11results about How to "Resolution time" patented technology

This invention relates to the field of geological engineering technology, and in particular to an experimental method for determining the subcritical fracture toughness of fractures under well-closing conditions in shale reservoirs. The method comprises: obtaining a first shale sample and a second shale sample; placing the first shale sample in an experimental system and injecting fracturing fluid into the system until subcritical propagation occurs, then determining the peak pressure required for subcritical propagation; placing the second shale sample in the experimental system and injecting fracturing fluid to the preset well-closing pressure value, without injecting fracturing fluid, then determining whether subcritical propagation occurs in the second shale sample and the time required for subcritical propagation; and finally, calculating the corresponding subcritical fracture toughness. The advantage of this invention is that it enables the determination of whether subcritical propagation occurs in shale gas reservoirs under well-closing conditions, and the calculation of subcritical propagation fracture toughness, providing important theoretical basis and reference for the construction design and scheme optimization of deep shale gas reservoirs.

The utility model provides cold header die automatic replacement mechanism relates to cold header die replacement technical field, the utility model discloses fixed installation nitrile rubber sucking disc on the bottom surface of negative pressure cylinder, the inside sliding joint of negative pressure cylinder has piston board, the surface fixed mounting of piston board has push away link, the one end fixed mounting of push away link away from piston board has the lifting plate, the both sides surface of negative pressure cylinder all fixed mounting has first fixed plate and second fixed plate first fixed plate's surface fixed mounting has first electric telescopic handle, second fixed plate's surface fixed mounting has second electric telescopic handle, the utility model discloses through adsorption clamping double fixed device, makes and utilizes the automatic collaborative action of negative pressure adsorption and mechanical clamping, need not manual intervention to change the mould link, solves the problem that traditional manual change mould leads to long equipment downtime and high security risk, guarantees the continuous operation of cold header automatic production line, improves equipment comprehensive utilization rate.

The present application relates to the technical field of crane sling deflection detection. The present application relates to a crane sling deflection detection method based on artificial intelligence. It includes the following steps: S1, build a multi-modal perception array, synchronously collect multi-source perception data, the multi-modal perception array contains an industrial camera, an IMU inertial measurement unit, a cart trolley displacement encoder and a wind speed sensor, which respectively obtain real-time image data of the sling, inertial attitude data of the sling, crane walking motion data and on-site wind field environment data; The present application builds a multi-modal perception array composed of an industrial camera, an IMU inertial measurement unit, a displacement encoder and a wind speed sensor, realizes the synchronous collection of multi-source data of the sling image, inertial attitude, crane motion state and on-site wind field environment, breaks through the limitation of single sensor detection in the prior art, and multiple sensors play their respective roles and complement each other's shortcomings, laying a foundation for subsequent high-precision detection from the data collection level.

This invention discloses a method and device for constructing a cross-island heterogeneous federated learning system based on homomorphic encryption. After local training on the client, the local model is packaged and sparsified at the packet granularity. The sparsed packet data is homomorphically encrypted, and the ciphertext and mask are sent to a parameter server. The parameter server aggregates the data according to the client's ciphertext weights and sends the aggregated ciphertext global model and mask to the client. The client decrypts the global ciphertext and unpacks it to obtain the global model, and updates its local model. The client calculates and returns a sketch of its local model. By clustering the sketch, the fastest client in each cluster is selected as a participant in the next round of training, and the contribution is calculated based on the sketch to obtain the aggregation weights for the next round. The trained local model is then applied to the cross-island heterogeneous federated learning system. This invention can improve the efficiency of homomorphic encryption while protecting privacy, and simultaneously resist the negative impact of lagging on model synchronization.

This invention discloses an adaptive drug delivery system for ischemic stroke, its preparation method, and its application. MMP-2 responsive peptide-drug dimers are loaded onto the surface of mesoporous polydopamine for intervention or treatment of cerebral ischemia-reperfusion injury. The system allows for targeted drug delivery based on individual differences in disease progression among patients, precisely promoting brain injury repair. This invention applies MMP-2 responsive peptides to the treatment of ischemic stroke, using mesoporous polydopamine as a drug carrier, providing reactive sites and loading space for efficient drug loading. The chemical reaction between catechol on the polydopamine surface and the thiol groups on the MMP-2 responsive peptides loads the peptide-drug dimers, thereby achieving responsive drug release on the carrier surface. Simultaneously, this invention utilizes the ability of polydopamine to scavenge reactive oxygen species (ROS), rapidly clearing local ROS and reducing acute damage caused by ischemic stroke.

This invention provides a waste heat recovery power generation zero-carbon energy system. This system primarily utilizes thermal energy, the chimney effect, and wind power generation technology to recover waste heat and generate zero-carbon energy. The system mainly consists of thermal energy, wind turbine ducts, a wind turbine generator, and an energy storage device. The wind turbine ducts generate wind power, which drives the wind turbine generator to produce electricity. Waste heat increases the temperature difference; the greater the temperature difference, the greater the wind power generated by the wind turbine duct, and the more electricity is generated. Both waste heat and solar energy can increase the temperature difference and enhance wind power efficiency. The energy storage equipment can expand the application scope of the waste heat power system.

The application provides a transformer fault feature fusion diagnosis method and system based on multi-modal time series data reconstruction, and relates to the technical field of power system transformer fault diagnosis. First, the time series waveforms of dissolved gas in oil, the time series waveforms of box wall vibration and the time series waveforms of sleeve heat map are captured respectively, and are input into a pre-constructed transformer operation situation reconstruction network for cross-modal physical field space-time alignment processing, to generate a transformer multi-physical field evolution track with a fault energy injection point as a starting reference. Topological source tracking processing of fault feature clues is performed on the track, to obtain a transformer global fault feature topology chain. The chain is input into a fault mode semantic analysis network, to generate a transformer comprehensive diagnosis descriptor that fuses fault type semantic labels and fault space positioning coordinates. According to the descriptor, a local evolution track segment is extracted, a maintenance decision trigger instruction containing a fault residual life consumption rate is generated, and is sent to a transformer online monitoring master station system, to ensure safe and stable operation of the transformer.

The application discloses a design method, a hot forming plate and a vehicle, and relates to the technical field of vehicle engineering, wherein, in order to achieve the above-mentioned purpose, the design method comprises the following steps: selecting test design parameters of the first hot forming plate, the second hot forming plate and the third hot forming plate; obtaining first simulation performance parameters corresponding to the test design parameters through simulation software; judging whether the first simulation performance parameters meet a first performance condition; if yes, obtaining welding test parameters to prepare and weld test pieces, and obtaining welding performance parameters corresponding to the welding test parameters; judging whether the welding performance parameters meet the first performance condition; if yes, selecting the test design parameters and the corresponding welding test parameters as actual design parameters. The application effectively improves the lightweight degree and the debugging efficiency of the vehicle, and reduces the production cost.

This application provides a material screening method, system, apparatus, equipment, and medium. The material screening method includes: performing image scanning processing on materials on a conveyor belt to obtain a test image; uploading the test image to a host computer for identification processing to receive an abnormal material rejection signal fed back by the host computer; responding to the abnormal material rejection signal, performing phase alignment processing between the current scanning sequence and the abnormal material rejection signal based on a synchronous clock to obtain an aligned abnormal material rejection signal; and rejecting abnormal materials according to the aligned abnormal material rejection signal. The material screening method of this application can directly control material screening using hardware, improving the accuracy and efficiency of material screening.

The utility model discloses a mine gushing water purification structure based on in situ repair relates to mine gushing water purification equipment technical field, and the utility model discloses a processing mechanism one end is provided with the speed -reducing motor, and the processing mechanism opposite end is installed with the drainage mechanism, and the processing mechanism and the speed -reducing motor are fixedly connected through the linkage mechanism. The utility model discloses, through the speed -reducing motor drive linkage mechanism in gear box and the meshed connecting gear, make the two connecting shafts in the processing mechanism drive the reverse rotation of the stirring paddle, break through the limitation of traditional same direction stirring, effectively cover the edge area of the processing box, avoid the mixed blind area, and the recess that the processing box inner wall evenly distributes promotes the turbulent flow of water body end in the stirring process, further strengthens the mixing effect of the edge area reagent and mine gushing water, solves the reaction " blind area " problem caused by water quality fluctuation in in situ repair.