143 results about "Citrinin hydrate" patented technology

The invention relates to preserving liquid for sperm, in particular to the preserving liquid for swine sperm, and belongs to the technical field of animal reproduction. The preserving liquid for the swine sperm comprises the following components: 25.5 to 35.0g/l of anhydrous dextrose, 5.1 to 7.0 g/l of trisodium citrate, 1 to 10 g/l of sodium bicarbonate, 2 to 4g/l of EDTA, 1 to 3g/l of potassium chloride, 2.4 to 3.4g/l of citric acid, 8.5 to 9.5g/l of trihydroxymethylaminomethane, 0.26 to 1g/l of amikacin and 0.2 to 1g/l of vitamin C. Through detection, in the swine sperm preserved by the preserving liquid, the sperm viability reaches 0.60 to 0.85 and the integrity rate of sperm acrosome reaches 90 percent, which excess the requirement of the current artificial fertilization.

The invention provides a preparation method of a sawtooth-like nickel-cobalt-iron PBA (prussian blue analogue) sintered oxide nanomaterial, and belongs to the technical field of materials. The preparation method comprises the following steps: a cubic-structured nanometer nickel-cobalt-iron PBA precursor is synthesized from nickel nitrate hexahydrate, trisodium citrate trihydrate, potassium ferricyanide and potassium hexacyanocobaltate(III); an ammonia water solution is used for corrosion, centrifugal separation is performed, a sample is washed and dried, a sawtooth-like nickel-cobalt-iron PBAnanomaterial is obtained and sintered, and a 'Z'-Ox nanomaterial is obtained. The 'Z'-Ox nanomaterial can effectively catalyze peroxymonosulfate to generate hydroxyl radicals and sulfate radicals, andaccordingly, bisphenol A is degraded. The position of corrosion is determined by uneven distribution of metal coordination bonds in the precursor, anisotropic corrosion is formed, and a new way is opened up for fine adjustment of the structure and properties of an MOF material; the method has the characteristics of being simple to operate, short in preparation period, high in economic benefit andsuitable for large-scale production.

Belonging to the technical field of boar semen dilution, the invention relates to a boar antiviral long-acting semen diluent formula and a preparation method. The boar semen diluent comprises: alpha-D-glucopyranose powder, fructose, trisodium citrate dihydrate, ethylenediamine tetraacetic acid disodium, sodium bicarbonate, polyvinyl alcohol, trishydroxymethylaminomethane, inositol, vitamin C, arginine, a radix isatidis injection, a 5% ceftiofur sodium injection, and a 5% Ribavirin injection. The preparation method includes: dissolving all the components in distilled water, mixing the components evenly, and conducting sterilization to obtain the boar semen diluents. The formula involves rich nutrients, antibacterial Chinese and western medicine components and antibacterial components, thus ensuring normal sperm metabolism. After certain period of time at the lower limit of storage temperature, the effects of nutrition and sperm shock prevention can be realized, and the invasion of external bacterial viruses in an artificial insemination process can be avoided.

The invention discloses a preparation method of a nano 1T phase molybdenum disulfide/nickel disulfide composite nano material, belonging to the field of preparation of inorganic material transition metal chalcogenide. The preparation method adopts a two-step method, and comprises the following steps of: firstly, synthesizing a molybdate- radical- intercalated nano nickel hydroxide nanosheets froma plurality of substances of nickel nitrate, nickel chloride, ammonium molybdate hydrate, sodium molybdate, hexamethylene tetramine, trisodium citrate dihydrate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate as raw materials; and then carrying out hydrothermal synthesis by taking the nanosheets as templates and taking one or more of thiourea, thioacetamide or L-cysteine as sulfur sources to obtain a high-purity nano 1T-phase molybdenum disulfide/nickel disulfide composite nano material. The preparation method has simple process, mild conditions, high production efficiency and safe preparation process. By adjusting the dosage of the sulfur sources, the proportion of 1T phase molybdenum disulfide can be adjusted to obtain high purity 1T phase molybdenum disulfide.

The invention discloses a preparation method for nano MnO of a negative electrode material of a lithium ion battery, which belongs to the technical field of lithium ion battery material and electrochemistry. The method comprises the following steps of: firstly dissolving polyvinylpyrrolidone K30 in glycol under the condition of magnetic stirring, wherein the concentration of the polyvinylpyrrolidone K30 is 2.0 to 4.0 g/L; then adding citric acid monohydrate with the concentration of 8.4 to 42.0 g/L; adding manganese acetate tetrahydrate when the adding citric acid monohydrate is dissolved completely, wherein the molar ratio of the citric acid monohydrate to the manganese acetate tetrahydrate is between 0.3 and 1.6; and then subjecting the mixture to magnetic stirring, heating the mixture between 140 DEG C and 180 DEG C to evaporate the solvent; transferring the red-brown sticky material obtained into an over of 140 to 180 DEG C to dry for 3 to 5 hours; and finally subjecting the product dried to thermal treatment of 600 to 1000 DEG C for 1 hour in H2/Ar mixed atmosphere to obtain nano MnO of a negative electrode material of a lithium ion battery. The preparation method for nano MnO of a negative electrode material of a lithium ion battery provided by the invention has the advantages that the specific capacity of the nano MnO negative electrode material prepared by means of themethod provided by the invention is high, the cycle performance is stable, the security performance is good, the preparation method is simple and easy, the production conditions are mild, and the preparation method is suitable for large-scale production.

The invention relates to the field of lithium ion batteries, and discloses a silicon negative electrode material and a negative electrode sheet coated with carbon nanotubes, a preparation method thereof and a lithium ion battery. The preparation method of the silicon negative electrode material comprises the following steps: (1) dissolving polyethylene glycol, citric acid and/or citric acid monohydrate and transition metal salt in a solvent to obtain a precursor solution; (2) mixing the precursor solution with the silicon material, filtering, washing, and then drying under the condition of isolating air to obtain the precursor-coated silicon material; (3) heating the precursor-coated silicon material in an air atmosphere to 200-280 DEG C for sintering for 1.5-3.5 hour, naturally cooling toobtain MOx/Si composite pow; (4) heating the MOx/Si composite powder under the protection of inert gas and/or weak reducing gas to 400-800 DEG C for sintering for 1-5h. The silicon negative electrodematerial obtained by the method has stable electrochemical performance, can avoid damage to the structure of carbon nanotubes, has simple process, does not use flammable and explosive alkane as carbon source, and has high safety.

The invention discloses a displacement type electroless gold plating solution, which comprises monopotassium citrate monohydrate bis(malononitrile alloy (I)), a conductive compound, a buffering agent, a shielding complexing agent, a nickel oxidation remover and water. The nickel oxidation remover is one or more of diethylenetriamine, pentamethyldiethylenetriamine, triethylenetetramine, hexamethyltriethylenetetramine and tetraethylenepentamine. The present invention provides the source of gold ions with potassium citrate monohydrate (malononitrile alloy (I)) as the displacement type chemical gold plating solution, thus does not need to use potassium gold cyanide as the gold source compound, and is an environmentally friendly displacement chemical Gold plating solution. Since the substrate metal is easily corroded in the electroless plating solution of the displacement type to produce more nickel oxides, the nickel oxide remover is used to remove the nickel oxides on the surface of the substrate metal. Experimental results show that the uniformity of the plating film formed by using the displacement type chemical gold plating solution provided by the invention is good, the grain boundary has no corrosion condition, and the solder wettability is good.

The invention discloses a selenium enrichment and cadmium reduction rice planting method, and belongs to the technical field of planting. The planting method includes the steps: field selection; rice seedling culture; site preparation and fertilization; transplantation; field management; rice harvesting and storage. Field management includes spraying selenium-containing leaf fertilizers to leaf surfaces, wherein the selenium-containing leaf fertilizers comprise sodium selenite, citric acid monohydrate, urea, potassium chloride and monopotassium phosphate. Particularly, the selenium-containing leaf fertilizers are sprayed to the leaf surfaces once or twice within specified time before rice breaks, selenium enrichment and cadmium reduction effects can be simultaneously achieved, and the method has the advantages of simplicity in implementation and remarkable effects.

The invention discloses a preparation method for a polyvinylidene fluoride (PVDF) porous film. The method comprises the following steps: adding PVDF powder into dimethyl formamide (DMF), stirring for 30-60min to form a PVDF/DMF solution in the concentration of 4%-6%, and then adding citric acid monohydrate grains into the PVDF/DMF solution and stirring for 30-60min, thereby acquiring a transparent macromolecule precursor solution; dropping the macromolecule precursor solution onto a treated glass plate, completely spreading out the solution according to a tape casting method, and then drying the glass plate at 40-70 DEG C, and curing and forming a PVDF film containing CAM on the glass plate after 20-60min; putting the cured and formed glass plate into a NaHCO3 solution and soaking for 20-40min; and taking out the film floating on the water level, washing the residual NaHCO3 solution on the film with ethyl alcohol and deionized water in turn, and then drying the film at 40-60 DEG C, thereby acquiring the PVDF porous film. The PVDF film prepared according to the preparation method provided by the invention has better mechanical strength and flexibility as well as super-oleophylic/oily super-hydrophobic property.

The invention discloses a micro-nano structure zinc oxide-carbon composite pellet and a preparation method thereof. The micro-nano structure zinc oxide-carbon composite pellet is obtained by hybridization compounding of zinc oxide and carbon to obtain a solid pellet having the diameter of 6-12 micrometers, wherein vertical nanosheets having the length of 700-900 nanometers, the height of 700-900 nanometers and the thickness of 15 to 25 nanometers are formed on surfaces of the solid pellet and are connected with each other into a nest; a mole ratio of zinc oxide to carbon is (60-70%): (30-40%); zinc oxide has a hexagonal structure; and carbon comprises amorphous carbon and graphitized carbon and a weight ratio of the amorphous carbon to the graphitized carbon is (85-95%): (5-15%). The preparation method comprises the following steps of dissolving zinc acetate dihydrate, urea, sodium citrate dihydrate and glucose in water to obtain a mixed solution, carrying out hydrothermal treatment on the mixed solution to obtain a reaction solution, orderly carrying out solid-liquid separation, washing and drying to obtain an intermediate product, putting the intermediate product in an inert gas atmosphere, and carrying out annealing to obtain the micro-nano structure zinc oxide-carbon composite pellet. The micro-nano structure zinc oxide-carbon composite pellet can be widely used for fields of catalysis, adsorption and photoelectricity.

The invention relates to a food fresh-keeping method, and discloses a tilapia fresh-keeping method, comprising a tilapia preservative, wherein the tilapia preservative is made of hydration sodium carbonate, sodium carbonate, sodium bicarbonate, hydration sodium citrate, sodium chloride, etc., and processed tilapia fillets are preserved under 0-4 DEG C after uniformly immersed for 10-15min in the tilapia preservative. The raw materials for preparing the tilapia preservative is in a foodstuff grade, is safe and innocuous, and accords with foodstuff security proposed by state at present. A shelf life of fresh tilapia flesh by using the preservative can reach 10-15 days, and sense, physical and chemical and microbe indexes of the tilapia flesh reach tilapia fillet requirement, and satisfies demands on fish flesh quality for consumers in our country. The tilapia flesh can obtain a long shelf life, it makes convenient for prolonging a circulation and shelf life of the fish flesh, and the raw materials have low cost.

The invention belongs to the technical field of a paddy planting fertilizer and specifically relates to a selenium-rich cadmium-reducing leaf fertilizer special for paddy. The selenium-rich cadmium-reducing leaf fertilizer special for paddy is composed of citric acid monohydrate, sodium selenite, urea, potassium chloride, monopotassium phosphate, soluble microelement compound, momordica grosvenori and herb of alligator alternanthera. The leaf fertilizer can increase the absorbing conversion rate of the paddy for selenium, has an excellent cadmium-impeding performance, is rich in nutrition and is easily absorbed. After the fertilizer is applied to the paddy, the selenium-rich cadmium-reducing efficiency of the leaf fertilizer is higher, the effect is stable and the yield of the paddy is high.

The invention discloses a magnetic nano functional material for extracting uranium from seawater, and a preparation method thereof. The preparation method includes the following steps: step 1, reacting ferric chloride hexahydrate with trisodium citrate dihydrate to obtain Fe3O4 particles; step 2, preparing Fe3O4@SiO2 particles through a compound reaction; step 3, dispersing Fe3O4@SiO2 in a mixed solution of ethanol and ammonium hydroxide, adding titanium isopropoxide, and obtaining Fe3O4@SiO2@TiO2 particles after reaction; step 4, dispersing Fe3O4@SiO2@TiO2 in an NaOH solution, and performingcalcination after reaction to obtain Fe3O4@s-TiO2 particles with developed surfaces; step 5, dispersing Fe3O4@s-TiO2 in acetic acid, adding a crosslinking agent, and carrying out an oil bath reactionto obtain cyanated Fe3O4@s-TiO2-CN particles; step 6, dispersing Fe3O4@s-TiO2-CN in a mixed solution of methanol and water, adding hydroxylamine hydrochloride, adjusting the pH of the solution to 7, and carrying out an oil bath reaction to obtain amidoximated Fe3O4@s-TiO2-AO particles. The Fe3O4@s-TiO2-AO material prepared by the preparation method has a developed surface, good magnetic properties, high stability, durability and bio-resistance and excellent adsorption selectivity for the uranium, and can be used for eliminating the uranium in uranium-containing water bodies and extracting theuranium from the seawater.

The invention discloses a method for quickly preparing a rapid-charging graphene-based positive electrode material. The method includes the steps of preparing a lithium iron phosphate precursor solution with specific concentration from iron nitrate nonahydrate as an iron source, lithium dihydrogen phosphate as a phosphorus source and a lithium source and citric acid monohydrate as a carbon source,adding a proper quantity of graphene oxide solution with ultrasonic operation and stirring sufficiently to ensure that graphene is dispersed in the solution evenly, adding the prepared solution intoa liquid storage tank, and subjecting the prepared solution to spray pyrolysis in the reduced atmosphere so as to obtain a black powder product. The method has the advantages that compared with traditional solid-phase mixing, the graphene is mixed with raw materials in the solution state, and even dispersion and coating of the graphene on an active material can be achieved to guarantee stability and uniformity of the black powder product; the black powder product is synthesized by one-step spray pyrolysis, and accordingly the method is simple and reliable in production technology, uniform in product stability, low in energy consumption, environment friendly and suitable for large-scale industrial production.

The invention relates to a preparation method of flaky Cu9Fe9S16 nanoflowers. The preparation method includes dispersing a ferric salt and a manganese salt into a solvent with stirring, adding trisodium citrate dihydrate with stirring, adding sodium acetate with mixing uniformly, performing solvothermal reaction for 6-8 hours at 180-240 DEG C prior to centrifuging and washing so as to obtain Fe2MnO4 nanocrystalline; dispersing the Fe2MnO4 nanocrystalline into water, adding a (NH4)2S solution, conducting ultrasonic dispersion and centrifugal washing, and dispersing a product into water so as to obtain dispersion liquid; adding a copper salt solution into the dispersion liquid, and conducting ultrasonic dispersion and centrifugal washing so as to obtain the flaky Cu9Fe9S16 nanoflowers. The preparation method has the advantages of simplicity, safety, environment friendliness, low cost and easiness in operation. The flaky Cu9Fe9S16 nanoflowers are capable of effectively converting near-infrared light into heat and have a nuclear magnetic imaging effect, thereby being quite promising in application prospect for photothermal therapy and diagnosis of cancers.

The invention provides a cold-water instant pig seminal fluid dilution powder formula, a manufacturing process and an application method, and is characterized in that each dosage of the formula comprises the following components: 36.0-40.0 g of glucose, 0.8-2.0 g of sodium bicarbonate, 6.0-8.0 g of trisodium citrate dihydrate, 1.0-3.0 g of potassium chloride, 1.0-3.0 g of citric acid monohydrate, 1.0-3.0 g of disodium ethylenediamine tetraacetic acid, 0.2-1.0 g of penicillin of 800,000 units, and 1.0-3.0 g of Tris (tris(hydroxymethyl)metyl aminomethane). The formula has easily-available materials, simple preparation, easy transport and storage, convenient usage, low cost, and long preservation time for seminal fluid; during application, only a certain amount of secondary distilled water is added, and dissolution is realized with cold water; the formula is suitable for dilution of pig seminal fluid which is preserved at a constant temperature of 17 DEG C, can reduce seminal fluid production cost and increase economic benefits.