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46results about How to "Strong feasibility" patented technology

Pool ecological breeding method for coilia nasus by filling river water to accept fries

The invention relates to a pool ecological breeding method for coilia nasus by filling river water to accept fries, and belongs to the technical field of fry accepting and breeding. The method is characterized by comprising the following process steps: (1) selecting a soil pool along the river; (2) using a silk cover net to set a special fry accepting area; (3) when the fry amount reaches 1 to 3 fish per liter, adopting a water pump to accept the fries in time; (4) adopting the measures of pouring soybean milk and throwing ovigerous shrimps by a netlike box to breed natural food organisms; (5) when the temperature of water in the pool is below 10 DEG C, carrying out separation and wild removal operations for advanced fry in the fry accepting pool; (6) adopting the ecological technical measures such as throwing fermented organic fertilizer, stocking juvenile shrimps, breeding silver carp and the like to strictly adjust and control water quality and breed the coilia nasus in a special pool; and (7) breeding the coilia nasus to a period of two winters, and fishing the coilia nasus to sell according to the market demand. The method effectively breaks through the pool breeding problem of the coilia nasus, obtains the coilia nasus which has the same quality as wild coilia nasus, further achieves artificial breeding of the coilia nasus on a deeper level, builds a good ecological environment, and can remarkably improve the survival rate of the fries.
Owner:江阴市申港三鲜养殖有限公司 +1

Three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower electrode material and preparation method and application thereof

The invention relates to a three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower electrode material and a preparation method and application thereof. The diameter of the three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower electrode material is 5-10 micrometers, the thickness of a carbon-clad NaTi<2>(PO<4>)<3>/C nanosheet subunit is only 1-5 nanometers, mesopores with pore diameters of 2-30 nanometers are formed in the carbon-clad NaTi<2>(PO<4>)<3>/C nanosheet subunit, the thickness of a surface carbon layer is 2-5 nanometers, and the nanosheet subunits are in over joint to form a three-dimensional conductive network. The three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower electrode material has the advantages that the three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower is prepared by a simple and practical solovothermal method combined with a high-temperature calcination method, and is endowed with excellent high rate performance and stable long-circulation capability when taken as a positive electrode active material of a sodium ion battery. The process is simple, the three-dimensional graded carbon-clad NaTi<2>(PO<4>)<3>/C micrometer flower electrode material is high in practicable and is high in safety coefficient, the requirement on a device is low due to the adoption of the solovothermal method and the calcination processing, production can be expanded, and market promotion is promoted.
Owner:WUHAN UNIV OF TECH

EGR cooler heat exchange efficiency detection system

The invention discloses an EGR cooler heat exchange efficiency detection system which comprises an engine, a dynamometer, an air inlet system, a fuel supply system, a cooling circulation water controller, a fuel consumption meter, an air flow meter, a temperature sensor, a pressure sensor, and a control device. The controlled end of the engine is connected to the dynamometer. The engine is connected to the fuel supply system and the air inlet system. The exhaust port of the engine is connected to an EGR cooler to be detected through an exhaust main pipe. The controlled end of the EGR cooler to be detected is connected to the cooling circulation water controller. The control device is connected to the dynamometer, the air inlet system, the fuel supply system, and the controlled end of the cooling circulation water controller. The data collection end of the control device is connected to the fuel consumption meter, the air flow meter, the temperature sensor and the pressure sensor. The system has the advantages of high feasibility, simple operation and low cost, the temperature of exhaust gas is controllable in the detection process, the EGR cooler heat transfer efficiency which is in accordance with an EGR cooler actual use condition can be tested, and a basis can be provided for the engine reasonable matching and engine efficiency improvement.
Owner:WUXI LONGSHENG TECH

Operation method of combined heat and power system containing wind and light renewable energy

The invention discloses an operation method of a combined heat and power system containing wind and light renewable energy. The method includes the following steps that: the optimization objective andconstraint function of the system containing the wind and light renewable energy are set, and an optimization model is established; a Monte Carlo random sampling-based multi-objective optimization algorithm is adopted to solve the optimization model, and a plurality of Pareto optimal solutions can be obtained; and decision maker preference information is set, and one of the Pareto optimal solutions is selected as the operation plan of the combined heat and power system. According to the method of the present invention, the multi-objective optimization algorithm is adopted to optimize the combined heat and power system with factors such as heat and power load and the uncertainty of renewable energy power generation considered, and therefore, the method accords with actual conditions, and is more feasible; the evolutionary multi-objective optimization algorithm is adopted to obtain a set of Pareto optimal solutions which have their respective advantages, a decision maker can select andimplement the operation plan of the combined heat and power system according to different situations. The method of the invention is used for calculating the optimal operation plan of the combined heat and power system.
Owner:FOSHAN UNIVERSITY +1

Ship target combined detection method based on satellite AIS and infrared camera

The invention discloses a ship target combined detection method based on a satellite AIS and an infrared camera, and the method comprises the steps: starting a satellite AIS load, receiving an AIS signal of a ship target, analyzing the AIS information on a satellite in real time, and screening out a key ship target according to an AIS key target library stored on the satellite; according to the infrared camera strict imaging model, determining the observation time and area of the key ship target and the observation angle of the infrared camera, and strating the infrared camera to perform imaging and download an image; preprocessing the downloaded infrared image, and performing ship target detection and feature extraction according to the preprocessed infrared image; carrying out space-timematching, target association and data fusion on satellite AIS and infrared image detection results. According to the ship target combined detection method based on the satellite AIS and the infraredcamera, target association is carried out on the satellite AIS data and the detection result of the infrared image, a fusion result is output, effective discovery of a non-cooperative ship target is achieved, and meanwhile whether AIS information is correct or not is verified.
Owner:NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI

Connection structure of wood frame column in multi-story and tall wood structure

The invention discloses a connection structure of a wood frame column in a multi-story and tall wood structure. The connection structure comprises a wood column, prefabricated grooves, embedded type steel connection pieces, bolt holes and bolts, wherein the wood column is divided into an upper column and a lower column, and connection nodes of the upper column and the lower column are positioned at positions which are as high as the half storeys of adjacent upper and lower layers; the prefabricated grooves with identical sizes and depths are formed in two splicing sections of the upper column and the lower column; the embedded type steel connection pieces are mounted in the prefabricated grooves; the bolt holes are formed in the outer walls of the prefabricated grooves and the embedded type steel connection pieces; the bolts penetrate through the bolt holes and are tightened, so that the upper column and the lower column are connected to form the entire long wood column. According to the connection structure, short columns are used as the wood column connection nodes at the positions which are as high as the half storeys of the adjacent layers and then are spliced to reach a required height, but the intensity and the whole performance of the wood column cannot be reduced by splicing; therefore, the wood column can be either produced and spliced in a factory or spliced on the site. The connection structure improves the construction efficiency, is high in feasibility and can be well applied to actual engineering.
Owner:NANJING UNIV OF TECH

Modeling method of unmanned aerial vehicle collision model based on four dimensional coordinate

The invention relates to a model method of an unmanned aerial vehicle collision model based on a four dimensional coordinate. The method includes the following steps that initial parameter informationof an unmanned aerial vehicle and an invasion vehicle is acquired; relative movement situation of the unmanned aerial vehicle and the invasion vehicle is determined, the invasion vehicle without thepossibility of invasion is excluded; coordinates of the closest points in the movement trajectory of the unmanned aerial vehicle and invasion vehicle and time required to reach the closest point respectively are calculated; the shortest distance between the unmanned aerial vehicle and invasion vehicle is calculated; the shortest distance between the unmanned aerial vehicle and invasion vehicle iscompared with the data of an unmanned aerial vehicle collision box, the collision possibility of the invasion vehicle is judged; and the initial parameter information and historical parameter information of the unmanned aerial vehicle and the invasion vehicle are four dimensional coordinate information including three dimensional space positions and velocity. The data is updated and analyzed in real time by adopting a four dimensional coordinate analysis method with real-time velocity added. It is avoided that a defect of speed differences between the unmanned aerial vehicles is not consideredin the prior art, and the result shows that the method is more suitable for the unmanned aerial vehicle and has strong feasibility.
Owner:HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY

Unauthorized random access method in multi-cell large-scale MIMO system

The invention discloses an unauthorized random access method in a multi-cell large-scale MIMO system, and the method comprises the following steps: S1, establishing a pilot frequency multiplexing mechanism by utilizing a frequency multiplexing mode, and enabling adjacent cells to select different groups of pilot frequencies to realize pilot frequency orthogonality; S2, calculating an optimal pilot frequency length and a user random access back-off probability by taking maximization of the average spectrum efficiency of each cell as a target; S3, enabling each user to perform the random delay activation according to the backoff parameter broadcasted by the base station, enabling the activated user to randomly select a pilot frequency from the pilot frequency pool of the cell and sending the pilot frequency to the base station; S4, enabling the base station to identify the cross-cell conflict users by using the signal intensity difference, determining that the access of the unidentified users fails, and waiting for the next time slot to initiate access again. According to the method, the user access efficiency in a massive user scene can be remarkably improved, the overall spectrum efficiency of the system is greatly improved, and the method has relatively high practical feasibility and can be practically applied to an actual communication scene.
Owner:NANJING UNIV OF POSTS & TELECOMM

Flexible cable breaking force testing device and method

The invention discloses a flexible cable breaking force testing device and method.The flexible cable breaking force testing device comprises an upper clamp and a lower clamp which are oppositely arranged face to face, the distance between the upper clamp and the lower clamp is adjustable, and the two ends of a flexible cable with the breaking force to be tested are fixedly installed on the upper clamp and the lower clamp respectively, the flexible cable with the tensile strength to be tested between the upper clamp and the lower clamp is vertically placed, the upper clamp and the lower clamp are both connected with the driving mechanism, and the driving mechanism drives the upper clamp and the lower clamp to move towards or away from each other, so that the flexible cable with the tensile strength to be tested is snapped, The flexible cable breaking force testing device and method, provided by the invention, are self-created devices, can quickly test the tensile strength of the cable, are simple in overall structure and high in feasibility, do not occupy a large amount of space, are suitable for testing the tensile strength of single-core rubber and plastic flexible cables with fifth and sixth types of conductors with outer diameters of 20mm and below, and are suitable for industrial popularization and application.
Owner:FAR EAST CABLE +2

Preparation method of high-performance noble metal catalyst

InactiveCN109174086AAddresses preprocessing and prevents inactivation functionsStrong feasibilityMetal/metal-oxides/metal-hydroxide catalystsChemistryDistillation
The invention discloses a preparation method of a high-performance noble metal catalyst. The method comprises the following steps: 1, adding polyvinylpyrrolidone to anhydrous ethanol, performing stirring until the polyvinylpyrrolidone is completely dissolved, then adding sodium percarbonate, performing mixing, and carrying out a reduced pressure distilling reaction for 2-4 h to obtain a viscous slurry; 2, adding tourmaline powder to the viscous slurry, performing ultrasonic dispersion for 20-60 min, adding the obtained material into a mold, and carrying out constant-temperature pressurizing curing to obtain a prefabricated block; 3, adding the prefabricated block to anhydrous ethanol, and carrying out microwave soaking for 30-60 min to obtain a residual liquid and a porous block; 4, addingpalladium acetate to the residual liquid, performing ultrasonic dispersion for 2-10 min, and carrying out reduced pressure distillation to form a concentrated liquid; 5, adding the porous block to the concentrated liquid, taking out the porous block, drying the porous block, and carrying out infrared drying for 2-5 h to obtain a prefabricated block; and 6, adding the finally obtained prefabricated block to acetic acid, carrying out an ultrasonic reaction for 20-40 min, taking out the prefabricated block, and drying the prefabricated block to obtain the catalyst. The preparation method has theadvantages of strong feasibility, high recyclability and reusability of the anhydrous ethanol, and meeting of national environmental protection requirements.
Owner:吴亚良
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