"SDN:P07::1P8I1QWY" . "The phrase \"integral_wrt_X_of_Y\" means int Y dX. The data variable should have an axis for X specifying the limits of the integral as bounds. The phrase \"wrt\" means \"with respect to\". \"Radioactivity\" means the number of radioactive decays of a material per second. \"Radioactivity concentration\" means radioactivity per unit volume of the medium. \"Nd\" means the element \"neodymium\" and \"152Nd\" is the isotope \"neodymium-152\" with a half-life of 7.94e-03 days."@en . "2018-02-12 16:53:18.0" . "" . "false" . "1" . . . "accepted"@en . "integral_wrt_time_of_radioactivity_concentration_of_152Nd_in_air"@en . . . "1" . . . "SDN:P07::1P8I1QWY" . "SDN:P07::1P8I1QWY" . "2018-02-12 16:53:18.0" .