Sentence examples for proportion of dust from inspiring English sources

So, they could identify any changes in precipitation by the proportion of dust grains to sediment grains more airborne dust means less precipitation, whereas more runoff grains mean more rain.

The proportion of dust in the rings (between 20% and 70%) is high, while their optical depth is low to moderate, at less than 0.1.

The HVS3 sample was collected in all of the rooms in which the household vacuum had been used, adjusting the HVS3 square footage in each room to reflect the frequency with which that room had been vacuumed by the homeowner; we did this to ensure that the HVS3 and used bag samples were composed of similar proportions of dust from each room.

The high proportion of road dust in sub-arctic regions of the world has been linked to the snowy winter conditions that make it necessary to use traction-control methods.

Thus, for the cleaners, a considerably larger proportion of the dust by mass is expected to be deposited in the upper part of the airways than is the case for the production workers.

Alternatively, the fiber particles from persistent long-term, lower-level exposure from fugitive plant emissions, although correlated with the activity-based exposure, may be sufficiently different from the exposures in the waste rock that a greater proportion of the dust is deposited in the lower reaches of the respiratory tract.

A certain proportion of combustible aluminum dust was mixed with different granular sodium bicarbonate powder with single-diameter particle or different granulometric distribution.

The mean proportion of Salmonella positive dust samples was around 34% with a range from 12 to 62%.

The proportion of variance in dust hopanes concentrations explained by LUR NO2 was less than 10% in Vancouver, Winnipeg and Toronto while the correlations in Edmonton and Windsor explained 20 to 40% of the variance.

Silica dust is a proportion of the total measured respirable fine dust and therefore highly correlated with fine dust exposure (r>0.95).

It is also possible that, as mine shafts became deeper, the surface properties and hence the toxicity of the dust increased, or there may have been an increase in the proportion of freshly fractured silica dust.