23results about How to "Overcoming pollution" patented technology

The preparation method comprises the following steps: firstly, analyzing the amino acid sequence of an alpha 1 chain of the human XVII type collagen, and selecting partial amino acid fragments which are not easily degraded by endogenous or exogenous protease in non-transmembrane regions of different functional domains of the protein; the recombinant collagen gene fragment (Col17a) n is obtained by repeatedly splicing the recombinant collagen gene fragment (Col17a) n; then introducing homologous promoters from different methylotrophic yeasts to the 5'end of a recombinant collagen gene segment, optimally synthesizing selected (Col17a) n and promoter segments, obtaining a connecting segment by utilizing PCR cloning, connecting the collagen segment (Col17a) n, the promoter segments and a pPIC9K carrier skeleton segment by virtue of a Gibson Assessment seamless connection technology, and obtaining the recombinant collagen gene. And constructing to obtain the pichia pastoris expression plasmid pPIC9K-(Col17a) n of the recombinant human source XVII type collagen.

The invention belongs to the technical field of fiber modification, and particularly relates to a preparation method of degradable biomass high-water-absorption short fibers. According to the invention, cellulose short fibers such as plant fibers, regenerated cellulose fibers and the like are used as raw materials, and the degradable biomass short fibers with high water absorption performance are prepared through the technological processes of pre-humidification, cake making, hanging into a reaction tank, alkalization, etherification, neutralization, washing, oiling, wet feeding, wet splitting, drying, metering, packaging and the like. The water absorption rate of the obtained degradable biomass high-water-absorption short fiber is 60 to 100g / g, and the fineness of the degradable biomass high-water-absorption short fiber is 1.29 to 10.0 dtex. The fiber can meet the use requirements in the fields of hygienic personal care products, blood-absorbing cotton medical dressings, surgical pads, dirt treatment bags, water-blocking yarns and water-blocking tapes, agriculture, forestry, landscaping, desert greening, oil exploitation and the like, is an environment-friendly and renewable non-petrochemical functional material, is green and environment-friendly, and has a very wide application prospect.

The invention provides a pyrolysis coke recycling biomass pyrolysis system and method based on secondary reflection condensation, the system comprises a heliostat field, a secondary reflector, a pyrolysis coke heat collector and a pyrolysis furnace, the heliostat field and the pyrolysis coke heat collector are both installed on the ground, the secondary reflector is arranged above the pyrolysis coke heat collector, and the pyrolysis furnace is arranged above the pyrolysis coke heat collector. The pyrolysis coke heat collector is connected with the pyrolysis furnace; the heliostat field is used for reflecting sunlight to the secondary reflector for condensation, the secondary reflector is used for reflecting the condensed sunlight to the pyrolytic coke heat collector, and the pyrolytic coke heat collector is used for heating pyrolytic coke and transmitting the pyrolytic coke absorbing heat to the pyrolysis furnace; the pyrolyzing furnace is used for taking the heat-absorbed pyrolytic coke as a heat source to generate pyrolytic reaction with biomass, so as to obtain high-temperature pyrolytic coke, flue gas and pyrolytic gas. According to the invention, the height from the pyrolytic coke heat collector to the ground can be reduced, the safety of the system and the operability of maintenance during failure can be improved, the system structure is more compact, and the construction cost is low.

The invention relates to the technical field of oxygen reduction catalysts, in particular to a transition metal-based triatomic oxygen reduction catalyst and a preparation method and application thereof. The invention relates to a preparation method of a transition metal-based triatomic oxygen reduction catalyst. The preparation method comprises the following steps: dispersing carbon nanotubes in a solvent to obtain a dispersion liquid; adding transition metal acetate, urea and 4, 4 '-dihydroxy [1, 1'-biphenyl]-3, 3 ', 5, 5'-tetracarboxaldehyde into the dispersion liquid, performing ultrasonic treatment to obtain mixed liquid, and then performing heating reaction in an inert atmosphere; and after the reaction is finished, naturally cooling to room temperature, filtering, washing and drying to obtain the transition metal-based triatomic oxygen reduction catalyst. The catalyst designed by the invention not only has an efficient catalytic active site, but also remarkably improves the material transmission efficiency and enhances the utilization rate of a catalytic active center by optimizing the structure of a composite material, so that the synergistic enhancement of the electro-catalytic performance is realized.

This application discloses a crystal, a rare-earth-doped crystal, its preparation method, and its applications, belonging to the field of crystal materials. The chemical formula of the crystal is [Gd(L)]. 1.5 (DMA)] n Formula I; in Formula I, L is a ligand formed by deprotonated benzene polycarboxylic acid; benzene polycarboxylic acid is selected from any one of terephthalic acid, phthalic acid, and isophthalic acid; DMA is N , N -Dimethylacetamide; n ∞ represents continuous repetition and infinite extension. The crystal is rare-earth doped, and the chemical formula of the rare-earth doped crystal is [Gd]. 1‑x% (L) 1.5 (DMA)] n :x% Ln 3+ Equation II; in Equation II, x = 0.1~10; Ln 3+ Selected from Tb 3+ Or Eu 3+ Any one of the following. It has potential application value in fields such as fluorescent materials, multicolor display materials, long afterglow materials, X-ray detection and imaging materials, radiation detection dosimeters, and optical information encryption. The preparation method used in this application can be easily achieved through solution reaction under relatively mild conditions, with low cost and strong industrial feasibility.

The present application belongs to the technical field of pesticides, and particularly relates to a fungicide composition for preventing and treating vine gummy stem blight. The fungicide composition for preventing and treating vine gummy stem blight is prepared by compounding thymol with monensin sodium or physcion methyl ether as effective components. The fungicide composition of the present application has different fungicidal mechanisms of thymol, monensin sodium and physcion methyl ether, and the combination of the three components can delay the accumulation and development of pathogenic fungi resistance, and effectively overcome the problems existing in the prevention and treatment of vine gummy stem blight by using single-component pesticides. In addition, the effective components of the fungicide composition of the present application have a synergistic effect on vine gummy stem blight, can improve the prevention and treatment effect on vine gummy stem blight, help to reduce the application dose of the pesticide, and effectively overcome the problems of pesticide residue exceeding the standard and environmental pollution. Furthermore, thymol, monensin sodium and physcion methyl ether in the fungicide composition of the present application are environmentally friendly and green.

An automatic assembling and feeding device relates to the technical field of assembling for vapor chamber production and comprises a workbench, and the workbench is provided with a material disc turnover module, a material grabbing module, a middle positioning module, a feeding module, a material belt opening module and a material pulling module. The middle positioning module is arranged between the grabbing module and the feeding module, the grabbing module grabs products from the material disc turnover module and then places the products on the middle positioning module, and after the middle positioning module positions the products, the feeding module takes away the products and places the products into the material belt opening module. The problems that in the prior art, due to the fact that the positioning precision of products in a tray is low, when the products at different positions are assembled with a material belt, the products and the material belt often interfere with each other, the movement stroke and the position of the material belt cannot be accurately positioned, and the material belt and the products cannot be accurately positioned are solved. And accurate matched installation cannot be realized, so that the assembling efficiency of the product is reduced.

The invention discloses a bacterial strain for antagonizing various pathogens of walnut anthracnose and application of the bacterial strain. The invention provides a serratia sp. AKX-27 strain, and the preservation number of the serratia sp. AKX-27 strain is CGMCC (China General Microbiological Culture Collection Center) NO.32361. The invention also provides an application of the strain or a culture solution thereof or a bacterial solution thereof or a fermentation solution thereof in any one of the following applications: 1) inhibiting pathogenic bacteria of walnut anthracnose; 2) preventing or treating plant walnut anthracnose; and 3) preparing a product for preventing or treating plant walnut anthracnose. The strain is expected to become a new choice for preventing and controlling walnut anthracnose, plays a key role in the field of green prevention and control of plant diseases, and makes an important contribution to promotion of sustainable development of agricultural production. As a biological prevention and control material for walnut anthracnose, the strain has a good application prospect in the development of new biological agents or biological pesticides.

The invention provides a stable and high-flux disc type molecular sieve membrane as well as a preparation method and application thereof, and belongs to the technical field of molecular sieve membranes. According to the invention, the seed crystal suspension containing the organic modifier is coated on the surface of the butterfly ceramic carrier by a one-step method, and meanwhile, the effect of strengthening the binding force of the seed crystal layer and the carrier and the effect of improving the coating effect of the seed crystal layer of the molecular sieve are achieved. And further coating molecular sieve gel synthetic liquid on the surface of the carrier coated with the seed crystal layer to form a gel layer. And finally, putting into a reaction kettle for crystallization treatment to obtain the stable and high-flux butterfly type molecular sieve membrane. The butterfly molecular sieve membrane shows high permeation flux and rejection rate in organic solvent dehydration, and is suitable for industrial organic solvent dehydration.

The utility model relates to the technical field of medical instruments, in particular to a closed blood bag sampler, and aims to solve the technical problems of blood sample pollution and leakage risks when small samples are extracted in the prior art. The closed blood bag sampler comprises a sampling bag, a conveying pipeline and a heat sealing device. The sampling bag is fixedly connected to the outer side of the blood bag through the conveying pipeline, the conveying pipeline is provided with the easily-folded plug, the heat sealing device is clamped to the conveying pipeline, the easily-folded plug controls the sampling bag to be communicated with the blood bag, then the blood bag and the sampling bag are separated in the mode that the conveying pipeline is fused through heat sealing, the operation process is simplified, and the technical requirement is met. And a totally-closed blood bag sampling process is realized. The technical problems of blood sample pollution and leakage risks in an existing blood bag sample extraction process are solved.

The invention relates to the field of new materials and catalytic hydrogen production, in particular to a heterogeneous catalyst and a preparation method and application thereof.The specific preparation method comprises the steps that a metal source and a photosensitizer are added into a mixed solvent of triethylamine and deionized water, sodium hypophosphite monohydrate or sodium hypophosphite is added to serve as a phosphorus source, the mixture is mixed to be uniform, and the heterogeneous catalyst is prepared. Stirring under the illumination of visible light to obtain a heterostructure catalyst dispersed in the solution, and performing post-treatment on the heterostructure catalyst dispersed in the solution to obtain nanoparticles of the heterostructure catalyst; the preparation of the catalyst is driven by visible light, high-temperature calcination or heating treatment is not needed, hydrogen can be generated in situ in the preparation process, the reaction of decomposing sodium hypophosphite to generate hydrogen by the prepared catalyst does not need to be carried out under the photocatalysis or electrocatalysis condition, and hydrogen can be generated by standing at normal temperature.

The invention discloses a high-static cellulose acetate-based electret air filtering material and a preparation method, and belongs to the field of air filtering material preparation, the method comprises the following steps: carrying out electrostatic spinning on a mixed solution of cellulose acetate and CuSO4 in a mass ratio of 1: (0.01-0.04) under the voltage of 18-22 kV to obtain a composite nanofiber membrane; and removing redundant solvent in the composite nanofiber membrane to obtain the high-static cellulose acetate-based electret air filtering material, so that the problem that the electrostatic enhancement effect of the cellulose acetate-based electret air filtering material is relatively weak is solved, the method is simple, the preparation cost is low, and the method is suitable for industrial production. The filtering efficiency and the service life of the cellulose acetate-based electret air filtering material are greatly improved and prolonged.

The utility model relates to the technical field of dehydration, in particular to a vacuum dehydration drying filter pressing system which comprises a filter press, a vacuumizing module and a heating module, a filter chamber is formed in the filter press, and the heating module is communicated with the filter press to heat materials in the filter chamber. And the vacuumizing module is communicated with the filter chamber so as to extract gas in the filter chamber. The utility model aims to provide a vacuum dehydration drying filter pressing system aiming at at least one technical problem related in the background technology.

The invention relates to a method for preparing cyclododecanone oxime, which comprises the following steps: S1, in the presence of a molecular sieve catalyst, carrying out hydrolysis reaction on an oxime compound and water to obtain a hydrolysis reaction product, and carrying out solid-liquid separation on the hydrolysis reaction product to obtain a solid-phase hydroxylamine molecular sieve and a liquid-phase product; and S2, mixing the solid-phase hydroxylamine molecular sieve, cyclododecanone and an optional solvent, and carrying out an oxime exchange reaction. According to the method provided by the invention, the problems that the catalyst and the reaction liquid are difficult to separate and the catalyst cannot be recycled can be effectively solved, the separation and purification process of the product and the reaction liquid in the oxime exchange reaction is effectively simplified, and a relatively high raw material conversion rate can be realized in a reaction system with relatively small dosage of cyclododecanone. In addition, the method disclosed by the invention is simple to operate and mild in condition, can realize continuous feeding and continuous reaction to generate hydroxylamine, and has a relatively good application prospect.

The invention discloses a method for converting synthesis gas into electric energy by using a solid oxide fuel cell. The method comprises the following steps: taking preheated air as a cathode of the solid oxide fuel cell; the synthesis gas after flow regulation and the carbon dioxide after third flow regulation are subjected to a reaction in a gas mixing chamber, and mixed gas is obtained; carrying out second preheating on the mixed gas, and taking the preheated mixed gas as an anode of the solid oxide fuel cell; the cathode and the anode are subjected to an electrochemical reaction in the solid oxide fuel cell, heat is generated based on tail gas generated by the anode and the cathode after the electrochemical reaction, and the heat is used for ensuring the first preheating and the second preheating. Compared with traditional thermal power generation, the method is more efficient, the problems of air pollution, noise and the like caused by the method are fewer, meanwhile, the defects that pollution is generated and the energy conversion efficiency is low in traditional thermal power generation are overcome, and the application potential of the coal underground synthesis gas in power generation is greatly improved.

The present invention discloses a bacterial strain antagonistic to multiple pathogens of walnut anthracnose and its application. The present invention provides Serratia ( Serratia sp.) AKX‑27 strain, whose deposit number is CGMCC NO.32361. The present invention also provides the use of the strain or its culture solution or its bacterial solution or its fermentation solution in any of the following: 1) inhibiting pathogens of walnut anthracnose; 2) preventing or treating plant walnut anthracnose; 3) preparing products for preventing or treating plant walnut anthracnose. The strain is expected to become a new choice for the prevention and control of walnut anthracnose, and play a key role in the field of green prevention and control of plant diseases, making important contributions to promoting the sustainable development of agricultural production. As a biological control material for walnut anthracnose, the bacteria have good application prospects whether it is the development of new biological agents or biological pesticides.

This invention relates to the field of chemical materials, particularly to metal protection in the metal pickling industry, specifically a method for preparing an imidazole-based ionic liquid corrosion inhibitor and its application. The chemical structural formula of the imidazole-based ionic liquid corrosion inhibitor, 1-(4'-biphenylmethyl)-3-(2-ethoxy-2-oxoethyl)-1H-imidazolium-3-onium bromide, is as follows: The imidazole-based ionic liquid corrosion inhibitor of this invention can be used for the protection against acid pickling corrosion of metal materials, and can withstand various changes in cleaning conditions well. In particular, the pickling corrosion inhibitor of this invention has the technical characteristics of low preparation cost, good solubility, good environmental compatibility, low inhibitor dosage, high corrosion inhibition efficiency, stable performance of the corrosion inhibitor, and long continuous action time. Its application range is wide and it is worthy of large-scale promotion and application.

The application discloses a campus intelligent nutrition meal system based on deep semantic understanding and hybrid optimization, relates to the field of intelligent catering data processing, and comprises a voucher generation module, a demand purification module, a chain graph construction module and a hybrid optimization module.The voucher generation module collects system data containing associated text and transaction records, separates original intention and actual substitute dishes through a language model, and generates a will-violating meal replacement counterfactual voucher.The demand purification module calculates the amount of money to be credited back, the amount of money to be deducted, and the amount of missing supply to be supplemented according to the voucher and transaction data, and obtains the purified demand amount by fusion.The chain graph construction module establishes a directed substitution chain edge based on the voucher, calculates the substitution equivalent weight, and generates a substitution chain account graph.The hybrid optimization module establishes constraint conditions and a global objective function based on the purified demand amount and the substitution chain account graph, executes a multi-stage solving logic, and generates an anti-factual backtracking meal operation instruction.The application effectively corrects the underlying flow data polluted by the will-violating meal replacement behavior, breaks the supply-demand mismatch chain, and realizes accurate resource scheduling.

The utility model relates to robot base technical field, concretely is a kind of rotary base of industrial robot, including chassis, its top end middle part is fixedly connected with circular machine case, the upper end of circular machine case is provided with lifting disc, and the bottom end middle part of lifting disc is fixedly connected with motor;The output shaft of motor is fixedly connected with mounting disc through lifting disc, lifting mechanism is arranged between the lifting disc and chassis.

The graphite furnace comprises a shell, a carbon felt layer and a graphite furnace body which are sequentially arranged from outside to inside, a middle area is formed between the graphite furnace body and the carbon felt layer, and a graphite cavity is formed in the graphite furnace body. The method comprises the following steps that a degreased part obtained after a TC4 titanium alloy green body is degreased is put into a graphite cavity to be sintered, so that a TC4 titanium alloy sintered part is obtained, and the sintering process sequentially comprises a thermal degreasing stage, a vacuum sintering stage, a first cooling stage and a second cooling stage; in the thermal degreasing stage, high-purity argon is introduced into the graphite cavity so that the graphite cavity can keep the argon atmosphere; in the vacuum sintering stage and the first cooling stage, high-purity argon is introduced into the graphite cavity and the middle area so that the graphite cavity and the middle area can keep the argon atmosphere. The problem that carbon pollution and oxygen pollution exist when TC4 titanium alloy is sintered in an existing graphite furnace is solved.

The invention relates to a method for preparing cyclododecanone oxime, which comprises the following steps: in the presence of a solid acid catalyst, cyclododecanone, an oxime compound and an optional solvent are mixed for oxime exchange reaction, and the solvent is a non-acidic solvent. According to the method disclosed by the invention, the oxime in the oxime compound is replaced by cyclododecanone under the action of the solid acid catalyst instead of using a liquid acid catalyst, so that the problems that the liquid acid catalyst is difficult to separate from the reaction liquid, the catalyst cannot be repeatedly used and the like are solved; the separation and purification process of the product and the reaction liquid in the oxime exchange reaction process is effectively simplified, and the method is a continuous and green production process and has a better application prospect.

This invention relates to the field of traditional Chinese medicine cultivation technology, specifically the application of D6-abelacterol, and particularly its application in promoting the growth of Panax notoginseng, inducing resistance, and improving its quality. Experiments have shown that D6-abelacterol significantly enhances the resistance of Panax notoginseng to pathogens such as black spot disease, improving its disease resistance; simultaneously, it promotes plant growth, significantly increasing the yield and quality of Panax notoginseng, exhibiting a significant growth-promoting effect. The D6-abelacterol provided by this invention is a natural product, possessing environmentally friendly, low-toxicity, and green properties, laying the foundation for the development of the Panax notoginseng industry.

The invention relates to the field of chemical materials, in particular to metal protection in the metal pickling industry, and particularly relates to a preparation method and application of an imidazolyl ionic liquid corrosion inhibitor. The chemical structural formula of the imidazolyl ionic liquid corrosion inhibitor brominated 1-(4 '-biphenyl methyl)-3-(2-ethoxy-2-oxoethyl)-1H-imidazole-3-onium is # imgabs0. The imidazolyl ionic liquid corrosion inhibitor disclosed by the invention can be used for protecting metal materials from acid pickling corrosion, and can well bear the change of various cleaning conditions; particularly, the acid pickling corrosion inhibition liquid has the technical characteristics of low preparation cost, good solubility, good environmental compatibility, small corrosion inhibitor dosage, high corrosion inhibition efficiency, stable corrosion inhibition liquid performance, long lasting action time and the like, is wide in application range, and is worthy of large-scale popularization and application.