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30results about How to "Simplify the build process" patented technology

Converter station AC filter group circuit breaker abnormal arcing modeling analysis method

A converter station AC filter group circuit breaker abnormal arcing modeling analysis method comprises the following steps: firstly, carrying out time mark alignment, amplitude calibration and filtering de-noising on wave recording signals such as AC bus voltage and filter branch current to obtain high-quality input data; then, combining a primary wiring diagram, enabling an alternating current system to be equivalent to an ideal power supply and series impedance, enabling circuit breaker arcing to be equivalent to arc resistance changing along with time, and constructing an equivalent circuit model comprising the power supply, the impedance, a capacitor, an electric reactor and dynamic arc resistance; establishing a state space equation according to a voltage and current constraint relation, and performing time domain solution by adopting a two-step two-order or three-order diagonal implicit Runge-Kutta method to obtain voltage and current responses of the whole process of the fault; on this basis, the arc resistance change is inversed according to the ratio of arc voltage to current, the current zero passage is identified through the resistance symbol change at adjacent moments, and the zero passage section is smoothed; and finally, the inversion result is verified again by means of the simplified equivalent model.
Owner:UHV CONVERTER STATION BRANCH OF STATE GRID SHANGHAI ELECTRIC POWER CO +1

Preparation method of high-transmittance and high-fog coating with microstructure on surface

The invention relates to the technical field of optical films, and discloses a preparation method of a high-transmittance and high-fog coating with a microstructure on the surface, and the preparation method comprises the following steps: uniformly mixing a low-surface-energy initiator, a monofunctional acrylate monomer, a polyfunctional acrylate monomer, an acrylate prepolymer and a micromolecular initiator in an organic solvent to obtain light-cured glue; coating the light-cured glue on the surface of a light-transmitting base material, and drying to obtain a coated wet film; and the coating wet film is subjected to ultraviolet irradiation curing, and the high-transmittance and high-fog coating with the microstructure on the surface is obtained. The preparation method has the advantages that the raw materials are simple and easy to obtain, the composition is uniform, processing is convenient, and the equipment requirement is low, the prepared surface wrinkle coating film has high transmittance, high haze and good uniformity, and the surface wrinkle morphology and roughness can be controlled through processing process parameters such as heating time and illumination time.
Owner:SHANGHAI JIAOTONG UNIV

Flash file generation method and device, equipment and storage medium

ActiveCN115934134BImprove update efficiencySimplify the build processCode generationSoftware update
The application discloses a flashing file generation method and device, equipment and a storage medium, and belongs to the computer technical field. The application obtains application layer code corresponding to to-be-updated software, controls first script running, generates a compilation file based on the application layer code, controls second script running, generates a flashing file based on the compilation file, and enables an upper computer to update the to-be-updated software based on the flashing file. Therefore, the application completes the compilation of the to-be-updated software through the first script, and on this basis, the flashing file which can be directly applied to the to-be-updated software update is obtained through the second script, the process of generating the flashing file is simplified, and the software updating efficiency is improved.
Owner:ZHEJIANG GEELY HLDG GRP CO LTD +2

Emergency rapid deployment tent film structure system and building method thereof

The invention relates to the technical field of tent film construction, and provides an emergency rapid deployment tent film structure system which comprises a tensioning rod which is located between at least two supporting frames and rotates, a tent film is wound through rotation of the tensioning rod, tensioning of the tent film is achieved, the tensioning rod is in a cam shape, and the tensioning rod is connected with the supporting frames. Rotation between the upper inserting plate and the lower inserting plate is achieved through rotation of the tensioning rod, the upper inserting plate and the lower inserting plate are located on one side of the top of the supporting frame to rotate, a torsional spring is arranged at the transmission position, an inserting assembly is arranged at the end, making contact with the lower inserting plate, of the upper inserting plate, and the upper inserting plate is located between the tensioning rod and the lower inserting plate. By integrating a linkage structure, the construction process is simplified, and a single person can perform rapid deployment; the tensioning force and the clamping force are synchronously enhanced, and fixation is reliable; the upper inserting plate and the lower inserting plate are butted to block rain and snow, and sealing performance is improved; the structure meets the rainproof requirement, disassembly and assembly are convenient, and the use and maintenance cost is reduced.
Owner:SHUOZHOU ECONOMIC DEVELOPMENT ZONE HAILI MEMBRANE CONSTRUCTION TECHNOLOGY CO LTD

A method and device for managing and constructing a simulation analysis model engine of a pump station operation process

PendingCN122242320ASimplify the build processLower technical thresholdDesign optimisation/simulation
This invention relates to the interdisciplinary field of hydraulic engineering and computer simulation, and particularly to a method, apparatus, equipment, and computer-readable storage medium for managing and constructing a simulation analysis model engine for pump station operation. The method includes: establishing a multi-dimensional simulation model based on the hydraulic and fluid changes during pump station operation; constructing a model engine management architecture and a simulation engine management system based on this architecture, and building a simulation model database; constructing standardized interfaces based on the simulation engine management system and different types of multi-dimensional simulation models; obtaining simulation parameters from the simulation model database through the standardized interfaces, running the corresponding multi-dimensional simulation model, and storing the output data in the simulation model database; and constructing a simulation model management system based on the simulation engine management system. By constructing standardized simulation model interfaces and a unified model engine management system, the construction process of multi-dimensional coupled simulation models for pump stations is significantly simplified.
Owner:TIANJIN UNIV

Multifunctional air cushion lamp with portable adjusting support

The invention discloses a multifunctional air cushion lamp with a portable adjusting support, and belongs to the technical field of air cushion lamps, the multifunctional air cushion lamp comprises a main supporting rod and a lamp skin frame used for installing a lamp panel module, and the main supporting rod is connected with a steering assembly used for adjusting the lighting direction of the lamp panel module through an indicating box; the inner side wall of the indication box is connected with a magnetic breaking assembly through a telescopic butt joint column. Through the arrangement of the quick-assembly male head and the quick-assembly female seat, quick unfolding, locking and separation of the carbon fiber tube supporting frame can be realized by utilizing a locking structure of the quick-assembly male head and the quick-assembly female seat, and by combining with the rotary folding design of the fixed seat, the building and dismounting process of the lamp is greatly simplified, time and manpower are saved, and transportation and storage are convenient; meanwhile, the adjusting locking mechanism of the three-way pipe is in butt joint, the air cushion lamp mode and the lamp distribution mode can be rapidly and stably switched, the requirements of different shooting or lighting scenes are met, and the universality and scene adaptability of the tool are improved.
Owner:SHENZHEN SUNNY XIAO TECH CO LTD

A method, system and device for constructing a normal variation recovery coefficient model

ActiveCN116956476BSimplify the build processAchieve high-precision forecasting
The application relates to a construction method, system and device of a novel normal variable restitution coefficient model, and the method comprises the following steps: establishing a physical model of a ball and a base contact collision, obtaining a functional relationship between a restitution coefficient and an equivalent strain in a plastic stage according to an energy equivalence principle under the condition that a volume of an effective deformation domain at a maximum compression moment is equal to a volume of an elastic effective deformation domain; establishing a numerical simulation model of a ball-base normal contact collision, performing numerical simulation of the contact collision under multiple working conditions based on the simulation model to obtain simulation results; introducing a dimensionless parameter and fitting a mapping relationship between the dimensionless parameter and the equivalent strain in the plastic stage by combining the simulation results; and obtaining the normal variable restitution coefficient model based on the functional relationship between the restitution coefficient and the equivalent strain in the plastic stage and the mapping relationship between the dimensionless parameter and the equivalent strain in the plastic stage. According to the application, high-precision prediction of contact collision dynamics response results can be realized without relying on complex contact collision theories.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Method and device for constructing plug-in piece combination model and electronic equipment

The application provides a construction method and device of a patch combination model and electronic equipment. A target model and a preset number of initial patch models are acquired. A patch model corresponding to the target model is generated based on the target model and the initial patch models. The position parameters and / or size parameters of the patch model match the target model. Rendering parameters of the patch model are determined based on rendering parameters of the target model. A patch combination model corresponding to the target model is constructed based on the patch model and the rendering parameters of the patch model. This method simplifies the construction process of the patch combination model and improves the construction efficiency.
Owner:NETEASE (HANGZHOU) NETWORK CO LTD

A recombinant plasmid, a recombinant engineering bacterium for expressing HIV P55 protein and a method for preparing and purifying HIV P55 protein

PendingCN122648455ASolve the problem of translation inefficiencylittle loss of activityAntigenProtein target
The application provides a recombinant plasmid for expressing HIV P55 protein, a recombinant engineering bacterium and a method for preparing and purifying HIV P55 protein, and belongs to the technical field of protein engineering. The recombinant plasmid takes a PET-30a vector as a backbone plasmid and comprises an expression fragment of the HIV P55 protein. The E. coli Rosetta-PET-30a system adopted in the application has low cost, short culture period (the whole process can be completed within 96 hours), mild induction condition, less degradation of the target protein and can realize large-scale industrial production; the prepared HIV P55 protein has good antigen activity and can be widely applied to the fields of HIV diagnostic kit preparation, subunit vaccine research and development and antiviral drug screening.
Owner:ZUNYI NO 1 PEOPLES HOSPITAL

Optical modulation module

This invention discloses an optical modulation module, comprising a substrate, a top cover, an internal laser, a bias control board, an optical switch, a modulator, and an optical splitter. The optical output terminal of the internal laser is connected to the first input terminal of the two-input-one-output optical switch; the external optical input interface is connected to the second input terminal of the optical switch; the output terminal of the optical switch is connected to the optical input terminal of the modulator, and the switching is controlled by the bias control board to achieve flexible selection of internal and external light sources. The modulated optical signal is split into one path by the optical splitter and sent to the bias control board, forming a closed-loop feedback to accurately lock the operating point. The modulator is installed via a vertical mounting plate and a detachable port, enabling convenient replacement and upgrades. This invention, through its highly integrated design, achieves plug-and-play functionality and provides the flexibility of dual-source selection and the maintainability of core components in a single module, significantly improving the application range and economy of the product.
Owner:YIZHA OPTOELECTRONICS (HANGZHOU) CO LTD

Test methods, systems and electronic equipment for vehicle powertrains

This application relates to the field of vehicle power technology, and provides a testing method, system, and electronic equipment for vehicle powertrains. This application uses a user terminal to generate control signals corresponding to each operating condition node according to the communication protocol of the vehicle controller, and simulates the communication environment between the vehicle controller and the powertrain under test. The simulated communication environment sequentially triggers the powertrain under test to execute each control signal, and test results are generated based on the output messages of the powertrain under test. Compared to testing the vehicle powertrain using the vehicle controller, simulating the communication environment between the vehicle controller and the powertrain under test through the user terminal, and simulating the vehicle controller triggering the powertrain under test to execute each control signal, reduces the number of controller hardware required to achieve vehicle-level powertrain control and simplifies the virtual data construction process, thereby reducing the testing cost of vehicle powertrains.
Owner:CHONGQING SELIS PHOENIX INTELLIGENT INNOVATION TECH CO LTD

Object movement control method, apparatus, and electronic device

PendingCN122230320ASimplify the build processincrease motivationVideo games
This invention provides an object movement control method, apparatus, and electronic device. Responding to a movement control command for a virtual object, the device controls the movement of the virtual object within a game scene; responding to a path node unlocking event in the game scene, it controls the switching of locked path nodes from a locked state to an unlocked state; responding to a path node connection event in the game scene, it controls at least some of the unlocked path nodes to connect, forming a target path in the game scene; and responding to a preset relationship between the virtual object and the target path, it controls the virtual object to automatically move along the target path. This method increases the player's enthusiasm for exploration by setting unlockable path nodes in the game scene. Simultaneously, the method automatically generates the target path based on unlocked path nodes, and the virtual object can automatically move along the target path, thereby simplifying the path generation process and improving the player's gaming experience.
Owner:NETEASE (HANGZHOU) NETWORK CO LTD

A method and apparatus for verifying a digital circuit, an electronic device, and a medium

PendingCN122287490ASimplify the build processReduce the difficulty of verificationControl signalSoftware engineering
This application discloses a verification method, apparatus, electronic device, and medium for digital circuits, relating to the field of computer technology. The method includes: acquiring the hardware description language code of the circuit under test; determining a first control signal, a first clock signal, and a data signal corresponding to the first control signal based on the hardware description language code; processing the first clock signal according to preset processing rules to obtain a second clock signal; acquiring a first simulation waveform of the first control signal during the simulation process of the circuit under test, a second simulation waveform of the first clock signal during the simulation process, a third simulation waveform of the second clock signal during the simulation process, and a fourth simulation waveform of the data signal during the simulation process; and verifying the circuit under test based on each simulation waveform to obtain a verification result. This application simplifies the verification environment for digital circuits and improves the verification efficiency of digital circuits.
Owner:SHANDONG YUNHAI GUOCHUANG CLOUD COMPUTING EQUIP IND INNOVATION CENT CO LTD

Main control room can reside area boundary into a bundle of cable sealing performance test device

This invention relates to a testing device for the sealing performance of bundled cables at the boundary of the habitable area in a main control room. The device comprises a testing component, a detection component, a pressurizing component, a connecting component, and a sealing component. Cables are threaded through the testing component. The detection component is mounted on the testing component to detect the pressure within it. The pressurizing component is connected to the test chamber via the connecting component to pressurize the testing component. The sealing component is disposed within the testing component to seal the gaps where the cables pass through it. Therefore, this device can detect deficiencies in current cable sealing processes in nuclear power plants and identify potential leakage points. Furthermore, by using the device of this embodiment, multiple comparative tests can be conducted to determine the appropriate type of sealing material to be used to seal the gaps where cables pass through the holes.
Owner:CHINA NUCLEAR POWER ENGINEERING COMPANY LTD +2

A key generation method, apparatus and storage medium

ActiveCN116781255BUnpredictableSimplify the build process
This disclosure discloses a key generation method, apparatus, and storage medium. The key generation method includes: obtaining an N-order target matrix, where the sum of all elements in each row and / or column of the target matrix is ​​1; generating a set corresponding one-to-one with each row and / or column of the target matrix, the set comprising N consecutively connected sub-intervals, the set covering [0,1]; generating random probability values ​​corresponding one-to-one with each row and / or column of the target matrix, determining the position identifier of the sub-interval to which the random probability value belongs in the set corresponding to the corresponding row and / or column; and generating a key sequence based on the number of random probability values ​​corresponding to each position identifier. The key generation method in this disclosure does not require additional circuitry, is simple to implement, and the generated key sequence is unpredictable and cannot be deciphered from an already generated sequence. Therefore, it simplifies the key generation process while ensuring key security.
Owner:SHRONG ENERGY TECH CO LTD

A method for optimizing group train tracking operations considering communication latency

ActiveCN120096647BSimplify the build processSimplified distributed control algorithmsInternal combustion piston enginesArtificial lifeSimulationParticle swarm algorithm
This invention discloses a group train tracking operation optimization method considering communication delay, comprising the following steps: establishing a heavy-haul railway train group with a "leader-follower" topology; constructing a multi-objective optimization model based on vehicle characteristic constraints, speed limits, and safety distance constraints; generating random communication delays in the model, calculating the time steps corresponding to the delays, and having the following train make control decisions based on the state information of the preceding train at the previous time step; and solving for the running speed of the following train in the multi-objective optimization model using a particle swarm optimization algorithm. This group train tracking operation optimization method effectively solves the problems of uncertainty and dynamic response lag caused by communication delays during the tracking operation of heavy-haul railway train groups. It can not only significantly reduce tracking errors between trains and improve speed synchronization, but also effectively reduce distance fluctuations during acceleration and deceleration phases, ensuring stable train spacing.
Owner:CENT SOUTH UNIV +1

Camera firmware offline upgrading device and method

The invention relates to the technical field of camera firmware upgrading, in particular to camera firmware offline upgrading equipment and method. The equipment comprises a built-in power supply assembly, a main controller, a local interaction assembly, a storage medium interface and a communication interface assembly, the built-in power supply assembly is used for supplying power to equipment; the main controller is connected with the built-in power supply assembly; the local interaction assembly is connected with the main controller and is used for providing a local operation interface; the storage medium interface is connected with the main controller and is used for accessing a removable storage medium in which firmware data is stored; the communication interface assembly is in communication connection with the main controller and is used for connecting a camera; the main controller is used for writing firmware data from the storage medium interface into the connected camera through the communication interface component; according to the equipment, independent power supply is achieved through the built-in power supply assembly, an offline operation interface is provided by means of the local interaction assembly, the equipment is suitable for outdoor and after-sales scenes without stable power supply, and the convenience and reliability of firmware upgrading of the camera are improved.
Owner:SHANGHAI BAOLONG AUTOMOTIVE CORP

Low-altitude economy cloud platform service encapsulation and dynamic combination charging system and method

ActiveCN121585575BSimplify the build processShorten application developmentMetering/charging/biilling arrangementsResource consumptionResource utilization
The application discloses a low-altitude economy cloud platform service packaging and dynamic combination charging system and method, relates to the technical field of low-altitude economy service management and charging, and comprises the following steps: a service packaging module encapsulates low-altitude core capabilities into standardized APIs and generates documents; a service arrangement module combines services through a visual interface, intelligently analyzes dependencies and provides fault-tolerant compensation; a multi-dimensional charging module collects multi-dimensional resource consumption data and generates detailed account bills; an open gateway and service market module provides unified access and service subscription management; a resource adaptation layer integrates basic capabilities and adapts to heterogeneous devices; a developer ecological support module provides whole-process development and profit sharing support; and a system operation and maintenance module guarantees stable operation and elastic scaling of the platform. The application reduces the development threshold through standardized packaging, accelerates application innovation through visual arrangement, and improves resource utilization efficiency through multi-dimensional charging; the application has high stability and adaptability, and realizes efficient operation and large-scale development of low-altitude economy services.
Owner:CHANGSHA DILU DIGITAL TECH

A codeless digital twin training system

This invention discloses a no-code digital twin training system, belonging to the field of digital twin training systems. It includes: a front-end framework, cloud 3D API encapsulation, back-end support, data management, a visual editor, security, and scalability and maintainability. The front-end framework uses Vue, React, or UI as its basic framework, allowing for easy construction of real-world cases without programming, completely eliminating the limitation of traditional systems that require technical personnel to have programming skills to modify or create training content. Through a pre-built script function, the system can accurately recreate real business scenarios, making fault simulation cases more closely resemble actual operations, significantly improving the effectiveness and realism of the training. The innovatively introduced interactive function of the twin device model combines training questions with device model actions, significantly enhancing the interactivity and engagement of the training.
Owner:SUPER HIGH VOLTAGE BRANCH OF STATE GRID JIANGXI ELECTRIC POWER CO LTD +1

Dangerous driver longitudinal model construction method based on Levy random characteristics

PendingCN121980784AReduce collection workload burdenovercome limitationsDesign optimisation/simulationConstraint-based CADDriver/operatorLongitudinal model
The invention discloses a dangerous driver longitudinal model construction method based on Levy random characteristics. The method comprises the following steps: firstly, collecting vehicle mass driving data in an actual road traffic environment, deriving driving intensity by using a driving condition Markov state equation, fitting the driving intensity by using Levy distribution, and generating a driving intensity random sample; secondly, calculating a driving intensity boundary of the current acceleration, finding an index of a driving intensity random sample at the boundary, reserving a long tail value of the index to ensure a rapid transfer path of a large and small step length of the driving intensity, randomly selecting the long tail value as the driving intensity at the current moment, obtaining the acceleration at the next moment, constraining the acceleration and calculating the speed at the next moment; and finally, updating the current speed and the current acceleration, and judging whether the maximum duration is reached or collision occurs or not until a dangerous longitudinal driving behavior sequence is output. According to the method, the random dangerous driver longitudinal behavior can be quickly generated, and a reference is provided for simulation test of an accelerated automatic driving longitudinal auxiliary driving system.
Owner:XIAN TECH UNIV

Humanized KRAS G12D orthotopic liver cancer animal model, construction method and application thereof

The present application provides a complex model combining a humanized in situ liver cancer nude mouse and a KRAS G12D nude plasmid transgene, which can quickly reach 100% tumorigenesis in 7 weeks from modeling, and presents histological features similar to human clinical hepatocellular carcinoma, is suitable for a complex model for new drug research and development in the fields of precise treatment of liver cancer, PROTAC targeted protein degradation agents, small molecule drugs, small nucleic acid drugs and gene therapy, and can achieve efficient and economical modeling of human hepatocarcinogenic gene-induced liver cancer humanized mice.
Owner:ZHEJIANG LONGCHUAN BIOMEDICAL TECH CO LTD

Biological hybrid, construction method thereof and application of biological hybrid in denitrification nitrogen removal of high-salt nitrogen-containing wastewater

The invention belongs to the technical field of water pollution treatment, and discloses a biological hybrid, a construction method thereof and application of the biological hybrid in denitrification nitrogen removal of high-salt nitrogen-containing wastewater, the biological hybrid is constructed by an H.titanicae BH1 strain and a MoS2 nano material, and the nitrate reduction rate of the constructed H.titanicae BH1 / MoS2 biological hybrid is remarkably improved compared with that of a single H.titanicae BH1 strain; meanwhile, the hybrid can enhance the denitrification process by improving the activity of a denitrification key enzyme, promoting the secretion of extracellular secretions (EPS) and enhancing the electron transfer performance, and shows high salt adaptability superior to that of a single strain within the salinity range of 2%-7%. The invention provides a novel microbial preparation and a technical scheme for efficient treatment of high-salt nitrogen-containing wastewater, has the advantages of high treatment efficiency, strong environmental adaptability, no secondary pollution and the like, and has a wide application prospect.
Owner:TIANJIN CHENGJIAN UNIV

Building facade and top surface labeling method based on SAR imaging three-dimensional rendering inverse inversion

PendingCN121937760AOverlap and effective distinctionSolve the problem of unblocking and maskingImage enhancementImage analysisPoint cloudData set
A building facade and top surface labeling method based on SAR imaging three-dimensional rendering inverse inversion automatically determines projection ranges of a roof and a facade of a building in an SAR image according to a building target three-dimensional point cloud model, is suitable for a building structure with a complex real scene, and is high in practicability. According to the method, automatic processing can be achieved while the destacking problem in the SAR image labeling process is effectively solved, the labeling precision and the fine granularity are correspondingly improved while the labeling efficiency is improved, the method can be popularized to labeling of other target projection ranges of the SAR image, and support is provided for construction of a large-scale high-quality data set of the SAR image.
Owner:CHINA ACADEMY OF SPACE TECHNOLOGY

Stamping die of numerical control lathe

The utility model belongs to the technical field of machining, and particularly relates to a numerical control lathe stamping die which comprises a base arranged on a numerical control lathe, and a driving unit is correspondingly arranged above the base. The lower die is used for placing a workpiece; the upper die and the lower die are correspondingly formed, and the upper die can move relatively in the direction of the lower die so as to carry out secondary pressing on the workpiece, and a formed workpiece with an upper wall, a side wall and a flange is formed; wherein the upper die moves towards the direction of the lower die by a first distance and presses the upper wall and the side wall of the formed workpiece while applying primary pressure, then the upper die can be matched with the lower die to form a middle die, the middle die comprises a variable punch, and the variable punch is elastically supported by an elastic piece; compared with the prior art, the flange pressing device has the advantages that the production cost is effectively reduced, and the working efficiency is improved.
Owner:ZHEJIANG XINHEIYANG AUTOMATION EQUIP CO LTD

Optimal selection method for recycled asphalt pavement structure of high-grade highway in cold region

PendingCN121998504AThere will be no early damagePractical engineering application effect guaranteeData processing applicationsRoad engineeringStructural engineering
The invention relates to the technical field of road engineering, and discloses a cold region high-grade highway recycled asphalt pavement structure optimization method which comprises the following steps: constructing an evaluation index system; the fatigue cracking life, the permanent deformation and the low-temperature crack resistance are checked in advance, when a preset threshold value requirement is met, the subjective weight of each evaluation index is determined based on row and column summation relation optimization of the preliminary matrix and a root method, and the objective weight of each evaluation index is determined according to the decision matrix and the risk correction coefficient; dynamically determining a weight fusion coefficient based on the cold region risk sensitivity index; the cold region risk sensitivity index is calculated according to an extreme low temperature coefficient and a freeze-thaw cycle coefficient; determining the comprehensive weight of each evaluation index by adopting a comprehensive weighting method; calculating the relative close degree of each recycled pavement structure scheme; and sorting the schemes according to the relative closeness to determine an optimal recycled pavement structure scheme. According to the method, the optimal recycled pavement structure suitable for the cold region can be accurately screened out.
Owner:SHANDONG HI SPEED GRP CO LTD +2

Resistance-marker-free auxotrophic bacillus subtilis as well as construction method and application thereof

PendingCN121931017AEliminate synthesisnormal growthBacteriaMicroorganism based processesShuttle vectorEnzyme Gene
The invention provides a resistance marker-free auxotrophic bacillus subtilis and a construction method and application thereof, the newly constructed strain takes bacillus subtilis 168 as a starting strain, indole-3-glycerophosphate synthase gene trpC of the bacillus subtilis 168 is knocked out, synthesis of tryptophan in the growth and metabolism process of the strain 168 is eliminated, and the resistance marker-free auxotrophic bacillus subtilis is obtained. The shuttle vector YH46 is constructed by taking pMD-19T as a framework, so that the shuttle vector YH46 can normally grow only in the presence of exogenous tryptophan, and meanwhile, a universal auxotroph shuttle vector YH46 is constructed by taking pMD-19T as the framework, so that convenience is provided for high-efficiency expression of genes in bacillus subtilis; the tryptophan auxotrophic strain BS-TR is constructed through double exchange by using a homologous recombination principle, the construction process is simple and easy to implement, and the strain BS-TR does not contain a resistance gene selection marker, can be used as a food-grade engineering bacterium, and can be used for intracellular expression or extracellular secretion of target protein for production.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI +1

Balloon dilatation device for embedding and fixing mesh in peritoneal surgery

PendingCN121927190ASimplify the build processeasy to set upSurgeryMedical devicesVisual field lossExtraperitoneal space
The balloon dilatation traction fixing device comprises a catheter body, the catheter body is of a tubular structure with an opening in one end, and fluid is injected into the catheter body through the opening end after the closed end of the catheter body enters a human body cavity. A balloon is arranged on the outer wall of the closed end of the catheter body, and a net piece imbedding assembly and a needle holder are arranged in the catheter body. An extraperitoneal space is established in a balloon dilatation mode, so that the defects that a traditional vagina operation is narrow in view field, difficult to expose and inconvenient to operate are overcome, in addition, when the extraperitoneal space is established through the balloon, the mesh is conveniently placed, adjusted and fixed through cooperation of the mesh placement assembly and the needle holder, and the operation efficiency is improved. The fixing of the mesh is simplified, the establishment of an extraperitoneal space (gap) is also facilitated, and the whole-course quantification mode of the mesh ensures the operation effect and also can reduce the possibility of pain caused by incapability of quantifying the tightness of the mesh in the operation.
Owner:THE FIRST AFFILIATED HOSPITAL OF WANNAN MEDICAL COLLEGE (YIJISHAN HOSPITAL OF WANNAN MEDICAL COLLEGE)

Vertical structure cast-in-situ concrete construction structure

ActiveCN224591762UGuaranteed stabilitySimplify the build processArchitectural engineeringRebar
The application discloses a vertical structure cast-in-situ concrete construction structure, which comprises a bottom plate steel bar group, a vertical formwork, a pre-embedded part and an operating frame. The bottom plate steel bar group comprises upper side steel bars and lower side steel bars, and the vertical formwork is perpendicular to the bottom plate steel bar group. The pre-embedded part comprises an upper structure, a lower structure and a connecting body, the lower structure is connected to the lower side steel bars, the upper structure is connected to the upper side steel bars, the connecting body is connected to the upper structure and the lower structure respectively, and the connecting body extends out of the bottom plate steel bar group. The operating frame is connected to the connecting body at the bottom, and the operating frame supports the vertical formwork. The vertical structure cast-in-situ concrete construction structure provided by the application simplifies the erection process of the operating frame, improves the stability of the operating frame, avoids the problem of leaving holes on the bottom plate, and has remarkable technical effects and practical values.
Owner:THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU

A complex mold cavity arc additive trajectory generation method

This invention discloses a method for generating arc additive manufacturing trajectories for complex mold cavities. The method involves layering and slicing the arc additive manufacturing target model to obtain polygonal data of the additive cavity cross-section; dividing the maximum envelope rectangle into m rows and n columns horizontally and vertically to obtain the background mesh of the maximum envelope rectangle; calculating the level set function value of the background mesh nodes using a signed distance function, where the level set function value is positive when the background mesh node is inside the cross-sectional polygon, and negative otherwise; and calculating the maximum value ψ of this function. max and in [0,ψ max The process involves dividing the material into equal parts with a spacing equal to the fill spacing L, resulting in a sequence of equal parts. Each element in this sequence is then traversed to obtain the corresponding horizontal set function contour line. This contour line represents the additive trajectory of the complex cross-section, offset by a certain distance. This invention avoids complex polygon operations such as polygon intersection, difference, and union, greatly simplifying the process of generating equidistant additive trajectories for complex cross-sectional contours and improving the efficiency of additive trajectory generation in arc additive manufacturing.
Owner:CHONGQING JIEPIN TECH +3

A knowledge graph-based unmanned aerial vehicle fault diagnosis method, device, equipment and medium

The application discloses a kind of unmanned aerial vehicle fault diagnosis method, device, equipment and medium based on knowledge graph, it is related to unmanned aerial vehicle fault diagnosis technical field, comprising: based on the data characteristics integration symptom vector obtained by interpreting unmanned aerial vehicle parameter;Symptom vector contains reference symptom;Reference symptom includes reference symptom parameter and the occurrence probability of reference symptom parameter;According to data characteristics, construct target knowledge graph model;The symptom node of the target symptom mapped in target knowledge graph model is activated, and the activated model is obtained when the occurrence probability is greater than activation threshold value;According to activated model, path search is executed to obtain several target fault propagation paths of each target fault, and the fault probability of target fault is calculated based on the path information and symptom information of several target fault propagation paths;Symptom information includes the occurrence probability and quantity of symptom node;Integrate target fault and fault probability to obtain target diagnosis report.Can improve the precision and efficiency of unmanned aerial vehicle fault diagnosis.
Owner:AVIC (CHENGDU) UAS CO LTD