"2018-02-12 16:53:18.0" . . "SDN:P07::6YJGL585" . . "surface_radioactivity_content_of_115Ag"@en . . "1" . "2018-02-12 16:53:18.0" . "The surface called \"surface\" means the lower boundary of the atmosphere. \"Content\" indicates a quantity per unit area. \"Radioactivity\" means the number of radioactive decays of a material per second. \"Ag\" means the element \"silver\" and \"115Ag\" is the isotope \"silver-115\" with a half-life of 1.46e-02 days."@en . . . "1" . "SDN:P07::6YJGL585" . "false" . "" . "SDN:P07::6YJGL585" . "accepted"@en . .