14results about How to "Overcome efficiency" patented technology

The application discloses a layout hotspot detection method based on geometric feature analysis, and the implementation steps are as follows: an under-sampling and over-sampling method is used to generate a layout sample set; the number of corner points, short-circuit sensitivity and open-circuit sensitivity of the layout sample are extracted to form a feature vector of the layout sample; an integrated learning model is trained by using a feature vector training set; and the feature vector test set is input into the trained integrated learning model to output a detection result. The application overcomes the problems in the prior art that the imbalance of layout category samples leads to reduced model detection precision, and that the recognition rate of a layout mode that has never been seen before is low and the false positive rate is high. Geometric features are extracted for photolithography hotspots in the layout, so that the application can maintain high detection precision and low false positive rate when detecting a layout that has never been seen before and a complex layout mode.

The utility model discloses an alignment mechanism for pole piece detection, include: base plate, and its both ends end face respectively fixedly be equipped with mounting seat, the first slider and the second slider of sliding setting in the mounting seat, the adjusting end of mounting seat is fixedly equipped with first drive assembly, and the output shaft of first drive assembly is connected and drives corresponding slider sliding, the first pivot assembly of fixedly equipped on the first slider and two second pivot assemblies of fixedly equipped on the second slider, be equipped with the alignment plate of center round hole and racecourse type through -hole, first pivot assembly is worn in center round hole, and two second pivot assemblies are respectively worn in the racecourse type through -hole that sets up parallel to the alignment plate length direction, the pole piece detection camera of fixedly equipped in the alignment plate middle part edge position, through the automatic control of first drive assembly and second drive assembly, has realized the automation of alignment process, has improved alignment efficiency and precision greatly.

The invention belongs to the technical field of biological genetic engineering, and discloses a CRISPR / Cas9 (clustered regularly interspaced short palindromic repeats / associated protein 9) system for specific targeted traceless elimination of a blaNDM-1 gene and an IncN plasmid and application of the CRISPR / Cas9 system. According to the system, sgRNA of an original point conserved sequence is copied by designing an IncN type plasmid carrying a blaNDM-1 gene in a targeting manner, so that the replication capability of the plasmid is destroyed while a drug-resistant gene is eliminated; the carrier delivery efficiency is greatly improved by conjugational transfer to recipient bacteria; the expression of the Cas9 gene is controlled by adopting an arabinose inducible promoter, so that the constitutive toxicity of Cas9 protein is reduced, and the system stability and the editing success rate are improved; the sucrose-induced carrier self-elimination gene carried by the carrier realizes controllable self-elimination of the carrier. The system is not simply superposed, but forms an operation process with a controllable time sequence: efficient delivery is firstly carried out through joint, then cutting is controlled through induction, and finally self-elimination is induced.

The application discloses a kind of wind farm wake evaluation method, device, equipment and storage medium, method includes: constructing physical model and generating coarse grid and fine grid;First calculation result and first flow field are obtained by CFD solution to coarse grid, and first flow field is as the initial flow field of fine grid;Actuator disc parameter is determined according to first calculation result;According to boundary condition, initial flow field and actuator disc parameter, the CFD solution based on actuator disc is carried out to fine grid to obtain second calculation result;Second machine site wind direction is constantly corrected according to second calculation result in second machine site wind direction Actuator disc orientation, until the difference between actuator disc orientation and second machine site wind direction is less than preset threshold, stop correction and obtain the wake parameter in each machine site and preset downstream range.The application corrects actuator disc orientation according to machine site wind direction, can more truly consider the influence of complex terrain and upstream wind turbine wake to downstream wind turbine, improve the accuracy and effectiveness of wind farm wake evaluation.

The invention provides a machining tool and method for a cabin door locking component on flight equipment. The machining tool comprises a base, a first positioning piece, a second positioning piece, a third positioning piece, an electric driving mechanism and a control unit. Through the synergistic effect of the movable first positioning piece, the fixed second positioning piece and the fixed third positioning piece, the positioning and clamping system special for the cabin door locking component is constructed. The second positioning piece and the third positioning piece can stably limit the cabin door locking component simultaneously from two vertical directions due to the unique positioning part design, and the first positioning piece applies pressure from the other side to complete clamping. The structural design is ingenious, one-time rapid and accurate clamping of a cabin door locking component with a complex space structure is achieved, and a solid foundation is laid for subsequent continuous machining of a plurality of to-be-machined parts such as a hook-shaped bent part, a plurality of holes and an extension shaft; the problems of low efficiency and repeated positioning errors caused by sequential clamping machining are fundamentally solved.

The utility model relates to the technical field of dehydration, in particular to a vacuum dehydration drying filter pressing system which comprises a filter press, a vacuumizing module and a heating module, a filter chamber is formed in the filter press, and the heating module is communicated with the filter press to heat materials in the filter chamber. And the vacuumizing module is communicated with the filter chamber so as to extract gas in the filter chamber. The utility model aims to provide a vacuum dehydration drying filter pressing system aiming at at least one technical problem related in the background technology.

The utility model discloses a kind of optical three-way cubic blocks for reflecting, light splitting and optical filter lens, including the solid rectangular cubic block of light-tight, further include: the through hole of the solid rectangular cubic block is penetrated from top to bottom;Dull hole is located in the one side of the solid rectangular cubic block, the depth of the dull hole is to the central axis of through hole, and vertical intersection three-way structure is formed with through hole;Narrow slit is vertically inwards arranged from the outer wall of the solid rectangular cubic block;Through hole, dull hole and narrow slit are orthogonally arranged in space three-dimensional direction.The utility model belongs to optical filter technical field, specifically refers to the optical three-way cubic block for reflecting, light splitting and optical filter lens, to reduce processing complexity, improve optical path accuracy, eliminate light leakage, and at least solve the problem that optical three-way exists when using incident light incidence angle adjustment is not good resulting in optical path deviation or efficiency decline, and signal attenuation, poor flexibility problem.

The invention provides a determination method for rapid screening of plastic part color masterbatch carcinogenic dyes, and the determination method for rapid screening of plastic part color masterbatch carcinogenic dyes comprises the following steps: crushing a plastic sample, adding the crushed plastic sample into dichloromethane, carrying out swelling and decoloration, and carrying out ultrasonic extraction to obtain a swelling mixed solution; adding methylbenzene into the swelled mixed solution to swell and decolor, and performing ultrasonic extraction and concentration to obtain a concentrated extract; adding the concentrated extract into a methanol precipitator, and separating to obtain a precipitate mixed solution; and eluting the precipitate mixed solution through an activated alumina small column, drying, and re-dissolving in methanol to obtain a to-be-detected solution, and analyzing by using a liquid chromatograph-mass spectrometer. Dye molecules are selectively released through step-by-step swelling of dichloromethane and toluene, so that the extraction effect of the color masterbatch dye in the plastic is improved; through combination of step-by-step solvent synergistic swelling extraction and multi-stage purification, drying of polymer dissolved impurities is avoided, and efficient and accurate extraction and determination of the plastic color masterbatch dye are realized.

The present application relates to the technical field of mixers, and discloses a multi-mode composite stirring device, which comprises a stirring barrel, a driving source, an input shaft, a lower stirring mechanism, a driving gear and an upper stirring mechanism; the upper stirring mechanism comprises a cover body, a transmission shaft, a transition gear connected with the transmission shaft and a second stirring shaft connected with the transmission shaft; the second stirring shaft is configured to realize at least one of the following working states: a first working state, in which the second stirring shaft is configured to rotate only around the axis of the input shaft; a second working state, in which the second stirring shaft is configured to rotate around the axis of the input shaft while rotating around its own axis; and a third working state, in which the second stirring shaft is configured to rotate only around its own axis. The lower stirring mechanism and the upper stirring mechanism are arranged, and the upper stirring mechanism can be in three working states, so that the upper and lower layers work cooperatively, and the adaptation capability and the mixing efficiency of the stirring device are significantly improved.

The application discloses a colorless unidirectional diffraction type solar concentrator and a preparation method and application thereof. The colorless unidirectional diffraction type solar concentrator comprises a transparent flat plate substrate, a light orientation layer and a multilayer cholesteric liquid crystal film are attached to the side of the transparent flat plate substrate in sequence, the multilayer cholesteric liquid crystal film comprises a plurality of cholesteric liquid crystal layers, and adjacent cholesteric liquid crystal layers have different pitches; and a coupling light solar photovoltaic cell is arranged on the side of the transparent flat plate substrate. The preparation method comprises the following steps: coating a photosensitive alignment layer on the transparent flat plate substrate and obtaining a sub-micron period light orientation layer through exposure; spin coating or dip coating a cholesteric liquid crystal mixture with different pitches on the surface of the light orientation layer or the cholesteric liquid crystal layer and solidifying to form a multilayer cholesteric liquid crystal film; and arranging a solar photovoltaic cell on the side of the transparent flat plate substrate. The application can realize high-efficiency energy collection of the solar concentrator, is compatible with existing glass, and realizes unidirectional coupling.

The invention relates to an urban low-altitude airspace navigation network performance test and evaluation method and device. The method comprises the following steps: acquiring key operation parameters of navigation service in a test area corresponding to an urban low-altitude airspace navigation network; according to the key operation parameters, evaluation indexes of the navigation service in the test area are determined, and the evaluation indexes comprise coverage rate, continuity, alarm time delay and positioning precision; and obtaining an evaluation result of the navigation service in the test area according to the evaluation index. Through the method provided by the invention, the problems of low efficiency and poor consistency caused by single test item and dependence on artificial experience in the prior art are solved, multi-dimensional quantitative evaluation of the overall performance of the navigation network is realized, powerful technical support is provided for planning, construction, acceptance, operation and maintenance of the low-altitude navigation network, and the method is suitable for popularization and application. And the low-altitude aircraft can operate in a safe and reliable navigation environment.

This invention discloses a U-Pb dating method for common lead by-product minerals based on LA-ICPMS surface scanning technology, comprising: 1. using LA-ICPMS to perform surface scanning on common lead-containing mineral samples and age standards to obtain and measure data; 2. calculating the expected value of the standard sample measurement data; 3. calculating the fractionation coefficient; 4. performing fractionation correction on the samples; 5. initializing the iterative age; 6. calculating the iterative age; 7. rearranging and grouping the sample data according to the iterative age; 8. calculating virtual points and their errors and correlation coefficients; 9. calculating the intersection age to update the iterative age. This invention can quickly obtain data with different U-Pb ratios and small errors, while avoiding the interference of deep fractionation faced by point analysis techniques, thus enabling accurate common lead correction and regression analysis to obtain mineral ages.

This application discloses a rapid storm surge floodplain ensemble forecasting method and system for operational use, comprising: generating an ensemble typhoon path containing multiple deviation paths based on real-time typhoon forecast paths and historical error information; calculating the model wind field for each path; using a GPU-accelerated storm surge model to drive parallel calculation of hourly storm surge rise fields and representative tide gauge station rise sequences under each path and determine their maximum total tide level; simultaneously calculating the minimum geometric distance between each pre-divided cell and all typhoon paths; selecting target floodplain cells based on three indicators: maximum storm surge rise, maximum total tide level, and minimum typhoon distance; extracting open-boundary driving data of the target cells from the regional rise field to calculate the storm surge floodplain results for each target cell; and finally integrating the results of all target cells to output the final floodplain calculation result. This method achieves a high-precision and high-efficiency operational rapid forecast.

The invention relates to the technical field of high polymer material injection molding and automatic control, in particular to an intelligent injection molding parameter regulation and control system for an injection molding machine, which comprises a rheological digital twinning and feed-forward resolving unit, a wavefront position prediction unit and a control unit, the transient pulsation instruction generation unit is used for analyzing the wavefront position prediction information and superposing a high-frequency micro-amplitude pulsation instruction into the macroscopic injection speed instruction; the high-frequency shearing thermal injection and physical phase change unit is used for reducing the partial melt viscosity of the wavefront based on the high-frequency micro-amplitude pulsation instruction; the energy decoupling and state recovery unit is used for monitoring the execution state of the high-frequency micro-amplitude pulse instruction, so that the polymer melt is recovered to a high-viscosity state and is cooled and solidified; the self-adaptive regulation and control and optimization unit is used for quantifying the fine structure filling rate of the fine structure region and optimizing the transient pulsation generation strategy according to the wave-front speed fluctuation variance; according to the method, the robustness of complete recarving and long-term continuous production of the fine structure is ensured.