24results about How to "Stable pH" patented technology

The invention relates to the technical field of solid waste treatment, in particular to a harmless barium slag compound and a preparation method and application thereof. The preparation method comprises the following steps: grinding barium slag and desulfurized gypsum, mixing with water, and standing and curing to obtain a harmless barium slag compound; the mass ratio of the barium slag to the desulfurized gypsum is limited to be (1-10.1): 1; the mass ratio of the water to the mixture of the barium slag and the desulfurized gypsum is (0.18-0.32): 1; soluble sulfate provided by the desulfurized gypsum is used, free barium ions in the barium slag are fixed through precipitation, barium sulfate is formed, and harmless fixation is achieved. The leaching concentration (horizontal oscillation method) of heavy metal ions in the barium slag is lower than the drinking water standard and the hazardous waste identification standard, and harmless treatment of the barium slag is achieved. The problems of reduction, harmlessness and recycling of industrial solid waste (desulfurized gypsum) and hazardous waste (barium slag) can be solved, and collaborative resource utilization and environmental protection of the solid waste and the hazardous waste are promoted.

The invention belongs to the technical field of composite plant extracts, and discloses a composite plant extract and a preparation method and application thereof.The composite plant extract comprises wheat germ peptide and swertiamarin, and the mass ratio of the wheat germ peptide to the swertiamarin is 1: (0.8-1.2); the types and quantity of amino acids in the wheat germ peptide meet the following conditions: (1) Glu + Lys + Pro + Val + His + Gly is greater than 32%, and (2) Gly + Ala + Val + Ile + Pro + Thr + Lys + His is greater than 62%. The stability of swertiamarin in the active component of the composite plant extract provided by the invention is high. In order to repair and relieve problem skin, the wheat germ peptide and the swertiamarin can increase target expression of different pathways and can also synergistically promote target expression on the same pathway, and the wheat germ peptide and the swertiamarin can also promote mutual expression of targets among the pathways, so that the effect of repairing and relieving the problem skin is achieved. And the soothing and repairing effects on the skin are improved through multi-dimensional synergy.

The invention relates to a two-agent type copper acid etching solution for a liquid crystal panel as well as a preparation method and application of the two-agent type copper acid etching solution. The etching liquid comprises an etching liquid main agent and an etching liquid auxiliary agent, and the etching liquid main agent comprises the following components in parts by weight: 5-20 parts of hydrogen peroxide; 5-15 parts of an acidic material; 3-10 parts of an organic base; 0.01 to 0.1 part of a corrosion inhibitor; 0.01 to 0.08 part of a chelating agent; 0.3-2 parts of a stabilizer; 60 to 80 parts of deionized water; the etching liquid auxiliary agent comprises the following components: 30-45 parts of an acidic material; 30 to 50 parts of organic base; 0.02 to 0.2 part of a corrosion inhibitor; 0.3-2 parts of a stabilizer; and 40 to 60 parts of deionized water. The chelating agent in the etching solution has double effects of corrosion inhibition and chelation, the pH value of the main agent can be adjusted, the etching environment of the etching solution is stabilized, the service cycle of the main agent in the etching process is prolonged, the etching capability of the two-agent type etching solution can be kept consistent after 48 hours, and the pH value and the hydrogen peroxide content are kept stable.

The invention relates to the technical field of water treatment, in particular to a catholyte-through multi-electrode-group parallel electrochemical reactor which comprises a reaction tank and a plurality of groups of electrode assemblies arranged in the reaction tank, the electrode assembly includes an anode; the cathode is annularly arranged outside the anode; the separation net is arranged between the anode and the cathode and is configured to isolate the catholyte from the anolyte; the base and the cover are provided with grooves for mounting the anode, the separation net and the cathode and are respectively mounted at the bottoms and the tops of the anode, the separation net and the cathode; the positive terminal is inserted into the cover and is connected with the anode; the negative terminal is inserted into the cover and is connected with the cathode; the acid extraction opening is formed in the center of the cover and penetrates through the cover to extend into the anode area of the anode; and the external pump is connected with the acid pumping port through a pipeline. The problem of insufficient utilization of hydroxyl in the existing water softening technology is solved, the number of the electrode groups can be flexibly adjusted according to actual requirements, the industrial-scale water treatment requirements are met, and meanwhile, the operation cost is effectively reduced.

The invention discloses a cataract-relieving eye care solution prepared from plant extracts, which is prepared from the following raw materials in parts by weight: 0.025-0.05 part of grape seed extract, 0.125-0.25 part of long-time moxibustion cistanche deserticola extract, 2-4 parts of sodium chloride and 250-500 parts of Shihan spring water, and is prepared by the following steps: weighing the grape seed extract, wine-roasted cistanche deserticola water extract and sodium chloride in proportion; adding into Shihan spring water, and fully dissolving by ultrasonic waves; filtering and degerming by using a degerming membrane, and irradiating for two hours under ultraviolet light; the invention relates to the technical field of eye care solutions, and the eye care solution is mild in use condition and convenient to use, can achieve a good effect of relieving cataract without an operation, and has no toxic or side reaction to a human body due to the fact that functional components are all from natural products.

The present invention discloses an oilfield three-phase separation process and separation system, belonging to the field of oilfield technology. The process includes the following steps: 1. Density difference separation, inputting oilfield produced liquid or oilfield sewage into a three-phase separator, under the action of density difference, oil and natural gas in the oilfield produced liquid or oilfield sewage float up, and water flows downward; 2. Gas flotation, introducing natural gas into the three-phase separator, and the natural gas floats tiny bubbles, oil droplets, and mechanical impurities during the rising process; 3. Gas phase circulation, collecting the natural gas gas phase discharged from the three-phase separator and removing carbon dioxide and hydrogen sulfide, and then using it as the input gas of step 2 for recycling. The present invention does not need to heat the oil well produced liquid or oily sewage in advance, and can be treated at room temperature. Through the invented process, the oil content of the sewage reaches the recharge standard, the pH of the water body is stabilized, and new scale is avoided while descaling, which provides convenience for subsequent water treatment.

The invention discloses supramolecular hydrogel capable of being used as a carrier as well as a synthesis method and application of the supramolecular hydrogel. The drug-loaded supramolecular hydrogel is prepared from the following raw materials: laponite, beta-cyclodextrin modified sodium hyaluronate, (ferrocenyl methyl) trimethyl ammonium bromide and the balance of deionized water. Wherein the hectorite is a substance for forming the network structure of the supramolecular hydrogel serving as the carrier. The supramolecular hydrogel can be used as a macrophage extracellular vesicle carrier for treating burn wounds, has injectable, proper viscosity, porous structure, antibacterial property and the like, is beneficial to wound closure, tissue regeneration, collagen synthesis, cell proliferation and angiogenesis, and is beneficial to tissue regeneration and remodeling.

This invention belongs to the field of saline-alkali land improvement technology, specifically relating to a compound microbial agent and its application in saline-alkali land improvement. This invention prepares a compound microbial agent for improving saline-alkali land using microorganisms such as Chaetomium coccidioides, Bacillus subtilis, Bacillus licheniformis, Bacillus belye, and humic acid. When applied to saline-alkali land improvement, this agent not only significantly improves the soil's physical and chemical properties but also significantly reduces the number of stunted cotton seedlings, increases cotton seed yield, and improves fiber quality.

The present invention relates to a culture medium and a fermentation method for improving the fermentation unit of tylosin, which is a culture medium for producing tylosin by fermenting Streptomyces freundii, comprising a primary seed culture medium, a secondary seed culture medium and a fermentation culture medium, wherein the primary seed culture medium, the secondary seed culture medium and the fermentation culture medium all contain palm oil and petroleum yeast powder, and the fermentation culture medium contains oxygen carriers and n-dodecane. The method adopts a new formula, which can greatly shorten the fermentation cycle by about 18 hours compared with the traditional process, reduce energy consumption and save the production cost of raw materials and auxiliary materials; the use of palm oil and corn starch milk can reduce the total cost by about 25%; the use of petroleum yeast powder and oxygen carriers and n-dodecane in a reasonable ratio in a tylosin fermentation tank can accelerate the production speed on the basis of increasing the palm oil consumption rate, so that the fermentation unit is greatly increased.

The invention relates to the technical field of vegetation restoration, in particular to long-acting matrix particles for vegetation restoration in southwest high-altitude arid regions and a preparation method. The long-acting matrix particles are prepared from the following components in parts by weight: 1000 to 1200 parts of acid modified attapulgite, 200 to 250 parts of polypropylene fiber modified concrete, 30 to 40 parts of plant ash, 2 to 5 parts of fertilizer and 4 to 5 parts of polyacrylamide. The use method of the long-acting matrix particle is simple, and the long-acting matrix particle can achieve the effects of improving soil strength, resisting freezing and thawing and promoting plant growth under the condition of not additionally adding a growth promoting agent.

The utility model discloses an intelligent sugar boiling equipment of automatic proportioning, it includes sugar boiling jar, molasses storage tank, syrup storage tank, soda solution storage tank and a plurality of controllers, the sugar boiling jar is connected with the discharge pump for sending material to the next working procedure or returns the upper portion of sugar boiling jar, the top of sugar boiling jar is connected with the vacuum system, be equipped with pH electrode subassembly in the sugar boiling jar, be equipped with on -line spectrophotometer and on -line sugar hammer degree meter on the pipeline of discharge pump and sugar boiling jar, molasses storage tank and syrup storage tank send material to sugar boiling jar through the pump, soda solution storage tank sends material to sugar boiling jar through circulating pipe through the pump, and through a plurality of controllers according to the data of detection equipment acquisition control molasses storage tank, syrup storage tank, soda solution storage tank and add material to sugar boiling jar. The utility model can realize the automatic proportioning and intelligent sugar boiling in the production process of polycrystalline yellow sugar etc., and can accurately control the process parameter, improve work efficiency.

The invention belongs to the technical field of medical intermediates, and particularly discloses a preparation method of a bifendate intermediate, the intermediate is methyl 3, 4-dihydroxy-5-methoxybenzoate, and the preparation method comprises the following steps: S1, mixing gallic acid with methanol, and heating for reaction to prepare methyl gallate; after the reaction, distilling to remove methanol; s2, adding borax and water into the material obtained in S1, uniformly mixing, and then adding liquid caustic soda to adjust the pH value to 8-9; the preparation method comprises the following steps of: adding dimethyl sulfate and caustic soda liquid into a reaction kettle, dropwise adding dimethyl sulfate and caustic soda liquid at the same time for mixing reaction, adding acid for acidification after the reaction is finished to adjust the pH value to 2-3, adding DMF for extraction, performing rotary evaporation on the obtained organic phase to remove DMF, and further refining to obtain methyl 3, 4-dihydroxy-5-methoxybenzoate. According to the invention, esterification and etherification are integrated into the same reactor, and the yield and purity of the product can be effectively ensured.

This invention provides a rumen methane inhibitor and its application, belonging to the field of ruminant farming. The active ingredients of the rumen methane inhibitor of this invention include: *Lactobacillus reuteri* inoculum, *Lactobacillus gasseri* inoculum, *Lactobacillus casei* inoculum, amylase, phytase, xylanase, cellulase, and β-glucanase. The rumen methane inhibitor can effectively regulate the intestinal microbiota of dairy cows, promote the decomposition of fibrous material in the rumen, optimize the rumen fermentation environment, thereby controlling rumen function, reducing methane production, and improving the productivity of ruminants. The rumen methane inhibitor is safe and environmentally friendly, which is conducive to its application in ruminant farming, agriculture, and other fields, and has good practicality.

The utility model discloses a spray system and exhaust treatment device, including jar body, circulating pool, circulating pump and spray set, the liquid inlet end of circulating pump is connected with circulating pool through pipeline, the liquid outlet of circulating pump is connected spray set through header, still include dosing pump, the liquid inlet end of dosing pump is connected with jar body, the liquid outlet of dosing pump is connected with header through dosing pipe, still be connected with detection tube on the header, be provided with pH detector on the detection tube. Compared with prior art, the new dosing of the utility model is diluted through header, and then is reacted through spray set and exhaust gas, and then is collected by circulating pool, at this moment, the neutralization liquid pH in washing tower pool is monitored by pH detector, so it will not be influenced by dosing transiently, and the single dosing amount of dosing pump can also be optimized, so that the neutralization liquid keeps stable pH, reduces the start-stop frequency of dosing pump, and reduces the risk of leakage at pump related interface.

The present invention specifically relates to a TiN and Ti metal film etching solution and a preparation method thereof. The etching solution mainly comprises an oxidant, a stabilizer, an ammonium salt, an oxygen promoter, a surfactant and acetic acid. The etching solution uses an oxidant to oxidize TiN and Ti to form oxides for etching; the ammonium salt can be used as a corrosion inhibitor to complex with metal ions; an inorganic acid or an organic acid is used as a secondary oxidant to increase the oxidizing property of the oxidant and provide sufficient hydrogen ions, so that the concentration of the oxidant is maintained at a high level, the etching rate is maintained stable, and the use / storage life of the etching solution is extended; the surfactant can reduce the surface tension of the solution and promote the etching uniformity and integrity of TiN and Ti. The etching solution used according to the method of the present invention can ensure that the etching rates of the TiN metal film and the Ti metal film are basically the same (the difference between the etching rates of the two is ≤17 Å / min).

The invention discloses stable acidic silica sol and a preparation method thereof. The silanol-based blocking agent, the pH stabilizer and the ion chelating agent are mixed with the silica sol, so that the stability of an acidic silica sol system is improved, the conductivity of the system is reduced, the pH is stable, the contact opportunity of colloidal particles is reduced, the colloidal stability is greatly improved, and the colloidal particles can be stabilized for more than 30 days at 60 DEG C when the concentration of the silica sol is more than 30%.

The present invention provides a hydrolysis-resistant PC resin composition and a preparation method thereof; the composition comprises the following components in parts by weight: PC resin: 83-93 parts; hydrophobic resin: 4-9 parts; compatibilizer: 3-8 parts; hydrolysis stabilizer: 0.2-2 parts; toughening agent: 0.5-3 parts; antioxidant: 0.1-0.5 parts; the preparation method of the composition comprises the following steps: (1) preparing the components according to the above parts by weight; (2) adding the above weight percentages to a high-speed mixer, mixing them thoroughly, and then placing them in a screw machine for melt extrusion, cooling and granulation to obtain a hydrolysis-resistant PC resin composition. Compared with the prior art, the PC resin composition obtained by the present invention has excellent toughness, heat resistance and rigidity. At the same time, the resin composition has excellent hydrolysis resistance, and the resin composition is simple to prepare, has low material cost and high production efficiency.

This invention discloses a low-serum MDCC-MSB1 (MSB1) suspension culture medium and an inactivated chicken infectious anemia virus (TIV) vaccine. The culture medium comprises amino acids, carbon source, additives, vitamins, inorganic salts, buffer salts, and water, and further contains newborn calf serum (NBCS). Using this medium, low-cost, high-density suspension culture of MSB1 cells can be achieved, significantly improving cell culture stability. After 30 consecutive passages at a 1% volume ratio of NBCS, the viability of MSB1 cells remains above 94%, with uniform cell morphology and a clumping rate of <3%, making it suitable for large-scale bioreactor production. Furthermore, when applied to the preparation of an inactivated chicken infectious anemia virus vaccine, it can comprehensively improve virus propagation efficiency, increasing virus production efficiency by more than 25%, with a virus titer of not less than 1.0 × 10⁻⁶. 8.0 TCID 50 / ml, ensuring stable quality in large-scale production.

The invention discloses a treatment method for efficient photocatalytic degradation of methylene blue in water, which comprises the following steps: preparing a photocatalyst for degrading methylene blue in water, then adding the photocatalyst, PMS, a pH regulator and a pH stabilizer into polluted water containing methylene blue, stirring to achieve adsorption-desorption balance, and then irradiating by a xenon lamp light source to obtain the methylene blue in the polluted water containing methylene blue. According to the present invention, the prepared photocatalyst is synthesized by using the ore solid waste, has the rich pore structure, and can provide more photocatalytic active sites; the removal effect of organic matters in water can be improved, the treatment cost of the organic matters is reduced, and secondary utilization of waste resources is realized; the pH value in the photocatalysis process can be kept stable by utilizing the pH stabilizer, so that methylene blue pollutants can be better removed, the removal rate of methylene blue in water is higher, and the pH stabilizer has a good application prospect.

This invention relates to the field of cosmetic technology, specifically to a salicylic acid supramolecular complex, its preparation method, and its applications. The components include salicylic acid, panthenol, and cyclodextrin; the weight ratio of salicylic acid to panthenol is (20-79):(40-59). The salicylic acid supramolecular complex prepared by this invention improves upon the inherent defect of salicylic acid's poor water solubility due to its lipid solubility. Furthermore, the prepared salicylic acid supramolecular complex maintains good solubility in various complex formulation systems containing commonly used cosmetic solvents such as ethanol and polyols.

The application discloses injectable long-acting collagen and a preparation method and application thereof, and belongs to the technical field of collagen preparation. The application solves the problems of rapid degradation and insufficient mechanical property of collagen after injection into the body, and the problem of inability to have biological safety, good biological activity and injectability. The long-acting collagen is prepared by taking methoxypolyethylene glycol active ester and collagen as raw materials. Amide reaction is caused between the methoxypolyethylene glycol active ester and lysine residues on the collagen, hydrophilic PEG is introduced on the surface of the collagen, a hydration layer is formed, biological enzymes are hindered from contacting the collagen, collagen degradation is delayed, and the single-arm structure of the methoxypolyethylene glycol active ester can avoid product agglomeration and abnormal viscosity caused by excessive cross-linking. The long-acting collagen has a long retention time in the body, has no obvious cytotoxicity, has high biological safety, and maintains cell proliferation, migration and adhesion activity and biological repair functions.

The invention provides a device and a method for removing alkaline cations in a total organic carbon measuring instrument, the device comprises an anode electrode, a cathode electrode, a proton exchange membrane and a cation exchange membrane, the proton exchange membrane and the cation exchange membrane are arranged between the anode electrode and the cathode electrode, the proton exchange membrane is arranged adjacent to the anode electrode, and a first cavity is formed between the proton exchange membrane and the anode electrode; the cation exchange membrane is arranged adjacent to the cathode electrode, and a second cavity is formed between the cation exchange membrane and the cathode electrode; a third cavity is formed between the proton exchange membrane and the cation exchange membrane, the device further comprises a circulating pump allowing fluid to circularly flow through the first cavity and the second cavity, the fluid circularly flows in the first cavity and the second cavity, and feed water is introduced into the third cavity. And the treated feed water is subjected to total organic carbon measurement, so that the measurement result is more accurate.

This invention discloses a reverse osmosis pure water production method and equipment based on the synergistic purification of a two-stage membrane module, relating to the field of wastewater treatment technology. In the water quality monitoring stage after pretreatment, this invention performs preliminary feed water optimization on the desalination process of the reverse osmosis module based on acquired ion migration state data to reduce the scaling rate on the reverse osmosis membrane surface. Then, based on the salinity of the feed water at the inlet corresponding to the first-stage reverse osmosis membrane after the preliminary feed water optimization, pressure-flow rate synergistic control is implemented for the pressure fine desalination process of the first-stage reverse osmosis membrane, while simultaneously adjusting the circulation flow rate. Finally, based on the conductivity at a designated location within the feed water buffer tank of the first-stage reverse osmosis membrane, and combined with the feedback status of the permeate water quality from the second-stage reverse osmosis membrane, the feed water parameters of the reverse osmosis module are adjusted. This achieves refined, adaptive, and synergistic control of the reverse osmosis module, effectively solving the problem of desalination efficiency fluctuations caused by pressure difference changes in the application of two-stage membranes in existing technologies.

The invention provides an excrement sample preservation solution, a preparation method thereof and an excrement sample preservation method, and belongs to the technical field of excrement detection. The invention provides an excrement sample preserving fluid which comprises the following components in concentration: 1 to 4 mol / L of guanidine isothiocyanate, 0.1 to 1 vol% of Tween, 10 to 100 mmol / L of disodium ethylene diamine tetraacetate, 1 to 5 mmol / L of diazolidinyl urea, 1 to 10 mmol / L of dithiothreitol, 1 to 20 mmol / L of sodium chloride, 10 to 50 mmol / L of lauryl sodium sulfate, a tris (hydroxymethyl) aminomethane buffer solution and water, the dosage of the tris (hydroxymethyl) aminomethane buffer solution enables the pH value of the fecal sample preservation solution to be 8. According to the invention, Tween, diazolidinyl urea and dithiothreitol are creatively used, and guanidinium isothiocyanate, disodium ethylene diamine tetraacetate and other components are reasonably proportioned, so that the excrement preservation effect is better, and the method is more suitable for NGS detection.