A two-year study of the long-term stability of
carrier-free polonium solutions under various acidity conditions over periods of up to 9 years was reported on in 1993 by Colle [7].
Animals in group I served as normal controls; group II animals were administered a dose of 3.7 Mbq of 131I (
carrier-free) intraperitoneally, group III animals were supplemented with zinc (227 mg/l drinking water) and animals in group IV were given a combined treatment of zinc as well as 131I.
The treatment combinations were: (1) no fertiliser applied and
carrier-free [sup.32]P placed in the 40-mm band position; (2) no fertiliser applied and
carrier-free [sup.32]P placed in the 80-mm band position; (3) 25 kg P/ha mixed with [sup.32]P and placed in the 40-mm band position; (4) 25 kg P/ha applied in the 40-mm band position and
carrier-free [sup.32]P placed in the 80-mm band position; (5) 25 kg P/ ha mixed with [sup.32]P and placed in the 80-mm band position.
Constraints on the stability of molecules radiolabeled with
carrier-free "I atoms dictate the minimum usable amount of labeled probe for adequate tracer detection in the assay (3).
If any cliche were to sum up UWB, it would be "What's old is new again." UWB has been around since the early 1 960s, known alternately as "
carrier-free," "baseband" or "impulse" technology.
These include Aqualease water-based release agents, Ease Release solvent-based systems, Permalease semi-permanent mold coatings and Actilease
carrier-free mold release application systems.
They are: * low-frequency radar * very high frequency radar *
carrier-free radar * bistatic radar.