"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. \"Np\" means the element \"neptunium\" and \"236Np\" is the isotope \"neptunium-236\" with a half-life of 9.17e-01 days."@en . "" . "2018-02-12 16:53:18.0" . . "false" . "SDN:P07::89F3RRUS" . "accepted"@en . "1" . . . "SDN:P07::89F3RRUS" . "1" . "integral_wrt_time_of_radioactivity_concentration_of_236Np_in_air"@en . "SDN:P07::89F3RRUS" . . . . "2018-02-12 16:53:18.0" .