35results about How to "Maintain structural features" patented technology

The invention discloses a method for preparing phycocyanin from fresh spirulina. The process design is based on convenience, high efficiency and capability of facilitating comprehensive utilization of different components, the fresh spirulina is used as a processing raw material, and the spirulina phycocyanin is prepared through steps of low-temperature wall breakage, ammonium sulfate fractional salting-out, polyethylene glycol 2000/(NH4)2SO4 two-aqueous-phase extraction, ultrafiltration and vacuum freezing drying. With the adoption of the method, the yield of the spirulina phycocyanin is higher, the obtained spirulina phycocyanin is low in polysaccharide content, the purity A620/A280 is about 3.7, the method is applicable to preparation of the phycocyanin from other algae used as raw materials, the biological activity of all components of the spirulina can be well kept during preparation, other obtained separated parts can be further processed, a series of products such as active polysaccharides, chlorophyll, algal protein and the like can be obtained, and the method has the high promotional value and the broad application prospect.

This invention provides one layer column structure cobalt acid lithium electrode materials and tits process method, wherein, the chemical components of the materials are Li(1-2beta)MbetaCoO2 with typical structure ofalpha-NaFeO2. The invention adopts lemon acid sol to gel method and substitutes the lithium ions with metal ion of Zn<2+> or Cd<2+> and then gets the layer column structure cobalt acid lithium through the evenly distribution of the metal ion on the main layer board clamping layer of CoO2.

The invention discloses an image multi-feature fusion-based non-local mean denoising method. The method improves a method for calculating similarity between image blocks in a non-local mean denoising method, and belongs to the field of research of image denoising in image processing; and in a conventional non-local mean method, the similarity between the blocks is measured by adopting a Euclidean distance or a Gaussian weighted Euclidean distance, so that certain defects exist in the mode, dissimilar image blocks are easily introduced, errors are accumulatively caused, structure information of an image cannot be well kept especially in a texture detail region, and the denoising performance is reduced. For the problems, the similarity between the image blocks is calculated according to an LBP texture feature, and the hybrid similarity is calculated in combination with the LBP feature and a grayscale feature simultaneously, so that weight allocation of the similar image blocks is finally determined. The image multi-feature fusion-based non-local mean denoising method is remarkably improved in denoising effect.

The invention provides a preparation method for a spherical cellulose aerogel, which relates to a preparation method for an aerogel. The objective of the invention is to overcome the problems that the phenomena of structure collapse and volume contraction of a conventional cellulose aerogel frequently occur and the specific surface area of an obtained aerogel is small. The method comprises the following steps: 1, putting vegetable fiber in a mixed solution of urea and NaOH and carrying out stirring after refrigeration for formation of a solution so as to obtain a vegetable fiber/alkaline urea solution; 2, mixing trichloromethane with ethyl acetate and then adding glacial acetic acid so as to obtain an organic solution; 3, titrating the vegetable fiber/alkaline urea solution into the organic solution of glacial acetic acid and carrying out ageing so as to obtain a gel; 4, putting the gel into a glacial acetic acid solution for solidification; and 5, replacing a hydrogel successively with absolute ethyl alcohol and tert-butyl alcohol and carrying out refrigeration and freeze-drying so as to obtain the aerogel. According to the invention, the phenomena of structure collapse and volume contraction of an aerogel in the process of drying are overcome, and the prepared cellulose aerogel has low density and a specific surface area of more than 240 m<2>/g.

The embodiment of the invention provides a style migration method and device of a face image, electronic equipment and a storage medium. The method comprises the steps of inputting a to-be-migrated face image into a first convolutional neural network to obtain a style-migrated target face image; wherein the first convolutional neural network is obtained by training an animation face image sample and a real person face image sample according to face features; wherein the human face features comprise a human face region and a human face width; wherein the to-be-migrated human face image is an animation human face image or a real human face image, and correspondingly, the target human face image is a real human face image or an animation human face image, and training the animation human faceimage sample and the real human face image sample through the human face area and the human face width to obtain a first convolutional neural network. According to the invention, style migration processing is carried out on the to-be-migrated face image through the first convolutional neural network to obtain the target face image, bidirectional style migration of the animation face image and thereal face image can be realized, face structure features are maintained, and face deformation is reduced.

The invention provides a safety linkage locking device for a quick valve of a pressure vessel. The safety linkage locking device comprises a locking hook, inclined iron, inclined face pad iron, a first hinge pin, a second hinge pin, a pull rod, a sliding ring, a third hinge pin, a fixing lifting lug and an air cylinder or oil cylinder. The sliding ring is driven by the air cylinder or the oil cylinder. The locking hook comprises the hook head end, the hook tail end and a bending rod connecting the hook head end and the hook tail end. The inclined iron is fixedly arranged at the hook head end. The inclined face pad iron is installed on a flange of the pressure vessel. The inclined face pad iron is matched with the inclined iron and the locking hook to form a hook mechanism. The hook tail end is connected with the sliding ring through the second hinge pin. The bending rod is connected with one end of the pull rod through the first hinge pin, and the other end of the pull rod is connected with the fixing lifting lug through the third hinge pin. The safety linkage locking device lowers the requirement for the processing and manufacturing precision of parts in the processing, manufacturing, debugging and using processes and is convenient to operate, and the linkage locking performance is stable and reliable.

The invention discloses a large graph sampling visualization method based on graph representation learning, and belongs to the field of graph visualization and graph sampling. According to the method,nodes in an original network are converted into high-dimensional vectors through a node2vec algorithm, then the high-dimensional vectors of the nodes are projected to a low-dimensional space througha dimension reduction algorithm, and the semantic structure similarity of the corresponding nodes in the network space can be effectively expressed through the distance between projection points. Secondly, a multi-target sampling model of adaptive blue noise sampling is designed to effectively maintain a topological structure of an original network; and measurement indexes based on network attribute characteristics are proposed, quantitative evaluation is carried out on different sampling algorithms to obtain graph sampling result evaluation, and the graph sampling result evaluation is presented by utilizing a visualization method. According to the method, the nodes are sampled in the representation space, the context structure of the original network is well simplified and reserved, and the topological structure of the network is effectively kept while the node scale is reduced.

The invention discloses a preparation method of a diamond-like carbon film containing nano-gold particles. The method prepares a tetrahydrofuran precursor solution containing polycarbobenzene-chloroauric acid, and then coats the mixed solution on the surface of single-crystal silicon by spin coating. After the organic solvent is volatilized, chloroauric acid-polyauric acid is formed on the silicon surface Carbon benzene film; the silicon wafer coated with the film is treated at 500-700 DEG C for 1-2 hours under the protection of argon gas, and then naturally cooled to room temperature to obtain a diamond-like carbon film containing gold nanoparticles. The invention is characterized in that the preparation process is simple and the diamond-like composite film containing metal nano-particles is synthesized in one step. The film is expected to be used in mechanical friction, electrochemical electrodes, metal catalysis, optics, and other fields.

The invention belongs to the technical field of rotary transformers, and discloses a split-type rotary transformer with digital output. A decoding circuit is miniaturized and the shape and size of a decoding board are matched and designed according to the structural shape of an output winding of the split-type rotary transformer, and the decoding board is directly integrated on the outgoing side of the output winding of the rotary transformer. The split-type rotary transformer fully maintains original structural characteristics of the rotary transformer through a decoding board integrated modewithout changing the key structural size such as the inner diameter and the outer diameter of the rotary transformer; the decoding board is directly connected with sine and cosine analog output signals of the output winding of the split-type rotary transformer, the analog signals outputted by the split-type rotary transformer are decoded into angle digital signals and the angle digital signals are externally output to users; the decoding board includes an excitation unit, an excitation signal is generated and amplified by power and then used for driving an excitation winding of the split-typerotary transformer, and the condition that an excitation power source is additionally provided to the split-type rotary transformer is not needed.

The invention belongs to the technical field of aerogel preparation, and particularly relates to a normal-pressure drying preparation method of low-density high-strength phenolic resin aerogel with an extremely low shrinkage rate. The invention aims to solve the problems that phenolic resin aerogel prepared by taking thermoplastic phenolic resin as a raw material is obviously shrunk and cracked in a normal-pressure drying process and the drying time is too long. A certain proportion of thermosetting phenolic resin is added into a thermoplastic phenolic resin solution to serve as an aerogel reinforcing agent, hexamethylene tetramine serves as a cross-linking agent, and the low-density and high-strength phenolic resin aerogel which is almost free of shrinkage can be prepared under the normal-pressure drying condition. The method has the advantages that the problems that phenolic resin wet gel is obviously shrunk and cracked in the normal-pressure drying process, and the time is too long are solved. The preparation method is simple in process, green, safe, low in cost and high in efficiency. The prepared phenolic resin aerogel does not generate observable deformation and shrinkage, and can realize near-net forming according to application requirements.

The invention provides a corrosion-resistant heat pump type horizontal sleeve heat exchanger which is of a horizontal structure in the mounting mode. The heat exchanger is composed of a corrosion-resistant block, cover heads, outer sleeve pipe plates, a composite pipe and pipe plates, the cover heads include a cover head I and a cover head II, the corrosion-resistant block is fixedly connected with the cover head I, the pipe plates include a pipe plate I and a pipe plate II, the cover head I is connected with the pipe plate I, the outer sleeve pipe plates include an outer sleeve pipe plate I and an outer sleeve pipe plate II, the pipe plate I is connected with the outer sleeve pipe plate I, the outer sleeve pipe plate II is connected with the pipe plate II which is connected with the cover head II, and the composite pipe internally comprises an outer sleeve and an inner heat exchange pipe which are concentric. The corrosion-resistant heat pump type horizontal sleeve heat exchanger has the advantages that the heat exchange pipe is convenient for inside cleaning, heat exchange efficiency of the outer side of the heat exchange pipe is improved greatly, and the heat exchanger is free oil-storage dead angle.

The invention relates to a heat exchanger, and particularly discloses an all-region heat-pump horizontal shell-and-tube heat exchanger. The heat exchanger comprises an anti-corrosion zinc spelter, endshields, composite tube plates, a fusible plug, a barrel, a plurality of heat exchange tubes, a refrigerant inlet, a refrigerant outlet, a cooling water inlet, a cooling water outlet and a pair of bottom studs, and is characterized in that the composite tube plate I is arranged at the left end outside the barrel, and connected with the endshield I; the composite tube plate II is arranged at the right end outside the barrel, and connected with the endshield II; the fusible plug is arranged above the left end of the barrel; the refrigerant outlet is formed below the left end of the barrel; the refrigerant inlet is formed above the right end of the barrel; the bottom studs are arranged at the lower end of the barrel; the heat exchange tubes are arranged in the barrel; the anti-corrosion zinc spelter is arranged on the endshield I; and the cooling water inlet and the cooling water outlet are formed in the endshield II. The heat exchanger has the benefits that a space of the barrel is fully used; the heat exchange efficiency of the outer sides of the tubes is improved; an oil carrying rate of a refrigerant is adequately ensured; and the heat exchanger has good corrosion resistance.

An inflatable hull fabricated from a drop stitch material is configurable to either a dory or drift boat. The inflatable hull has oarlocks which may be placed within urethane mounts, which are glued or thermally bonded to the fabric making up the gunnels of the boat, thereby eliminating any need for a stiff frame for attachment of oars to the craft. The inflatable hull may have internal structures, such as seats, thigh braces and panels, which are also fabricated from drop stitch material as an integral unit with the hull. Alternatively, the seats, thigh braces and panels may be fabricated as attachable and detachable components which allow a single hull to be utilized either as a dory or a drift boat.

The invention relates to a modified spherical carbon particle material. The modified spherical carbon particle material is prepared from a spherical carbon particle material, a water-soluble polymer containing a conjugated structure and a pH regulator. The invention also relates to a preparation method of the modified spherical carbon particle material. The invention further relates to a graphene-based water-based conductive ink containing the modified spherical carbon particle material, and a preparation method of the graphene-based water-based conductive ink. The modified spherical carbon particle material disclosed by the invention can effectively improve the dispersity and conductivity of graphene in the graphene-based water-based conductive ink, and the solid content of the ink is increased to 13% or above.

The invention discloses a food producing thermal insulation cylinder with a ball grinding function. The cylinder comprises a vertically arranged cylinder body supported by brackets and provided with athermal insulation water interlayer, wherein feed ports and opening covers are arranged on the top of the cylinder body. The cylinder is characterized by further comprising a ball milling stirring mechanism, and the mechanism comprises a supporting beam arranged on the top of the cylinder body, a stirring motor fixed on the supporting beam, a stirring shaft connected with an output shaft of the stirring motor and extending into the cylinder body, a plurality of transverse ball milling stirring rods longitudinally spaced along the stirring shaft, a plurality of steel balls arranged in the cylinder body and a rotating support seat fixed at the inner bottom of the cylinder body. The bottom end of the stirring shaft is sleeved with a bearing or a shaft sleeve to be installed into the rotatingsupport seat. A discharge port is formed in the side surface of the lower part of the cylinder body, a grid plate for preventing the steel balls from falling out fixed on the inner side of the discharge port, and a discharge valve is arranged on the outer side of the discharge port. The cylinder can perform efficient ball milling stirring directly while insulating chocolate paste, so that the chocolate paste can be put into subsequent application in a better state.