106results about How to "Keep active" patented technology

The invention provides a method for reducing polymer adhesion in ethylene oligomerization. According to the method, a double-kettle series polymerization process is adopted, a phosphine-nitrogen ligand, a chromium metal compound and a cocatalyst are added into a first reaction kettle, a nucleating agent is added into a second reaction kettle, the reaction is carried out in the first reaction kettle in the early stage and transferred to the second reaction kettle in the later stage for continuous reaction, oligomer is converted into high polymer through the nucleating agent, and the high polymer is stored in a particle form; therefore, the phenomenon that the oligomer winds the stirring paddle is reduced or avoided, the aggregation of the polymer in the reaction kettle is greatly reduced, and the operation time of the device is prolonged. The catalytic system can catalyze the ethylene oligomerization reaction with high activity, the catalytic activity reaches up to 10 * 10 < 6 > g product / (molCr.h), the overall selectivity of 1-hexene and 1-octene with high added values can reach 90% or above, and the phenomenon that a polymer is hung on a stirring paddle is greatly reduced.

The invention relates to a montmorillonite-probiotic microsphere preparation as well as a preparation method and application thereof, the microsphere preparation comprises montmorillonite, a probiotic biofilm and functional small molecules, and microspheres of the microsphere preparation are prepared by crosslinking sodium alginate in a collection solution based on a microfluidic technology. The microsphere preparation is mainly used for oral delivery of montmorillonite-probiotic biofilms and functional small molecules, so as to treat intestinal diseases. Compared with the prior art, the microsphere preparation provided by the invention has the advantages of gastric acid invasion resistance, intestinal responsive release and the like, and can effectively treat intestinal inflammation. In addition, the probiotic biofilm wrapped by the microspheres can enhance the interaction with the intestinal mucosa and prolong the residence time in the intestinal tract. Meanwhile, the used functional small molecules have excellent anti-inflammatory and intestinal barrier repairing effects, and can cooperate with the probiotics to regulate and control intestinal flora, so that the intestinal health is further improved.

The group B streptococcus fermentation culture medium comprises salt substances, a carbon source, an amino acid source, a vitamin source, a purine source, a pyrimidine source, a nitrogen source and solvent water, salt substances: 0.2 g / L to 0.5 g / L of dipotassium phosphate, 0.3 g / L to 0.5 g / L of monopotassium phosphate, 3 g / L to 5 g / L of disodium hydrogen phosphate, 2 g / L to 5 g / L of sodium dihydrogen phosphate monohydrate, 0.5 g / L to 0.8 g / L of ammonium sulfate, 0.2 g / L to 0.5 g / L of magnesium sulfate heptahydrate, 0.01 g / L to 0.03 g / L of manganous sulfate monohydrate and 0.03 g / L to 0.06 g / L of ferrous sulfate; an amino acid source: 0.2 g / L to 0.5 g / L of glycine and 0.1 g / L to 0.3 g / L of tryptophan; a nitrogen source: 3-6g / L of acid hydrolyzed casein; the feed also comprises 5-10g / L of yeast extract powder. The group B streptococcus is fermented and cultured by using the fermentation culture medium disclosed by the invention, sufficient nutrient substances can be provided for strains, and the bacterium concentration is effectively improved.

This invention discloses a mouse fixation device for multi-site acupuncture experiments, belonging to the field of mouse acupuncture point experiments. It consists of a support base, a telescopic support rod, and a mouse fixation assembly, which is movably connected to the support rod. The mouse fixation assembly includes a bracket and upper and lower fixation plates, which are adjustable in multiple dimensions via first and second self-locking rotating shafts. The upper and lower fixation plates close with an interference fit between fitting bosses and fitting openings. The central operating port is equipped with a rigid rubber adjustable fixing grid, which, along with a lever, can avoid acupuncture points. The lower fixation plate grid has adhesive straps corresponding to the mouse's limbs and head, with pre-reserved gaps between the plates. A suction cup is provided at the bottom of the support base to stabilize the device. This device achieves double secure fixation of the mouse, with flexible and adjustable operating angles, avoiding acupuncture point obstruction, protecting the mouse from mechanical damage, improving the accuracy and efficiency of acupuncture experiments, and adapting to the needs of multi-site acupuncture experiments on mice.

The utility model relates to an aquatic product cold chain heat preservation box with a partition storage function, which relates to the technical field of cold chain transportation and comprises a box body, a rectangular-ambulatory-plane fence is arranged in an inner cavity of the box body, and the inner cavity of the box body is sequentially divided into an ice block groove for storing ice blocks and a storage groove for storing crabs from outside to inside by the fence. A plurality of conduction holes are evenly formed in the outer surface of the fence and are of a regular hexagon structure, and the conduction holes of the regular hexagon structure form a honeycomb structure on the surface of the fence. According to the aquatic product cold chain heat preservation box with the partition storage function, crab and ice blocks can be conveniently stored in a partition mode, and the humidity level in the box body is guaranteed.

The utility model provides a roe artificial insemination operation table, which relates to the technical field of rainbow trout cultivation and comprises a supporting table, a roe artificial insemination operation table and a roe artificial insemination operation table, the diameter of the filter screen is smaller than or equal to that of the drain hole; the filter screen is detachably connected with the drainage hole; the black-out cloth frame is arranged on the supporting table and used for installing black-out cloth, and the black-out cloth is used for shielding the three side faces and the upper side of the supporting table; and the water faucet is arranged at a specified position above the supporting table and is positioned in the shading cloth frame. By arranging the shading cloth frame and the shading cloth, a shading environment can be provided during insemination operation. And through the arrangement of a filter screen, the roes which are neglected on the supporting table by accident can be collected. And the filter screen is detachably connected with the drainage hole, so that the collected roes can be conveniently poured into the insemination basin again. And through the arrangement of a faucet, the supporting table or the hands of the cleaning worker can be conveniently washed.

The invention relates to the technical field of biomedicine, and discloses a method for constructing and culturing a normal cervical organ, which provides powerful technical support for exploring the pathogenesis of HPV (human papillomavirus) infected normal cervical epithelium.

The invention discloses a method for growing a porous catalyst on a gas diffusion layer, which comprises the following steps: S1, pretreatment of a metal gas diffusion layer: cleaning the surface of the metal gas diffusion layer in an acid solution to remove impurities and an oxide layer on the surface; s2, preparing an electroplating solution, namely preparing the electroplating solution containing catalyst ions and a pore-forming agent; s3, electroplating process: carrying out electroplating reaction on the metal gas diffusion layer treated in the step S1 by utilizing the electroplating solution prepared in the step S2 to form a uniformly distributed porous catalyst layer; and S4, post-treatment: carrying out cleaning and heat treatment on the electroplated porous catalyst layer. The problem that the thickness is not uniform possibly in the spraying process can be avoided, the catalyst layer and the gas diffusion layer substrate are firmly combined and are not prone to falling off, the long-time stability of the catalyst is ensured, a uniform porous structure can be formed in the electroplating process, and the catalytic efficiency of electrolyzed water can be improved.

The present invention relates to the field of crop genetic breeding, and in particular to a method for inducing guava hairy roots without tissue culture. The present invention uses pretreated guava seedlings as explants, uses Agrobacterium rhizogenes carrying a reporter gene and a target gene to infect the explants, and then transfers the infected explants to a culture matrix for cultivation, thereby successfully establishing a simple, low-cost and efficient genetic transformation system for obtaining transgenic materials. Compared with traditional guava genetic transformation methods, the induction method provided by the present invention does not require tissue culture, improves transformation efficiency, shortens the transformation cycle, and also reduces consumables and manpower consumption, thereby solving the problems of complex experimental operation, large-scale equipment and consumables, long cycle and low success rate in the original guava genetic transformation technology, and provides a convenient and efficient tool for the study of guava gene functions (especially root-specific expression of gene functions).

The invention provides a disinfection method of a ginseng explant, which comprises the following steps: soaking and disinfecting the ginseng explant by using a chemical disinfectant, soaking the soaked and disinfected explant into a first ethanol solution, taking out, igniting residual ethanol on the surface of the explant, burning, and cooling. According to the method disclosed by the invention, conventional chemical disinfection and high-concentration ethanol infiltration-flame burning are creatively combined, and the step-by-step and synergistic sterilization strategy is particularly suitable for explants with complicated structures, such as ginseng roots. Compared with a traditional disinfection method needing long-time soaking and multiple times of rinsing, the method has the advantages that the total disinfection time is greatly shortened and the explant preparation efficiency is remarkably improved by introducing an instantaneous firing step, and the explant preparation efficiency is greatly improved by reducing the total contact time of a chemical disinfectant, inactivating surface polyphenol oxidase by utilizing instantaneous high temperature and combining rapid cooling. The browning reaction is effectively inhibited, and the activity of the explant is ensured.

The invention relates to the technical field of surgical biomedical materials, and provides a method for maintaining tissue activity by hydrogel, which comprises the following steps: S1, dissolving a photo-crosslinkable natural polymer material in a solvent, and standing to obtain a first mixed solution; s2, adding a photo-initiation cross-linking agent into the first mixed solution to obtain a photo-curing adhesive precursor solution; s3, pouring the photocuring adhesive precursor solution into a pore plate mold to enable the volume of the photocuring adhesive precursor solution to be matched with the size of the tissue; and S4, completely immersing the tissue into the photocuring glue precursor solution, and carrying out photocuring by adopting in-situ light irradiation to obtain the hydrogel wrapping the tissue. The hydrogel has the advantages that the hydrogel has excellent tissue fixing performance and biocompatibility, and the original activity of a sample is kept for slice preparation under the condition that the tissue sample is not dehydrated and inactivated.

The invention relates to the technical field of organic photocuring, in particular to modified polyurethane, a preparation method and application of the modified polyurethane, a self-repairing antibacterial photocuring coating composition, a preparation method and application of the self-repairing antibacterial photocuring coating composition, and a product of the self-repairing antibacterial photocuring coating composition. A macromolecular chain of the modified polyurethane provided by the invention comprises a polyurethane chain segment, a functional structure unit and an acrylate end-capping group. The modified polyurethane provided by the invention contains the quaternary ammonium salt and has relatively good bactericidal performance, the quaternary ammonium salt is high in stability, the antibacterial ability of a coating film is improved to a certain extent under the synergistic effect of an imidazole ring and the quaternary ammonium salt, and the hardness of the coating film prepared from the modified polyurethane is remarkably improved due to the existence of the imidazole ring; the disulfide bond can partially or completely recover the mechanical property and integrity of the modified polyurethane under the stimulation of external conditions such as light, heat or acid-base, so that the modified polyurethane has good self-repairing property, and the fracture self-repairing rate can reach 90% or above.

The utility model relates to the field of nursery stock transplanting, in particular to a nursery stock transplanting device capable of improving the survival rate. The utility model provides a nursery stock transplanting device capable of improving the survival rate. The nursery stock transplanting device comprises a bottom plate, moving wheels, a placing ring, a fixing plate, a limiting rail, a guide rod, a sliding block, a sliding rail, a limiting ring and the like, a plurality of moving wheels are mounted at the bottom of the bottom plate, a placing ring is arranged on the bottom plate, a fixing plate is mounted on the side face of the bottom plate, a limiting rail is mounted on the bottom plate, guide rods are symmetrically connected into the limiting rail in a sliding mode, sliding blocks are connected into the guide rods in a sliding mode, the sliding blocks are connected with sliding rails, and limiting rings are connected into the sliding rails in a sliding mode. The dug sapling root is wrapped and then placed in the sleeve, a tree trunk is placed in the limiting ring, the rotating ring fixes the tree trunk, the sliding block is moved along the guide rod, the sapling is vertically located in the device, water in soil of the root cannot flow out, the root keeps vitality, and the effect of improving the survival rate is achieved.

The present invention discloses the use of choroid plexus epithelial cells in the preparation of drugs or medical devices for alleviating or treating corneal endothelial damage, corneal endothelial lesions, corneal endothelial dysfunction, and corneal endothelial cell decompensation. The choroid plexus epithelial cells are used to replace corneal endothelial cells to reconstruct and improve the barrier function of the corneal endothelium and thus eliminate corneal edema, reduce corneal thickness, and restore visual function, thereby providing new seed cells and new treatment strategies for the clinical treatment of corneal endothelial decompensation.

The present application relates to a kind of reversible immunomagnetic beads for quickly separating target cells and its preparation method. Specifically, the present application provides a kind of reversible immunomagnetic beads, which includes magnetic carrier, affinity ligand and the connecting arm of the connection between the two, wherein the connecting arm contains a nucleotide sequence that can be specifically recognized by enzyme cutting, preferably containing deoxyinosine (dI) base.The present application also provides a kit comprising the magnetic beads and specific cleavage enzyme (such as endonuclease V).The magnetic beads of the present application can be cleaved by enzyme to achieve mild and rapid dissociation of the magnetic beads and target cells, with high separation efficiency and good cell viability, solving the problem of cell damage caused by irreversible binding of traditional immunomagnetic beads.The present application is simple to operate, does not require complex equipment, and the separated cells can be directly used for in vitro expansion, differentiation or cell therapy, and has wide research and clinical application prospects.

The invention relates to the field of microfluidics, and discloses a device for microfluidics uniform mixing, the device comprises a kit and a sampling piece, the kit is provided with a placing cavity, the sampling piece is in sliding connection with the placing cavity through a transmission assembly, the sampling piece is provided with a sampling hole, and the sampling hole is communicated with the placing cavity. A sampling hole is formed in the kit, the sampling hole can be communicated with the placing cavity through the transmission assembly, the kit is provided with a sample adding opening, a detection area and a plurality of reaction cavities, and the sample adding opening, the detection area and the plurality of reaction cavities are communicated with the placing cavity; according to the device for micro-fluidic mixing, quantitative sampling of a sample is carried out through the sampling holes formed in the sampling piece, upward spraying type mixing of the sample and a reagent is achieved in combination with liquid path flowing on a kit, the shearing force on cells or other biological samples can be reduced by adopting upward spraying type mixing, and the integrity and activity of the samples can be kept; meanwhile, corresponding mechanisms such as a stirring rod do not need to be added, and the product structure is simplified.

The present invention provides a method for ultra-low temperature long-term preservation of fresh dried pepper hybrid pollen, and relates to the technical field of plant or part preservation thereof. The ultra-low temperature long-term preservation method mainly comprises collecting pollen, drying pollen, sealing with inert gas, ice water bath and low temperature cycle pretreatment, step-down precooling, and long-term freezing at minus 80°C. The present invention overcomes the shortcomings of the prior art, can effectively preserve pepper pollen at a temperature of minus 80°C for a long time, and ensures that the thawed pollen has a high activity, thereby improving the effect of pepper pollen, reducing storage costs, and facilitating promotion and use.

The present application relates to the technical field of biological nanomaterials, in particular to a multi-level structure calcium phosphate nanomaterial, a preparation method and application thereof.The present application prepares small-scale calcium phosphate nanoparticles through a biomimetic mineralization strategy, and then crosslinks the same with L-lysine or cystamine dihydrochloride through an EDC / NHS-mediated amide coupling method to form a size-controllable multi-level structure aggregate.Compared with the small-scale calcium phosphate nanoparticles, the multi-level structure, as a doping matrix of metal ions such as Cu and Mn, significantly improves the catalytic efficiency of the metal ions, as a drug carrier, improves the loading capacity of the drug, and the multi-level structure shows a higher tumor accumulation effect.The present application has a simple preparation method, can realize the size regulation of the multi-level structure calcium phosphate nanomaterial, and can realize the tumor microenvironment-responsive disintegration of the multi-level structure.The method has good process repeatability and high batch stability, is suitable for developing high-performance nanodrugs, and has good application potential in the biomedical field.

The invention discloses a method and a device for multi-flux in-situ tracing of organoid metabolic flux based on melting DNP. The method comprises the following steps: developing an organoid vitality maintenance technology, a super target molecular probe quality control and shunting technology and combining CSI with a selective excitation technology; a set of multi-flux in-situ real-time metabolic flux tracing method suitable for the organoid is established, a multi-flux multi-metabolic small molecule metabolic flux detection technology is developed, in-situ tracing of an organoid metabolic pathway which is faster and more sensitive than that of a conventional scheme can be provided, and a new technical scheme is expected to be provided for research of an organoid model. According to the method, the metabolic flux detection tracing under the organoid in-situ culture condition can be realized, the high-flux detection tracing can be realized, and the sensitivity and the accuracy are high.

The present invention provides a method for freezing and preserving bovine semen, and relates to the technical field of semen freezing. The method for freezing and preserving bovine semen mainly comprises the following steps: feeding the breeding cattle with mixed folic acid, lycopene, anthocyanin, and anisene in the early stage, artificially collecting semen, adding caffeine, dendrobium phenol, chlorogenic acid, and pinoresinol diglucoside to a basic semen diluent, diluting the bovine semen, precooling the diluted bovine semen, and finally subjecting the precooled semen to low-temperature treatment and then freezing with liquid nitrogen. The present invention overcomes the shortcomings of the prior art, can effectively reduce the effect of freezing on the vitality of bovine semen, ensure the motility and plasma membrane integrity of bovine sperm after freezing, and provide a good foundation for cattle breeding.

The invention relates to the technical field of terahertz security check, and discloses a flat plate type terahertz human body imaging security check system and equipment, which comprises a parameter acquisition module, a parameter comparison module and a degree response module. In the secondary inspection process, the similarity of the second contraband is compared with the similarity of the first contraband, and only when the similarity of the second contraband is equal to or higher than the similarity of the first contraband, the marked suspected contraband is manually inspected. And the condition that the similarity of the second contraband is smaller than that of the first contraband is released, so that all suspected contrabands are not manually inspected once on the basis of ensuring strict inspection from reality, and the security inspection efficiency and the passing efficiency of the to-be-inspected personnel are ensured.

The present invention provides a method for improving the sexual reproduction efficiency of Suaeda salsa, and belongs to the technical field of Suaeda salsa reproduction. The method of the present invention includes collection and storage of Suaeda salsa seeds, pre-sowing vitality detection and management, and planting management; the seed collection includes collecting Suaeda salsa seeds with a moisture content of ≤10% and a purity of ≥95%; the storage conditions are temperature ≤10°C and relative humidity ≤75%; the pre-sowing vitality detection includes a germination rate of more than 85%, and the pre-sowing management includes soaking seeds in fresh water for 6-10h; the planting management includes planting in spring, applying basal fertilizer to the soil available N content of ≥120mg / kg, and irrigating fresh water once in spring and summer. The present invention manages the collection and storage of Suaeda salsa seeds, performs vitality detection before sowing, and adjusts the planting management method, so as to promote the germination of Suaeda salsa seeds and the growth of seedlings, and improve the sexual reproduction efficiency of Suaeda salsa.

The invention relates to the technical field of food biology, in particular to a method for predicting the activity of amylase subjected to an inactivation process or inactivated amylase. The invention provides a method for predicting an inactivation process based on required amylase activity, which comprises the following steps: providing the required amylase activity, presetting an inactivation temperature, and calculating the inactivation time by adopting an amylase activity-inactivation time prediction model according to the required amylase activity. The invention also provides a method for predicting the activity of the inactivated amylase based on the inactivation process, which comprises the following steps: providing the inactivation temperature and the inactivation time, and calculating the activity of the inactivated amylase by adopting the amylase activity-inactivation time prediction model according to the inactivation temperature and the inactivation time. The method disclosed by the invention has relatively good predictive capacity, and is beneficial to accurately controlling the inactivation process conditions; by optimizing the inactivation process, the production time and cost can be reduced, and the production efficiency is improved; the enzyme activity is strictly controlled or the enzyme is inactivated, so that the food quality safety is ensured.

The application discloses a kind of functionalized magnetic beads, which are magnetic microspheres formed by wrapping magnetic beads with bifunctional nucleic acid, and can specifically bind mRNA.A fungal mRNA extraction kit composed of functionalized magnetic beads includes grinding material, lysing solution I, lysing solution II, magnetic bead binding solution, washing solution I, washing solution II and eluent.A mRNA extraction method includes sequentially adding grinding material, lysing solution I, lysing solution II, magnetic bead binding solution, washing solution I, washing solution II and eluent after sample pretreatment to obtain mRNA product.The application breaks through the traditional mRNA extraction method, obtains high-quality mRNA, and has the advantages of simple operation, safety, high sensitivity, good reproducibility and low cost.The mRNA obtained by the application can provide high-quality templates for RT-PCR detection, improve the specificity and sensitivity of detection, and has wide application prospects in the fields of clinical diagnosis of diseases, judicial identification, food safety detection, microbial detection and molecular biology.

The invention relates to the field of fish ecology, in particular to a fish migration dam-passing auxiliary system which comprises a driving wheel and an annular cable, the two ends of the interior of the annular cable are sleeved with the driving wheel and a driven wheel respectively, a suspension box is fixedly arranged on the cable and comprises a fixing plate and a box body, the top end of the fixing plate is connected with a rope clip through a suspension rod, and the rope clip is fixedly connected with the cable. The lower portion of the fixing plate is connected with a box through a lifting assembly, the box is of a hollow structure with the bottom open, a communicated sliding groove is formed in one inner wall of the box and the bottom box wall, a supporting plate is slidably installed in the sliding groove, the two sides of one end of the supporting plate are connected with the two ends of a chain respectively, and the chain is driven by a chain wheel and a chain wheel motor. The chain drags the supporting plate to move to the opening in the bottom of the box body from the inner wall of the box body through the sliding groove to achieve blocking. Trapped fish schools migrated to the dam are transferred to a target water area through the box body, the fish school migration success rate is increased, and the number and variety diversity of the fish schools are maintained; oxygen is automatically supplied into the running box body, so that the survival rate of fish schools is ensured.

The invention discloses a method for realizing cross-process communication in an Electron based on pipelines. The method comprises the following steps: creating a first pipeline and a second pipeline in the Electron; opening the development application and the third-party application of the Electron, and linking the development application and the third-party application to the first pipeline and the second pipeline; the development application is on line to generate an on-line message and sends the on-line message to the third-party application through the first pipeline, and the third-party application reads the on-line message and waits for data interaction between the development application and the third-party application; the development application / the third-party application generates a data interaction message and sends the data interaction message to the third-party application / development application through the first pipeline / the second pipeline, and the third-party application / development application reads the data interaction message and analyzes data in the data interaction message to complete data interaction. According to the invention, the safety and reliability of cross-process communication are ensured.

The present invention relates to the technical field of enzyme activity determination, and discloses a guanosine deaminase activity detection method, which comprises: carrying out centrifugation on a guanosine deaminase production fermentation broth, collecting wet thalli, carrying out resuspension by using a PBS phosphate buffer solution, carrying out centrifugation again to collect the wet thalli, and recording the mass of the wet thalli, re-suspending the wet thalli by adopting a Tris-HCl buffer solution, adding lysozyme for cracking, ultrasonically crushing at low temperature and centrifuging to obtain a crude enzyme solution, and recording the total volume of the crude enzyme solution; preparing a reaction system, adding the crude enzyme solution into the reaction system to serve as an experimental group, adding a Tris-HCl buffer solution with the same amount as the crude enzyme solution into the reaction system to serve as a blank control group, carrying out oscillation reaction, adding NaOH to terminate the reaction after the reaction is finished, and recording the reaction time; respectively measuring the peak areas of the xanthosine in the experimental group and the blank control group by using high performance liquid chromatography, and calculating the content of the xanthosine by using an external standard method; and finally, calculating to obtain the enzyme activity of each gram of wet thalli. The detection method is simple, efficient, few in impurities and high in accuracy.

The invention relates to a freeze-drying protection solution containing ribonucleic acid and application of the freeze-drying protection solution. The freeze-drying protection solution is prepared from the following components: wild almond oil polyglycerol-6 esters, polyglycerol-10 oleate, erythritol, trehalose, crithmum maritimum callus culture filtrate and DNA sodium. The freeze-drying protection liquid provided by the invention can prevent the structural integrity of the plant exosome, reduce the osmotic pressure difference inside and outside cells and maintain the cell activity, and also can avoid the influence of stress on the biological activity of the plant exosome in the freeze-drying process, thereby maintaining the stability of the biological activity of the plant exosome.

The present invention relates to a Chinese medicine composition for invigorating qi and promoting blood circulation and its application in preparing a drug for treating cardiovascular aging. The composition comprises 13 kinds of Chinese medicinal materials: epimedium and / or epimedium extract, schisandra and / or schisandra extract, gynostemma pentaphyllum and / or gynostemma pentaphyllum extract, psoralea corylifolia and / or psoralea corylifolia extract, acanthopanax and / or acanthopanax extract, ginseng and / or ginseng extract, licorice and / or licorice extract, osmanthus fragrans and / or osmanthus fragrans extract, immature bitter orange and / or immature bitter orange extract, tangerine peel and / or tangerine peel extract, angelica and / or angelica extract, white peony root and / or white peony root extract, red peony root and / or red peony root extract. The Chinese medicine composition for invigorating qi and promoting blood circulation of the present invention is obtained by extracting and matching different active ingredients of 13 kinds of Chinese medicinal materials to obtain the best formula, which can significantly improve the antioxidant activity of the body, promote macrophage proliferation, slow down the aging speed of the body, and maintain the vitality of the body.

The present invention provides a doped iridium oxide catalyst and a preparation method and application thereof. The doped iridium oxide catalyst comprises low-crystallinity iridium oxide and a corrosion-resistant metal doped in the low-crystallinity iridium oxide; the corrosion-resistant metal is selected from any one or more of titanium, zirconium, hafnium, vanadium, niobium or tantalum. In the process of preparing the doped iridium oxide catalyst, the corrosion-resistant metal and the acid-labile metal are introduced into the precursor, and the corrosion-resistant metal is added to the IrO x During the formation process, some Ir sites are replaced, forming in-situ doping of corrosion-resistant metals (denoted as "M"), constructing a large number of Ir-O-M bridge bond interfaces, which has the effect of regulating the electronic structure of Ir and O, thereby improving the operating stability of the catalyst. In addition, the acid-labile metals are removed in the subsequent pickling process, creating abundant defect sites, which reduces the IrO x The effect of crystallinity can effectively maintain the high activity of the catalyst.