37results about How to "Clear impact" patented technology

The invention belongs to the technical field of aircraft elastic motion modeling, and specifically relates to an elastic motion modeling method of a trailing edge rudder gliding aircraft. The method comprises the following steps: (1) converting an elastic body transverse free vibration into superposition of various mutually independent main vibrations by utilizing modal orthogonality; (2) according to a linear small disturbance hypothesis, under the action of external forces, still describing the transverse vibration of an elastic body approximatively by utilizing modal superposition, and determining a vibration mode function by structural characteristics (rigidity and quality distribution) of the elastic body and a boundary condition of the elastic body; (3) establishing a vibration differential equation according to the d'almbert's principle and other methods; and (4) analyzing the external forces, which comprise an aerodynamic force, a rudder surface control force, a posture jet pipe control force, a rudder surface swinging inertia force and the like, influencing an elastic vibration of the gliding aircraft. A traditional elastic motion modeling method is corrected and improved.

The invention provides a water transport and distribution pipe network water quality detection system comprising a water quality blending module, a water transport and distribution pipe network simulating module, a power module, a control and metering module, and a control unit. The water quality blending module is used for blending test water with different water quality parameters. The water transport and distribution pipe network simulating module simulates water supply pipelines of a water supply network, and comprises water pipelines, water values, butterfly valves, and detection ports, wherein the water values, the butterfly valves, and the detection ports are arranged on the water pipelines, and the water pipelines are totally enclosed and are distributed in a symmetric dual-snakelike shape. The power module is used for controlling the water speed and the water pressure of the water transport and distribution pipe network simulating module. The control and metering module comprises a water quality parameter data acquisition device and is connected with the detection ports in order to detect the water quality parameters of the water in the water pipeline. The control unit, according to the water quality parameter data monitored by the water quality parameter data acquisition device, controls the water quality blending module to blend test water with a water quality characteristic close to that of finished water or water transported and distributed in the pipe network. The power module performs control in order that the test water cycles in the water pipeline according to set pressure and flow and the test water is regularly sampled and detected.

The invention discloses an imaging satellite task planning method considering meteorological information. The method comprises the following steps of loading meteorological data information in a future predetermined time; calculating visible time windows of all to-be-arranged observation tasks of an imaging satellite; obtaining a core stripe of a to-be-observed region; generating a task pre-planning scheme according to the meteorological data information and core stripe data; loading latest meteorological forecast data in a day before a work plan is sent to the satellite; and determining a final task planning scheme according to the latest meteorological forecast data. An assessment method for judging whether a cloud layer causes shielding to satellite imaging or not has the advantages of simplicity, a relatively small calculation amount and a high calculation speed.

The invention belongs to the technical field of mechanical dynamics, and particularly relates to a meshing characteristic analysis method of stripping bevel gear pair which is corrected by considering substrate rigidity. According to the method, firstly the gear tooth of a bevel gear pair is divided into N independent and uniform thin-sheet straight gears in the tooth width direction, and based on the known stripping size and position parameters, the stripping condition of each straight gear is determined; through a potential energy method, a finite element substrate rigidity correction coefficient is introduced to calculate the time-varying meshing rigidity of each single stripping straight bevel gear; based on ANSYS software parameterized programming, a three-dimensional finite element stripping bevel gear contact model is established, the time-varying meshing rigidity is solved and obtained, and analysis and comparison with an analysis method result are conveniently achieved. Based on an analysis and finite element solution method, the influence of the stripping width ws, the stripping length as, the stripping axial position and the stripping tooth-direction position on the bevel gear time-varying meshing rigidity is analyzed, and the influence of axial multi-stripping and tooth-direction multi-stripping on the bevel gear meshing rigidity is considered at the same time.

The invention discloses a turbulence combustor capable of generating multi-scale controllable flow field . The combustor comprises a fuel air supply and mixing device and a multi-layer pore plate device for generating a multi-scale controllable flow field. A vertical arrangement form is adopted in the whole device, air and fuel enter through the air inlet pipe when the device works, the collisionplates and the sintered metal porous material can be fully premixed, and meanwhile tempering is prevented, then the premixed gas forms a controllable flow field through a turbulence generating pore plate, and finally a premixed turbulent flame with a stable controllable flow field is formed at an outlet ignition. The turbulence generating pore plate of the device adopts four-layer design, and single-layer or multi-layer pore plate combinations can be designed according to actual requirements, so that needed different strength and scale turbulence fields are generated, the device has the advantages that an excellent turbulence control effect can be achieved, the structure is compact, the processing is convenient, and the working is safe and reliable.

The invention belongs to the technical field of traditional Chinese medicines, discloses a drug for inducing bone marrow mesenchymal stem cell (MSC) differentiation to cardiomyocyte and a detection method thereof. The method includes: preparation of drug serum of Zhejiang radix ophiopogonis; preparation of cardiomyocyte extraction solution and lysate; separation and culture of rat MSCs; identification of surface markers of rat MSCs by a flow cytometer; culture of rat MSCs; detection of the expression of cardiomyocyte-associated proteins CTnI and CX43 by immunofluorescence; and detection of theexpression of NKx2.5, GATA-4 and beta-MHC mRNA by a qPCR method. The method disclosed by the invention establishes a high-efficiency and systematic research mode for batch searching and research of traditional Chinese medicine with potential inducibility, lays a foundation for perfecting the screening and development system of traditional Chinese medicine inducer, provides a new idea for the research of traditional Chinese medicine induction, has great significance for improving the success rate of autologous transplantation of MSCs, reducing the mortality of patients, and preventing the occurrence and development of diseases such as coronary heart failure.

The invention relates to a median filtering detection method based on a PCA network, and belongs to the information safety and digit image information processing technical field; the method comprises model building and target detection parts; the model building part comprises the following steps: 1, selecting an image and extracting materials; 2, filtering extracted material median so as to obtain the filtered material; 3, using the materials outputted by step 1and step 2 as a training set, and calculating a median filtering residual error; 4, building the PCA network; 5, training a support vector machine so as to obtain a trained model. The target detection part comprises the following steps: A, cutting a to-be-detected image into small size images; B, inputting small size images outputted by step A into the built model, determining whether median filtering treatment is finished or not according to the model output, and deciding whether to jump to step C; C, marking the image block with the median filtering treatment in A, and jumping to B. The method is simple in structure, short in training time, less in artificial setting parameters, suitable for various image sets, can be conveniently realized on a FPGA, thus greatly improving the operation speed.

The invention belongs to the technical field of biological detection, and discloses a cell communication analysis method based on immune cells of a patient with primary sicca syndrome. The cell communication analysis method comprises the following steps: separating immune cells in peripheral blood of the patient, preparing a single-cell suspension, carrying out single-cell transcriptome sequencing, and finally analyzing an intercellular communication mode by using CellChat software. According to the analysis method provided by the invention, the known structural composition of ligand-receptor interaction is fully considered, cell communication is combined with a cell function pathway, and then single cell transcriptome sequencing is combined for comprehensive analysis; a brand new thought is provided for searching treatment targets of diseases related to the primary sicca syndrome and exploring a regulation and control mechanism between cell communication and cell biological functions.

The invention discloses a device and a simulation method for simulating the influence of high-temperature heat-conducting components on fire extinguishing, comprising: a container, a heat-conducting component, a fire-extinguishing device and a monitoring device. One end of the container is open, and the container carries a layer of combustible liquid. The layer of combustible liquid is combustible in the air, and a flame is formed when the layer of combustible liquid is burned. The heat-conducting member is arranged in the container, a portion of the heat-conducting member is located in the combustible liquid layer, and a portion of the heat-conducting member extends to the flame. The fire extinguishing device is used to extinguish the flame in the container. The monitoring device is used to monitor the status information in the combustible liquid layer and / or the heat conducting member. In the device of the embodiment of the present invention, the heat-conducting member heated by the flame can simulate the high-temperature heat-conducting member at the fire scene, and the monitoring device can monitor the combustion and fire-extinguishing conditions of the combustible liquid layer in real time, and can also monitor the physical state of the heat-conducting member to reproduce the existence of high temperature The influence of heat-conducting components on the fire and extinguishing process of storage tanks can provide rescue guidance.

The invention relates to a protective device and method of a hot rolled strip steel lower surface detecting device and belongs to the technical field of hot rolled strip steel production devices of the metallurgical industry. According to the technical scheme, a roller bed overturning plate (2) is arranged between a conveying roller bed A (20) and a conveying roller bed B (30), a detecting camera(12) and an imaging light source (13) are arranged in a glass protective cover (16), the strip steel lower surface detecting device is arranged below the roller bed overturning plate (2), a protectiveplate (5) is arranged below the conveying roller bed A (20), a protective plate water discharge opening (6) is arranged on the protective plate (5), a water accumulating groove (7) is arranged belowthe conveying roller bed B (30), a high-pressure air spray nozzle (11) is arranged below the protective plate (5), a roller bed roller groove (3) is arranged below a conveying roller in the conveyingroller bed B (30). The protective device and method of the hot rolled strip steel lower surface detecting device has the beneficial effect that the situation that cooling water is splashed to the glass protective cover of the strip steel lower surface detecting device, so that clearness of the imaging view field of the camera is influenced is avoided.

The invention is directed to obtain a colored sanitary tissue paper giving a bright feeling in spite of modest color. The invention provides a colored sanitary tissue paper with a color difference between before and after dyeing of 15 or more in D value of Hunter's color difference formula defined in JIS Z 8730; D=(ΔL2+Δa2+Δb2)1 / 2.

The invention relates to the technical field of ultra-precision machining, in particular to an ultra-precision cutting machining surface roughness online measuring method and system. First, a machining process signal is read. Secondly, calculating the weight of the processing process signal; the processing process signals are weighted according to the weights, and the weighted processing process signals are fused to serve as first input data; the machining process signal is used as additional input data. Then, obtaining a first input result and an additional input result according to the first input data and the additional input data, and obtaining a first fusion result according to the first input result and the additional input result; thirdly, inputting a high-dimensional feature fusion branch according to the first fusion result and additionally extracted first high-dimensional feature information and additional high-dimensional feature information to obtain a second fusion result; and finally, obtaining a surface roughness measurement result. According to the method, surface roughness prediction of ultra-precision cutting machining is more accurate.

The invention discloses a method for researching the influence of S100A9 on AQP4 and an influence mechanism of the S100A9, and relates to the technical field of biomedicine. Comprising the following steps: cell culture; the method comprises the following steps: inoculating U251 astroglioma cells or SD (Sprague Dawley) rat primary astroglioma cells into a culture dish, after the cells are completely adhered to the wall, replacing a culture medium containing S100A9 proteins with different concentrations, and continuously culturing for 12 hours; the cell activity is detected through CCK8; and adding a CCK8 reagent into the culture dish, incubating for a period of time, and detecting the activity of each group of cells. The invention provides a systematized and detailed research method, and the influence of the S100A9 on the AQP4 can be clarified; through the experimental steps of cell culture, CCK8 detection, Western Blot, RT-qPCR and the like, the change of the S100A9 on the expression and positioning of the AQP4 under different concentrations can be comprehensively known.

The invention relates to an ionospheric total electron content long-term change analysis method. Firstly, the influence of solar activity, geomagnetic activity and neutral atmospheric components is considered, a model of ionospheric total electron content changing with time is established on the basis, then an equation set is established by utilizing ionospheric total electron content long-term observation results obtained by a global observation system, and model coefficients are calculated; and further calculating the correlation between the model value and the observed value by utilizing the long-term total electron content observed value of the ionized layer, and taking the correlation as the evaluation standard of the model precision. And performing model correlation analysis on the long-term observation value of the total electron content of the multi-source ionospheric layer, and judging the action weight of each influence factor on the long-term change of the total electron content of the ionospheric layer. And respectively analyzing different regions in the world, and judging the difference of the total electron content of the ionized layer of each region along with the time change. The method can be used for effectively analyzing the long-term change of the total electron content of the global ionized layer.

A method for predicting steady-state productivity of vertical wells in asphaltene precipitation reservoir includes such steps as: dividing the mass fraction of asphaltene dissolved in crude oil into four stages according to the test results of typical formation crude oil samples in laboratory; according to the laboratory test results, establishing the mathematical expressions of asphaltene precipitation law for four stages of asphaltene isothermal precipitation; based on the classical power-law and exponential pore-permeability relations and the mathematical expression of asphaltene precipitation law, establishing the prediction model of reservoir rock percolation capacity. A mathematical model of isothermal steady percolation in vertical wells of asphaltene precipitation reservoir is established and solved according to the power law pore-permeability relation. The mathematical model of isothermal steady percolation in vertical wells of asphaltene precipitation reservoir is established. Based on the exponential porosity-permeability relationship, a mathematical model of isothermal steady percolation in vertical wells of asphaltene precipitation reservoirs is established and solved.The invention realizes the steady-state productivity prediction of the reservoir vertical well on the basis of considering the influence of asphaltene precipitation on the reservoir percolation ability and the fluid property.

The invention provides a water quality detection system of a water transmission and distribution pipe network, which includes: a water quality modulation module, which is used to deploy test water for different water quality parameters; a water distribution pipe network simulation module, which simulates the water supply pipes of the water supply pipe network, including water pipes and water pipes The water intake valve, butterfly valve, exhaust valve and detection port on the water pipe are fully enclosed and symmetrically distributed in a double serpentine shape; the power module is used to control the water flow velocity and water flow pressure of the water transmission and distribution pipe network simulation module; the control and metering module , including water quality parameter data acquisition equipment, which is connected with the detection port to detect the water quality parameters of the water in the water pipeline; the control unit, according to the water quality parameter data monitored by the water quality parameter data acquisition equipment, controls the water quality deployment module modulation and factory water or pipe network The test water with similar water quality characteristics is transported and distributed in the middle, and the power module is used to control the test water to circulate in the water pipeline according to the set pressure and flow rate, and samples are taken regularly for testing.

A method for determining printing parameters of a printing press, in particular a flexographic printing press, comprises the following steps: First, a printing plate (12) is provided and mounted on a printing cylinder (14). At least one high-resolution image of the surface of the printing plate (12) is then recorded by means of a 3D camera (18). A height profile of the printing plate (12) is determined on the basis of at least one high-resolution image, and a simulated printing image is then calculated on the basis of the height profile and initial settings of printing parameters. Finally, the optimized printing parameters are determined by checking and / or changing the initially set printing parameters. For this purpose, after the printing parameters have been changed, the simulated printing image is calculated again. Additionally, a test bench is specified on which this approach can be performed.

The invention relates to a method for analyzing the long-term change of the total electron content of the ionosphere. First, the influence of solar activity, geomagnetic activity and neutral atmospheric components is considered, and on this basis, a model of the total electron content of the ionosphere changes with time is established, and then the global observation is used to The long-term observation results of the ionospheric total electron content obtained by the system establish a system of equations and calculate the model coefficients; further use the long-term observations of the ionospheric total electron content to calculate the correlation between the model value and the observed value, and use it as an evaluation of the model accuracy standard. The model correlation analysis is carried out on the long-term observations of the multi-source ionospheric total electron content, and the weight of each influencing factor on the long-term change of the ionospheric total electron content is judged. The above analysis is carried out on different regions of the world, and the differences in the total electron content of the ionosphere over time in each region are judged. This method can effectively analyze the long-term changes in the total electron content of the global ionosphere.

Disclosed are a method for determining print parameters of a printing machine and a test bench. The method includes the following steps: first, providing a printing plate (12) and installing the plate on a printing cylinder (14), then, recording at least one high-resolution image of the surface of the printing plate (12) by means of a 3D camera (18), determining the height profile of the printing plate (12) on the basis of at least one high-resolution image, then, based on the initial settings of the height profile and printing parameters, calculating the simulated printing image, finally, by checking and / or changing the initially set printing parameters, determining the optimized printing parameters. For this purpose, after the printing parameters have been changed, the simulated printing image is calculated again.In addition, the test bench on which the method can be executed is specified.

The invention discloses a method for researching the influence of epoxy resin on SF6 trace products under a discharge condition and belongs to the technical field of electric power. According to the epoxy resin-based SF6 trace product detection method, an isotope-labeled epoxy resin material part is replaced into SF6 gas insulation equipment, after a discharge test is carried out, variety and content change of isotope-containing substances in the SF6 gas trace product are measured by using detection equipment, the research on the SF6 trace product influence of the epoxy resin under the discharge condition is realized. According to the method, a problem that the sources of C, H and O elements in the SF6 trace product are unknown at present is solved, and the influence rule of the epoxy resin material on the SF6 trace product can be directly verified by using an isotopic tracer method. The research method provided by the invention can provide key and reliable data support for research on fault diagnosis and electric life evaluation of the SF6 gas insulation equipment by using a component analysis technology.

The invention is a median filter detection method based on the PCA network, which is the field of information security and digital image information processing technology.Including two parts: model establishment and target detection; the model establishment steps are: 1 select the picture extraction material; 2 to 1 extracted material filtering to be filtered after processing; 3 materials that output 1 and 2 are used as training sets, calculated to calculateMid -value filtering residual; 4 Establish a PCA network; 5 training support vector machines to be trained; the target detection steps are: A will cut the picture to be tested as a small size image;Determine whether the model output is filtered by the medium value, and decide whether to jump to C; C is bid in A in A in the median filtering, jump to B.The invention is simple, the training is short, the artificial setting parameters are small, it can be suitable for a variety of picture sets, and it can even be easily implemented on FPGA, which significantly improves the operation speed.

The invention discloses a control method for vertical overlapping appearance of a cladding layer based on wettability. The method comprises the steps: firstly, forming a first cladding layer on a forming substrate, determining a parabolic fitting parameter by measuring the width and the height of the first cladding layer, determining the optimal layer height according to the fitting parameter, andthen forming a second cladding layer on the premise that the wetting condition of the cladding layers is kept stable according to the fitting parameter, so that the overlapping appearance from the first cladding layer to the second cladding layer is controlled; and taking the second cladding layer as a new cladding layer, controlling the overlapping appearance of the new cladding layer until thevertical overlapping is finished, and controlling the vertical overlapping appearance of the cladding layer. According to the control method for the vertical overlapping appearance of the cladding layer based on the wettability, the control effect on the vertical overlapping appearance of the cladding layer is consistent with the actual situation, the accuracy is high, and a better vertical overlapping effect of the cladding layer can be realized.

The invention belongs to the technical field of aircraft elastic motion modeling, and specifically relates to an elastic motion modeling method of a trailing edge rudder gliding aircraft. The method comprises the following steps: (1) converting an elastic body transverse free vibration into superposition of various mutually independent main vibrations by utilizing modal orthogonality; (2) according to a linear small disturbance hypothesis, under the action of external forces, still describing the transverse vibration of an elastic body approximatively by utilizing modal superposition, and determining a vibration mode function by structural characteristics (rigidity and quality distribution) of the elastic body and a boundary condition of the elastic body; (3) establishing a vibration differential equation according to the d'almbert's principle and other methods; and (4) analyzing the external forces, which comprise an aerodynamic force, a rudder surface control force, a posture jet pipe control force, a rudder surface swinging inertia force and the like, influencing an elastic vibration of the gliding aircraft. A traditional elastic motion modeling method is corrected and improved.

The invention provides a virtual interconnection isolation system and an industrial control virus analysis method, each industrial control virtual machine is respectively connected with a switch, the switch distributes a second VLAN identifier for each industrial control virtual machine, the second VLAN identifiers of the industrial control virtual machines are different, the second VLAN identifier of each industrial control virtual machine is not public to other industrial control virtual machines, and the virtual interconnection isolation system and the industrial control virus analysis method are provided. And each industrial control virtual machine is connected with the industrial control equipment corresponding to the industrial control system through the second VLAN identifier of the industrial control virtual machine, so that when the industrial control system operates the virus software, the industrial control equipment can participate in the operation process of the virus software, behavior data during the operation of the virus software is analyzed, and the influence of the virus on the industrial control equipment can be clarified. Moreover, the communication isolation between the industrial control devices can be ensured in the running process of virus software, the communication between the industrial control devices and the industrial control virtual machine is not influenced mutually, and other industrial control devices cannot be transversely infected by viruses.

The invention belongs to the technical field of mechanical dynamics, and in particular relates to a method for analyzing the meshing characteristics of a peeled helical gear pair taking into account matrix stiffness correction. The method first decomposes the helical gear pair teeth into N independent and uniform ones along the tooth width direction. For thin-sheet spur gears, based on the known spall size and position parameters, determine the spalling situation on each spur gear; use the potential energy method and introduce the finite element matrix stiffness correction coefficient to calculate the time-varying meshing stiffness of the single-chip spalled spur gear; based on ANSYS The software uses parametric programming to establish a three-dimensional finite element peeling helical gear contact model and solve it to obtain the time-varying meshing stiffness, which facilitates analysis and comparison with analytical method results. Based on analytical and finite element solution methods, the spalling width w was analyzed. s , peeling length α s , the influence of the axial position of spalling and the tooth-direction position of spalling on the time-varying meshing stiffness of the helical gear, while considering the influence of multiple axial spalling and multi-tooth spalling on the meshing stiffness of the helical gear.

The invention relates to the technical field of network operation and maintenance, and discloses a network jitter diagnosis method and device, equipment and a medium. The method comprises the following steps: when a data packet is confirmed to be delivered, calculating network jitter data; embedding the network jitter data into the service calling link data to obtain embedded link data; and carrying out jitter root cause analysis on the embedded link data to obtain a network jitter diagnosis result. According to the embodiment of the invention, the network jitter can be accurately associated with the affected user, and the influence of the network jitter on the service is clear.

The present application relates to the technical field of construction safety management, and discloses a construction safety penetration type management multi-stage linkage early warning system.The system comprises a management layer, an execution layer and a work layer node.The management layer generates a global safety strategy, the execution layer decomposes and issues tasks, and the work layer collects on-site multi-modal safety data, including equipment vibration characteristics, environmental image flow, personnel positioning trajectory and safety operation records.The system first analyzes the changes in equipment vibration characteristics, divides stable and abnormal working condition periods, and selects high-risk areas according to the difference amount;in each high-risk area, the safety state deviation of the work layer node is calculated in combination with the task identifier and the environmental image flow;then, the responsibility trace weight is generated according to the spatio-temporal correlation and deviation of the personnel trajectory and operation record in the abnormal period;finally, the root node is selected according to the weight, multi-modal data is associated to construct a safety risk propagation tree, and multi-stage linkage precise safety management is realized.

The invention belongs to the field of biological medicine, and discloses a new application of panax notoginseng saponins, metabonomics research and immunohistochemical experiments find that the panax notoginseng saponins can increase the levels of neurotransmitters 5-HT, DA and NE in rat hippocampus and up-regulate BDNF and CREB protein expression, and can be used for preparing post-stroke depression drugs. In addition, the improvement effect of the panax notoginseng saponins on the depression of the PSD rats is explored from the perspective of metabolite change; the method comprises the following steps: performing KEGG pathway enriched bioinformatics analysis on differential metabolites to obtain related metabolic pathways regulated by the panax notoginseng saponins, and discussing the regulating effect of the panax notoginseng saponins on the PSD related metabolic pathways, thereby providing a certain scientific basis for treating the PSD by the panax notoginseng saponins.