141results about How to "Reduce degradation" patented technology

The invention discloses a preparation method of a flame-retardant anti-aging polyolefin plastic, and belongs to the technical field of polyolefin material processing.The preparation method comprises the steps that a modified anti-aging agent is mixed with a DOPO-based flame retardant modified by introducing isocyanate and epoxy groups, the mixture is added into a polyolefin material, during combustion, carbon formation is promoted by the phosphorus element, and the flame-retardant anti-aging polyolefin plastic is obtained. The flame retardant and nitrogen element synergistically play a flame-retardant role, meanwhile, epoxy groups in the flame retardant and carboxyl of polypropylene are subjected to a ring-opening reaction, the crosslinking degree of the material is enhanced, the modified anti-aging agent can effectively capture free radicals and inhibit oxidative degradation, and the mechanical strength and flame-retardant effect of the material are improved. According to the modification method, the anti-aging, high-temperature-resistant and flame-retardant properties of the polyolefin plastic are remarkably improved, the stability of the polyolefin plastic in high-temperature and severe environments is enhanced, the service life is prolonged, and the mechanical property and the thermal stability of the polyolefin plastic are improved.

The invention discloses a train communication network intrusion detection method based on a multi-scale residual network, and the method comprises the following steps: building a train communication network topological structure model, and building a traffic model for the mixed transmission of normal traffic and intrusion traffic; collecting a flow data packet in a link as an original data sample in the intrusion detection data set, and performing preprocessing to obtain a data sample containing statistical characteristics; a train communication network intrusion detection MSRNet-GLAM model is constructed, and the performance of the train communication network intrusion detection MSRNet-GLAM model is checked and evaluated, so that the MSRNet-GLAM model can learn key feature information of a data sample in a multi-scale manner; and training and optimizing the MSRNet-GLAM model by using the improved focus loss function, and performing intrusion detection on the traffic data of the train communication network to be detected to obtain a traffic detection result of the train communication network. The method can effectively solve the problems of low security and difficulty in detection of intrusion traffic under the trend of mass data communication of the train communication network, and ensures the security of the train network.

The invention discloses a flame-retardant eutectic polymer electrolyte based on in-situ polymerization, a preparation method and a solid-state lithium battery, and belongs to the technical field of lithium battery polymer electrolytes.The preparation method comprises the following steps that in the inert gas atmosphere, an amide hydrogen bond donor and alkali metal salt are evenly mixed, and a mixture is obtained; the eutectic electrolyte is obtained by utilizing the interaction of Li-N and Li-O; adding a functional additive, an ester polymer monomer and an initiator into the eutectic electrolyte, and uniformly mixing to obtain a precursor solution; and injecting the precursor solution into a diaphragm in a lithium ion battery to be assembled, sealing, and performing in-situ free radical polymerization reaction to form the flame-retardant eutectic polymer electrolyte, thereby obtaining the solid-state lithium battery of the flame-retardant eutectic polymer electrolyte based on in-situ polymerization. The eutectic polymer electrolyte disclosed by the invention has a flame-retardant property, the safety of the lithium battery is greatly improved, meanwhile, the eutectic polymer electrolyte has high ionic conductivity, the rate capability of the battery is improved, and stable long circulation of the assembled solid-state lithium battery is realized.

The invention discloses a triazine desulfurizer and a preparation method thereof, and belongs to the technical field of gas purification. The triazine desulfurizer is mainly prepared from the following raw materials in percentage by weight: 20 to 50 weight percent of triazine derivative, 10 to 15 weight percent of sterically hindered amine, 3 to 7 weight percent of stabilizer, 1 to 3 weight percent of synergist, 0.5 to 1.5 weight percent of penetrant, 0.5 to 1.5 weight percent of inhibitor, 1 to 2 weight percent of additive and the balance of water, the preparation method of the triazine derivative comprises the following steps: adding 2-(diphenylphosphino) ethylamine into a toluene solvent, adding a paraformaldehyde aqueous solution in batches under a stirring condition, and reacting for 2-8 hours to obtain the triazine derivative. According to the triazine desulfurizer and the preparation method thereof provided by the invention, the triazine derivative and the sterically hindered amine are taken as a host, and the stabilizer, the synergist, the penetrant, the inhibitor and the assistant are compounded, so that the scaling trend of the triazine desulfurizer in an oil and gas well can be slowed down, the dissolution rate of hydrogen sulfide and the mass transfer rate in a solution are increased, and the desulfurization reaction is promoted; the desulfurization effect and the desulfurization rate are improved, and meanwhile, a very good scale inhibition effect is also achieved.

The invention discloses a preparation method of a foamed thermal-insulation ceramic decorative plate in the technical field of building decorative materials. The method comprises the following steps: carrying out ball milling, spray drying, granulating and ageing on raw materials such as ceramic waste and kaolin; mixing and dispersing the aerogel-hydrogel gradient core-shell structure composite modified material and ceramic particles, and sieving to obtain composite powder; compounding sodium bicarbonate and azodicarbonamide with a foaming agent, mixing the foaming agent with the composite powder, and adding a surfactant and a dispersing agent to adjust the viscosity so as to prepare expandable ceramic slurry; the slurry is injected into a mold and coated with low-temperature glaze, and stepped heating sintering is conducted through a tunnel kiln and comprises the steps of preheating glue discharging, primary foaming, secondary sintering, gradient cooling and the like. The thermal insulation performance, the mechanical strength, the weather resistance and the decoration performance are synergistically improved, and the product is low in heat conductivity coefficient, high in compressive strength, excellent in ultraviolet aging resistance, firm in decoration layer combination and suitable for building outer walls and other scenes.

The invention relates to the technical field of cable wires, and discloses a high-flame-retardant cable wire and a preparation method thereof. Comprising the following cable raw materials in parts by weight: 100 parts of ethylene propylene diene monomer, 30-40 parts of low-density polyethylene, 20-35 parts of modified nano magnesium hydroxide, 2-4 parts of an ultraviolet light initiator, 0.5-5 parts of a phosphorus-nitrogen flame-retardant assistant crosslinker, 0.5-1.2 parts of an antioxidant and 1-2 parts of a lubricant. Vulcanizing by a press vulcanizer, carrying out ultraviolet irradiation crosslinking, and extruding into a wire rod by an extruder. After the phosphorus-nitrogen flame-retardant assistant cross-linking agent and the modified nano magnesium hydroxide are cross-linked with the ethylene propylene diene monomer, the polyethylene and the like, a flame-retardant effect is achieved through synergistic cooperation, so that the prepared cable wire has relatively good flame-retardant property and relatively good mechanical property, is low-smoke, halogen-free, safe and environment-friendly, and is suitable for large-scale industrial application.

The invention relates to the technical field of medicines, in particular to an agomelatine pharmaceutical composition as well as a preparation method and application thereof. The agomelatine pharmaceutical composition comprises inner-layer particles, a coating layer and outer-layer auxiliary materials, the inner-layer particles are prepared from the following raw materials: agomelatine, hydroxypropyl methylcellulose, mannitol and colloidal silicon dioxide; the coating layer is obtained by coating a chitosan-sodium carboxymethyl starch suspension on the surfaces of the inner-layer particles; the outer-layer auxiliary material is prepared from the following raw materials: glyceryl behenate, cane sugar, povidone, sodium carboxymethyl starch and magnesium stearate. The agomelatine pharmaceutical composition provided by the invention is stable in dissolution, extremely low in impurity content, controllable in quality and excellent in stability, and can be used for treating depression and related diseases thereof.

The invention belongs to the technical field of laminated photovoltaic cells, particularly provides a wide-band-gap perovskite solar cell and a preparation method thereof, and aims to solve the problems of low open-circuit voltage (VOC), low efficiency and the like of the existing wide-band-gap perovskite solar cell due to the fact that surface defects of a perovskite layer hinder carrier transport. The wide-band-gap perovskite solar cell comprises a transparent conductive glass substrate, a hole transport layer, a perovskite light absorption layer, an interface passivation layer, an electron transport layer and an electrode layer which are sequentially stacked from bottom to top, the perovskite light absorption layer adopts a Cs0.05 (FA0.55MA0.45) 0.95 Pb (I0.55Br0.45) 3 thin film layer, and the interface passivation layer adopts a PDAI layer. According to the perovskite solar cell, the PDAI is adopted as the interface passivation layer, the perovskite light absorption layer is matched and optimized, the PDAI interface passivation layer can effectively passivate the surface defects of the perovskite layer after the PDAI and the perovskite light absorption layer work cooperatively, and therefore the open-circuit voltage and the photoelectric conversion efficiency of the perovskite solar cell are improved.

The invention relates to a preparation method of a composition with soothing and repairing functions. The preparation method comprises the following steps: stirring and mixing aesculus chinensis fruits, feverfew, oat bran, mangnolia officinalis bark and radix stephaniae tetrandrae, drying, crushing and sieving to obtain mixed powder; adding an ethanol aqueous solution into the mixed powder, heating, refluxing, extracting, filtering, collecting an extracting solution, and extracting residues for the second time; combining the two extracting solutions, and concentrating into paste; dissolving the concentrated paste with hot water, adsorbing with modified D101 macroporous adsorption resin, loading the modified D101 macroporous adsorption resin into a chromatographic column, eluting, collecting an ethanol water eluent, concentrating and drying to obtain a plant composition mixed extract; the preparation method comprises the following steps: taking a plant composition mixed extract, adding the plant composition mixed extract into polyhydric alcohol, heating and stirring until the plant composition mixed extract is completely dissolved, adding water in batches, stirring while adding until the solution is clear and transparent, and filtering by using a 0.22 mu m filter membrane to obtain the composition with the soothing and repairing functions.

This application provides a display panel, its manufacturing method, and an electronic device. The manufacturing method includes sequentially fabricating an array of anode layers on one side of a substrate; fabricating a pixel definition layer covering the substrate and the peripheral areas of each anode layer, such that the pixel openings of the pixel definition layer expose the central area of ​​the anode layer; and forming a polymer film on the surface of the pixel definition layer away from the anode layer under first design conditions, where the first design conditions include oxygen. In this application embodiment, the formation of the polymer film requires oxygen consumption, which helps reduce oxygen infiltration, thereby reducing the oxygen concentration on the anode surface, thus reducing the surface voltage of the display panel and improving its lifespan.

The invention belongs to the technical field of medicines, and particularly relates to a solid composition containing ceftizoxime sodium microcapsules as well as a preparation method and application of the solid composition. The invention provides a solid composition containing ceftizoxime sodium microcapsules. The solid composition comprises the ceftizoxime sodium microcapsules, sorbitol, microcrystalline cellulose and povidone, the ceftizoxime sodium micro-capsule comprises a capsule core and a capsule wall material wrapping the capsule core, and the capsule core comprises ceftizoxime sodium. The solid composition containing the ceftizoxime sodium microcapsules provided by the invention is high in ceftizoxime sodium active ingredient content, long in storage period, accurate in dosage and convenient to orally take and use, and can be stably released in an acidic or alkaline environment.

The present application relates to the low temperature curing high-strength benzoxazine type silicone adhesive formula and use method, the formula includes the benzoxazine group containing organic silicon compound and organic alkali compound, the mass ratio of benzoxazine group containing organic silicon compound, organic alkali compound is 100:0.1-20.The adhesive of the present application is based on the cooperation between the benzoxazine group containing organic silicon compound and the basic catalyst, can be cured at low temperature, realize the higher strength bonding.The benzoxazine type silicone adhesive formula provided by the present application can be directly used as adhesive, and the bonding strength is high;It can also be used as a basic formula, used as an adhesive after adding other fillers, to meet the different needs of various special occasions.

The minced fillet is used as a raw material to produce the protein jelly food, and the product is rich in high-quality protein and high in nutritional value. A physical fishy smell removing method and a biological fishy smell removing method are combined, so that the fishy smell of the minced fillet is effectively removed. 50-100 parts of pigskin and 100 parts of minced fillet are jointly gelatinized to form binary protein gel, so that on one hand, the gel strength of the prepared product is improved, and meanwhile, the melting point of the product is improved. Besides, a microwave technology (the microwave power is 0.5-20kW and the treatment time is 60-600s) is adopted to combine a thermally induced gelation process and a sterilization process into one, so that microorganisms are effectively killed while the gelation process is realized. The fishy smell-removed minced fillet-pigskin protein jelly food with high gel strength can be obtained, and the food has a soft and elastic texture, a fine taste and extremely high nutritional value of fish meat, can be stored at normal temperature for a long time, can be directly eaten after being unsealed, and can also be shredded, sliced and seasoned for eating.

The application provides a cold-dissolved liver-protecting medicinal tea and a preparation method and application thereof. The preparation raw materials of the cold-dissolved liver-protecting medicinal tea include green tea, rattan tea, ginseng, lotus leaves, mulberries and hawthorn. The preparation method comprises the steps of grouping extraction and spray drying of the preparation raw materials. The air inlet temperature of the spray drying is 130-150 DEG C, and the air outlet temperature is 75-85 DEG C. The grouping extraction comprises jointly extracting the ginseng, mulberries and hawthorn, and jointly extracting the green tea, rattan tea and lotus leaves in the presence of cyclodextrin. The cyclodextrin comprises one or more of beta-cyclodextrin and hydroxypropyl-beta-cyclodextrin. The cold-dissolved liver-protecting medicinal tea is derived from natural plants, has a simple formula, is safe and effective, is convenient to use, and can retain active ingredients to the greatest extent.

This application discloses a seaweed oligopeptide fertilizer for promoting root growth and seedling development, and its production process, belonging to the field of fertilizer technology. The fertilizer, by weight, comprises: 2-10 parts seaweed oligopeptide complex, 1-8 parts seaweed extract, 10-30 parts compound amino acids, 1-10 parts blueberry pomace, 20-50 parts oxytetracycline waste decomposition products, and 30-60 parts recycled organic matter from kitchen waste. By combining seaweed oligopeptides with chitosan to form a complex, the stability of the active ingredients is improved; simultaneously, the synergistic utilization of oxytetracycline fermentation waste, kitchen waste, and blueberry pomace achieves resource utilization. Experiments show that this fertilizer significantly promotes crop root growth and seedling development.

This application relates to the field of biomedical technology, specifically disclosing a highly liquid-stable SUMO fusion influenza B NP antigen and its preparation method. The antigen is a fusion protein of a SUMO-tagged peptide and an influenza B virus nucleoprotein NP. The SUMO-tagged peptide is directly linked to the N-terminus of the influenza B virus nucleoprotein NP via peptide bonds. The antigen is dissolved in a storage buffer for liquid preservation. The preparation method includes key steps such as fusion gene construction, vector engineering construction, host transformation screening, induced expression culture, and bacterial cell disruption and purification. This antigen can be used for clinical detection of influenza B virus, preparation of quality control materials, and immunogen development. It exhibits excellent liquid preservation stability, maintaining good immunoreactivity even after long-term storage under low-temperature liquid conditions. The preparation method of this application is simple and controllable, requiring no inclusion body refolding step, and can efficiently obtain high-purity and homogeneous soluble fusion antigen.

The jelly food is produced by using the whole fish meat as the raw material, and the product is rich in high-quality protein, EPA, DHA, collagen and mucopolysaccharide, and has extremely high nutritional value of the whole fish meat. Physical fishy smell removal of ginger, garlic and cooking wine is utilized, meanwhile, 5-10 parts of fresh yeast and 5-10 parts of soybean cakes are used for preparing fishy smell removal liquid, biological fishy smell removal is conducted on 100 parts of whole fish meat, and the fishy smell of the fish meat is effectively removed. By adding tea polyphenol, the gel strength and elasticity of the product are improved, and meanwhile, the stability of the product quality is effectively improved. The microwave technology is adopted to combine a thermally induced gelation process and a sterilization process, the microwave power is 0.5-20 kW, the treatment time is 60-600 s, the gelation process is achieved, and microorganisms are effectively killed. According to the invention, the fishy-smell-removed freshwater fish jelly can be obtained, and the leisure food has soft, crisp and tender texture, fine and smooth taste, high protein and low fat, has extremely high nutritional value of whole fish meat, and can be stored for a long time at normal temperature.

The application relates to a multifunctional spherical Prussian blue nanolaser and a preparation method and application thereof, and belongs to the field of nanobiological materials and biological medicine. The nanolaser takes spherical Prussian blue nanoparticles as a main body structure, has good near-infrared photothermal response performance and active oxygen (ROS) removal capacity, and can improve the superoxide dismutase (SOD)-like catalytic activity and antioxidant performance by doping metal elements such as ruthenium, bismuth and manganese. The nanolaser can generate a mild photothermal effect of 38-45 DEG C under near-infrared laser irradiation, and cooperatively remove excessive active oxygen in an inflammatory microenvironment, thereby reducing the expression of inflammatory factors and matrix metalloproteinases, inhibiting the activation of the iezo1 / Piezo2 / MMP13-related inflammatory and matrix degradation pathways, and relieving oxidative stress damage and inflammatory reactions. The nanolaser has the characteristics of uniform particle size, good dispersibility, high stability and excellent biocompatibility, and can be used for the prevention of diseases such as osteoarthritis and rheumatoid arthritis. The application constructs a nanolaser system with mild photothermal regulation and antioxidant activity.

The invention discloses an optimization process for preparing hydrolysis-resistant PET (polyethylene terephthalate) master batch. The optimization process comprises the following steps: S1, pretreating raw materials; s2, low-temperature pre-dispersion: adding the dried raw materials weighed according to the formula proportion into a high-speed mixer, so that the anti-hydrolysis agent and the auxiliary agent are uniformly attached to the surface of the PET base material to form a premix; s3, mild extrusion granulation: melting and mixing the premix through a twin-screw extruder, and extruding the premix into filaments through a die head; s4, the filaments are rapidly cooled and shaped through a cooling water tank, and secondary cross-linking is avoided; s5, pelletizing by adopting a pelletizer to obtain primary master batches; s6, the primary master batch is subjected to vacuum drying, surface moisture is removed, and the anti-hydrolysis PET master batch is obtained.The thermal degradation of a PET base material and the advanced reaction of an anti-hydrolysis agent are reduced, the intrinsic viscosity of the master batch is stable, and the anti-hydrolysis efficiency is improved.

The invention discloses a fish scale collagen skincare composition, a fish scale collagen cosmetic and a preparation method of the fish scale collagen skincare composition and the fish scale collagen cosmetic. The fish scale collagen skincare composition comprises 0.05-0.5 part of fish scale collagen, 0.05-0.5 part of madecassoside and 0.5-3 parts of a purslane extract. According to the invention, the fish scale collagen, madecassoside and purslane extract are combined to repair the skin barrier, calm and relieve nerves, relieve skin inflammatory response and improve sensitive skin in multiple aspects from the aspects of sensitive skin characteristics, possible mechanisms and the like instead of treating head pain and foot pain. The fish scale collagen, madecassoside and purslane extract are derived from fish scales, centella asiatica and purslane of perches respectively, are gifts given to human beings by the nature, are green and healthy, and can endow the perches with high economic value, and through the simple synergistic effect of the three components and the extremely small component addition amount, the basic state of the skin of sensitive skin is consolidated, and the skin care effect is improved. The symptoms of itching, redness and the like after the sensitive skin is stimulated are relieved.

To make it possible to place a particle analysis device in a limited space around a line and to maintain a short route for transporting the samples from the line, the particle analysis device 100 of the present claimed invention is configured so as to comprise a flow cell (C) through which a sample containing particles q12flows, a light source 10 that irradiates light to the particles in the flow cell (C), a photodetector 20 that detects secondary light from the particles, and an arithmetic circuit 30 that calculates an autocorrelation function from a light intensity signal output by the photodetector 20 and analyzes the particles contained in the sample using the autocorrelation function. The particle analysis device 100 is so configured that an optical system unit U1 including the flow cell (C) and the light source 10, and a control unit U2 including the photodetector 20 and the arithmetic circuit 30 are separately provided from each other and are connected through a light guide member L1 that guides the secondary light to the photodetector 20.

The invention relates to the technical field of biological medicine. The invention provides a special gel particle water adjuvant for a PRRS (porcine reproductive and respiratory syndrome) inactivated vaccine as well as a preparation method and application of the special gel particle water adjuvant. The gel particle water adjuvant comprises a conventional water adjuvant and special gel particles. According to the special gel particle water adjuvant for the PRRS inactivated vaccine, the porcine reproductive and respiratory syndrome virus antigen can exist in the form of gel particles at an injection part, degradation is delayed, long-range release is achieved, the existence time of the antigen in tissues is prolonged, the antigen can continuously act on the body, an effective neutralizing antibody is generated, and the immune response of the porcine reproductive and respiratory syndrome virus antigen is improved. The problems that the action time of a conventional PRRS inactivated vaccine and an organism is short, and any antibody cannot be generated are solved, and meanwhile, obvious vaccine adverse reaction is not caused.

This invention discloses a plant growth regulator composition for improving rice quality and resistance to stress, and its preparation method. It relates to the fields of plant growth regulators and agricultural stress-resistant cultivation technology. The plant growth regulator composition is a water-dispersible granule or wettable powder, comprising, by weight percentage: 0.05%-0.30% 5-aminolevulinic acid, 1.0%-5.0% γ-aminobutyric acid, 8.0%-20.0% betaine, 3.0%-10.0% trehalose, 2.0%-8.0% chitosan oligosaccharide, 1.0%-5.0% fucoidan oligosaccharide, and salicylic acid or its agricultural grade. Acceptable components include 0.05%–0.50% salt, 20.0%–45.0% potassium dihydrogen phosphate, 3.0%–15.0% water-dispersible silica, 0.5%–3.0% amino acid chelated zinc, 3.0%–10.0% magnesium sulfate, 0.5%–3.0% wetting and dispersing agent, 1.0%–6.0% binder, with the balance being water-soluble filler. Porous water-dispersible silica is used as a carrier to allow sensitive active substances such as 5-aminolevulinate and salicylic acid to enter the carrier pores and be immobilized in the protective matrix formed by chitosan oligosaccharide and trehalose.

The application relates to the technical field of high polymer materials, and discloses a nylon material and a preparation method and application thereof. The nylon material comprises the following preparation raw materials in percentage by mass: 70-85% of nylon resin, 8-15% of nitrogen-based flame retardant, 2-8% of phosphorus-based flame retardant and 1-8% of synergistic flame retardant. The nylon material provided by the application adds the phosphorus-based flame retardant and the synergistic flame retardant in a traditional nitrogen-based flame retardant system, so that the ignition temperature of the material is increased, the dropping speed and the dropping ignition probability are reduced, and the flame retardant performance of the material is improved. The ignition temperature of the material can reach 745 DEG C, the DSC crystallization temperature can reach 187 DEG C, the demolding effect is good, the dropping speed is slow, the dropping ignition probability is low, the performance requirements of a battery assembly product on the material can be met, and the nylon material can be used in the preparation of electronic connectors, battery compartments, low-voltage switches, housings or terminal blocks of power distribution systems of electronic and electrical equipment.

The present invention provides a Q-switch structure including a solid-state laser medium and a magneto-optical material. The solid-state laser medium and the magneto-optical material are joined and integrated, a first anti-reflecting film for adhesive is formed on a surface of the solid-state laser medium, and a second anti-reflecting film for adhesive is formed on a surface of the magneto-optical material. The first anti-reflecting film for adhesive on the solid-state laser medium and the second anti-reflecting film for adhesive on the magneto-optical material are bonded via a translucent material having a transparency at a laser oscillation wavelength of laser oscillated from the solid-state laser medium. This provides the Q-switch that contributes to the miniaturization of a laser apparatus and has high beam quality.

The invention relates to the technical field of heat stabilizers, in particular to a high-temperature-resistant heat stabilizer and a preparation method thereof. The invention discloses a high-temperature-resistant heat stabilizer which comprises the following raw materials in parts by weight: 16-21 parts of a zinc salt stabilizer; 4-10 parts of a calcium salt stabilizer; 7 to 10 parts of stearoyl benzoyl methane; 8-12 parts of a nitrogen-containing heterocyclic compound; 48 to 60 parts of hydrotalcite; 14 to 20 parts of an antioxidant; and 3-9 parts of a lubricant. Through the synergistic effect of the zinc salt stabilizer and the calcium salt stabilizer and in combination with multiple stabilization mechanisms of the nitrogen-containing heterocyclic compound and hydrotalcite, the thermal stability of PVC in high-temperature processing and use environments is remarkably improved.

The application discloses a solid dispersion of olaparib and a preparation method thereof, and belongs to the technical field of pharmaceutical preparations. The solid dispersion of olaparib adopts polyvinyl alcohol or polyvinyl alcohol and a plasticizer or polyvinyl alcohol and copolymerized povidone or polyvinyl alcohol, copolymerized povidone and an anti-sticking agent as a matrix polymer carrier, can effectively protect the olaparib raw material, reduce the degradation, and improve the drug loading of the solid dispersion. The solid dispersion of olaparib has small hygroscopicity, reduces the requirement of the environment humidity during the storage of the intermediate product of the olaparib preparation, reduces the energy consumption during the preparation process, and significantly improves the stability and effectiveness of the preparation.

The application belongs to the technical field of biological medicine, and more particularly relates to nanoparticles TK-PSBs / CBD@Met, a preparation method therefor and application thereof. The nanoparticles TK-PSBs / CBD@Met are nanoparticles formed by wrapping cannabidiol and metformin with thione-modified lung surfactant biomimetic liposomes. In vitro experiments have confirmed that the nanoparticles TK-PSBs / CBD@Met can effectively inhibit the fibrosis process of BEAS-2B cells induced by silicon dioxide. Animal experiments have shown that the nanoparticles TK-PSBs / CBD@Met can significantly improve the damage to the lung tissue structure and abnormal deposition of collagen caused by SiO2 exposure, and alleviate the pathological progression of silicosis fibrosis.

The application provides a high-activity rhodiola extract freeze-dried powder and a preparation method and application thereof.The high-activity rhodiola extract freeze-dried powder is composed of the following components in parts by weight: rhodiola extract: 10-20 parts; mannose: 78-89 parts; xanthan gum: 1-2 parts; and other pharmaceutically acceptable adjuvants: 0-10 parts. The rhodiola extract, mannose and xanthan gum are compounded in the application, wherein the xanthan gum and the mannose are not only simple supporting agents and protective agents, but also have a synergistic effect with the rhodiola extract, and the activity is improved by 1+1+1>3. Experimental data prove that the anti-inflammatory effect of the high-activity rhodiola extract freeze-dried powder is significantly improved, and the analgesic activity is well maintained.

The application provides a Bi2O2CO3-MIL-68(In) heterojunction composite material and a preparation method and application thereof, and belongs to the technical field of photocatalytic materials, the field of persulfate catalysis and the field of environmental governance. The composite material is obtained by loading Bi2O2CO3 on the surface of MIL-68(In) to form a Z-type heterojunction structure; the Bi2O2CO3 is a spherical body with a diameter of 200-500 nm, and the surface is a stacked granular structure; the MIL-68(In) is a regular hexahedral rhombic rod-shaped structure with a particle size of 5-10 mu m, and the Bi2O2CO3 is dispersedly loaded on the surface of the MIL-68(In). The application has the advantages of simple operation, strong visible light absorption capacity of the heterojunction material, stable photocatalytic performance, high degradation efficiency and the like, and has a potential application prospect in the field of photocatalytic persulfate.