Sentences with phrase «ultrafine particulate»

Recent studies identify black carbon, a component of ultrafine particulate air pollution, as a critical climate warming agent both in the atmosphere and when deposited on snow and ice.

Levels of ultrafine particulate matter in the atmosphere are neither monitored nor regulated by environmental agencies not only in Brazil but practically anywhere in the world, according to Artaxo.

However, the health of the entire population pays a high price: substitution of gasoline for ethanol leads to a 30 % increase in the atmospheric concentration of ultrafine particulate matter, which consists of particles with a diameter of less than 50 nanometers (nm).

Several US states, such as California, have laws requiring a 20 % -30 % ethanol blend in gasoline, which also helps reduce emissions of ultrafine particulate matter.

Levels of ultrafine particulate matter in the atmosphere are neither monitored nor regulated by environmental agencies not only in Brazil but practically anywhere in the world, Artaxo stressed.

The map shows high levels of ultrafine particulates in the west side near the Peace Bridge completed by Harvard researchers who did the Health Effects Institute Study at the bridge in 2005 and 2006.

Not exact matches

These are designed to trap and oxidise potentially harmful ultrafine - particulate tail - pipe emissions.

Retune jet aircraft engines to generate ultrafine soot instead of the low - particulate exhaust normally desired.