目次

Introduction: The Active Trinity in the Centers of Galaxies.- AGN Feedback on the CND-scale Molecular Gas: Submillemeter HCN Enhancement as a New Extinction Free Energy Diagnostic Tool.- Non-detection of Another Extinction-Free Proxy of Active Nuclei, Submillimeter Hydrogen Recombination Lines.- CND-scale AGN fueling: Do CNDs Drive the Growth of Supermassive Black Holes?.- Summary and Future Outlook.