3results about How to "Product stability" patented technology

This invention discloses a method for preparing and applying crude and homogeneous polysaccharides of *Mesona chinensis* that regulate *Bacteroides*. The method includes the following steps: pulverizing *Mesona chinensis* herb, extracting by reflux with deionized water, filtering out the residue, concentrating to 1 / 4 of the volume, adding ethanol to 80% by volume, stirring evenly, letting stand overnight, centrifuging the precipitate, washing three times with anhydrous ethanol, ethyl acetate, and acetone respectively, dissolving in an appropriate amount of deionized water, and freeze-drying to obtain crude *Mesona chinensis* polysaccharide. The obtained crude *Mesona chinensis* polysaccharide is diluted with deionized water and dialyzed using dialysis bags in the range of 7000D, 100000D, 300000D, and 500000D respectively. The solutions are combined, concentrated, and freeze-dried to obtain homogeneous polysaccharides of *Mesona chinensis* with different molecular weights. The prepared crude and homogeneous polysaccharides of *Mesona chinensis* have good antioxidant capacity and can promote the growth of *Bacteroides* in the gut. In vitro experiments verified that the metabolites of *Mesona chinensis* polysaccharide have good lipid-lowering activity.

The utility model relates to a glass fiber reinforced plastic mould for manufacturing a VR kart, which comprises a first fixing table, two groups of positioning columns are fixedly connected to the end face of one side of the first fixing table, a second fixing table is fixedly connected to the top ends of the positioning columns, and a plurality of groups of supporting seats are uniformly distributed and fixedly mounted on the first fixing table and the lower end face of the second fixing table. The sliding table is slidably installed on the positioning column and corresponds to the position between the first fixing table and the second fixing table, two sets of molds are symmetrically and fixedly installed on the upper end face of the sliding table and the upper end face of the first fixing table, a positioning opening is formed in the rear end face of the mold on the right side, and a positioning mechanism is installed in the positioning opening. The positioning mechanism is arranged in the positioning mechanism, so that in the using process of the die, positioning in a workpiece is conducted through the hole position rod in the positioning mechanism, in this way, positioning in the workpiece is more accurate, the hole position edge is clearer and more attractive, repeated repairing and polishing in the later period are avoided, and workpiece production is more stable.

The application belongs to the technical field of metal processing fluid, and discloses a low-carbon biodegradable metal processing fluid, which comprises the following components in percentage by mass: 4-6% of isopropyl alcohol amine, 1-3% of nano silicon corrosion inhibitor, 2-5% of ternary carboxylic acid rust inhibitor, 0.5-2.5% of benzotriazole, 5-10% of 182 self-emulsifying ester, 4-6% of castor oil acid, 40-60% of DOTP, 4-8% of gelberol, 2-4% of ether carboxylic acid complexing agent, 2-5% of cashew phenol polyoxyethylene ether 5EO, 4-8% of cashew phenol polyoxyethylene ether 2EO, 0.4-0.6% of potassium hydroxide, and the balance of water. The low-carbon biodegradable metal processing fluid does not contain harmful substances, has excellent environmental protection performance, has good lubricity, and can be applied to the processing of metals such as copper, aluminum and its alloys, magnesium and its alloys, and has a good application prospect.