Sentence examples for levels of acid from inspiring English sources

He struggled to find the right ink: seventeenth-century inks contained high levels of acid.

Causes of refractory symptoms include "functional" heartburn, bile acid reflux, and a hypersensitive esophageal mucosa that registers symptoms at low levels of acid exposure.

Salt and vinegar crisps are also among problem foods containing high levels of acid that can wear away teeth, a team from King's College London has said.

Results: Forty-four percent (74/167) of the study patients demonstrated abnormal levels of acid exposure.

The yield of alkali-soluble lignin increased at higher levels of acid impregnation and pretreatment temperatures.

But the study said the public health benefits, including reduced rates of cancer, asthma and other diseases, along with gains from lower levels of acid rain, would easily justify the cost.

In a long-term study begun in 1976 by the Harvard School of Public Health, children in six cities with varying levels of acid-particle pollution have been monitored annually for respiratory function.

Subaqueous soils on landscapes with >60% eelgrass cover had relatively high levels of acid-volatile sulfides (>90 μg/g), high soil salinity levels (34 44 ppt), fine textures (silt loam), and relatively high total nitrogen levels (>0.15%).

Excessive levels of acids, total suspended solids (TSS) and organic carbon were also found.

The levels of acid-extractable insulin-like growth factor-I in tendon were determined by competitive radioimmunoassay as 1.48+/-0.05 ng/g tissue for the epitenon and 3.83+/-0.03 ng/g tissue for the internal compartment.

The coal companies have made only the most meager efforts to reclaim this devastated land by planting quick-growth pine trees, black locust, grass seed, and other plants that can live with high levels of acids in the soil.