"" .
"accepted"@en .
"2018-02-12 16:53:18.0" .
"1" .
.
"SDN:P07::5VM2D78P" .
.
"SDN:P07::5VM2D78P" .
.
"1" .
.
.
"false" .
"surface_radioactivity_content_of_250Bk"@en .
"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. \"Bk\" means the element \"berkelium\" and \"250Bk\" is the isotope \"berkelium-250\" with a half-life of 1.34e-01 days."@en .
"2018-02-12 16:53:18.0" .
.
"SDN:P07::5VM2D78P" .