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100results about How to "Anisotropic" patented technology

Remote sensing image classification method based on attention mechanism deep Contourlet network

The invention discloses a remote sensing image classification method based on an attention mechanism deep Contourlet network, and the method comprises the steps: building a remote sensing image library, and obtaining a training sample set and a test sample set; then, setting a Contourlet decomposition module, building a convolutional neural network model, grouping convolution layers in the model in pairs to form a convolution module, using an attention mechanism, and performing data enhancement on the merged feature map through a channel attention module; carrying out iterative training; performing global contrast normalization processing on the remote sensing images to be classified to obtain the average intensity of the whole remote sensing images, and then performing normalization to obtain the remote sensing images to be classified after normalization processing; and inputting the normalized unknown remote sensing image into the trained convolutional neural network model, and classifying the unknown remote sensing image to obtain a network output classification result. According to the method, a Contourlet decomposition method and a deep convolutional network method are combined, a channel attention mechanism is introduced, and the advantages of deep learning and Contourlet transformation can be brought into play at the same time.
Owner:XIDIAN UNIV

Graphene/metal composite material and preparation method thereof

The invention discloses a graphene / metal composite material and a preparation method thereof. The method comprises the following steps of: (1) weighing a metal rod and a high-purity carbon rod in percentage by mass, wherein the high-purity carbon rod accounts for 1%-30%; (2) clamping the cleaned metal rod on an upper chuck and a lower chuck of a withdrawing system of a directional solidification furnace adopting a floating zone method, clamping the high-purity carbon rod on a clamp beside the withdrawing system, and enabling the bottom end of the high-purity carbon rod to be in contact with amelting zone of the metal rod; and (3) performing vacuum-pumping on the directional solidification furnace adopting the floating zone method, performing directional solidification on the metal rod, controlling length of a melting zone to be 1-50 mm, moving the metal rod from top to bottom at a rate of 1-5000 [mu]m / s, and rotating along the axis of the withdrawing system; and enabling the bottom end of the high-purity carbon rod to be within the melting zone of the metal rod all the time. According to the graphene / metal composite material obtained by the method disclosed by the invention, carbon exists in a metal lattice in the form of graphene, and the two-phase interface is good in combination, so that conductivity of the material is favorably improved.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Production method for nanocrystalline anisotropic rare earth permanent magnetic powder

The invention belongs to the technical field of rare-earth permanent magnetic material, aiming to solve the problem of weak magnetic property of nano-sized rare-earth permanent magnet powder produced according to prior art. The invention is characterized in that the rare earth-transition metal permanent magnet alloys are processed by vacuum induction melting and vacuum rapid quenching; then the quenched flakes must be hot-rolled at least one time with hot rolling temperature from 500DEG C to 1000DEG C; and the linear velocity of hot roller reaches 0.5to 55.0m / s; compared with the temperature before hot rolling, the final thickness of the flakes after hot rolling is reduced by 10 to 95%; the flakes is made into magnetic texture by controlling the thickness reduction of the flakes with the direction of the magnetic texture parallel with the direction of hot rolling power; the crystalline grain of the flakes are nano-grains; then the hot-rolling flakes are broken; the average particle size of the magnetic powder is 3to 30Mu m. Each particle has magnetic texture; then the magnetic power is graded according to size; finally, the graded magnetic powder is packed by following methods respectively: non-vacuum package, vacuum package or package by charging protective air under the condition of vacuum. The magnetic powder is of anisotropic and high magnetic properties.
Owner:NINGBO UNIV

Anisotropism wavelet image processing method based on thermonuclear pyramid

InactiveCN103700064AImage smoothingMulti-scale conceptImage enhancementMultiscale decompositionPartial differential equation
The invention provides an anisotropism wavelet image processing method based on a thermonuclear pyramid. According to the method, at the theoretical part, wavelets are obtained through thermonuclear difference between adjacent layers of an image pyramid, and are equal to negative one order derivation of a thermal diffusion partial differential equation, relative to time; at an implementation part that: 1), mapping images to be a weight undirected graph, coding structural characteristics into a Laplacian matrix, and achieving anisotropism thermal diffusion; 2), dividing the images into image subblocks with overlaps, calculating wavelets of all image blocks in a parallel mode, reducing calculated amount by using a block overlapping method and effectively eliminating blocking effects after recombination; 3), adopting Krylov subspace technology to accelerate image block wavelet transform calculation, and avoiding time-consuming matrix spectral factorization. At the application part, the method is applied to image processing with structural protecting function. The data related anisotropism wavelet system provided by the invention achieves structure protection multiscale decomposition for the images, and shows excellent performance in various image processing applications.
Owner:BEIHANG UNIV

Orthotropic steel bridge deck ductile concrete composite structure and construction method

The invention discloses an orthotropic steel bridge deck ductile concrete composite structure and a construction method, and relates to the technical field of bridge engineering. The key points of thetechnical scheme are as follows: the orthotropic steel bridge deck ductile concrete composite structure comprises an orthotropic steel bridge deck, a grid mesh and a tough concrete layer; a pluralityof longitudinal ribs are transversely arranged on the bottom surface of the steel bridge deck at intervals; shear nails are arranged on the top surface of the steel bridge deck; a plurality of criss-cross erecting rib perforated plates are arranged on the top surface of the steel bridge deck at equal intervals; and an SBS modified asphalt SMA pavement layer is paved on the top surface of the tough concrete layer. The combined structure can improve the overall rigidity of the steel bridge deck and improve the fatigue problem of the steel bridge deck system and has the advantages of light self-weight, high bearing capacity and simple structure, and can ensure that the steel bridge deck has a wide application range and good stress performance under various conditions; bridge construction cost is saved, and benefits are remarkable. The national key research and development plan subsidy is obtained, the subject name is the key technical research of the efficient construction of the combined structure urban bridge, and the subject number is 2017YFC070348.
Owner:中交三公局第一工程有限公司

Carbon fiber reinforcement aluminum alloy mortise and tenon structure and preparation method thereof

The invention discloses a carbon fiber reinforcement aluminum alloy mortise and tenon structure which comprises a mortise piece and a tenon piece, wherein the mortise piece is provided with a mortise; a tenon connection part of the tenon piece is inserted into the mortise; at least one inner surface of the mortise is coated with carbon fiber composite cloth; and the tenon connection part is in interference fit with the mortise coated with the carbon fiber composite cloth. The carbon fiber is high in axial strength and module, low in density, high in specific performance, good in fatigue resistance, low in thermal expansion coefficient and good in corrosion resistance, has no creep deformation, has superhigh temperature resistance at the non-oxidizing environment and has anisotropism, and the specific heat and conductivity of the carbon fiber is between the specific heat and conductivity of nonmetal and the specific heat and conductivity of metal. With the utilization of the carbon fiber composite cloth to reinforce the mortise and tenon structure, a tenon pulling phenomenon of the mortise and tenon structure can be retarded effectively. The carbon fiber reinforcement aluminum alloy mortise and tenon structure has the characteristics of high strength and rigidity, reduction in energy consumption ability, and the like, and can be widely applied to the fields of automotive industry, sports equipment, fire protection, and the like.
Owner:SUN YAT SEN UNIV

Deformable permanent magnet alloy, deformable permanent magnet alloy thin strip and preparation method thereof

The invention provides deformable permanent magnet alloy, a deformable permanent magnet alloy thin strip and a preparation method thereof. The deformable permanent magnet alloy comprises the following components in percentage by weight: 65-75 percent of Cu, 15-20 percent of Ni, 7-10 percent of Fe and 1-5 percent of Cr. The preparation method of the deformable permanent magnet alloy thin strip comprises the following steps: weighing the alloy components according to the weight ratio, performing vacuum induction melting on raw materials and casting into a copper-nickel-iron-chromium alloy ingot; forging the alloy ingot; hot-rolling the cast alloy ingot at a temperature of 600-900 DEG C and preparing into the alloy thin strip of 0.1-0.3 mm; tempering the alloy thin strip for 0.5-2 hours at a temperature of 500-650 DEG C. Through the design of the alloy components, a small quantity of Cr is added, so that the oxidation resistance of a permanent magnet material is increased, and meanwhile, the coercive force is increased to a certain degree; the thin strip is prepared through the forging, hot-rolling and tempering processes, so that the processes are simplified, the implantation is easy, and the preparation cost is low.
Owner:山东麦格智芯机电科技有限公司

Lacquered wood press-attaching door and preparation method

The invention provides a lacquered wood press-attaching door and a preparation method. According to the lacquered wood press-attaching door, a door leaf comprises a lacquered faceplate, a door leaf core plate and a homochromous veneer edgeband. The lacquered faceplate and the door leaf core plate are in splicing connection. The homochromous veneer edgeband and the periphery of the door leaf are insplicing connection. The lacquered faceplate refers to a finished product plate with the surface being provided with an overcoating and UV paint. The preparation method includes the following steps that the blanked lacquered faceplate is prepared; a bridge hole plate and wood beams are blanked, and density boards are pressed onto the two surfaces of the bridge hole plate and the wood beams with glue to be made into the door leaf core plate after drying; the lacquered faceplate is spliced onto the surface of the door leaf core plate, and the four edges of a door leaf semi-finished product areclosed with the edgeband; and a door leaf finished product of the lacquered wood press-attaching door can be obtained through the steps. According to the lacquered wood press-attaching door and the preparation method, the lacquered faceplate and the door leaf core plate are combined and then edge banding is conducted, so that the manufacturing process steps are simplified, the painting technologyis omitted particularly, the production technology is more environmentally friendly, production time is greatly shortened, and assembly line processing can be better achieved.
Owner:北京爱构筑家居科技有限公司

Flexible cable for communication power supply

InactiveCN105047263AExtended service lifePrevent defects caused by smoothnessNon-insulated conductorsFlexible cablesIsooctyl acrylateFiber
The invention discloses a flexible cable for a communication power supply. The flexible cable comprises a circular high-intensity carbon fiber core, Z-shaped conductors are twisted at the external surface of the circular high-intensity carbon fiber core and form an inner conducting layer, trapezoidal conductors are twisted at the external surface of the inner conducting layer and form an outer conducting layer, a polyethylene insulating tape wraps the external surface of the outer conducting layer, a halogen-free polyolefin elastomer insulating layer wraps the external surface of the polyethylene insulating tape, and an adhesive filling portion is arranged in an aluminum alloy layer and placed among carbon fibers. The adhesive filling portion is composed of 100 parts of maleic anhydride, 15-20 parts of butyl acrylate monomer, 20-30 parts of isooctyl acrylate, 8-10 parts of n butanol, 2-3 parts of dibenzoyl peroxide, 1.5-2.5 parts of triethylene tetramine, 1-3 parts of graphite particles, 3-5 parts of aluminum powder and 8-12 parts of diatomite by weight. The flexible cable is high in tensile intensity, current carrying capacity and flexibility, easy to bend, and tight in structure; and the minimal bending radius is reduced to 3 times of the cable diameter.
Owner:JIANGSU HENGTONG WIRE & CABLE TECH
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