Sentence examples for ppm may be from inspiring English sources
Exposure to a massive concentration of NH3 (>5000 ppm) may be fatal within minutes.
The strong absorption at 3.71 ppm may be attributed to the presence of glycosylated compounds (β-Glc and α-Glc).
The main signal at 56 ppm may be associated with either the methoxyl substituent on aromatic rings of guaiacyl and syringyl units in lignin, or with C-N bonds in amino acid moieties.
The broad band around 131 ppm may be mainly related to unsubstituted and C-substituted phenyl carbons of lignin monomers of guaiacyl and syringyl units as well as to condensed aromatic moieties, while the signals shown in the phenolic aromatic region (152 ppm) indicated the presence of O-substituted ring carbon derived from different aromatic structures.
From a risk perspective, knowing the percentage of fish that may have mercury levels > 0.3 or 0.5 ppm may be important in their selection process.
In a minority of patients, inspiratory NO concentrations > 5 ppm may be necessary to obtain the maximum improvement in arterial oxygenation.
Novel strategies such as family member-supervised DOTS [ 20] and DOTS offered through PPMs may be more flexible options that could lead to higher cure rates without compromising patient choice.
The presence of two other correlation peaks of the CH 2 groups at 4.28 4.37 ppm/49.6 ppm and 4.29 4.38 ppm/41.3 ppm, which may be assigned to the fragment: triazol CH 2 –N BOC CH 2 –Ar of compound 3 together with the absence of the correlation peak that is characteristic of the CH 2 –NH2 of compound 2 at 3.71 ppm/37.1 ppm, unambiguously confirmed the expected course of the reaction.
A performance analysis of PPM variants may be found in [134, 146].
Most of the samples exceed the 1,500 ppm indicates may be attributed to infiltration from the sewage canals unprotected drainages and industrial wastes.
The COSY spectra also reveal correlations between protons resonating at 3.98 and 4.19 ppm, which may be attributed to glycerol protons in lipids.
