Sentence examples for as a persistent source from inspiring English sources

In this latter case, the presence of the DNAPL in the lower aquifer acts as a persistent source of groundwater contamination and can produce an extensive plume in the direction of groundwater flow.

Small zones of entrapped DNAPL are shown to serve as a persistent source of low concentration plumes, difficult to distinguish from other (sorbed and immobile dissolved) sequestered mass sources.

Lack of dose dependency is a common finding in cell-based therapy (van der Spoel et al., 2011), possibly suggesting that cell-based therapy acts primarily by switching on endogenous repair rather than as a persistent source of exogenous cells or growth factors.

As ROS constitute a persistent source of DNA damage, they were assumed to contribute to the age-related deterioration of functions in the organism.

The McCain campaign's lobbyist ties have proved to be a persistent source of criticism as well as questioning during this election season, and it shows no immediate signs of letting up.

In contrast, in the deeper aquifer zone, iron reduction, associated with the release of adsorbed As and the dissolution of As bearing phases, provided and still provides to date a persistent source for groundwater pollution.

If the CEA level rises, it is possible that a persistent source of CEA, such as a hidden metastasis or recurrent tumor is present.

Grass can lead small blazes toward bigger fuel, such as trees that are more difficult to ignite without a persistent source around it.

This analysis revealed that the Helibat family has been a persistent source of genomic innovation throughout the vespertilionid diversification from approximately 30 36 Ma to as recently as approximately 1.8 6 Ma.

However, corruption allegations have been a persistent source of trouble for the DPA.

One way or another, weak states constitute a persistent source of systemic instability.