24results about How to "Guaranteed efficient selectivity" patented technology

The invention discloses an automatic price inquiry and comparison supply management system based on the price and address of a supplier, particularly relates to the field of price inquiry and comparison supply management, and is used for solving the problems of geographic information lag and insufficient matching between the supplier and a purchasing unit in the existing traditional supply chain management. The method comprises the following steps: analyzing supplier addresses into standardized geographic information, carrying out clustering and region division on suppliers based on geographic distribution, retrieving a region where a purchasing unit is located, associating the region with the position of a related supplier, defining a purchasing mode, generating a multi-dimensional logistics network topological graph, and carrying out real-time optimization and evaluation on a transportation path. The supplier price trend is dynamically predicted based on historical price data and market fluctuation, a prediction model is adjusted in combination with real-time data, and an optimal supplier list is generated according to a preset purchase scene and a multi-dimensional constraint condition, so that accurate and efficient supply chain decision is realized.

An astronavigation material database system belongs to the technical field of astronavigation material databases and comprises a basic platform layer, an application service layer and a presentation layer. The public service layer comprises a public service plate; the application function layer comprises but is not limited to a material management plate, a material data application plate and a material big data analysis plate. The invention discloses an astronavigation material data system, which comprises a word standard specification, establishes an astronavigation material database, can perform big data analysis according to a computer software technology, a network technology and a digital technology, and can realize intelligent recommendation and intelligent knowledge management of astronavigation materials.

The invention relates to the technical field of industrial automation control, and discloses an industrial control configuration software system based on intelligent voice interaction, and the system comprises a voice recognition module which is based on a hybrid architecture of a deep neural network and a hidden Markov model and is used for receiving a voice signal of an operator and converting the voice signal into text data; and the natural language processing module is used for analyzing an operation command in the text data and extracting a device name, an operation instruction and related parameters through a bidirectional long-short-term memory network model. Through combination of augmented reality and virtual reality technologies, visual display and operation feedback of industrial equipment states are realized so as to enhance the perception capability of field operators on the equipment states, remote operators are allowed to perform remote fault diagnosis and operation simulation through VR, more intuitive and efficient operation support is provided, and the operation experience of the field operators is improved. The accuracy and decision-making efficiency of equipment operation are effectively improved, and the risk of misoperation is reduced.

The invention discloses a relay communication method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication, and the relay communication method comprises the steps that a relay terminal receives or monitors a first relay discovery message; the first relay discovery message comprises at least one of the following items: a first hop count and first relay routing queue information, the first hop count is a relay hop count of a terminal which sends or broadcasts the first relay discovery message, and the first relay routing queue information comprises information of a relay terminal before the relay terminal; and executing a relay discovery process according to the first relay discovery message, or determining that the relay discovery process is not executed.

The present invention provides an image restoration method and system based on a multiple attention mechanism, which relates to the field of image processing technology. The method comprises: obtaining an image to be processed; extracting shallow features of the image to be processed through a convolution layer; calculating attention features through a triple attention module according to the shallow features, processing the shallow features through a feature aggregation module, and extracting deep features; fusing the attention features, deep features and shallow features to obtain fused features; restoring the image to be processed according to the fused features, and outputting the restored image. The present invention can perform effective feature fusion and selection between information of different scales and different types, thereby improving the quality and generalization ability of image restoration.

The invention discloses a gallium-indium alloy nano dispersion system, preparation thereof and application of the gallium-indium alloy nano dispersion system in radio frequency sensibilization, and belongs to the cross technical field of chemistry, medicine and other subjects. Raw materials of the gallium-indium alloy nanometer dispersion system comprise gold nanoparticles prepared by a glutathione reduction method and nanometer liquid drops obtained after ultrasonic treatment of liquid metal gallium-indium alloy, and electrochemical replacement occurs in the process that the gold nanoparticles prepared by the glutathione reduction method make contact with the liquid metal nanometer liquid drops. And adsorbing on the surface of the nano liquid drop of the liquid metal gallium-indium alloy after ultrasonic treatment. The gallium-indium alloy nano dispersion system can generate various reactive oxygen free radicals under the action of radio-frequency electromagnetic waves, enables the temperature of an irradiated part to rise quickly, cooperatively kills tumor cells, activates whole-body anti-tumor immune response, and effectively inhibits tumor recurrence and metastasis. The gold nanoparticles not only can significantly improve the stability of the nano-dispersion, but also endow the nano-dispersion with catalase activity, and further enhance the antitumor activity of the nano-dispersion.

A method for predicting electric load of a small sample data set, in which an improved Transformer model is constructed, each sequence data in the constructed data set is introduced into an embedding layer as a single column, the embedding layer maps each sequence data to obtain high-dimensional data, and the high-dimensional data is respectively calculated by a spatial attention mechanism layer and a channel attention mechanism layer. The output of the attention mechanism calculation result is divided into two steps, one of which enters a normalization layer alone and is retained as a cell state, and the other step enters a normalization layer after subtracting the output result of the embedding layer and performs forward propagation, the result after forward propagation is subtracted from the result of the normalization layer input, and enters the normalization layer again, the output of the normalization layer is residually connected with the retained cell state, and the electric load prediction result is output through the output layer.

This invention relates to the field of ore flotation technology, specifically a low-consumption, high-efficiency flotation reagent for high-calcium, fine-muddy fluorite ore, its application, and a flotation method. The flotation reagent includes a modifier, a compound depressant, a compound collector, and a frother. The modifier includes sodium carbonate; the compound depressant includes water glass, carboxymethyl starch, sodium hexametaphosphate, and sodium lignosulfonate; the compound collector includes oleic acid, oxidized paraffin soap, sodium dodecyl sulfonate, and benzoyl hydroxamic acid; and the frother includes pine oil. Through the complementary functions of the compound depressant and the compound collector, highly efficient selective inhibition of high-calcium gangue and highly selective collection of fluorite are achieved, effectively dispersing fine mud, reducing froth entrainment, and ultimately obtaining a fluorite concentrate with a stable grade ≥97.0%, meeting the quality requirements of metallurgical and acid-grade fluorite products. This reduces the negative impact of fine nuclei on flotation, stabilizes the fluorite recovery rate, and increases the fluorite recovery rate by 3-6%, achieving dual stability in grade and recovery rate.

The invention belongs to the field of animal models, and particularly discloses a method for constructing an autism spectrum disorder mouse model through a BAF155 conditional knockout mode. According to the application disclosed by the invention, the influence of BAF155 knockout on OL development and myelin sheath formation is observed by constructing a specific BAF155 knockout mouse. A behavioral experiment further proves that deletion of BAF155 in oligodendrocyte precursor cells can cause a mouse to have a core and characteristic ASD-like behavior phenotype taking social preference disorder and repeated engraving behaviors as main behaviors. Therefore, a new gene molecule defect ASD animal model is successfully constructed, and the method has the advantages that the target is clear, ASD can be researched by inducing single gene molecule defects, an appropriate and matched animal model is provided for ASD caused by clinical BAF155 mutation, and accurate diagnosis and formulation of subsequent intervention strategies are facilitated.

The invention relates to the field of electro-catalytic materials, and mainly discloses a metal-metal catalyst for preparing nitrite through electro-catalytic ammoxidation and a preparation method and application of the metal-metal catalyst, and the catalyst is composed of molybdenum (Mo), nickel (Ni) and copper (Cu) in a metallic state and does not contain an oxide or hydroxide phase. The metal-metal catalyst provided by the invention shows excellent comprehensive performance in electrocatalytic ammoxidation reaction, the catalyst shows extremely low reaction starting potential in the aspect of catalytic activity, and the starting potential is only 1.36 V relative to a reversible hydrogen electrode in electrolyte, so that the energy input required by the reaction is remarkably reduced, and the energy consumption is reduced. Ammonia oxidation can be tested under milder conditions, the safety and reliability of ammonia oxidation are directly improved, efficient ammonia utilization rate and nitrite selectivity are realized, side reaction is effectively inhibited, and the catalyst is particularly remarkable in long-term operation stability.

The invention belongs to the technical field of preparation of chemical intermediates, and particularly relates to a catalyst composition and application thereof in preparation of 2-methyl-4-acetoxy-2-butenal. The homogeneous catalyst composition provided by the invention comprises the following raw materials: a noble metal homogeneous catalyst and an organic phosphine ligand. According to the catalyst composition, 2-methylene-4-acetoxybutyraldehyde can be isomerized to generate 2-methyl-4-acetoxy-2-butenal (FCA) under the condition that H2 is not used, on one hand, H2 is not used, so that a hydrogenation product of a hydroisomerization byproduct is effectively avoided; on the other hand, the homogeneous catalyst composition enables isomerization to have more efficient all-trans isomerization selectivity, all-trans 2-methyl-4-acetoxy-2-butenal with the purity larger than 99.9% can be generated, the all-trans selectivity of downstream VA is improved greatly, and meanwhile the industrial cost is greatly reduced due to the fact that the selectivity is increased.

The application belongs to the field of detection, and specifically discloses a fluorescent probe, a preparation method and application thereof; the fluorescent probe comprises a compound shown in formula (I). 2+ The fluorescent probe has high sensitivity and selectivity, is not interfered by other metal ions, has a short detection time, can be detected within 30 min, can be detected completely within 30 s at most, can realize visual detection when applied to a test strip, and can be applied to the detection of Hg 2+ in environmental samples, such as actual water samples and soil samples.

The invention discloses a La-CPAN-PEI defluorination material as well as a preparation method and application thereof, and belongs to the technical field of water treatment. The preparation method of the material comprises the following steps: performing heat treatment on polyacrylonitrile fibers in protective gas to obtain cyclized polyacrylonitrile fibers; and dispersing the cyclized polyacrylonitrile fiber, an alkali catalyst, an organic lanthanum source and polyethyleneimine in a degassed alcoholic solution, and carrying out solvothermal reaction to obtain the La-CPAN-PEI defluorination material. According to the method, the pH response characteristic of the PEI chain is utilized, the fluorine ion adsorption process is precisely regulated and controlled, and the process shows the characteristics of acid adsorption and alkali removal and dynamic balance of an intermediate pH region. The material has high adsorption capacity, excellent selectivity and simple and convenient acid-base cyclic regeneration capacity through the synergistic effect of three mechanisms of electrostatic attraction, conformation mass transfer and precipitation immobilization, and has a good application prospect in deep treatment of fluorine-containing wastewater.

The present invention discloses a crystalline g-C3N4 material co-modified by doping and defects, and a preparation method and application thereof. The preparation method of the material comprises the following steps: subjecting a urea raw material to a heat treatment I to obtain a urea precursor; mixing the urea precursor with a eutectic salt containing lithium chloride and sodium chloride and subjecting the mixture to a heat treatment II under a protective atmosphere to obtain the urea precursor. The crystalline g-C3N4 material co-modified by doping and defects obtained by the present invention has good optical properties, excellent carrier separation and migration capabilities, higher O2 adsorption capacity, and efficient 2e ‑ ORR selectivity and long-term stability can be used as a photocatalyst for the efficient production of hydrogen peroxide, and has potential application value in seawater. Its preparation method is simple, low cost, and suitable for industrial production.

The invention relates to the technical field of biomass energy chemical industry, in particular to a method for preparing alkylphenol through alkylation of phenol and isopropanol. The method comprises the following steps: step 1, carrying out calcination pretreatment on an H-Beta molecular sieve to obtain a pretreated molecular sieve; step 2, filling the pretreated molecular sieve into a fixed bed reactor, exhausting air, and preheating to 200-350 DEG C; step 3, dissolving phenol in isopropanol to obtain a mixed raw material; and step 4, pumping the mixed raw material into a fixed bed reactor to be in contact with the pretreated molecular sieve, and performing alkylation reaction under the conditions that the temperature is 200-350 DEG C, the hydrogen pressure is 0.1-1.5 MPa and the mass space velocity is 2-5h <-1 > to obtain the alkylphenol. The method can be used for efficiently preparing liquid fuel precursors (isopropyl substituted phenol) such as aromatic hydrocarbon, cycloalkane and alkyl cyclohexanol, and has a remarkable industrial application value.

The invention belongs to the field of solid waste catalysis, and particularly relates to a method for efficiently catalyzing and recovering a gasoline product by using oxygen-mediated waste polyolefin plastics. The method comprises the following steps: mixing a metal-acid catalyst with waste polyolefin plastic, reacting in mixed gas containing oxygen under normal pressure, and separating reaction liquid to obtain a gasoline product, the metal-acid catalyst comprises a pretreated metal catalyst and a pretreated solid acid catalyst. According to the method, the optimal reaction conditions for preparing the aromatic chemicals by degrading the polyolefin are optimized under the condition of different oxygen concentrations by adopting the metal-acid catalyst, so that higher catalytic activity and selectivity of liquid gasoline products are obtained. In addition, the invention provides a novel air-assisted polyolefin catalytic recovery system for the first time, the limitation of harsh reaction conditions of traditional polyolefin catalytic recovery is solved, and large-scale application is expected to be realized.

The invention discloses a novel power system power distribution network voltage regulation resource comprehensive configuration method and system, and the method comprises the steps: carrying out the judgment of the node attribute and the out-of-limit amplitude of each voltage out-of-limit node in a power distribution network in a day time period and a night time period; dividing the capacity of reactive power voltage regulation equipment capable of being added to each type of nodes in the power distribution network according to a reactive power voltage regulation equipment configuration criterion by combining the out-of-limit amplitude of the voltage out-of-limit node and the node attribute; based on the capacity configuration scheme of the reactive voltage regulation equipment, node attributes and out-of-limit amplitudes of all voltage out-of-limit nodes in the power distribution network are judged again; and based on the recalculated node attribute and the out-of-limit amplitude of each voltage out-of-limit node, according to an energy storage equipment configuration criterion, obtaining a configuration scheme of energy storage equipment resources. According to the method, the problem that a comprehensive and quantifiable voltage regulation resource configuration method is lacked in the voltage regulation resource configuration of the power distribution network in a novel power system is solved.

The invention belongs to the technical field of ironmaking, and provides a method for calculating the comprehensive cost performance of iron ore powder. The method comprises the following steps: firstly, calculating a dry basis non-tax price of iron ore powder to a plant, and then setting a target function and constraint conditions based on an ore matching target of the iron and steel plant; next, selecting a recently common ore blending scheme as basic ore powder, calculating the ore blending scheme by using the target ore powder and the basic ore powder, and calculating a target function value; under the condition that the ratio of the target mineral powder is 0, the lowest ratio of other mineral powder is taken as the lower limit of the ore blending ratio of the mineral powder. And finally, calculating a cost performance index, and sorting the mineral powder according to the size of the index. According to the method, the cost performance of the iron ore powder can be evaluated more comprehensively, the accuracy of purchase decision making is improved, the molten iron cost is reduced, and the market competitiveness of enterprises is improved.

The invention discloses a selective lithium extraction and green regeneration method for a waste lithium titanate battery. The method comprises the following steps: firstly, pretreating the waste lithium titanate battery to obtain black powder containing lithium titanate; then selectively leaching lithium by adopting a quaternary ammonium salt / gluconic acid / ethylene glycol-based eutectic solvent to obtain a lithium-rich leaching solution and leaching slag containing a titanium compound; the leachate is circularly used for leaching lithium in the black powder until the lithium is saturated, a saturated sodium carbonate solution is added for reaction, washing and drying are performed after solid-liquid separation, and battery-grade lithium carbonate is obtained; the leaching residues are subjected to impurity removal, washing and drying, and a titanium compound is obtained; and finally, preparing the lithium titanate negative electrode material by taking the lithium titanate and battery-grade lithium carbonate as a precursor. According to the method, a traditional strong acid leaching process is replaced with the environment-friendly green solvent, the method has the remarkable advantages that the process is simple, the solvent can be recycled, and secondary pollution is avoided, efficient selective extraction of lithium in the waste lithium titanate battery and green short-process regeneration of the lithium titanate negative electrode material are achieved, and the method has excellent industrial application prospects.

The invention discloses a method for efficiently recovering germanium and simultaneously removing harmful impurity arsenic through ultrasonic-enhanced chlorination distillation of a high-grade germanium-containing material, and belongs to the technical field of hydrometallurgy and comprehensive utilization of resources. The method comprises the following steps: mixing a high-grade germanium-containing material, a hydrochloric acid solution and sodium hypochlorite, and sequentially leaching and distilling; the leaching is carried out under an ultrasonic condition. The method for efficiently recovering germanium and simultaneously removing harmful impurity arsenic through ultrasonic-enhanced chlorination distillation of the high-grade germanium-containing material is short in process time, simple to operate and free of danger. The method for chlorination distillation of germanium in the high-grade germanium-containing material has the advantages of high germanium distillation rate, selective and efficient removal of impurity arsenic, short chlorination distillation time and the like, overcomes the defects of long chlorination distillation time, indissolvable germanium compound indissolvable in hydrochloric acid and difficult removal of impurity arsenic in other processes, and has obvious economic benefits.

This disclosure provides a path acquisition method, apparatus, electronic device, storage medium, and computer program. The method includes: acquiring link device information of each autonomous system (AS) of a first target path; the link device information is used to characterize the cross-domain occupancy of the AS; determining a first link set based on the link device information of each AS; the first link set includes suspected conflicting links of the first target path in each AS; suspected conflicting links are links that may be occupied; acquiring at least one candidate replacement link corresponding to a suspected conflicting link based on the first link set; the AS is located in the same AS as the corresponding candidate replacement link; replacing the suspected conflicting link in the first target path with the candidate replacement link to obtain a second target path. This disclosure avoids the probability of occupancy conflicts, improves path stability, and is no longer extremely sensitive to delayed updates.

The invention discloses 2, 3, 3, 3-tetrafluoropropene and a preparation method thereof.The preparation method comprises the steps that hexafluoropropylene reacts with a metal hydride complex in the nitrogen atmosphere, and a product mixture containing 2, 3, 3, 3-tetrafluoropropene is obtained; wherein the molar ratio of the hexafluoropropylene to the metal hydride complex is (1: 3)-(3: 1); according to the preparation method, hexafluoropropylene is taken as a raw material and is directly subjected to a hydrogen-fluorine element selective exchange reaction with a metal hydride complex, the preparation of 2, 3, 3, 3-tetrafluoropropene is efficiently realized by a one-step method, and the preparation method is simple and easy to implement and is beneficial to industrial application; the adopted metal hydride complex has an efficient selective hydrogen-fluorine exchange characteristic, and has the characteristic of high selectivity when being used for preparing 2, 3, 3, 3-tetrafluoropropene through hydrofluorination of hexafluoropropylene.

The invention relates to the field of artificial intelligence, and discloses an intelligent evaluation method for logical thinking training and a related device, which are used for carrying out intelligent evaluation on a target test user and improving the accuracy of evaluation decision. The method comprises the following steps: performing motion state tracking and motion state feature extraction on a target evaluation user through a state space tracking model to obtain a plurality of motion state features; performing question-answer state feature extraction to obtain a plurality of question-answer state features; performing decision analysis through the plurality of initial intelligent evaluation decision models to obtain prediction data and initial model parameters; performing parameter optimization analysis through a particle swarm algorithm to obtain target model parameters; performing parameter execution strategy analysis and parameter updating to obtain a plurality of target intelligent evaluation decision models; and performing model weight analysis to obtain model weight data of each target intelligent evaluation decision model, and performing model integration through the model weight data to obtain an intelligent evaluation decision model set.

The invention belongs to the technical field of organic photoelectric materials, and particularly discloses a multifunctional organic semiconductor material with cyano phosphonic acid as an anchoring group and a preparation method and application of the multifunctional organic semiconductor material. The cyano group in the anchoring group can effectively increase the deprotonation capability of phosphonic acid and enhance the hydrophilicity of the anchoring group, so that the material has unique amphiphilic characteristics and shows good wettability, and further, the high-quality perovskite thin film is obtained. Meanwhile, F atoms in the arylamine enhance the interface interaction between the hole transport layer and the perovskite layer, thereby further regulating the crystallization of the perovskite, passivating the bottom interface defect of the perovskite, and inhibiting the non-radiative recombination of the interface. The organic semiconductor material is highly conjugated in molecules and good in photo-thermal stability. When the hole transport layer is applied to a trans-perovskite solar cell, the photoelectric conversion efficiency of more than 24.5% can be obtained, and the hole transport layer shows a good industrial application prospect.