Sentence examples for natural concentrations from inspiring English sources

The combustion of petroleum by motor vehicles also produces oxides of nitrogen, which enhance the natural concentrations of these compounds.

(For comparison, before the Industrial Revolution began in the late 1700s, natural concentrations of CO2 were about 280 ppm).

Natural concentrations of ATP in muscle cytosol are in the millimolar range buffered by creatine phosphate [14].

Reports of natural concentrations in soils are dominated by dryland soils with agricultural land uses, but much less is known about cadmium in wetlands.

This suggests that in the bay of Banyuls-sur-Mer, the filtering capacity of D. arietina is probably not saturated by the natural concentrations of phytoplanktonic cells.

Following the reversal of isotope patterns in the chase phase by LAESI-IMS-MS revealed the turnover rates and half-lives for biochemical species with a wide range of natural concentrations, e.g., chlorophyll metabolites, lipids, and peptides.

The desert complex Natanz raises the level of uranium 235 from the natural concentration of 0.7 percent in mined ore to roughly 4 percent — a level suitable for nuclear reactors.

The desert complex, the Natanz nuclear facility, raised the level of uranium 235 to roughly 4 percent from its natural concentration of 0.7 percent.

Both regions, representing significant northern and southern hemispheric conditions, show for most chemical elements a very wide natural concentration range.

Considering its spatial and temporal variability, geochemical background represents the natural concentration range of an element in a given environmental medium [24].

We used Fe as the reference metal as it usually has a relatively high natural concentration and does not usually get into estuarine sediments from anthropogenic sources.