a user side every a preset collection period, and calculating condition feature parameters corresponding to portrait tags; the method comprises the following steps: acquiring a plurality of portrait tags, determining whether the portrait tags and a plurality of condition features triggered by a user side are stored in a user portrait set corresponding to the user side or not, and determining tag types of the portrait tags in the user portrait set, and when the number ratio of the fuzzy portrait tags to the standard portrait tags in the user portrait set is higher than a preset ratio comparison threshold, determining that the portrait tags are stored in the user portrait set. According to the method, the relevance between each fuzzy portrait label ...

Voice message processing method, device and system, electronic device and storage medium

The invention relates to a voice message processing method, device and system, an electronic device and a storage medium, and the method comprises the steps: obtaining a voice signal collected based on a first terminal, generating interaction information according to the voice signal, and transmitting the interaction information to a first target terminal, the first terminal comprising an intelligent sound box; feedback information is obtained; wherein under the condition that the first target terminal is online, the feedback information comprises response data corresponding to the first target terminal; under the condition that the first target terminal is not online, the feedback information comprises response data corresponding to a second target terminal, and the second target terminal is associated with the first target terminal. The response data of the first target terminal comprises the first type of response data or the second type of response data. According to the invention, ...

Marketing decision-making method and device for reinforcement learning and computer readable storage medium

The invention provides a marketing decision-making method, device and system based on reinforcement learning and a computer readable storage medium, and the method comprises the steps: obtaining a state time sequence feature, and predicting a corresponding marketing behavior through a strategy network; inputting the state time sequence characteristics and the marketing behaviors into a Q function network, and dynamically deciding an optimal strategy; obtaining a feedback operation of the user for the marketing behavior, and determining a reward according to the feedback operation and the cost of the marketing behavior; and optimizing the Q function based on the rewards. By using the method, more accurate marketing can be realized.

Alkali-free and salt-free dyeing method for alginate fiber blended fiber yarn and application thereof

The invention belongs to the technical field of textile dyeing, and particularly relates to an alkali-free and salt-free dyeing method for alginate fiber blended fiber yarn and application of the alkali-free and salt-free dyeing method. Comprising the following steps: (1) preparing a dye liquor: uniformly mixing a reactive dye, a penetrating agent, a humectant and water to obtain the dye liquor; (2) on-line dyeing of the cheese: pouring dye liquor into the dye vat, dyeing in the spooling process, enabling the yarn to pass through a dyeing device to enable the dye liquor to permeate the yarn and reach a saturated state, and winding the dyed yarn on a loose bobbin to generate the loose cheese; (3) moist fixation of the cheese: carrying out fixation on the dyed loose cheese by using saturated steam; (4) post-processing the cheese; through comprehensive application of reverse osmosis reclaimed water, the nicotinic acid-based reactive dye, online yarn dyeing and high-temperature moist color ...

Colocasia esculenta yoghurt and preparation method thereof

The invention belongs to the technical field of yoghurt product processing, and particularly relates to red bud taro yoghurt and a preparation method thereof.The red bud taro yoghurt is prepared from, on the basis of 1000 parts by weight of yoghurt, 300-400 parts of red bud taro strips, 50-100 parts of millet, 20-50 parts of pumpkin seed powder, 400-500 parts of purified water, 50-80 parts of food additives and 4-6 parts of compound bacteria; the content of EAA/TAA in the yoghourt is 39-42%, and the content of EAA/NEAA is greater than 65%. The colocasia esculenta yoghurt prepared by taking the colocasia esculenta with high nutritional value as a main raw material and matching the colocasia esculenta with the millet and the pumpkin seed powder is high in protein content and rich in amino acids essential to a human body, EAA/TAA is about 40%, EAA/NEAA reaches 68% or above, the ideal protein mode requirements suggested by FAO/WHO can be met, the colocasia esculenta yoghurt tastes fine and ...

DNA information storage method based on natural and non-natural basic groups

The invention relates to a DNA information storage method based on natural and non-natural bases. The DNA information storage method comprises the following steps: extracting data information to be stored; designing a coding table, wherein the coding table is formed by mapping DNA information and data information units; sequentially confirming DNA information corresponding to the split data information in a coding table according to the split data information; sequentially arranging the DNA information in hole sites of a physical medium according to a sequence to obtain a DNA information storage carrier; during reading, DNA information is read in a mass spectrum mode and decoded. According to the storage and reading method disclosed by the invention, natural and non-natural basic groups can be fully utilized, multi-system coding is realized, and the density is expected to exceed 8bits/nt; meanwhile, the trouble that DNA needs to be synthesized from the beginning for information storage ...