Estimates of half-life for hexazinone determined here are broadly consistent with previous published research (Sarmah et al. 2009).
Estimates of half-lives in human fat extrapolated from measured half-lives in the fat of rats were significantly greater.
Analysis using a two-compartment model provided estimates of half-life, clearance and steady-state volume of distribution for doses above and below 20 μg kg−1[ 12].
We note, however, that if the lifespan of colonies were heterogeneous the marginal distribution of survival times would no longer be exponential and estimates of half-life less meaningful.
Peak exposures have been estimated in these studies assuming a mono- or biphasic elimination rate for TCDD, with estimates of half-life ranging from 5 to 12 years (Hooiveld et al. 1998; Michalek et al. 2002; Steenland et al. 2001).
Differences in estimates of half-life of infected long-lived cells as large as those we reported in HCV would lead to halve the time needed to treat to achieve virus eradication (assuming no viral reservoir).
There was no significant difference among the estimates of half-life, Cl/F or Vz/F for temozolomide at these different doses of temozolomide (Table 3), with an apparent dose-linear increase in AUC comparing doses between 100 and 200 mg m−2 (Table 3).
In nonhuman primates, available data suggest that the rate of elimination in the brain has region specificity; however, estimates of half-life range from = 33 days (Dorman et al. 2006a) to 53 days (Newland et al. 1987) after inhalational and subcutaneous Mn exposure, respectively.
(Another official in that department made an estimate of half a billion dollars two years ago).
One study put these trading costs at 1.44 points a year; Mr Bogle uses a more conservative estimate of half a point.
And suddenly you get the sense that the estimate of half a million tonnes of wasted fish, or of as much fish being discarded as being used, starts to ring true.
