Sentence examples for past concentrations from inspiring English sources
By means of intraclass correlation coefficients (ICC), we compared estimated and measured past concentrations [ 53].
In those studies where estimated past exposure was related to any outcome, the estimated past concentrations was between 36% and 124% higher than the measured.
In the past, concentrations of PCBs have ranged up to 40,000 ppm in on-site soils and sludges, and up to 5,700 ppm offshore in St. Lawrence River sediment (RMT 1986).
In view of the available information, it is plausible to assume that the LE change due to air pollution is proportional to the time integral of past concentrations weighted by exponential decay factors.
When historical data were unavailable, past concentrations of iAs in village and private wells were assumed to be the same as currently measured concentrations in water samples from the same wells.
Furthermore, past concentrations have less impact now because the body is able to repair some of the damage, an ability well documented in the case of ex-smokers [ 19- 21].
The switching probability between the two modes is dictated by measurement of attractant chemical gradient in the environment, obtained from comparison of current and past concentration.
Air bubbles trapped in ice, for example, will record the past CO2 concentrations in the atmosphere.
Over the past decades, concentrations of dissolved organic carbon (DOC) have increased in surface waters.
It is based on the idea that the stock of previous immigrants has an impact on subsequent flows through network effects, while assuming that past immigrant concentrations are uncorrelated with current unobserved economic shocks.
Since the old accretionary sediments are composed of pelagic claystone deposited in the Philippine Sea plate and terrigenous silt to sandstone accumulated in the past trench, concentrations of radioactive elements (K, U, Th) in the old accretionary sediments are higher than those in typical basaltic oceanic crust (e.g., Yamaguchi et al. 2001).
