78results about How to "Increase pH" patented technology

The invention discloses a preparation method for a polysiloxanes-amidopolyether block copolymer, comprising the steps of preparation of an intermediate of alpha, omega-hydrosiloxane, preparation of an intermediate of alpha, omega-polysiloxanes diepoxide, and preparation of the polysiloxanes-amidopolyether block copolymer. The polysiloxanes-amidopolyether block copolymer provided in the invention enables a textile finishing agent to be stable under condition of high temperature, a polyelectrolyte, a high pH value or a high shear force without breaking emulsion, sticking to a roller or a cylinder and producing oil marks, allows textiles finished to be returned for repairing, and is widely used in fields like chemical fiber, natural fiber and blended products thereof, etc.

The invention relates to a high-viscous emulsified asphalt for CA mortar and a preparation method thereof, belonging to the field of preparation technology of the CA mortar used for a high speed railway plate-type ballastless track. The high-viscous emulsified asphalt comprises the components by weight percent: 45-65% of asphalt, 2-4% of SBS, 2-8% of SBR, 0.3-1.5% of cation-type emulsifier, 0.2-1.2% of non-ionic emulsifier, 0.5-2% of stabilizing agent, 1-4.5% of additive and the rest of water, wherein modifier includes the SBS and the SBR, and emulsifier contains the cation-type emulsifier andthe non-ionic emulsifier; and the sum of the weight percent of the components is 100%. The invention has reasonable compound design, and can effectively improve the capabilities of high and low temperature resistance of asphalt emulsified liquid.

The invention provides biogas residue-biological carbon organic compound fertilizer and a preparation method thereof. The biogas residue-biological carbon organic compound fertilizer is prepared from the following raw materials: biogas residue, biological carbon, conventional fertilizer, a mineral powder adhesive, a compound microorganism bacterium agent, a granulation adhesive and a film coating material; the preparation method of the compound fertilizer comprises the following steps: carrying out high-temperature cracking on straws to prepare the biological carbon; collecting the biogas residues which are generated in an anaerobic fermentation process of organic wastes; after mixing the prepared biological carbon with the biogas residues and the conventional fertilizer and melting, granulating; carrying out screening and film coating on grains to prepare the biogas residue-biological carbon organic fertilizer. The organic compound fertilizer provided by the invention sufficiently utilizes the residual straws and biogas residues and has the advantages of slowly releasing the fertilizer, improving soil, fixing carbon and reducing emission and the like; the biogas residue-biological carbon organic compound fertilizer is nutritional and is scientifically matched; when the biogas residue-biological carbon organic compound fertilizer is matched with conventional chemical fertilizer and then is applied, the fertilizer efficiency and the utilization rate can be further improved and the yield and quality of crops are remarkably improved. The method provided by the invention has the advantages of relatively low cost, a simple and feasible proces, and is suitable for large-scale popularization.

The present invention relates to methods of treatment of non-Hodgkin's lymphomas. The present invention includes administering polymeric prodrugs of 7-ethyl-10-hydroxy-camptothecin to patients in need thereof.

The invention provides a method for synthesizing 2-methyl-5-nitroimidazole-1-ethanol, which comprises the following steps: the mixed solution of 2-methyl-5-nitroimidazole, formic acid and sulfuric acid is prepared according to the mole ratio of 1:0.5-0.7:1.2-1.7; ethylene oxide and concentrated sulfuric acid with the mole ratio of 1:0.08-0.3 are alternately added into the mixed solution for 3-4 times; the reaction temperature is 72-108 DEG C, the reaction time is 2.5-5 hours, and after reaction, sodium hydroxide is added to regulate the PH value of the solution to 9.5-10.5, and a finished product is precipitated through crystallization; and a 2-methyl-5-nitroimidazole-1-ethanol finished product is obtained through purification. In the method for synthesizing 2-methyl-5-nitroimidazole-1-ethanol provided by the invention, the mixed solution of formic acid and sulfuric acid is used as a solvent, the conversion rate and the yield are obviously improved, formic acid and sodium hydroxide consumption is less, and the production cost is low.

The invention discloses low-contraction high-cementation inorganic thermal-insulation mortar. The low-contraction high-cementation inorganic thermal-insulation mortar comprises the following components in percentage by weight: 8%-28% of dead burnt magnesium oxide, 6%-19% of phosphate, 9%-32% of phosphorus slag, 5%-14% of coal ash, 30%-50% of thermal-insulation aggregate, 0.5%-2.5% of a coagulation agent, 1.0%-3.5% of an excitant, 0.3%-1.0% of rubber powder, 0.15%-0.5% of a thickener and 0.1%-0.3% of fibers. The low-contraction high-cementation inorganic thermal-insulation mortar disclosed by the invention uses the quick setting and high-early-strength characteristics of phosphate cement and the slow setting and low-early-strength characteristics of the phosphorus slag to form a special complementary gelatinization system. Not only can the amount of the phosphorus slag be obviously improved, but also the mechanics deformation properties, such as cementation and volume stability, of the thermal mortar can be obviously improved. The thermal mortar prepared by the invention has low contraction, high cementation strength, low heat conductivity coefficient, simple preparation process and very good popularization and application prospects.

The invention discloses a production method of bamboo shoot dietary fiber food, which is characterized in that: bamboo shoots are added into boiled water to be immediately sealed after being antiseptically processed by sodium dehydroacetate and alcohol; then the bamboo shoots are primarily smashed into a bamboo shoot dietary fiber wet product; the bamboo shoot dietary fiber wet product after being ground is centrifugally separated until the moisture content is 80 percent to 85 percent to be sealed and stored for more than 30 days; and finally the obtained dietary fiber wet product is directly mixed with other functional ingredients to obtain the bamboo shoot dietary fiber food. Since the pH value of the dietary fiber wet product is higher, the harsh taste of the bamboo shoots can be eliminated after the dietary fiber wet product is sealed and stored for one month, and the acid extraction and the alkaline extraction are not required; in addition, the bamboo shoot dietary fiber food with the moisture content of 80 to 85 percent is used for being directly mixed with other functional ingredients to produce the bamboo shoot dietary fiber food, so the production procedure can be reduced, and the taste of the produced bamboo shoot dietary fiber food is better; and in addition, bamboo shoot dietary fibers can be produced by completely utilizing bamboo shoot heads, so waste can be changed to valuable, and the utilization value of the bamboo shoots can be improved.

The invention discloses an organic fertilizer specially used for acidified soil, which comprises: 15-30 parts of coking coal charcoal, 10-20 parts of attapulgite, 10-15 parts of bio-charcoal, 0.5-1 part of a bio-microbial agent, 0.5-1 part of a bio-enzyme agent, 8-15 parts of drainage oil, 10-15 parts of fruit dregs, 7-12 parts of lime powder, 20-30 parts of bentonite, 3-5 parts of shell powder, 20-30 parts of banana stalk, 20-30 parts of tea residue, 20-30 parts of papermaking waste liquor, 10-20 parts of an amino acid chelating liquid, etc. In the organic fertilizer, the coking coal charcoal, fruit dregs, shell powder, banana stalk, tea residue, papermaking waste liquor, soybean sauce residue and rapeseed cake are added, and through enzymolysis and fermentation effects of the enzyme agent and bio-microbial agent, macromolecule proteins in the components are decomposed into small-molecular peptides, and majority of organic substances are fermented and decomposed so as to supply abundant nutrients to the acidified soil, thereby significantly improving soil fertility, promoting quick growth of plants, and enhancing acidification resistance of the plants.

The invention provides a Fenton printing-dyeing-wastewater deep treatment method. The Fenton printing-dyeing-wastewater deep treatment method includes the steps that 1, pretreated wastewater flows into a Fenton chemical feeding pond, and ferrous sulfate, hydrogen peroxide and sulfuric acid are sequentially put into the Fenton chemical feeding pond; 2, the wastewater flows through three boxes of the Fenton chemical feeding pond to enter a Fenton reaction pond, the mixture is sufficiently stirred in the Fenton reaction pond to be subjected to a Fenton reaction, and the wastewater obtained after the Fenton reaction is subjected to aeration treatment and then enters a flocculation pond; 3, alkali is added into the flocculation pond, the PH value is adjusted to 6.5 to 7, and polymeric flocculants are added to carry out a flocculation reaction; 4, the wastewater in the flocculation pond enters a settling pond to be subjected to mud-water separation after being subjected to the flocculation reaction, and the settling time ranges from 2.5 h to 3.0 h. The Fenton printing-dyeing-wastewater deep treatment method has the advantages of being high in practicability, efficiency, reliability, stability, automation degree and the like; treatment cost is low, running and operation are easy and convenient, and the removing rate is high and stable.

A fertilizer capable of reducing the cadmium content of rice is prepared from chicken manure, rapeseed meal, rice chaff, bamboo powder, humic acid and a microbial agent. The chicken manure, the rapeseed meal, the rice chaff, the bamboo powder and humic acid raw powder are added into a heating and stirring machine according to proportions to be stirred evenly, then the microbial agent is added for carrying out two-end type fermentation, and the fertilizer is prepared after the raw materials are fully fermented and decomposed. The fertilizer can quickly enter soil in a large area to inhibit the effectiveness of cadmium ions, change the granular structure of the soil and improve the adsorption capability of the soil, so that the overall quality of the rice soil is improved, and the cadmium content of planted rice is reduced.

The invention discloses a method for producing alcohol by molasses, which comprises the following steps: (1) diluting molasses for the first time; (2) preparing an enzyme preparation; (3) adding the enzyme preparation prepared in step (2) into the diluted molasses in step (1), mixing to prepare a molasses solution containing the enzyme preparation; (4) diluting the molasses solution in step (3) with water to obtain a brix of 38 BX-46 BX; (5) preparing distiller's yeast mash; (6) performing mixed fermentation of the diluted molasses solution prepared in step (4) and the distiller's yeast mash prepared in step (5) to obtain matured mash; (7) distilling the matured mash to obtain alcohol. By adding the enzyme preparation during the fermentation process, the method for producing alcohol by molasses of the invention saves production cost, increases the liquor content of the fermented matured mash, reduces the residual sugar content of the matured mash, reduces the difficulties for alcohol distillation and waste water treatment, is safer in operation when compared with traditional methods with sulfuric acid addition, and reaches the purposes of energy saving, emission reduction, and consumption reduction.

The invention discloses a culture solution for accelerating rapid growth of microorganisms and a using method thereof. Bacillus pasteurii is inoculated into a culture medium containing various nutrient substances, constant temperature shaking culture is performed at 25-30 DEG C, the initial PH value is controlled to be about 6, culture is performed for 12-24 h, part of bacteria solution is taken out every two days in the culture process, a spectrophotometer is utilized to measure the absorbance OD600, a strain growth curve is obtained, strains enter into a stable stage in about 18 h according to observation, and compared with research by predecessors, the strain growth speed is obviously accelerated. The culture solution for accelerating rapid growth of the microorganisms and the using method have the advantages that substances in the culture solution can be fully utilized, and the culture solution is simple in process, high in efficiency, short in used time, clean in environment and low in cost; the efficiency of microbial induction of calcium carbonate is further improved, and the concrete crack repair time can be shortened.

The invention relates to a process for treating water with high content of iron and manganese, which is characterized by adopting the aeration and natural oxidation method and a hydrocyclone device to remove iron and manganese. When the content of the iron in the ground water is more than 15mg/L, the process for treating water with high content of iron and manganese comprises the following concrete steps: making the ground water enter a primary oxygenated water tank to be aerated and oxidized, making the aerated and oxidized ground water enter a static tube mixer, adding flocculant to the static tube mixer by using a first drug adding device, making the water mixed with the flocculant enter a mechanical flocculation tank, adding lime solution to the mechanical flocculation tank from a first inlet of the mechanical flocculation tank by using a second drug adding device, making the water treated by the mechanical flocculation tank enter an iron removing filter, making the water flowing out of the iron removing filter enter a secondary oxygenated water tank, making the water flowing out of the secondary oxygenated water tank enter a manganese removing filter to move the residual iron and exceeding manganese, making the water flowing out of the manganese removing filter flow into a clear water pool, and lifting the water into a water pipe network by using a pump. Each liter of the water treated by adopting the process contains the iron of 0.3 mg or less and the manganese of 0.1 mg or less, and the quality of the water meets the quality of inlet water of a chemical water treatment system in the power plant.

The invention relates to kaoline alkaline static bleaching technology. The technology comprises: evenly mixing classified kaoline ore slurry and rongalite, standing the mixture for a while, adding a regulator into the mixture, controlling the ore slurry pH value to between 3 and 5, and evenly stirring the mixture to obtain the product. The technology has the advantages of simple operation, easy realization in production and obvious effect, can be widely used in kaoline processing enterprises and has great popularization value and application prospect.

The invention relates to a low-temperature chemical cleaning method for a thermal power plant boiler and in particular relate to a process of carrying out low-temperature chemical cleaning passivation by utilizing EDTA (Ethylene Diamine Tetraacetic Acid). The process comprises the following steps: A. connecting a chemical cleaning platform with a system which needs to be cleaned to form a cleaning system, and flushing with circulating water after the connected cleaning system is subjected to a hydraulic test until effluent is transparent and is free from impurities; B. heating the cleaning system cyclically; C. carrying out alkali wash, and flushing; washing by use of EDTA; and passivating. The process has the following characteristics: energy is saved, the consumption is reduced, the cleaning period is shortened, the cleaning cost is reduced, and the boiler can be cleaned and passivated in one step. After the thermal power plant boiler is cleaned by the EDTA at low temperature, a passivation process is added. An alkali substance is added into EDTA cleanout fluid to regulate the pH value of the EDTA cleanout fluid so as to passivate the cleaned boiler. The cleaning process disclosed by the invention is suitable for boilers of various specifications and is beneficial to implementation and popularization on site.

The invention relates to a dosing device for improving the pH value of boiler supply water, which consists of a drug storage barrel I, a drug storage barrel II, a reducing valve, an on-line instrument, a cooler, a metering pump I, a metering pump II, a plurality of stop valves and a pipeline. An opening joint pipe, a valve, reduced pressure cooling and the on-line instrument of a boiler supply water pipeline are controlled, so that the dosage concentration can be conveniently controlled, the preset best PH value range can be reached, the PH values of boiler supply water, steam and drained water can be improved and stabilized, and metal materials of a boiler and a whole water supply and return pipeline are protected from being corroded. Meanwhile, automatic dosage control can be realized, and the detection result of the pH value of the boiler supply water can be transmitted to a control room to be monitored and managed in real time.

The invention relates to the field of cutting fluid for machining, in particular to synthetic ester environment-friendly type aluminum alloy cutting emulsified oil and a preparing method thereof. The synthetic ester environment-friendly type aluminum alloy cutting emulsified oil is prepared from, by weight, 20-30 g of base oil, 10-22 g of high-temperature resistance synthetic ester, 10-30 g of high-saponification value synthetic ester, 4-8 g of a first anti-rusting agent, 2-4 g of a second anti-rusting agent, 4-12 g of an emulsifying agent with the HLB value higher than or equal to 10, 6-16 g of an emulsifying agent with the HLB value lower than or equal to 6, 1-3 g of an emulsion multifunctional assistant, 1-3 g of an aluminum alloy corrosion inhibiting agent, 2-6 g of a coupling agent and 1-3 g of a sterilizing agent.

The invention discloses silver-iodide-doped bioactive glass as well as a preparation method and an application of the silver-iodide-doped bioactive glass. The weight ratio of the silver iodide of silver-iodide-doped bioactive glass to the silver iodide of non-silver-iodide-doped bioactive glass is (90-100) to (1-10). The preparation method comprises the following steps of: weighing silver nitrate, potassium iodide and iodine according to a weight ratio of AgI; adding the non-silver-iodide-doped bioactive glass into absolute ethanol, ultrasonically processing, and fully dispersing; adding silver nitrate at first and then adding potassium iodide and iodine; uniformly ultrasonically stirring, centrifuging, filtering, washing deposits by de-ionized water, carrying out freeze drying, grinding, and sieving to obtain the silver-iodide-doped bioactive glass. The silver-iodide-doped bioactive glass is applied to preparation of drugs for preventing and treating various diseases. The silver-iodide-doped bioactive glass can be used for effectively promoting healing of human hard and soft tissue injury and inhibiting/killing bacteria, contains bioactive glass particles and silver iodide crystals, and is convenient to store, carry and use.

The invention discloses a process for deoxidizing and dehydrating tetrachloroethylene and equipment for the process. According to the process, a charging pump conveys the preliminarily produced tetrachloroethylene product to a deoxidizing and drying tower through a pipeline provided with a filter, liquid enters the deoxidizing and drying tower through a feeding hole via a buffer plate, flow baffle plates change the flowing direction of the liquid flowing through the wall of the equipment to make the liquid fully contacted with filler layers, and the qualified tetrachloroethylene liquid treated by the filler layers enters a high-quality tetrachloroethylene storage tank through a discharge hole of a deaerator. The equipment comprises the charging pump, the deoxidizing and drying tower, the filter and a finished product tank which are communicated in turn. The invention has the advantages that: the water content in the tetrachloroethylene is reduced, the pH value of the tetrachloroethylene is improved, the purity of the tetrachloroethylene is not influenced and the color of the tetrachloroethylene is good; and enclosed circulation is adopted in a system, waste residue and wastewater cannot be generated, and the operation is simple, safe and reliable.

The invention relates to preparation of an electrode material of a lithium ion battery, in particular to a preparation method of a ternary positive electrode material with low-pH, high-compactness and high cycle performance. The method comprises the following steps: 1, mixing a 523 type ternary precursor with granularity D50 being 15 [mu]m level and battery grade lithium carbonate according to a ratio of Li to M being equal to 0.49 to 0.52, and sintering; 2, mixing lithium carbonate with the same weight as in the step 1 and an intermediate 1, and sintering; 3, repeating the step 1 and the step 2 by using a 523 type ternary precursor with granularity D50 being 5 [mu]m level to obtain an intermediate 3, and mixing an intermediate 2 and the intermediate 3 to obtain an intermediate 4; and 4, after porphyrizing P2O5, mixing P2O5 and the intermediate 4 and sintering uniformly, and cooling and crushing to prepare a finished product. The preparation method is simple in process and suitable for large-scale industrial production, and the ternary positive electrode material has low pH, high compactness and high cycle performance.

The invention belongs to the technical field of soil sterilization, and discloses a simple method for remediating successive cropping obstacle soil in a vegetable field by utilizing lime nitrogen. Themethod comprises the steps of broadcasting or furrow application by adopting 60-100 kg/667 m2 of lime nitrogen particles, an organic fertilizer and a composite fertilizer as a base fertilizer, rotarytillage, subsoiling, water supplementing and film mulching. The method has the advantages that the effects of sterilizing and improving soil are achieved, soil-borne diseases of multiple vegetables can be effectively prevented, soil insects can be effectively prevented and killed, and root-knot nematodes can be effectively killed; decomposition of the organic fertilizer can be promoted, a slow-released nitrogenous fertilizer in soil can be increased, in addition, calcium required by vegetables can be supplemented, and therefore the quality of vegetables is improved; soil is improved, the environmental protection effect is achieved, acidification of soil is effectively prevented, long-time applying of the lime nitrogen can effectively remediate the successive cropping obstacle soil in thevegetable field, the content of organic matters is improved, the lime nitrogen is beneficial for microflora, the soil pH value can be increased, and the lime nitrogen is beneficial for the sustainableproductbility of soil.

The present invention provides cross-linked fracture fluids that allow for reusing return water with no treatment, minimizing the environmental impact thereof and reducing the use of fresh water to very low levels to stimulate wells or re-stimulate wells stimulated in the past. Preparation and use methods of said fluids in fractured subterranean formations drilled by wells, based on return water, production water, sea water, fresh water and mixtures thereof, are provided. Fluids are basically composed of: return water, production water, sea water, fresh water and mixtures thereof present in a sufficient amount to moisten the gelling agent and to form a gellified aqueous agent; a gelling agent; an iron control agent; an alkaline buffer; a delayed cross-linking agent, and a rupture system to “break” the fluid and improve fracture cleaning.

The present invention discloses a composite aquaculture oxygen increasing water purification agent, which comprises the following raw materials by weight: 13-17 parts of an oxygen-increasing agent, 2-6 parts of a pH value adjusting agent, 3-5 parts of active carbon, 10-18 parts of attapulgite, 20-30 parts of an ore additive, 7-9 parts of sodium carboxymethyl cellulose, 6-8 parts of chitosan, 2-4 parts of L-ascorbic acid, 2-5 parts of a curing agent, and 0.5-1.5 parts of a stabilizer. According to the present invention, the composite aquaculture oxygen increasing water purification agent has advantages of low use amount, strong flocculation adsorption capacity, effective elimination of the rancidity of residual bait in the pond, breeding pond pH value adjusting, effective dissolved oxygen increasing, water quality improving, absorption and reduction of organic matters in the water body, non-toxic raw material, easily available materials, low production cost and simple process, and has high practical value and good application prospect in the application as the aquaculture oxygen increasing water purification agent.

The invention discloses a sewage treatment process for recovering N-methyl pyrrolidone. The sewage treatment process comprises the following steps: pretreating high-concentration wastewater, wherein the pretreating sequentially comprises catalytic cracking, high-voltage pulse electrolysis and coagulating sedimentation; obtaining pretreated wastewater; carrying out biochemical treatment; sequentially carrying out mixing homogenization, anaerobic reaction, hydrolytic acidification and contact oxidation on the pretreated wastewater in the step (1); obtaining biochemical treatment water; ensuringtreatment; and sequentially carrying out precipitation reaction, multi-medium filtration and active carbon filtration on the biochemical treatment water in the step (2) to finish recovery. The methodhas the advantages of low process cost, high efficiency, good recovery effect and good wastewater treatment effect, and can be widely popularized and used.

The invention discloses a general aqueous cleaning solution for non-ferrous metals; rosin polyoxyethylene ether is served as a main agent; an alcohol ether surfactant and a fatty acid polyoxyethylene ether are served as an active agent for removing dirt; the cane sugar is served as a hard water complexing agent; the pH value is increased by using an organic base; alcohols and de-ionized water areserved as solvents; the general aqueous cleaning solution for non-ferrous metals has low cost, non-toxicity and harmlessness without corrosion and simulation on skin, harm to human bodies and pollution to the environment, has good cleaning corrosion inhibition performance and lasting effectiveness without danger to physical health of operators, and is applicable to cleaning and processing variouskinds of non-ferrous metals and capable of providing stable performance at the moderate temperature; an corrosion-resistant protecting film absorbed tightly is formed on the surface of the workpiece and has better corrosion inhibition effect; and the surface of the cleaned non-ferrous metal workpiece is clean and has no colour difference.

The invention provides a water purification device for a contaminated water body. The water purification device comprises N frames which are sequentially connected with one another and floating frames connected with the frames; each frame is composed of a hypoxic reaction tank and an oxygen-enriched filter tank; a water flow turning flow cavity is formed in each hypoxic reaction tank, the lower portion of each hypoxic reaction tank is provided with a sewage inlet, each hypoxic reaction tank is provided with a communication port, and the hypoxic reaction tanks are filled with filler; the bottom of each oxygen-enriched filter tank is provided with an aeration device, a dynamic membrane filter is arranged in an inner cavity of each oxygen-enriched filter tank, water in the oxygen-enriched filter tanks enters inner cavities of the dynamic membrane filters through the dynamic membrane filters, or the inner cavities of the dynamic membrane filters are communicated with river water through pipelines and delivery pumps, the bottoms of the inner cavities of the oxygen-enriched filter tanks are communicated with openings of sludge pipelines stretching into the lower portions of the inner cavities of the corresponding hypoxic reaction tanks through the sludge pipelines and sludge reflux pumps, and the portion, located over the corresponding frame, of each sludge pipeline is provided with an excessive sludge discharge valve. The water purification device has the advantages of being convenient to manufacture, capable of effectively utilizing carbon sources in water and good in water purification effect.

The invention discloses a method for breeding breeder's seeds of potatoes with coconut coir as a medium. The method comprises the following steps of arrangement of cultivation facilities for coconut coir, wherein a net shed, a solar greenhouse and other separation facilities are adopted, an insectproof net of 40 mesh or above is arranged, a seedbed is made and set up, the medium is laid, an irrigation facility is made, and a fertilizer application system is made; daily management after field planting of the seedbed, wherein irrigation, fertilizer application and disease and pest control are conducted, and the culture medium is added; harvesting, wherein 20 days before harvesting, water and fertilization application is stopped, the net shed or solar greenhouse is covered with a waterproof material, and then harvesting can be conducted after the medium is dried; medium disinfection and replacement, wherein the medium is disinfected and replaced before the start of second-season production. By means of the method, the problems are solved that a current culture medium (vermiculite) used for breeding breeder's seeds of potatoes is non-renewable and high in PH value, is easily hardened,and has poor permeability, harmful germs in the medium are hard to eliminate, and the environment is severely contaminated by the culture medium.

The invention particularly relates to an extraction method of sheep sclera collagen and a preparation method of ophthalmic gel. An enzyme hydrolysis-salt extraction method is adopted to extract collagen from sheep eye sclera. The invention further provides the ophthalmic gel with the sheep sclera collagen. The ophthalmic gel comprises, by mass, 80-90% of the sheep sclera collagen, 0.01-2% of preservative,0.5-2% of boric acid and borax, 0.5-2% of polyvinyl alcohol, 0.3-2% of Tween, 0.5-2% of sodium chloride and the balance of water for injection. The sheep sclera collagen is similar to human eye sclera collagen in structure and has the advantages of high purity, high tissue compatibility, low molecular weight and low repellency.

The invention discloses a fertilizer synergist capable of improving acid soil for oilseed rape and a preparation method for the fertilizer synergist. The fertilizer synergist is prepared from the following raw materials in parts by weight: 2-3 parts of zinc sulfate, 44-46 parts of zeolite, 60-80 parts of modified phosphate rock powder, 4-5 parts of glauconite, 18-20 parts of sugar beet pulp, 14-16 parts of furfural residues, 5-6 parts of calcium hydrogen phosphate, 3-4 parts of attapulgite clay and an appropriate amount of water. According to the fertilizer synergist disclosed by the invention, added raw materials of furfural residues, glauconite powder, modified phosphate rock powder, and the like are combined with the fertilizer for use, so that elements of nitrogen, phosphor and the like in soil can be released, the contradiction of between nitrogen and phosphorus shortage and insufficient nitrogen and phosphorus supply to the soil is relieved, calcium, potassium, iron and other salt-based irons can be provided, the soil PH value is increased while growth needs of the oilseed rape are ensured, the content of exchange aluminum in soil is reduced, and the good effect of improving the acid soil is achieved.

The invention discloses a high pH value tolerant bacterial strain and a novel fermentation method for producing lysine. A fermentation process by the high pH value tolerant bacterial strain does not use ammonium sulfate as an inorganic nitrogen source, and ammonia or liquefied ammonia is used for supplementing the nitrogen source in the fermentation broth to synthesize lysine. The fermentation process for producing lysine does not employ ammonium sulfate, and ammonia or liquefied ammonia is supplemented as the nitrogen source, so that the sulfate ion concentration in the fermentation broth is reduced greatly to facilitate subsequent treatment of fermentation broth; and purification by ion exchange for removing sulfate radical and other ions is not required, so as to simplify the production process of feed grade lysine hydrochloride and reduce the production cost. Supplement of ammonia or liquefied ammonia adjusts the pH value of the fermentation broth to control the inorganic nitrogen content in the fermentation broth, so as to ensure the content of inorganic nitrogen in the culture tank is in a reasonable range; and no ammonium sulfate is added, thereby reducing sulfate radical ions and other impurities in the fermentation broth, and facilitating extraction.