This effect modification is conceptually similar to the "dose rate effective factor" used in radiation epidemiology that describes for a specific type of radiation the effects on disease risk of total radiation dose delivered at lower (protracted or highly fractionated) dose rates compared with the effects at higher (or acute) dose rates (National Research Council 2006).
Adaptations to the aquatic life include a highly-mobile protracted snout, large hindfeet and a long tail with stiff hairs [ 9, 10].
It's worth noting that the prospect of several current officials jockeying for higher office is highly preferable to the stale status quo of protracted incumbency.
El Salvador, the most densely-populated state on the mainland of the Americas, is a small and highly-industrialised country that has recovered from a protracted civil war, but still suffers from its aftermath in terms of a divided society.
More than one treatment course is a reliable index of persistent infection and the finding of this as a highly significant risk factor in all analyses supports the hypothesis that protracted and severe infection may cause post-infectious complications.
Half Life 2's protracted development with its secrecy and sudden delay due to a highly publicized code leak before release felt like an eternity.
In 2004, after anticipation that has rarely been seen since, Half Life 2's protracted development – with its secrecy and sudden delay due to a highly publicised code leak before release – felt like an eternity.
Our results are highly suggestive of the presence of the so-called 'antiangiogenic window' (Bocci et al, 2002) when protracted exposure to low concentrations of SN-38 was used.
We found that in both groups treatment response was highly variable, with some patients rapidly returning to pre-relapse symptom severity levels, and others having a more protracted recovery.
We conclude that protracted dry seasons will have far more serious effects on fragmented than intact rainforests, with the former becoming highly vulnerable to destructive fires.
