The first two are similar to radiocarbon dating insofar as they provide absolute dates, with some uncertainty, whereas the other two provide an approximate date relative to bracketing stratigraphic layers which usually have been precisely dated by another method.
Values in brackets are approximate, based on one year before first publication.
Infectivity and virulence of the wild type, EVG016 and EVG017g was evaluated using a topical 5-dose bioassay with doses bracketing the approximate LD50 based on exploratory assays (see Methods).
Similar to the step we used before, we approximate the expression in the brackets using a second-order Taylor expansion.
We favour GSSs over Trangressive/Regressive62 (T R), or depositional sequences2 because their bounding surfaces (MFS) better approximate late deglaciation conditions and thus appropriately bracket glacial cycles.
Table 4 Impacts on agrictulture at study sites (NHNPa indicates Nahuel Huapi National Park land) Farm characteristics Ash Thickness (mm) Animal Numbers (Losses in brackets) Farm ID Location Farm Size (ha) Approximate rainfall (mm/year) Animal water source Farmer Est.
The number and the approximate percentage of proteins in each category are shown in brackets.
April and July events bracketed the range of normal flow conditions for McTier Creek, representing approximate 30%and70%0% exceedance conditions, respectively, for the 30 year flow record at an upstream USGS gage (02172300).
The percentages in the brackets represent market share – admissions from the corresponding district, and are approximate values since the database includes hospitals that report cases over different time periods from 1996 to 2004.
Using Damon Q self-ligating bracket (slot = 0.022″, width = 0.110″) and 0.018″ × 0.025″ stainless steel archwire, the approximate theoretical θ c is 2.08°.
In the above equations, the angled bracket ( ≺ ≻ Open image in new window)indicates the ensemble average that we use to approximate the density-weighted average in the simulation.
