Sentence examples for indicator concentrations in from inspiring English sources

To assess the contamination of soil and crops, ratios were calculated of the pathogen and fecal indicator concentrations in soil or on crops to their respective concentrations in irrigation water (termed soil-water and crop-water ratios).

It has been proposed that imperative (legally binding) values for fecal indicator concentrations in recreational water standards be set at a level that limits the aR of acquiring gastroenteritis to 5% and that guide (recommended) values should be set at a level that limits the aR to 3% (Havelaar et al. 2001; Kay et al. 2004).

The precise epidemiologic relationships linking 'exposure' with 'illness' can then be related to the probability of exposure to particular water quality by a 'normal bather' using the known probability distribution of the exposure variable (i.e. faecal indicator concentration) in the regulated bathing waters.

Knowledge of the variability in pathogen or indicator concentrations over time at a particular location (e.g. in drinking water sources) is essential in implementation of concentration-based regulations and in quantitative microbial risk assessment.

A new method was also tested that utilizes an indicator concentration gradient in the sample to correct for the pH perturbation caused by the indicator.

Indicator concentrations were measured after the experiment.

As a result, fluorescence step sizes per AP during the second half of the train were bigger in spines than in dendrites, indicating that in spines during AP trains changes in calcium-bound indicator concentration are bigger than in dendrites.

Table 1 shows the overall geometric means of indicator organism concentrations in samples stratified by source and container characteristics.

These genetically encoded reporters were first described by Hanson et al. (2004) as redox potential sensors with two fluorescence excitation maxima, thus permitting ratiometric analysis that minimizes errors associated with variations in indicator concentration (roGFP expression), illumination intensity, and cell thickness.

Even in small dendrites, the rise in calcium-bound indicator concentration was largely independent of distance to the membrane.

This concept has been applied in the current revision of the European bathing water directive [ Commission of the European Communities (CEC) 2002] using both the NOAEL and the aR depending on the fecal indicator concentration above the NOAEL as determined in the Kay et al. (1994) studies at British seawater bathing sites.