37results about How to "Good controllable conditions" patented technology

The invention relates to an alloy magnetocaloric material for magnetic refrigeration at a room temperature as well as a preparation method and application thereof. A chemical general formula of the material is MnCo1-xTixGe, wherein x is 0.02 to 0.08; the atomic percentage of a manganese element in the material is 33.3 to 34.4 percent; the atomic percentage of a cobalt element is 32.8 to 33.3 percent; the atomic percentage of a titanium element is 0.6 to 2.7 percent; and the atomic percentage of a germanium element is 30.2 to 32.7 percent. During preparation, reactants are added into a vacuum electric arc furnace; the vacuum electric arc furnace is vacuumized to 10<4> Pa or below, and high-purity argon gas is introduced; samples are melted for 2 to 5 times repeatedly; samples are taken out and cooled, and then put into a high-temperature resistant quartz glass test tube for vacuumizing; the high-purity argon gas is introduced to clean the gas and then put into a furnace type box; and the samples are taken out and annealed to obtain a finished product. Compared with the prior art, the alloy magnetocaloric material disclosed by the invention is a secondary phase change material, and has the characteristics of small heat stagnation and large regulated temperature zones; moreover, the problem of the heat stagnation caused by a primary phase change material can be effectively avoided; and a preparation process has simple steps, the condition controllability is good, and the material has good application prospect.

The invention relates to a composite feed additive capable of improving liver mitochondria function of jewfish as well as a preparation method and application of the composite feed additive, and belongs to the field of feeds. Each 100 parts by weight of the composite feed additive comprises the following components in parts by weight of 6-10 parts of manganese chelate methionine, 2-6 parts of copper chelate methionine, 30-50 parts of berberine, 20-30 parts of creatine, 0.5-2 parts of red Fife yeast and the balance of a carrier. The raw materials of the composite feed additive are safe, harmless, and free from residues, and create condition for production of green feeds and aquatic products. According to the preparation method of the composite feed additive, the raw materials are mixed in compounding ratio. The preparation method is simple, good in condition controllability, and good in stability, and has favorable application prospects. The composite feed additive is applied to preparation of the feed for jewfish, so that the liver mitochondria antioxidant ability and the mitochondrial respiratory chain function of the jewfish can be improved, and the mitochondria oxidative damagecan be reduced.

The invention relates to restoration eye cream and a preparation method thereof, which belongs to the field of cosmetics. The restoration eye cream is prepared from the following raw materials: water,glycerinum, butanediol, sodium hyaluronate, copolymer of ammonium acryloyldimethyltaurate and VP, erythritol, parahydroxyacetophenone, glyceryl stearate, methylparaben, copolymer of hydroxyethyl acrylate and sodium acryloyldimethyltaurate, isononyl isononanoate, dimethyl silicone polymer, vitamin E, SOD whitening enzyme, oat extract and plant pouch eliminating complex. The restoration eye cream not only has high antioxidation effect, can improve the cell activity, help the regeneration of the cells, moisturize and compact the skin, and reduce the wrinkles around the eyes and on the forehead,but also can effectively inhibit the release of histamine, can resist the free radicals, can promote the circulation of the blood capillary, can restore the injured tissue and cells, and can eliminatethe edema and remove the dark circle. The preparation method comprises the step of mixing the raw materials according to the given ratio. The method is simple and fast, good in condition controllability, and suitable for the mass production.

The invention discloses a method for extracting fungimycin in juice by acid-assisted dispersive liquid-liquid microextraction. The method comprises the following steps: adding water to a centrifugal tube as a matrix, and adding 10 ng / mL of a target toxin mixture; preparing hydrochloric acid solution, adding an extraction agent to the hydrochloric acid solution, and preparing hydrochloric acid mixed solution; adding the hydrochloric acid mixed solution to the water, and adding 0.5 mol / L-1Na3PO4 buffer solution and adjusting a pH value, forming vaporific colloid, and centrifuging; and measuringa volume of lower-layer liquid, and taking the lower-layer liquid for detecting. The method is capable of rapidly achieving extraction balance without operations of ultrasound, vortex and the like, and the method is simple.

The invention relates to an aqueous sodium ion battery Na<0.58>Mn<2>O<4>.1.38H<2>O material, preparation method and application thereof and an electrode, and belongs to the field of material and energy storage. The preparation method of the material comprises the steps of mixing a mixed solution of a potassium permanganate solution, divalent manganese salt and carbon quantum dots, collecting a precipitant, immersing the precipitant in an immersion liquid, performing separation, and collecting a solid to obtain the aqueous sodium ion battery Na<0.58>Mn<2>O<4>.1.38H<2>O material, wherein the immersion liquid comprises a mixture of NaOH and alcohol and water. The preparation method is simple in process and good in condition controllability, the obtained Na<0.58>Mn<2>O<4>.1.38H<2>O material has relatively high capacity and excellent cycle property when applied to an aqueous ion battery positive material, and the electrode containing the Na<0.58>Mn<2>O<4>.1.38H<2>O material has the characteristics of high safety, no pollution, low cost and long service lifetime.

The invention provides a diamond nano needle array composite material and a preparation method and an application thereof. The diamond nano needle array composite material provided by the invention comprises a substrate layer and a diamond nano needle array which is formed on the surface of the substrate layer, wherein a three-dimensional graphene layer grows on the surface of a diamond nano needle in the diamond nano needle array. The preparation method of the diamond nano needle array composite material, disclosed by the invention, comprises the following steps: depositing a diamond film layer on the surface of a base body; etching the diamond film layer into a diamond nano needle array; and enabling the three-dimensional graphene layer to grow on the surface of the diamond nano needle array. The diamond nano needle array composite material disclosed by the invention is excellent in heat-conducting property, high in property field emission property and stability, simple in preparation process, and good in condition controllability, and can be applied to gas sensors, biosensors and electrochemical fields.

The invention relates to a porcine lactobacillus, a microecological preparation and a preparation method and application thereof, belonging to the fields of bioengineering and feed. The biological preservation number of this strain is CCTCC NO: M 2017596, and the classification name is Bacillus lactis Q-21. It is easy to colonize the intestine and grow rapidly, ensuring the quantitative advantage of intestinal beneficial bacteria and preventing the imbalance of intestinal flora. , has the characteristics of adapting to the acidic environment of the gastrointestinal tract, producing spores, and having strong stress resistance. The microecological preparation includes the above-mentioned bacterial species, and the preparation method includes inoculating the above-mentioned bacterial species in a fermentation medium, and fermenting. The preparation method is simple and effective, and can be widely promoted in production and application. The thus-prepared microecological preparation contains highly active swine-derived Bacillus lactis, and when it is applied to piglet breeding, it can reduce the pH value of the gastrointestinal tract of piglets, kill intestinal pathogenic microorganisms, and also promote feed nutrients. digestion and absorption, and improve the growth performance of piglets.