Sentence examples for levels of impurities from inspiring English sources

Using satellite observations, they found higher levels of impurities in the snow and atmosphere between 2009 and 2013 a time in which impurity levels over Antarctica stayed constant.

The techniques reported here may be useful for designing new fabrication methods for nanostructured devices or to induce high concentration levels of impurities and defects in confined volumes.

Such diagrams have been produced for SiC containing realistic levels of impurities and show clearly which radionuclides are dominant at various neutron energies and decay times.

This study demonstrates the strong influence of trace levels of impurities on the formation of near bulk quantities of an interfacial phase.

Hence, novel analytical techniques with high sensitivity should become increasingly important in meeting the demands from regulatory agencies with regard to declaring levels of impurities in biopharmaceuticals.

According to ICH guiding principles, if the response factors of drug substance and relevant impurity are not close, we can use the drug substance as a standard to estimate the levels of impurities with providing a correction factor.

The levels of impurity elements, primarily present as second-phase oxides and sulfides, were significantly higher in the natural FeS2 than in the synthetic sample.

Regarding impurities, the PHB produced from Spirulina and the commercial samples B showed the lowest levels of impurity at 1.3%, while C. necator sample RE showed the highest at about 4% w/w (Table 2).

Spiking of impurities as well as product has also been used in the past to mimic different levels of impurity loads [ 14, 15] or to provide a measurable concentration, which can be quantified prior to and post-technology or condition implementation.

Extraction is often followed by refining, in which the level of impurities is brought lower or controlled by pyrometallurgical, electrolytic, or chemical means.

It provides a means to assess the level of impurities and proper processing of a material.