310 results about "Tris hydroxymethylaminomethane" patented technology

The invention discloses flaky silver-coated aluminum powder of a core-shell structure and a preparation method and application of the flaky silver-coated aluminum powder, and particularly relates to the field of electromagnetic shielding materials. Comprising the following steps: carrying out pretreatment of removing an oxidation film on flaky aluminum powder; dispersing the pretreated flaky aluminum powder in a tris (hydroxymethyl) aminomethane hydrochloride aqueous solution, and adding dopamine hydrochloride to carry out polymerization reaction to obtain flaky aluminum powder coated with a polydopamine layer; the flaky aluminum powder coated with the polydopamine layer is subjected to activating treatment through silver nitrate, and activated flaky aluminum powder is obtained; the activated flaky aluminum powder and a silver-ammonia solution are mixed, a reduction solution is added for a silver mirror reaction, flaky silver-coated aluminum powder is obtained, and the structure of the flaky silver-coated aluminum powder is that the surface of the flaky aluminum powder is sequentially coated with a polydopamine layer and a silver shell layer from inside to outside. And the environmental stability and the corrosion resistance of the flaky silver-coated aluminum powder are improved.

The invention discloses self-adhesion-crosslinking double modified bamboo powder, a preparation method and application, and relates to the technical field of composites.The preparation method of the modified bamboo powder comprises the following steps that S1, bamboo powder, 2, 5-dihydroxyterephthalic acid, 4-aminobenzoyl hydrazine, N, N '-diisopropylcarbodiimide and tris (hydroxymethyl) aminomethane are mixed for a reaction; and S2, trimesic acid is added into the solution obtained after the reaction in the S1 for a reaction, filtering, washing and drying are conducted, and the self-adhesion-crosslinking double modified bamboo powder is obtained. The prepared modified bamboo powder is green and environmentally friendly, through a self-adhesion mechanism, a cross-linking mechanism, a branched-chain phenyl heterogeneous nucleation mechanism and the like, the interfacial compatibility of PBAT and the bamboo powder and the crystallinity of PBAT are improved, and therefore the mechanical property of PBAT / bamboo powder is enhanced.

The invention belongs to the technical field of sodium ion negative electrode material preparation, and particularly relates to a double-layer carbon-coated sodium ion battery hard carbon negative electrode material as well as a preparation method and application thereof. The method comprises the following steps: firstly, dispersing activated carbon powder into a tris (hydroxymethyl) aminomethane hydrochloride buffer solution, and then adding dopamine hydrochloride to carry out self-polymerization reaction, so as to obtain activated carbon powder coated with a first layer of polydopamine; then putting the activated carbon powder into a second layer of carbon source precursor solution, and heating in a water bath to obtain double-layer carbon-coated activated carbon powder; and finally, carrying out heat treatment. The preparation method comprises the following steps: firstly, coating the surface of activated carbon with a first layer of polydopamine by an in-situ polymerization method, then promoting uniform coating of a second layer of carbon source precursor by utilizing strong adhesion of the polydopamine, and carrying out heat treatment to obtain the double-layer carbon-coated hard carbon negative electrode material. The hard carbon negative electrode material can improve the energy density of the current sodium ion battery and accelerate the industrial application of the sodium ion battery.

The invention belongs to the technical field of preparation of boron carbide ceramics, and particularly relates to a method for preparing light boron carbide ceramics by taking coconut shells as raw materials, which comprises the following steps of: performing high-temperature carbonization, crushing, grinding and sieving on the coconut shells as the raw materials to obtain carbon powder, fully evaporating and crosslinking a uniform mixture of the carbon powder, boric acid and trihydroxymethyl aminomethane to obtain gel, and drying the gel to obtain the light boron carbide ceramics. According to the preparation method, the gel is converted into precursor powder by using a combustion method, and finally, the porous boron carbide ceramic is obtained through dry pressing molding and high-temperature sintering, so that the two processes of boron carbide powder preparation and pore forming are integrated, the preparation process flow of the light boron carbide ceramic is effectively simplified, and the efficiency is improved.

The invention belongs to the technical field of electrode materials and nuclide recovery, and discloses a W18O49 / graphene / phosphorylation / amidoximation electrode material and preparation and application thereof. The preparation method comprises the following steps: dispersing ammonium tungstate and graphene in a trihydroxymethyl aminomethane solution, and heating and stirring for reaction to obtain a mixed solution; then adding dopamine hydrochloride, ethanol and ammonia water, stirring and reacting, and washing and drying a product to obtain a precursor; and carbonizing the obtained precursor in an inert atmosphere at the temperature of 600-900 DEG C to obtain a W18O49 / graphene material, then dispersing the W18O49 / graphene material in a hydroxylamine hydrochloride solution and / or a phytic acid solution for stirring reaction, and washing and drying the product to obtain the W18O49 / graphene / phosphorylation / amidoximation electrode material. The selective recovery efficiency of the obtained electrode material on uranyl ions can reach 95% or above, and the electrode material has wide application prospects in the field of nuclide uranium recovery.

The invention relates to the technical field of biological detection, and discloses a mycoplasma pneumoniae nucleic acid rapid detection method, which comprises the following steps: mixing a sample to be detected with a multifunctional pretreatment buffer solution containing tris (hydroxymethyl) aminomethane, potassium acetate, polyethylene glycol, saponin, spermine tetrahydrochloride and tris (2-carboxyethyl) phosphine hydrochloride, and carrying out cracking treatment; a cracking mixed solution is obtained; redissolving the enzymatic isothermal amplification basic reagent, the specific primer and the probe to obtain a redissolving amplification system; sucking the supernatant of the cracking mixed solution, adding the supernatant into a redissolving amplification system, and adding a magnesium acetate solution to obtain a reaction mixed solution to be detected; and carrying out isothermal amplification and signal acquisition to obtain a detection conclusion. The multifunctional pretreatment buffer solution is used for cracking the to-be-detected sample, sample liquefaction, cracking and nucleic acid release are completed in a single system, the nucleic acid extraction and purification step of centrifugal column adsorption or magnetic bead elution is avoided, and the operation process is simplified.

The invention discloses a preparation method of Ni / S co-doped hollow carbon spheres for producing H2O2 through efficient electro-catalysis ORR. The preparation method comprises the following specific steps: dispersing polystyrene microspheres, nickel nitrate hexahydrate, thiosemicarbazide and dopamine hydrochloride into a tris (hydroxymethyl) aminomethane buffer solution to obtain a mixed solution; performing centrifugation, washing, drying and drying treatment to obtain precursor powder; and carrying out high-temperature calcination on the precursor under the protection of N2, cooling to room temperature, and carrying out acid leaching, water washing and drying on the product to obtain the Ni / S co-doped hollow carbon spheres. Benefited from the regulation and control effect of doped S on an Ni atom electronic structure and the synergistic effect of a hollow structure with a high specific surface area, the Ni / S co-doped hollow carbon sphere has extremely high H2O2 selectivity and excellent catalytic activity in an alkaline 2e-ORR process, and shows high H2O2 yield and Faraday efficiency in an electrocatalytic H2O2 production test.

The invention relates to a modified polyethylene fiber as well as a preparation method and application thereof, and provides chemical modification treatment on polyethylene fiber by using a silane coupling agent, ethanol, deionized water, nano silicon dioxide, dopamine hydrochloride and trihydroxymethyl aminomethane, so that the hydrophilicity of the fiber and the interface bonding strength of the fiber and a matrix are improved.

The invention relates to the technical field of bioanalytical chemistry, in particular to a method for simultaneously enriching and separating glycopeptides and phosphopeptides by using a bionic hydrophilic adsorbent, which specifically comprises the following steps: step 1, preparing a polyether-ether-ketone (PEEK) framework by using a fused deposition modeling method (FDM); 2, soaking the obtained PEEK framework in an aqueous solution containing dopamine hydrochloride and tris (hydroxymethyl) aminomethane, and carrying out a reaction; step 3, then, adding a mixed solution containing hyaluronic acid methacrylate, vinyl phosphoric acid, N, N-dimethyl bisacrylamide and phenyl-2, 4, 6-trimethylbenzoyl lithium phosphate into the PEEK framework; in the invention, in the aspect of material preparation, a fused deposition modeling method (FDM) is adopted to prepare a polyether-ether-ketone (PEEK) frame, and the material has good mechanical properties and chemical stability and can bear a series of subsequent complex treatment processes without being damaged.

The invention discloses a polydopamine modified metatitanic acid type lithium ion sieve and a preparation method thereof, and belongs to the technical field of lithium ion sieves, the preparation method comprises the following steps: grinding and uniformly mixing lithium acetate dihydrate and titanium dioxide in an organic solvent, and calcining the mixture at 650-800 DEG C for 3-5 hours to prepare a Li2TiO3 precursor; the preparation method comprises the following steps: putting dopamine hydrochloride, aminated crown ether and a Li2TiO3 precursor into a tris (hydroxymethyl) aminomethane solution with the pH value of 8-9, carrying out a constant-temperature oscillation reaction, carrying out suction filtration, and drying at low temperature, so as to obtain the polydopamine modified metatitanic acid type lithium ion sieve. According to the lithium ion sieve, the adsorption effect on lithium ions can be improved, the lithium extraction efficiency is improved, and the problem of low adsorption capacity of a lithium ion sieve in the prior art is solved.

The invention relates to a composite nanofiber membrane and a preparation method and application thereof, and belongs to the technical field of wearable electromagnetic shielding materials. The preparation method comprises the following steps: dissolving polyacrylonitrile in a solvent, and spinning to obtain a polyacrylonitrile nanofiber membrane; then, the polyacrylonitrile nanofiber membrane is soaked in a trihydroxymethyl aminomethane hydrochloride solution containing dopamine; soaking the dopamine-coated fiber membrane in a mixed solution containing a copper salt or a silver salt, and then soaking the dopamine-coated fiber membrane in a reaction solution to obtain a modified nanofiber membrane; then spraying a dispersion liquid containing a conductive filler onto the modified nanofiber membrane to obtain a conductive filler modified nanofiber membrane; and finally, dissolving polyurethane into a solvent, and spinning by taking the conductive filler modified nanofiber membrane as a receiver to obtain the composite nanofiber membrane. The composite nanofiber membrane has excellent electromagnetic shielding performance, directional perspiration ability, air permeability, photothermal conversion ability, antibacterial property, mechanical strength and flexibility.

The invention relates to an anthrax virus protein nanopore buffer solution system and biomolecule detection application, and belongs to the field of nanopore electrochemistry. The invention aims to solve the problem that an anthrax virus protein nanopore is unstable in electrochemical detection, and provides an anthrax virus protein nanopore buffer solution system and application thereof. The buffer solution is composed of trihydroxymethyl aminomethane and a compound I composed of specific cations and anions, the compound I comprises the cations such as NH4 < + >, K < + >, Li < + > and Mg < 2 + > and the anions such as Cl <->, HCOO <-> and SO4 < 2->, and the stability of nanopores is achieved by optimizing the concentration and the pH value. The method is applied to high-sensitivity and high-selectivity detection of different charged small molecules. According to the technical scheme, the stability of the anthrax virus protein nanopore is remarkably improved, the application prospect of the anthrax virus protein nanopore in the field of single molecule detection is widened, and a new thought and method are provided for development of a nanopore sensing technology.

The invention provides a Ti3C2 (at) PDA (at) MMT-Zn composite material, a preparation method thereof and a composite coating. The Ti3C2 (at) PDA (at) MMT-Zn composite material is prepared from the following components in parts by mass: 0.2 part of Ti3C2, 0.2 part of MMT, 0.2 part of a zinc nitrate corrosion inhibitor, 0.2 part of dopamine hydrochloride, 0.5 part of a trihydroxymethyl aminomethane Tris buffer solution, 0.1 part of a pH regulator and 120 parts of deionized water. Wherein the Ti3C2 two-dimensional nano material is obtained by taking Ti3AlC2 as a precursor and an HF aqueous solution as an etching system through mixing and stirring. According to the Ti3C2 (at) PDA (at) MMT-Zn composite material disclosed by the invention, not only can the dispersity and compatibility of the composite material in an epoxy coating be ensured, but also the physical shielding effect of a two-dimensional material and the active self-repairing performance of a corrosion inhibitor can be effectively combined to synergistically improve the corrosion resistance of the coating.

The invention discloses a protein extracting solution and a protein extracting method of polysaccharide and polyphenol plant tissues, and is characterized in that the protein extracting solution comprises the following components in molar ratio: 180-250 parts of trihydroxymethyl aminomethane hydrochloride buffer solution, 200-300 parts of sugar, 45-55 parts of chlorate, 10-70 parts of beta-mercaptoethanol and 0.5-2 parts of protease inhibitor. The browning condition of the total protein solution obtained by the protein extraction formula is obviously weakened, which indicates that the oxidation of polyphenol is obviously inhibited, the release of protein in a tissue sample is facilitated, and the extracted protein effect is better.

The present application relates to a kind of phosphine oxy group covalent modification composite adsorption material and its preparation method and purposes, the preparation method includes the following steps: (1) mixing dopamine hydrochloride, phosphine-containing substrate, tris-hydroxymethyl aminomethane hydrochloride and sodium hydroxide in solvent, to obtain mixed solution;(2) the mixed solution obtained in step (1) and solid phase material are mixed, then oscillation reaction is carried out, to obtain solid-liquid mixture;(3) the solid-liquid mixture obtained in step (2) is carried out solid-liquid separation, and the solid phase part obtained is sequentially washed and dried, to obtain phosphine oxy group covalent modification composite adsorption material.The phosphine oxy group covalent modification composite adsorption material provided by the present application has excellent adsorption selectivity and material stability, and can be used for the high-selectivity separation and recovery of rare metals indium and gallium.

The invention discloses a sizing agent for a bulletproof material as well as a preparation method and application of the sizing agent, and belongs to the field of functional materials. The sizing agent for the bulletproof material comprises the following components: an adhesive, dopamine hydrochloride and tris (hydroxymethyl) aminomethane hydrochloride, wherein the mass ratio of the adhesive to the dopamine hydrochloride to the tris (hydroxymethyl) aminomethane hydrochloride is (99.36 to 99.68) to (0.2 to 0.4) to (0.12 to 0.24). The sizing agent can be used for UHMWPE fibers and further used for bulletproof materials. The sizing agent prepared by the invention can be used for a waterborne polyurethane adhesive; and the preparation process is simple and suitable for industrial use.

The invention provides a three-dimensional porous silicon and carbon nanosphere structure material with lithium nitrate as a template and a lithium supplement agent, a preparation method of the three-dimensional porous silicon and carbon nanosphere structure material, a lithium ion battery negative electrode and a battery. Compared with the prior art, ethanol, deionized water, ammonia water and tetraethyl silicate are used for synthesizing SiO2 spheres, the SiO2 spheres are subjected to thermal reduction through magnesium powder to obtain porous Si, and the porous Si and carbon nanosphere structure material is used for preparing the lithium ion battery negative electrode. Dispersing the porous Si nanospheres and tris (hydroxymethyl) aminomethane in water; and adjusting the pH value by using a hydrochloric acid solution, continuously adding dopamine hydrochloride, finally adding lithium nitrate, calcining, washing and drying to obtain the Si-C composite material with the three-dimensional porous structure. A porous structure is further formed on the surface of the carbon layer by a template method, so that the composite material can provide more active sites in the charge-discharge process, and the porous structure effectively relieves the problem of volume expansion; and meanwhile, the added lithium nitrate also serves as a lithium supplement agent, and the supplemented lithium ions enable the battery to have better stability in the charging and discharging process of the battery.

The invention discloses an anti-pollution ultrafiltration membrane and a preparation method thereof, and relates to the technical field of organic polymer materials. The anti-pollution ultrafiltration membrane is prepared from the following raw materials by weight: 80 parts of hydrophilic modified polyethersulfone, 2-4 parts of coupling agent, 3-5 parts of Al-Nb-Sc-O-Te, 15-25 parts of additive, 5-8 parts of polyethylene glycol diacrylate, 2-4 parts of 3-[N,N-dimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]ammonium]propane-1-sulfonic acid inner salt, and 3-5 parts of 1-allyl-3-vinyl imidazole chloride; the hydrophilic modified polyethersulfone is trishydroxymethylaminomethanesulfonic acid modified polyethersulfone. The anti-pollution ultrafiltration membrane has good anti-pollution performance, sufficient pure water flux, and high BSA retention rate.

The present teachings relate to liquid pharmaceutical formulations of furosemide, where the pharmaceutical formulations include a molar excess of tris(hydroxymethyl)aminomethane to furosemide, have a pH in the range of 7 to 8.5, and a concentration of tris(hydroxymethyl)aminomethane greater than or equal to about 50 mM. The present teachings can improve the stability of liquid pharmaceutical formulations including furosemide and the suitability of such pharmaceutical formulations for subcutaneous administration or delivery.

The invention discloses a reagent for nucleic acid extraction and amplification of porcine epidemic diarrhea virus and application, a nucleic acid rapid extraction technology part is a nucleic acid rapid extraction reagent, and the reagent mainly comprises tris (hydroxymethyl) aminomethane (Tris), TritonX-100 (TritonX-100) and chelating resin 100 (Chelex100). The PEDV on-site rapid detection technology comprises an RT-RAA reaction system and a colloidal gold test strip. The RT-RAA reaction system is composed of an RT-RAA nucleic acid amplification reagent, a pair of primers and a probe, and the primers and the probe are used for identifying an N gene conserved region of PEDV. The kit can complete virus nucleic acid extraction and nucleic acid in-vitro amplification and detection within 30 min, the specificity is good, and the detection sensitivity is 101 copies / microliter. The kit disclosed by the invention has the characteristics of simplicity in operation, rapidness and sensitivity, and is suitable for on-site extraction of a large batch of samples and on-site rapid diagnosis of PEDV (Porcine Epidemic Diarrhea Virus).

The invention discloses a urine microalbumin immunoturbidimetry kit and a detection method, and belongs to the technical field of biology. The invention relates to a urine microalbumin immunoturbidimetry kit, which comprises a reagent R1, a reagent R2, a reagent R3 and a reagent R4, wherein the reagent R1 comprises trihydroxymethyl aminomethane, a coagulant, a blocking agent, sodium chloride, bovine serum albumin, trehalose, a preservative and ultrapure water; the reagent R2 is prepared from hydroxyethyl piperazine ethanesulfonic acid, sodium chloride, bovine serum albumin, glycerol, trehalose, a preservative, a mALB monoclonal antibody and ultrapure water; the mALB monoclonal antibody is prepared by mixing a model number of UDA 9107-1, a model number of UDA 9107-2, a model number of UDA 9107-3 and a model number of UDA 9107-4 according to a mass ratio of (0.8 to 1.2): (0.8 to 1.2): (0.8 to 1.2): (0.8 to 1.2). A mixed antibody of four mALB monoclonal antibodies is specifically combined with a urine microalbumin antigen in a sample to form an antigen-antibody compound, and the antigen-antibody compound has high specificity and high sensitivity; the method has a relatively high detection range, can effectively avoid a hook effect of an ultrahigh-value sample, and can realize rapid and convenient automatic detection.

The invention relates to an anti-aging PVC material, and belongs to the technical field of PVC material preparation, the anti-aging PVC material comprises the following raw materials: polyvinyl chloride resin, hydrotalcite, polyoxyethylene sorbitan monooleate, 4-n-octyl sodium benzenesulfonate, 4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4'-dihydroxy-4, 4 '-dihydroxy-4, 4' The invention relates to a high-temperature-resistant anti-rust paint which is prepared from the following raw materials: 4, 4 '-thiobis (6-tert-butyl-3-methylphenol), 2-hydroxy-4-n-octyloxybenzophenone, trihydroxymethyl aminomethane, dicumyl peroxide and stearic acid. The hydrotalcite, the polyoxyethylene sorbitan monooleate and the sodium 4-n-octylbenzenesulfonate are added into the raw materials, so that the toughness of the finished PVC material is enhanced; by adding 4, 4 '-thiobis (6-tert-butyl-3-methylphenol), 2-hydroxy-4-n-octyloxybenzophenone and trihydroxymethyl aminomethane, the anti-aging performance of the finished product is synergistically improved from multiple angles of oxidation resistance, ultraviolet light conversion and thermal aging resistance.

The invention belongs to the technical field of protein calibration, and particularly relates to an enhanced protein-free confining liquid for protein detection, which comprises the following components: trihydroxymethyl aminomethane, sodium chloride, Tween-20, polyvinyl alcohol, trehalose, EDTA (Ethylene Diamine Tetraacetic Acid) and a polyoxyethylene-polyoxypropylene block copolymer, and sodium chloride and trehalose are matched to provide ions and small molecular compounds to form a stable closed environment. Wherein the trehalose assists in filling and covering small pores of PVDF, the sodium chloride provides ion balance, the EDTA-Na is used for precipitating metal ions, and the Tween-20 assists in repairing the PVDF film. According to the invention, the polyvinyl alcohol and the polyoxyethylene-polyoxypropylene block copolymer are mixed for use, so that non-specific sites on the membrane are blocked while impurity proteins are prevented from being introduced, the sealing effect is achieved, and the problem of false positive or non-specific binding easily caused by the traditional sealing liquid is effectively solved.

The invention provides high-gloss gold-plated and silver-plated steel plate cold rolling lubricating oil and a preparation method thereof.The high-gloss gold-plated and silver-plated steel plate cold rolling lubricating oil is prepared from base oil, modified nanofiller, an extreme pressure agent, an antioxidant and an emulsifier, castor oil phosphate, ricinoleic acid and tris (hydroxymethyl) aminomethane react to obtain a surfactant, the surfactant is used for performing surface activation treatment on layered nano boron nitride and spherical nano aluminum oxide, and the modified nano filler and the extreme pressure agent have a synergistic interaction effect; when the finally obtained rolling lubricating oil is used for rolling a stainless steel plate, after the stainless steel plate is directly annealed without adopting a cleaning and degreasing process, the surface roughness Ra of the obtained stainless steel plate is less than or equal to 0.065 mu m, the glossiness is more than or equal to 500GU, the reflectivity is more than or equal to 90%, the stainless steel plate has excellent high glossiness and mirror surface effect, and the application of the rolling lubricating oil for cold rolling of the steel plate in the field of mirror surface steel is expanded.

The invention discloses a dual-circulation phase-change heat storage material for drilling fluid of a deep high-temperature oil and gas field and a preparation method of the dual-circulation phase-change heat storage material, and belongs to the technical field of petroleum drilling fluid. The preparation method comprises the following steps: (1) mixing and ball-milling expanded graphite and ferroferric oxide nanoparticles, and performing ultrasonic treatment in a solvent to obtain a suspension; and (2) mixing a mixed solution composed of trihydroxymethyl aminomethane and pentaerythritol with the suspension obtained in the step (1), then carrying out ultrasonic treatment and stirring, and finally drying to obtain the product. The preparation method is simple and high in preparation efficiency, and the prepared phase change heat storage material has an adjustable double-peak heat absorption characteristic and high heat conductivity, also has excellent recoverability and real-time monitoring performance, can be applied to cooling of drilling fluid in deep wells and ultra-deep wells, has double-circulation characteristics of heat energy circulation and phase change material circulation, and has wide application prospects. The drilling fluid can stably exist in an underground high-temperature environment, normal development of drilling work is ensured, and the drilling fluid has a wide application prospect.

The invention belongs to the technical field of polymer composite materials, and particularly relates to a preparation method of an aramid fiber / epoxy resin electronic-grade molding compound. The preparation method comprises the following steps: carrying out plasma treatment on aramid fibers, immersing the aramid fibers into a mixed solution of dopamine hydrochloride and a trihydroxymethyl aminomethane hydrochloride buffer solution for oscillation treatment, and then immersing the aramid fibers into an ethanol solution of a silane coupling agent to obtain modified aramid fibers; adding the modified aramid fiber and epoxy resin into a three-roller grinder for grinding and mixing to obtain pre-dispersed aramid fiber; uniformly stirring and mixing aluminum nitride, zinc oxide, epoxy resin and a silane coupling agent to obtain an epoxy resin prepolymer; stirring the pre-dispersed aramid fiber, an epoxy resin prepolymer, a curing agent, an anti-hydrolysis agent and a toughening agent, performing vacuum defoaming, and performing extrusion granulation to obtain the aramid fiber / epoxy resin electronic-grade molding compound. The composite material prepared by the method has the advantages of low moisture absorption, high thermal conductivity and favorable mechanical strength.

This invention discloses a denitrification agent for low-temperature denitrification and its preparation method, belonging to the field of denitrification technology. The denitrification agent is prepared using diatomaceous earth as the matrix framework, compounded with calcium chloride, calcium bicarbonate, chitosan, sodium lignosulfonate, and TRIS (tris(hydroxymethyl)aminomethane). The components synergistically optimize the pore structure. Chitosan and sodium lignosulfonate achieve self-assembly through hydrogen bonding and electrostatic attraction. Nitrogen oxides are removed through a dual action of alkaline absorption and electrostatic adsorption. The TRIS can be regenerated and reused after alkali washing. This invention's denitrification agent solves the problems of high reaction temperature, poor low-temperature activity, low efficiency in removing low-concentration nitrogen oxides, and easy ammonia escape in traditional SCR denitrification technology, and can meet the requirements for NO removal in flue gas from power plants. x ≤15mg / m 3 It has ultra-low emission indicators, and features excellent low-temperature activity, high denitrification efficiency, and recyclability. It is suitable for denitrification treatment of low-temperature flue gas in power plants, etc.

The invention belongs to the technical field of immunobiochemistry, and relates to a rapid membrane transfer solution suitable for western blot experiments, which is prepared by the following steps: adding tris (hydroxymethyl) aminomethane, glycine, ethylenediamine tetraacetic acid and tris (hydroxymethyl) methylglycine into deionized water, stirring, mixing and dissolving at normal temperature, fixing the volume, adding ethanol, and uniformly mixing to obtain the membrane transfer solution. The trihydroxymethyl aminomethane, the glycine, the ethylenediamine tetraacetic acid and the tris (hydroxymethyl) methylglycine are compatible, the prepared film transfer liquid is reliable in film transfer result, clear and stable in developing result and not prone to forming crystals after being used for a long time, film transfer can be completed in a 25-v constant-pressure mode within a short time, the electricity transfer time is remarkably shortened, and the film transfer efficiency is improved. The immunoprotein imprinting efficiency is remarkably improved, little heat is generated in the membrane transferring process, the membrane transferring liquid does not contain volatile solution methanol harmful to the human body, the pH value does not need to be adjusted, and the method has the advantages of being easy and convenient to purchase raw materials, easy to prepare, environmentally friendly and the like.

The invention provides a goat semen cryopreservation solution. The goat semen cryopreservation solution comprises melatonin and one or more of sodium citrate, fructose, yolk, glycerol, penicillin, streptomycin and tris (hydroxymethyl) aminomethane. The cryopreservation liquid is used for preserving goat semen and can improve the pregnancy rate of long-term infertility ewes.

The application discloses a kind of composite super-hydrophobic paper based on alkyl ketene dimer and metal polyphenol network and preparation method thereof, belong to functional paper-based material field.The method is first immersed in 0.25%~5% alkyl ketene dimer emulsion in cellulose paper, is dried at 90~110 DEG C and is cured 48-96h to prepare modified paper;Then, the pH is 8.0-9.0 of tris-hydroxymethyl aminomethane hydrochloride buffer solution, hydrochloric acid dopamine is dissolved in the buffer solution to form dopamine solution, and the concentration is 0.25~20mg / mL of metal ion solution;Finally, the modified paper is immersed in dopamine solution and metal ion solution in turn, and is dried to obtain composite super-hydrophobic paper.The obtained composite super-hydrophobic paper uses cellulose paper-based material as substrate, and hydrophobic layer and metal polyphenol network layer are formed on the surface in turn, the composite paper has super-hydrophobic performance, water barrier performance and photo-thermal response performance, the preparation process is simple, and is suitable for waterproof packaging, self-cleaning surface, anti-icing and deicing and photo-thermal antibacterial and other fields.