Abstract: A power converter with secondary side regulation (SSR) for driving one or more output loads having capacitors (preferably Y-capacitors) for feedback and data transmission is disclosed. The power converter includes a transformer with primary and secondary windings, a primary circuit, a secondary circuit comprising a secondary controller, and a data transmission circuit comprising a plurality of capacitors. The primary circuit comprises one or more switching means and a primary controller. The secondary circuit is isolated from the primary circuit by the transformer and connected to the output loads and the secondary winding. The data transmission circuit connects the secondary circuit to the primary circuit for transmitting a feedback signal through to become a primary side feedback signal. The capacitors comprises one or more first capacitors on a feedback path and one or more second capacitors on a ground path.

Abstract: A preparation method for a decellularized matrix biomaterial, which combines specific pretreatment, degreasing, disinfection, decellularization, ?-Gal antigen removal and sterilization, and reserves the integrity of bioactive components and structures in a material to the maximum extent while effectively removing an antigenic substance of an animal tissue, so that a decellularized matrix biomaterial having low immunogenicity and high biological activity is obtained. In addition, the decellularized matrix biomaterial prepared by the method effectively reduces immunogen components, has good biocompatibility and biological safety, is beneficial to cell adhesion, aggregation and proliferation on the surface, and can be used as a high-activity biological matrix material to be applied to skin soft tissue defect, gingival recession and periodontal soft tissue repair.

Abstract: Provided are a protein antigen subjected to site-directed mutation and site-directed modification, and a method for site-directed mutation and site-directed modification of the protein antigen. The method comprises: site-directedly introducing an unnatural amino acid into a specific site of the protein antigen by genetic codon expansion technique; and performing site-directed modification with the protein antigen by the unnatural amino acid and a modifier, wherein the modifier is a receptor agonist such as tripalmitoyl-S-glyceryl cysteine and monophosphoryl lipid A. Further provided is use of the protein antigen subjected to site-directed mutation and site-directed modification, such as use as a vaccine.

Abstract: An animal food composition effective in reducing the amount of cholesterol in an egg including an animal food and an HMG-CoA reductase inhibitor, preferably a, statin, is described. A method of reducing the amount of cholesterol in an egg by administering to an egg-laying animal an amount of a cholesterol-reducing component effective in reducing the amount of cholesterol in said egg and the eggs produced are also described.

Abstract: An animal food composition effective in reducing the amount of cholesterol in an egg including an animal food and an HMG-CoA reductase inhibitor, preferably a statin, is described. A method of reducing the amount of cholesterol in an egg by administering to an egg-laying animal an amount of a cholesterol-reducing component effective in reducing the amount of cholesterol in said egg and the eggs produced are also described.