The present invention discloses a clamping system and an adaptive clamping method for turning of thin-walled curved components. A curved component is positioned and clamped on the upper surface of the vacuum adsorption fixture, and a rubber sealing ring on an auxiliary support of the fixture is in contact with the inner contour of the curved surface to separate the closed space in the component into three independent adsorption force action areas: a flange end surface, a first vacuum chamber and a second vacuum chamber; and three independent vacuum channels are arranged in the fixture, the vacuum channels are communicated with sub-circuits through pneumatic hoses, and the on-off of the circuits is controlled by electromagnetic directional valves. The vacuum adsorption clamping system with multiple clamping modes can be adaptively adjusted according to the process stage of curved components.
The present invention belongs to the antifriction technical field of turning tools. Disclosed are a design method for a variable-geometric parameter antifriction turning tool, and a configuration. The method comprises: first analyzing the wear form and causes of a flank face of a turning tool during a turning process of a material which is difficult to machine; second, from among adjustable geometric parameters of the tool, preferentially selecting the rake angle, the clearance angle and the rounded edge radius of the turning tool as parameters to be designed; then, on the basis of software simulation, acquiring the rule of the parameters to be designed affecting the width of a flank wear land of the turning tool; and finally, adjusting the rake angle, the clearance angle and the rounded edge radius of the tool, so as to uniformly vary the parameters along the rounded edge of the tool and keep same constant at the straight edge of the tool, thereby finishing the design of the variable-geometric parameter turning tool. The present invention uses software simulation to evaluate the antifriction performance of tools of different configurations, thereby saving time and cost. In addition, the wear of the flank face at the tool nose of the designed variable-geometric parameter turning tool can be effectively reduced and further deterioration of the wear of a tool recess can be restrained, thereby satisfying differentiated antifriction requirements of different cutting positions of the turning tool.
An apparatus and method for cancelling leakage interference of phased array antenna based on microwave photonic. The apparatus consists of a signal generation unit, a splitter, a beaming unit, a transmitting antenna, a receiving antenna, a microwave photonic channel construction array, a control unit, a combiner array, and a signal receiving unit. The receiving antennas are divided into several receiving subarrays, and the microwave photonic channel construction unit corresponds to each receiving subarray, respectively. For each receiving subarray, a reference channel is constructed by adjusting the array of amplitude adjustment unit, the array of time delay adjustment unit, and the array of phase adjustment unit in the microwave photonic channel construction array. Thus, the reference channel has the matched delay, equal amplitude response, and opposite phase response relative to the leakage interference channel, based on which the leakage interference of phased array antenna is cancelled.
H01Q 3/26 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture
H01Q 1/52 - Means for reducing coupling between antennas Means for reducing coupling between an antenna and another structure
H01Q 3/28 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the amplitude
H01Q 3/36 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elementsArrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the distribution of energy across a radiating aperture varying the phase by electrical means with variable phase-shifters
H04B 1/10 - Means associated with receiver for limiting or suppressing noise or interference
A gear transmission and rotation amplification type device for reducing sloshing is arranged inside and located above a body of an LNG storage tank. The device includes a combination disc, a wheel set, an outer sleeve, an overhanging fan blade, ball screws, springs and a sloshing plate. The combination disc is connected with the sloshing plate below through the springs. The combination disc is fixed above an inner wall surface of the body of the LNG storage tank, while the sloshing plate is fitted but not fixedly connected with the inner wall surface of the body of the LNG storage tank. The wheel set, the outer sleeve, the overhanging fan blade and the ball screws are arranged between the combination disc and the sloshing plate and located below the liquid level in the LNG storage tank.
A method for measuring coating thickness, roughness and interface stiffness by using an ultrasonic phase derivative spectrum, the method belonging to the technical field of ultrasonic non-destructive testing. In the method, an ultrasonic testing system comprising a coating sample, an ultrasonic flat probe, an ultrasonic flaw detector, an XYZ three-dimensional stepping apparatus and a computer is used. In the method, a phase screen approximation spring model of ultrasonic waves acting on a rough and weakly bonded interface is provided, an ultrasonic phase derivative spectrum of ultrasonic waves being vertically incident on a three-medium two-interface structure consisting of a coupling medium, a coating and a substrate is derived, high-sensitivity ranges of the ultrasonic phase derivative spectrum in respect of coating thickness, roughness and interface stiffness are identified by means of sensitivity analysis, and deviations introduced by initial phases of reference signals and detection signals are eliminated by means of cross-correlation analysis, thereby implementing simultaneous quantitative characterization of coating thickness, roughness and interface stiffness. The method overcomes the dependence of conventional ultrasonic amplitude spectrums or phase spectrums on high-quality reference signals, and solves the problem of it being difficult to use existing non-destructive testing methods to simultaneously measure roughness and interface stiffness.
The method for measuring thickness, roughness and interface stiffness of coating layer by using ultrasonic phase derivative spectrum which relates to technical field of the ultrasonic non-destructive testing. The method adopts an ultrasonic detection system which includes a sample of the coating layer, an ultrasonic flat probe, an ultrasonic flaw detector, a XYZ three-dimensional stepping device and a computer. The method derives UPDS (Ultrasonic phase derivative spectrum) when the ultrasonic wave is vertically incident on structure with three-medium and two-interface including coupled medium/coating layer/substrate, to conduct sensitivity analysis to identify the high sensitivity range of ultrasonic phase derivative spectrum to thickness, roughness and interface stiffness of coating layer, and to conduct correlation analysis to eliminate deviation introduced by initial phase of the reference signal and the detection signal, so as to achieve simultaneous quantitative characterization of thickness, roughness as well as interface stiffness of coating layer.
G01N 29/46 - Processing the detected response signal by spectral analysis, e.g. Fourier analysis
G01B 17/02 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring thickness
G01B 17/08 - Measuring arrangements characterised by the use of infrasonic, sonic, or ultrasonic vibrations for measuring roughness or irregularity of surfaces
G01N 29/28 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object Details providing acoustic coupling
7.
ALL-ROUND OBSERVATION UNDER-ACTUATED CAPSULE ROBOT AND AXIS ROLLING-OVER LOCOMOTION METHOD THEREOF BY MAGNETIC FIELD CONTROL
The present invention discloses an all-round observation under-actuated capsule robot and an axis rolling-over locomotion method thereof by magnetic field control. A radially magnetized NdFeB magnet ring is loaded into an inner cavity of a capsule sphere in a non-connected way, and the NdFeB magnet ring independently idles with the rotating magnetic field around a capsule axis and is completely suspended in the inner cavity filled with silicone oil in the capsule sphere. Under the drive of a coaxial following magnetic moment, the under-actuated capsule sphere cannot rotate around the capsule axis, but the capsule axis can roll synchronously with the rotation axis of the magnetic field. The present invention increases the scanning range of the capsule, enhances environmental adaptability, and has high accuracy of fixed point posture adjustment of the capsule, rolling locomotion stability, good visual observation effect and good application prospect.
A61B 1/273 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the upper alimentary canal, e.g. oesophagoscopes, gastroscopes
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/04 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor combined with photographic or television appliances
8.
HEAT EXCHANGER BASED ON GYROID/DIAMOND HYBRID MINIMAL SURFACE-BASED DISTURBANCE STRUCTURE
The present disclosure belongs to the technical field of heat exchangers, and provides a heat exchanger based on a Gyroid/Diamond (GD-type) hybrid minimal surface-based disturbance structure. The heat exchanger includes a core, headers, and flanges. The core includes a cold fluid channel and a hot fluid channel, the cold fluid channel and the hot fluid channel are separated by a parting sheet. An inlet and an outlet of the cold fluid channel are separated from an inlet and an outlet of the hot fluid channel by sealing bars. A GD-type hybrid minimal surface-based disturbance structure is inserted into the hot fluid channel. A cold fluid and a hot fluid are distributed in a cross-flow manner.
The present invention belongs to the field of polymer phase-change energy storage materials. Disclosed are a high-enthalpy-value polyether-amine-based flexible shape-stabilized phase-change material, and a preparation method therefor and the use thereof. The phase-change heat storage material is made of a flexible polyether amine polymer network and an organic solid-liquid phase-change component loaded in the polymer network in situ, wherein the flexible polyether amine polymer network and the organic phase-change component have good compatibility, and organic phase-change molecules are wound around a polyether amine polymer chain to form a crystal domain having overall flexibility, thereby achieving an organic combination of a high heat storage capacity and flexibility. The problems of a low loading rate of the phase-change component and liquid leakage of the phase-change material are solved; moreover, the material is endowed with overall flexibility. The design and development of the high-enthalpy-value flexible shape-stabilized phase-change material have an important application value on the occasions of flexible wearables, heat management of electronic devices, etc.
C09K 5/06 - Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice-versa
C08G 59/00 - Polycondensates containing more than one epoxy group per moleculeMacromolecules obtained by reaction of epoxy polycondensates with monofunctional low-molecular-weight compoundsMacromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
10.
FINE STRUCTURE MANUFACTURING METHOD BASED ON MASK PROTECTION AND NON-CONTACT POLISHING PROCESS
A fine structure manufacturing method based on mask protection and a non-contact polishing process. The method comprises the following steps: pretreatment; photoresist applying; exposure; development; non-contact polishing; and photoresist removal detection. In a fine structure machining procedure, a region of a substrate (1) that is not covered by a photoresist (2) is polished to realize material removal, and with regard to a region that is protected by the photoresist (2), that is, a mask protected region, material removal is not realized on the substrate (1), and only the photoresist (2) is removed. Since a material removal rate of the photoresist (2) is less than a material removal rate of the substrate (1), a height difference is generated between the mask protected region and the unprotected region, that is, a fine structure that needs to be manufactured is obtained.
B24B 1/00 - Processes of grinding or polishingUse of auxiliary equipment in connection with such processes
G03F 7/00 - Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfacesMaterials therefor, e.g. comprising photoresistsApparatus specially adapted therefor
B81C 1/00 - Manufacture or treatment of devices or systems in or on a substrate
A method for recognizing a motor imagery electroencephalography (MI-EEG) signal based on a capsule network (CapsNet) is provided, and relates to the technical field of deep learning and brain-computer interfaces (BCIs). An electroencephalography (EEG) time series is mapped into a three-dimensional (3D) array form based on a spatial electrode distribution. By combining 3D convolution, a CapsNet constructs a three-dimensional capsule network (3D-CapsNet) for recognizing an MI-EEG signal. A 3D convolution module performs feature extraction from both a temporal dimension and an inter-channel spatial dimension through a plurality of layers of 3D convolution to obtain a low-level feature. The low-level feature output by the 3D convolution module is integrated through the CapsNet to obtain a high-level spatial vector containing an inter-feature relationship. A primary capsule and a motor capsule are connected through dynamic routing, and finally a CapsNet module outputs a classification result through a nonlinear activation function squash.
The present invention belongs to the field of aviation compressor control, and relates to an aviation compressor active stabilization control method based on disturbance observation and compensation. Modeling errors and external disturbances of models used in design of a controller are observed, and sub-controllers are individually designed for state variables of interest to compensate for the disturbances, thus to simultaneously solve the problems of rotating stall and surge of an aviation compressor in a variety of complex situations. Partial differential model of the compressor is converted to an ordinary differential equation by Galerkin projection method, partial differential characteristics of the compressor are reserved in the form of disturbances during conversion, and an active stabilization controller of the aviation compressor is designed in combination with disturbance observation and compensation technology, thus to ensure that the models used in the design of the controller have higher accuracy, high robustness and high reliability.
Provided in the present application are an image processing method and a related apparatus. The image processing method comprises: acquiring a first image; determining blur information indicating a blur region in the first image; and using a first neural network to perform deblurring processing on the first image on the basis of the first image and the blur information of the first image, so as to obtain a second image. In the method, the first neural network is trained to deblur an image. Specifically, during training, the first neural network is based on an image and blur information for indicating a blur region of the image. Therefore, compared with a neural network obtained by means of training on the basis of only an image, when a first neural network is used for deblurring an image, it is helpful to improve the definition of the deblurred image.
The present invention provides a spatiotemporal dynamic system soft sensing method for automatically determining a partial differential equation (PDE) structure and belongs to the technical field of soft sensing of neural networks. Firstly, a loss function for training a coupled physics-informed neural network with a recurrent prediction mechanism is constructed to obtain a solution and a driving source which satisfy a PDE used for describing spatiotemporal industrial processes; secondly, differential operator candidates are obtained by an automatic differentiation method, and an appropriate PDE structure is selected from the differential operator candidates to accurately describe the spatiotemporal industrial processes; and finally, the soft sensing result is verified using heat diffuse phenomena and actual vibration processes. The CPINNRP-AIC is suitable for soft sensing methods of multi-class dynamic systems with spatiotemporal dependence, can achieve the effective acquisition of key variable values for high-end complex equipment such as an aero-engine in operation processes.
The present invention provides a method for impact analysis of port construction on a coastal ecotone based on remote sensing data, which belongs to the technical field of remote sensing application. The method quantifies landscape data and satellite image data, and then converts the data into intuitive images to observe the spatio-temporal change of the coastal ecotone after port construction. The method includes: step 1: obtaining remote sensing image data of a research region; step 2: preprocessing the remote sensing image data to obtain processed images; step 3: establishing an evaluation system of human disturbance indexes; and step 4: generating a spatio-temporal distribution map of regional disturbance indexes. The present invention provides a method capable of quantifying the impact range and the impact degree of the port construction factor on the coastal ecotone, provides an idea for reducing the impact of port construction on a surrounding environment.
The present invention belongs to the field of computational mechanics, and provides an adaptive multi-level phase-field method for brittle fracture of elastic materials under thermal shock, thus to provide a new numerical calculation method for efficient fracture study. In the present invention, damage degree of a material is characterized by a phase field, and the multi-level hp-FEM is used as an adaptive strategy to implement dynamic discretization in a process of crack propagation under thermal shock. Compared with previous adaptive phase-field fracture models, the present invention has no hanging nodes, and has simple numerical implementation and high calculation efficiency, which can effectively predict the fracture behavior of a structure. At the same time, three pre-existing crack treatment techniques are developed to initialize the phase field. The temperature, displacement and phase fields are solved by an alternating minimization algorithm, which can stably and effectively solve the multi-field coupling large-scale fracture problems.
A spatiotemporal dynamic system soft measurement method for automatically determining a partial differential equation structure, belonging to the technical field of the soft measurement of neural networks. The method comprises: first, constructing a loss function used for training a coupled physics-informed neural network having a recurrent prediction mechanism, so as to obtain solutions and source items that meet a partial differential equation used for describing a spatiotemporal industrial process; second, using an automatic differential method to obtain a differential operator candidate library, and selecting an appropriate partial differential equation structure from the differential operator candidate library to accurately describe the spatiotemporal industrial process; and finally, using a heat diffusion phenomenon and an actual vibration process to verify a soft measurement result. The CPINNRP-AIC provided in the present invention is applicable to a soft measurement method for multiple types of dynamic systems having spatiotemporal dependency features, comprising a heat diffusion phenomena in an actual industrial process, a fluctuation phenomena in an actual vibration process, etc. The present invention can realize the effective acquisition of key variable values during the operation of high-end complex equipment, such as an aero-engine, thereby providing assurance for a good control performance and safe operation stability of high-end industrial equipment, and has practical engineering application significance.
The present invention relates to the technical field of satellite network caching. Disclosed is an NDN-based satellite network coding caching method. Aiming at the problem that transmission correlation is generated when content is segmented by traditional NDN caching, that is, a user has to acquire data blocks contextually associated with a request file block to recover source data, the present invention uses a coding operation to remove transmission correlation of data, in order to realize efficient content distribution, uses minimization of backhaul link load and content acquisition time delay as an optimization target for placing satellite node coded packets, uses a multi-population ant colony algorithm to solve an optimization problem and achieves quick retrieval of content, and designs a cooperative issuing mechanism of a cluster, thus allowing the user to reduce satellite link load for content issuing under coverage of a plurality of satellite nodes whilst simplifying satellite network management.
Disclosed in the present invention are a point cloud feature recognition and labeling algorithm based on improved PointNet++. The algorithm comprises a supervoxel growth method suitable for a deep learning network, and a deep learning network suitable for large-component scan data. In the method, PointNet++ is improved, a deep learning network suitable for large-scale point cloud recognition is constructed, and point clouds in regions are processed, the interrelationship between the point clouds in the regions are also taken into consideration, so that the technical problem of conventional PointNet series networks being not capable of processing large-scale point clouds is solved. Provided is a supervoxel growth method which is suitable for determining feature parameters within voxels that are highly distinctive, computationally efficient and highly robust, so as to realize fast, efficient and meaningful voxelized point cloud calibration.
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
20.
A self-learning method of generative adversarial multi-headed attention neural network for aero-engine data reconstruction
A generative adversarial multi-headed attention neural network self-learning method for aero-engine data reconstruction belongs to the field of end-to-end self-learning of aero-engine missing data. First, the samples are pre-processed, and the machine learning algorithm is used to pre-fill the normalized data first, and the pre-filled information is involved in the network training as part of the training information. Second, a generative adversarial multi-headed attention network model is constructed and the trained sample set is used to train the generative adversarial multi-headed attention network model. Finally, the samples are generated using the trained sample generator G. The method uses the generative adversarial network to better learn the distribution information of the data, and uses parallel convolution and multi-headed attention mechanism to fully exploit the spatial and temporal information among the aero-engine data.
The present disclosure relates to the field of CO2 geological sequestration, and provides a whole-process multi-parameter monitoring device and method for simulating CO2 geological sequestration and use thereof. A large-scale reactor body is developed, and a geological reservoir at a depth of 800 to 3000 meters is simulated. A modular built-in model device is researched and developed, a multi-type and variable-structure reservoir remodeling technology is developed, and mutual coupling of modules can be achieved. The design idea of separating the pressure reactor from the built-in sample model is adopted in the device. The confining pressure, the pore pressure, the temperature gradient, and the axial load of the device can be independently controlled through a temperature control mechanism and a loading mechanism respectively, so that the restoration of the state of in-situ stresses in the reservoir is realized.
E21B 49/00 - Testing the nature of borehole wallsFormation testingMethods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
E21B 43/16 - Enhanced recovery methods for obtaining hydrocarbons
A coupled physics-informed neural network for solving displacement distribution of a bounded vibration string under an unknown external driving force is provided. A novel PINN is proposed, called C-PINN, used for solving the displacement distribution of the bounded vibration string under an external driving force with little or even no priori information. It comprises two neural networks: NetU and NetG. NetU is used for approximating satisfying the displacement distribution of the bounded vibration string under study. NetG is used for regularizing u in the NetU to satisfy the displacement distribution of the approximation of NetU. The two networks are integrated into a data-physics-hybrid loss function. In addition, a proposed hierarchical training strategy is used for optimizing the loss function and realizing the coupling of the two networks. Finally, the performance of the C-PINN in solving the displacement distribution of the bounded vibration string under the external driving force is verified.
The present invention discloses a satellite network code caching method based on Named Data Networking (NDN) and relates to the technical field of satellite network caching. Aiming at the transmission dependency generated by segmenting a content by conventional NDN caching, i.e., the problem that a user has to acquire a data block that requests a file block to be associated up and down to recover source data. The method removes the transmission dependency of data by adopting an encoding operation. To achieve efficient content distribution, the method places satellite node encoding packets by taking a minimized backhaul link load and a minimized content acquisition time delay as optimization objectives. An optimization problem is solved through a multi-population ant colony algorithm, and meanwhile, the content is retrieved rapidly.
H04W 40/24 - Connectivity information management, e.g. connectivity discovery or connectivity update
G06N 3/006 - Artificial life, i.e. computing arrangements simulating life based on simulated virtual individual or collective life forms, e.g. social simulations or particle swarm optimisation [PSO]
A high-sensitivity two-dimensional electron gas channel structure magnetic sensing matrix chip includes a magnetic sensing matrix, a shift register, and a back-end interface circuit. The magnetic sensing matrix includes several matrix units including substrate, buffer layer, channel layer, and barrier layer. A two-dimensional electron gas channel material heterojunction structure includes buffer layer, channel layer, and barrier layer on the substrate, and the horizontal Hall element and switching device are above the channel layer. The beneficial effects include a high sensitivity magnetic sensing matrix chip with two-dimensional electronic gas channel structure can be used for real-time, static and dynamic measurement of multi-dimensional magnetic field distribution under high temperature, high pressure, high radiation and other harsh environments to carry out structural and circuit innovation and production.
A fluid polishing device for the inner surface of an elongated tube, comprising a working platform (13), fluid processing units, and a magnetically controlled fluid unit. Two fluid processing units are provided, and are symmetrically mounted on the left side and the right side of the working platform (13); the left end and the right end of a workpiece (7) are respectively connected to the fluid processing units on the left side and the right side; the magnetically controlled fluid unit is located below the workpiece (7), and magnetic particles in a polishing solution in the fluid processing units are controlled by means of a magnetic field applied by a magnetic pole (11), so that the magnetic particles form, in a magnetic direction, a flux linkage having a certain yield strength, and are attracted on the inner surface of the workpiece (7) to form a local blocking block, thereby reducing the actual circulation diameter of the polishing solution in a blocked region, thus increasing the flow rate of the polishing solution, and improving the polishing strength. Also provided is a method using the polishing device. The polishing device and method can selectively polish regions of elongated tubes having an extremely fine diameter and an extremely large length-to-diameter ratio.
A multi-scale hybrid attention mechanism modeling method for aero-engine remaining useful life prediction belongs to the field of health management and prediction technology for aero-engines. Firstly, preprocess the data to obtain the sample, set the RUL label, and obtain the true value of the remaining useful life of the sample. Secondly, a multi-scale hybrid attention mechanism model consisting of position encoding layer, feature extraction layer, and regression prediction layer is constructed. Thirdly, train the model, and make the difference between the predicted value output by the model and the true value of the remaining useful life by minimizing the loss function until it reaches the stop standard. Finally, use the trained model to predict the remaining useful life. The method can achieve full fusion of information from different time steps of a single sample, taking into account the correlation between all samples.
B64D 45/00 - Aircraft indicators or protectors not otherwise provided for
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
G06F 119/04 - Ageing analysis or optimisation against ageing
27.
METHOD OF DUST POLLUTION MONITORING AND RISK FOREWARNING FOR DRY BULK PORT BASED ON INSPECTION ROBOT
A method of dust pollution monitoring and risk forewarning for a dry bulk port based on an inspection robot belongs to the technical field of environmental monitoring. The method plans an inspection route of the inspection robot in the stage of the inspection robot path planning, and makes the inspection robot perform an inspection task automatically along the planned route; in the stage of data acquisition, transmission, and processing, a multi-source environmental monitoring module installed on the inspection robot is used for monitoring the concentration of dust pollutants in the air and environmental parameters in real-time; and in the stage of data analysis and risk forewarning, the monitoring data is analyzed and visualized to judge a possible over-standard risk of dust pollutant concentration and perform forewarning. The present invention can improve the resolution and flexibility of dust pollution monitoring in the dry bulk port.
Provided in the present invention is a testing apparatus for long-term loading and synchronized measurement of concrete-filled steel tube-stiffened composite structures, the testing apparatus comprising a loading assembly, a load-measuring assembly, a deformation-measuring assembly, and a concrete-filled steel tube-stiffened composite structure. The loading assembly primarily consists of loading plates, loading rods, nuts, and pre-tightened disc springs; the load-measuring assembly consists of force sensors; the deformation-measuring assembly primarily consists of a measuring apparatus; and the concrete-filled steel tube-stiffened composite structure is a force-bearing structure. The testing apparatus for long-term loading and synchronized measurement of concrete-filled steel tube-stiffened composite structures allows for loading in stages and is capable of synchronously measuring the long-term internal forces and deformation of inner concrete-filled steel tubes and outer sleeving reinforced concrete; solves the key problem that during construction in stages, the internal forces and the deformation of the inner concrete-filled steel tube part and the outer sleeving reinforced concrete part cannot be precisely analyzed; and provides reliable test results for further research on the internal force redistribution patterns and the deformation progress patterns of the described structures under long-term load.
The present invention belongs to the field of new-energy power prediction of electric power systems. Disclosed is a short-term wind-photovoltaic power prediction method based on high-dimensional multivariate meteorological data fusion. In the present invention, an acquired meteorological data set ERA5 is fully utilized, a massive number of meteorological factors are greatly expanded in terms of physical causality, spatial scales, and temporal scales, and characteristic relationships between the meteorological factors and new-energy power are fully explored, thereby improving the prediction accuracy. Power-related meteorological factors are greatly expanded by using a physical causality method and a spatial longitude and latitude envelope method, so as to form a high-dimensional multivariate meteorological factor set. Dimensionality reduction is performed on ultra-high-dimensional meteorological data for comprehensive correlation analysis and fusion to prevent correlations and information overlaps between multi-dimensional meteorological data from affecting a power prediction model; and then, a sliding time window method is used to form a power prediction sample set. The prediction model is fitted according to meteorological data and actual power station operation data, and is applied to actual engineering projects in Dali, Yunnan for verification. The prediction accuracy of the present invention far exceeds that of conventional prediction methods, thus showing relatively strong robustness and universality.
G06Q 10/04 - Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
30.
APPARATUS AND METHOD FOR DYNAMIC TRACKING-BASED REFERENCE CONTINUOUS HEAT MEASUREMENT AT MICROSCALE
An apparatus and method for dynamic tracking-based reference continuous heat measurement at a microscale. The apparatus comprises: a material feeding and discharging system, wherein the material feeding and discharging system is connected to a microscale continuous reaction system, and the material feeding and discharging system is controlled by a central control and data acquisition system and injects a material into the microscale continuous reaction system; the microscale continuous reaction system, wherein a micro-channel reaction chip B (22) in the microscale continuous reaction system is used for causing material reaction, and a micro-channel reference chip A (21) in the microscale continuous reaction system is used for simulating a heat absorption/release process of the reaction in the micro-channel reaction chip B (22) and indirectly obtaining heat absorbed/released in the micro-channel reaction chip B (22); and the central control and data acquisition system, wherein the central control and data acquisition system acquires the heat absorbed/released and calculates reaction heat on the basis of the heat absorbed/released. According to the method, the whole heat measurement process is simple and rapid to operate, and the accuracy of heat measurement can be ensured without repeated correction.
G01N 25/48 - Investigating or analysing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on solution, sorption, or a chemical reaction not involving combustion or catalytic oxidation
31.
PREPARATION METHOD FOR CONDUCTIVE CARBON NANOTUBE-POLYVINYLIDENE FLUORIDE COMPOSITE HOLLOW FIBER MEMBRANE AND ELECTROCHEMICAL COUPLING MEMBRANE SEPARATION ASSEMBLY
A preparation method for a conductive carbon nanotube-polyvinylidene fluoride composite hollow fiber membrane, which preparation method comprises the following steps: (1) formulation of a spinning solution, which involves: adding carboxylated carbon nanotubes and a dispersing agent to a solvent, stirring the mixture at 40-80ºC to uniformly disperse the carbon nanotubes, then adding polyvinylidene fluoride, and then continuously stirring same to completely dissolve polyvinylidene fluoride, so as to obtain a spinning solution; and (2) preparing a carbon nanotube-polyvinylidene fluoride composite hollow fiber membrane by means of wet spinning, wherein the hollow fiber membrane is subjected to conductive encapsulation and connection to construct an electrochemical coupling membrane separation assembly that can achieve the combination of an electrochemical effect and a membrane separation function, thereby improving the anti-pollution capacity of a separation membrane.
A long-term scheduling method for an industrial byproduct gas system comprises the following steps: dividing information granularity according to the fluctuation features of energy data to form semantic representation of a data sample; with granular data features as input, constructing a deep contrastive network structure through expert scheduling experience data, and constructing knowledge representation under different scheduling states in modes of qualitative and quantitative learning; establishing a fully connected output layer to fit expert scheduling amount, to obtain an initial scheduling policy based on experience knowledge; constructing an actor-critic architecture to calculate a compensation policy that considers long-term scheduling performance.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
The present invention provides a carbon dioxide ocean liquid balloon storage method. The method comprises: suspending an uncharged liquid balloon device in seawater at a depth of not less than 600 m in advance; conveying liquid carbon dioxide to an inside of the liquid balloon device through a conveying pipe; when the liquid carbon dioxide charging volume reaches the rated charging volume of a carbon dioxide submarine storage device, stopping charging; closing a stop valve of a liquid balloon inlet pipe and disconnecting the carbon dioxide conveying pipe from the liquid balloon inlet pipe; and controlling the liquid balloon device to enable the liquid balloon device to be placed in a seabed at the appropriate depth, with the depth of the seabed of not less than 3,000 m. The whole liquid balloon device is of a frame liquid balloon structure, and comprises a frame structure and a liquid balloon structure.
NingBo Inst. of Dalian University of Technology (China)
Inventor
Kang, Huijun
Chen, Rongchun
Wang, Tongmin
Guo, Enyu
Chen, Zongning
Li, Tingju
Cao, Zhiqiang
Lu, Yiping
Jie, Jinchuan
Zhang, Yubo
Abstract
Provided are a P-type ZrCoSb-based half-Heusler single crystal alloy and a preparation method thereof. The method for preparing the P-type ZrCoSb-based half-Heusler single crystal alloy includes: subjecting alloy raw materials to smelting under a first protective atmosphere to obtain a half-Heusler polycrystalline alloy ingot, the alloy raw materials corresponding to a chemical composition of the P-type ZrCoSb-based half-Heusler single crystal alloy; and subjecting the half-Heusler polycrystalline alloy ingot to vertical Bridgman directional crystallization under a second protective atmosphere to obtain the P-type ZrCoSb-based half-Heusler single crystal alloy. The P-type ZrCoSb-based half-Heusler single crystal alloy has the chemical composition of ZrCoSb1-xSnx, x in the ZrCoSb1-xSnx being in a range of 0.1≤x≤0.3; and the P-type ZrCoSb-based half-Heusler single crystal alloy has an MgAgAs-type crystal structure.
ii(t) by using the optimal candidate; determining whether to iterate to a maximum number of iterations; and obtaining an optimal parameter combination of the prediction model and training the prediction model, and obtaining a prediction model that has converged after optimization, so as to identify an anomaly caused by a cyberattack. According to the method in the present invention, an anomaly caused by a cyberattack can be identified.
A method, system and device for allocating total emission reduction of a water environmental pollution load are provided. The method includes: dividing a watershed based on terrain elevation information in watershed-related data to generate a plurality of watershed control units; with a watershed control unit as a basic unit, estimating a pollution load output in each watershed control unit by using an output coefficient method; acquiring GDP of each watershed control unit, and combined with the pollution load output, calculating relative environmental efficiency of each watershed control unit by using a data envelopment method; quantifying a contribution rate of a pollution load produced by each watershed control unit to a pollution load of a section of river entering the sea one by one based on a constructed watershed water environmental model; and formulating a pollutant emission reduction scheme according to the relative environmental efficiency and the contribution rate.
A network attack prediction method, device, computer equipment and storage medium are provided. The network attack prediction method includes: performing preprocessing, time series modeling and data feature analysis on the network traffic data set; dividing the network traffic data set into a normal traffic data set and an attack traffic data set; initializing parameters of the improved grey wolf algorithm; constructing a prediction model and initializing parameters of the prediction model; using the grey wolf optimizer GWO search strategy to obtain a first candidate of the optimal grey wolf; using the hunting DLH search strategy to obtain another candidate of the optimal grey wolf, selecting an optimal candidate; updating Xi(t) with the optimal candidate; judging whether to iterate to the maximum iterations; obtaining an optimal parameter combination of the prediction model and training the prediction model; obtaining an optimized convergent prediction model and identifying anomalies caused by network attacks.
A novel three-dimensional ultrasonic elliptical vibration cutting device, comprising has a two-dimensional ultrasonic vibration transducer, an asymmetric ultrasonic horn, and a cutter. The cutter is installed at the output end of the asymmetric ultrasonic horn, the two-dimensional ultrasonic vibration transducer is used for outputting ultrasonic longitudinal-flexural complex vibration, the asymmetric ultrasonic horn is used for converting and decomposing longitudinal vibration output by the two-dimensional ultrasonic vibration transducer into second-phase flexural vibration and longitudinal vibration, and outputting a three-dimensional ultrasonic elliptical vibration trajectory on the cutter in combination with first-phase flexural vibration output by the two-dimensional ultrasonic vibration transducer. A three-dimensional ultrasonic elliptical vibration trajectory is output in a double-excitation mode. The output three-dimensional ultrasonic elliptical vibration trajectory is adjusted according to different cutting applications and machining requirements so that the device has better adaptability.
B26D 7/08 - Means for treating work or cutting member to facilitate cutting
B06B 1/06 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
39.
CLOSTRIDIUM-DERIVED QUORUM SENSING PEPTIDE, PREPARATION METHOD AND USE
DALIAN UNIVERSITY OF TECHNOLOGY NINGBO RESEARCH INSTITUTE (China)
Inventor
Xue, Chuang
Ren, Shijie
Abstract
Provided are a Clostridium-derived quorum sensing peptide, a preparation method and the use, belonging to the field of biotechnology and medicines. A quorum sensing peptide (QSP) derived from Clostridium tyrobutyricum is successfully identified by means of combination of LC-MS/MS and genetics. The quorum sensing peptide is a linear peptide encoded by 12 amino acids, the amino acid sequence thereof being Gly-Ile-Val-Leu-Val-Pro-Thr-Ser-Leu-Val-Ser-Gly, and is named GIVL. In addition, Clostridium tyrobutyricum is an important industrial microorganism and novel probiotics, so that the obtained quorum sensing peptide is natural, safe and efficient. The result represents that the GIVL has α-glucosidase inhibition and hypoglycemic activities, has a simple structure, facilitates artificial synthesis, and has a good application prospect as a novel, promising and high-safety candidate drug for diabetes.
The preparation and use of N-substituted phenyl-2-pyridone and an endoperoxide, wherein the endoperoxide can be converted into N-substituted phenyl-2-pyridone and simultaneously release singlet oxygen and triplet oxygen. The N-substituted phenyl-2-pyridone and the endoperoxide have a great effect of resisting several types of fibrosis and can significantly inhibit inflammatory factors, and can not only inhibit the proliferation and migration of cancer cells at the cellular level, but can also inhibit the growth of various tumors at the living-body level.
A61P 11/00 - Drugs for disorders of the respiratory system
A61P 13/12 - Drugs for disorders of the urinary system of the kidneys
A61P 1/16 - Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
A61P 29/00 - Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agentsNon-steroidal antiinflammatory drugs [NSAID]
A61K 31/539 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and at least one oxygen as the ring hetero atoms, e.g. 1,2-oxazines having two or more oxygen atoms in the same ring, e.g dioxazines
A61K 31/4412 - Non-condensed pyridinesHydrogenated derivatives thereof having oxo groups directly attached to the heterocyclic ring
A61P 9/00 - Drugs for disorders of the cardiovascular system
A wireless charging heating system, a wireless charging system, a wireless charging heating method and a wireless charging method are provided. The wireless charging heating system includes a lithium-ion battery stack; a battery stack power frequency converter connected with the lithium-ion battery stack and configured to convert direct current output from the lithium-ion battery stack into high-frequency alternating current; a heating system switch connected with the battery stack power frequency converter and configured to control on or off of the high-frequency alternating current; a heating coil connected with the heating system switch and configured to heat the lithium-ion battery stack; and a single chip microcomputer connected with the lithium-ion battery stack, the battery stack power frequency converter and the heating system switch and configured to monitor temperature of the lithium-ion battery stack and control an operating state of the battery stack power frequency converter and the heating system switch.
B60L 53/39 - Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer with position-responsive activation of primary coils
B60L 53/122 - Circuits or methods for driving the primary coil, i.e. supplying electric power to the coil
B60L 53/36 - Means for automatic or assisted adjustment of the relative position of charging devices and vehicles by positioning the vehicle
B60L 53/62 - Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
42.
METHOD FOR PREPARING DOUBLE-CROSSLINKING ANTIBACTERIAL HYDROGEL DRESSING WITH CONTROLLABLE RELEASE OF GALLIUM IONS
The present invention belongs to the technical field of medical biomaterial preparation. Disclosed is a method for preparing a double-crosslinking antibacterial hydrogel dressing with controllable release of gallium ions. The double-crosslinking antibacterial hydrogel dressing is prepared by means of using N-isopropylacrylamide, chitosan, polyethylene glycol diacrylate, an initiator and an accelerator as raw materials, and sequentially performing processes such as stirring, polymerization, freeze drying, and loading. The hydrogel dressing obtained in the present invention can sensitively realize high-temperature rapid controlled release and low-temperature slow controlled release of gallium ions and has a significant antibacterial performance. The hydrogel dressing has mechanical flexibility similar to that of the skin, and can fit well to wounds covering large joints such as the knees and ankles. In addition, the hydrogel dressing has good water absorption and swelling properties, which helps to absorb tissue fluid exuding from the surface of a wound. The preparation method of the present invention is simple, has mild process conditions, and has prominent application prospects regarding wound infection healing.
The present application provides a thin-walled shell model updating method and system. The method includes converting an influence of fine feature structures in a space shell structure on stiffness and mass equivalently onto a skin and a stiffener, so as to simulate the influence of the fine feature structures on a bearing capacity of a whole structure.
34344 nanoparticles used as a photosensitizer show good photocatalytic activity, can induce the dehydrogenation oxidation of the hydrazine compound in a water phase, and can be repeatedly recycled, thereby providing a green and sustainable approach for the photocatalytic reaction in the water phase.
C07C 245/08 - Azo compounds, i.e. compounds having the free valencies of —N=N— groups attached to different atoms, e.g. diazohydroxides with nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings with the two nitrogen atoms of azo groups bound to carbon atoms of six-membered aromatic rings, e.g. azobenzene
B01J 31/06 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
The present invention belongs to the technical field of metal forming manufacturing and discloses an integral forming method for a large-size thin-walled ring shell. The integral ring shell obtained by the forming method of the present invention has only one circumferential weld seam and one radial weld seam. If the two weld seams are located in an excisable process segment region, the target part without weld seams can be obtained after the process segment is cut off. The forming method of the present invention adopts a local thermal expansion forming method, plastic deformation occurs only in mold-constrained high temperature regions in a single local forming process, and a part with each region meeting the requirements can be obtained after several local thermal expansion forming processes. The forming method of the present invention can obtain two open cross-sectional ring shell components or multiple segmented ring shell components at one time.
The present invention belongs to the technical field of medicine. Provided are a porphin-BSH conjugate in boron neutron capture therapy and the use thereof. The porphin-BSH conjugate of the present invention is synthesized by means of conjugating an amino-substituted maleimide compound, and the method therefor is simple. The porphin compound has the characteristics of targeting tumor cells, better uptake of tumor cells, being safe and having low toxicity, and having the fluorescence phenomenon of a photosensitizer; can realize the targeted delivery of a second-generation boron carrier, i.e. sodium mercaptoundecahydrododecaborate (BSH), to tumor cells; and can increase the content of 10B atoms in cells to different degrees compared with BSH. Moreover, the in-vivo distribution of the conjugate is monitored in real time by means of the fluorescence characteristics of porphin, so as to formulate optimal neutron irradiation conditions. The conjugate is not only safe and has low toxicity, but also increases the content of 10B in cells to a great extent. Furthermore, the conjugate achieves good results during the BNCT in-vitro activity test, and therefore the conjugate can be studied as a future potential boron carrier for BNCT.
NATIONAL ASTRONOMICAL OBSERVATORIES, CHINESE ACADEMY OF SCIENCE (China)
Inventor
Fu, Xing
Sun, Siyuan
Li, Qingwei
Li, Hui
Li, Hongnan
Abstract
The present invention discloses a cable force identification algorithm considering semi-rigid constraints on both ends. The present invention only needs the basic parameters such as length and mass per unit length of a cable and then adopts a modal identification algorithm such as stochastic subspace method and frequency domain decomposition method to process signals collected by the acceleration sensor, and thus obtains the corresponding first natural frequency and mode shapes, and the cable force can be solved without obtaining any other data in advance. The present invention simplifies the cable to an equivalent single-degree-of-freedom system, modifies the first natural frequency of the cable through the mode shape of modal identification, avoids the cable force identification error caused by the change of the boundary mechanical characteristics of the cable, improves the efficiency and accuracy of cable force monitoring, has good application prospect in real-time monitoring of cable force of cable-stayed structure.
G01L 5/04 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
G01L 1/10 - Measuring force or stress, in general by measuring variations of frequency of stressed vibrating elements, e.g. of stressed strings
The present invention belongs to the technical field of computer vision, and proposes a lightweight real-time emotion analysis method incorporating eye tracking. In the method, gray frames and event frames that have synchronized time are acquired through event-based cameras and respectively input to a frame branch and an event branch; the frame branch extracts spatial features by convolution operations, and the event branch extracts temporal features through conv-SNN blocks; the frame branch has a guide attention mechanism for the event branch; and the spatial features and the temporal features are integrated by fully connected layers, The final output is the average of the n fully connected layer outputs, which represents the final expression. The method can recognize the emotional expression of any stage in various complex light changing scenarios; and in the case of limited accuracy loss, the emotion recognition time is shortened to achieve “real-time” user emotion analysis.
G06T 7/70 - Determining position or orientation of objects or cameras
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/77 - Processing image or video features in feature spacesArrangements for image or video recognition or understanding using pattern recognition or machine learning using data integration or data reduction, e.g. principal component analysis [PCA] or independent component analysis [ICA] or self-organising maps [SOM]Blind source separation
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 40/18 - Eye characteristics, e.g. of the iris
49.
ENGINEERING STRAIN PRODUCING CORDYCEPIN AND ITS DERIVATIVE 3'-DEOXYINOSINE, ITS PREPARATION METHOD AND APPLICATION
The present invention relates to the field of genetic engineering and process engineering, and discloses an engineering strain producing cordycepin and its derivative 3′-deoxyinosine, its preparation method and application. The method includes: codon optimizing genes Cm1 and Cm2; gene amplification and fragment recovering; methanol-induced promoter and terminator fragments; and inserting the genes into an expression vector and then transferring to Pichia pastoris for screening to obtain the engineering strain of Pichia pastoris of the present invention. The engineering strain can be applied to production of cordycepin and its derivative. The engineering strain prepared by the preparation method of the present invention has great advantages in producing cordycepin and its derivative. Due to the use of unique strains of Cordyceps militaris which have unique Cm1 and Cm2 genes, the efficiency of cordycepin production is greatly improved, and subsequently the green process of producing cordycepin and its derivative 3′-deoxyinosine with carbon dioxide can be realized.
C12P 19/40 - Nucleosides having a condensed ring system containing a six-membered ring having two nitrogen atoms in the same ring, e.g. purine nucleosides
C12N 9/16 - Hydrolases (3.) acting on ester bonds (3.1)
C12N 15/81 - Vectors or expression systems specially adapted for eukaryotic hosts for fungi for yeasts
50.
SILICON DIOXIDE VACCINE DELIVERY SYSTEM TAKING VIRUS-LIKE PARTICLES AS TEMPLATE, AND CONSTRUCTION METHOD AND APPLICATION OF SILICON DIOXIDE VACCINE DELIVERY SYSTEM
A silicon dioxide vaccine delivery system uses virus-like particles as templates. The particle morphology of the silicon dioxide vaccine system is 50-500 nm of nanoparticles, of which an antigenic component is 20-200 nm of virus-like particles, an adjuvant component is nano silicon dioxide, the silicon dioxide component is wrapped on the surface of the virus-like particle, and a mass ratio of silicon element to antigen is 50-0.5:1. The construction of the silicon dioxide vaccine delivery system includes steps of: (1) adding a proper amount of 3-aminopropyltriethoxysilane into an aqueous solution containing virus-like particles and stirring; (2) adding a proper amount of tetraethoxysilane into the dispersion system in step (1) and stirring; and (3) centrifuging a reactant obtained in step (2) and removing a supernatant to obtain a product. A vaccine constructed by means of the vaccine system can trigger a host to generate humoral and cellular immune levels.
SHENZHEN MUNICIPAL DESIGN & RESEARCH INSTITUTE CO., LTD (China)
CHINA RAILWAY 20TH BUREAU GROUP CO., LTD (China)
FUJIAN RAILWAY CONSTRUCTION CO., LTD OF CHINA RAILWAY 24TH BUREAU GROUP (China)
Inventor
Wang, Zhengzheng
Yu, Shiwei
Chen, Ximao
Xie, Xiong
Xie, Xin
Qin, Hui
Abstract
A tunnel groundwater limited discharge system based on intelligent regulation of distributed lining water pressure, comprising a lining structure, a partition drainage system, and a partition intelligent monitoring and control system. The partition intelligent monitoring and control system comprises a pressure data acquisition module, a microprocessor, and a control module. The pressure data acquisition module comprises an intelligent water pressure monitor (9) and an intelligent pressure measuring instrument (12). The microprocessor is configured to receive data information of the pressure data acquisition module, obtain groundwater discharge time according to data information of a corresponding area, and send a switch instruction to the control module. The control module is mounted on the partition drainage system. The system performs partition early warning monitoring and partition limited discharge on a tunnel, while monitoring the internal load of a lining. Contact monitoring and pressure relief of the internal and external loads of the lining are achieved, so that the stress of the lining structure is optimal, and the local ecological environment is protected.
CHINA RAILWAY 24TH BUREAU GROUP ANHUI ENGINEERING CO., LTD (China)
CHINA RAILWAY 24TH BUREAU GROUP CO., LTD (China)
FUJIAN RAILWAY CONSTRUCTION CO., LTD OF CHINA RAILWAY 24TH BUREAU GROUP (China)
SHENZHEN MUNICIPAL DESIGN & RESEARCH INSTITUTE CO., LTD (China)
Inventor
Wang, Zhengzheng
Yu, Shiwei
Liu, Zongzu
Zhao, Liang
Chen, Ximao
Qin, Hui
Abstract
The present invention belongs to the field of tunnel groundwater, and relates to a tunnel groundwater recycling device based on dynamic regulation and control of ecological water requirements. The device comprises circumferential drain pipes, each of which is located between a primary support and a secondary lining, wherein a plurality of circumferential drain pipes are distributed in a longitudinal direction of a tunnel at certain intervals; adjacent circumferential drain pipes are connected by means of a longitudinal water guide pipe; both sides of the bottom of each circumferential drain pipe are connected to transverse water output pipes; the transverse water output pipes are connected to corresponding water storage and reinjection devices; and electric water valves are provided on the transverse water output pipes and are connected to a terminal controller. By means of the device, groundwater is effectively recycled while both ecological water requirements and tunnel safety are taken into consideration. In the rainy season, discharged water is stored; and when there is a lack of rainfall supply, stored water is reinjected to the ecological environment. The device has high precision in terms of controlling the amount of reinjection, and can protect tunnel safety while further reducing the damage of a tunnel to the ecological environment.
E21F 17/16 - Modification of mine passages or chambers for storage purposes, especially for liquids or gases
B01D 29/05 - Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups Filtering elements therefor with flat filtering elements supported
The present invention belongs to the fields of power markets and hydropower dispatching operations. Disclosed is a supply-and-demand-end market day-ahead spot coordinated clearing method taking into account hydropower consumption. A trans-provincial direct-current link line is taken as a coordination factor, a supply-end market and a demand-end market are decoupled, and an iterative clearing framework is constructed; a direct-current delivery plan is taken into account to determine boundary conditions of power generation capacity, startup and shutdown, ramping, and upstream and downstream influence electric quantity of a supply-end giant hydropower station, nonlinear hydropower characteristics and water abandonment control requirements are coupled to construct a clearing model having the minimum electricity purchase cost, and the day-ahead spot output of a whole supply-end network is optimized; and a direct-current plan update policy is proposed, a delivery boundary is dynamically adjusted according to abandoned water of a power station and section control of a power grid, the delivery boundary is updated to a demand-end market clearing model, and iterative clearing is performed until convergence. By means of the present invention, billion-kilowatt-level high-proportion hydropower market spot clearing can be completed within about ten minutes, such that timeliness requirements of day-ahead market operation are met, a market clearing result and a direct-current transmission plan are effectively linked up, and cascade electric quantity and water volume of a drainage basin are accurately matched.
A method for preparing methylphenol and homologues, comprising: under the conditions of a reaction temperature of 150-350°C and a reaction pressure of 1-50 atm, by means of a carrier gas, introducing a mixed raw material of methanol, ethanol and acetone into a reactor loaded with a catalyst, and producing methylphenol in a coupling-aromatization reaction. The present invention provides a reaction route for directly producing methylphenol and homologues thereof from low-carbon small molecule alcohols and ketones in a coupling-aromatization reaction, the total methylphenol selectivity being as high as 34.0%, wherein the selectivity of 2,3,6-trimethylphenol reaches 7.1%. Byproduct hydrogen in the described reaction route can be used as a chemical raw material. Other byproducts such as high-carbon fatty alcohols and ketones have large differences in melting and boiling points from methylphenol and are easy to separate by distillation. Said byproducts can be used as fuel additives and partially replace petroleum-based products.
C07C 37/20 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
C07C 39/07 - Alkylated phenols containing only methyl groups as alkyl groups, e.g. cresols, xylenols
B01J 27/18 - PhosphorusCompounds thereof containing oxygen with metals
B01J 27/185 - PhosphorusCompounds thereof with iron group metals or platinum group metals
55.
FEDERATED UNLEARNING METHOD BASED ON MALICIOUS TERMINAL INTERVENED TRAINING
The present invention belongs to the technical fields of privacy computing and federated learning. Provided is a federated unlearning method based on malicious terminal intervened training. In the present invention, the influence of a malicious client on a global model is eliminated by means of federated unlearning, and a parameter update of the malicious client is subtracted from a final global model parameter generated by means of federated learning, and thus training is continued by using a theoretically unusable low-quality model, so as to reduce the re-training time, such that a server can more quickly delete the influence of the malicious client during the execution of an unlearning operation, without the need to ask for the willingness of a client, the contribution of which is deleted; a comparison mechanism for determining the effect of an unlearning model in the previous round and the effect of the unlearning model in the current round is provided to analyze an unlearning effect, such that the unlearning operation ends in advance to inhibit influence caused by excessive unlearning of the unlearning model; and a final unlearning model is trained by using a small number of data sets, such that deviation of the model caused by a training process is recovered, thereby effectively improving the accuracy of the final unlearning model.
The present invention relates to an ultra-low-frequency large-bandwidth sound-absorbing material, characterized in: being composed of sound-absorbing units arranged in a periodic array, the sound-absorbing units being composed of a one-way acoustic wave primary channel, and, disposed along the acoustic wave primary channel at a certain distance from one another, micro-perforated plates and expansion cavities, the number of micro-perforated plates being the same as the number of expansion cavities; the micro-perforated plates are arranged in the acoustic wave primary channel, and a first micro-perforated plate is located at an inlet end of the acoustic wave primary channel; the expansion cavities are communicated via the acoustic wave primary channel, and the final expansion cavity is arranged at an outlet end of the acoustic wave primary channel; and in the direction from the inlet end to the outlet end of the acoustic wave primary channel, the volume of the expansion cavities gradually increases. The ultra-low-frequency large-bandwidth sound-absorbing material disclosed in the present application has a simple structure and small dimensions, and, by means of optimized design, has an effective sound absorption frequency band with a sound absorption coefficient higher than 0.8 which can reach 8.6 times the frequency range, covering the frequency range of 4 Hz to 1595 Hz, and having enormous engineering application potential.
The present invention provides an on-machine real-time measurement method and system for a full-closed loop five-axis computer numerical control machine tool. In the system, a high-precision coaxial fixture in a displacement measurement component is used for connecting the component with the machine tool spindle; a multifunctional evaluation electronics box reads the signals of the grating scale of each machine axis in real time, and synchronously triggers the displacement sensor to collect the measured workpiece surface information; a synchronous communication module caches the grating scale signals of each machine axis and the measurement signals of the sensor to the FIFO rotation buffering module of the host computer in parallel to reduce the burden of high-speed transmission; and the host computer performs data processing and coordinate transformation of the grating scale data and the measurement information in the FIFO module, and finally obtains the three-dimensional geometric information of the measured workpiece surface.
G05B 19/39 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using a combination of the means covered by at least two of the preceding groups , and
G05B 19/23 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an incremental digital measuring device for point-to-point control
G05B 19/29 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by positioning or contouring control systems, e.g. to control position from one programmed point to another or to control movement along a programmed continuous path using an absolute digital measuring device for point-to-point control
58.
LARGE-SCALE INTEGRATED DEVICE OF CO2 CAPTURE, SEQUESTRATION AND UTILIZATION
The present invention belongs to the application field of hydrate technology, and discloses a large-scale integrated device of CO2 capture, sequestration and utilization and method. The device separates and purifies CO2 in a forward or reverse way; at the same time, it is configured with a storage simulation system to store the purified CO2; the system is configured with an axial pressure and circumferential pressure system, which can simulate the pressure environment of the deep-sea ocean and provide experimental support for the storage of CO2 in the deep-sea; and the device is reserved for the interface of seawater desalination system module, which can provide an experimental environment for the desalination of seawater by the hydrate method. Finally, the device is equipped with a cold storage system to realize the secondary utilization of energy from industrial high temperature exhaust gas.
B01D 53/00 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
A variational principle-based neural operator training and partial differential equation system solving integrated method, a medium, and a product. The method comprises: performing sampling on a parameter space of a system of partial differential equations to form a dataset only containing discrete parameter fields, dividing the dataset into an offset set, a test set, and an unlabeled set, dividing the unlabeled set into multiple batches, and forming a mask tensor of a boundary condition; predicting nodal solutions of discrete parameter field samples in the unlabeled set by using a neural operator module so as to obtain a discretized functional as a system functional estimate; and calculating a gradient of the functional estimate to a nodal solution, using a norm of the gradient as a minimization objective, acquiring an update step size of the current nodal solution, and updating the weight of the module. According to the present invention, two tasks of solving operators of the system of partial differential equations and training neural operators are integrated in one framework and then completed, and a variational operation is introduced to construct an unlabeled optimization objective so as to replace a data-driven training error term, thereby saving the time and computing power for generating a large number of labels required to construct a data-driven error term.
Disclosed in the present invention are a method and system for automated flood event division and water subsiding correction, comprising the following steps: step 1, data collection and processing; step 2, base flow separation; step 3, preliminary division of flash flood events; step 4, testing of a multi-peak flash flood event; step 5, fitting of a level-discharge loop rating curve; and step 6, flood event process correction. With regard to difficulties in testing multi-peak flash flood events, the present invention performs K-S testing according to the probability distribution of a runoff coefficient, thereby accurately identifying different peak types and improving the accuracy of automated flood event division. In addition, with regard to difficulties in implementing automated water subsiding correction, the present invention corrects discharge processes of flood events on the basis of an anticlockwise level-discharge loop rating curve fitting method according to peak discharge value classification, so as to rationalize same, thereby remarkably reducing the labor and time required for flood event division and water subsiding correction, helping to improve the efficiency of reorganizing hydrological data, and providing a technical support for completing an automated drainage basin forecasting and early-warning system.
NingBo Institute of Dalian University of Technology (China)
Inventor
Ya, Bin
Zhang, Xingguo
Meng, Linggang
Zhou, Bingwen
Shan, Changzhi
Liu, Yunfeng
Abstract
A device for improving quality of aluminum alloy horizontal continuous casting billet by applying ultrasonic treatment is provided, including an ultrasonic generator, an ultrasonic transducer, an amplitude transformer, a holding furnace, an ultrasonic probe and a traction device. The ultrasonic generator is electrically connected with the ultrasonic transducer; the ultrasonic transducer is threadedly connected with the ultrasonic probe through the amplitude transformer, and the ultrasonic probe is placed in the holding furnace; a communication opening is formed at a bottom of the holding furnace, and the traction device is installed at the communication opening; the holding furnace is further poured with metal liquid.
The present invention relates to the fields of LED dot matrix screens and flexible electronics, and provides a flexible LED dot matrix screen having no image distortion under a large stretching amount. The flexible LED dot matrix screen comprises N×M square cells, 2N-1 common anode VCC pins, and 2M-1 common cathode pins that are arranged periodically. The LED dot matrix screen is connected to external driving and control modules by means of the pins, so that control of dynamic image display of the LED dot matrix screen is implemented. Under the action of a unidirectional tensile load with a stretching amount no more than 50% of the overall size of the dot matrix screen, the LED dot matrix screen of the present invention can always obtain a deformation with a Poisson's ratio of -1 under a stretching amount of 5-50% to maintain the geometric similarity of the image, thereby implementing dynamic image display without distortion under large stretching; the out-of-plane buckling deformation of the flexible substrate is fully considered in the design process, so that the stretchable flexible LED dot matrix screen can logically make use of the out-of-plane buckling deformation to significantly reduce in-plane stress, thereby obtaining the property of recovery from deformation under a large stretching amount, and thus prolonging the service life of the stretchable flexible LED dot matrix screen.
G09F 9/33 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
G09F 9/30 - Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
63.
Active scene mapping method based on constraint guidance and space optimization strategies
The present invention proposes an active scene mapping method based on constraint guidance and space optimization strategies, comprising a global planning stage and a local planning stage; in the global planning stage, the next exploration goal of a robot is calculated to guide the robot to explore a scene; and after the next exploration goal is determined, specific actions are generated according to the next exploration goal, the position of the robot and the constructed occupancy map in the local planning stage to drive the robot to go to a next exploration goal, and observation data is collected to update the information of the occupancy map. The present invention can effectively avoid long-distance round trips in the exploration process so that the robot can take account of information gain and movement loss in the exploration process, find a balance of exploration efficiency, and realize the improvement of active mapping efficiency.
A feedback generative adversarial network having a channel-spatial attention mechanism for agent path finding, comprising: first, acquiring an environmental map containing obstacles, a starting point and an end point, and dividing the environmental map into a training set and a test set; second, inputting the training set into a modified rapidly-exploring random tree algorithm, and using the modified rapidly-exploring random tree algorithm to generate a real map path; third, constructing a series channel-spatial feedback attention model; and finally, establishing a feedback generative adversarial network having the channel-spatial attention mechanism. The training set is input into the network after the network has been established; after training is finished, the weight is stored; and then the test set is input into the network so as to obtain an optimal path. The present invention fully considers the timeliness and accuracy and can quickly find a path so as to improve the efficiency, and the generated paths contain the optimal path and are mostly concentrated near the optimal path, thereby improving the accuracy. The addition of the attention mechanism enhances the correlation between features, thereby obviously improving the quality of the generated paths.
A preparation method for a hydrogel electrode, which method comprises the following steps: preparing a mold required for preparing a hydrogel electrode reverse mold; sequentially cleaning an electrode support (3) with isopropanol, ethanol and deionized water, thoroughly drying same, and then treating same by using a plasma surface treatment machine; assembling and fixing the electrode support (3) and an Ag/AgCl button (4) into the mold; and sequentially injecting a prepolymer solution of an adhesive hydrogel (2) and a prepolymer solution of a conductive hydrogel (1) into the mold. The conductive hydrogel (1) has a relatively low electrode-skin contact resistance and high robustness, and can be repeatedly used for a long period of time; and the adhesive hydrogel (2) can be combined with a conductive layer and the electrode support (3) via a chemical bond, such that the influence of interface layering and friction between a hydrogel material and the support on the use of a semi-dry electrode is avoided.
A haptic signal encoding method and apparatus, a haptic signal decoding method and apparatus, and a device, relating to the technical field of encoding and decoding. The haptic signal encoding method comprises: acquiring N first haptic signals (S101); generating M first signal blocks according to the N first haptic signals (S102); according to spatial information of the N first haptic signals, a target signal amplitude corresponding to a primary haptic signal in each first signal block, and a target frequency corresponding to the primary haptic signal in each first signal block, determining a spatio-temporal shield threshold matrix corresponding to each first signal block (S103); on the basis of the spatio-temporal shield threshold matrix corresponding to each first signal block, filtering out some secondary haptic signals comprised in each first signal block, to obtain M second signal blocks (S104); and encoding N second haptic signals to generate a target bitstream (S105), wherein the N second haptic signals are obtained on the basis of performing a splicing operation on M second signal blocks, and the N second haptic signals comprise some signal sources of the N first haptic signals. The haptic signal encoding method takes into account the mutual shielding effect of haptic signals in time and space in an encoding process, reduces information redundancy of a target bitstream obtained by encoding, and improves the encoding efficiency.
Disclosed is an electro-Fenton reaction apparatus used for wastewater treatment, comprising multiple gas diffusion chambers (5) arranged in parallel in a reaction tank (3), wherein cathodes (1) are arranged outside the corresponding side walls on the gas diffusion chambers (5) respectively, and anodes (2) are correspondingly arranged in parallel with the cathodes (1) at equal intervals; the several cathodes (1) and the several anodes (2) are respectively connected to a power supply (4); a coil pipe structure is arranged in the interior of the gas diffusion chamber (5), one end coil pipe structure is in communication with an air inlet (6), and the other end is in communication with an air outlet (7); several water inlets (9) and several water outlets (10) are provided on the reaction tank (3). The present invention utilizes gas diffusion electrodes for oxygen provision, enhancing the oxygen mass transfer efficiency. Both sides of the gas diffusion chamber can supply gas to the cathodes, efficiently utilizing the space of the reaction apparatus. The wastewater treatment effect is good, the current efficiency is high, the energy consumption is low, and the operation and maintenance cost is low.
A carbon dioxide sequestration method based on reservoir wettability optimization design and layered regulation, which proposes the following four schemes for a carbon dioxide sequestration process: a carbon dioxide sequestration process seepage characteristics simulation scheme, a reservoir wettability optimization design scheme, a reservoir wettability regulation scheme and a carbon dioxide sequestration well layout design scheme. Firstly, a quantitative relation between the contact angle and the carbon dioxide seepage characteristics of a reservoir is obtained by relevant methods, a large scale simulator is used to quantitatively simulate the influence of the contact angle distribution of the reservoir on carbon dioxide sequestration, and layered optimization design and regulation of reservoir wettability are carried out according to the simulation results; and a well layout mode of “using one well for multiple purposes—using two wells in conjunction—adopting a network layout” is used to improve the flexibility of well layout.
NINGBO RESEARCH INSTITUTE OF DALIAN UNIVERSITY OF TECHNOLOGY (China)
Inventor
Yan, Jun
Hu, Haitao
Yang, Zhixun
Geng, Dongling
Lu, Qingzhen
Chen, Jinlong
Su, Qi
Wu, Shanghua
Abstract
A marine cable multifunctional integrated software development system, a method, and a storage medium. The marine cable multifunctional integrated software development system includes a pre-processing module, an integrated software analysis module, a performance verification module, a post-processing module, and a data-driven module based on a cloud database. The method includes: inputting or calling engineering basic data, constructing and arranging structural elements, completing the cross-section design of the marine cable, carrying out the optimization design on the cable section layout and line type based on a section performance analysis result, and then carrying out the safety check; storing and reading key data in the system, and predicting and designing a cable section layout mode and a cable line type structure rapidly and intelligently; and carrying out visual display and export on a system calculation result.
A modeling, analysis and optimization integration-oriented adaptive geometric modeling method for a combined thin-walled element structure, comprising: first, implementing precise geometric modeling for a combined thin-walled element structure by using multi-level NURBS based free-form deformation (MNFFD); second, on the basis of the MNFFD method, establishing a modeling and analysis unified model applicable to isogeometric analysis of the combined thin-walled element structure; and finally, on the basis of the MNFFD method, establishing a modeling, analysis and design unified model applicable to the collaborative design of the shape and reinforcement layout of the combined thin-walled element structure. The present invention fundamentally solves the modeling robustness problem from a gap and overlap between thin-walled elements due to the lack of precise topological consistency in traditional modeling methods, provides a new tool for optimization design of engineering thin-walled structures, can greatly improve product design precision, and can shorten the development period; by using the MNFFD, geometric dimensionality reduction transformation from a three-dimensional design domain to a two-dimensional design domain can be achieved, and the problem of adaptive updating of design models is solved, thereby achieving design domain decoupling of combined thin-walled element structures having complex assembly relationships.
G06F 30/12 - Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
71.
MULTI-PHASE WAVEFIELD INVERSION METHOD CONSIDERING BOTH BODY WAVES AND SURFACE WAVES IN HALF-SPACE OF ROCK MEDIA
The present invention provides a multi-phase wavefield inversion method considering both body waves and surface waves in half-space of rock media to address the deficiency in existing methods that neglect surface wavefields. In the present invention, Rayleigh components that strictly satisfy standard elliptic polarization characteristics in a half-space are extracted with Snell's Law of complex angles and the forward modeling and inversion theory of body waves. Then, the phase separation is executed to separate the body and Rayleigh waves. The pre-arrival components of S-waves are truncated to solve optimal incident angles of body waves. Thus, a Rayleigh wavefield inversion is implemented with ground Rayleigh components, and a body wavefield inversion is implemented with ground body components and their incident angles. Finally, based on linear elastic characteristics of the half-space of rock media, single-phase body wavefields and Rayleigh wavefields are superposed to form total multi-phase wavefields with the linear superposition principle.
The present invention belongs to the technical field of hydrate application, and proposes an electric field-based CO2 capture apparatus by a hydrate method and a method therefor. Small particles of hydrate are generated by incoming seawater and incoming hydrate former at low temperature and high pressure. After flowing through the electric field, the particles are quickly formed, and then separated, dried and compressed efficiently by a solid-liquid separation chamber. Finally, hydrate blocks are produced. The combination of a stirring method, a spraying method and an external electric field can effectively solve the characteristics of slow hydrate formation and long cycle. The solid-liquid separation chamber can be designed to efficiently filter out the hydrate particles and prevent a filter plate from blocking. The use of heat exchange chambers in many places make the cooling amount in the discharged waste recycled, greatly thereby improving the utilization efficiency of energy and economic benefits.
The present disclosure relates to a tactile pattern Super Resolution (SR) reconstruction method and acquisition system, which belong to the field of tactile perception. First, a High Resolution (HR) tactile pattern sample is obtained by using a Low Resolution (LR) tactile sensor; then, a deep learning-based tactile SR model is trained by using a tactile SR data set; and finally, reconstructing the tactile data of a contact surface to be measured as an SR tactile pattern by using the tactile SR model. The present disclosure uses the existing taxel-based LR tactile sensor and adopts a deep learning-based tactile SR reconstruction technology, which can effectively restore the shape of the contact surface, improves the resolution of the tactile sensor, and meanwhile, maintains the characteristics of the sensor being light, flexible, and easy to be integrated into devices, such as a robot.
G06T 3/4053 - Scaling of whole images or parts thereof, e.g. expanding or contracting based on super-resolution, i.e. the output image resolution being higher than the sensor resolution
The present invention belongs to the field of petrochemical engineering. Disclosed is a large-scale preparation process for a PIM-1 asymmetric gas separation membrane doped with polyethylene glycol small molecules. On the basis of a dry-wet phase inversion membrane preparation process, the present invention first regulates and controls a gelation solidification process of a membrane casting solution by means of polyethylene glycol small molecules so as to improve the hydrophilicity of a membrane structure while thinning a compact functional layer, and form a mass transfer channel for polyethylene glycol to diffuse into the compact functional layer, and then, by means of a capillary action induced by directional water evaporation, achieves directional migration and enrichment of polyethylene glycol, thereby achieving large-scale preparation of the PIM-1 asymmetric gas separation membrane having the compact functional layer doped with polyethylene glycol small molecules, and simultaneously achieving high permeability and high selectivity. With regard to the novel gas separation membrane, the thickness of the compact functional layer is about 1.10μm, the carbon dioxide permeation rate reaches 2230 GPU, the carbon dioxide/nitrogen selectivity reaches 68.5, the oxygen permeation rate is 179.1 GPU, and the oxygen/nitrogen permeation selectivity reaches 5.5.
B01D 69/02 - Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or propertiesManufacturing processes specially adapted therefor characterised by their properties
B01D 67/00 - Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
B01D 53/22 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by diffusion
75.
CAVITATION LOAD-REDUCTION DEVICE FOR UNDERWATER VEHICLE HAVING ADJUSTABLE WATER ENTRY ANGLE
A cavitation load-reduction device for an underwater vehicle has adjustable water-entry angles. It contains a cavitator disposed at a head end of an underwater vehicle, a front end of the cavitator being detachably connected to a head fairing device that is coaxially arranged with the cavitator. The head fairing device comprises a head fairing, a plurality of notches are arranged in a rear end of a side wall of the head fairing around an axis of the head fairing, fairing tiles hinged to the notches are arranged at the notches, and the fairing tiles are matched with the notches. Each fairing tile retractable arm is separately hinged to the fairing tile and the cavitator, and the fairing tile retractable arms are used to drive the fairing tiles to rotate around a hinge point of the fairing tiles and the head fairing.
A pipeline broadband sound insulation structure, whose effective sound insulation frequency band with sound wave attenuation greater than 20 dB can reach 5 octaves. The specific structure is constituted by structural components, such as a sound wave inlet section (1); expansion chambers (2, 4, 5); partition plates (3) dividing the expansion chambers (2, 4, 5) into a plurality of sections; arranged inside the body of each section of the expansion chambers (2, 4, 5), reducing pipes (21, 41, 51), perforated pipes (22, 42, 52) and diverging pipes (23, 43, 53); and a sound wave outlet section (6). When external sound waves pass through the sound insulation structure, most of the sound energy can be reflected back to a sound wave inlet side.
The present invention belongs to the field of engine control. Provided is a control design method for a quick response during a starting process of an aero engine. The method comprises: performing optimization by using an N-dot control plan and an intelligent optimization algorithm, so as to obtain an acceleration target curve; then designing a controller on the basis of active disturbance rejection control theory (ADRC); and finally, minimizing the duration of a starting process of an engine, so as to complete a quick response. The present invention can solve the problems in conventional control methods of the difficulty ensuring time consistency in a transition state of an aero engine, and the reliability being relatively low; and the present invention relates to a control design method for a quick response in a transition state of an aero engine on the basis of ADRC, which control design method uses an N-dot control plan, and can shorten the transition-state adjustment duration while achieving stable operation of the aero engine.
A main frame structure having box-section bearing beams of a launch vehicle engine includes a body. The body includes upper bearing table tops, lower bearing table tops, a cross gasket, a connecting ring and the box-section bearing beams. The box-section bearing beam includes an upper surface, a lower surface and two side beam walls, and has a cavity structure. Penetrating transverse ribs penetrating the two side beam walls are arranged on the box-section bearing beams, and one ends of the box-section bearing beams are circumferentially distributed at an outer side of the connecting ring. The lower bearing table tops are arranged at the outer side of the connecting ring, the lower bearing table tops are connected to the cross gasket, and the other ends of the upper surfaces and the lower surfaces are connected by means of arc chamfers and are connected to the upper bearing table tops.
The present invention discloses a topological preserving deformation method for a 3D model based on a multiple volumetric harmonic field, and belongs to the fields of computer graphics, computational mathematics, topology and differential geometry. Firstly, a tetrahedral mesh is constructed between a source 3D model and a target 3D model; then, a domain of topological transformation in a deformation process is calculated based on a traditional single volumetric harmonic field; special multiple boundary conditions are set; next, a multiple volumetric harmonic field is calculated; and finally, topological preserving surface deformation is induced. The present invention can find the domain of topological transformation in the deformation process based on a saddle point in the traditional volumetric harmonic field, and can adaptively construct the multiple volumetric harmonic field that can induce topological preserving deformation, so as to generate topological preserving deformation surfaces under the guidance of the multiple volumetric harmonic field. The method has universality and high efficiency for 3D model deformation of the same topology, requires less computational cost compared with the traditional large deformation diffeomorphism metric mapping, and can be widely used.
Disclosed in the present invention is a new bone tissue needle biopsy sampling pathological knife, wherein a handle at an upper portion is used as a holding and stress part; a tubular cavity at a front end of a tubular hollow knife body is used for accommodating a sample to be taken; a smooth peripheral circular knife head at a distal end encircles target tissue when advancing; and the pathological knife is rotated to use the torsional force of a wedge-like bone knife to destroy a joint between the sample to be taken for examination and adjacent tissue thereof. The device has a rational structure, good biocompatibility and sufficient strength. By optimizing the structure of the knife head, the device has the functions of both a conventional trephine and a taking-out device, thereby simplifying the procedure of a needle biopsy, solving the problem of the difficulties in sampling bone tissue for examination with the size limitations of a needle biopsy device, effectively increasing the success rate of the needle biopsy, and shortening the operation time.
The present invention discloses a surface tension driven flexible electronics transfer printing method which uses a surfactant liquid membrane or a surfactant bubble as a transfer printing stamp, to realize the transfer printing of an electronic device with nanometer/micron/submillimeter thickness. A process of transfer printing is transparent and visible in a “what you see is what you get” manner to realize the accurate positioning of the electronic device. A local load technology is introduced, which is suitable for arbitrary complex curved substrate to realize diverse transfer printing. The electronic device can be transfer-printed to an application substrate with extremely-low interfacial adhesion, without the requirement for the strong and weak adhesion switching strategy of the traditional transfer printing. An unbearable electronic device membrane can be transfer-printed to an fragile receiving substrate with no loss or low loss, without the introduction of pre-pressure.
H05K 3/00 - Apparatus or processes for manufacturing printed circuits
H05K 3/12 - Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern using printing techniques to apply the conductive material
Provided is a method for producing benzyl alcohol and/or benzaldehyde by reacting ethanol with methanol in the presence of a modified hydroxyapatite supported by Zn. The method can advantageously improve the selectivity of benzyl alcohol and/or benzaldehyde and/or conversion of ethanol or methanol.
C07C 29/34 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of hydroxy groups by condensation involving hydroxy groups or the mineral ester groups derived therefrom, e.g. Guerbet reaction
A clamping system and adaptive clamping method for a thin-walled curved surface member turning machining. The clamping system comprises an air pressure circuit, a vacuum suction fixture (11) and an electromagnetic control circuit, wherein a curved surface member is positioned and clamped on an upper surface of the vacuum suction fixture (11), and a rubber sealing ring on an auxiliary support of the fixture is in contact with an inner contour of a curved surface, so as to divide a closed space in the member into three independent suction force action regions, i.e., a flange end surface, a first vacuum cavity (111) and a second vacuum cavity (112); and three independent vacuum channels are arranged inside the fixture, and are in communication with various branch circuits by means of pneumatic hoses, the branch circuits being controlled to be connected or disconnected by means of electromagnetic directional valves. The vacuum suction clamping system has a plurality of clamping modes, can be adaptively adjusted according to process stages of the curved surface member, reduces stress deformation of the member after clamping and unloading in a semi-finishing stage, and controls vacuum suction clamping deformation of the member in a precision machining stage, such that differential clamping requirements of the thin-walled curved surface member in different turning stages are satisfied.
B23B 25/06 - Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work
84.
Low-frequency acoustic wave generating device for detecting pipeline blockage
NINGBO INST. OF DALIAN UNIVERSITY OF TECHNOLOGY (China)
DALIAN UNIVERSITY OF TECHNOLOGY (China)
Inventor
Liang, Huiyong
Zhao, Jiafei
Lv, Xin
Song, Yongchen
Chu, Jiawei
Shen, Shi
Yang, Lei
Lu, Xingyu
Zhao, Linan
Zhang, Shuangqing
Abstract
A low-frequency acoustic wave generating device for detecting pipeline blockage related to the technical field of pipeline detection is provided and includes a sealing shell configured to be communicated with a pipeline, a sealed pressure environment is formed inside the sealing shell. A low-frequency electroacoustic transducer is disposed inside the sealing shell, the low-frequency electroacoustic transducer is connected to a signal generator and is configured to transmit an acoustic wave into the pipeline. The device transmits the acoustic wave signals to a high-pressure gas pipeline, combined with a signal generator capable of generating any waveform, thereby emitting any waveform of acoustic wave signal into the pipeline. The use of acoustic waves with special markings and characteristics for pipeline blockage detection can improve the anti-noise interference ability of the acoustic wave detection, and improve the precision of the detection.
G01N 29/00 - Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic wavesVisualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
F17D 5/00 - Protection or supervision of installations
An anode and cathode synergistic electrocatalytic system for wastewater treatment and an application, which belong to the field of wastewater treatment. The method comprises the following steps: using an electrode having a "dual function" as a cathode (2-1), sequentially arranging same and an anode (2-2) in a crisscrossed and parallel mode and fixing same into an electrode group, and placing the electrode group in a reaction tank (2-3) which has an aeration device b(2-4) at the bottom thereof, separately connecting the cathode (2-1) and the anode (2-2) of the electrode group to a power supply (2-5), and performing electrocatalytic degradation on wastewater. In the electrocatalytic degradation process, a synergistic electrocatalytic degradation effect of the anode and the cathode is achieved by means of the mutual coordination of heterogeneous electro-fenton of the cathode (2-1) and oxidation of the anode (2-2). The cathode and anode synergistic electrocatalytic process has a good wastewater treatment effect, high current efficiency, low energy consumption, and low operation and maintenance costs.
A cross-shaped high-temperature three-dimensional Hall sensor includes the X column, the Y column and the Z column all made of third-generation semiconductor materials. The X column, the Y column and the Z column are vertically connected to each other. An electrode C1 and an electrode C2 are respectively arranged at two ends of the Z column. An electrode C3 and an electrode C4 are respectively arranged at two sides of the Y column. An electrode C5 and an electrode C6 are respectively arranged at two sides of the X column. The current description uses the excellent high temperature performance of the third generation semiconductor to make the sensor work in the high temperature environment, the new structure greatly reduces the volume compared with the other device packaging combined Hall sensor, and makes the sensor work in very narrow space.
A method for producing water-soluble azo dyes by utilizes continuous diazotization reaction and continuous coupling reaction in a pipeline reactor. The diazo component, hydrochloric acid and sodium nitrite are simultaneously fed at the bottom of the pipeline reactor at room temperature, to perform a diazotization reaction in the pipeline and leave the diazotization reaction site in time, followed by performing the coupling reaction with the introduced coupled component. Under stirring of micro stirring blades, the materials at each flow layer are uniformly mixed and reacted, and the reaction materials flow upward under the action of a feed driving force and are discharged from the top of the continuous reactor to produce a water-soluble azo dye.
A coupled physics-informed neural network for solving the displacement distribution of a bounded vibrating rod under the action of an unknown external driving force. Provided is a new PINN, called C-PINN, which is used for solving the displacement distribution of a bounded vibrating rod under the action of an external driving force that has relatively little or even no prior information regarding same. The C-PINN includes two neural networks, namely, NetU and NetG. NetU is used for approximating the displacement distribution of the researched bounded vibrating rod; and NetG is used for regularizing u in NetU, so as to satisfy the displacement distribution approximated by NetU. The two networks are integrated into a data-physical hybrid loss function. In addition, the loss function is optimized by using a proposed layered training policy, so as to realize the coupling of the two networks. Finally, the performance of the C-PINN with regard to solving the displacement distribution of the bounded vibrating rod under the action of the external driving force is verified. The C-PINN in the present invention is suitable for solving a multi-class dynamic system that is subjected to an external driving effect and has a dependency relationship with time and space, which comprises solving a temperature distribution under the action of an external heat source, an electromagnetic distribution of electromagnetic waves under the influence of an external source, etc.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
A distributed low energy dynamic thermal management system for solid matter prevention and control in oil and gas transportation pipeline includes pipeline data monitoring terminal, current and electric pulse control terminal, land console, electric heating terminal, wiring flange, oil and gas transportation pipeline, valve structure. The system monitors the state of the pipeline in real time by the pipeline data monitoring terminal, and transmits the monitoring data to the current and electric pulse control terminal in real time, the current and electric pulse control terminal produces different thermal responses to the electric heating terminal according to the state in the tube, raises the temperature inside the tube by generating a continuous current, unblocks pipeline by generating high power electric pulse, so as to realize real-time monitoring and local temperature dynamic control of oil and gas transportation pipeline.
A combined disc-type cavitation structure for underwater navigation of an underwater vehicle has an underwater vehicle and a fairing. A plurality of cavitators having sequentially increased outer diameters are sequentially arranged in the fairing. A cavitator receiving groove matched with the cavitator located on the front side is arranged in the center of the front surface of the cavitator located on the rear side in every two adjacent cavitators. The plurality of cavitators can be integrated into a whole by means of the cavitator receiving groove. The cavitator located at the front-most end is a first cavitator, and the remaining cavitators are second cavitators. The first cavitator is connected to the underwater vehicle by means of a buffer. Each second cavitator is respectively connected to the underwater vehicle by means of a driving device configured to axially move the corresponding second cavitator.
Disclosed is a three-dimensional variable damping vibration isolator based on a rubber friction-squeezing mechanism. The vibration isolator is composed of a base, an upper plate, a vibration-isolating spring, a ±-shaped screw rod, lock nuts, rubber damping blocks, and a housing. The rubber damping blocks are vulcanized and bonded to an outer facade of uniformly distributed vertically angled steel of the base, and the rubber damping blocks are opposite one another in pairs. An upper end of the ±-shaped screw rod is fixed to the upper plate by means of upper and lower lock nuts, and a lower-end transverse rod is squeezed by the rubber damping blocks on two sides. Contact surfaces of the rubber damping blocks and the ±-shaped screw rod both are planes each having a variable cross-section design. The vibration-isolating spring is sleeved on a central boss of the base and the upper plate. The structure of the present invention is simple, and the rubber damping blocks can provide horizontal stiffness and three-way damping, thereby having good self-resetting capabilities under horizontal vibrations. The variable cross-section designs can effectively suppress resonance, and the rubber has good buffering and noise reduction functions.
E04B 1/98 - Protection against other undesired influences or dangers against vibrations or shocksProtection against other undesired influences or dangers against mechanical destruction, e.g. by air-raids
E04H 9/02 - Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
F16F 7/08 - Vibration-dampersShock-absorbers with friction surfaces rectilinearly movable along each other
92.
WIND FIELD INTERPOLATION SIMULATION METHOD BASED ON ISOGEOMETRIC SAMPLING
A wind field interpolation simulation method based on isogeometric sampling, the main steps of generating a wind speed time series in the present invention are as follows: first, inputting basic parameters of wind field simulation and the number of initial sampling points, and selecting the sampling points by an isogeometric sampling method. Then calculating the maximum relative error of all frequency bands by a relative error defined, and judging a fitting error and an allowable error given. If the fitting error is greater than the allowable error, increasing the number of sampling points and reselecting the sampling points; if the fitting error is less than or equal to the allowable error, finishing point selection, and using an interpolation function to calculate a lower triangular matrix required by the simulation. Thus a fluctuating wind field can be generated by a harmonic superposition method.
An air-liquid dual-control anti-roll control system for a deep-sea floating wind turbine. The system comprises a device cabin and three closed TLCD loop units, wherein the device cabin is arranged above a box beam; and for each TLCD loop unit, a closed loop is mainly composed of a liquid cabin, an air pipe and a liquid pipe, and is embedded into the structure of a floating foundation. The system of the present invention has a simple structure, is easily and conveniently mounted, is detachable, is easily replaced and is convenient to use. The system of the present invention has universality, designed TLCD loop units are independent of each other, and the start and stop of each TCLD loop unit are integrally coordinated and scheduled by means of a control module, thereby facilitating expansion. The system of the present invention can realize intelligent autonomous control. The control module autonomously determines, according to the rolling direction of a floating wind turbine foundation and by means of analyzing measured motion parameters of the floating wind turbine foundation, which TLCD loop unit to start; and according to the rolling frequency of the floating wind turbine foundation, the control module determines to start an air-control module or a liquid-control module of the TLCD loop unit, and determines the resistance value of a sliding rheostat in the air-control module or the rotation speed of an electric motor of a turboset in the liquid-control module.
F03D 80/00 - Details, components or accessories not provided for in groups
F16F 15/023 - Suppression of vibrations of non-rotating, e.g. reciprocating, systemsSuppression of vibrations of rotating systems by use of members not moving with the rotating system using fluid means
F03D 13/20 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors
F03D 13/25 - Arrangements for mounting or supporting wind motorsMasts or towers for wind motors specially adapted for offshore installation
94.
TACTILE SIGNAL ENCODING METHOD, TACTILE SIGNAL DECODING METHOD, AND RELATED DEVICE
The present application belongs to the field of video encoding and decoding. Disclosed are a tactile signal encoding method, a tactile signal decoding method, and a related device. The tactile signal encoding method in the embodiments of the present application comprises: determining a primary tactile signal from at least two tactile signals and spatial information of the primary tactile signal; according to each primary tactile signal and the spatial information of the primary tactile signal, determining a first model; according to the first model corresponding to the primary tactile signal, determining a secondary tactile signal corresponding to the primary tactile signal, wherein the secondary tactile signal is a signal, which is not completely shielded by the primary tactile signal, among tactile signals at the positions around the primary tactile signal; on the basis of spatial information of the secondary tactile signal corresponding to the primary tactile signal, generating a first mask; and encoding content to be encoded, the spatial information of the primary tactile signal and the first mask, so as to obtain a code stream of the tactile signals, wherein said content comprises a first object to be encoded, which is used for representing the primary tactile signal, and a second object to be encoded, which is used for representing the secondary tactile signal corresponding to the primary tactile signal.
An alkali metal ion modified titanium silicalite zeolite TS-1 for gas phase epoxidation of propylene and hydrogen peroxide and a preparation method thereof. The method includes: 1: preparing an alkali metal hydroxide modification solution containing a small amount of TPA+ ions; 2: conducting a controlled hydrothermal treatment on a TS-1 zeolite matrix by using the alkali metal hydroxide solution containing a small amount of TPA+ ions; and 3: conducting post-treatment on the hydrothermally modified TS-1 zeolite. In the washing process, the modified TS-1 zeolite wet material is washed with a low concentration alkali metal hydroxide solution; and alkali metal ions are reserved on the silicon hydroxyl of the modified titanium silicalite zeolite. The prepared alkali metal ion modified titanium silicalite zeolite has significantly improved catalytic performance in the gas phase epoxidation of propylene and hydrogen peroxide.
An adjustable cavitator structure has a cavitator disposed at a head end of the underwater vehicle. The cavitator has a cavitator body, a center of which is connected to the head center of the underwater vehicle through a damper. The front end of the cavitator body is detachably connected with a head fairing device. The cavitator body is of a double-layer structure including a first layer and a second layer. A plurality of cavitator disc face retractable sheets are installed on the first layer and the second layer and are evenly distributed around the axis of the cavitator body, and are slidably connected with the corresponding first layer or second layer. A buffer driving mechanism for driving the cavitator disc face retractable sheets to slide in a radial direction of the cavitator body is installed at the head end of the underwater vehicle.
An interface interconnect structure is provided for efficient heat dissipation of a power electronic device. The structure includes a first low temperature solder layer and a second low temperature solder layer, a metal-foam metal composite material is placed between the first low temperature solder layer and the second low temperature solder layer. The metal-foam metal composite material has designability in structure and performance. The thermal conductivity and coefficient of thermal expansion (CTE) of the thermal interface interconnect structure can be configured according to the selected encapsulating materials for a power electronic device, thereby achieving bisynchronous improvement in the heat dissipation efficiency and the CTE matching degree between the encapsulating materials. A remelting temperature of the interface interconnect structure is greater than melting points of the first low temperature solder layer and the second low temperature solder layer, achieving “low temperature soldering and high temperature service.”
H01L 23/373 - Cooling facilitated by selection of materials for the device
H01L 21/48 - Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups or
H01L 23/00 - Details of semiconductor or other solid state devices
98.
MULTI-SCALE HYBRID ATTENTION MECHANISM MODELING METHOD FOR PREDICTING REMAINING USEFUL LIFE OF AERO ENGINE
The present invention relates to the technical field of health management and prediction of aero engines, and provides a multi-scale hybrid attention mechanism modeling method for predicting remaining useful life (RUL) of an aero engine. Firstly, data preprocessing is performed to obtain a sample, an RUL label is set, and a true value of the RUL of the sample is obtained. Secondly, a multi-scale hybrid attention mechanism model composed of a position coding layer, a feature extraction layer and a regression prediction layer is constructed. Thirdly, the model is trained, and a difference between an RUL predicted value outputted by the model and the true value is gradually reduced by minimizing a loss function until a stop standard is reached. Finally, the RUL is predicted by using the trained model. According to the present invention, the full fusion of information of different time steps of a single sample can be achieved, and the correlation between all samples can be taken into account; and then the RUL of the aero engine can be predicted more accurately.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
G06F 18/214 - Generating training patternsBootstrap methods, e.g. bagging or boosting
99.
3D-PRINTING-ASSISTED METHOD FOR PREPARING MULTI-SCALE METAL THREE-DIMENSIONAL SURFACE STRUCTURE, AND PRODUCT
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY (China)
DALIAN UNIVERSITY OF TECHNOLOGY (China)
Inventor
Yang, Ronggui
Lei, Yifan
Hu, Yongyan
Liu, Xiuliang
Wen, Rongfu
Abstract
The present invention relates to the field of micro-nano-structure enhanced heat transfer surfaces. Provided are a 3D-printing-assisted method for preparing a multi-scale metal three-dimensional surface structure, and a product. The method comprises: preparing a micron-scale high-precision three-dimensional structure mask by means of 3D printing technology, wherein the three-dimensional structure mask comprises a hollow portion and a body portion, and the hollow portion matches a three-dimensional structure model; and performing material conversion on a metal substrate on which the three-dimensional structure mask is fixed, so as to obtain a target metal, wherein the metal substrate may be machined first, and the surface of the target metal is provided with a three-dimensional structure that matches the three-dimensional structure model. In the 3D-printing-assisted method for preparing a multi-scale metal three-dimensional surface structure provided by the embodiments of the present invention, the precision of a metal structure is improved by improving the precision of the mask, and a multi-scale and multi-material heat exchange structure having micron-scale precision and a complex structure is prepared on the metal surface, such that the metal phase transformation heat-exchange efficiency is improved.
The present invention relates to the field of end-to-end self-learning of missing aero-engine data, and provides a generative adversarial multi-head attention neural network self-learning method for aero-engine data reconstruction. The method comprises: first, preprocessing samples, prefilling standardized data by using a machine learning algorithm, and using information obtained after prefilling as part of training information to participate in network training; second, constructing a generative adversarial multi-head attention network model, and training the generative adversarial multi-head attention network model by using a training sample set; and finally, generating a sample by using a trained sample generator G. According to the present invention, distribution information of data can be better learned by using a generative adversarial network, spatial information and time sequence information between aero-engine data are fully mined by using a parallel convolution and multi-head attention mechanism, and compared with existing filling algorithms, the algorithm can effectively improve the self-learning precision of missing data, and has great significance for subsequent prediction and maintenance of an aero-engine.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
G06N 3/04 - Architecture, e.g. interconnection topology
patents
