393results about How to "Reduced response" patented technology

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 belongs to the technical field of battery positive electrode preparation, and particularly relates to a mixed coating coated nickel-rich layered oxide positive electrode and application thereof. The mixed coating coated nickel-rich layered oxide positive electrode is an NCM system positive electrode material, and the proportion of a Ni material in an NCM ternary system is greater than or equal to 92 wt%; the ratio content of Ni of the nickel-rich layered oxide positive electrode coated with the mixed coating in three elements of Ni, Co and Mn is greater than or equal to 92 mol%; and the nickel-rich layered oxide positive electrode coated with the mixed coating is coated with Li3PO4 and / or Li3BO3 and / or LiNbO3. The positive electrode material provided by the invention can effectively reduce the space charge layer effect and interface side reaction between the positive electrode and the electrolyte, the lithium ion migration efficiency is high, and the cycle performance of the assembled battery is good.

The invention relates to the technical field of two-way sealing butterfly valves, in particular to a condenser cut cylinder two-way sealing butterfly valve which comprises a valve body, a valve rod and a valve plate, a driving cavity is formed in the valve body, the valve rod is sleeved with a transmission piece, two sliding blocks are arranged in the driving cavity, and expansion rings are arranged below the two sliding blocks. A runner is arranged between the expansion ring and the sliding block on the valve body; a first sealing groove is formed in the valve plate, the transmission piece is driven through rotation of the valve rod, and the two sliding blocks are driven to slide through the transmission piece. The sliding block moves to drive fluid in the flow channel to flow, the expansion ring is driven to expand towards the first sealing groove of the valve plate, the expansion ring is tightly attached to the first sealing groove through deformation, and sealing of the valve body is achieved. Compared with the prior art, through the more compact structure and space layout, a sealing mechanism is simplified, and the requirements of an external transmission assembly and a complex adjusting mechanism are reduced, so that the overall size of the valve is effectively reduced, and the problem that side space is occupied is avoided.

A method for depositing a metal compound coating on the surface of a polymer base material at low temperature comprises the following steps: placing the polymer base material in an atomic layer deposition chamber, vacuumizing, and adjusting the temperature and pressure of the chamber; activating the surface of the polymer base material by using plasma; injecting a metal organic precursor into the reaction cavity in a pulse manner at the temperature lower than 300 DEG C, and forming a uniform metal compound coating through plasma enhanced atomic layer deposition; and the redundant precursor is purged through gas, and the steps are repeated until the coating with the target thickness is obtained. According to the method, the surface of the plastic base material is modified under the condition that the temperature is lower than 300 DEG C through a plasma enhanced atomic layer deposition (PEALD) technology, the metal compound coating which is uniform in thickness and controllable in component is obtained, and the requirement for improving the biocompatibility of the surface of the implant in the medical field is met.

The invention provides a method for cyclically regenerating a positive electrode active material by using magnesium sulfate, which comprises the following steps: 1) burdening and mixing waste lithium battery black powder, magnesium sulfate and a carbon source, and roasting the mixture in a vacuum or inert atmosphere to obtain a roasted product; (2) adding the roasted product into water to carry out water leaching treatment, and carrying out suction filtration to obtain a lithium sulfate solution and water leaching residues; 3) adding the lithium sulfate solution into the saturated sodium carbonate solution for lithium precipitation to obtain a lithium carbonate precipitate; (4) drying the water leaching residues, adding dilute sulphuric acid to carry out acid leaching treatment, filtering to obtain acid leaching residues and a magnesium sulfate solution, and then carrying out evaporative crystallization treatment on the magnesium sulfate solution to obtain a magnesium sulfate precipitate; 5) mixing the acid leaching residues with lithium carbonate, and sintering to obtain the regenerated ternary positive electrode active material.According to the method, the recovery rate of obtained lithium reaches 99% or above, loss of important elements in the regeneration process can be avoided, cyclic utilization of magnesium sulfate is achieved, and consumption of chemical reagents and secondary pollution are reduced.

The invention relates to the field of food and health care products, and discloses a composition for dispelling effects of alcohol and protecting liver, which comprises 20-100 parts of ampelopsis grossedentata leaf extract; 50 to 200 parts of a radix puerariae extract; 10-50 parts of a semen hoveniae extract; 10-50 parts of a turmeric extract; 10 to 100 parts of a yeast extract; 5-50 parts of a licorice extract; and 5 to 20 parts of pyrroloquinoline quinone disodium salt. The ampelopsis grossedentata leaf extract, the kudzuvine root extract and the hovenia dulcis thunb extract are utilized, alcohol decomposition is promoted, the blood ethanol concentration is reduced, and drunkenness symptoms are relieved. Puerarin improves activity of liver metabolic enzymes, accelerates discharge of ethanol and acetaldehyde, and reduces liver damage. The anti-oxidation effects of dihydromyricetin and PQQ can eliminate alcohol metabolism free radicals and protect liver cells. The components such as puerarin, hovenia dulcis thunb, curcumin and glycyrrhizic acid jointly promote liver cell regeneration, inflammation and oxidative damage are reduced, the levels of ALT and AST in serum are reduced, and liver health is maintained.

The invention discloses a high-temperature-resistant ethylene-tetrafluoroethylene copolymer as well as a preparation method and application thereof. The copolymer comprises the following raw materials: 10-30 parts of ethylene; 60 to 80 parts of tetrafluoroethylene; and 6 to 30 parts of 4-(trifluoromethyl) styrene. The preparation method comprises the following steps: adding a perfluorocarbon solvent and 4-(trifluoromethyl) styrene into a reaction kettle, stirring, and keeping the temperature at 30-50 DEG C; and adding a mixed gas of ethylene and tetrafluoroethylene and a perfluorobutyryl peroxide compound in a molar ratio of 1: 1 into the system to initiate a polymerization reaction under the reaction pressure of 1-4MPa for 15-30 minutes. The application comprises the following steps: adding the prepared high-temperature-resistant ethylene-tetrafluoroethylene copolymer into an extruder; extruding at the temperature of 260-300 DEG C to coat the outer surface of the electric wire or the cable; and carrying out annealing treatment on the wire or the cable coated with the high-temperature-resistant ethylene-tetrafluoroethylene copolymer at the annealing temperature of 120-180 DEG C for 12-24 hours. The preparation method of the high-temperature-resistant ethylene-tetrafluoroethylene copolymer is simple, low in cost and convenient for large-scale production and application.

The invention relates to the technical field of polymer electrolyte, in particular to a perfluoropolyether-terminated single-ion polymer, a preparation method and application thereof, and a battery comprising the single-ion polymer. A scheme for synthesizing a brand new polymer is adopted, a perfluoropolyether-terminated single-ion polymer is provided, the key point is focused on PEO-based electrolyte window voltage, lithium ion transference number and inhibition of PEO-based electrolyte lithium metal battery negative electrode dendritic crystal growth, the polymer is blended with PEO through the design of the polymer, and the PEO-based electrolyte lithium metal battery negative electrode dendritic crystal growth is inhibited. Therefore, the performance of the PEO-based lithium metal battery is improved.

The invention provides a culture method for improving immunity of fishes. The culture method comprises the following steps: S1, selection of culture points; S2, specification and layout of net cages; S3, selection and throwing of fish fries; according to the fry disinfection method disclosed by the invention, the fry are soaked and disinfected by using a compound disinfectant prepared from povidone iodine, polysorbate, citric acid and vitamin C in a specific proportion, so that pathogenic microorganisms on the surfaces and gill parts of fish bodies are effectively killed. According to the breeding management, the immunity of the fish body is comprehensively enhanced by feeding the fish with an immune conditioner composed of campesterol palmitate, immunomodulatory peptide, beta-glucan and astaxanthin in a specific proportion. According to the bottom mud management, the content of harmful substances is reduced by putting a bottom mud modifier composed of sodium molybdate, nitrifying bacteria, photosynthetic bacteria, tetrandrine and sodium alginate in a specific proportion, growth of pathogenic bacteria is inhibited, nutrient substance circulation is promoted, the water quality environment is optimized, and healthy growth of fry is promoted.

The invention discloses a gene engineering exosome and a slow release method and application thereof, the gene engineering exosome is derived from human adipose-derived stem cells, si-tgfbr2 is loaded in the gene engineering exosome, the si-tgfbr2 is specific siRNA aiming at a Tgfbr2 gene, and the gene engineering exosome can regulate and control proliferation of VSMCs, inhibit transformation of the VSMCs from a contraction phenotype to a synthetic phenotype when the VSMCs are stimulated, and inhibit the growth of the VSMCs. According to the present invention, the gene engineering exosome can be used to maintain the normal structure and the function of the blood vessel, and the sustained release effect of the content in the gene engineering exosome can be achieved by wrapping the gene engineering exosome in the PHA biodegradable material, such that the local treatment concentration can be easily stabilized, the drug administration frequency can be easily reduced, the lasting time of the treatment effect can be easily prolonged, and the treatment gene can be effectively delivered to the target cell; the treatment effect is improved; when being used for modifying a small-caliber artificial blood vessel, the small-caliber artificial blood vessel can be improved in biocompatibility and functionality, and can be prevented from being implanted into the blood vessel for remodeling unbenign hyperplasia stenosis; the invention not only provides a new thought and method for the treatment of vascular diseases, but also has important clinical application value and popularization prospect.

The invention belongs to the field of battery materials, and particularly relates to a LiAlO2 coated lithium-rich manganese-based material as well as a preparation method and application thereof. The invention provides a preparation method of a LiAlO2 coated lithium-rich manganese-based material, which comprises the following steps: (1) mixing a precursor and a first lithium salt, and carrying out first sintering to obtain a first sintered material; (2) carrying out acid pickling on the first sintering material, mixing the first sintering material with an aluminum source and a second lithium salt, and carrying out second sintering to obtain a LiAlO2 coated lithium-rich manganese-based material; and carrying out acid pickling by adopting an organic acid solution. The LiAlO2 coated lithium-rich manganese-based material prepared by the preparation method disclosed by the invention is low in specific surface area, high in first efficiency and good in cycle performance.

The invention discloses a hydrogenation catalyst for preparing tetrahydrocurcumin as well as a preparation method and application of the hydrogenation catalyst. The catalyst contains an active component Pd and a carrier modified aluminum oxide. The invention also provides a method for continuously preparing tetrahydrocurcumin by using the hydrogenation catalyst, which comprises the following steps: carrying out hydrogenation reaction on a curcumin solution with a certain concentration and hydrogen in a fixed bed reactor under certain reaction conditions under the action of the catalyst to prepare a tetrahydrocurcumin hydrogenation solution; and desolventizing and recrystallizing the hydrogenation liquid to obtain the finished product tetrahydrocurcumin. According to the method provided by the invention, the hydrogenation catalyst has higher activity, and when the curcumin is hydrogenated to prepare tetrahydrocurcumin, the raw material conversion rate can reach 100%, and the product selectivity can reach 99% or above.

The invention discloses a sodium ion battery positive electrode material with high cycle performance and a preparation method of the sodium ion battery positive electrode material. According to the sodium ion battery positive electrode material, magnesium, titanium, nickel and aluminum are doped in a layered transition metal oxide matrix, so that the electrochemical performance of the material can be optimized; wherein the doping of magnesium and titanium improves the structural stability and thermal stability of the material, the introduction of nickel enhances the conductivity, the doping of aluminum reduces the volume change of the material, and the rate capability and cycling stability of the material are effectively improved; meanwhile, corrosion and side reaction of electrolyte are further reduced through surface coating of the conductive polymer, the service life of the battery is remarkably prolonged, the cycle performance of the battery is remarkably improved, and particularly, a good capacity retention rate can be kept under the high-rate charge-discharge condition.

The invention is suitable for the technical field of skin dressings, and provides preparation and application of a polyphenol nano-liposome loaded i-PRF skin dressing, the skin dressing comprises oxidized sodium alginate, carboxymethyl chitosan, freeze-dried concentrated growth factors and oleuropein nano-liposomes, the concentration of the oxidized sodium alginate is 0.2-0.5 g / ml, the concentration of the carboxymethyl chitosan is 0.2-0.5 g / ml, the concentration of the freeze-dried concentrated growth factors is 0.2-0.5 g / ml, and the concentration of the oleuropein nano-liposomes is 0.2-0.5 g / ml. The concentration of the carboxymethyl chitosan is 0.2 to 0.5 g / ml, the concentration of the freeze-dried concentrated growth factor is 0.05 to 0.1 g / ml, and the concentration of the oleuropein nano-liposome is 0.125 to 1 ml / g. According to the skin dressing, the biocompatibility of the hydrogel is effectively improved, the sustained drug sustained release characteristic is shown, and the skin dressing has outstanding performance in the aspect of promoting wound healing.

The invention relates to the technical field of dental repair materials, in particular to a nano zirconia ceramic material for dental repair and a preparation method thereof. The preparation method comprises the following steps: S1, preparing nano zirconium oxide powder; s2, preparing composite spherical powder; s3, preparing a green body; and S4, high-temperature sintering: unpacking the hot-pressed green body, and performing high-temperature sintering to obtain the nano zirconia ceramic material for dental restoration. According to the present invention, the mechanical property, the biocompatibility, the antibacterial property, the aesthetic property and the like of the prepared nano-zirconia ceramic material for dental restoration are comprehensively improved through a variety of modification means and optimization processes, and the prepared nano-zirconia ceramic material becomes the ideal dental restoration material.

The invention belongs to the technical field of electrochemical engineering, and relates to a three-dimensional electrochemical reactor which comprises a reactor shell assembly, three-dimensional electrode modules, counter electrode modules, diaphragms or polymer partition plates and an external power supply, the counter electrode modules are arranged in pairs, and the three-dimensional electrode modules are clamped between the counter electrode modules arranged in pairs; the diaphragm or the polymer partition plate is clamped between the electrode surface of the counter electrode module and the electrode surface of the three-dimensional electrode module, and the three-dimensional electrode module, the counter electrode module and the diaphragm or the polymer partition plate are arranged in an inner cavity of the reactor shell assembly; according to the invention, the fluid can flow through the interior and surface of the three-dimensional electrode, and a main electrochemical reaction field is transferred to the interior and surface of the three-dimensional electrode, so that the sufficient flow and mixing of the fluid between the electrodes are ensured while the electrode spacing is shortened as far as possible, the solution resistance is reduced, the cell voltage is reduced, and the current efficiency is improved; and energy consumption increase and equipment damage caused by overhigh voltage are avoided.

The invention relates to the technical field of bio-based polyester synthesis, in particular to a preparation method of poly (ethylene 2, 5-furandicarboxylate). Comprising the following steps: purification of 2, 5-furandicarboxylic acid: purifying the 2, 5-furandicarboxylic acid by sequentially adopting activated carbon, dealdehyding resin and a modified adsorbent, so that the content of acyl furoic acid, furoic acid and aldehyde impurities can be effectively reduced, side reactions are reduced, and the chroma of a finished product is reduced. Adding the purified 2, 5-furandicarboxylic acid, ethylene glycol, a composite catalyst and a composite stabilizer into a reaction container, and carrying out esterification reaction and polycondensation reaction to obtain 2, 5-furandicarboxylic acid glycol ester; a mixture of aluminum acetylacetonate, antimony triphenyl diacetate and zinc acetate is used as a catalyst of poly (ethylene 2, 5-furandicarboxylate), so that the color of PEF can be effectively improved.

The invention discloses an additive, an electrolyte and a battery. The additive is pyridinium propane sulfonate. The additive provided by the invention can regulate and control the physicochemical properties of the electrolyte. At the interface of the zinc negative electrode and the electrolyte, polar functional groups pyridine and sulfonate ions are adsorbed on the surface of the negative electrode of the battery, so that on one hand, water molecules in the electrolyte can be prevented from being contacted with the zinc electrode, thereby inhibiting hydrogen evolution corrosion and passivation reaction caused by water decomposition; and on the other hand, the diffusion mode of zinc ions on the surface of the electrode can be regulated and controlled, and regular and compact electro-deposition of the zinc ions is induced, so that formation and growth of zinc dendrites are prevented at a relatively large probability. Meanwhile, sulfonate ions can be complexed with zinc ions, water molecules in solvation sheaths are eliminated, and the degree of side reaction is weakened. In conclusion, after the additive is used, the performance of the battery is remarkably improved.

The invention relates to a silk fibroin hard material, a preparation method and application, and the preparation method comprises the following steps: carrying out bubble removal treatment on a solution containing regenerated silk fibroin to obtain a high-purity silk fibroin solution or a silk fibroin / gelatin composite solution; and performing gel treatment on the high-purity silk fibroin solution or the silk fibroin / gelatin composite solution to obtain the silk fibroin hard material. The method has the advantages that the prepared silk fibroin solution has extremely high purity through the steps of fine degumming, washing, dissolving, dialysis and concentration and the treatment of centrifugal bubble removal.

The invention discloses a high-shear dynamic mixing reaction device for preparing flexible particles and a dynamic treatment process, and relates to the technical field of preparation of battery raw materials, and the process is characterized in that a flexible particle material for a battery is prepared in a compact space by adopting a pulsating stress dynamic processing method on the basis of an existing chemical formula. Performance obtained by a material formula and performance obtained by pulsating stress dynamic processing are mutually complemented to form an organic whole, the reaction device comprises a barrel, a feeding port is formed in the top of the barrel, a discharging port is formed in the bottom of the barrel, and a kneading and turning mixing mechanism is arranged, rotation of a stirring shaft is used as driving force of a sliding block, so that the material formula and the pulsating stress dynamic processing are combined, and the material formula and the pulsating stress dynamic processing are combined. The sliding block slides in the fixed sleeve in a reciprocating mode, upward and downward pressure is provided for materials in the barrel, the triangular fins are arranged on the baffles in a matched mode, the tips of the triangular fins can provide better shearing force for material particles rotating moderately, the materials are continuously kneaded and turned over and tend to be round, and carbon coating can be more uniform.

The invention discloses an aviation kerosene production method based on vinasse waste, and belongs to the technical field of kerosene preparation, and the aviation kerosene production method comprises the following steps: pretreatment: screening and cleaning vinasse, removing impurities and water, then crushing the cleaned vinasse into particles, and drying and baking by using drying equipment; pyrolyzing: feeding the pretreated vinasse into a pyrolyzing furnace for pyrolyzing; gas purification: purifying the separated gas to remove sulfides and nitrides in the gas; fischer-Tropsch synthesis reaction: introducing the purified gas into a Fischer-Tropsch synthesis reactor to form hydrocarbon molecules; separating products: separating hydrocarbons in different boiling point ranges; product refining: further processing the separated hydrocarbon products; waste treatment: solid carbon black generated in the pyrolysis process is recycled. The device provided by the invention can reduce the dependence of existing aviation kerosene production on traditional fossil fuel, saves energy, reduces carbon emission, and is beneficial to sustainable development.

The purpose of the present invention is to provide a Bst DNA polymerase that can reduce the effects of interfering substances and reactivity at temperatures lower than the optimum reaction temperature. In addition, the invention aims to provide a reagent composition containing the Bst DNA polymerase, a kit containing the Bst DNA polymerase, and a nucleic acid amplification method using the Bst DNA polymerase. The problem is solved by a Bst DNA polymerase which contains an amino acid sequence represented by SEQ ID NO: 1, or a consensus sequence Asn-X-(Ser / Thr) (X is any amino acid residue other than a proline residue), contains an amino acid sequence having 80% or more identity with the amino acid sequence represented by SEQ ID NO: 1, has 5 '-3' DNA polymerase activity and chain substitution activity, and has a consensus sequence containing an N-binding sugar chain, and the N-binding sugar chain contains more than three mannose residues.

The invention belongs to the technical field of semiconductors, and particularly relates to a polishing composition and a preparation method and application thereof. The polishing composition comprises grinding particles, an oxidizing agent, an organic dispersing agent, an inorganic dispersing agent, a pH buffering agent, a pH adjusting agent and water. Wherein the oxidizing agent comprises permanganate, the organic dispersing agent forms an organic coating layer on the surface of the grinding particles, and the inorganic dispersing agent forms an inorganic coating layer on the surface of the organic coating layer. Through the steric hindrance of the organic dispersing agent and the static stable synergistic effect of the inorganic dispersing agent, the grinding particles obtain a good dispersing effect. Meanwhile, the outer surface of the organic coating layer is coated with the inorganic coating layer, so that oxidative damage of a strong oxidant to organic dispersant molecules of the organic coating layer can be prevented, and the dispersion stability and the polishing stability of the polishing composition are improved. Therefore, the polishing composition containing the grinding particles can continuously obtain low-defect and low-roughness surfaces when processing third-generation semiconductor materials.

The invention discloses an automatic feeding method and system for a biomass gasifier, and relates to the technical field of automatic feeding of gasifiers, and the automatic feeding method comprises the following steps: detecting and screening raw materials by using multiple sensors to detect humidity, metal impurities and sizes, monitoring a temporary storage bin by a material level, and calculating the feeding amount according to parameters of the gasifier; a neural network and a fuzzy algorithm control a motor or frequency to achieve accurate feeding, feeding uniformity is assisted by a special feeder and airflow, crushing and drying are conducted according to experimental proportion adjustment and raw material pretreatment, parameters and hot air flow are controlled, a heat exchanger is recycled through energy, gas is preheated, power is generated, parameters are calculated according to a formula to control emission, and emissions are monitored, regulated and controlled. Adjusting operating parameters according to coefficients when the parameters exceed the standard, performing fault detection and early warning, monitoring component states, and performing early warning, self-diagnosis and notification when the components are abnormal. The feeding precision and stability are improved, the raw material quality and equipment safety are guaranteed, the feeding uniformity is optimized, energy recovery, environmental protection and emission reduction are achieved, the energy conversion efficiency is improved, and the equipment maintenance cost is reduced.

The invention relates to an Iguratimod preparation and a preparation method thereof, and belongs to the technical field of medicament preparation, and the preparation method specifically comprises the following steps: S1, treating a cyclodextrin derivative by using a compound enzyme to obtain enzyme-treated cyclodextrin; then carrying out oxidation crosslinking on the cyclodextrin subjected to enzyme treatment to prepare modified cyclodextrin; s2, mixing an iguratimod raw material medicine with a suspending aid, carrying out micronization treatment, then adding into a dispersion medium, and uniformly stirring to obtain an iguratimod suspension; s3, the modified cyclodextrin obtained in the step S1 and the iguratimod suspension obtained in the step S2 are homogenized and mixed, then freeze drying is conducted, and the iguratimod preparation is obtained. Through unique preparation design and optimization process, the dissolving property of the iguratimod is remarkably improved, the dissolution rate and bioavailability of the medicine are improved, the stability of the preparation and the medication convenience of a patient are ensured, and a more reliable and efficient solution is provided for clinical application of the iguratimod.

The invention relates to the field of sewage treatment, in particular to sewage treatment equipment for a textile mill, which comprises a floating dirt cleaning mechanism arranged on a pretreatment tank and used for scraping floating dirt on the surface of sewage by moving left and right; the cleaning frame is arranged on the inner wall of the treatment pond in a sliding mode and arranged on the grating in a sleeving mode, the floating dirt cleaning mechanism moves left and right to drive the cleaning frame to synchronously move up and down, and the cleaning frame cleans the grating; the coagulant supply mechanism is arranged on the cleaning frame and moves up and down along with the cleaning frame, and the coagulant supply mechanism sprays a coagulant into the sewage in the coagulating basin; the stirring mechanism is arranged in the coagulating basin and is used for stirring the sewage, so that the coagulant and the sewage are mixed for reaction. According to the invention, automatic cleaning of the grating can be completed, and sewage treatment blockage caused by grating blockage is prevented. Besides, the coagulant can be sprayed into water layers with different heights in the sewage, so that the coagulant and the sewage can be fully mixed, the reaction dead zone and short circuit phenomena can be reduced, and the sewage treatment effect is improved.

The invention relates to the technical field of solid-state batteries, in particular to a surface-modified inorganic solid-state electrolyte material and a preparation method and application thereof. The surface modified inorganic solid electrolyte material comprises an inorganic solid electrolyte material and a surface modification layer which discontinuously coats the surface of the inorganic solid electrolyte material, wherein the surface modification layer is a nano oxide with a dielectric property. According to the invention, the solid electrolyte material with high ionic conductivity is used as a matrix, and the nano oxide coating layer with dielectric property is introduced on the surface, so that the diffusion energy barrier of lithium ions is reduced, and the conductivity of the lithium ions in the electrolyte is improved; in addition, the coating layer with relatively strong moisture stability and electrochemical stability also reduces the damage of moisture in the environment to the electrolyte and the reaction between the positive electrode material and the lithium metal negative electrode material and the electrolyte, enhances the stability of the solid-state battery under high voltage, inhibits the generation of lithium dendrites, and remarkably improves the cycling stability of the battery.

The invention belongs to the technical field of gas sensors, and particularly relates to a dimethyl disulfide gas sensor based on a porous Cr2O3 nano material and a preparation method of the dimethyl disulfide gas sensor. The porous Cr2O3 nano material is used as the sensitive material of the dimethyl disulfide gas sensor for the first time, and the resistance-type dimethyl disulfide gas sensor with excellent performance is constructed. The sensor fully utilizes the advantages of high sensitivity, low cost, simple device, easy integration and easy on-site continuous detection of a semiconductor resistance-type sensing material and the characteristics of high response to dimethyl disulfide and excellent selectivity of Cr2O3, and constructs the resistance-type sensor which is sensitive in response to dimethyl disulfide, good in selectivity, low in working temperature, economical and environment-friendly. Meanwhile, a good sensitive material is found for a dimethyl disulfide gas sensor, and a new application field is developed for Cr2O3.

The invention relates to the technical field of biomedicine, and discloses a method for constructing a mouse ovary endometriosis model, which comprises the following steps: identifying endometrial tissues of a same donor mouse and bilateral ovaries of a receptor mouse; constructing an ectopic transplantation model of the receptor mouse, and monitoring the survival states of the receptor mouse in different postoperative stages in real time; the growth condition of the ectopic endometrial tissue on the ovary surface is analyzed, and the tissue structure and pathological change of the ectopic endometrial tissue are recognized; determining a lesion area of the ectopic transplantation model, analyzing pathological characteristics and a formation mechanism of the lesion area, and analyzing a correlation degree between the ectopic transplantation model and human endometriosis; and analyzing the simulation effect of the ectopic transplantation model on human endometriosis, and constructing the ovarian endometriosis model of the receptor mouse based on the modeling effect and the ectopic transplantation model. The model forming rate of the endometriosis model and the accuracy of the research result can be improved.

The invention belongs to the technical field of refractory materials, and discloses an aluminothermic reaction sintered alumina hollow sphere heat-insulating refractory material and a preparation method thereof. The aluminothermic reaction sintered aluminum oxide hollow sphere heat-insulating refractory material comprises the following raw materials in percentage by mass: 20-30% of aluminum oxide hollow spheres with the particle size of 3-5mm, 10-20% of aluminum oxide hollow spheres with the particle size of 1-3mm, 5-15% of aluminum oxide hollow spheres with the particle size of 0.1-1mm, 2-10% of light-burned magnesia, 20-30% of activated aluminum oxide powder, 15-25% of magnesium peroxide powder and 4-7% of metal aluminum powder, a binding agent accounting for 2-4% of the total mass of the raw materials is added. According to the refractory material, aluminum and magnesium peroxide are subjected to aluminothermic reaction and self-reaction sintering, a continuous spinel structure is formed on the surfaces of the matrix and the aluminum oxide hollow spheres, high strength is achieved through sintering at low temperature, and low thermal conductivity and high thermal shock stability are both considered.