Abstract: A cascaded energy storage system includes: a gas storage which is divided into at least one air chamber and at least one working medium gas chamber by a flexible diaphragm, where pressure of the air chamber is equal to pressure of the working medium gas chamber, and volume of the air chamber and volume of the working medium gas chamber is capable of being adjusted by contraction and expansion of the flexible diaphragm; an air compression and energy release assembly which communicates with the air chamber, and is configured to introduce compressed air into the air chamber and release the compressed air; a working medium gas-liquid conversion assembly including a working medium compression assembly, a working medium expansion assembly and a liquid storage assembly; and a heat storage assembly, configured to release heat or store heat to the working medium gas-liquid conversion assembly.

Abstract: A fusion protein has a first antigen element, a second antigen element, and optionally a tag sequence and/or a signal peptide sequence. The first antigen element includes a polypeptide derived from the Mycobacterium tuberculosis Psts-1 protein. The second antigen element includes a polypeptide derived from a protein encoded by a HPV gene. The fusion protein can induce humoral immunity and cellular immunity to a high-risk HPV cancer protein and has anti-cancer activity in vivo.

Abstract: The present invention provides a fusion protein comprising an HPV cancer-causing protein segment, a coding sequence thereof and an application thereof in preparing drugs for detecting or treating HPV-related diseases. The fusion protein can simultaneously induce the humoral immunity and the cellular immunity for a high-risk HPV cancer protein and has anti-cancer activity in vivo.