BRAVO test. These data, cogerner with. appropriate ‘conversion:factors:and. Living UES x ate pattern models, provided an eotinate of external dose equivalent. METHODS mee VR fpeterenteen nen) we ae or Ae lhe rat einen Se Exponentially declining activity concentrations have been observed in eure . 137 129 90 face soil for Cs, I, and Sr from 1954 to the present on Ronge lap and Utirik Atolls. Declining: activity concentrations heave also been observe in vegetation at a rate greater than that predicted by radioactive: decay. ‘ POT Epp ep Thus exponential decline in dietary activity was assumed and| the following general equations were derived. > TEM i i 1g T(Atk, De {i ¢ TheMEeTome » ve boo 2 Af i 2) "a | y a nN] : aR KiKi er a é or a ek | s Ape = te Te a it a Ge ape aera ‘hg “oy : 1 7 “409 OnR nN io | de Ee xten ist SKV i tg) soa L“r ,, Eo Oy gig (RE RS (2) i Kirk “K, E and Xi D= £,\P°9 arake S tAE + (pane) IE D E/ en Ki OMKEK e~ad Kirke-OrK;) (e + q? t; De. a {l-e -(y+Ky i js 7 : 5 (3) where ait: