1091results about How to "Improve tolerance" patented technology

The invention relates to the technical field of biological pharmacy, and discloses a probiotic microcapsule with a function of improving intestinal microecology, which comprises the following components in percentage by weight: lactobacillus rhamnosus: each gram of formula contains 1010 CFU of lactobacillus rhamnosus; lactobacillus acidophilus: each gram of the formula contains 109 CFU; clostridium butyricum: each gram of the formula contains 108 CFU; 5%-8% of a nano sodium alginate-chitosan compound; 3%-5% of peptide nanoparticles; 2%-4% of a natural polymer intelligent response film; 3%-6% of arabinoxylan oligosaccharide; 4%-7% of resistant dextran; 2%-4% of lentinan; and 0.1%-0.3% of resveratrol. Through a double-layer or three-layer embedding technology of the nano sodium alginate-chitosan compound and the intelligent response polymer film, the tolerance of the probiotics in gastric acid and cholate environments is remarkably enhanced, and targeted release of the probiotics in small intestines and colon is ensured.

The invention discloses an aluminum-plastic composite panel with a fireproof structure, and relates to the technical field of aluminum-plastic composite panels, the aluminum-plastic composite panel comprises a fireproof layer, and a top aluminum plate mounting plate is mounted at the bottom of the fireproof layer. Then, the heat is transferred to a heat-conducting metal conduction sheet plate and then transferred to a wire fixing heat-conducting end, so that the temperature is rapidly increased, the wire fixing heat-conducting end transfers heat to a polyethylene fracture node, so that the polyethylene fracture node is melted and fractured, a polypropylene fiber connecting wire ring losing support also melts, a limiting hook is released, and a needling trigger piece rapidly punctures a flame-retardant gas storage device; the flame-retardant gas is released, and the flame-retardant gas is quickly diffused to the periphery of the flame along with the quick release of the flame-retardant gas to form a protective layer, so that the contact between the flame and surrounding combustible materials is effectively isolated, and further spreading of the fire behavior is slowed down or even stopped.

The invention belongs to the field of molecular biology and immunology, and particularly relates to an anti-CD3 nano antibody capable of activating the activity of T cells as well as a preparation method and application of the anti-CD3 nano antibody. The invention provides a preparation method of the anti-CD3 nano antibody. The preparation method comprises the following steps: constructing a CD3 plasmid and an overexpression cell line, and immunizing alpaca to obtain peripheral blood mononuclear cells (PBMC) of the alpaca; extracting RNA (Ribonucleic Acid) and carrying out reverse transcription to obtain cDNA; carrying out PCR amplification on the antibody gene segment and cloning the antibody gene segment to a phage display vector; and electrically transforming the vector into SS320 competent cells to obtain the nano antibody library. After two rounds of panning, detecting and screening an antibody clone capable of being combined with the CD3 protein through ELISA (Enzyme-Linked Immunosorbent Assay); an antibody sequence is selected through sequencing, and an antibody protein is expressed by using a mammalian cell high-throughput expression system; and then detecting and screening the antibody which is only specifically combined with the CD3. The method disclosed by the invention is simple, convenient and rapid to operate, and can be used for preparing active antibodies for treating potential tumors and proliferative diseases.

The invention discloses a compound enzyme preparation for improving the absorption and utilization rate of a fertilizer and a preparation method thereof, and belongs to the technical field of enzyme preparations. The compound enzyme preparation is prepared from the following components in parts by weight: 100 parts of purified water, 6 to 8 parts of modified cellulase, 10 to 12 parts of immobilized protease, 10 to 12 parts of phosphatase, 10 to 14 parts of urease, 8 to 10 parts of nitrate reductase, 10 to 12 parts of pectinase, 8 to 10 parts of chitinase, 6 to 8 parts of xylanase, 10 to 12 parts of beta-glucosidase, 10 to 12 parts of superoxide dismutase and 4.5 to 6 parts of a microbial agent, the modified cellulase is obtained by chemically modifying cellulase; the immobilized protease is prepared by the following steps: adsorbing activated and coupled modified polylactic acid and a protease solution, crosslinking with glutaraldehyde, filtering, washing and drying. The compound enzyme preparation improves the fertilizer absorption and utilization rate of plants.

The invention discloses a battery charge state prediction method and system based on a convolutional neural network. The method comprises the following steps: acquiring power consumption data of a battery; preprocessing the power consumption data; obtaining a first predicted SOC of the battery at each sampling time according to a double-Kalman filtering algorithm and the power utilization data; forming a data set by using the power consumption data and the first predicted SOC; dividing the data set into a training set, a verification set and a test set; constructing a convolutional neural network model CNN; training a convolutional neural network model by using the training set to obtain a trained convolutional neural network model; verifying the trained convolutional neural network model by using the verification set to obtain a convolutional neural network model passing verification; and testing the verified convolutional neural network model by using the test set to obtain a second predicted SOC of the battery at the next moment. The method can effectively improve the quality of a data set, reduces the introduction of errors, and improves the precision of a prediction result.

The invention discloses a method for estimating and predicting a power exchange coefficient of an air-sea interface based on AI and multi-source fusion data, a medium and a program product, and aims to improve the accuracy of numerical simulation, forecasting, scientific research and the like of air-sea interaction. Comprehensively considering the wind speed at the height of 10 meters and other various meteorological and ocean variables, and reconstructing a calculation formula of an air-sea interface power exchange coefficient; collecting and preprocessing multi-source data, and constructing a multi-source fusion data set; constructing an AI model by adopting a deep learning algorithm, extracting spatial-temporal characteristics in the data, and estimating Cd '; by optimizing the model structure and parameters, the generalization ability and the prediction precision are improved; the prediction result is applied to numerical simulation of air-sea interaction, and the model is updated regularly based on new observation data. The method has the advantages of high precision, dynamic updating and wide applicability, and is suitable for the fields of weather forecast, ocean dynamics research and the like.

The invention provides a compound DOTA-HX2-DZ and application thereof, and belongs to the technical field of biological medicine. According to the invention, the molecular structure of DZ-HX2-DOTA is optimized, and a special connexon is designed and adopted, so that the problem of limited anti-tumor curative effect caused by poorer stability, fat solubility, tumor residence time and other properties of a radiolabeled drug in the prior art is solved. The compound provided by the invention can significantly reduce the risk of label removal of radioactive metal ions in an in-vivo environment, and ensures that the compound stably plays a role at a targeted part; the compound has excellent molecular lipid solubility, can penetrate cell membranes and vascular barriers more easily, improves the bioavailability of drugs, prolongs the in-vivo circulation time, prolongs the tumor residence time, and further improves the treatment efficiency. The DZ-HX2-DOTA disclosed by the invention has broad-spectrum tumor targeting property, and can be used for diagnosing and treating various types of malignant tumors.

The invention discloses a lactobacillus delbrueckii subsp. Lactis TG001 and application thereof in improving oral health, and belongs to the technical field of probiotic application, the preservation number of the lactobacillus delbrueckii subsp. Lactis TG001 is CCTCC NO: M 20241941, the preservation place is China Center for Type Culture Collection in Wuhan, and the preservation date is September 9, 2024. The lactobacillus delbrueckii subsp. Lactis TG001 has a good inhibition effect on common oral pathogens such as streptococcus mutans and porphyromonas gingivalis, particularly can inhibit the growth of cariogenic bacteria streptococcus mutans by generating hydrogen peroxide and remove biofilm formation, and has good tolerance to antibacterial substances in an oral environment. Therefore, the oral cavity diseases such as dental caries, periodontitis and ozostomia can be prevented, the micro-ecological environment of the oral cavity is effectively improved, meanwhile, the peculiar smell of the oral cavity is relieved, and good application prospects are achieved in preparation of products for preventing and / or treating the oral cavity diseases such as dental caries and periodontitis.

The invention provides an animal bifidobacterium subsp. Lactis HNU329 with uric acid reducing ability and application thereof, the animal bifidobacterium subsp. Lactis HNU329 is preserved in Guangdong Microbiological Culture Collection Center GDMCC, the preservation address is Institute of Microbiology, Guangdong Academy of Sciences, on 5th floor, No. 59, No. 100 Courtyard, Xianlie Middle Road, Guangzhou, the preservation date is April 22, 2024, the preservation number is GDMCC No: 64546, and the preservation number is CGMCC No: 64546. The preparation method comprises the following steps of: classifying and naming Bifidobacteria animata subsp.lactis, and carrying out classification and naming on the Bifidobacteria animata subsp.lactis. The strain has good capacity of degrading nucleoside and purine in vitro, also shows good uric acid reducing capacity and anti-inflammatory capacity in animal model evaluation, and can regulate intestinal flora of mice with hyperuricemia and improve symptoms of hyperuricemia. The traditional Chinese medicine composition has no toxic or side effect, high safety and wide application prospect.

The invention discloses a collagen composition for skin substrate repair and skin care application thereof, and the collagen composition comprises the following components: 1-3% of soluble III-type collagen, 1-5% of hyaluronic acid, 1-2% of plant extract, 0.1-0.5% of allantoin, 0.2-0.5% of dipotassium glycyrrhizinate, 1-5% of glycerol, 1-5% of butanediol, 1-5% of 1, 2-propylene glycol, 1-5% of 1, 3-propylene glycol, 1-5% of propylene glycol and the balance of water. The cleaning agent is prepared from the following components in percentage by weight: 1 to 2 percent of 1, 2-hexanediol, 0.1 to 0.5 percent of phenoxyethanol, 0.1 to 0.5 percent of ethylhexylglycerin, 0.1 to 0.5 percent of carbomer, 0.1 to 0.5 percent of triethanolamine and the balance of water. The collagen III is added, so that the problems of wrinkles and skin aging are remarkably relieved. According to the skin-care lotion, the oily composition and the water-based composition are reasonably proportioned, so that excellent moistening and moisturizing effects are provided, the moisture balance of the skin is favorably maintained, and the skin is kept soft and moist. The added plant extract, hydrolyzed protein and mineral substances not only nourish and repair the skin, but also can improve various skin problems, enhance the endurance capacity of the skin and avoid the condition that the skin wrinkles are increased during the period of stopping using.

The invention relates to a preparation method of a nanofiltration membrane, the nanofiltration membrane prepared by the preparation method and application of the nanofiltration membrane. The method comprises the following steps: preparing a membrane casting solution, curing the membrane casting solution on a support material to form a base membrane, and the membrane casting solution comprises a polymer and a solvent; the base membrane is in contact with a first phase solution and a second phase solution in sequence, the first phase solution comprises a first phase monomer, an adsorbent A, an active agent B and an acid-binding agent C, and the second phase solution comprises a second phase monomer and a cross-linking agent D; and post-processing. The nanofiltration membrane disclosed by the invention has excellent tolerance to high-concentration strong oxidizing acid or mixed acid, still keeps high flux and high salt rejection rate even after being soaked in the high-concentration strong oxidizing acid or mixed acid for a long time, can stably operate for a long time under high pressure, and has high flux and high salt rejection rate at the same time; the method can be effectively applied to the fields of waste acid treatment in the titanium dioxide production process, extraction and separation of lithium battery raw materials, mineral product smelting metal ion and acid recovery and the like for filtration and / or separation.

The invention discloses an OsFBX421 gene and application of the OsFBX421 gene in the aspect of improving the salt tolerance of rice. The nucleotide sequence of the OsFBX421 gene is as shown in SEQ ID NO: 1 in a sequence table. The invention further discloses a phenotype of an OsFBX421 gene mutant strain under treatment of 120 mM NaCl, and the protein and the coding gene thereof have important theoretical and practical significance on research of a plant salt-tolerant mechanism and improvement of salt tolerance and related traits of plants, can play an important role in plant salt-tolerant molecular breeding and have wide application prospects.

The invention relates to the technical field of storage systems, in particular to a communication board card and a storage system. The invention provides a communication board card which is applied to a storage system and comprises at least one controller connecting slot position and at least one communication network port. Wherein each controller in the storage machine head of the storage system is mounted to the communication board card through each controller connecting slot, and is in communication connection with the storage disk cabinet of the storage system based on each communication network port in the communication board card. Therefore, an independent network card does not need to be configured for each controller, so that the cost can be reduced, and the communication between each controller and the storage disk cabinet of the storage system is not influenced.

The invention belongs to the technical field of functional microorganism screening and application, and particularly relates to a strain with a purine reducing function and application thereof. The lactococcus lactis AMCC 11671 (Lactococcus lactis AMCC 11671) provided by the invention is preserved in the China Center for Type Culture Collection (CCTCC), and the preservation number of the lactococcus lactis AMCC 11671 is CCTCC NO: M 2024078. The lactococcus lactis AMCC 11671 provided by the invention has good crude enzyme activity, can effectively slow down the generation and accumulation of uric acid by reducing the purine content and degrading uric acid, has good tolerance to acid and cholate, has the ability to tolerate gastrointestinal tract environment, and has potential of colonization in human gastrointestinal tracts and play roles.

The invention discloses a concrete modular integrated building connecting system which comprises connection of a plurality of concrete modular box bodies, each concrete modular box body is composed of a prefabricated top plate, a prefabricated bottom plate, a prefabricated beam, a prefabricated shear wall and a prefabricated partition wall, and each concrete modular box body is formed through integral pouring; a reserved post-pouring area is arranged at the joint of every two adjacent box components, and notches are formed in the prefabricated top plates; connecting steel bars are in lap joint with the notches, and concrete post-pouring is conducted after the steel bars are in lap joint; u-shaped notches are formed in the prefabricated beams, upper and lower lap joint steel bars are laid at the U-shaped notches, and the two half sections of the prefabricated beams are connected into a whole after concrete is cast in place; a linear vertical notch is formed in the prefabricated shear wall between every two adjacent box bodies, the rib bodies of the wall bodies are connected in the linear notches, all the box bodies are stably connected through lap joint of the reinforcing steel bars and cast-in-place concrete of the cavities, and the prefabricated shear wall is suitable for high-rise buildings, can reduce the workload of a construction site and has good mechanical performance and anti-seismic performance.

According to the probiotic agent for enhancing the immunity and improving the intestinal flora and the application of the probiotic agent, five specific different types of bifidobacterium strains are compounded, potential interaction exists among the five strains, and the five strains can cooperate with one another, so that the effect of enhancing the immunity and improving the intestinal flora is achieved. The bifidobacteria has the advantages that the bifidobacteria has synergistic interaction in the aspects of promoting the growth of immune organs and increasing the total quantity and diversity of intestinal flora, the bifidobacteria is matched with basic fermentation strains for yogurt fermentation, meanwhile, the composite prebiotics are added for synergistic yogurt fermentation, the quantity of the bifidobacteria at the end of a shelf life after the yogurt fermentation is finished is still not less than 1 * 10 < 8 > CFU / mL or 1 * 10 < 8 > CFU / g, and the content of the bifidobacteria is not less than the stability of lactic acid bacteria in the yoghourt is remarkably improved, so that the number of viable bacteria which enter the intestinal tract of a human body and play roles is remarkably increased, and the yoghourt has relatively good tolerance in the intestinal tract; the prepared yoghurt is fine and smooth in texture, rich in taste and rich in fragrance; in addition, the immune decline and intestinal flora disorder caused by cyclophosphamide (CTX) can be remarkably improved, and a positive effect on immunological enhancement is achieved.

The invention belongs to the field of water ecological restoration, and particularly relates to a riverway water ecological restoration method based on an ecological floating blanket, ecological floating blanket-fish-microorganism is utilized to construct an ecological restoration system to improve a riverway water body, and the ecological floating blanket comprises plants, a carrier, a nylon net, a planting matrix and an inorganic filler; the selected plants are subjected to pollutant degrading bacterium inoculation and tolerance experiment domestication; inorganic filler is hung on the lower part of the ecological floating blanket through a nylon net; the nylon net is subjected to membrane pre-hanging treatment, so that a layer of yellowish-brown biological membrane is formed on the surface of the nylon net; the planting substrate is a combination of multiple of chitosan-potassium alginate coating melamine polyurethane composite foam, biochar, scrap iron and alum sludge ceramsite; the plant provided by the invention is high in tolerance and can efficiently adsorb and degrade pollutants; the planting matrix provided by the invention promotes each other and efficiently adsorbs pollutants; the constructed ecological floating blanket-fish-microorganism ecological planting and breeding technology can promote a receiving river channel to form a food chain system with a healthy water body.

The invention discloses an environment-friendly safe low-smoke halogen-free cable, and relates to the technical field of cables, the environment-friendly safe low-smoke halogen-free cable comprises a cable assembly, the cable assembly comprises an outer sheath, the outer surface of the outer sheath is fixedly communicated with an air outlet assembly, a plurality of conductors are arranged in the outer sheath, each conductor is hollow, and the outer surface of the outer sheath is fixedly communicated with the air outlet assembly. A plurality of filling pipes are arranged among the exteriors of the plurality of conductors, and the plurality of filling pipes are hollow; according to the environment-friendly safe low-smoke halogen-free cable, when the temperature of air around the cable is low, cold air enters the hollow conductor from the air inlet, air convection is formed in the conductor, heat is taken away and then discharged from the air outlet, and when excessive heat is generated in the use process of the conductor, the heat can enter the filling pipe through the multiple drainage holes, so that the cable is protected. And heat can flow in the conductor, so that excessive local heat dissipation of the conductor can be prevented.

The invention provides a Trichoderma asperellum TAZ19, a biocontrol inoculant and application of the Trichoderma asperellum TAZ19, the Trichoderma asperellum TAZ19 is preserved in the China Center for Type Culture Collection on October 25, 2024, and the preservation number of the Trichoderma asperellum TAZ19 is CCTCC M 20242341. The active ingredients of the biocontrol inoculant comprise the trichoderma asperellum TAZ19 strain, and the trichoderma asperellum TAZ19 strain is one or more of conidia, hypha, fermentation filtrate or active extracts of the trichoderma asperellum TAZ19 strain of the trichoderma asperellum TAZ19 strain. The trichoderma asperellum TAZ19 has an excellent antagonistic effect on a plurality of plant disease pathogenic bacteria such as dispora pinnatifida, a plurality of fusarium oxysporum, apple black beancurd skin fungi and botryosphaeria dothidea, has broad-spectrum antibacterial activity, is high in growth speed, high in antibacterial activity and high in hyperparasitism ability, has better saline-alkaline tolerance, also has a growth promoting effect on plants, and can be widely applied to the field of plant diseases. The strain can be used as an active component of a biocontrol inoculant to be widely applied to prevention and treatment of various plant diseases such as pine tree branch rot, wheat stem rot and tomato fusarium wilt, and has a wide application prospect.

The invention discloses an application of an ABC transporter family gene OsABCA3 in regulation and control of plant breeding. Belongs to the field of plant genetic engineering. According to the application of the ABC transport protein family gene OsABCA3 in plant breeding regulation and control, the amino acid sequence of the protein encoded by the ABC transport protein family gene OsABCA3 is shown as SEQ ID No: 2. According to the invention, the ABC transporter gene OsABCA3 is knocked out in rice, so that the Cd absorption in a knockout plant under Cd stress is obviously reduced compared with that of a wild type plant, the Cd content of grains in the knockout plant planted in Cd-polluted soil is obviously reduced compared with that of the wild type plant, but the content of essential elements in the grains and the yield of rice are not negatively influenced; therefore, a new candidate gene resource is provided for creating safe rice with low Cd grains, and a potential repair method is also provided for rice Cd pollution treatment.

The invention relates to the technical field of health care product preparation, and particularly discloses an oyster peptide enzyme oral liquid capable of enhancing immunity and a preparation method thereof, the oyster peptide enzyme oral liquid comprises the following components: 20 parts of oyster peptide, 50 parts of plant enzyme liquid, 5 parts of honey, 2 parts of fructo-oligosaccharide, 2 parts of lemon juice and 100 parts of purified water; the oyster peptide enzyme oral liquid contains rich natural antioxidant ingredients including oyster peptide and plant enzyme liquid, the oyster peptide contains a large amount of sulfur-containing amino acid, and the ingredients can be used as antioxidants to reduce generation of free radicals and protect cells from oxidative damage; the plant enzyme is rich in natural antioxidant enzyme, can promote synthesis of antioxidant enzyme in vivo and remove free radicals in vivo so as to slow down senescence and diseases, the oyster peptide and the enzyme act together to improve the activity of catalase in vivo, and oxidative stress is reduced by removing superoxide anion free radicals.

The invention discloses an anti-HCV (hepatitis C virus) core antigen monoclonal antibody, a hybridoma cell strain and application, and particularly relates to the hybridoma cell strain screened according to a common conserved sequence of core proteins of different genotypes of HCV, the antibody secreted by the hybridoma cell strain is applied to HCV antigen detection, different genotypes of hepatitis C viruses can be detected, and the monoclonal antibody has good inclusiveness and can be applied to detection of HCV antigens. The technical effect can be realized by only two antibodies, so that the production cost of the HCV antigen detection kit can be reduced, the production difficulty can be reduced, and the production efficiency can be improved.

The invention discloses a zero-valent iron-carbon source-anaerobic digestion bacterium sustained-release microcapsule as well as preparation and application thereof, and belongs to the technical field of wastewater treatment. The preparation method comprises the following steps: S1, preparing a biochemical mixed embedding liquid containing an embedding material and a gel; s2, adding the biochemical mixed embedding liquid obtained in the step S1 into a cross-linking liquid, and performing cross-linking treatment to obtain the zero-valent iron-carbon source-anaerobic digestion bacterium sustained-release microcapsule, in the step S1, the embedding material comprises zero-valent iron, anaerobic digestion bacteria and a carbon source, and the zero-valent iron, the anaerobic digestion bacteria and the carbon source are jointly fixed inside and on the surfaces of the porous particles, so that loss of the zero-valent iron and the anaerobic digestion bacteria is effectively prevented, and passivation of the zero-valent iron is reduced; moreover, the carbon source is embedded in the immobilized particles, so that slow release of the carbon source is effectively realized, and dynamic balance of carbon source supply and biological requirements is realized.

The invention discloses a preparation method and application of a flexible resistance-type humidity sensor based on Zn / Ag / PEO nanowire stacking, and the method comprises the steps: putting particle-free ink into electrospinning direct-writing equipment, and depositing a plurality of layers of Zn / Ag / PEO conductive fibers with a certain structural morphology on a film according to a pre-designed track perpendicular to the direction of an interdigital electrode; and sintering to form the flexible humidity sensor with excellent humidity response performance and environment tolerance. The flexible resistance-type humidity sensor prepared by the invention has excellent humidity sensitivity, high response sensitivity, wide response range and high stability.

The invention relates to a fluxazole amide composition and a preparation method thereof. More specifically, the present invention relates to synergistic compositions of fluoxazole amides and methods of preparing stable and non-phytotoxic formulations, the synergistic composition comprises fluoxazole amide or an agrochemically acceptable salt thereof, an insecticide selected from diamides, at least one or more compounds selected from insecticides, fungicides and plant health additives, and an agrochemically acceptable excipient. The invention further relates to pesticidal compositions for controlling harmful pests in plants, which can be formulated, are environmentally safe, exhibit high efficacy, and act on disease resistance management or delay the development of disease resistance by employing a variety of modes of action, plant tolerance against insect pests, mites, fungal and bacterial diseases and abiotic stress is increased and the overall health and vigor of the treated plant is improved.

The invention relates to the technical field of semiconductor devices, in particular to a manufacturing method of an avalanche high-voltage silicon stack, and the method comprises the steps: randomly obtaining a diode distribution vector and a doping concentration vector according to the range of the working voltage of the avalanche high-voltage silicon stack and the number of sub-modules; simulating avalanche high-voltage silicon stacks by the aid of simulation software to obtain simulation qualified vectors, silicon stack power and voltage distribution vectors; calculating a simulation qualified rate; obtaining a voltage adaptation degree of each voltage distribution vector; obtaining a high voltage weight, and carrying out weighted summation on the voltage adaptation degree to obtain a high voltage tolerance degree; and obtaining a voltage-sharing effect evaluation value, and obtaining a final manufacturing scheme of the avalanche high-voltage silicon stack by adopting an optimization algorithm. The invention aims to balance the divided voltage between the diodes in the silicon stack, improve the voltage distribution uniformity, improve the tolerance to high voltage, and reduce the Zener breakdown risk.

The invention discloses application of OsHTT4 protein in regulation and control of heat resistance and yield of rice. According to the invention, a CRISPR / Cas9 gene editing system is utilized to perform mutation on a rice OsHTT4 gene, and an OsHTT4 protein function deletion mutant strain is constructed. The heat stress of the obtained mutant strain shows that the tolerance of the rice to the heat stress can be remarkably improved by inhibiting the expression of the OsHTT4 protein. In addition, by inhibiting the expression of the OsHTT4 protein, the grain number per ear, the yield per plant, the tiller number and the maturing rate of the rice can be remarkably improved, and the rice yield is improved. On the basis, the invention further provides a method for improving the heat stress tolerance and / or yield of the rice, and the method is beneficial to cultivation of heat stress-resistant and high-yield rice varieties.

The invention discloses a method and device for solving casting bleed-out of a nitrogen-containing cobalt-chromium-molybdenum mother alloy bar, and the method comprises the following steps: pressing operation: driving a lower pressing roller to perform fixed-axis rotation on the inner wall of a rectangular through groove through a motor, so that an upper pressing roller and a lower pressing roller synchronously roll an aluminum silicate felt, and the density of the aluminum silicate felt is increased; cutting operation: an eccentric block is eccentrically placed on a second belt pulley, so that a cutting blade can perform equidistant cutting on the rolled aluminum silicate felt on the surface of the workbench, the accuracy of the size of the mold is ensured, and fixed operation: during cutting, a sleeve rod drives a pressing plate to synchronously move downwards, so that the pressing plate can be stably pressed on the aluminum silicate felt; displacement or deformation of the aluminum silicate felt in the cutting process is avoided, and it is guaranteed that the surface of the cut aluminum silicate felt is smooth.

The invention provides an acid and alkali resistant metallic yarn preparation method, which comprises: 1, mixing polyvinylidene fluoride, polyvinylpyrrolidone and a solvent, and carrying out electrostatic spinning to form a PVDF / PVP composite fiber membrane; soaking the PVDF / PVP composite fiber membrane in an aqueous solution, taking out the PVDF / PVP composite fiber membrane after soaking, cleaning and drying to obtain a PVDF fiber membrane with a groove structure; step 2, soaking the PVDF fiber membrane with the groove structure in slurry containing flaky aluminum powder, a cross-linking agent and polyacrylate emulsion, and after soaking is completed, sequentially carrying out rolling and high-temperature drying to obtain a PVDF fiber membrane with an aluminum coating; 3, the PVDF fiber membrane with the aluminum coating is cut into filaments, then a polyester yarn coating layer and a protective coating are sequentially formed on the surface of the PVDF fiber membrane cut into the filaments, and the acid and alkali resistant metallic yarn is obtained. According to the method, the binding strength of the aluminum coating and the fiber membrane is improved, full coating of the aluminum wires is achieved, and the acid and alkali resistance of the metallic yarn fabric in the subsequent dyeing and finishing process is remarkably improved.

The invention discloses salt-tolerant xylanase and application thereof, and relates to the technical field of biology. The amino acid sequence of the salt-tolerant xylanase is as shown in SEQ ID NO: 1. According to the invention, a new xylanase gene xynaes is separated from a metagenome of Xinjiang Aiding Lake, and the xylanase belongs to the GH10 family and has low homology with reported xylanase. The recombinant xylanase has high activity and tolerance at a high temperature, has good performance in an alkaline environment, has high tolerance to various metal ions, quickly loses activity under SDS treatment, and should be prevented from being in contact with SDS in industrial production.