Sentence examples for dirt concentration from inspiring English sources

Sensors monitor dust levels on the panel's surface, energizing the coating when dirt concentration reaches a critical level.

A fixed quantity of air is drawn through a filter paper and the resulting smudge compared against a chart which shows the dirt concentration per cubic mile for smudges of similar densities.

Based on the fact that lead concentrations in the dirt were similar in city and rural yards at corresponding distances from the houses, it is clear that nearly all of the lead in dirt around these houses is due to paint from the houses.

The concentration of lead in dirt and househould dust was high enough to theoretically result in excessive lead accumulation in young children who are putting their dusty, dirty hands in their mouths during play.

The gas can collect at high concentrations in depressions in dirt or snow in that area, and can be dangerous to anyone breathing below ground or snow level, Mr. Farrar said.

Stops where road surface was loose dirt had significantly higher PM2.5 and PM10 concentrations, and those with broken paved surface had higher PM10 concentrations after adjustment for combustion sources; PM did not seem to vary with other road surface materials.

He was covered with mosquito bites bordering on impetigo; had lost so much weight that he looked like a concentration camp survivor; and was streaked with dirt like one of the lost boys in Peter Pan.

WHO ranks cities on their average daily concentration of PM 2.5, fine particles of dust, dirt, soot and smoke less than 2.5 micrometers in diameter.

The difficulty is finding it in sufficient concentrations and then shifting millions of tonnes of dirt to where it is needed.

Sources of high level exposure to lead are described; urban street dirt, house dust, and paint are particularly common sources of high concentrations of lead.

"Silicon is dirt cheap and the efficiency is pretty low, so it doesn't justify concentration.