. . "2018-02-12 16:53:18.0" . "radioactivity_concentration_of_162Gd_in_air"@en . "SDN:P07::04GMJ115" . "1" . . . "SDN:P07::04GMJ115" . "2018-02-12 16:53:18.0" . "SDN:P07::04GMJ115" . "1" . "\"Radioactivity\" means the number of radioactive decays of a material per second. \"Radioactivity concentration\" means radioactivity per unit volume of the medium. \"Gd\" means the element \"gadolinium\" and \"162Gd\" is the isotope \"gadolinium-162\" with a half-life of 6.92e-03 days."@en . "" . "accepted"@en . . . "false" .