Sentence examples for background concentration of the from inspiring English sources
The detection of antagonistic activity requires a background concentration of the agonistic reference substance and, hence, antagonistic activity in the sample leads to a reduced expression and activity of the reporter enzyme (i.e. decrease in luminescence or color change).
Geoaccumulation,index,left( {I_{geo} } right), =,log_{2},left[ {frac{{C_{n} }}{{1.5, times,B_{n} }}} right], (Muller 1969) where Cn is the determined concentration of the examined metal in the soil and Bn is the geochemical background concentration of the same metal.
Briefly, this was the concentration, measured by ELISA, of IL4, IL13 and IFNγ produced by splenocytes and MLNs stimulated in vitro with S. ratti parasite antigen (above the background concentration of the media-only controls).
For example, Hoek et al. (2002) identi-fied a consistent association of cardiopulmonary mortality with traffic exposure, but not with estimated ambient background concentration of the traffic indicator pollutants black smoke and NO2.
These values represent the upper limit of the background concentrations of the potential toxic trace metals in sediments [10] and allows the identification of anomalous concentrations.
The area of the PMZ for each discharge outlet is affected by their respective factors, mainly including the discharge load from the outlet, hydro-dynamic flow feature around the outlet, natural assimilative capacity of local water body, and background concentrations of the pollutants of interest.
In this study, As background concentration (10.7 mg/kg) was obtained based on the environmental background concentrations of the loess materials of the Yellow River [ 24].
The ASPEN model, in contrast, relies on more complex data sources, incorporating not only meteorological and pollutant source data, but also fate and transport data (including information about reactive decay of pollutants, deposition, and secondary formation) and monitoring data to estimate background concentrations of the pollutant of interest [ 25].
Regulatory agencies such as the EPA and state health and environmental departments determine allowable levels of chemicals in soils and water based upon formulas that take into account criteria such as toxicity, exposure, and naturally occurring background concentrations of the chemicals.
In Tanzania, the background concentration of nitrate in the groundwater remains poorly understood.
