Sentence examples for be present in trace from inspiring English sources

This mixture further gradually decomposes to only a monolayer of oxygen at 770 870 K. Sodium cations were found to be present in trace amounts in the adlayer and to strongly shift the O1s binding energy to lower values.

Although no DNA was detected in the amplification reactions from the negative controls, we wanted to determine whether nifH sequences might be present in trace amounts.

However, we hypothesized that heparan sulfates (HS) could be the ligand of the LukS-PV signal peptide-expressing strain, since HS are known to bind several ECM proteins and could be present in trace amount in commercially available purified preparations of ECM proteins (Sigma-Aldrich technical service does not guarantee their ECM preparations as free of heparan sulfates).

In addition to the two hemicellulolytic enzymes, other minor enzymes present in complete T. reesei enzyme mixtures, which might be present in trace amounts in the purified fractions, could have synergistic action with the major enzymes and influence hydrolysis efficiency.

It is noteworthy that MUC2, which has been shown to be present in trace amounts in sputum (18), was not identified in AS or IS, indicating that this mucin is not a major component of either secretion.

Although accumulating on the first hundreds of micrometers, the substances that contribute to discoloration may be present in traces and we must apply the "right" techniques to detect them.

Mineral elements in wide variety are present in trace amounts in almost all foodstuffs.

Mr. Brown of Applied Environmental said the preliminary testing of the mail at the Fed did not give any indication of whether anthrax was present in trace amounts or larger quantities.

The noble gases (He, Ne, Ar, Kr and Xe) are present in trace quantities in all natural and engineered CO2.

Identification of metabolites in downstream PAH-degrading pathways is often difficult as they are present in trace amounts (Luan et al. 2006).

Ba, Ce, Cr, Nd, Rb, Sr and Zr were present in trace amounts (10 100 ppm) and did not change during the purification step.