Sentence examples for leaching material from inspiring English sources

And the last source, researchers report in an upcoming issue of Geology, was rain falling into the Andes Mountains 100 kilometers east of the Atacama, leaching material like dichromate ions into ground water flowing toward the desert; over millions of years, the mountains grew taller and the change in elevation forced more ground water toward the surface.

It was also found that these resin composite brands possess different leaching abilities with regard to the amount and type of materials and different cytotoxic effects, which were found to be threshold dependent, meaning there is a critical or threshold value of leaching material at or above which the toxic effect will be significant and below which there is no toxic effect.

All of the changes that occur in the oral cavity can affect the degree and amount of leaching materials from dental resin composite restorations placed in it.

Although 2 weeks was enough to produce a sufficient amount of leaching materials to be analyzed by IR spectroscopy, it is likely that all commercially available resin-based dental materials will continue to release components that may cause detrimental effects or alter cellular function in vitro even after 2 weeks of aging in artificial saliva.

The latter requirement is not trivial, and infers that the sensor should not significantly interfere with the culture medium it should not leach material into it, and particularly pertinent for a small volume, nor should it consume sufficient oxygen to skew the measurement.

Also, the oral environment is subject to the deposition of different amounts of plaque and calculus that consequently may absorb the leaching materials and so affect the duration and frequency of exposure of cells adjacent to the retained debris on these materials (Lee et al. 1995a, 1995b, 1998).

Wataha et al. (1999) call attention to the effect of chronic exposure of the cells in vivo to these materials with continuous wash out when swallowing versus the one-time subjection of the cells in vitro to 2-week accumulated leaching materials.

Figure 3g-k showed that the leaching materials were located near the nucleus.

In such scenarios, leaching of material constituents is a primary pathway for environmental impact.

"EPA was assessing cleanup efforts in a mine that had been leaching toxic material for years," said an EPA official familiar with the accident, speaking on the condition of anonymity because the accident investigation is still underway.

After leaching, rock material and eluate were separated by filtration using filter papers.