1517 results about "Magnesium ion" patented technology

Hydrogel comprises hydroxyapatite nanowires and a base material for forming the hydrogel, and further comprises glucose oxidase (GOx), gallic acid, magnesium ions (Mg < 2 + >) and the like, the gallic acid and the Mg < 2 + > form Mg-MOF, and the GOx is loaded on the Mg-MOF, so that the diabetes microenvironment of a bone defect part is locally adjusted, and bone defect repair is facilitated. Through verification, the sustained-release gallic acid of GOx-MOF participates in cascade reaction, GOx is removed to generate H2O2, the benefit is maximized, and the sustained-release gallic acid has good effects of controlling blood glucose, removing ROS, regulating inflammation and promoting osteogenesis and angiogenesis. The research is expected to play a role in microenvironment regulation of diabetes mellitus bone regeneration and minimally invasive treatment of bone defects.

The invention discloses a nanofiltration membrane for extracting lithium from salt lake brine with a high magnesium-lithium ratio and a preparation method of the nanofiltration membrane, and belongs to the technical field of nanofiltration composite membranes. The preparation method of the nanofiltration membrane comprises the following steps: first-time interfacial polymerization treatment, second-time interfacial polymerization treatment and post-treatment. The nanofiltration membrane with a double-layer lithium ion permeation channel is constructed through coupling of secondary interfacial polymerization and a B15C5 modification process, and stable permeation performance of the membrane is guaranteed while high magnesium ion rejection rate and high magnesium-lithium separation factor are realized through synergistic modification of crown ether and secondary interfacial polymerization. The nanofiltration membrane disclosed by the invention shows excellent performance in a real salt lake brine test, and in practical application, the membrane can effectively treat a complex brine system with a high magnesium-lithium ratio; and in a 24-hour continuous test, long-term stability is also shown, and an efficient, stable and feasible solution is provided for lithium extraction of the salt lake brine with the high magnesium-lithium ratio.

The preparation method comprises the following steps: treating sepiolite serving as a raw material with 3-aminopropyltriethoxysilane to prepare aminated sepiolite, ultrasonically blending the aminated sepiolite and a modified filler, then treating with phytic acid to prepare a flame-retardant filler, melting bisphenol A polycarbonate, blending with the flame-retardant filler, and carrying out extrusion molding to obtain the flame-retardant fireproof plastic. When the flame-retardant fireproof plastic is combusted, the flame-retardant filler is subjected to evaporation of hot water molecules to cause structural expansion and form an isolation layer, meanwhile, evaporation of the water molecules can take away heat, released ammonia gas can reduce the content of smoke so as to achieve the flame-retardant effect, and generated inorganic acid and phosphate ester are dehydrated and carbonized, so that the flame-retardant fireproof plastic has a good flame-retardant effect. The carbon layer with large interlayer spacing is formed through cooperation with the isolation layer, an organic silicon structure is contained, Si-C can be formed, then the density of the carbon layer is increased, aluminum oxide and magnesium oxide can be formed after internal aluminum ions and magnesium ions are combusted at high temperature, then the flame retardance of the carbon layer is improved, and the flame-retardant and fireproof effects of the plastic are improved.

The invention discloses an electrochemical descaling process ion concentration dynamic balance control method and system, and relates to the field of water treatment of a circulating cooling water system.The method comprises the steps that a multi-parameter sensor is deployed to collect calcium and magnesium ion concentration, pH, conductivity, flow and other multi-dimensional data in real time, and an electrochemical deposition dynamic model is combined; dynamically evaluating the time sequence change trend of the ion concentration; according to the method, an ion concentration dynamic balance control algorithm is constructed, and the current density adjusting quantity is calculated by synthesizing ion concentration deviation and historical integral deviation, so that the target current density of the electrochemical reactor is adaptively adjusted, and the system is always maintained in a target concentration interval under different inlet water quality and load conditions; precise electrolysis control is achieved by periodically adjusting power output, and the descaling efficiency and energy consumption are effectively balanced. Therefore, the self-adaptive adjustment of the electrochemical descaling process is realized, and the stability and the self-adaptability of the descaling process are remarkably improved.

The invention belongs to the technical field of magnesium battery electrolytes, and discloses a magnesium battery electrolyte containing an insoluble additive and an application of the magnesium battery electrolyte, the insoluble indium additive is added into the magnesium electrolyte, such as In2O3 nano-particles, In2 (SO4) 3 nano-particles and nano In powder, and the insoluble indium additive is added into the magnesium electrolyte. The non-functionalized sites on the nano-particle cores interact with anions in the magnesium electrolyte to generate a synergistic effect, so that the anions in the electrolyte are fixed, the migration number of Mg < 2 + > and the ion utilization rate are increased, and transmission of magnesium ions is accelerated. The magnesium battery suspension electrolyte is simple in preparation process, low in viscosity and good in stability, the internal resistance of the battery is reduced, the performance of the battery is improved, and the cycle life of the battery is prolonged.

The invention relates to a method for preparing a high-concentration calcium chloride solution by using alkaline residues and ammonia distillation waste clear liquid, which comprises the following steps of: reacting a byproduct hydrogen chloride with the alkaline residues and the ammonia distillation waste clear liquid to obtain a calcium chloride solution with a certain concentration, adding calcium oxide to remove magnesium ions in the calcium chloride solution, and evaporating and concentrating by using waste heat of the ammonia distillation waste clear liquid to obtain the high-concentration calcium chloride solution. And finally, acidifying by using a byproduct hydrogen chloride to obtain a raw material for producing calcium chloride dihydrate in a calcium chloride factory. The process is simple and effective, solves the problem that the alkaline residues are easy to block in the prior art, fully utilizes the alkaline residues and the ammonia distillation waste clear liquid generated in the process of preparing alkali by an ammonia-alkali method, recycles waste heat in the ammonia distillation waste clear liquid, and improves the concentration of the calcium chloride liquid, so that the process has good practicability and economic value.

The invention provides a power transmission and transformation project reinforced concrete corrosivity evaluation method and system, and relates to the technical field of civil engineering durability evaluation.The method comprises the steps that temperature data of a project location and the total volume, the water content and the pore volume of reinforced concrete are collected, and a freeze-thaw failure index formula is constructed; the product type is judged according to the measured sulfate concentration, different sulfate erosion index formulas are constructed in combination with related data, and the magnesium ion concentration is independently considered in the marine environment; constructing a chlorine salt erosion index formula according to the chloride ion concentration; extracting data from the research report to construct a carbonization erosion index formula; and giving a weight to each erosion type to establish a comprehensive corrosivity evaluation index formula, and judging the erosion degree according to a result. By means of the method, various erosion factors can be comprehensively considered, the erosion degree can be effectively judged according to the evaluation result, and a key basis and scientific guidance are provided for durability guarantee, protective measure making and maintenance decision making of the reinforced concrete structure of the power transmission and transformation project.

The invention provides a natural graphite composite negative electrode material and a preparation method thereof, and a lithium ion battery, the natural graphite composite negative electrode material comprises natural graphite, a fluffy net-shaped three-dimensional carbon network coated outside the natural graphite, and an amorphous carbon coating layer arranged outside the fluffy net-shaped three-dimensional carbon network; wherein magnesium ions and / or aluminum ions are dispersed in the fluffy three-dimensional carbon network, and copper particles and / or silver particles are doped in the amorphous carbon coating layer. The natural graphite composite negative electrode material provided by the invention has a three-dimensional conductive network, is doped with metal, and has good conductivity and excellent electrochemical cycle performance.

The invention provides a composition for promoting hair regeneration after chemotherapy as well as a preparation method and application thereof, and belongs to the technical field of medicines. The preparation method comprises the following steps: modifying the surface of a gold nanocage with polydopamine, loading the modified gold nanocage on an exosome, complexing magnesium ions and zinc ions to prepare a modified exosome, preparing a nano drug-loaded liposome from curcumin, resveratrol and epigallocatechin gallate, mixing the nano drug-loaded liposome with the modified exosome to prepare a multi-layer liposome, and preparing the multi-layer liposome from the nano drug-loaded liposome. And mixing with a penetration enhancer, and adding into a temperature-sensitive hydrogel system to prepare the composition for promoting hair regeneration after chemotherapy. The composition for promoting hair regeneration after chemotherapy has a good transdermal absorption promoting effect, can slowly release drugs, promotes hair follicles to be converted from a resting stage to a growing stage under the synergistic effect of the drugs, regulates and controls multiple pathways (such as anti-apoptosis, angiogenesis promotion and anti-inflammation) at the same time, is matched with a complex pathological mechanism of hair regeneration after chemotherapy, and can promote hair regeneration after chemotherapy. Wide application prospects are realized.

The invention discloses a rechargeable magnesium battery composite electrolyte and a preparation method and application thereof, the electrolyte comprises an organic ether solvent, an electrolyte magnesium salt and an additive, and the additive is one or two of a sulfimide additive or a phosphate additive. By introducing the sulfimide additive into the organic ether solvent electrolyte containing the electrolyte magnesium salt, the kinetic performance of the electrolyte is remarkably improved under the mutual synergistic effect of all the components, the solvation structure of electrolyte magnesium ions is effectively regulated and controlled, the dissolution of the electrolyte magnesium salt is accelerated, the conductivity of the magnesium ions is improved, and the service life of the electrolyte is prolonged. Reversible electrochemical circulation of the magnesium symmetric battery under high current density is realized, the cycle life of the battery is prolonged, a phosphate ester additive is continuously introduced, a phosphorus-rich magnesium ion conductive interface film is formed on the surface of magnesium metal, the transmission capacity of Mg < 2 + > is enhanced, the overpotential and potential barrier of magnesium negative electrode dissolution / deposition are reduced, and the performance of the battery is improved. Therefore, the electrochemical reversibility and coulombic efficiency of the asymmetric battery are improved.

The invention relates to the technical field of metal amino acid chelate preparation, and discloses high-bioavailability magnesium glycinate and a preparation method thereof.The method comprises the steps that a glycine solution and a magnesium salt solution are mixed, the initial pH value is adjusted to be within the alkaline range, and a low-polarity organic phase is added to construct a two-phase solvent system; dynamically adjusting the pH value of the reaction system by stages, and sequentially inducing amino and carboxyl of glycine to chelate magnesium ions step by step to form a chelate; and blending the chelated product with a chitosan-sodium alginate composite carrier, and carrying out spray drying to obtain magnesium glycinate particles. The molar ratio of magnesium ions to glycine in the chelating structure of magnesium glycinate is 1: 3. Through the synergistic effect of dynamic pH regulation and a two-phase solvent system, directional synthesis of the magnesium glycinate 1: 3 high-coordination chelate is achieved, the bioavailability and the targeted slow release performance are remarkably improved by combining a composite carrier nano embedding technology, and meanwhile, the process is efficient and environmentally friendly.

The invention provides composite anionic cellulose ether as well as a preparation method and application thereof. The composite anionic cellulose ether is prepared by etherifying alkalized cellulose through an etherifying agent A and an etherifying agent B in sequence, the etherifying agent A is selected from water-soluble halogenated alkyl sulfonic acid and / or water-soluble halogenated alkyl sulfonate; the etherifying agent B is selected from water-soluble halogenated alkyl carboxylic acid and / or water-soluble halogenated alkyl carboxylate. According to the composite anionic cellulose ether, a sulfonic acid group and a carboxylic acid group are sequentially introduced, so that the composite anionic cellulose ether has relatively high temperature resistance and salt and calcium resistance; the compound can be used as a filtrate reducer for the drilling fluid, can effectively control the filter loss of the drilling fluid, and can improve the salt pollution resistance of the drilling fluid, especially the calcium and magnesium ion pollution resistance.

The invention discloses a preparation method of a three-dimensional porous white phosphorus calcium stone ceramic bracket with piezoelectric biological activity, and belongs to the field of brackets. The preparation method of the scaffold comprises the following steps: uniformly dipping a polymer foam template with a certain pore size and porosity in slurry composed of beta-tricalcium phosphate and a binder, carrying out high-temperature sintering to remove organic matters, carrying out a hydrothermal reaction on the inorganic scaffold in an aqueous solution containing magnesium ions, converting beta-tricalcium phosphate into white calcomanite, and carrying out drying to obtain the scaffold. And then carrying out high-temperature annealing treatment to obtain the white calcomanite porous ceramic bracket with piezoelectric biological activity. The prepared ceramic scaffold is controllable in composition and degradation rate, excellent in mechanical property, electroactive, free of cytotoxicity and remarkable in osteogenesis induction effect, and the porosity and aperture of the scaffold are suitable for cells to enter and grow. The preparation method of the white phosphorite three-dimensional piezoelectric ceramic bracket is simple and easy to implement, controllable in process and easy to amplify.

The present invention provides a system and method for extracting lithium from salt lake brine and preparing battery-grade lithium carbonate. The system includes a coagulation and precipitation system, a filtration system, an adsorption and desorption system, a calcium and magnesium removal system, a boron removal system, a concentration system, an evaporation system, and a lithium precipitation system connected in sequence. The calcium and magnesium removal system includes a first-stage reverse osmosis concentration unit, a first-stage nanofiltration calcium and magnesium removal unit, a second-stage reverse osmosis concentration unit, a multi-stage nanofiltration calcium and magnesium removal unit, and a calcium and magnesium ion exchange unit connected in sequence. The boron removal system includes a first-stage nanofiltration boron removal unit, a multi-stage nanofiltration boron removal unit, and a boron ion exchange unit connected in sequence. After the lithium precipitation system, there are also a precision filtration system and a water washing and drying system connected in sequence. By adopting the process of the present invention, the lithium recovery rate is improved, and the product is battery-grade lithium carbonate, greatly improving the resource utilization and recovery rate of the lithium extraction system, reducing the amount of externally added water and the consumption of sodium carbonate in the process of the lithium precipitation system.

The utility model relates to a waste incineration fly ash washing wastewater treatment system, which comprises a raw water tank for collecting fly ash washing wastewater; the heavy metal removal reaction tank is used for removing heavy metals from the wastewater to obtain a mud-water mixture, and carrying out solid-liquid separation on the mud-water mixture to generate heavy-removed water; the hardness removal reaction tank is used for removing calcium and magnesium ions from the heavy water to obtain a mud-water mixture II and carrying out solid-liquid separation to generate softened water and calcium carbonate sludge; the pH adjusting barrel is used for adjusting the pH of the softened water to generate reclaimed water; the COD removal system is used for removing COD in the reclaimed water; the multi-medium filter is used for filtering the COD-removed water to obtain filtered water; the ultrafiltration equipment is used for filtering the filtered water to obtain ultrafiltration permeate liquid; the nanofiltration equipment is used for carrying out nanofiltration on the ultrafiltration permeate liquid, and chlorine salt enters separation membrane permeate liquid; and the evaporative crystallization equipment is used for evaporating and concentrating the separation membrane permeate to generate sodium chloride and potassium chloride. The device disclosed by the utility model can efficiently remove COD (Chemical Oxygen Demand) and heavy metals, reduce calcium ions in washing wastewater and ensure the quality of subsequent evaporative crystallization products.

The invention discloses a bone repair material based on pH controlled release and a preparation method thereof. The bone repair material comprises the following raw materials: polycaprolactone, nano hydroxyapatite and nano magnesium oxide. The composite bone repair scaffold has the beneficial effects that the composite bone repair scaffold with excellent biocompatibility, excellent osteogenesis performance, excellent degradation performance and pH controlled release of magnesium ions is prepared by printing the bone repair material through a 3D printing technology, a temporary three-dimensional structure can be provided for cells, cell adhesion, proliferation and differentiation are promoted, growth factors are released at the same time, and the growth rate of the cells is increased. The formation of new bone tissues is guided; the composite bone repair scaffold can continuously and quantitatively release magnesium ions through pH value control, when osteoarthritis or bone tissue inflammation occurs at a bone defect part due to improper operation and rejection reaction, the magnesium ion release speed of the composite bone repair scaffold is increased, the anti-inflammatory effect is achieved, and the magnesium ions which are continuously released can promote bone tissue repair.

The invention discloses an iron-magnesium modified sepiolite composite material, a preparation method thereof and application of the iron-magnesium modified sepiolite composite material as a phosphorus removal and algae inhibition functional material, and belongs to the technical field of water pollution remediation. The iron-magnesium modified sepiolite composite material is formed by jointly loading magnesium hydroxide and iron hydroxide on sepiolite, has a good removal and purification effect and high selectivity on phosphorus in a phosphorus-polluted water body under the action of physical and chemical synergistic adsorption of inorganic phosphorus, and can achieve a very good phosphorus removal effect in a relatively short time; meanwhile, the growth of algae is inhibited through the synergistic effect of iron ions and magnesium ions, death of algae in polluted water is accelerated, the effect of purifying water is achieved, and the method has the advantages of being low in treatment cost, environmentally friendly, free of secondary pollution and the like.

The invention discloses a water quality total hardness and calcium and magnesium ion content detection method, which comprises: extracting a water quality sample to be detected, and injecting into a cuvette; taking a color developing reagent, injecting the color developing reagent into the cuvette, blowing, stirring and uniformly mixing to obtain a reaction solution; measuring the initial current i0 of the reaction liquid in the cuvette at the wavelength of 475nm and the initial current I0 of the reaction liquid in the cuvette at the wavelength of 640nm; then titrating, and recording a measured current value and a titration volume while titrating; according to the obtained relation curve of the current and the titration volume under the two wavelengths, obtaining the titration volume corresponding to a titration judgment end point, and substituting the titration volume into the calibration curve to obtain the concentration of total hardness or the content of calcium and magnesium ions in the water sample. The measuring method disclosed by the invention not only has extremely high accuracy and precision, but also can be applied to measurement of total hardness or calcium ions under different indicators at the same time, and the turbidity of a water sample or magnesium hydroxide precipitate generated during calcium ion measurement hardly affects a test result.

The invention relates to a method for preparing hexagonal flaky magnesium hydroxide through a hydration modification one-step method, and belongs to the technical field of inorganic material preparation. Hyperbranched sodium polyacrylate containing phosphonic acid and ammonium phosphonate salt is synthesized and serves as a crystal forming agent for magnesium hydroxide crystal growth, the hyperbranched sodium polyacrylate can coordinate with magnesium ions, uniform growth of all crystal faces of the magnesium hydroxide crystal is promoted, and the magnesium hydroxide crystal growth rate is increased. And the hyperbranched structure can better and moderately wrap the formed magnesium hydroxide crystal, so that the uniform growth property of the crystal face is improved. In addition, ammonium phosphate groups and carboxylate in the crystal forming agent have good wetting dispersity, agglomeration of magnesium hydroxide crystals is weakened, and the particle size distribution uniformity is improved. According to the method, the magnesium oxide powder and the crystal forming agent are ground and then subjected to the hydration reaction, the hexagonal flaky magnesium hydroxide is synthesized through a one-step method, and the prepared magnesium hydroxide is in a regular hexagonal flaky shape, has uniform particle size distribution, and has relatively high purity and relatively low impurity content.

The invention relates to the technical field of mineralized filter elements, particularly provides a magnesium-containing mineralized filter material, a mineralized filter element and a preparation method of the mineralized filter element, and aims at solving the problem that the service life of the magnesium mineralized filter element is shortened due to the fact that the magnesium ion release speed of the existing magnesium mineralized filter element is too high. The magnesium-containing mineralized filter material comprises modified magnesium ore and modified dolomite, wherein the mass ratio of the modified magnesium ore to the modified dolomite is (0.25-6): 1. By controlling the ratio of the modified magnesium ore to the modified dolomite, the precipitation concentration and speed of magnesium ions in water can be controlled, so that the concentration of the magnesium ions in the water can meet user requirements, and the service life of a magnesium mineralization filter element can be prolonged.

The invention provides a nano foam scrubbing agent suitable for environments with various temperatures and mineralization degrees as well as a preparation method and application of the nano foam scrubbing agent. The nano foam scrubbing agent comprises an anionic surfactant, a nonionic surfactant, a zwitterionic surfactant, foam stabilizing particles and a solvent, the total mass concentration of the anionic surfactant, the nonionic surfactant and the zwitterionic surfactant in the nano foam scrubbing agent is 0.1-1.0 wt%, and the mass concentration of the foam stabilizing particles is 0.1-0.5 wt%; the mass ratio of the anionic surfactant to the nonionic surfactant to the zwitterionic surfactant is (10-30): (15-20): (15-25). The foam scrubbing agent disclosed by the invention has relatively good foaming, foam stabilizing and liquid carrying capacities at 35-95 DEG C in a mineralization degree range of 10000-50000 mg / L, has very good salt resistance and calcium and magnesium ion resistance, and can adapt to environments with various temperatures and different mineralization degrees.

The invention discloses a cooling device for a metal casting mold, and relates to the technical field of metal casting. The device comprises a cooling pipe, the cooling pipe is fixedly connected with the outer side face of a mold, the inner side face of a shell is fixedly connected with the outer side face of the mold, the surface of a water drawing assembly is fixedly connected with the top of a groove in the bottom of the mold, and a filtering assembly is fixedly connected to the top of a bottom plate through bolts and arranged in the groove in the bottom of the mold. Cooling water in the cooling pipe always flows, attachment after calcium and magnesium ions are separated out can be effectively reduced, incrustation scale attached to the interior of the cooling pipe due to temperature rise of the cooling water is avoided, the spirally arranged cooling pipe can increase the circulation area of the cooling water in a limited space, the cooling effect is enhanced, and the cooling pipe is of a spiral integrated structure, so that the service life of the cooling pipe is prolonged. Compared with a pipeline formed by connecting a plurality of pipelines, the inner wall is smooth and free of steps, and adhesion of scale can be effectively reduced.

The invention discloses a landfill leachate pretreatment process, and belongs to the technical field of landfill leachate treatment.The landfill leachate pretreatment process comprises the following steps of S1, pre-oxidation and catalytic chain breaking, S2, dual-alkali calcium and magnesium removal, S3, magnetic flocculation and adsorption, S4, dynamic membrane filtration unit treatment and S5, control system integration. The mass transfer efficiency of an oxidizing agent and pollutants is enhanced, the dosing of the agent is dynamically regulated and controlled by combining an ORP (oxidation reduction potential) meter, so that parameters such as potential, pH value and temperature are kept in an optimal interval, the oxidation reaction is ensured to be fully carried out, macromolecular organic matters are efficiently decomposed, and a foundation is laid for subsequent treatment; the collision efficiency of calcium and magnesium ions is improved through the water distributor and the granular sludge bed, and meanwhile, the chemical dosage is dynamically controlled and the pH value is accurately adjusted through the sensor, so that the calcium and magnesium ions are efficiently removed, the chemical waste is reduced, and the operation cost is reduced.

The invention relates to the field of solid waste resource utilization, and discloses an ardealite-based saline-alkali soil conditioner as well as a preparation method and an application method.The conditioner is prepared from the following raw materials in parts by weight: 235-330 parts of ardealite, 40-100 parts of sepiolite, 20-70 parts of lignocellulose, 15-30 parts of epoxy chloropropane and 8-20 parts of urea. According to the scheme, through compounding of sepiolite and ardealite, Ca < 2 + > is dissolved out by hydration of the ardealite to replace Na < + > in soil, the sepiolite achieves the effect of fixing Na < + > in the soil through magnesium ion exchange, and hydration of the ardealite is promoted; furthermore, magnesium ions react with water-soluble phosphorus in the ardealite, so that the obstruction of soluble phosphorus on the dissolution of Ca < 2 + > in the hydration of the ardealite is reduced, the hydration of the ardealite is further promoted, and the improvement and treatment effect of the ardealite on the saline-alkali soil is improved.

The invention discloses a reaction buffer solution for improving endotoxin detection sensitivity of a recombinant tachypleus amebocyte lysate, a kit containing the reaction buffer solution and application of the reaction buffer solution. The reaction buffer solution comprises the following components: a Tris-HCl buffer solution, magnesium ions, sodium chloride, cane sugar, ethylene glycol diethyl ether diamine tetraacetic acid, a nonionic surfactant and cyclodextrin or a derivative thereof. The invention also discloses a preparation method of the reaction buffer solution and a kit containing the reaction buffer solution. When the reaction buffer solution or the kit is used for detecting the endotoxin of the recombinant tachypleus amebocyte lysate, the sensitivity of the recombinant tachypleus amebocyte lysate for detecting the endotoxin can be improved by one order of magnitude, the lowest detection limit can reach 0.0005 EU / ml, the reaction buffer solution or the kit has strong anti-interference capability and short reaction time, and the detection efficiency is greatly improved.

The invention discloses an imidazolium ionic liquid modified magnesium ion battery electrolyte and a preparation method and application thereof. The imidazolium ionic liquid modified magnesium ion battery electrolyte is obtained by fully dissolving [EOE-A-Im] [TFSI] ionic liquid in an APC electrolyte. Wherein [EOE-A-Im] [TFSI] is a 1-allyl-3-(2-ethoxyethyl)-1H-imidazole-3-onium bis (trifluoromethylsulfonyl) imine salt, and APC is a total phenyl complex. The imidazolium ionic liquid modified magnesium ion battery electrolyte disclosed by the invention is relatively wide in electrochemical window, excellent in compatibility with electrodes, high in magnesium deposition-dissolution efficiency, low in overpotential and good in cycling stability; and the preparation method of the imidazolium ionic liquid modified magnesium ion battery electrolyte is simple and environment-friendly, and accords with green industrial production.

The invention discloses an extracellular matrix-imitated anti-inflammatory nerve repair-promoting conductive hydrogel as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The preparation method of the conductive hydrogel comprises the following steps: preparing an MXene nanosheet dispersion liquid, and sequentially adding polyphenol and magnesium ions into the MXene nanosheet dispersion liquid to obtain a modified nanosheet solution; mixing the modified chitosan with polyvinyl alcohol to obtain a solution A; mixing and reacting the modified nanosheet solution with phenylboronic acid modified gelatin to obtain a solution B; mixing the solution A and the solution B for reaction, refrigerating at low temperature, and unfreezing to obtain the conductive hydrogel. The hydrogel prepared by the invention has excellent conductivity, and the obtained conductive hydrogel has the functions of resisting inflammation and promoting nerve repair. The bionics method not only improves the diversity and functionality of biological materials, but also provides new possibility for future tissue engineering and regenerative medicine.

The present invention provides a detection reagent and a detection method for calcium hardness, magnesium hardness and total hardness of water. The detection reagent comprises a liquid color developing component, a liquid buffer component, a first liquid masking agent component and a second liquid masking agent component. The liquid color developing component comprises a color developing agent that can react with both calcium ions and magnesium ions. The liquid buffer component adjusts the pH value of the color developing reaction to be greater than 12. The first liquid masking agent component is used to mask the calcium ions and magnesium ions in the water quality, and the second liquid masking agent component is used to mask the calcium ions in the water quality. The detection reagent can simultaneously measure the calcium hardness, magnesium hardness and total hardness in the water quality. The detection method has high accuracy, good parallelism, convenience and rapidity, and the detection time of the three indicators of calcium hardness, magnesium hardness and total hardness of a single sample is short.

The invention relates to a method for detecting bacterial endotoxin in a melphalan hydrochloride bulk drug, and belongs to the technical field of drug analysis. The invention provides a test solution for detecting bacterial endotoxin in a melphalan hydrochloride raw material medicine, which comprises a test product melphalan hydrochloride raw material medicine, a 2-8 DEG C sulfobutyl beta-cyclodextrin sodium water solution and calcium and / or magnesium ions. The detection method disclosed by the invention is simple to operate, the sample can be dissolved in BET water without reanalysis, and the detection result is accurate; no organic solvent is used for preparing a test solution, so that the safety to operators is good, and bacterial endotoxin interference experiments prove that no interference effect exists; and the detection limit of the bacterial endotoxin in the melphalan hydrochloride bulk drug can reach 0.2 EU / mg.

The invention discloses a laser cleaning method for a magnesium-based foil, and belongs to the technical field of magnesium ion battery manufacturing. According to the laser cleaning method for the magnesium-based foil, the magnesium-based foil is magnesium foil or magnesium alloy foil, and the method comprises the following steps that laser cleaning is conducted on the magnesium-based foil through a laser device, and a laser beam conducts 45-degree cross filling path scanning on the surface of the magnesium-based foil; monitoring a plasma spectral line of laser ablation in real time by using a plasma spectrometer; based on the dynamic change of the magnesium characteristic plasma spectral line intensity, the cleaning parameters of the laser are adjusted; and after cleaning is completed, an oxide layer on the surface of the magnesium-based foil is removed. 45-degree cross filling path scanning is adopted, heat accumulation of a repeated scanning area can be reduced, during 45-degree cross filling, adjacent scanning lines cover in a cross mode, heat distribution is more uniform, heat of the scanning area can be reduced, and therefore the problems of local overheating and negative plate perforation or structural damage caused by too high energy are avoided.