4results about How to "Avoid Oxidative Damage" patented technology

The invention provides a central control wire harness rubber protection assembly, and relates to the technical field of central control wire harness protection. A connecting mechanism is fixedly arranged on the outer side of each rubber shell, a locking device is fixedly arranged on the outer side of each rubber shell, and a sealing device is arranged between the two sets of rubber shells. A heat dissipation device is fixedly arranged in the rubber shell, a connecting device is fixedly arranged at the bottom of a locking device, an adjusting mechanism is fixedly arranged on the inner side of the connecting device, and a joining mechanism, the locking device, the adjusting mechanism and the connecting device are arranged; the rubber shell can be simply and conveniently spliced and installed, and the phenomenon that the rubber protection assembly is inconvenient to sleeve the outer side of the cable due to the fact that the wire harness connector is larger than the outer diameter of the cable is avoided; and the wire harness can be supported according to the angle of the wire harness. The problems that during use, splicing is not convenient, and a rubber protection assembly is generally not provided with a supporting structure are solved.

This invention provides a method for decolorizing a steroid intermediate dihydroxy compound, relating to the field of pharmaceutical and chemical technology. The method includes: dissolving the crude dihydroxy compound in a halogenated hydrocarbon solvent; adjusting the pH of the system to 8.0-9.5 with an inorganic base; adding an aqueous sodium hypochlorite solution for chemical oxidation decolorization while maintaining this pH value; determining the reaction endpoint by monitoring color change or redox potential; adjusting the pH after the reaction with a weak acid, followed by separation, concentration, and crystallization to obtain the final product. This invention utilizes the selective oxidation effect of sodium hypochlorite in a specific pH buffer system, replacing the traditional physical adsorption decolorization with activated carbon. While effectively removing fermentation pigments, it avoids the oxidative damage of the 11-hydroxyl group in the steroid skeleton. The product has high purity, produces no waste activated carbon solid waste, is simple to operate, and is easily scaled up industrially.

The invention discloses a comprehensive treatment method and system for improving the germination rate of epimedium seeds. The method comprises the following steps: S1, intelligently judging the harvesting time; s2, standardized after-ripening treatment: putting the harvested seeds with fruits in a ventilated environment with the temperature of 20-22 DEG C and the humidity of 50%-60% for in-vitro after-ripening, and turning every day until the fruit state reaches a preset after-ripening end point; s3, dynamic controlled atmosphere storage: mixing the seeds subjected to after-ripening treatment with sterilized river sand, storing in a controlled atmosphere environment with the temperature of 6-10 DEG C and the CO2 concentration of 5%, regularly ventilating, and adding a vitamin E preservative into the mixed matrix; s4, breaking dormancy and accelerating germination; and S5, process monitoring and parameter optimization. According to the method, a double-channel intelligent judgment model of image form recognition and physiological index (soluble sugar) detection is constructed, the limitation of purely depending on appearance experience is overcome, form maturity and physiological maturity indexes are combined, the optimal initial quality of the harvested seeds is ensured, and a foundation is laid for the high germination rate from the source.

The invention provides a vincristine sulfate injection and a preparation method thereof, and relates to the technical field of pharmaceutical preparations. The preparation method of the vincristine sulfate injection comprises the following steps: (1) adding vincristine sulfate and rosmarinic acid into an acetate buffer solution, uniformly stirring and mixing, filtering, collecting powder, drying, grinding and sieving to obtain a vincristine sulfate-rosmarinic acid eutectic; (2) adding mannitol into the water for injection for later use; and (3) adding the vincristine sulfate-rosmarinic acid eutectic into the system in the step (2), stirring, adjusting the pH value to 4.5-5.5, filtering with a microporous membrane, sterilizing, and filling to obtain the vincristine sulfate injection. The vincristine sulfate injection disclosed by the invention is simple in preparation process, good in reproducibility and easy for industrial production. The vincristine sulfate injection has the advantages of simple raw materials, no need of any synthetic carrier material, definite components and high safety, and the prepared vincristine sulfate injection has high stability and good application prospects.