The present invention provides a high-pressure multi-atmosphere assisted SLM gradient material preparation method, and an aluminum-lithium alloy coating. The method comprises the following steps: injecting a first mixed gas into a working chamber; by means of laser irradiation, causing a molten material in a micro-molten pool to react with a carbon-containing active gas, to form a first gradient aluminum-lithium alloy coating doped with carbides; injecting a second mixed gas into the working chamber; by means of laser irradiation, causing the molten material in the micro-molten pool to react with a carbon- and nitrogen-containing active gas, to form a second gradient aluminum-lithium alloy coating doped with carbonitrides; injecting a third mixed gas into the working chamber; by means of laser irradiation, causing the molten material in the micro-molten pool to react with a nitrogen-containing active gas, to form a third gradient aluminum-lithium alloy coating doped with nitrides. The present invention improves the surface forming quality of aluminum-lithium alloy materials, while achieving the overall material performance of being hard on the outside and tough on the inside.
The present invention provides an ultra-high precision pneumatic force servo system and an intelligent control parameter optimization method therefor. The pneumatic force servo system is mainly composed of a double-acting air-floating frictionless cylinder and a pressure control system; the effect of friction on the control accuracy can be removed by using the air-floating frictionless cylinder; the pressure control system achieves ultra-high precision control of pressure by means of a fuzzy PI controller optimized on the basis of a novel improved particle swarm algorithm; a Gaussian variation strategy and a fuzzy control theory are integrated in the novel improved particle swarm algorithm; optimized fuzzy PI control parameters are obtained using the novel improved particle swarm algorithm and ultra-high precision pressure control of a chamber of the air-floating frictionless cylinder is performed on the basis of the parameters, such that ultra-high precision force output of the system can be achieved; the pneumatic servo system provided by the present invention can be applied to occasions where high control accuracy of force is required, expanding the application range of the pneumatic servo system.
F15B 13/04 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
3.
TARGET ASSIGNMENT AND ROUTE PLANNING METHOD FOR MULTI-AGENT UNMANNED SURFACE VEHICLE
A target assignment and route planning method for a multi-agent unmanned surface vehicle. The method comprises: sending task information to a task assigner (S1); performing screening to obtain targets to be assigned and unmanned surface vehicles to be subjected to assignment, and assigning one target to each of the unmanned surface vehicles on the basis of the comprehensive distance between the target and the unmanned surface vehicle, which comprehensive distance is obtained by taking a navigation distance and a steering penalty into consideration (S2); a route planner generating as a navigation route a smooth waypoint sequence for the matched unmanned surface vehicle and target (S3); and during navigation, a navigation controller constructing a speed optimization model on the basis of cooperative obstacle avoidance and sea area constraint requirements, and controlling, in real time, the unmanned surface vehicle to navigate along the waypoint sequence (S4).
An efficient reed harvester, including a preharvest detection unit, a cutting device, a conveyor device, a baling-stacking device, a chassis, and a control unit, where the preharvest detection unit is configured to detect height information of reeds in a preharvest region, and transmit to the control unit; the conveyor device is configured to gather and clamp stems of the reeds, and convey the stems backward to the baling-stacking device; the control unit is configured to calculate an average height havg of the reeds in the preharvest region according to the height information of the reeds in the preharvest region, and adjust a height of the conveyor device according to the average height of the reeds; and the control unit is configured to control the baling-stacking device to stack the small bales of reeds vertically or horizontally, and knot the small bales of reeds into the big bale.
Disclosed in the present invention are a hyperoside mixed micelle, a preparation method therefor, and use thereof. The hyperoside polymer mixed micelle comprises: hyperoside, TPGS, and F68. The polymers TPGS and F68 are used as carriers for the mixed micelle to encapsulate the hyperoside therein. The hyperoside mixed micelle of the present invention can effectively increase the solubility of the hyperoside, thereby improving its oral bioavailability, reducing adverse drug reactions, and enhancing the therapeutic efficacy against ulcerative colitis.
A61K 31/7048 - Compounds having saccharide radicals and heterocyclic rings having oxygen as a ring hetero atom, e.g. leucoglucosan, hesperidin, erythromycin, nystatin
A61K 47/34 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
A61P 1/04 - Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
A61P 1/00 - Drugs for disorders of the alimentary tract or the digestive system
6.
PINOCEMBRIN POLYMER MICELLE FOR RESISTING HYPERURICEMIA AND METHOD FOR PREPARING SAME
Provided are a pinocembrin polymer micelle for resisting hyperuricemia and a method for preparing same. The pinocembrin polymer micelle comprises 4%-18% of pinocembrin, 33%-53% of Pluronic F-127, and 31%-56% of vitamin E polyethylene glycol succinate. The flow rate ratio of the continuous phase to the dispersed phase for the microfluidic preparation of the pinocembrin polymer micelle is 1: 11-1: 10. The continuous phase is a solution of Pluronic F-127 and vitamin E polyethylene glycol succinate in methanol, and the dispersed phase is double-distilled water.
A61K 9/00 - Medicinal preparations characterised by special physical form
A61K 31/352 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. cannabinols, methantheline
A61K 47/34 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
A61P 19/06 - Antigout agents, e.g. antihyperuricemic or uricosuric agents
7.
MODIFIED POLYPHENYLENE SULFIDE (PPS) AND PPS MODIFICATION METHOD, PPS SOLID SEPARATOR, PREFABRICATED ZINC SALT SEPARATOR AND MANUFACTURING METHOD THEREOF, TO-BE-FILLED ZINC-MANGANESE SECONDARY BATTERY, AND MANUFACTURING AND APPLICATION METHODS THEREOF
Modified polyphenylene sulfide (PPS) and a PPS modification method, a PPS solid separator, a prefabricated zinc salt separator and a manufacturing method thereof, a to-be-filled zinc-manganese secondary battery and a manufacturing method, a formation method and an application method thereof are provided. Through hydrothermal synthesis, tetrachlorobenzoquinone in PPS powder undergoes a dechlorination and hydrogenation reaction to form molecules with a chlorocatechol structure, to improve the adsorption performance of the PPS solid separator towards harmful molecules. Moreover, in combination with the protection of welding spots during the battery assembly process, and a formation method involving injection of an aqueous electrolyte solution followed by alcohol during the formation process, the cycling stability of the battery is improved and the service temperature range of the battery is broadened.
H01M 50/124 - Primary casingsJackets or wrappings characterised by the material having a layered structure
H01M 50/131 - Primary casingsJackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
H01M 50/403 - Manufacturing processes of separators, membranes or diaphragms
H01M 50/457 - Separators, membranes or diaphragms characterised by the material having a layered structure comprising three or more layers
H01M 50/489 - Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
Wenling Fluid Machinery Technology Institute of Jiangsu University (China)
Jiangsu University (China)
Taizhou Vocational College of Science & Technology (China)
Inventor
Zhang, Jinfeng
Cao, Puyu
Shen, Zhenhua
Wang, Chao
Li, Guidong
Abstract
The present invention discloses a fire pump for a fire fighting system, the fire pump including a pump body (1), a motor (2), a transmission assembly (3), a water inlet pipe (4), a water outlet pipe (5), and a display instrument (6). The pump body is a centrifugal pump, and the pump body includes a volute, an impeller (11), and a diffuser (12). The impeller includes a plurality of blades (13) distributed along a circumferential direction, and the diffuser includes a plurality of guide blades (14) distributed along a circumferential direction, where the diffuser has a geometric center O1, the impeller has a geometric center O2, and the geometric center O1 and the geometric center O2 are not concentric and have a deviation (Y1, X1); and the plurality of guide blades of the diffuser are distributed along the circumferential direction at unequal intervals.
2+ capture probe to prepare a detection probe; and dropwise adding the detection probe onto a central area of a paper-based substrate to obtain the flexible paper-based sensor. A method for detecting tetracycline residues in meat products using such sensor is also provided.
The present disclosure provides a mechanical-electrical-hydraulic composite transmission device and a control method thereof. The device includes an input shaft assembly, a power-split assembly, a hydraulic transmission assembly, an electrical variable transmission assembly, a mechanical transmission assembly, a power-convergence assembly, and an output shaft. Three types of transmission modes including single transmission modes, power-split composite transmission modes, and power-convergence composite transmission modes are implemented by controlling engagement and disengagement of clutches and a brake. The present disclosure has the following beneficial effects: Free switching between various transmission modes is realized, the requirements of engineering machinery for a transmission device with multiple modes in different working conditions are satisfied, the engine power utilization is improved, and the fuel economy is increased. The shift impact is effectively reduced and the speed ratio adjustment range is expanded. The hydraulic transmission enables quick startup and stable operation and implements speed variation and direction change easily and rapidly without causing impact. The electrical variable transmission has a continuously changing transmission ratio and causes extremely small impact on the mechanism during operation.
F16H 61/26 - Generation or transmission of movements for final actuating mechanisms
F16H 47/04 - Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
F16H 61/00 - Control functions within change-speed- or reversing-gearings for conveying rotary motion
F16H 61/40 - Control of exclusively fluid gearing hydrostatic
F16H 61/686 - Control functions within change-speed- or reversing-gearings for conveying rotary motion specially adapted for stepped gearings without interruption of drive with orbital gears
11.
FISH GUIDING DEVICE FOR PUMP AND PUMP STATION FOR AXIAL FLOW PUMP/TUBULAR PUMP
A fish guiding device for a pump, and a pump station. The fish guiding device for a pump comprises an axial flow pump blade (11) located in a runner chamber (15), wherein a fish guiding ring (2) mounted on a wall surface of the runner chamber (15) is provided at an inlet of the axial flow pump blade (11), and a fish guiding cap (3) is mounted on a hub (13) of the axial flow pump blade (11); a number of jet flow holes (23) are provided in the fish guiding ring (2), and are configured to guide fishes to the fish guiding cap (3) by forming a jet flow; and a number of fish guiding grooves (31) are provided in the surface of the fish guiding cap (3). The fish guiding device for a pump can enable fishes to enter a flow channel of an axial flow pump, such that the survival rate of the fishes is increased, and the fishes can smoothly flow through the axial flow pump.
A reed whole stalk harvesting upright clamping-longitudinal conveying system, comprising an upright clamping-longitudinal conveying device (101), a clamping-conveying chain height adjusting mechanism (105) and a control unit (7). A pre-cutting measurement unit is used for measuring height information of reeds in a region before cutting and transmitting the height information to the control unit (7); a position sensor is used for measuring a current height of the upright clamping-longitudinal conveying device (101) and transmitting the current height to the control unit (7); a height-adjustment device is connected to the upright clamping-longitudinal conveying device (101); and the control unit (7) calculates an average height of the reeds in the region before cutting and a height of the center of gravity of the reeds, calculates a height difference between the height of the center of gravity of the reeds and the current height of the upright clamping-longitudinal conveying device (101), and adjusts the position of the upright clamping-longitudinal conveying device (101) to correspond to the center of gravity of the reeds in the region before cutting. Thus, the conveying device can be adapted to different reed heights by means of height adjustment, and the reeds can be reliably and neatly clamped and conveyed, thereby improving the neatness of the reeds during reed conveying, and facilitating subsequent bundling and knotting. Also provided are a harvester comprising the conveying system and a control method for the conveying system.
Disclosed is a dual-mode W-band voltage-controlled oscillator based on transformer magnetic tuning, comprising two cross-coupled pairs of MOS transistors, a dual-mode six-coil transformer, a tuning switch fine tuning MOS transistor, a tuning switch coarse tuning MOS transistor, and two pairs of output buffer stage MOS transistors. Changes in the equivalent inductance value of a resonant cavity is achieved by controlling a fine tuning MOS transistor Msw1 and a fine tuning MOS transistor Msw2. The fine tuning MOS transistor Msw1 is open at a high frequency band having smaller inductance and is closed at a low frequency band having larger inductance. For fine frequency tuning without a varactor, changing the grid voltage of the fine tuning MOS transistor Msw2 changes the resistance thereof, thus achieving fine tuning of the equivalent inductance. In the invention a dual-mode six-coil transformer is used in place of a single-mode three-coil transformer to achieve a four-band W-band voltage-controlled oscillator. The present invention has a higher resonant cavity Q value, can achieve good phase noise, and provides a high-quality local oscillator signal source for a W-band signal transceiving front end.
A method for preparing an antibacterial and fresh-keeping fruit-packaging material through three-dimensional (3D) printing includes the following steps: dissolving gum arabic and pullulan separately in deionized water to obtain a gum arabic solution and a pullulan solution; subjecting a probiotic to cultivation, centrifugation, and resuspension to obtain a bacterial suspension; mixing the bacterial suspension, the gum arabic solution, and the pullulan solution to obtain a core layer solution; mixing polyvinyl chloride, a modifier, and a plasticizer to obtain a shell layer solution; injecting the shell layer solution and the core layer solution into two syringes, respectively; conducting coaxial 3D printing to finally obtain a coaxial 3D printing product with a core-shell structure; and conducting uniaxial 3D printing with the shell layer solution alone to form an outer layer on the coaxial 3D printing product to obtain the antibacterial and fresh-keeping fruit-packaging material with inner and outer layers.
C09D 5/14 - Paints containing biocides, e.g. fungicides, insecticides or pesticides
B29C 64/118 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
B33Y 70/10 - Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
B65D 81/24 - Adaptations for preventing deterioration or decay of contentsApplications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
B65D 85/34 - Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
C09D 105/00 - Coating compositions based on polysaccharides or on their derivatives, not provided for in groups or
C09D 127/06 - Homopolymers or copolymers of vinyl chloride
15.
DEVICE AND METHOD FOR RECYCLING SELECTIVE LASER MELTING GRADIENT POWDERS
The present disclosure provides a device and method for recycling selective laser melting gradient powders, which comprises an ultrasonic powder suction device, a vertical support frame, the first vacuum pump, a sealing device, the second rotary motor, a powder storage bag, a vacuum box, a vibrating screen, a waste bin, the second vacuum pump, a powder conveying pipe, a cooling device, a water tank, and a spiral powder conveying pipe. This invention effectively reduces the risk of metal powder explosion through the cooling device's cooling. By multiple vibration screenings, this invention screens out the optimal gradient powders. The structure of this invention is simple, highly controllable, with easy-to-implement operating conditions, effectively avoiding the mixing and adhesion of different powders, improving the recovery utilization rate of gradient powders, and enabling the manufacturing of gradient materials with different compositions. It reduces contact with air in vacuum operation, and avoiding health hazards to workers caused by direct contact with powders.
The present invention relates to the technical field of multi-phase motor control. Disclosed is a third harmonic injection fault-tolerant control algorithm for a dual three-phase permanent magnet synchronous motor under a one-phase open-circuit fault. In order to improve the torque output capability after open-circuit fault fault-tolerant operation of the dual three-phase motor, disclosed in the present invention is a phase-loss reduced-order fault-tolerant control strategy of the dual three-phase motor. The implementation of the method mainly comprises: 1. when a phase-loss fault occurs, connecting neutral points of two sets of three-phase windings to the midpoint of a bus capacitor; 2, constructing a new reduced-order fault-tolerant matrix; and 3, injecting third harmonics by means of a rotating synchronous coordinate system. According to the new reduced-order fault-tolerant matrix provided by the present invention, the fault-tolerant control strategy is operated, so that the utilization rate of a motor iron core can be increased, a fault-tolerant phase current peak value and winding copper loss are reduced, and the reliability of the motor during fault-tolerant operation is improved.
H02P 29/028 - Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the motor continuing operation despite the fault condition, e.g. eliminating, compensating for or remedying the fault
H02P 29/024 - Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
H02P 21/00 - Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
The provided are a federated reinforcement learning (FRL) end-to-end autonomous driving control system and method, as well as vehicular equipment, based on complex network cognition. An FRL algorithm framework is provided, designated as FLDPPO, for dense urban traffic. This framework combines rule-based complex network cognition with end-to-end FRL through the design of a loss function. FLDPPO employs a dynamic driving guidance system to assist agents in learning rules, thereby enabling them to navigate complex urban driving environments and dense traffic scenarios. Moreover, the provided framework utilizes a multi-agent FRL architecture, whereby models are trained through parameter aggregation to safeguard vehicle-side privacy, accelerate network convergence, reduce communication consumption, and achieve a balance between sampling efficiency and high robustness of the model.
B60W 50/08 - Interaction between the driver and the control system
B60W 60/00 - Drive control systems specially adapted for autonomous road vehicles
G05B 13/02 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric
The provided is a method and system for trajectory prediction based on Cro-IntentFormer. The method starts by preprocessing vehicle trajectory data collected by sensors to produce raw data suitable for model input. Vehicles are treated as nodes, and the distance between vehicles serves as the basis for determining whether there is an edge between two vehicle nodes. A physical relationship graph is constructed and, along with the raw data, input into a spatio-temporal feature extraction module to obtain the spatio-temporal features of the trajectory. The spatio-temporal feature matrix is then input into an intent prediction module to determine the predicted intentions of the vehicles. Based on the intent information output by the intent prediction module, a semantic relationship graph is reconstructed and input, along with the raw data, into the spatio-temporal feature extraction module to derive the semantic features of the trajectory.
Provided in the present invention is an interference-factor-based high-safety and stable control method for an onboard magnetically suspended flywheel battery system. The method comprises: in the case of a safe operating condition interference, obtaining the difference between a displacement reference signal and an actual displacement signal, and inputting the difference into a Butterworth-filter-fused fuzzy active disturbance rejection control module, so as to obtain control currents, wherein the control currents comprise a radial control current, a torsion control current and an axial control current; the radial control current and the torsion control current are subjected to Clark inverse transformation, and the axial control current is subjected to power amplification, and the three currents are then compensated for, such that a three-phase control current of a radial coil, a three-phase control current of a torsion coil, and a control current of an axial coil are obtained; the control currents control the corresponding coils, and are also input into a multi-information extended Kalman filtering prediction module, such that the actual displacement signal is output; and in the case of a dangerous operating condition interference, cutting off an output signal from an operating condition recognition and safety determination module. The present invention can improve the stability, robustness and anti-interference capability of a system.
Provided in the present invention are a three-phase flow and heat transfer coupling simulation method and system based on an IBM-VOSET-DEM. The method comprises: determining a computational domain and dividing the grid of the computational domain; initializing parameters; reconstructing a liquid-liquid interface; determining a fluid volume fraction at an (n+1)th moment; determining a boundary grid, and determining a signed distance function of a grid cell at an nth moment; determining an interface curvature of the grid cell of the interface; smoothing abruptly changing physical quantities of the interface; determining the surface tension of the interface; determining a fluid intermediate velocity; obtaining fluid volume fractions and fluid intermediate velocities of all of the grid cells in the computational domain; determining the velocity of a particle; determining the displacement of a pth solid particle at the (n+1)th moment and a solid volume fraction of the grid cell at the (n+1)th moment; determining the final velocity of the computational domain at the (n+1)th moment; and solving for a temperature and an interface heat flux density. In the present invention, a DEM soft-sphere model is used to calculate a collision force of a solid, such that microscopic motion information of a solid particle can be accurately obtained and tracked; and an interface heat flux density model is used to take the conjugate heat transfer effect of an interface into consideration.
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
G06F 119/08 - Thermal analysis or thermal optimisation
21.
SURROUNDING VEHICLE TRAJECTORY PREDICTION METHOD AND SYSTEM BASED ON CRO-INTENTFORMER AND INTEGRATED WITH VEHICLE DRIVING INTENT
Disclosed in the present invention are a trajectory prediction method and system based on Cro-IntentFormer and integrated with a vehicle driving intent. The method comprises: first, preprocessing vehicle trajectories collected by a sensor to obtain original data that meets a model input condition; constructing a physical relationship graph using vehicles as nodes and the distance between the vehicles as the basis for whether there is an edge between the two vehicle nodes, and inputting the physical relationship graph and the original data into a spatiotemporal feature extraction module to obtain spatiotemporal features of the trajectories; inputting a spatiotemporal feature matrix into an intent prediction module to obtain predicted intents of the vehicles; re-constructing a semantic relationship graph on the basis of intent information output by the intent prediction module, and inputting the semantic relationship graph and the original data into the spatiotemporal feature extraction module to obtain semantic features of the trajectories; and integrating the spatiotemporal features and the semantic features of the trajectories, and inputting the integrated features into a decoder to obtain predicted trajectories of surrounding vehicles. The present invention takes into consideration the similarity between trajectories of vehicles having similar behavior intents, improving the interpretability and the prediction precision of a model.
Jiangsu World High-Tech Agriculture Equipment Ltd. (China)
Inventor
Zhou, Maile
Chen, Xuegeng
Yin, Jainjun
Jiang, Weijun
Li, Tiaotiao
Wu, Guohui
Abstract
A baling mechanism of a cotton picker and a control system of the baling mechanism are provided. The baling mechanism of the cotton picker includes a fixed box and a movable box. A fixed rocker arm, a fixed rocker arm driving cylinder, a fixed roller system and a fixed baling belt are arranged in the fixed box, and the movable box is hinged with the fixed box. A movable rocker arm, a movable rocker arm driving cylinder, a movable roller system and a movable baling belt are arranged in the movable box. A cotton bale forming chamber is jointly enclosed and formed by the fixed baling belt and the movable baling belt. In this disclosure, a multi-way valve is used to control the flow rate of oil circuits where the fixed rocker arm driving cylinder and the rocker arm driving oil cylinder are located, respectively.
An economical optimization strategy construction method and system for lateral stability control of an electric vehicle, and a computer-readable storage medium are provided. The method includes: firstly constructing a lateral stability control system model with active allocation optimization to achieve the coordinational allocation between effective working areas of each part by means of a coordinational variable L; secondly, on the basis of the system model with active allocation optimization, designing a lateral stability controller under a model predictive control framework, where the designed objective function J makes the motion state of the vehicle track the expected value at steady state; and finally, considering the mapping relationship between the additional yaw moment and the coordinational variable L, constructing a three-dimensional surface, and analyzing the influence of the coordinational variable L, and determining the workflow of a regulator of the coordinational variable L.
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performanceAdaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
24.
DOPED COLLOIDAL METAL OXIDE QUANTUM WIRE AND PREPARATION METHOD THEREOF, GAS SENSOR, GAS SENSOR ARRAY AND USE THEREOF
Disclosed are a doped colloidal metal oxide quantum wire and a preparation method thereof, a gas sensor, a gas sensor array, and use thereof, which relate to the technical field of gas sensors. In the preparation method, a main metal precursor, a doped metal precursor, an alcohol solvent, and a fatty acid surfactant are mixed, and a resulting mixture is subjected to a solvothermal reaction, to obtain the doped colloidal metal oxide quantum wire, wherein a main metal element in the main metal precursor is selected from Sn, Zn, W, In, Mo, Fe, Co, Ni, and Cu; a doped metal element in the doped metal precursor is selected from V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ni and Cu; the doped metal element is different from the main metal element; and the solvothermal reaction is performed at a temperature of 150-300° C.
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
23233/ZnS composite material containing both cationic Bi defects and anionic S defects can be obtained. The composite material can inhibit the recombination of photogenerated electron-hole pairs and achieve an effective improvement in the photocatalytic reduction ability regarding carbon dioxide while improving the transfer rate of photogenerated charges.
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
C07C 1/12 - Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of carbon from carbon dioxide with hydrogen
The present invention belongs to the field of new biomedical materials, and specifically relates to an exosome-modified metal implant having immunomodulatory and osteoinductive functions, and a preparation method therefor and the use thereof. In the present invention, inspired by marine mussels, a mussel-derived adhesion polypeptide having a catechol group is designed by means of combining modification strategies of metal-phenol coordination chemistry with bioorthogonal click chemistry for a mussel-like adhesion molecule. An implant is modified by means of catechol/titanium coordination interaction, and linked to an azide-modified exosome so as to non-destructively modify the exosome on the surface of a medical metal implant material, resulting in an exosome-modified metal bone implant material; and the surface osteointegration efficiency of the implant material is improved by means of the immunomodulatory function and osteoinductive activity provided by the implant. A new technical method is provided for efficient modification of functionalized extracellular vesicles on the surface of a metal implant, which method has a profound effect especially on improving the survival rate of prosthetic implants in diabetic patients, and has broad prospects in the medical field.
A method for recovering a protein from a surimi-rinsing liquid based on a low-temperature plasma technology is provided. The method includes: collecting fish flesh, and chopping the fish flesh to obtain surimi; adding the surimi to water, mixing for rinsing, centrifuging to collect a supernatant, which is the surimi-rinsing liquid; adjusting an input power of a plasma device to 300 W to 800 W, placing a spray gun of the plasma device below a liquid level of the surimi-rinsing liquid, turning on a power supply, and exciting plasma with air as a gas source, such that the plasma acts evenly on the surimi-rinsing liquid for 2 min to 6 min; and allowing the low-temperature plasma treated surimi-rinsing liquid to stand in an environment with a temperature of 10° C. or lower, centrifuging to collect a precipitate, such that the recovery of the protein from the surimi-rinsing liquid is completed.
C07K 14/46 - Peptides having more than 20 amino acidsGastrinsSomatostatinsMelanotropinsDerivatives thereof from animalsPeptides having more than 20 amino acidsGastrinsSomatostatinsMelanotropinsDerivatives thereof from humans from vertebrates
C07K 1/36 - ExtractionSeparationPurification by a combination of two or more processes of different types
28.
DOUBLE HETEROSTRUCTURE MATERIAL, AND PREPARATION METHOD THEREFOR AND USE THEREOF
A shape follow-up support device for selective laser melting and a method thereof are provided. The device includes a lifting base, where the lifting base is provided with an inner cavity, and a top wall of the lifting base is provided with multiple first through holes communicated with the inner cavity of the lifting base, and the multiple first through holes are arranged at equal intervals. Multiple driving assemblies are arranged in the lifting base; output ends of the driving assemblies extend out of the lifting base through the first through holes and are provided with support rods, and protruding ends of the support rods are detachably connected with sacrificial assemblies. A porous substrate is provided with multiple second through holes, and the multiple second through holes are in one-to-one correspondence with the multiple first through holes and communicate with the multiple first through holes.
The present invention belongs to the technical field of tissue damage repair, and particularly relates to a conductive hydrogel mediated by an aminated graphene quantum dot, and a preparation method therefor and the use thereof. The conductive hydrogel mediated by an aminated graphene quantum dot provided by the present invention comprises hydrogel obtained by photocuring acrylamide monomers and aminated graphene quantum dots dispersed in the hydrogel; the percentage of the mass of the aminated graphene quantum dots to the mass of the acrylamide monomers is ≤ 0.3%. When the conductive hydrogel provided by the present invention is combined with an exogenous electrical stimulation, an external current is applied to a wound to simulate an endogenous current at the wound, so that dermal fibroblasts (DFs) are guided to migrate along an electrical gradient to the wound and proliferate to stimulate tissue growth, thereby accelerating the healing of the wound.
A61L 26/00 - Chemical aspects of, or use of materials for, liquid bandages
A61L 15/32 - Proteins, polypeptidesDegradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin
A61L 15/18 - Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing inorganic materials
A61L 15/42 - Use of materials characterised by their function or physical properties
31.
CONFORMAL SUPPORTING DEVICE AND METHOD FOR SELECTIVE LASER MELTING
The present invention relates to the technical field of metal additive manufacturing. Disclosed are a conformal supporting device and method for selective laser melting. The conformal supporting device comprises a lifting platform. The lifting platform is provided with an inner cavity. A plurality of first through holes in communication with the inner cavity of the lifting platform are formed in the top wall of the lifting platform. The plurality of first through holes are formed at equal intervals. A plurality of driving assemblies are arranged in the lifting platform. The plurality of driving assemblies are in one-to-one correspondence with the plurality of first through holes. An output end of each of the driving assemblies extends out of the lifting platform through the corresponding first through hole and is provided with a supporting rod. An extending end of the supporting rod is detachably connected with a sacrificial assembly. The sacrificial assembly is configured to metallurgically connect to a formed workpiece. A plurality of second through holes are formed in a porous substrate. The plurality of second through holes are in communication with the plurality of first through holes on a one-to-one basis. The supporting rods respectively run through the corresponding second through holes. According to the present invention, after additive preparation of the formed workpiece is completed, the sacrificial assembly can be easily removed. In addition, the sacrificial assembly is easy to trim, and the workload of subsequent supporting structures of the formed workpiece is reduced.
Disclosed in the present invention is a macro-micro combination-based method for quantitatively evaluating a battery electrode charging strategy, comprising: constructing an electrochemical-stress model to obtain distribution and evolution rules of an electrode diffusion stress; according to the stress evolution rule in a lithiation process, using a multi-stage constant-current optimization strategy to perform rate optimization on the lithiation process, and on the basis of the stress of material yield strength, designing a rate optimization solution; separately performing macroscopic and microscopic quantitative verification on the rate optimization solution by means of a long-cycle test, an electrochemical impedance spectroscopy test, a scanning electron microscope test and a selected area electron diffraction test; and performing macro-micro combined analysis on macroscopic and microscopic quantitative verification results. By using macro-micro combined evaluation, the impact of charging strategies on microstructures of electrode materials and the cycle performance of batteries is studied, thus quantitatively revealing the optimization effects of different optimization strategies. By combining the microscopic characteristics of electrode materials and the macroscopic performance of charging strategies, the impact of different charging strategies on the performance of batteries is studied so as to optimize the charging strategies, thus improving the performance and prolonging the cycle life of batteries.
G16C 60/00 - Computational materials science, i.e. ICT specially adapted for investigating the physical or chemical properties of materials or phenomena associated with their design, synthesis, processing, characterisation or utilisation
33.
2O SYSTEM ON BASIS OF LINEAR GRADIENT THEORY AND PR EQUATION OF STATE
222222222O system at different temperatures. The prediction method can accurately predict the surface tension of a mixed gas at different temperatures.
A self-propelled full-automatic dense-planting vegetable transplanter and control method thereof includes a seedling taking and throwing mechanism, a box moving device, a crawler-type walking chassis, a seedling guiding device, a soil covering mechanism, a planting mechanism, and a dispersing device. The box moving device is mounted on the crawler-type walking chassis. The dispersing device is located on one side of the box moving device. The seedling taking and throwing mechanism includes a seedling taking and throwing movement mechanism and a linear movement mechanism. The linear movement mechanism is arranged above the box moving device. The seedling taking and throwing movement mechanism is configured to reciprocate between the dispersing device and the box moving device through the linear movement mechanism. The dispersing device is connected to the seedling guiding device.
A method for shape-performance control by ultrasonic rolling combined with selective laser melting is provided, which includes following steps: S1, establishing a three-dimensional model of a component to be processed, and setting printing process parameters; S2, after nitrogen gas is filled into a forming cavity to reduce an oxygen content to a preset value, lowering a forming substrate and raising a powder substrate, laying powder from the powder substrate onto the forming substrate by a scraper, recovering excess powder, and after the laying is completed, melting the powder by a laser galvanometer to form a solid layer, and cycling for several times; S3, performing ultrasonic rolling on a surface of the solid layer; S4, cycling steps S2 and S3 until the component is formed, and ending the cycling; and S5, performing ultrasonic rolling on a surface of a formed component to obtain a solid component.
A strawberry height-difference-free conveying and sorting circulation system, comprising: a cyclic conveying system (1), feeding mechanisms (2), a strawberry external quality testing mechanism (3), several buffering and discharging mechanisms (4) and a strawberry internal quality testing mechanism (5), wherein the cyclic conveying system (1) comprises a synchronous belt cyclic conveying mechanism (11) and several clamping mechanisms (12); the feeding mechanisms (2) convey strawberries to the clamping mechanisms (12); the clamping mechanisms (12) clamp strawberry stems and move same to the strawberry external quality testing mechanism (3) for preliminarily grading of the strawberries, and determine whether the strawberries need to be further graded; if not, the clamping mechanisms clamp the strawberry stems and move same to the buffering and discharging mechanisms (4) of the corresponding grades to discharge the strawberries, and if so, the clamping mechanisms clamp the strawberry stems and move same to the strawberry internal quality testing mechanism (5); and after the strawberry internal quality testing mechanism (5) grades the strawberries, the clamping mechanisms clamp the strawberry stems and move same to the buffering and discharging mechanisms (4) of the corresponding grades to discharge the strawberries. Strawberries are transferred and conveyed by means of clamping strawberry stems, thereby realizing no collision, pressing, falling, etc. throughout the entire process, and avoiding damage to the strawberries.
B07C 5/34 - Sorting according to other particular properties
B07C 5/02 - Measures preceding sorting, e.g. arranging articles in a stream, orientating
B65B 35/36 - Arranging and feeding articles in groups by grippers
B65D 85/34 - Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for fruit, e.g. apples, oranges or tomatoes
37.
SHAPE-PROPERTY REGULATION AND CONTROL METHOD AND DEVICE FOR ULTRASONIC ROLLING-COMBINED SELECTIVE LASER MELTING
A shape-property regulation and control method for ultrasonic rolling-combined selective laser melting, comprising the following steps: S1, establishing a three-dimensional model for a component to be processed, and setting printing process parameters; S2, after filling nitrogen into a forming cavity (15) to reduce the oxygen content to a preset value, a forming substrate (16) descending, and a powder substrate (19) ascending; by means of a scraper (7), laying powder onto the forming substrate (16) from the powder substrate (19) and recycling redundant powder; after laying is completed, melting the powder by means of a laser galvanometer to form a solid layer; and repeating same for multiple times; S3, performing ultrasonic rolling on the surface of the solid layer; S4, repeating steps S2 and S3 until said component is formed; and S5, performing ultrasonic rolling on the surface of the formed component, so as to obtain a solid component. The method can eliminate metallurgical defects generated during printing, improve the mechanical properties of the interior and the surfaces of components, and improve the practicability of selective laser melting devices.
The present disclosure belongs to the technical fields of nanoscience and fluorescence sensing, and specifically relates to a preparation method of a paper-based sensor for detecting an ammonia gas, and a use of the paper-based sensor. In the present disclosure, Zn(PA)(BPE) is first prepared, and a porous structure on a surface of the Zn(PA)(BPE) is used to adsorb an ammonia gas to improve a reaction sensitivity of the ammonia gas; then a Zn(PA)@CNQD ratiometric fluorescent substance is prepared from Zn(PA)(BPE) and CNQD through embedding, and finally dissolved in ultrapure water (UPW) to obtain a solution; and the solution is added dropwise on a filter paper, and the filter paper is purged with nitrogen, such that the solution is loaded on the filter paper to obtain a ratiometric fluorescent paper-based sensor.
Multi-excitation-source axial-flux permanent-magnet motor with partitioned, hierarchical, and variable poles, and variable-condition driving control system
The present disclosure provides a multi-excitation-source axial-flux permanent-magnet motor with partitioned, hierarchical, and variable poles, and a variable-condition driving control system. The motor mainly includes a main magnetic pole and an auxiliary magnetic pole. The main magnetic pole is responsible for providing a main air gap flux and is connected in series with a dual-stator magnetic circuit. The auxiliary magnetic pole is responsible for adjusting an air gap field and is connected in parallel with the dual-stator magnetic circuit. Magnetic fluxes of the main magnetic pole and the auxiliary magnetic pole together constitute the air gap field. The present disclosure can control a flux path of the auxiliary magnetic pole by controlling the magnitude of a current applied to a field winding, thereby adjusting an air gap flux, expanding a speed range of the motor, and achieving variable-condition operation of the motor.
H02K 1/2796 - Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the rotor face a stator
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 3/28 - Layout of windings or of connections between windings
H02K 11/33 - Drive circuits, e.g. power electronics
40.
METHOD FOR QUICKLY DETERMINING POSITION OF SIGNAL MOUTHPIECE OF SPRAYING EQUIPMENT
The present invention is a method for quickly determining the position of a signal mouthpiece of spraying equipment. The spraying equipment includes a bolt, a water intake signal mouthpiece, an outlet cover plate, a sprayer body, a water storage vessel, a scale line, a conduit and a water inlet connecting mouthpiece. The water intake signal mouthpiece is adjusted to a critical point, and a reference position of the water intake signal mouthpiece is marked. The water intake signal mouthpiece is adjusted to obtain a water intake area S1. The conduit is disconnected with a water intake port. The time t1 is recorded, and the flow coefficient μ of the signal water of the spraying equipment is calculated. M scale lines are drawn equidistantly on the outlet cover plate, and are marked with scales in turn. The optimization of the position of the signal mouthpiece of the spraying equipment is realized.
B05B 12/08 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target
B05B 9/04 - Spraying apparatus for discharge of liquid or other fluent material without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible containerSpraying apparatus for discharge of liquid or other fluent material without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pump
41.
METHOD FOR GENERATING CSAMT FULL-ZONE APPARENT RESISTIVITY-DEPTH PROFILE
A method for generating a CSAMT full-zone apparent resistivity-depth profile, comprising: using the horizontal positions [Equation 1] and the vertical positions [Equation 2] of recording points (5) as assignment points for apparent resistivity: in a far zone, a recording point (5) being located at a detection depth (4) right below an observation point (2); in a middle zone, the radius of a wavefront being reduced linearly as an induction number decreases, and a recording point (5) being located at a point of intersection of the wavefront and a straight line from the detection depth (4) to a source point (1), and approaching the source point (1) from an observation point (2) as the induction number decreases; in a near zone, as the induction number continuously decreases, the horizontal position of a recording point (5) approaching a midpoint of an offset (3) from the vicinity of the source point (1), the vertical position thereof approaching a certain constant value proportional to the offset (3) from the vicinity below the source point (1), and the constant value being equal to the offset (3) divided by critical values of the far zone and the middle zone. In order to separate planar and non-planar waves, and eliminate and utilize source overprint and shadow effects, the method is provided, thus improving the interpretation effect of the apparent resistivity-depth profile.
The present invention provides an intelligent inter-row and inter-plant weeding device and method. The device comprises: a frame; an image capture assembly arranged on the frame and configured to capture image data; a plurality of inter-row weeding assemblies arranged on the frame in a first direction and configured to perform inter-row tillage and weeding; a plurality of inter-plant weeding assemblies arranged on the frame in the first direction and configured to perform intra-row weeding, wherein each inter-plant weeding assembly comprises a first driving mechanism, a second driving mechanism and a weeding mechanism, the first driving mechanism being configured to drive the weeding mechanism to move in the first direction, and the second driving mechanism being configured to drive the weeding mechanism to perform a weeding action; and a control mechanism electrically connected to the image capture assembly and the first driving mechanism and configured to control the first driving mechanism on the basis of the image data, so as to adjust the position of the weeding mechanism in the first direction. The device can perform inter-row weeding and intra-row weeding, and can automatically avoid crops during intra-row weeding, thereby reducing damages to crops.
A01D 34/66 - MowersMowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis mounted on a vehicle, e.g. a tractor, or drawn by an animal or a vehicle with two or more cutters
A01B 39/18 - Other machines specially adapted for working soil on which crops are growing for special purposes for weeding
43.
Self-adaptive control system and method for stubble height and stubble righting operation of ratooning rice
A self-adaptive control system for height and operation of ratooning rice stubble cutting includes a stubble righting device, a profiling contact sensor, a speed radar, and a controller; the stubble righting device is installed at the rear of the harvester, and is connected to the bracket by the stubble righting device hydraulic cylinder; the profiling contact sensor is configured to detect the height of the header above the ground and transmit data to the controller; the speed radar is configured to obtain and transmit speed information of the harvester to the controller; the hydraulic valve block is installed on the chassis frame and connected to the header lifting hydraulic cylinder and the stubble righting device hydraulic cylinder respectively; input terminals of the controller are connected to the profiling contact sensor and the speed radar, and output terminals of the controller are connected to the motor and hydraulic valve block.
An apple damage volume prediction method, and a device, a storage medium and a processor. The method comprises: collecting an image of an apple damage region, and calculating the area of the apple damage region; obtaining a CT image, so as to obtain a damage volume of the apple damage region; performing a biological characteristic test on an apple sample, so as to measure an elastic modulus of apple peel, an elastic modulus of apple flesh, and a soluble pectin content of the peel; performing modelling by taking an empirical formula measurement value of an apple damage area, the elastic modulus of the apple flesh, the elastic modulus of the apple peel, and the soluble pectin content of the peel as input variables, and taking a CT calculation value of an apple damage volume as an output variable, so as to obtain a model PCA-RSVR; optimizing hyper-parameters of the model, so as to train a final model; and inputting the image of the apple damage region into the final model, so as to obtain a prediction value of the apple damage volume.
Disclosed in the present invention are an autonomous driving control system and method based on complex network cognition and end-to-end federated reinforcement learning, and a vehicle device. An autonomous driving algorithm framework (FLDPPO) based on complex network cognition and end-to-end federated reinforcement learning under urban dense traffic is provided, and by designing a loss function, a combination of rule-based complex network cognition and end-to-end federated reinforcement learning is achieved. In the FLDPPO, dynamic driving suggestions are used to guide agents to learn rules, so that the agents can cope with a complex urban driving environment and a dense traffic scenario. Moreover, the provided framework uses a multi-agent federated reinforcement learning architecture, and models are trained by means of parameter aggregation, protecting the privacy of a vehicle end while accelerating network convergence, reducing communication consumption, and achieving the balance between sample efficiency and high robustness of the models.
A quantitative analysis method for internal and external loading capacities of carbon nanotubes. The method comprises the following steps: (1) placing, in a tubular furnace, carbon nanotubes loaded with metal catalyst particles, and vacuumizing same; (2) performing annealing and capping; (3) calcining same, then placing same in a reaction kettle, adding dilute sulfuric acid, and heating same while stirring to obtain a sulfuric acid metal salt solution and capped carbon nanotubes in which metal catalyst particles are loaded; (4) measuring the loading capacity of nickel in the carbon nanotubes by means of IPC-MS technology; and (5) measuring the content of metal ions in the sulfuric acid metal salt solution by means of an EDTA coupling method. Capping the carbon nanotubes in advance before detection prevents metal nano particles loaded in the tubes from leaking, provides prerequisites for subsequent respective detection of the loading capacities in the tubes and on the outer walls, and also improves the detection precision of the internal and external loading capacities of carbon nanotubes. Moreover, the progress rate and extent of the capping reaction are regulated and controlled by adjusting the annealing temperature and rate, thereby achieving a better capping effect.
G01N 27/626 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
G01N 31/16 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods using titration
Disclosed is a centrifugal pump rotor fault diagnosis method employing CWGAN-GP and two-stream CNN models. The method comprises: first, collecting vibration displacement signals, carrying out reconstruction and then obtaining new vibration displacement signals, and forming a CWGAN-GP model training set; inputting the training set and label information corresponding to various faults into a CWGAN-GP model and performing training, then inputting random noise and the label information corresponding to various faults into the trained CWGAN-GP model, generating data corresponding to fault types, adding the generated data to vibration displacement signal sets for rotor imbalance faults and rotor misalignment faults, and obtaining an equalized data set; and training a two-stream CNN model by using the equalized data set, and then inputting vibration displacement signals and two-dimensional time frequency image data into the trained two-stream CNN model, so as to classify different types of faults of a centrifugal pump rotor. The present invention improves the efficiency and accuracy of fault diagnosis for a centrifugal pump rotor.
The present invention discloses an electromechanical power transmission device having a multi-mode mechanical and hydraulic stepless transmission, comprising an input component, a shunting mechanism, a mechanical transmission mechanism, a convergence mechanism, a hydraulic transmission mechanism, a motor system and an output component. The input component is connected to the shunting mechanism, a clutch assembly connects an output end of the motor system to the shunting mechanism, and the clutch assembly connects an output end of the shunting mechanism to the mechanical transmission mechanism and the motor system. The clutch assembly connects the mechanical transmission mechanism, the motor system and another output end of the motor system to the convergence mechanism. By means of adjusting the displacement ratio of the hydraulic transmission mechanism, adjusting the transmission ratio of a metal belt stepless transmission mechanism, and selectively controlling engagement of the clutch assembly and the brake assembly, a continuous transmission ratio is provided between the input component and/or the motor system and the output component. The present invention combines electromechanical hybrid power with multi-mode mechanical and hydraulic transmission, and satisfies operation requirements of different working conditions.
F16H 47/08 - Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion
F16H 47/04 - Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
F16H 47/02 - Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
49.
Hydro-mechanical series and parallel transmission device and control method thereof
A hydro-mechanical series and parallel transmission device and a control method thereof are provided. The device includes an input shaft assembly, a hydraulic transmission assembly, a planetary gear transmission assembly, an intermediate gear transmission assembly, and an output shaft assembly. Switching among a hydraulic transmission mode, a mechanical transmission mode, and a hydro-mechanical composite transmission mode is implemented through combination and engagement/disengagement of clutches and brakes. The hydro-mechanical series transmission is used to expand the speed regulation range of the hydraulic transmission and is combined with the hydraulic transmission to meet the requirements on precision and the speed regulation range. The requirements of low-power and high-power operations are met through combination of the hydro-mechanical series and parallel transmissions. Multiple transmission modes are formed to adapt to the working conditions of startup, operation, and transfer.
F16H 47/04 - Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type the mechanical gearing being of the type with members having orbital motion
F16H 61/70 - Control functions within change-speed- or reversing-gearings for conveying rotary motion specially adapted for change-speed gearing in group arrangement, i.e. with separate change-speed gear trains arranged in series, e.g. range or overdrive-type gearing arrangements
F16H 61/00 - Control functions within change-speed- or reversing-gearings for conveying rotary motion
50.
HYDRO-POWER GENERATION APPARATUS UTILIZING KINETIC ENERGY OF WATER IN STEPWISE MANNER
The present invention relates to a hydro-power generation apparatus utilizing kinetic energy of water in a stepwise manner. Three steps are provided on a sloped surface of a triangular base from top to bottom, and a supporting rod is arranged on a vertical surface of each step. A first rotating wheel, a second rotating wheel and a third rotating wheel sequentially arranged from high to low are freely rotatably supported on corresponding supporting rods by means of rotating wheel shafts, respectively, and the three rotating wheel shafts are horizontally arranged and are connected to corresponding generator shafts, respectively. Horizontal flow channels for guiding water flows downstream are provided at a lower portion of the triangular base, and outlets of the horizontal flow channels are directly opposite the third rotating wheel. When water flows flow through the horizontal flow channels, one stream of water forms a turbulent flow and sequentially passes through three resistance-type rotating wheels in the direction of the sloped surface to generate a torque for rotating the rotating wheels, such that a generator rotor is driven to rotate; and the other two streams of water flow downstream from the horizontal flow channels to push, together with an incoming flow downwards from the sloped surface, the third rotating wheel to rotate, so as to increase the torque for rotating the third rotating wheel. The kinetic energy of water is utilized in a stepwise manner, thereby avoiding scouring of a downstream seabed or riverbed by means of rotation of the rotating wheels.
F03B 13/00 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates
F03B 11/00 - Parts or details not provided for in, or of interest apart from, groups
A preparation method for an internal laser-induced carbonization layer of aramid fiber resin matrix composite material is provided. The surface of sample of aramid fiber resin matrix composite material is wiped with anhydrous ethanol; the sample of aramid fiber resin matrix composite material was placed on the laser sample platform, and the defocusing amount between the laser focus and the upper surface of the sample was negative. Infrared picosecond laser was used to scan the sample of aramid fiber resin matrix composite material for several times. Since the laser absorption rate of the surface epoxy resin was very low, most of the laser energy passed through the epoxy resin layer and directly acted on the internal aramid fiber. The laser carbonized the internal aramid fiber without damaging the surface resin, and formed a carbonized line along the laser scanning path to realize the conductivity of aramid fiber resin matrix composite.
B23K 26/53 - Working by transmitting the laser beam through or within the workpiece for modifying or reforming the material inside the workpiece, e.g. for producing break initiation cracks
H05K 3/10 - 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
52.
Composite-strengthened heat-resistant and wear-resistant aluminum alloy and preparation method thereof
The present disclosure relates to a composite-strengthened heat-resistant and wear-resistant aluminum alloy and a preparation method thereof, and belongs to the field of preparation of high-performance metal materials. In the composite-strengthened heat-resistant and wear-resistant aluminum alloy of the present disclosure, an Al—Si—Cu—Mg alloy is adopted as a matrix, and microalloying elements for improving the heat resistance and a heat-resistant high-entropy alloy (HEA) for improving the wear resistance are added to allow composite strengthening. The preparation method mainly includes the following steps sequentially: smelting and alloying, blowing and refining, blow-compounding, die-casting molding, solution treatment, water quenching, and cryogenic and aging composite heat treatment.
C22C 1/06 - Making non-ferrous alloys with the use of special agents for refining or deoxidising
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
53.
IN-SITU NANOPARTICLE REINFORCED ALUMINUM-BASED WELDING WIRE, AND PREPARATION METHOD AND WELDING METHOD THEREFOR
2322222322233 are good high-temperature absorption materials and may generate active sites on surfaces in welding processes, Sc, Er and Zr are more prone to be attached to the surfaces of ceramic particles, thereby improving the wettability between nano-ceramic particles and aluminum and obtaining nanoparticles distributed more uniformly. Furthermore, rare earth aluminide has remarkable refining and reinforcing effects on welding seams, thereby improving the welding property of welding wires.
B23K 35/28 - Selection of soldering or welding materials proper with the principal constituent melting at less than 950°C
B23K 35/40 - Making wire or rods for soldering or welding
B23K 26/346 - Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups , e.g. in combination with resistance welding
54.
FLUORESCENCE DETECTION KIT FOR ACTIVATED COMPLEMENT C1s, DETECTION METHOD USING SAME, AND USE THEREOF
A fluorescence detection kit for the enzymatic activity of activated complement C1s, a detection method using the same, and use of the same are provided for a purpose of detecting the enzymatic activity level of the activated complement C1s in a sample. Specific capture and magnetic separation of C1s in a C1s standard or a sample to be tested are performed based on a magnetic bead precoated with a C1s recombinant antibody. After non-specific binders are removed, a fluorescence resonance energy transfer (FRET) fluorescein labeled substrate peptide for enzyme digestion by C1s is added, and a fluorescence signal in an obtained reaction system is detected with a microplate reader. Accordingly, the enzymatic activity of activated C1s is quantitatively determined by detecting changes of a fluorescence intensity.
A surface-enhanced Raman scattering (SERS)-based test kit for Staphylococcus aureus includes a magnetic nanosphere, gold/silver core-shell nanoparticles (Au—Ag NPs), Au nanoparticles (Au NPs), a SERS signaling molecule, a rolling circle amplification (RCA) template, a target aptamer, a complementary deoxyribonucleic acid (cDNA) and a single-stranded deoxyribonucleic acid (ssDNA). A detection method for S. aureus using the SERS-based test kit is also provided.
C12Q 1/6834 - Enzymatic or biochemical coupling of nucleic acids to a solid phase
C12Q 1/689 - Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms for bacteria
56.
Guide vane body with vortex suppression structure ring and axial-flow nuclear reactor coolant pump
Provided are a guide vane body with a vortex suppression structure ring and an axial-flow nuclear reactor coolant pump (RCP), including a rim cover plate, a hub cover plate, guide vane blades and a diffuser, where the hub cover plate is coaxially arranged in the rim cover plate, and a flow channel is placed between the hub cover plate and the rim cover plate, and a plurality of guide vane blades are placed in the flow channel in an array; and an outlet end of the hub cover plate is connected with the diffuser, and an outer wall of the diffuser gradually expands along a fluid flow direction; a diversion ring is arranged circumferentially on an inner wall at the outlet side of the rim cover plate, and the vortex suppression structure ring is placed at an outlet edge of the diversion ring.
The present invention provides a heat stabilizer for PVC and a preparation method, a modifier, and a use, and provides a tung oil-derived nitrogen-containing zirconium carboxylate heat stabilizer and a tung oil-derived calcium/zinc imidazole carboxylate heat stabilizer, and preparation methods therefor. The tung oil-derived nitrogen-containing zirconium carboxylate and the tung oil-derived calcium/zinc imidazole carboxylate are used as a composite heat stabilizer which is then compounded with an antioxidant 1010, an antioxidant 168, and stearic acid to prepare a modifier containing the tung oil-derived nitrogen-containing zirconium carboxylate composite heat stabilizer. The composite heat stabilizer and the modifier prepared by the present invention have the characteristics of no toxicity, no heavy metal, environmental friendliness and the like, and endow the PVC with excellent initial and long-term thermal stability. The preparation methods of the present invention involve a simple processing and manufacturing process and have low processing costs, exhibit environmental friendliness and no toxicity, and are suitable for industrial mass production and promotion.
C07C 233/63 - Carboxylic acid amides having carbon atoms of carboxamide groups bound to carbon atoms of rings other than six-membered aromatic rings having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by carboxyl groups
C08L 27/06 - Homopolymers or copolymers of vinyl chloride
C07C 231/02 - Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
C07C 231/12 - Preparation of carboxylic acid amides by reactions not involving the formation of carboxamide groups
C07D 257/06 - Five-membered rings with nitrogen atoms directly attached to the ring carbon atom
A two-stage jet device with a stream guide structure, the two-stage jet device comprising a cavity (1) and nozzles (4), wherein an outlet is provided at one end of the cavity (1), and a first gas inlet (2) and a second gas inlet (1-2) are provided at the other end of the cavity (1). The nozzles (4) comprise a first-stage nozzle (4-1) and a second-stage nozzle (4-2), wherein the first-stage nozzle (4-1) is located in a mixing cavity (1-4), and the second-stage nozzle (4-2) can be axially movably mounted in the first-stage nozzle (4-1). The two-stage jet device further comprises guide blades (5), which are respectively provided in the first gas inlet (2) and in a suction cavity (6) of the mixing cavity (1-4), wherein the guide blade (5) in the suction cavity (6) can rotate; and according to the position of the second-stage nozzle (4-2), a control system controls the rotation angle of the guide blade (5) in the suction cavity (6). The two-stage jet device can horizontally move a second nozzle according to the magnitude of the output power of a stack, and also cooperatively control the rotation of a rotating guide blade, so that secondary stream gas enters primary stream gas at an optimal angle.
F04F 5/16 - Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
A rapid detection method for ciprofloxacin in meat products based on enzyme-linked up-conversion fluorescence and a potassium titanyl oxalate acid system, which belongs to the field of antibiotic detection technology. The detection method comprises: mixing an enzyme-linked up-conversion nanoparticle solution with an aptamer-connected magnetized polydopamine solution to obtain a fluorescent-ultraviolet dual-signal sensor detection system; and integrating potassium oxalate acid and hydrogen peroxide to collectively establish a ciprofloxacin content detection fluorescence standard curve and colorimetric standard curve, signal values of the ultraviolet absorbance and the fluorescence intensity of a meat product sample liquid are measured, and the ciprofloxacin content in the meat product is calculated according to the fluorescence standard curve and the colorimetric standard curve.
G01N 21/33 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
60.
Hydrogen-sensitive material resistant to humidity interference, semiconductor resistive hydrogen sensor, and intelligent hydrogen sensing system, and preparation method and use thereof
Provided are a hydrogen-sensitive material resistant to humidity interference, a semiconductor resistive hydrogen sensor, and an intelligent hydrogen sensing system, and a preparation method and use thereof, which relate to the technical field of gas sensors. The hydrogen-sensitive material resistant to humidity interference includes a three-dimensional (3D) porous non-conductive metal oxide substrate, a nano-scale WO3-x film deposited on an outer surface and an inner pore surface of the 3D porous non-conductive metal oxide substrate, and Pd nanoclusters diffusely distributed on a surface of the nano-scale WO3-x film, wherein the nano-scale WO3-x film is formed from oxygen vacancy-containing tungsten oxide.
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
61.
METHOD FOR DESIGNING CYLINDRICAL SKIVING TOOL WITHOUT GEOMETRIC RELIEF ANGLE
A method for designing a cylindrical skiving tool without a geometric relief angle is provided. The method includes: designing a teeth number and a crossed shaft angle of a tool; calculating a barrel-shaped conjugate surface conjugated to a tooth surface of a to-be-machined gear; determining an offset of a rake face of the cylindrical skiving tool from a middle section of the barrel-shaped conjugate surface; designing a helix angle of the tool; designing a rake angle of the tool; calculating an edge profile of the rake face; obtaining design parameters and mounting parameters of the skiving tool; manufacturing the tool according to the design parameters of the tool, and performing skiving on a skiving machine according to the mounting parameters of the tool. The present disclosure provides a skiving method under a spatially-offset conjugate condition, to solve the problems of fast accuracy degradation and short service life.
B23P 15/36 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools milling cutters for thread cutting
Disclosed in the present invention is a construction method for a control system for a high-speed electric spindle supported by six-pole active magnetic bearings. The method comprises: constructing a transfer learning model by means of a marginal distribution distance between a source domain data set and a target domain data set, training same to obtain a predicted disturbance function, and building the predicted disturbance function in a transfer learning module; using an actual displacement as an input of the transfer learning module so as to obtain a predicted disturbance, and forming an optimized active disturbance rejection controller by using a tracking differentiator, a nonlinear state error feedback control law, a first compensation factor, a second compensation factor, the transfer learning module and an extended state observer jointly; and three optimized active disturbance rejection controllers being connected in series to the front end of a three-degree-of-freedom compound controlled object, and two optimized active disturbance rejection controllers being connected in series to the front end of a two-degree-of-freedom compound controlled object, so as to jointly form a control system. Using active disturbance rejection control based on transfer learning optimization to predict a disturbance and using the optimized extended state observers to perform estimation and compensation for the total system disturbance improve the control performance of the system.
F16C 32/04 - Bearings not otherwise provided for using magnetic or electric supporting means
G05B 13/04 - Adaptive control systems, i.e. systems automatically adjusting themselves to have a performance which is optimum according to some preassigned criterion electric involving the use of models or simulators
63.
Multi-task joint perception network model and detection method for traffic road surface information
A multi-task joint perception network model and detection method for traffic road surface information can simultaneously detect a lane line and a drivable area. A coordinate attention mechanism is integrated into a traditional feature extraction network to ensure that a feature extraction effect is enhanced while a calculated amount is not increased. In a neck network, a dilated convolution residual module is proposed to enhance performance of prediction of details by the network, and a decoder part shares features of the drivable area into lane line detection to enhance a lane line detection effect under complex road conditions. In a training stage, there is provided a alternating optimization training method to improve integral segmentation performance of the model. The multi-task joint perception network model and detection method realizes quite high accuracy and excellent speed performance in a challenging BDD100K dataset.
G06K 9/62 - Methods or arrangements for recognition using electronic means
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
G06V 10/32 - Normalisation of the pattern dimensions
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 10/80 - Fusion, i.e. combining data from various sources at the sensor level, preprocessing level, feature extraction level or classification level
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G06V 20/56 - Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
The present disclosure provides an air-assisted ultrasonic magnetization electrostatic nozzle, and belongs to the technical field of agricultural equipment. The air-assisted ultrasonic magnetization electrostatic nozzle includes a Laval tube, a liquid inlet section, a charging electrode plate, and a resonant cavity. After being accelerated by the Laval tube, an air impacts a liquid that enters through the liquid inlet section arranged at an outlet end of the Laval tube. The liquid is impacted into fine droplets and the fine droplets are positively electrified after passing through the charging electrode plate arranged at an outlet end of the liquid inlet section, to obtain electrified droplets. The electrified droplets enter the resonant cavity and are magnetized, to obtain magnetized droplets. The magnetized droplets are atomized and sprayed out by a metal film arranged at an outlet end of the resonant cavity. In the present disclosure, with the arrangement a metal oscillator, the Laval tube, and the charging electrode plate, the atomized droplets are magnetized and electrified, so that the atomized droplets are more effectively adsorbed on plants in an aeroponic chamber, to accelerate the root system growth of aeroponically propagated crops. With the arrangement of a temperature-regulating device, airflows with different temperatures can be output according to the temperature of the aeroponic chamber, so as to regulate the environmental temperature and promote the rapid growth of the plants.
The present invention provides a floating-type counter-rotating vortex elimination apparatus for a pump station, and a pump station. The floating-type counter-rotating vortex elimination apparatus comprises a floating-type driving disc, a counter-rotating gearbox, a reverse rotating disc, a plane bearing, an elastic element, and a counterweight; the floating-type driving disc floats on a liquid level near the water suction end of a pump station, and is driven to rotate by means of power generated by a vortex; the floating-type driving disc is connected to the reverse rotating disc by means of the counter-rotating gearbox, so that the rotating directions of the reverse rotating disc and the floating-type driving disc are different; the plane bearing is mounted at the bottom of the reverse rotating disc; the plane bearing is connected to the counterweight by means of the elastic element and is used for preventing inclination. The present invention can generate a reaction force to counteract vortexes, and weaken or eliminate free liquid level vortexes, and thus provide more uniform incoming flow for a large water pump.
The present invention relates to the technical fields of photoelectric communication and photoelectric devices, and discloses a perovskite/silicon heterojunction photodetector and a preparation method therefor. The perovskite/silicon heterojunction photodetector comprises a conductive silicon substrate, a perovskite layer, and electrodes. The perovskite layer is composed of a perovskite body and a zeolitic imidazolate framework material ZIF-67. The method comprises the steps of mixing ZIF-67 powder with a perovskite precursor solute, adding a solvent, stirring to obtain a homogeneous perovskite precursor solution, then preparing a perovskite thin film on a treated conductive silicon substrate by using an anti-solvent spin coating method, carrying out gradient thermal annealing to obtain a high-quality perovskite layer, constructing a perovskite/silicon heterojunction, and finally preparing electrodes on the surface of the perovskite layer to obtain a perovskite/silicon heterojunction photodetector. ZIF-67 is used for carrying out n-type doping on a perovskite, constructing a heterojunction with p-type low-resistance silicon, and accelerating the separation of carriers by utilizing a built-in electric field. In addition, ZIF-67 can regulate and control the growth of thin films, so that the grain boundary and the defect state are reduced, and the non-radiation composite loss of devices is reduced, thereby improving the performance and stability of the devices.
2 and the 2-methylimidazole, and then the ZIF-8 nanomaterial is dispersed with ethanol and mixed with a colorimetric solution. The resultant mixed solution is added with polyethylene glycol-300 and applied to a substrate to obtain the nanoscaled dye@ZIF-8-based colorimetric sensor. This application further provides an evaluation method using the nanoscaled dye@ZIF-8-based colorimetric sensor, in which a back propagation neural network is established as the food quality evaluation model to evaluate the food quality.
B01L 3/00 - Containers or dishes for laboratory use, e.g. laboratory glasswareDroppers
G01J 3/46 - Measurement of colourColour measuring devices, e.g. colorimeters
G01N 21/78 - Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
68.
TWO-SCALE NUMERICAL VALUE CALCULATION METHOD FOR PERFORMANCE OF SLIDING BEARING WITH IMPACT OF ROUGHNESS TAKEN INTO CONSIDERATION
Disclosed in the present invention are a two-scale numerical value calculation method for the performance of a sliding bearing with the impact of roughness taken into consideration. The method solves the problem of the calculation accuracy and speed regarding the impact of roughness on lubrication performance of sliding bearings, and overcomes the problem of calculation being inaccurate and unsuitable in conventional methods without taking roughness into consideration. In the present invention, cavitation in sliding bearings is taken into consideration, and a fluid dynamic behavior model is established on the basis of roughness. In order to solve the problem of fluid dynamics in a macroscopic domain, a two-scale normalization method is provided, such that microscale effects are coupled into a macroscopic scale by means of finite difference partial derivatives, and then a response of a fluid dynamic behavior in a microscale domain to roughness is calculated by using the normalization method; and a linearization method is provided to calculate finite difference partial derivatives. The present invention provides a two-scale normalization-based numerical value calculation method for the bearing capacity and friction coefficient of a sliding bearing, thereby providing a more accurate and more universally applicable method for numerical value calculation of the performance of sliding bearings with the impact of roughness taken into consideration.
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
69.
VANE PUMP TRANSIENT PROCESS PERFORMANCE OPTIMIZATION DESIGN METHOD
Disclosed in the present invention is a vane pump transient process performance optimization design method, comprising: respectively creating an initial design model of a vane pump, an initial design model of an impeller, and a vane pump starting process full-flow-field simulation model, selecting impeller structure parameters as design variables, and on the basis of the initial design models and the vane pump starting process full-flow-field simulation model, performing starting process transient numerical calculation by using CFD simulation software, wherein starting process transient external characteristics comprise a transient lift and transient efficiency; performing data processing on the starting process transient lift and transient efficiency to respectively obtain a weighted average lift and weighted average efficiency; taking the design variables as input parameters, and taking the weighted average lift and the weighted average efficiency as response values; establishing a transient process performance optimization model on the basis of a response surface function; and optimizing vane pump transient process performance by using the established transient process performance optimization model. The vane pump transient process performance optimization design method of the present invention can ensure the calculation accuracy, accelerate the optimization process and shorten the optimization time.
G06F 30/17 - Mechanical parametric or variational design
G06F 30/28 - Design optimisation, verification or simulation using fluid dynamics, e.g. using Navier-Stokes equations or computational fluid dynamics [CFD]
A data optimization method for a food fermentation process is provided. Process data of the food fermentation process is acquired, and a multi-scale cross-correlation feature filter (MCFF) is constructed. Feature data corresponding to the process data is extracted in real time based on the MCFF, and processed. A data prediction model corresponding to the feature data is created through a machine learning method, and based on the data prediction model and an optimization algorithm, predicted optimization control data corresponding to the food fermentation process is generated in real time. A data optimization system is further provided.
A microfluidic biosensing platform based on up-conversion luminescence, the microfluidic biosensing platform comprising an up-conversion luminescent biosensor, which is used for specifically recognizing EDCs, and a microfluidic chip, which is configured such that the mixing, reaction, separation and measurement of the up-conversion luminescent biosensor and a sample to be subjected to measurement are integrated therein, wherein the microfluidic chip comprises: sample feeding reservoirs, which are used for sample feeding of the up-conversion luminescent biosensor and the sample to be subjected to measurement; an arc-shaped channel, a feeding port of the arc-shaped channel being in communication with both the sample feeding reservoir of the up-conversion luminescent biosensor and the sample feeding reservoir of the sample to be subjected to measurement, and after the up-conversion luminescent biosensor and the sample to be subjected to measurement enter the arc-shaped channel, the arc-shaped channel being configured for the mixing and reaction between the up-conversion luminescent biosensor and the sample to be subjected to measurement; a separation channel (7), which is in communication with a discharge port of the arc-shaped channel and is used for the magnetic separation of the up-conversion luminescent biosensor after the reaction is finished; and a measurement reservoir (8), which is in communication with a discharge port of the separation channel and is used for completing luminescence enhancement quantitative measurement of the EDCs.
A modeling method for electromagnetic forces and vibration response of a SPM machine, belonging to the field of combined electromagnetic field and structural mechanics computation. First, build the circuit-based EMN model, regular EMN model, and discrete EMN model with equivalent magnetic source and permeance for the different regions of the SPM machine. Second, based on the spatial relationships between each part in the SPM machine, the EMN models of each region are interconnected to form a complete model of the discrete EMN model. The non-sinusoidal high-frequency current harmonics are introduced as input excitation to the discrete EMN model. The global nonlinear matrix equation is solved simultaneously to determine the magnetic flux density in the air gap permeance elements, enabling the air gap electromagnetic force density calculation. Subsequently, the calculated electromagnetic force density is transformed into concentrated forces on the surface of the stator teeth.
G06F 119/14 - Force analysis or force optimisation, e.g. static or dynamic forces
73.
USE OF HUMAN UMBILICAL CORD MESENCHYMAL STEM CELL-DERIVED SMALL EXTRACELLULAR VESICLE (hucMSC-sEV) IN PREPARATION OF DRUG FOR TREATING TYPE 2 DIABETES MELLITUS (T2DM)
The present disclosure provides use of a human umbilical cord mesenchymal stem cell-derived small extracellular vesicle (hucMSC-sEV) in preparation of a drug for treating type 2 diabetes mellitus (T2DM), and belongs to the technical field of biomedicine. In the present disclosure, experiments have verified that the hucMSC-SEV can effectively reduce blood glucose in a db/db mouse model, improve a morphological disorder of pancreatic islets, and increase a number of β cells. Moreover, the hucMSC-sEV can also remodel pancreatic β cells by reversing apoptosis and dedifferentiation of the β cells. It is confirmed that the hucMSC-sEV is an effective pharmaceutical ingredient that improves pancreatic islet functions, and can effectively ameliorate T2DM, regulate glucose homeostasis, improve a pancreatic islet structure, and increase a quality of the pancreatic islet β cells, thereby achieving therapeutic effects from a root cause of the disease.
The present invention belongs to the field of calculation combining electromagnetic fields and structural mechanics. Disclosed is an electromagnetic force and vibration modeling method for a surface-mounted permanent magnet electric motor. The method comprises: firstly, for different areas in a surface-mounted permanent magnet electric motor, respectively establishing a subdivision network model, a regular magnetic circuit model and a discretized equivalent magnetic source and magnetic conduction hybrid model; next, connecting the models of the areas on the basis of a spatial position relationship of a structural topology, establishing a complete model of a discretized equivalent magnetic network of the electric motor, introducing non-sinusoidal high-frequency current harmonic waves as model input excitation, simultaneously solving a global nonlinear matrix equation, solving a magnetic flux density of a mesh node of an air gap, and calculating an electromagnetic force density of the air gap of the electric motor; then, converting the calculated electromagnetic force density into a concentrated force of a tooth surface of a stator, and obtaining a vibration transfer function on the basis of modal and static displacement features of the stator and a casing of the electric motor; and finally, completing vibration calculation on the basis of the electromagnetic force, which is calculated by means of the discretized equivalent magnetic network, and the vibration transfer function.
A use of umbilical cord mesenchymal stem cell-derived small extracellular vesicles (hucMSC-sEVs) in preparation of a drug for treating type 2 diabetes. Experiments prove that hucMSC-sEVs can effectively reduce the blood glucose of a db/db mouse model, mitigate the pancreatic islet morphology disorder, increase the number of β cells, and remodel pancreatic β cells by reversing β cell apoptosis and dedifferentiation. Hence, hucMSC-sEVs can effectively improve the structure and function of pancreatic islets, reduce the blood glucose level caused by type 2 diabetes, regulate glucose homeostasis, and improve the quality of pancreatic β cells, can be used as a novel drug for treating type 2 diabetes, and is beneficial to clinical popularization and application.
A dynamic antimicrobial hydrogel based on natural receptor-ligand recognition, and a preparation method and use thereof are provided. A ligand vancomycin and a receptor AA-based material each are first modified with a modification material, and then a photoinitiator is added to prepare a hydrogel material under irradiation of ultraviolet (UV) light. In the hydrogel, a three-dimensional (3D) network structure is formed through crosslinking. After undergoing a fracture under an external pressure, the hydrogel can rapidly heal itself through crosslinking due to a ligand-receptor interaction and a multi-hydrogen-bond interaction, which bio-mimicks a natural ligand-receptor interaction to realize the dynamics of the hydrogel material. The high antiomicrobial activity of vancomycin imparts the functionality of the hydrogel material; and the physiologically-derived monomer improves the biocompatibility and reduces the biological toxicity.
The present invention relates to a lift and drag combined hydroelectric generation device, comprising a runner shaft, and a lift runner, a primary drag runner and a secondary drag runner which are coaxially arranged with the runner shaft, the runner shaft being rotatably supported onto a support frame, and the primary drag runner and the secondary drag runner being arranged in series on the runner shaft. A disc generator is located between the primary drag runner and the secondary drag runner and installed on the runner shaft, and the lift runner is located on the peripheries of the primary drag runner and the secondary drag runner and connected onto the runner shaft. Under the action of water flow, the lift runner generates, by means of the lift force of blades thereof, a torque that causes the runner shaft to rotate, and the primary drag runner and the secondary drag runner generate, by means of the lift force of blades thereof, a torque that causes the runner shaft to rotate, so as to together convert water kinetic energy into mechanical energy that causes the disc generator to rotate. A structure that combines a single-stage lift impeller and a two-stage split drag impeller converts kinetic energy of upstream water flow into mechanical energy that drives a generator rotor to rotate, thus having higher power generation efficiency and complete self-starting performance.
F03B 13/00 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates
F03B 13/22 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using wave energy using the flow of water resulting from wave movements, e.g. to drive a hydraulic motor or turbine
78.
DIBENZYLIDENEACETONE MODIFIED HYDROPHOBIC BUTYL RUBBER DAMPING COMPOSITE MATERIAL AND PREPARATION METHOD THEREFOR
The present invention belongs to the field of polymer-based damping materials. Disclosed are a dibenzylideneacetone modified hydrophobic butyl rubber damping composite material and a preparation method therefor. The preparation method comprises: reacting butyl rubber, sodium hydride and dibenzylideneacetone in a torque rheometer for a period of time, then mixing the rubber material using a double-roll mixing mill, sequentially adding stearic acid, zinc oxide, tetramethylthiuram disulfide, dibenzothiazyl disulfide, sulfur, a lignin modified phenolic resin and a montmorillonite filler thereto until mill banding occurs and the materials are uniformly mixed, taking out the resulting mixture, and putting the mixture aside for 24-36 hours to remove bubbles, so as to prepare raw rubber; and vulcanizing the raw rubber on a plate vulcanizing machine, so as to obtain a hydrophobic butyl rubber damping composite material. In the present application, the lignin modified phenolic resin is added and combined with the solvent-free modified butyl rubber, so the present application is green and environmentally friendly, and the operation is simple; and a benzene ring rigid group is introduced, such that the damping temperature range of the butyl rubber is widened, the damping factor is increased, the damping material has hydrophobic performance, and the application fields of the butyl rubber damping material are widened.
C08L 23/26 - Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bondCompositions of derivatives of such polymers modified by chemical after-treatment
C08L 61/06 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
A preparation method for heterogeneous Mg alloys bar with high elastic modulus. It provides a preparation method of solid-liquid composite casting in a specific mold to produce the heterostructured metallic bars composed of high elastic modulus metal and low elastic modulus Mg alloy. Subsequently, the microstructure of heterogeneous Mg alloys bars is adjusted by the specific deformation and heat treatment. Heterogeneous Mg alloys bars without oxide inclusions and with good interfacial bonding were prepared through this method. The improvement of elastic modulus is obtained by tailoring the heterogeneous microstructure.
C22F 1/06 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
B22D 19/00 - Casting in, on, or around, objects which form part of the product
B22D 21/00 - Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedureSelection of compositions therefor
C22F 1/02 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
A counter-flow indirect dew-point evaporative cooler is provided, including a plurality of working channels provided parallel to each other, where adjacent working channels are separated from each other by a partition wall; in a gas flow direction, an interior of each working channel is divided into a dry channel and a wet channel; directions of airflow in the adjacent working channels are opposite, so dry channels and wet channels in the adjacent working channels are also oppositely provided, and thus the airflow in the adjacent working channels is in a counter-flow configuration; a product air outlet is provided at a junction of the dry channel and the wet channel; air to be treated enters the wet channel along a straight line from the dry channel to become working air, and obtained product air is discharged from the product air outlet.
A method for determining ciprofloxacin in a meat product based on an enzyme-linked upconversion fluorescence and potassium titanium oxalate system is provided. An enzyme-linked upconversion nanoparticle solution is mixed with an aptamer-bound magnetized polydopamine solution to obtain a fluorescence-ultraviolet dual-signal detection system. A fluorescence standard curve and a colorimetric standard curve for the ciprofloxacin content determination are created through the fluorescence-ultraviolet dual-signal detection system in combination with potassium titanium oxalate and hydrogen peroxide. A fluorescence intensity signal characteristic value and an ultraviolet absorbance signal characteristic value of a meat sample solution are determined. A ciprofloxacin content in the meat sample is calculated according to the fluorescence standard curve and the colorimetric standard curve.
C12Q 1/18 - Testing for antimicrobial activity of a material
C12Q 1/00 - Measuring or testing processes involving enzymes, nucleic acids or microorganismsCompositions thereforProcesses of preparing such compositions
C12Q 1/04 - Determining presence or kind of microorganismUse of selective media for testing antibiotics or bacteriocidesCompositions containing a chemical indicator therefor
C12Q 1/689 - Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes for detection or identification of organisms for bacteria
G01N 1/38 - Diluting, dispersing or mixing samples
The present application discloses a SERS sensor-based method and system for detecting pesticide residues in tea leaves. The method comprises the steps of: preparing a gold-silver octahedral hollow cage; mixing a prepared sensor taking the gold-silver octahedral hollow cage as base with a standard pesticide solution to obtain SERS spectral data; and on the basis of a quantitative model, completing the detection of thiram and pymetrozine in tea leaves. According to the present application, by means of an octahedral cuprous oxide template, an Au-AgOHCs nanomaterial is prepared by secondary reduction of gold and silver ions and removal of the template by acid dissolution, so that a SERS sensor having excellent performance is prepared and used in rapid quantitative detection of thiram and pymetrozine in tea leaves. Compared with conventional smooth solid metallic nanomaterials, the present application has a stronger localized electromagnetic field and localized plasma resonance effect, so that excellent SERS sensing performance is obtained.
The present invention belongs to the field of organophosphorus pesticide (OP) detection, and relates to a method for detecting an OP by a microfluidic chip based on a fluorescent sensing film. A porous fluorescent sensing film and the microfluidic chip are first constructed. The fluorescent sensing film is fabricated through layer-by-layer self-assembly of a platinum nanoparticle@oxalate-metal-organic framework (MOF) composite and a porous two-dimensional (2D) nanosheet, and has the functions of specifically detecting OPs and blocking macromolecular interferents. The microfluidic chip includes a sample channel, injection channels, reaction tanks, microfluidic channels, a detection tank, and an optical fiber channel, such that sample pretreatment and detection processes are integrated in the chip. An OP detection system is established by combining a portable constant-pressure syringe pump, a laser, a spectrometer, a signal transmitter, and a signal indicator, such that test devices are miniaturized and integrated and the OP detection is standardized.
JIANGSU HENGSHUN VINEGAR INDUSTRY CO., LTD. (China)
JIANGSU HENGSHUN GROUP CO., LTD. (China)
Inventor
Li, Xin
Zou, Xiaobo
Cui, Pengjing
Zhang, Junhong
Deng, Huixin
Zhang, Bao
Zhu, Jie
Chen, Wen
Lu, Rongsong
Li, Wenting
Zhu, Shenghu
Abstract
Disclosed in the present invention is a vinegar fermentation degree measurement device, comprising: a liquid feeding cylinder, a moving rod, a sample storage assembly, and a tube transfer assembly. The moving rod is fixedly mounted on one side of the liquid feeding cylinder, and an output end of the moving rod is provided with a piston disc located on the inner side of the liquid feeding cylinder; a suction port is formed on the surface of the liquid feeding cylinder, and an extrusion port is formed on the bottom surface of the liquid feeding cylinder; the tube transfer assembly is fixedly mounted on one side of the liquid feeding cylinder; the tube transfer assembly comprises a transmission box, a driving motor, a main toothed disc, a moving main rod and a tube replacement clamp fixedly mounted at the bottom end of the moving main rod. According to the present invention, an automatic vinegar liquid sampling test structure is provided, vinegar liquid in a brewing tank is pumped out by means of the liquid feeding cylinder and the moving rod, and the replacement of a sample storage tube is executed by means of the sample storage assembly and the tube transfer assembly; and intermittent sampling is carried out in the whole brewing process, so that test in each brewing process is ensured, automatic sampling test is achieved, and the labor costs are reduced.
mv1mv2m1nmn-1n-1), to perform n-th glazing on the surface of the thermal barrier coating, till the width of micro-cracks on the surface is less than 1 μm, and stopping glazing, wherein n=2, 3, 4, …; and step S5, placing the glazed thermal barrier coating in a muffle furnace for pre-sintering to form a sintered layer. The method in the present invention reduces the surface roughness of the thermal barrier coating, improves the hardness and the strain tolerance of thermal barrier coatings, and eliminates cracks formed in a conventional laser glazing process.
C23C 24/10 - Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
86.
MODIFIED POLYPHENYLENE SULFIDE AND MODIFICATION METHOD THEREFOR, POLYPHENYLENE SULFIDE SOLID SEPARATOR, PRE-PREPARED ZINC SALT SEPARATOR AND MANUFACTURING METHOD THEREFOR, INJECTION-READY ZINC-MANGANESE SECONDARY BATTERY AND MANUFACTURING AND APPLICATION METHODS THEREFOR
Provided are a modified polyphenylene sulfide and a modification method therefor, a polyphenylene sulfide solid separator, a pre-prepared zinc salt separator and a manufacturing method therefor, and an injection-ready zinc-manganese secondary battery and manufacturing and application methods therefor. Tetra-chloro-benzoquinone in a polyphenylene sulfide powder is subjected to chlorine reduction and hydrogenation reactions via hydrothermal synthesis to generate chlorocatechol structural molecules, and the adsorption performance of the polyphenylene sulfide-based solid separator on harmful molecules is improved; also, upon integration into a battery assembly process, weld points are protected, and in a chemical synthesis process, a method of firstly injecting an aqueous solution electrolyte and then adding an alcohol is utilized, the cycling stability of the battery is improved, and the operating temperature interval of the battery is widened. In the manufacturing process of the pre-prepared zinc salt separator, an electrolyte zinc salt is pre-placed into a composite glue solution of a solid separator and upper and lower supporting separators, the problem where high-concentration electrolytes in zinc-manganese secondary batteries find difficulty in uniformly infiltrating into battery electrode pieces is solved, and the production efficiency and the battery performance of zinc-manganese secondary batteries are improved.
A cryogenic laser shock device and method are provided. The device includes a cooling box, a transition chamber, a laser shock chamber, and a master control system. In the method, a sample is cooled by the cooling box, a temperature of the sample is measured in real time by a cryogenic probe, gas in the cooling box is pumped out after the temperature of the sample is stabilized to a set temperature, the cooling box is moved to the laser shock chamber in a vacuum state, and a cryogenic laser shock is implemented through cooperation of a mechanical arm and a three-dimensional motion platform.
A precision machining device for a sphere and a machining method. The machining device comprises a cavity, an abrasive particle flow (10), and a circulation device; a workpiece (6) is placed in the cavity; the cavity is composed of two hollow hemispheres (7, 9); the two hemispheres (7, 9) are each provided with a main flow channel; the main flow channels are communicated with the cavity; one end of each of the main flow channels of the two hemispheres is connected to the circulation device; and the abrasive particle flow (10) is made to grind the workpiece (6) by means of the circulation device. The plurality of main flow channels are uniformly distributed in the hemispheres (7, 9), each main flow channel is provided with a plurality of branch flow channels communicated with the cavity, and the branch flow channels gradually shrink in the flow direction. According to the machining method, precise machining is achieved by means of different abrasive particle flow pressures on the surface of the workpiece, so that the shape precision of the workpiece can be effectively improved.
B24B 31/116 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
B24B 31/112 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor involving other means for tumbling of work using magnetically consolidated grinding powder, moved relatively to the workpiece under the influence of pressure
89.
Device for precision machining of sphere, and method for precision machining of sphere using same
A sphere precision machining device and a machining method comprise a cavity, an abrasive grain stream, and a circulation device. The cavity holds the workpiece, and comprises two hollow hemispheres, each of said two hemispheres being provided with a main flow channel. Said main flow channel is connected to the cavity. One end of the main flow path of each of the two said hemispheres is connected to a circulating means by which a stream of abrasive grains is made to grind the workpiece. A plurality of main flow channels are disposed homogeneously inside the hemisphere, each of said main flow channels being provided with a plurality of branch flow channels connected to the cavity, said branch flow channels tapering in the flow direction. The present disclosure uses the difference in abrasive grain flow pressure on the surface of the workpiece to achieve precision machining.
B24B 31/116 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor involving other means for tumbling of work using plastically deformable grinding compound, moved relatively to the workpiece under the influence of pressure
B24B 31/00 - Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is looseAccessories therefor
B24C 1/08 - Methods for use of abrasive blasting for producing particular effectsUse of auxiliary equipment in connection with such methods for polishing surfaces, e.g. by making use of liquid-borne abrasives
B24C 3/32 - Abrasive blasting machines or devicesPlants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
B24C 9/00 - Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
90.
MULTI-FREQUENCY ULTRASOUND COUPLED MULTI-NOZZLE FOOD ADDITIVE MANUFACTURING DEVICE AND METHOD
A multi-frequency ultrasound coupled multi-nozzle food additive manufacturing device and method are provided. A multi-frequency ultrasound coupling printing system is set up on a multi-nozzle additive manufacturing device, which improves the rheological properties of high-viscosity and large-particle food ink by generating a cavitation effect through the high-frequency vibration of ultrasound and improves the printability of food ink while retaining the nutrients and texture of the food ink. The application of the multi-frequency ultrasound coupled multi-nozzle device to food additive manufacturing enables it to achieve a smaller nozzle diameter and higher printing speed than conventional additive manufacturing systems, which improves the printability of the food ink while realizing large-scale production. The multi-frequency ultrasound coupled multi-nozzle food additive manufacturing device and method can also improve the digestive and functional properties of foodstuffs by utilizing multi-frequency ultrasound, and enhance the sensory and nutritional qualities of the printed products.
A device for measuring and calibrating the ground pressure of the seeding depth limiting wheels includes: a main body, connected to a pair of depth limiting wheels; a pressure adjusting member, arranged on the main body and configured to adjust a pressure of the depth limiting wheels to ground; a pressure sensor, arranged on the main body and configured to detect an actual pressure output by the pressure adjusting member; and a pressure acquisition calibrator, configured to detect a ground pressure applied by the depth limiting wheels on ground; and automatically fit a plurality of actual pressures and a plurality of ground pressures to establish a model for measuring ground pressure of a pair of depth limiting wheels. The device can automatically acquire a plurality of actual pressures and a plurality of ground pressures to establish a model for measuring ground pressure of a pair of depth limiting wheels.
G06F 7/70 - Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radixComputing devices using combinations of denominational and non-denominational quantity representations using stochastic pulse trains, i.e. randomly occurring pulses the average pulse rates of which represent numbers
A01C 5/06 - Machines for making or covering drills or furrows for sowing or planting
A01C 7/20 - Parts of seeders for conducting and depositing seed
92.
MECHANICAL GEARBOX DEVICE CAPABLE OF POWER-UNINTERRUPTED GEAR SHIFTING
A mechanical gearbox device capable of power-uninterrupted gear shifting, comprising a built-in transmission shaft, a hollow transmission shaft, a gearbox housing, a 1st-2nd-gear shifting engaging sleeve, a 1st-gear duplex gear, a 2nd-gear duplex gear, a 3rd-4th-gear shifting engaging sleeve, a 3rd-gear duplex gear, a 4th-gear duplex gear, a torque transmission adjusting device input shaft, a left control oil way, a torque transmission adjusting device, a right control oil way, a torque transmission adjusting device driven disc output shaft, an output driving gear, a connecting shaft, a gearbox output shaft, an output driven gear, a 1st-gear driven gear, a 2nd-gear driven gear, a 3rd-gear driven gear and a 4th-gear driven gear. During gear shifting, power of the hollow transmission shaft is cut off by means of a main clutch of a vehicle, so as to facilitate gear engagement; and power is continuously provided for the gearbox output shaft by means of the built-in transmission shaft and the torque transmission adjusting device, so as to maintain power output of the gearbox during mechanical gear shifting, thus achieving power-uninterrupted gear shifting of mechanical gearboxes.
F16H 3/72 - Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
93.
Photoelectric detection model transfer and sharing method and internet of things monitoring and evaluation system based on cloud service
A photoelectric detection model transfer and sharing method and an Internet of Things monitoring and evaluation system based on a cloud service are provided. The transfer and sharing method includes: invoking a temperature compensation model and a spectrum transfer model to calibrate spectrum information of agricultural product samples, and invoking a detection model to compute the calibrated spectrum information to obtain detection results of the agricultural product samples. The Internet of Things monitoring and evaluation system calibrates spectrum information by using a spectrum transfer and sharing method, invokes a detection model for computing, and returns detection results to a detection terminal in real time, thereby realizing remote monitoring and evaluation of the quality of agricultural products.
The present invention relates to the field of water treatment. Disclosed is a high-flux reverse osmosis treatment device having a rotary hydrophobic membrane. According to the device provided by the present invention, a hydrophobic filter membrane covers the outer wall of an inner rotary cylinder having a flow-guide collection tank, and a filtrate is guided out through a central channel. Moreover, a new principle of "time dimension selectivity" is introduced as the theoretical basis of the present invention, which allows the pore diameter of a reverse osmosis membrane to be much larger than the size of a filter, such that it is convenient to process and produce the membrane, the phenomena of concentration polarization and membrane pollution of a membrane surface in the separation process are well solved, the permeation flux of the membrane is remarkably increased, the rejection rate of substances is not low, and the separation performance in water treatment is greatly improved.
The present invention belongs to the technical field of nanoscience and fluorescent sensing, and particularly, relates to a preparation method for a paper-based sensor for detecting ammonia gas and use thereof. Firstly, Zn(PA)(BPE) is prepared, and ammonia gas is adsorbed by means of utilizing a porous structure on the surface of Zn(PA)(BPE), so that the reaction sensitivity to ammonia gas is improved; then, a Zn(PA)@CNQDs ratio-type fluorescent substance is further formed by means of embedding Zn(PA)(BPE) and CNQDs, and finally dissolved in ultrapure water to obtain a solution; and the solution is dropwise added to a filter paper, and is loaded on the filter paper by means of nitrogen purging, so that the ratio-type fluorescent paper-based sensor is obtained. The present invention utilizes the embedding of Zn(PA)(BPE) and CNQDs to form the ratio-type fluorescent paper-based sensor, which not only enables CNQDs to be more stable, but also improves the background anti-interference capability for detecting ammonia gas. The present invention has relatively high selectivity and sensitivity, and has good application prospects in the process of detecting the spoilage and deterioration of meat products.
3-x3-x3-x3-x thin film is formed by tungsten oxide containing oxygen vacancies. The oxygen vacancies contained in tungsten oxide in the present invention have the capability of decomposing water, so that the gas-sensitive material can resist humidity interference. Moreover, the nanoscale Pd cluster has a selective catalytic effect on hydrogen. Therefore, the sensor made of the hydrogen gas-sensitive material provided by the present invention has the capability of resisting humidity interference, the response sensitivity of the sensor to hydrogen does not change along with the change of humidity, and the sensor has excellent selectivity for hydrogen.
B82Y 40/00 - Manufacture or treatment of nanostructures
B82Y 30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites
B82Y 15/00 - Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
97.
Variable-rate spray control system based on annular application structure and tree canopy volume calculation method thereof
The present disclosure provides a variable-rate spray control system based on an annular application structure and a tree canopy volume (TCV) calculation method thereof. The TCV calculation method includes: acquiring in real time, by using vertical/horizontal scanning two-dimensional (2D) LiDAR, point cloud data of a variable-rate sprayer in motion in an orchard environment; acquiring speed information of the variable-rate sprayer by using a speed sensor; dividing spraying regions according to an angle at which contacts of nozzles on an annular application structure are mutually spaced on an arc; filtering interferences by setting a threshold range, calculating a sector area of a tree canopy according to trunk distance information from the horizontal LiDAR and point cloud information from the vertical LiDAR within the threshold range, and calculating a TCV in combination with the information of the speed sensor and a scanning cycle of the vertical LiDAR.
B05B 12/12 - Arrangements for controlling deliveryArrangements for controlling the spray area responsive to condition of liquid or other fluent material discharged, of ambient medium or of target responsive to conditions of ambient medium or target, e.g. humidity, temperature
G01S 17/89 - Lidar systems, specially adapted for specific applications for mapping or imaging
The present invention provides a doped colloidal metal oxide quantum wire, a preparation method therefor, a gas sensor, a gas sensor array and uses, and relates to the technical field of gas sensors. The present invention comprises mixing a main metal precursor, a doped metal precursor, an alcohol solvent and a fatty acid surfactant to carry out a solvothermal reaction, so as to obtain a doped colloidal metal oxide quantum wire, main metal elements in the main metal precursor comprising Sn, Zn, W, In and the like, and doped metal elements in the doped metal precursor comprising V, Nb, Ta and the like. A gas sensor constituted by using as a gas-sensitive material the doped colloidal metal oxide quantum wire provided by the present invention can work at room temperature, and has a lower limit of ppb level for gas detection. The gas sensor also has a capability of resisting to humidity interference. Assembling the gas sensors constituted by the doped colloidal metal oxide quantum wires into an array may selectively recognize and detect multiple gases.
G01N 27/12 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluidInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon reaction with a fluid
99.
LASER-ARC AND INTERLAYER MECHANICAL REGULATION AND CONTROL COMPOSITE MANUFACTURING METHOD FOR AEROSPACE ALUMINUM ALLOY COMPONENT
A laser-arc and interlayer mechanical regulation and control composite manufacturing method for an aerospace aluminum alloy component. First, a localized controllable-pulse laser (3) is used as a heat source, and is combined with an electric arc to melt an aluminum alloy wire, so that laser absorptivity and utilization rate of a liquid melt pool are improved; next, interlayer ultrasonic rolling treatment is synchronously used in a dynamic recrystallization temperature zone of a deposition layer.
B23K 26/348 - Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups , e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
A tilt rotor-based linear multi-rotor unmanned aerial vehicle (UAV) structure for crop protection and a control method thereof are provided. The tilt rotor-based linear multi-rotor UAV structure for crop protection includes main lift power structures, tilt power structures, and a main frame structure, where the main frame structure is located in a middle; the main lift power structures are distributed at left and right ends of the main frame structure; and the tilt power structures are symmetrically distributed between the main frame structure and the main lift power structures. A vector power structure is adopted to ensure flexible attitude changes and smoother and more accurate UAV operations, and improve the operation efficiency. Meanwhile, the tilt rotor-based linear multi-rotor UAV structure is adapted to the complex working environment in China's ever-changing terrains.
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