The glass particles slowed or curtailed yeast growth as a function of increasing particle concentration.

Sparks attributed the poor sorting in ignimbrites to laminar flows of very high particle concentration.

For that reason, zero particle concentration does not exist.

Associations between 1980 U.S. mortality rates and alternative measures of airborne particle concentration.

Particularly for larger particles and those with high refractive index contrast, this limits the application of standard static light scattering to very low particle concentrations.

At higher particle concentrations, the growing clusters may interlink, and form a particle gel.

In the early 1980s it was found that it was advantageous to decrease the particle concentration down to levels where individual particles could be observed.

Measurements such as, pressure field, energy budgets, vertical particle concentration and accurate deposit heights are a few to mention.

However, they will tend to plug or corrode if particle concentration of the exhaust gas stream is high.

If you get a step change in the particle concentrations, then the butanol may have been bad.