Sentence examples for past concentration from inspiring English sources

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.

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.

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.

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.

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).

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].

For each year of follow-up we estimated for each subject a 7-year moving window of past concentrations to each pollutant with a single-year lag beginning with data from 1984 (i.e., the earliest year of data available to us, and thus the largest window of exposure available) providing that exposures (i.e., postal codes) were available in at least 4 of the 7 years.

ABB and Credit Suisse have lost two-thirds of their price in the past year.Still, concentration does not appear to be the main problem with BZ Group.

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.