192results about How to "Promote accumulation" patented technology

The invention discloses a dual-prevention intelligent interaction system based on a large language model, and belongs to the technical field of artificial intelligence. The system comprises a big language base model, a knowledge base management module, an agent module, a multi-modal big model and an evaluation module, and the big language base model understands user intentions and processes natural language tasks and provides token processing capacity for other modules; the knowledge base management module is used for classified storage and management of professional knowledge, establishing indexes according to semantics and finally performing localized storage; the intelligent agent module is used for analyzing input of a user, and different workflows are packaged in different intelligent agents so as to provide personalized services for the user; the multi-modal large model module receives voice input by a user, converts the voice into characters, transmits description of information to the Agent, generates answers by analyzing semantics, converts the characters into the voice and sends the voice to the user; the evaluation module establishes an evaluation index system from the four aspects of accuracy, answer correlation, context correlation and context recall rate.

The invention relates to the technical field of organic fertilizers and planting of watermelons and muskmelons, and provides a special fertilizer for milk irrigated watermelons and muskmelons and a double-stubble planting method for sweetness enhancement of milk irrigated watermelons and muskmelons. The special fertilizer for the milk irrigated watermelons and muskmelons comprises black goat manure, sophora alopecuroide, sesame seed meal, bran, organic fresh milk, brown sugar and zymophyte. The black goat manure is pulverized into powder by a pulverizer, the sophora alopecuroide is pulverizedinto 1 cm to 2 cm, and the ratio of the black goat manure, the sophora alopecuroide, the sesame seed meal, the brans, the organic fresh milk, the brown sugar and the zymophyte is 2700-3200: 80: 50: 150: 5: 1. The double-stubble planting method for sweetness enhancement of the milk irrigated watermelons and muskmelons comprises the following steps: selection of a nursery seedling plate and soil, cleaning and germination accelerating of seeds, soil preparation, transplanting, irrigation, topdressing, shaping and forking of watermelon and muskmelon vines and fruit bearing of the watermelons and the muskmelons. The problems that in an existing watermelon and muskmelon planting process, soil nutrients are damaged due to the fact that chemical fertilizers are used for a long time, and the sweetness of melons is reduced are solved.

The invention provides application of a soybean GmWRKY40 gene in soybean breeding, and belongs to the technical field of functional gene breeding. The nucleotide sequence of the soybean GmWRKY40 gene provided by the invention is as shown in SEQ ID NO: 1. According to the invention, the GmWRKY40 gene is constructed into a skeleton expression vector to obtain a recombinant vector, and the recombinant vector is transferred into soybean under the mediation of agrobacterium tumefaciens to obtain a transgenic plant with stable overexpression of the GmWRKY40 gene. Detection results show that overexpression of the GmWRKY40 gene can significantly improve the grain isoflavone content and the protein oil content of the transgenic soybean, improve the soybean quality and increase the soybean grain yield at the same time. Therefore, the soybean GmWRKY40 gene can be used for developing new varieties of high-quality soybeans.

The invention relates to the technical field of microorganisms, and provides heteromorpha sp. RXH-HY13 and application of the heteromorpha sp. RXH-HY13. The invention provides a dysococcus globosum RXH-HY13, which is preserved in the China Center for Type Culture Collection on July 11, 2024, the preservation number of the dysococcus globosum RXH-HY13 is CCTCC NO: M 20241535, and the preservation number of the dysococcus globosum RXH-HY13 is CCTCC NO: M 20241535. The invention also provides an application of the special-shaped algae RXH-HY13. The special-shaped algae RXH-HY13 is used for enriching at least one of organic selenium and carotenoid in a selenium ion stress environment; the invention also provides another application of the heteromorphic algae RXH-HY13. The application comprises the step that the heteromorphic algae RXH-HY13 is used for preparing a product rich in at least one of organic selenium and carotenoid. The special-shaped algae RXH-HY13 provided by the invention has certain tolerance to a selenium ion stress environment, so that the special-shaped algae RXH-HY13 not only can enrich organic selenium in the selenium ion stress environment, but also can promote accumulation of various carotenoids, and has the effect of synergistically enriching the organic selenium and the various carotenoids.

The invention discloses corynebacterium glutamicum for producing N-acetylglucosamine and application of the corynebacterium glutamicum, and belongs to the technical field of synthetic biology. Specifically, the corynebacterium glutamicum overexpresses a GNA1 gene from a brewer's yeast S288C controlled by a tacM promoter, a glmS gene from corynebacterium glutamicum S9114 and a yqab gene from escherichia coli K12 MG1655, and simultaneously has five gene defect types of nagA, nagB, ldhA, msccg and msccg2 in a genome and two gene single base mutation types of odhA and glnA, and the codon of the glnA for coding the 405th amino acid is mutated from TAC to TTC. By blocking excretion of glutamic acid of corynebacterium glutamicum and enhancing conversion of glutamic acid to glutamine, the supply capacity of a precursor of corynebacterium glutamicum is enhanced, and an optimal way for synthesizing N-acetylglucosamine is obtained, so that efficient production of N-acetylglucosamine in corynebacterium glutamicum is realized, and the yield of N-acetylglucosamine in corynebacterium glutamicum is increased. The method has important economic value and social significance.

The invention discloses an LLM-based intelligent question and answer method and system for operation and maintenance knowledge, relates to the technical field of artificial intelligence, and provides an efficient knowledge management and update mechanism which can continuously absorb latest operation and maintenance knowledge and technical practice, and operation and maintenance personnel can upload new knowledge documents to the system through a data entry unit, so that the operation and maintenance knowledge can be quickly and conveniently answered. After verification of the data checking unit, the knowledge can be automatically partitioned and vectorized and supplemented into the knowledge base, the mechanism not only ensures timeliness and accuracy of the knowledge base, but also promotes accumulation and inheritance of the knowledge, new operation and maintenance personnel can quickly obtain necessary knowledge and skills through the system, and the operation and maintenance efficiency is improved. In addition, the system also supports the processing of multi-round dialogues and context relevance problems, so that the solution of complex problems is smoother and more efficient.

The invention discloses fermented lactobacillus mucus Z-15 and application thereof in preparation of fermented bread, belongs to the technical field of microorganisms, and provides the fermented lactobacillus mucus Z-15 which is preserved in the China Center for Type Culture Collection on January 5, 2024, the preservation address is Wuhan University, Wuhan, China, and the preservation number is CCTCC NO: M2024024. The method for preparing the fermented bread comprises the following steps: mixing the fermented lactobacillus mucus Z-15, sterile water and high gluten flour, and standing to obtain sour dough; mixing with high gluten flour, kluyveromyces marxianus GY-8, white granulated sugar, salt and water, then adding butter, standing for fermentation, performing secondary fermentation to obtain bread dough, and baking to obtain the fermented bread. According to the method disclosed by the invention, the flavor of the bread obtained by co-fermentation of the lactobacillus mucus Z-15 and the kluyveromyces marxianus GY-8 is remarkably improved.

The invention provides a micro-unit code branch management method based on GitLab and DevOps, and belongs to the field of research and development test management.According to the method, GitLab is adopted for branch management, Dev serves as a trunk for development, function development is conducted through a derived branch MyDev, and after testing, the MyDev is merged to a Release branch, and Tag issuing is conducted. And aiming at an online problem, repairing from a Release branch and printing a new Tag. Meanwhile, in combination with DevOps practice, automatic testing, code review, safety review and automatic packaging deployment are carried out, each large process and link are divided into micro-units, and smooth and efficient automatic implementation of the version control and release process is ensured.

The invention relates to the technical field of agriculture, and discloses an organic-inorganic compound fertilizer containing humic acid, which comprises the following components in percentage by mass: 5-25% of nitrogen; 9%-26% of phosphorus; 8%-28% of potassium; 5%-10% of humic acid; 60%-80% of an organic material; 0.5%-2% of medium trace elements; 0.5%-1% of a microbial agent; the organic material comprises but is not limited to lignite, straw powder or a combination thereof; the medium trace elements comprise the following components in percentage by mass: 30%-40% of zinc; 20% to 30% of iron; 10% to 20% of calcium; 20% to 30% of magnesium; the microbial agent comprises one or more of nitrogen-fixing bacteria, phosphorus dissolving bacteria and potassium dissolving bacteria. Nitrogen, phosphorus, potassium, humic acid and medium trace elements are chelated, so that nutrients are in a stable release state in soil, and the problem of nutrient loss caused by too fast dissolution of a conventional fertilizer is effectively avoided.

The invention aims to provide a method for improving nutritional quality of germinated brown rice through ultrasonic-assisted salt induction. Brown rice is a whole-grain product and is rich in nutritional ingredients such as starch, protein, dietary fibers, vitamins and mineral substances and active functional factors. The nutritional ingredients of the germinated brown rice change drastically, and the nutritional value of the brown rice is greatly improved. According to the method, brown rice is taken as a raw material, the brown rice is soaked in a CaCl2 salt solution under the assistance of ultrasound, the germination temperature and time are optimized, the concentration of the CaCl2 salt solution is taken as an influence factor, and the change rule of nutritional ingredients and functional factors of the brown rice in the germination process is researched. Results show that after ultrasonic-assisted salt induction treatment, the contents of vitamin B2 and vitamin B6 in the germinated brown rice are increased to 58.2 mu g / 100g and 0.438 mg / 100g, and the content of gamma-aminobutyric acid is increased to 42.6 mg / 100g (dry basis). The germination of the brown rice promotes the activation and release of hydrolases such as amylase, protease and phytase, and nutritional ingredients in the brown rice are migrated, degraded, accumulated and the like, so that the nutritional quality of the brown rice is remarkably improved.

The invention discloses an artemisia apiacea transcription factor AaMYC3 with an amino acid sequence as shown in SEQ ID NO: 2 and application of the artemisia apiacea transcription factor AaMYC3. The Artemisia apiacea transcription factor AaMYC3 not only can be combined with and activate promoters of artemisinin biosynthesis key enzyme genes CYP71AV1 and ALDH1, but also can be combined with and activate a promoter of an Artemisia apiacea glandular hair development key gene AaHD1, and can act together with AabHLH1 and AabHLH113 to activate ADS and DBR2 gene promoters. Biosynthesis of artemisinin is promoted by positively regulating and controlling artemisinin biosynthase genes and glandular hair body density, and the method is of great significance to cultivation of new varieties with high artemisinin content and large-scale production.

The invention discloses a production method of N-acetylneuraminic acid based on artificial double carbon sources, and belongs to the technical field of genetic engineering. Escherichia coli with high yield of N-acetylneuraminic acid as a carbon source is taken as an original strain, 6-phosphofructokinase is knocked out, glycerol kinase is knocked out, a glycerol kinase mutant is introduced, PTS phosphotransferase I is replaced by glucose-promoted diffusion transporter, and a promoter is optimized, so that the N-acetylneuraminic acid with high yield is obtained. The recombinant escherichia coli can grow with glucose and glycerol as double carbon sources, N-acetylneuraminic acid is synthesized, the yield under the pore plate level reaches 9.2 g / L, meanwhile, the generation amount of acetic acid is extremely low, and a new direction is provided for large-scale production of N-acetylneuraminic acid.

The invention discloses a method for preparing fatty acid by anaerobic fermentation of organic solid waste, which comprises the following steps: S1, inoculating activated sludge into an anaerobic reactor, and adding the organic solid waste for anaerobic fermentation; s2, part of fermentation products are discharged from the anaerobic reactor in the anaerobic fermentation process, the discharged fermentation products are subjected to solid-liquid separation to obtain biogas residues, the organic solid waste and the biogas residues are added into the anaerobic reactor, and the volume ratio of the biogas residues to the organic solid waste is 1: (6-10); s3, the step S2 is repeated, anaerobic fermentation is continuously carried out, and organic solid waste treatment is completed. According to the method, the organic carbon source in the organic solid waste can be continuously and efficiently converted into the fatty acid, the method has the advantages of being simple in process, low in cost, high in preparation efficiency, high in substrate utilization rate, high in fatty acid yield, high in medium-chain fatty acid proportion and the like, and a new way is provided for efficient resource utilization of the organic solid waste.

The invention relates to the technical field of agricultural planting, and discloses a one-hole double-plant densification planting method for carbon composite all-weather oxygen supply targeted efficiency improvement for corn, which comprises the following steps: step 1, in a soil preparation stage, applying an organic carbon source substance to improve the soil structure and improve the water and fertilizer retention capability of soil; step 2, before corn sowing, applying a microbial source biostimulant in combination with a base fertilizer, activating soil microorganisms, and promoting carbon source decomposition and nutrition conversion; step 3, a one-hole double-plant densification planting design is adopted, and two corn plants are planted in each hole, so that the planting density in unit area is increased. The organic sugar carbon fertilizer is applied in the soil preparation stage, and the fertilizer contains water-soluble carbon, humic acid and amino acid, so that the structure of soil is effectively improved, the water and fertilizer retention capacity of the soil is improved, the organic matter content of the soil is increased, and a better growth environment is provided for growth of crop roots.

The utility model provides an automatic dedusting and deacidifying spray tower, which comprises a tower body, a demister and more than two groups of deacidifying devices are sequentially arranged in the tower body from the top of the tower body to the bottom of the tower body, each deacidifying device comprises a filler layer and a spray pipeline arranged above the filler layer, the spray pipeline is provided with more than two spray nozzles facing the filler layer, and the spray nozzles are communicated with the deacidifying devices. The spraying directions of the adjacent spraying heads are different and form an included angle theta which is more than or equal to 45 degrees and less than or equal to 90 degrees; the bottom of the tower body is provided with an inverted-cone-shaped sediment opening, the sediment opening is connected with a filtering device, the filtering device is connected with a circulating water tank, the circulating water tank is connected with a spraying pipeline through a circulating pump, spraying nozzles in different spraying directions are arranged, liquid can be sprayed out in the different spraying directions, the spraying angles of the spraying nozzles are large, and the spraying effect is good. Different areas of the filler layer can be covered, so that liquid is uniformly distributed on the filler layer, waste gas can be in full contact with the liquid in the different areas of the filler layer, and the purification effect on the waste gas is good.

The invention relates to the technical field of biology, in particular to a method for solid state fermentation of bagasse by using white rot fungi, which comprises the following steps: (1) activation and propagation of strains: pouring the white rot fungi into a PDA culture medium for activation and propagation; (2) raw material preparation: air-drying fresh bagasse, adding water to adjust the water content of the bagasse to 60-70%, and adjusting the pH to 4-6 with glacial acetic acid; and (3) preparing the bagasse feed, namely mixing the white rot fungi subjected to expanding culture according to 1-5% of the weight of an air-dried substance with bagasse of which the initial pH is adjusted to be 4-6, adding 1-5% of soluble sugar, and fermenting for 10-45 days to obtain the fermented bagasse feed. According to the white rot fungus fermented bagasse prepared by the method disclosed by the invention, the hemicellulose content of the bagasse can be reduced to 26.62%-22.45%, the lignin content can be reduced to 10.67%-8.66%, the crude protein content of the bagasse can be increased to 1.61%-2.12%, the lactic acid content can be increased to 26.57 mg / L-181.69 mg / L, and high-quality feed application of the bagasse can be realized.

The utility model provides a double-layer mulching film suitable for citrus growth, which comprises an upper-layer film and a lower-layer film, the upper-layer film is the upper-layer film, the lower-layer film is the lower-layer film, the upper-layer film and the lower-layer film are overlapped up and down, and the edge of the upper-layer film and the edge of the lower-layer film are detachably adhered together. The upper-layer film and the lower-layer film are detachably adhered together, during daily field operation, the upper-layer film and the lower-layer film are separated, the upper-layer film is rolled up, only the lower-layer film is used for covering, the upper-layer film is unfolded 2 months before ripening to reflect light so as to promote coloring and improve quality, and after fruits are ripe and picked, the double-layer film is rolled up to a planting row, so that the yield of the fruits is increased. The positive fertilizer is applied, and normal operation is not affected. The double-layer film disclosed by the utility model can meet the requirement of annual production of citrus, and achieves the functions of inhibiting weeds, reflecting light, preventing water, prolonging the service life of the double-layer film and the like.

This invention discloses *Aphelenchus brittleus* and its applications, relating to the field of microbial technology. The strain is taxonomically named *Aphelenchus brittleus* (…). Acaulospora delicata The specimen, with accession number CGMCC NO.42100, is a *C. cristatum* NM26B that can improve the yield and quality of chives, enhance mineral nutrient absorption, and increase the expression of genes synthesizing chive-specific aroma compounds. This lays the foundation for future research and development of suitable microbial agents for the development of the chive industry.

The utility model relates to computer hardware technical field discloses a set top box mainboard entity structure of optimization wiring layout, including set top box and host board, the inside installation of host board has heat abstract mechanism, heat abstract mechanism is used for the heat dissipation of host board, the top wall of machine body is provided with dust removal mechanism, dust removal mechanism is used for the dust removal of machine body, heat abstract mechanism includes micro motor, micro motor installs in the inside of host board, the output fixedly connected with pivot no.

The present application relates to the technical field of feed processing, and particularly relates to a preparation method of Maotai-flavor distiller's grains fermented feed, which comprises the following steps: drying treatment based on the moisture content of Maotai-flavor distiller's grains to obtain basic distiller's grains; determining the strain ratio of brewer's yeast, bacillus subtilis and aspergillus niger based on the tannin content of the basic distiller's grains to obtain a compound fermentation inoculant; inoculating and then fermenting; determining state evaluation parameters based on the total polyphenol accumulation rate, the dissolved oxygen consumption rate and the microbial activity index during the fermentation process, and performing qualified evaluation, and dynamically adjusting when unqualified; determining the fermentation end point based on the tannin degradation rate and the total polyphenol accumulation rate; and mixing the fermented distiller's grains with the basic feed at a mass ratio of 1% after low-temperature drying of the fermented distiller's grains. The present application realizes three-layer control of raw material evaluation, process control and end point determination, significantly improves the stability and content of functional active ingredients in the product, reduces the tannin and safety risk, and has a good intestinal health improvement effect on animals.

The invention provides a microalgae nutrient solution and application thereof, and belongs to the technical field of agriculture. The invention provides a microalgae nutrient solution. The microalgae nutrient solution comprises nitrogen-fixing blue-green algae and photosynthetic nutrient green algae, the content of algae single cells in the microalgae nutrient solution is greater than or equal to 1.0 * 10 < 6 >. The microalgae nutrient solution provided by the invention, as a microalgae fertilizer, can significantly improve the activities of urease, sucrase and catalase in soil and reduce the activity of polyphenol oxidase in the soil; the content of alkali-hydrolyzable nitrogen in soil is increased, and the nitrogen fertilizer absorption amount of beet is improved; the richness of soil microbial communities can be increased, and the number of actinomycetes and proteobacteria is increased; growth and development of the beet can be remarkably promoted, the plant height, fresh weight, leaf number, chlorophyll content and net photosynthetic rate of the beet can be improved, accumulation of dry matter of beet tuberous roots can be promoted, timely transfer of beet growth centers can be regulated, and then the yield and sugar yield of the beet can be increased.

The invention relates to a grape tartaric acid biosynthesis key enzyme VvTSAD4 as well as a coding gene and application thereof, and belongs to the technical field of biological gene engineering. The amino acid sequence of the grape tartaric acid biosynthesis key enzyme VvTSAD4 is as shown in SEQ ID NO. 1. The invention also discloses a recombinant expression vector containing the key enzyme VvTSAD4 for biosynthesis of grape tartaric acid, a recombinant genetic engineering bacterium or a transgenic plant tissue, and an application of the key enzyme VvTSAD4 for biosynthesis of grape tartaric acid. Expression of the grape tartaric acid biosynthesis key enzyme VvTSAD4 can promote biosynthesis of tartaric acid in grape fruits, the content of tartaric acid in grapes is increased, and the grape tartaric acid biosynthesis key enzyme VvTSAD4 is easy to popularize and apply.

The particle separator comprises an oil baffle ring fixed to an air inlet of a fan shell through a flange ring, the cross section of the oil baffle ring is in a C shape, a center shaft is arranged in the center of the inner side of the oil baffle ring, and one end of the center shaft is in transmission connection with an impeller shaft in the fan through a clutch mechanism. The central shaft is sleeved and fixedly connected with a shaft sleeve, the shaft sleeve is provided with an oil-smoke separation assembly, the air inlet end of the oil baffle ring is provided with a rough filtration mechanism, and the other end of the central shaft is in transmission connection with the rough filtration mechanism; the oil fume separation assembly comprises a mesh support and two oil fume separation meshes, the two oil fume separation meshes are installed on the two sides of the mesh support, a plurality of oil scraping plates are arranged on the outer side edge of the mesh support, an oil leakage opening is formed in the bottom of the oil baffle ring, and the position, corresponding to the oil leakage opening, of the bottom of the oil baffle ring is fixedly connected with an oil receiving box through a bolt assembly. According to the particle separator for the fan, energy loss is reduced, the operation efficiency and durability of the impeller are improved, and the service life of the motor is prolonged.

This invention belongs to the field of agricultural herbicides and provides a photosynthetic inhibitor herbicidal composition comprising 5-aminolevulinic acid, malondialdehyde, and a herbicidal active ingredient. The herbicidal active ingredient is selected from one or a combination of several herbicides selected from acetolactate synthase inhibitors, photosynthetic system II inhibitors, or protoporphyrinogen oxidase (PPO) inhibitors. This invention utilizes the synergistic effect of 5-aminolevulinic acid, malondialdehyde, and a specific type of herbicidal active ingredient to effectively enhance the efficacy of the herbicidal active ingredient, enabling rapid and thorough weed control.

The invention provides a rapid red sandalwood edgeworthia chrysantha promoter and a rapid red sandalwood edgeworthia chrysantha edgeworthia chrysantha edgeworthia chrysantha The invention provides a red sandalwood rapid edgeworthia chrysantha promoter which is prepared from the following raw materials in parts by weight: 2-3 parts of rice, 1-2 parts of herba ecliptae, 0.8-1.2 parts of red-knees herb and 0.8-1.2 parts of lemongrass. The preparation method of the red sandalwood rapid edgeworthia chrysantha promoter comprises the following steps: respectively weighing rice, eclipta, red-knees herb and lemongrass in parts by weight, mixing and crushing, adding water according to a material-liquid ratio g / ml of 1: (1-2), placing in a sealed fermentation tank, sealing and fermenting for 30-40 days, filtering to obtain a fermentation liquid, adding a composite strain, and fermenting for 30-40 days to obtain the red sandalwood rapid edgeworthia chrysantha promoter. The preparation method comprises the following steps: uniformly mixing a fermentation strain consisting of Bosella thiooxidans, Verticillium theobromae and Bacillus pasteurii, carrying out sealed fermentation for 7-8 days, filtering, and taking a filtrate, so as to obtain the rapid Pterocarpus santalinus Edgeworthia chrysantha Edgeworthia chrysantha (L.) DC. After the method is adopted for treatment, formation of the red sandalwood heartwood is effectively accelerated and promoted, and meanwhile the quality of the red sandalwood heartwood is effectively improved.

The present invention discloses a protein capable of activating plant immune induction function and its encoding gene, expression vector and application. The present invention discovers that the protein derived from Pythium ultimum ( The last Pythium ) is a gene that can trigger plant hypersensitive response (HR) and reactive oxygen species (ROS) accumulation, named PyEli4. Objective evaluation using the Agrobacterium-mediated transient expression system found that it can stimulate HR, promote ROS accumulation, and significantly increase the expression of PTI-related pathway genes, proving that it can effectively activate plant immunity and disease resistance. It is helpful for the research and development of plant immune inducers. The powerful function of this gene can be used as a candidate gene for the development of plant immune inducers, and can also be used to directly introduce genes into plants using transgenic technology to develop and cultivate disease-resistant varieties.

The invention discloses a pneumatically-driven air conditioner pipeline intelligent self-cleaning and real-time monitoring system which comprises an air conditioner pipeline, the air conditioner pipeline is provided with a modular connecting clamping head used for connecting pipelines, and through holes are formed in different parts of the inner wall and the outer wall of the air conditioner pipeline and the modular connecting clamping head; a modularized through hole clamping type plug is arranged on the through hole, and a movable pneumatic blowing system is detachably and fixedly connected into the modularized connecting clamping head and used for blowing air to the two ends of the modularized connecting clamping head to remove dust; the system further comprises a negative pressure adsorption device, one or more dust monitoring sensors and a control end. The dust monitoring system, the blowing system for cleaning and the negative pressure type adsorption system for adsorbing dust are additionally arranged in the pipeline system, dust is conveniently removed through blowing of the blowing system, and finally the dust is adsorbed to the outside through the negative pressure type adsorption system, so that dust monitoring and cleaning are integrated, cleaning of the air conditioner pipeline is greatly facilitated, and the cleaning efficiency of the air conditioner pipeline is improved. And the labor burden is reduced.

This invention discloses an end-face coated crystal optical element for a laser resonator and its fabrication method, belonging to the field of optical element fabrication. It includes an optical crystal, a high-reflectivity film disposed on one end face of the optical crystal, and a partially transmissive film disposed on the other end face. The high-reflectivity film sequentially includes Y-coatings along the end face of the optical crystal outwards. b F3 First Floor, H f O2 first layer, Y b F3 Second Layer, H f O2 second layer...Y b F3, Q layer, H f O2, Q layer. This invention utilizes Y... b 3+ Sensitization improves pump absorption efficiency and through Y b To E r Energy transfer effectively alleviates high-doped E r The self-termination effect in YAG lasers enables high efficiency and high energy output of 2940nm lasers, making them suitable for fields such as medical aesthetics and precision machining.

The invention discloses a method for preparing fermented burdock root inulin, belonging to the technical field of biological fermentation. The technical scheme thereof mainly includes the following preparation steps: (1) pretreatment of burdock root: washing and slicing fresh burdock root and then soaking the root in citric acid solution; (2) fermentation: spraying a bacterial strain aqueous solution on the pretreated burdock root for fermentation treatment; (3) adding water to the fermented product obtained in step (2), grinding the product into a slurry, and then filtering the product to obtain a fermentation liquid; (4) filtering the fermentation liquid through an ultrafiltration membrane, and then purifying the product by a crystallization or chromatography method to obtain the inulin, thereby solving the problem of low inulin extraction rate in the burdock root.