Table 1 Particle size-specific dimensionless shape factors for the investigated dairy cows dust
Size fraction (μm) | Shape factor (κ) (mean ± standard deviation) | Variance | Standard error |
|---|---|---|---|
> 2.0–≤ 3.0 | 1.09 ± 0.09 | 0.06 | 0.05 |
3.0–≤ 4.0 | 1.06 ± 0.05 | 0.05 | 0.02 |
4.0–≤ 5.0 | 1.06 ± 0.05 | 0.02 | 0.01 |
5.0–≤ 7.5 | 1.10 ± 0.09 | 0.06 | 0.01 |
7.5–≤ 10.0 | 1.17 ± 0.15 | 0.06 | 0.01 |
10.0–≤ 15.0 | 1.25 ± 0.23 | 0.05 | 0.01 |
15.0–≤ 20.0 | 1.40 ± 0.31 | 0.40 | 0.04 |
˃ 20.0 | 1.67 ± 0.42 | 0.28 | 0.02 |