The application of superconductivity, which is said to be a quantum phenomenon that appears on a macroscopic scale, is now entering a period of great development. At present, superconductivity is already an indispensable technology in scientific research facilities such as accelerators and medical MRI equipment. In addition, high-temperature superconducting materials are now entering a practical stage, 20 years after their discovery. In this presentation, I will introduce the status of research and development of superconducting energy devices and systems that contribute to solving environmental energy problems by utilizing the features of superconductivity, such as high efficiency, high current, high magnetic field, light weight, and compactness, including the results of my laboratory.

　The rational design of specific protein-protein interactions, such as antigen-antibody reactions, is expected to accelerate and improve not only life science research but also the development of materials, clinical reagents, and biopharmaceuticals. In this talk, I would like to introduce some of the protein-protein interactions that we have been analyzing for material development and medical applications.

　Air conditioning and refrigeration equipment, which consume the most energy among consumer products, have been required to improve efficiency and switch to refrigerants with lower environmental impact in order to conserve fossil fuel resources and reduce greenhouse gas emissions associated with energy consumption. Recent trends will be explained with research results.