37results about How to "Efficiently obtained" patented technology

The purpose of the present invention is to provide: a SiC single-crystal ingot from which a large number of SiC substrates can be efficiently obtained; a method for producing a SiC single-crystal ingot; and a method for producing a SiC substrate. The SiC single crystal block according to the present embodiment includes, in a cut plane orthogonal to the crystal growth direction, a portion in which the length of a line segment that passes through the center of the largest inscribed circle enclosed by the cut plane and connects a first outer peripheral point and a second outer peripheral point of the cut plane is 211-221 mm.

The invention relates to the technical field of biological medicine, in particular to a biomarker for diagnosing and distinguishing rheumatoid arthritis and knee osteoarthritis and application of the biomarker. In order to solve the problems of insufficient sensitivity and specificity of rheumatoid arthritis (RA) and knee osteoarthritis (KOA) in clinical detection, the invention discloses a novel biomarker, namely a soluble interleukin 17 receptor D, namely sIL-17RD. The inventor finds that the sIL-17RD level is remarkably increased in serum of a patient with rheumatoid arthritis, the sIL-17RD level is not remarkably changed in serum of a patient with knee osteoarthritis, and the sIL-17RD level is remarkably increased in synovial fluid of the patient with knee osteoarthritis. Therefore, by measuring the sIL-17RD level in the serum sample of the rheumatoid arthritis patient and the sIL-17RD level in the synovial fluid and serum of the knee osteoarthritis patient, the rheumatoid arthritis and the knee osteoarthritis are diagnosed and distinguished, and a new strategy is provided for clinical diagnosis and distinguishing of the rheumatoid arthritis and the knee osteoarthritis.

The invention discloses a method for rapidly and efficiently preparing a series of novel ester group facaplysin derivatives by combining EDCI and HOBT to react with carboxyl facaplysin and directly carrying out ester exchange reaction on an active ester intermediate and alcohol without separation. The invention also discloses application of the derivatives in resisting methicillin-resistant staphylococcus aureus and escherichia coli. The preparation method comprises the following steps that EDCI and HOBT are combined to activate carboxyl facaplysin for reaction, an activated ester intermediate is generated, the activated ester intermediate and alcohol are directly subjected to esterification reaction without separation, and a series of ester-based facaplysin derivatives are obtained. According to the preparation method, ester-based Fascaplysin derivatives with different structures can be rapidly and efficiently constructed, and compared with a traditional method that ester-based carboline derivatives are firstly synthesized and then high-temperature intramolecular cyclization is performed, the time and the raw material cost are greatly saved, the synthesis efficiency is improved, the reaction process is observable and controllable, and the yield is stable. And the synthesized ester group facaplysin derivative has excellent antibacterial activity on methicillin-resistant staphylococcus aureus and escherichia coli.

The object of the present invention is to provide a stable isotope enrichment device and a stable isotope enrichment method capable of reducing the discharge amount of toxic or combustible substances or substances causing environmental load in the atmosphere and reducing the amount of raw materials used. The present invention provides a stable isotope enrichment device, including: a distillation column group in which a plurality of distillation columns are connected in a cascade; a raw material supply line (30) that supplies a raw material into a first distillation column (1); a product line (31) that withdraws a product from another distillation column located on the secondary side of the first distillation column (1); an isotope-depleted fluid withdraw line (32) that withdraws an isotope-depleted gas or an isotope-depleted liquid from the first distillation column (1) or another distillation column located on the primary side of the one distillation column (1); an isotope exchange reactor (22) at which the isotope-depleted gas or the isotope-depleted liquid is subjected to an isotope exchange reaction, the isotope-depleted gas or the isotope-depleted liquid is regenerated such that the concentration of molecules containing a target stable isotope in the isotope-depleted gas or the isotope-depleted liquid approaches the natural abundance ratio, and an isotope-regenerated gas or an isotope-regenerated liquid is produced; and an isotope-regenerated fluid return line (33) that re-supplies the isotope-regenerated gas or the isotope-regenerated liquid into the first distillation column (1).

The invention discloses a method for preparing high-purity 2-methyl-6-acylnaphthalene and 2-methyl-7-acylnaphthalene through continuous catalytic reaction and rectification purification and application of the high-purity 2-methyl-6-acylnaphthalene and the 2-methyl-7-acylnaphthalene. According to the method, high-purity 2, 6-and 2, 7-acyl naphthalene products can be obtained through fixed bed catalytic synthesis, rectification and crystallization purification, firstly, the molecular sieve catalyst is modified, the catalytic conversion rate and selectivity can be further improved, the formed catalyst is suitable for fixed bed acylation synthesis reaction, the catalyst activity in a catalytic system is high, and the catalytic efficiency is high. The used catalyst can be reused after regeneration treatment. The fixed bed catalytic reaction system, the product and the catalyst can realize solid-liquid separation without hydrolysis quenching, a large amount of acidic wastewater is not generated, the fixed bed catalytic reaction system is environment-friendly, in addition, unreacted 2-methylnaphthalene in a rectification system is recycled, a target object can be purified through rectification and crystallization, a high-purity product is obtained, and the fixed bed catalytic reaction system has a good application prospect.

A method for producing ovarian somatic cell-like cells includes a step 1 of culturing primate pluripotent stem cells in a medium including a GSK3 inhibitor and a ROCK inhibitor; a step 2 of culturing the cells from the step 1 in a medium including BMP4, retinoic acid, and an MEK inhibitor; and a step 3 of culturing the cells from the step 2 in a base medium to obtain ovarian somatic cell-like cells. A method for inducing the differentiation of primate pluripotent stem cells into ovarian somatic cell-like cells includes inducing the differentiation of primate pluripotent stem cells into ovarian somatic cell-like cells using the method for producing ovarian somatic cell-like cells.

The resin composition for phenolic foams of the present invention includes (A) a resol-type phenolic resin, (B) an acid curing agent, (C) a blowing agent, (D) urea, and (E) an aliphatic epoxy compound. The resin composition for phenolic foams may further include (F) a solid phosphorus-based flame retardant, (G) a plasticizer, or the like. The aliphatic epoxy compound is preferably a compound having a glycidyl ether group at least one molecular terminal.

The application belongs to the field of sludge recovery, and particularly relates to a method for recovering calcium fluoride from calcium fluoride sludge, wherein the calcium fluoride sludge is pretreated under ultrasonic waves, the power of the ultrasonic waves is above 20 KHz; a flotation reagent is added to the system after ultrasonic treatment for rough selection, and calcium fluoride rough selection material is collected; the flotation reagent comprises an inhibitor and a collector, the collector comprises formula 1 and formula 2 in a weight ratio of 1:1-2, the pH of the slurry in the flotation stage is 3-5.5; the acid for regulating the pH of the slurry is at least one of hydrochloric acid and nitric acid. The application innovatively adopts an ultrasonic process to pretreat the calcium fluoride sludge, and then cooperates with combined collectors in subsequent flotation and joint control of the pH of the flotation process, so that synergy can be achieved, and high-grade calcium fluoride can be efficiently and greenly obtained based on simple processes and means.

This invention relates to the field of intelligent rail transit technology, providing a track detection method, apparatus, electronic device, and storage medium. The track detection method includes: obtaining target image data representing a track region from image data acquired by a camera; obtaining target point cloud data representing the track region from point cloud data acquired by a lidar based on the camera parameter matrix and the target image data; extracting a transformation matrix from the lidar coordinate system to the track plane coordinate system based on the target point cloud data; obtaining target track data generated by projecting the target image data onto the track plane based on the camera parameter matrix and the transformation matrix; and fitting a target track equation based on the target track data. This invention's track detection scheme combines the sensing capabilities of lidar with the motion-distortion-free and pixel-dense characteristics of camera imaging, improving track detection accuracy, increasing track detection distance, and efficiently and accurately obtaining track detection results.

This invention relates to the field of sliding bearing simulation and optimization technology, and more specifically to a high-precision simulation and optimization design method for hydrostatic thrust sliding bearings. It establishes an efficient decoupling model of the fluid-solid-thermal three-physics field of the hydrostatic thrust sliding bearing, decomposing the overall thermodynamic field into two subfields, which are coupled with the fluid force field and the solid force field, respectively. Then, it constructs a gap oil film flow / thermal field model and a friction pair deformation solid / thermal field model, achieving equivalent coupling through data transfer. The oil film control equations are iteratively solved to obtain oil film pressure, temperature, and flow velocity; the friction pair equations, including elastic constitutive and thermal strain equations, are solved to obtain their elastic and thermal deformations, with bidirectional data transfer achieving coupled iteration. Based on the above method, simulations are performed, establishing sub-models of oil film flow and friction pair deformation, using local interpolation and dynamic meshing to process the interface; the oil cavity is optimized based on the simulation results, parametric analysis is used to establish the mapping between structural parameters and lubrication performance, the objective function and constraints are defined, and the optimal oil cavity structure is obtained through algorithms.

The present invention relates to a method for manufacturing a solid electrolyte layer and a method for manufacturing a secondary battery. The method for manufacturing a solid electrolyte layer includes a step of preparing a solid electrolyte slurry by mixing a solid electrolyte, a conductive additive, a binder, and a solvent; a step of obtaining a parameter of the solid electrolyte slurry using a dynamic viscoelasticity measuring device; a step of determining a quality of a coating film based on the parameter; and a step of applying the solid electrolyte slurry that has been determined to be acceptable in the step of determining a quality of a coating film.

The present invention discloses a method and device for mining recommendation information, and relates to the field of computer technology. A specific implementation of the method includes: extracting attribute elements of a set attribute type from text description information of a target object to obtain scene attribute information of the target object; combining the attribute elements of the scene attribute information according to a set combination strategy to generate scene combination information including event attribute elements; generating recommendation information of the target object according to the attribute elements of the scene combination information and a set recommendation template. This implementation combines the attributes of the target object itself with the user's intention, which can not only highlight the target object, but also meet the user's needs, improve the recommendation effect, and enhance the user experience.

Provided is a method for efficiently obtaining a solution containing nickel and / or cobalt from alloys containing nickel and / or cobalt and copper, such as waste lithium-ion batteries. The present invention pertains to an alloy treatment method for obtaining a solution containing nickel and / or cobalt from alloys containing nickel and / or cobalt and copper, the method comprising: a leaching step S1 in which an acid solution is added to the alloys in the presence of a sulfurizing agent to perform a leaching treatment and obtain a leachate and a leaching residue; and a cementation step S2 in which a reducing agent and a sulfurizing agent are added to the resulting leachate to perform a copper-removal treatment for sulfurizing at least copper contained in the leachate and obtain a post-copper removal solution and a copper-removed residue, wherein the copper-removed residue obtained through the copper-removal treatment in the cementation step S2 is repeatedly subjected to the leaching step S1 and subjected to a leaching treatment together with the alloys.

Provided are a novel dispersant for suspension polymerization, and the like. The dispersion stabilizer includes a polyvinyl alcohol-based polymer (A) having an acetal skeleton (a) having a polymerizable unsaturated bond and an ionic skeleton (b).

The invention relates to the technical field of biochemical detection, in particular to a sample pretreatment method, a method for detecting the ratio of 5-methylcytosine to cytosine and a kit. The sample pretreatment method comprises the following steps: providing a sample containing substances to be detected, wherein the substances to be detected comprise 5-methylcytosine and cytosine; the method comprises the following steps: mixing magnetic beads containing sulfonic acid groups with a sample, carrying out adsorption treatment, and then carrying out leaching treatment by using an alcoholic solution to obtain a to-be-detected substance-magnetic bead compound; eluting the to-be-detected substance-magnetic bead compound by using the eluent to obtain a to-be-detected sample; the eluent comprises at least one of a formic acid-alcohol solution and an ammonia water-alcohol solution. The sample pretreatment method is simple in process and low in cost, the to-be-detected sample containing the 5-methylcytosine and the cytosine can be efficiently obtained, the ratio of the 5-methylcytosine to the cytosine can be accurately quantified in a high-sensitivity mode on the basis of the electrospray high-efficiency ion mobility spectrometry technology subsequently, and the method has good application prospects.

The invention relates to a production method for an oxide capable of efficiently producing an oxide of an organic compound in the presence of raw materials for a Pt / Bi composite catalyst, and to a production method for a Pt / Bi composite catalyst capable of producing a catalyst that exhibits a high activity for dehydrogenation oxidation reaction of an organic compound even in the presence of an organic compound to be a raw material for an oxide. The oxide production method includes subjecting an organic compound having one primary hydroxy group to a dehydrogenative oxidation reaction in the presence of Pt supported by a carrier, a Bi ion source and water, under the condition such that the minimum value of the pH during the reaction is less than 7, thereby obtaining an oxide of the organic compound.

An image processing method and device, a computer readable storage medium and a terminal, the method comprising: acquiring F frames of first images, F being an integer greater than 1; inputting the F frames of first images into a neural network model trained in advance to obtain fusion parameters output by the neural network model, the fusion parameters comprising enhancement parameters and weight parameters, wherein the enhancement parameters comprise a mapping vector corresponding to each pixel point of each frame of first image, and the weight parameters comprise a weight value corresponding to each pixel point of each frame of first image; performing enhancement processing on the F frames of first images according to at least the enhancement parameters to obtain F frames of second images; and performing fusion processing on the F frames of second images according to the weight parameters to obtain a target image. Through the scheme provided in the present application, multiple frames of images can be fused efficiently to obtain a high-quality image.

As a hydrocarbon production system that synthesizes hydrocarbons using water and carbon dioxide as raw materials, a hydrocarbon production system (100) capable of producing hydrocarbons by securing hydrogen and carbon monoxide required for hydrocarbon synthesis is provided. In a hydrocarbon production system (100) that produces hydrocarbons from at least water and carbon dioxide, the hydrocarbon production system includes at least an electrolytic reaction unit (10), a reverse water-gas shift reaction unit (20), and a hydrocarbon synthesis reaction unit (30).

The embodiment of the invention provides a task processing method, an automatic question answering method and a task processing system.The task processing method comprises the steps that a task processing request is received, and the task processing request carries to-be-processed data; target model parameters corresponding to a target requester are screened out from the multiple candidate model parameters, the candidate model parameters are obtained by training a pre-training processing model based on a sample set specified by the requester, and the requester corresponding to each candidate model parameter is different; according to the target model parameter and a shared model parameter, a task processing model is constructed, the shared model parameter is a model parameter shared by each requester in a pre-training processing model, and the shared model parameter of the pre-training processing model is fixed in the training process; and inputting the to-be-processed data into the task processing model to obtain a task processing result. The task processing model does not need to be provided for each requester independently, so that the model deployment cost and the task processing resource consumption are reduced.

The present invention provides a method for efficiently obtaining a high-quality product. The present invention relates to a method for producing an easily polymerizable compound, the method using a purification apparatus including a wash column and at least one of a crystallization tank or a ripening tank, the crystallization tank forming easily polymerizable compound crystals from an easily polymerizable compound-containing solution or a mother liquor in an easily polymerizable compound crystal-containing slurry, the ripening tank growing the easily polymerizable compound crystals, the purification apparatus further including a line that includes a bend having a ratio R / D of radius R of curvature to line inner diameter D of more than 4 and not more than 10 and that is connected to at least one selected from the group consisting of the crystallization tank, the ripening tank, and the wash column, the method including sending the easily polymerizable compound crystal-containing slurry through the line.

The application discloses a heterogeneous oxidation reaction system, comprising the following units: an oxidation gas preparation unit, an oxidation reaction unit, a regeneration unit and a tail gas treatment unit. The application further discloses an application method of the high-concentration ozone water preparation system.

A belt processing device (10) moves a processing belt (34) relative to a workpiece (W) to process the workpiece. The belt processing device comprises a first roller (40) that is a processing roller, a second roller (32) that is a driven roller, a processing belt that is supported by the first roller and the second roller, a pneumatic motor (60) that rotates the first roller or the second roller, an elastic ring (44) that is installed on the outer circumference of the first roller, and an expansion prevention member (46) that is installed on the elastic ring and has a greater modulus of elasticity than the elastic ring.

The application discloses a kind of based on the complex product module division method of multiple component correlation analysis.The steps of the present application are as follows: first, the final comprehensive correlation strength matrix of component is established from the perspective of product life cycle;Then, through the core component screening method based on the point weight ordering of undirected weighted network, multiple core components are screened out;Then, through the stable overlapping community discovery algorithm based on the shapley value determination in community, the complex product module division is realized, and multiple module division preliminary schemes are generated;If there are overlapping components between each module in the scheme, then assign these overlapping components to the most suitable module through genetic algorithm, and determine the final module division scheme by comparing the modularization measurement value Q of each module division candidate scheme.The present application is suitable for the module division of complex product with a large number of components, and can quickly generate the final scheme of complex product module division.

This invention is intended to efficiently extract and purify a target foreign protein expressed with the use of an E. coli strain from the periplasm. This invention provides a method for producing a protein comprising the steps (a) to (c) below: (a) a step of introducing a gene encoding a target foreign protein into E. coli having modification in a gene associated with maintenance of the outer membrane structure; (b) a step of culturing the E. coli of (a); and (c) a step of recovering a target foreign protein from the periplasmic fraction of the microbial cell after culture.

A spray device (10) includes: a useful substance having an antioxidative effect or an anti-inflammatory effect; a sprayer (20) configured to spray the useful substance into a space (S) where a target person (T) is present; and a controller (30) configured to control the sprayer (20). The useful substance sprayed by the sprayer (20) has a particle diameter from 1 µm to 10 µm inclusive.

The invention relates to a medical ray protection preparation for relieving radiodermatitis, and belongs to the technical field of biomedical skin treatment. The preparation is composed of a preparation A and a preparation B. The preparation A is composed of the following components in percentage by weight: 0.01-0.03% of superoxide dismutase, 0.005-0.05% of trehalose and the balance of ultrapure water. The preparation B is prepared from the following components in percentage by weight: 0.01 to 0.04 percent of chlorogenic acid, 2.5 percent of potassium sorbate, 15 percent of sorbitol, 1 percent of hyaluronic acid, 2.5 percent of carboxymethyl chitosan and the balance of purified water. The superoxide dismutase, the trehalose, the chlorogenic acid and other active ingredients are utilized to relieve radiodermatitis from multiple aspects of removing active oxygen at a wound part, resisting inflammation, inhibiting bacteria and promoting skin barrier repair, and by utilizing the moisturizing and antibacterial effects of carboxymethyl chitosan and the functions of promoting collagen production and tissue repair of hyaluronic acid, the wound healing effect is improved, and the wound healing effect is improved. The radiodermatitis is comprehensively treated.

The invention belongs to but not limited to the technical field of genetic engineering, and discloses an Anguilla japonica Activin A recombinant protein, and an expression method and application thereof. The anguilla japonica Activin A recombinant protein comprises an anguilla japonica Activin A mature peptide amino acid sequence, a 6 * histidine tag at the N end and SUMO dissolution promoting polypeptide; the amino acid sequence of the anguilla japonica Activin A recombinant protein is SEQ ID NO: 1, and the nucleotide sequence of the coding gene of the anguilla japonica Activin A recombinant protein is SEQ ID NO: 3. The prokaryotic expression vector pET-His-SUMO-Activin A of the Japanese eel Activin A is constructed for the first time, the Activin A recombinant protein of which the amino acid sequence is consistent with the mature peptide of the Japanese eel Activin A can be obtained, and the Activin A recombinant protein can be applied to ovarian development regulation and artificial propagation research of the Japanese eel.

There is provided a manufacturing method for a type II unmodified cellulose fine fiber to obtain a cellulose fine fiber via mercerization of a cellulose, wherein a chemically unmodified cellulose fine fiber can be efficiently obtained by simple steps. A manufacturing method for a type II unmodified cellulose fine fiber is characterized as comprising: a mercerization step of mercerizing a cellulose to obtain a mercerized cellulose; a depolymerization step of reducing a degree of polymerization of the mercerized cellulose to 760 or less to obtain a raw cellulose; a defibration step of defibrating the raw cellulose by adding an alkali metal hydroxide so as to achieve a total concentration of 2.5 to 17.5% to obtain a cellulose fine fiber; and a neutralization step of neutralizing the cellulose fine fiber with an acid.

The application discloses a method for constructing an ultra-high performance concrete knowledge graph and machine explanation based on graph retrieval enhanced generation, and belongs to the technical field of ultra-high performance concrete knowledge graph construction and mechanism cognition, and comprises the following steps: obtaining a plurality of literatures related to ultra-high performance concrete; constructing an ultra-high performance concrete knowledge graph based on the plurality of literatures related to ultra-high performance concrete; performing retrieval of an adaptive length path on a target start and end node based on the ultra-high performance concrete knowledge graph, and obtaining at least one first candidate evidence chain corresponding to the target start and end node; inputting a target instruction and each first candidate evidence chain into a generation model to obtain corresponding machine explanation text. The method can efficiently obtain machine explanation of ultra-high performance concrete knowledge with high credibility.

The invention relates to the technical field of formed caps, in particular to a fully-formed cap construction method based on BiSeNet face segmentation, and the method comprises the steps: constructing a face segmentation data set; segmenting the contours of the face, the head and the neck by using the face segmentation model to obtain contour pixel coordinates; calculating the distance between the feature points to obtain hat making parameters; inputting the feature points and the distances between the feature points into model making software to obtain a hat platemaking; according to the invention, the BiSeNet is used for extracting the coordinates of each point on the face contour, and the Euclidean distance, the Harmann distance and the arc length algorithm are respectively used for calculating the length between the feature points, so that a complete and accurate hat model is constructed.