.
"1" .
"radioactivity_concentration_of_93Zr_in_air"@en .
"" .
"accepted"@en .
"false" .
.
.
"SDN:P07::2DHX2I5G" .
.
"2018-02-12 16:53:18.0" .
"SDN:P07::2DHX2I5G" .
"SDN:P07::2DHX2I5G" .
"1" .
.
.
"\"Radioactivity\" means the number of radioactive decays of a material per second. \"Radioactivity concentration\" means radioactivity per unit volume of the medium. \"Zr\" means the element \"zirconium\" and \"93Zr\" is the isotope \"zirconium-93\" with a half-life of 3.47e+08 days."@en .
"2018-02-12 16:53:18.0" .