7results about How to "Prevent oxidative deterioration" patented technology

The application provides a wine aging method, and belongs to the technical field of wine brewing, which comprises the following steps: adjusting the sulfur content of separated base wine to obtain base wine with adjusted sulfur content; sterilizing oak barrels by steam fumigation; filling the base wine with adjusted sulfur content into the sterilized oak barrels to obtain full oak barrels; aging the full oak barrels, the humidity of the aging environment is 65RH%-75RH%, and the temperature of the aging is adjusted according to the season, and the full oak barrels are regularly adjusted in sulfur content during the aging process. The wine aging method provided by the application can regularly adjust the sulfur content of the wine liquid once every 28 days during the aging process, accurately supplement the content of key components in the wine liquid which is reduced due to natural consumption, and avoid the concentration of the components being lower than the appropriate interval of aging.

The utility model relates to transformer monitoring technical field discloses a kind of oil extraction devices outside transformer oil pit, including oil pipe, fireproof groove box, special oil extraction port and oil sample valve box;The one end of oil pipe is connected with the oil outlet of transformer body, and the other end of oil pipe is connected to inside oil sample valve box;Special oil extraction port is provided outside oil sample valve box, and special oil extraction port is wall structure, and the wall structure is arranged at the fire wall outside transformer;The fireproof groove box is square tubular, and is surrounded along the full length of oil pipe arrangement.This utility model solves the security risk and efficiency bottleneck of traditional sampling mode synchronously by space isolation and dynamic protection, and provides whole-process protection for oil sample fidelity;It greatly improves the safety protection level of operating personnel and the safety of oil extraction equipment, simultaneously improves the on-site operation emergency disposal capability, reduces the personal and material losses caused by accidents, and has high economic and social benefits.

This invention belongs to the field of scintillator material preparation technology, specifically relating to a method for purifying high-purity cesium iodide and its application in the preparation of cesium iodide scintillator screens. The method involves sequentially mixing and heating cesium iodide-containing waste and residual materials to dissolve them, filtering and removing impurities, adsorption and removing impurities, concentrating and temperature-controlled crystallization, centrifuging, drying, and vacuum packaging. This process comprehensively removes solid particulate impurities, elemental iodine, and various trace metal ions from the raw materials, effectively preventing oxidation and deterioration during purification. The method is simple to operate, highly industrially feasible, and can purify waste materials to a high purity level that meets the requirements of high-performance applications. It allows for the reuse of waste materials at the same purity level, reducing production costs, alleviating raw material supply pressure, and complying with environmental protection requirements. Applying the high-purity cesium iodide obtained by this method to the preparation of cesium iodide scintillator screens using a vacuum thermal evaporation process ensures the excellent performance of the scintillator screens, making them suitable for high-end fields such as medical imaging and non-destructive testing.

This invention relates to the field of traditional Chinese medicine technology, specifically to a method for preparing concentrated Astragalus membranaceus pills and its application, including the following steps: (1) preparing a clear extract by alcohol extraction; (2) making pills by plastic molding; (3) drying the pills at a constant temperature. In the pill-making process, this invention selects 100-mesh Astragalus membranaceus mixed fine powder and adopts a mass ratio of clear extract to fine powder of 1:2. Since the 100-mesh powder has a uniform particle size and a moderate specific surface area, it can fully contact and bond with the clear extract, avoiding the problem of the pills being rough and cracked due to excessive particle size and the pills being too fine due to excessive moisture dissipation. The 1:2 ratio makes the soft material suitable for its softness and hardness, so that it will not be loose and difficult to form due to excessive powder ratio, nor will it cause adhesion and blockage of the mold due to excessive clear extract ratio. Combined with the gradient humidity soft material preparation technology, 60% purified water is added first and mixed evenly, and then the remaining water is added in two batches. Low-frequency vibration is applied simultaneously for mixing, which can make the internal humidity of the soft material uniform and the bonding force stable, thereby obtaining wet pills with smooth surface, round shape and no cracks.

The application discloses a method for extracting antidepression active Euphausia superba oil by adopting subcritical combination solvent, and belongs to the technical field of deep processing of Euphausia superba. The method is a three-stage gradient extraction method of "subcritical butane-acetone-ethanol", and realizes differential separation and enrichment of lipid components by using solvent polarity difference. The first-stage subcritical butane extraction is carried out under low temperature, closed and oxygen isolation conditions, and high-efficiency desolventizing is realized by using reduced pressure gasification, so that the heat-sensitive active ingredients are effectively reserved, and meanwhile, oxidation and metamorphosis of raw materials are avoided, thereby laying a foundation for preparation of subsequent high-quality extracts. The method successfully prepares three Euphausia superba oil products with significant component differences, and especially, the third-stage extract and the enzymatic modification product thereof exhibit excellent antidepression activity. The application realizes functional separation of Euphausia superba lipid components, and provides strong support for development of personalized and diversified antidepression products.

The application discloses a nuclear magnetic resonance fiber oil content standard sample and a preparation method thereof. The standard sample comprises a sample tube, a sealing assembly and a filler. The sample tube is a barrel structure with an open end. The material of the sample tube is a material without hydrogen elements. The sealing assembly is arranged in the sample tube and forms a first containing space with the sample tube. The filler is arranged in the first containing space. The filler comprises a first filler and a second filler. The first filler is a solid material without hydrogen elements with a particle size of 0.2-1.0 mm. The second filler is a liquid material with hydrogen elements. The kinematic viscosity of the second filler is less than 100 cSt. The T2 relaxation time of the second filler is less than 1000 ms. The nuclear magnetic resonance fiber oil content standard sample and the preparation method thereof are suitable for nuclear magnetic resonance fiber oil content testing, and have good uniformity and stability.

This application relates to the field of cosmetic packaging technology, and discloses a press pump assembly and a cosmetic bottle, including a cavity, a piston, a sealing element, a press head, and a liquid outlet tube. The cavity has a chamber extending through both ends, and a column communicating with the chamber is disposed within the chamber, with the outer circumferential surface of the column connected to the inner wall of the cavity. A portion of the piston is movably disposed within the chamber, and the other portion extends out of the chamber. The sealing element includes a first ball and a second ball. The first ball is movably disposed within the column to switch between a connected state and a closed state between the column and the chamber, and the second ball is movably disposed within the piston. The press head has a vertically downward connecting portion, which is connected to the end of the piston extending out of the chamber. One end of the liquid outlet tube near the press head is connected to the connecting portion, and the other end extends outward. The first and second balls act as one-way valves, thereby preventing external air from being drawn into the chamber, causing oxidation, deterioration, and leakage of the cosmetic liquid.