Sentence examples for samples of unknown from inspiring English sources

Chemists refer to published libraries of chemical shifts both to identify the substances present in samples of unknown composition and to infer the structures of newly synthesized molecules.

Meteorites are rock samples of unknown provenance.

Finally, 107 of the groundwater samples of unknown origin could be classified.

The accurate determination of mercury (II) ions in samples of unknown composition is demonstrated with a fortified tap water sample.

The developed biosensing approach was successfully used to determine triglyceride concentrations in real sebum samples of unknown triglyceride content.

To demonstrate the sensitivity, quantifiable detection of two blindly spiked samples of unknown concentrations has been performed at concentrations below the limit of detection for the enzyme-linked immunosorbent assay.

The DNA sample of unknown composition is loaded in some of the wells, while another sample with known-size DNA fragments is loaded to serve as a molecular ruler.

If the sample is a low-index zone axis image of a crystal, there is no simple Fourier space technique to measure residual aberrations for a sample of unknown thickness or composition.

In contrast to other TLC based methods, this method can be used alone for the determination of residual chlorpyrifos in sample of unknown origin and can produce reliable and valid results.

Analysis of multilocus genotypes is fundamental to conservation genetics, allowing inference ranging from population delineation to identification of dispersers; additionally, the natal range of a sample of unknown origin may be assigned.

One sample of unknown gender was omitted from the statistics.