Sentence examples for exposure by which from inspiring English sources

The HSE does not dispute expert scientific opinion that there is no threshold level of exposure – "by which we mean the number of fibres breathed in" – below which any environment can be judged risk-free.

However, in half of cases ADC changes were still present 20 min after exposure, by which time temperatures would have returned to baseline.

In their letters, Abraham and Indulkar comment that downward movement of the pesticides could start only at the onset of monsoons 5 6 months after exposure, by which time no endosulfan would remain because it biodegrades rapidly.

Recreation, either domestic or abroad, was the means of exposure by which 59% of California residents acquired leptospirosis in the 20-year period of 1982 to 2001, increasing to 85% in the most recent 5 years.

Having acknowledged and corrected the error pointed out by Kolanz, we take strong exception to his statement that "the study cannot sustain conclusions about the degree of risk associated with lower levels of exposure," by which he means less than the OSHA PEL of 2 μg/m (OSHA 2005).

Aware of his conspicuous devices, Ophüls draws comedy from them, too, as when, because of the double exposures by which the ghosts are created onscreen, other characters seem to walk through them, and the late husband claims that they make him itch all over.

PAT exposures may have been only a subset of exposures by which persons acquired the infection during the decades in which PAT was administered.

This reversibility was not seen after longer TNF-α exposures, by which time the blob form with increased mtROS levels and increased apoptosis were seen (data not shown).

In order to define the landfill characteristics and the potential consequences to the environment, an impact analysis is carried out, considering the engineering aspects of the waste deposit and the exposure pathways by which the contaminant can migrate and reach the environment and human beings.

This question is central to the discussion of the circumstances and exposure pathways by which dioxin emissions may affect the human population.

These studies have documented increased body burdens of dioxins among exposed populations but have provided limited data regarding the potential exposure pathways by which the dioxin releases have reached the human population.