178results about How to "Play a key role" patented technology

The invention discloses an air source low-temperature heat pump water heater, comprising a main machine, a thermal storage heat insulating water tank, a controller, a four-way valve, a jet enthalpy increasing compressor, a high-pressure switch, a sleeve condenser, a reservoir, a drying filter, an electromagnetic valve, an assistant thermal expansion valve, an economizer, a main expansion valve, afin evaporator, a gas-liquid separator, a low-pressure switch and a check valve. The D direction of the four-way valve is connected with a gas discharging pipe of the jet enthalpy increasing compressor through the high-pressure switch, the C direction is connected with a gas inlet of the sleeve condenser, the S direction is connected with a gas absorbing port of the jet enthalpy increasing compressor through the gas-liquid separator and the low-pressure switch, the E direction is connected with a gas outlet of the fin evaporator, an outlet of the sleeve condenser is divided into two paths after passing through the reservoir and the drying filter, the main path directly enters the economizer and then enters a liquid inlet of the fin evaporator through a main thermal expansion valve, the secondary path enters the economizer through a liquid path electromagnetic valve and the assistant thermal expansion valve, and then enters an assistant gas inlet of the jet enthalpy increasing compressor through the check valve. The invention can ensure the supply of hot water all day in every season in northern places.

This invention discloses a inversion method for photovoltaic parallel in network, which uses digital signal processor (DSP) as core, the power factor is one and having small harmonic pollution to electric network, said method is a high efficiency and high reliability inversion method.

The invention relates to the technical field of copyright image protection, and provides a decentralized image copyright protection system and method with infringement real-time detection, and the method comprises the following steps of (1), enabling a registered user to upload an image through a client, and enabling an SIFT image feature extraction algorithm in the system to carry out the featuredata collection on the uploaded image; (2) extracting the invariant characteristics, such as visual angle, translation, affine, brightness, rotation, etc., of an existing copyright image by a user through an SIFT algorithm to form a local feature vector set of the image, and taking the local feature vector set as a registered image feature data set; (3) carrying out distributed storage on the feature data sets in the steps (1) and (2) by utilizing an IPFS (Internet Protocol File System), and constructing a network transmission protocol for persistent and distributed storage and file sharing;and (4) performing comparative analysis and calculation, and judging that the image does not accord with the condition of forming a new work. The system and the method provided by the invention have the characteristics of being tamper-proofing, realizing the high safety, permanent preservation and decentralization, being able to trace, being low in cost, etc.

The invention provides a flexible thin-film electrode, which comprises an ultrathin porous carbon nitride nanosheet and a carbon nanotube, wherein manganese oxide is loaded on the ultrathin porous carbon nitride nanosheet as an electroactive material; due to the ultrathin porous carbon nitride nanosheet, the flexible thin-film electrode has a multi-channel structure; and the carbon nanotube is taken as a conductive support and is also taken as a mechanical support, so that the flexible thin-film electrode has a three-dimensional conductive network structure. The invention further provides a preparation method and an application of the flexible thin-film electrode. The method provided by the invention is simple in operation and low in cost. A thin film prepared by the method has the three-dimensional conductive network structure and the multi-channel structure, has good flexibility and excellent electrochemical property, and can be widely used for a high-efficiency energy storage device.

The invention discloses a bone joint spatial angle measurement and function evaluation method and device. The method comprises the following three stages, wherein in the first stage, somatosensory interaction equipment is utilized to acquire bone joint depth information, and a bone joint spatial angle is calculated; the second stage, wherein according to a bone joint spatial angle measurement method in the first stage, through a K-mean clustering algorithm, classification of patients suffering from different bone joint diseases is completed; the third stage, bone joint function visible analysis and evaluation are conducted. According to the bone joint spatial angle measurement and function evaluation method and device, constraint of a traditional medical image imaging technology is shaken off, bone joint point coordinates can be obtained in real time, the angle of the bone joint is measured, updating of the largest joint flexion and extension angle of a figure in a natural activity state is completed, digital analysis and health evaluation of bone joint functions are presented for a user in a visible mode, and a more objective and effective basis is provided for medical staff on determination of a diagnosis and treatment scheme, comparison and evaluation on functions before and after treatment and guidance on rehabilitation.

The invention relates to a mixed organic solvent-thermal method for preparing spherical and hollow spherical BiVO4, and belongs to the technical field of BiVO4. The method comprises the steps of: adding Bi(NO3)3 and NH4VO3 at a stoichiometric ratio of 1:1 to a mixed liquid of ethanol, acetylacetone and concentrated HNO3 at a volume ratio of 9:1:1, sufficiently dissolving, adding oleyl amine at a molar ratio of oleyl amine to Bi(NO3)3 being 15.5:1, adjusting the pH of the solution to 1.5 or 5 with triethanolamine, transferring the solution to a stainless steel autogenous pressure kettle with apolytetrafluoroethylene inner lining at a volume filling degree of 80%, carrying out heat treatment at 100 DEG C for 12 hours, cooling, filtering the product, washing, drying, placing in a muffle furnace, heating to 400 DEG C at a heating rate of 1 DEG C/min and burning for 4 hours. According to the invention, the process is simple; and the target product has a controllable particle appearance and crystalline phase structure, and has excellent application prospects in photocatalysis, electrode materials, pigments, ionic conduction ceramics and other fields.

The invention relates to a three-dimensional porous graphene/attapulgite composite aerogel and a preparation method thereof. The preparation method comprises: preparing a graphene oxide dispersion solution by using a modified Hammers method; modifying attapulgite to obtain a uniform attapulgite suspension; uniformly mixing and stirring the graphene oxide dispersion solution and the attapulgite suspension; carrying out self-assembly on the obtained mixed solution under a low-temperature wet chemical reaction condition to prepare a composite material hydrogel; and washing the composite materialhydrogel, and carrying out freeze drying to prepare the three-dimensional porous graphene/attapulgite composite aerogel. Compared with the method in the prior art, the method of the invention is simple to operate and low in cost, and the prepared novel adsorbent has a three-dimensional hierarchical porous structure and a large specific surface area, is expected to be applied to treatment of various pollutant wastewater, andprovides technical reference for development of high-performance attapulgite-based adsorbent materials.

An optical remote sensing image airplane target detection method based on a rotary positioning network comprises the following steps that S1, a picture is input into a ResNet feature network, multi-dimensional feature information is extracted, and a feature map represented by a multi-dimensional array is obtained; S2, the feature map is inputted into a cumulative feature pyramid network, fusing high-level semantics and bottom-level semantics, and extracting a receiving domain and context information of high-level semantics and target position information of the bottom-level semantics; S3, a RPN sub-network generates an anchor box in the features output by the cumulative feature pyramid network, boundary regression and foreground classification are carried out on the anchor box, and a horizontal proposal box is obtained; and S4, the horizontal proposal frame is sent into a rotation area positioning network for rotation and zooming to generate a rotation target frame, and finally an aircraft target rotation detection frame is outputted. According to the invention, the cumulative feature pyramid network is used for feature fusion, and the rotating rectangular bounding box is adopted,so that the background redundancy after framing of the target is reduced, and the detection result is more accurate in a dense scene.

The invention discloses composite paint with good storage stability and a preparation method of the composite paint. The composite paint is prepared from the following components in parts by weight: 25 to 32 parts of water, 0.3 to 0.5 part of hydroxyethyl cellulose, 0.5 to 0.8 part of defoaming agent, 10 to 15 parts of titanium dioxide, 5 to 8 parts of talcum powder, 22 to 30 parts of heavy calcium powder, 0.5 to 0.8 part of stabilizer LOPON ST, 15 to 20 parts of potassium silicate solution, 5 to 8 parts of emulsion and 0.5 to 1 part of reinforcing agent. The test verifies that the storage stable period of the composite paint is about 6 months, so that the storage stability is greatly improved compared with that of the paint in the prior art.

The invention belongs to the technical field of nuclear reactor material irradiation damage and irradiation effect obtaining, and provides an irradiation deformation calculation method of a zirconium-2.5 niobium pressure pipe in a CANDU (Canada Deuterium Uranium) reactor. The irradiation deformation is calculated by using formulas shown as the accompanying drawing. Epsilon<.> <d> represents the strain rate in the d direction, including the transverse direction and the axial direction, and the unit is 10<-8>h<-1>; Epsilon<.> <thermal> <creep> represents the inner diameter average thermal creep rate of the pressure pipe, and the unit is 10<-8>h<-1>; Epsilon<.> <growth> <d> represents the d direction irradiation elongation rate of the pressure pipe, and the unit is 10<-8>h<-1>; Epsilon<.> <creep> <d> represents the d direction irradiation creep rate of the pressure pipe, and the unit is 10<-8>h<-1>; a built irradiation deformation equation of the zirconium-2.5 niobium pressure pipe in the CANDU reactor can be directly applied to the calculation of irradiation deformation; the equation is used for calculating the axial and radial irradiation deformation of Qinshan pressure pipes; obtained data is compared with in-service inspection data; and relative errors are all in normal distribution (the normal distribution is shown as the accompanying drawing in the abstract: frequency distribution of relative errors of axial irradiation strain speed measured values and calculation values of 760 Qinshan pressure pipes).

The invention provides a bidirectional iteration optimization based image integrating method, comprising the following steps: firstly, inputting already captured visible light and infrared images, computed tomoscaning medical science images and magnetic resonance medical science images into a computer; secondly, processing the visible light and infrared images, the computed tomoscaning medical science images and the magnetic resonance medical science images to calculate correlation matrixes and distance matrixes among the original images and to further set iteration step lengths; thirdly, seeking constrained conditions for iteration based on the image integration determining standards; obtaining an optimized objective function through the variables from the second step and the third step as well as the constrained conditions to realize images after the integration process; With the adoption of the above steps, the bidirectional iteration optimization based image integrating method is capable of achieving good visual effects on the integration of both visible light and infrared images and medical images. Further, with the method, more image information can be maintained in the process of integration; practical problems are properly handled; therefore, the method promises wide use in the market.

Each slope surface runoff field runoff sampler is composed of a sampling bottle system, a floating ball system, a floating ball bouncing system and a water guide groove (5); the sampling bottle systemincludes a sampling bottle (1), a sliding groove (6) and a water guide groove fixed ring (12); the floating ball system includes a floating ball (2), a positioning rod (3) and a floating ball handle(4); the floating ball bouncing system includes a counterweight (7), a dialing rod (8), a lifting rope (9), a dialing ring (10) and the water guide groove (5). When earth surface runoff is produced, the runoff first enters the sampling bottle (1) of a first sampler, when a water level (13) of the sampling bottle (1) rises to a certain height, the floating ball (2) rises, and at the same time, oneend of the water guide groove (5) is lifted up, so the water guide groove is inclined to the reverse direction, a first water storage bottle finishes sampling; the runoff enters sampling bottles of anumber of samplers along the inclined water guide grooves and is sequentially sampled. The samplers are simple in structure and simple to operate, and are the slope surface runoff field runoff samplers which can be used for respectively, equally, continuously and automatically collecting runoff samples in the one-time runoff process at different atmospheric rainfall intensities and in different earth surface runoff intensity periods.

The invention discloses a preparation method of a flexible thin-film electrode. The method takes thermally-treated graphene oxide as conductive support and mechanical support and obtains the flexible thin-film electrode at one step through a vacuum filtration process. The method comprises the following steps: thermally treating graphene oxide aqueous solution to obtain thermally-treated graphene oxide aqueous solution; dispersing electrode active materials in water to form an electrode active material dispersion solution; mixing the thermally-treated graphene oxide aqueous solution with the electrode active material dispersion solution to obtain a mixed solution, filtering and drying, then obtaining the flexible thin-film electrode hybridized by the thermally-treated graphene oxide and the electrode active materials. The method is simple to operate and low in cost. The flexible thin-film electrode prepared by the method and hybridized by the thermally-treated graphene oxide and the electrode active materials has uniform layer structures, is excellent in conductivity and good in flexibility and can be widely used in the fields of batteries, super capacitance materials and green and environmentally friendly vehicles.

The invention belongs to the technical field of chemical environmental protection and provides a calcium carbide furnace tail gas recycling device. A tail gas outlet of a calcium carbide furnace is sequentially communicated with an induced draft fan, a silencing type environment-friendly canister, a cyclone separator, a spray washing tower, a gas compressor and a synthetic reactor; an upper partition board and a lower partition board which divide the inside cavity of the silencing type environment-friendly canister into an absorbing chamber, a noise reduction chamber and a cooling chamber are arranged in the silencing type environment-friendly canister, a plurality of first silencing holes are formed in the upper partition board and the lower partition board, an absorbing liquid is accommodated in the absorbing chamber, at least two silencing pipes communicated with the absorbing chamber and the cooling chamber are arranged in the noise reduction chamber, a heat exchange pipe is arranged in the cooling chamber, a gas inlet communicated with the absorbing chamber is formed in the bottom of the silencing type environment-friendly canister, and a gas outlet communicated with the cooling chamber is formed in the top of the silencing type environment-friendly canister; a sodium bicarbonate water solution is accommodated in the synthetic reactor. Recycling of calcium carbide furnace tail gas is realized, resource waste is avoided, pollution to the environment is avoided, and damage to body health is avoided.

The invention discloses asphalt seam sealant slurry capable of adapting a high temperature environment and a preparation method of same. The asphalt seam sealant slurry is produced from AH-90 asphalt,SBS, a cosolvent, a stabilizer, a softener, resin and wasted rubber powder. Large amounts of the wasted rubber powder and rock asphalt are added to the seam sealant slurry, so that a seam sealant isimproved in high temperature performance and adhesion force, is enhanced in anti-aging property, and is greatly reduced in cost; due to addition of resin, adhesion effect between the seam sealant andseams is greatly improved; due to addition of the SBS in certain block ratio and molecular weight, the seam sealant is definitely improved in high temperature stability and low temperature ductility.Compared with the prior art, the seam sealant is not only improved in high temperature performance and adhesion force but also enhanced in anti-aging property and greatly reduced in cost. Especially,due to the improvement of the high temperature performance, the seam sealant is applicable as a seam sealing material in a high temperature environment.

The invention discloses low-viscosity high-foaming type polyvinyl chloride paste resin PB110-3 and a production method of the low-viscosity high-foaming type polyvinyl chloride paste resin PB110-3. The paste resin is prepared by, by weight, 17000-19000 parts of deionized water, 23000-28000 parts of vinyl chloride monomer, 690-1120 parts of emulsion seeds, 920-1400 parts of microsuspension seeds, 0.17-0.33 part of activating agents, 290-365 parts of emulsifying agents, 20-50 parts of stabilizing agents, 50-100 parts of antifoaming agents and 5-8 parts of buffering agents, wherein the temperature of the deionized water ranges from 40 DEG C to 60 DEG C, the vinyl chloride monomer is composed of vinyl chloride fresh monomer and vinyl chloride liquid monomer, the vinyl chloride liquid monomer accounts for 10% to 20% total quantity of the vinyl chloride monomer, the weight of the emulsion seeds is 3% to 4% total quantity of the vinyl chloride monomer, and the weight of the microsuspension seeds is 4% to 5% total quantity of the vinyl chloride monomer. The low-viscosity high-foaming type polyvinyl chloride paste resin PB110-3 and the production method make up for the blank in the technical field of a low-viscosity high-foaming effect of the polyvinyl chloride paste resin PB110-3, and the application range of the paste resin is enlarged.

The invention relates to a laser high temperature shock-nitridation combined processing device and method. The device comprises a laser high temperature shock system, a nitridation processing system and a control computer. The method comprises the following steps that: the laser high temperature shock system performs primary high-temperature high-pressure nitriding treatment on a material to forma nitride layer of a certain depth on the surface of a sample at first; then a nitriding furnace is decompressed, and the internal temperature of the nitriding furnace is adjusted and maintained according to the temperature requirements of dynamic aging strain of the material; and then the laser high temperature shock system is started for primary shock processing of the surface of the material soas to form high-density dislocations, dislocation tangles and subgrain boundaries on the surface of the material, and a high-temperature phase change reaction between nitrogen atoms and metal atoms is induced. Secondary nitriding and secondary laser shock processing may be performed. The device and method of the invention can greatly improve the high-temperature oxidation resistance, wear resistance, corrosion resistance and high-temperature fatigue performance of the material; and the device is simple in structure, easy to operate and high in processing efficiency.

The invention discloses an intelligent electric wheelchair. The intelligent electric wheelchair comprises a seat, idler wheels, armrests, a remote controller, a driving mechanism, a base, a shear-forktype hydraulic lifting mechanism, a slope sensor and obstacle sensors; the idler wheels comprise the two rear idler wheels and the two universal front idler wheels, the rear idler wheels are rotatably mounted on the left side and the right side of the rear part of the base, and a driving motor is arranged in the base and is in transmission connection with the rear idler wheels; two connecting rods are mounted on the left side and the right side of the front part of the base correspondingly, and the two universal front idler wheels are mounted at the bottoms of the two connecting rods correspondingly; the seat is arranged on the upper part of the base in an up-down movable mode through the shear-fork type hydraulic lifting mechanism; two L-shaped mounting rods are mounted on the front partof the seat, pedals are arranged at the bottoms of the mounting rods, and a heatable leg cushion is further arranged on the mounting rods; and the slope sensor is arranged at the bottom, and the obstacle sensors are mounted around the base. The intelligent electric wheelchair can assist the elderly, the disabled and people with limited mobility in raising for object taking, intelligent control over barrier avoidance and automatic downhill deceleration are achieved, and travel safety is ensured.

The invention relates to the technical field of constructional engineering, in particular to a semi-prefabricating construction process for a concrete thin-wall lower return eave. At present, two construction processes for the thin-wall lower return eave are provided, one process is in-place casting and the other one process is completely prefabricating the component. The cast-in-place lower return eave usually has such quality problems as cracking, crazing and the like; and when a completely prefabricated component is used, the upper part of the lower return eave and a main body structure need to be welded, welding seams are difficult to process, and easy to crack, so that the appearance effects are affected, and the quality is difficult to ensure. The semi-prefabricating construction process disclosed by the inveniton is adopted to split the lower return eave into structural units with simple structures and convenience in construction, so that prefabricating in advance is realized in site, the installation is completed during a construction process of the main work, and the joints are flexibly processed The semi-prefabricating construction process effectively solves the defects in the prior art, can improve the project quality, shortens the construction period, and saves the construction materials and expenses of labour. The semi-prefabricating construction process is particularly suitable for the construction of the thin-wall lower return eave which is 50mm-100mm in thickness.

The invention discloses an installation structure of a cylindrical battery pack. According to the installation structure, two external frame supports are arranged on the two sides of a battery pack; two battery module group supports are arranged in the two external frame supports in a corresponding manner through clamping; the cathode and the anode of each cylindrical battery core in the battery pack are arranged on the two battery module group supports respectively through clamping; two electrical connecting supports are arranged on the two battery module group supports in a corresponding manner through clamping; a switch connection support is connected with the electrical connecting support at the cathode terminals of the cylindrical battery cores; two insulation plates are arranged on the external sides of the two electrical connecting supports; and the two external frame supports are fixedly connected through bolts. The installation structure is used for cylindrical battery cores,is invented based on independent battery core supports, and simple low-cost moulds; mould group assembling mode is flexible; electrical connecting mode is flexible and changeable; dismounting and maintenance cost is relatively low; and automatic and semi-automatic equipment development is low in difficulty.