Sentence examples for proportion of lead from inspiring English sources

And in September 2015, researchers found that the proportion of lead in Flint children's blood levels had doubled to above-average levels, with potentially irreversible consequences for some.

Researchers can now use cores of these sediments to make out when the ancient Romans switched their water delivery systems, taking advantage of the fact that the proportion of lead atoms with different weights changes depending on where the lead ore was mined.

We then took the ratio of the concentration of lead per unit mass of cooked meat from our lead assays to the concentration of lead shot in the body in gunshot per unit body mass to be the proportion of lead lost from gunshot pellets as small fragments.

Hence, the proportion of the lead ingested that remains in the gut at time t (in days) since ingestion is given by exp −k1t), where k1 is a constant, and (1−exp −k1t)) is the proportion of lead ingested that has moved from the gut to the blood by that time.

It was also estimated that between 1,250 and 1,440 children had B-Pb levels greater than 45 μg/dl and were in need of environmental, medical and possibly, pharmacological interventions; these data of the Ministry of Health screening confirmed the proportion of lead poisoned children described in our study.

Minerals that contain uranium-238 when initially formed may be dated by measuring the proportions of lead-206 and uranium-238; the older the specimen, the greater the proportion of lead-206 with respect to uranium-238.

He said the company's close rate — the proportion of leads that produce sales — is an industry best.

Comparing the proportion of leads that failed in our study with the literature gives the impression that we have unusually high rates of lead failure.

Such devices use laser and radiofrequency (RF) energy and novel cutting sheaths that have increased the proportion of leads completely removed compared with countertraction using non-powered or specialized sheaths.

In Marten van Heemskerck's The Virgin and Saint John the Evangelist (NG6508.1) (Fig. 6), mineral copper sulphate is present mixed with varying proportions of lead white for the undermodelling of Saint John's drapery, which has then been glazed with a deep green layer of verdigris.

Proportions of lead poisoning (B-Pb > = 10 μg/dL) were 8% among children with regular breakfast eating habit and 10% among those not eating breakfast regularly, but this difference is not statistically significant (chi-square test).