Sentence examples for significant oxygen from inspiring English sources

(Most geologists think the atmosphere lacked significant oxygen until about 2.2 billion years ago).

Another significant oxygen compound is chromium oxide, also known as chromium sesquioxide or chromic oxide, Cr2O3, in which chromium is in the +3 oxidation state.

In the Ti samples no buried oxide is formed due to significant oxygen diffusion.

All catalysts showed a first order dependence in N2O without significant oxygen inhibition.

In contrast, a significant oxygen contamination occurs during milling (2.6 wt.% after 40 h of milling).

XRD (x-ray powder diffraction) and EDX (energy dispersive x-ray spectroscopy) analysis showed significant oxygen contamination on all samples.

Thus, the aggressive chemical treatments during the process of the electrodeposition also can possibly introduce significant oxygen-containing functional groups and provide the increased active sites for I 3 − reduction to further boost the electrocatalytic ability of the samples [42].

On the other hand, virtually no significant oxygen-based functional group peak exists to classify GnP hydrophilic nature suggesting a highly pristine graphitic structure similar to the characteristic of CNT [30,43].

In addition, Au25Pd shows the highest peak potential (approximately 0.9 V) in both the anodic and cathodic scans, indicating that significant oxygen-containing species (e.g., hydroxyl) only form at higher potential, and therefore, the Au/Pd catalysts could remain active over a wider potential window without being poisoned by hydroxyl groups.

No significant oxygen-dependent changes in PHDs mRNA expression were observed in E-PE explants (Figure 3A), suggesting that E-PE placentae fail to sense changes in oxygenation.

Concordant with these observations, the genomic DNA of thymus tissue showed significant oxygen-associated shortening of telomere length as another marker of DNA damage and genomic instability (Figure 2E).