When the ice ages were at their zenith, so was the amount of atmospheric dust, according to the calculations.
In addition, a hybrid model used results which are compared with emission calculations of dust pollution based on a Gaussian model, including various methods of calculation of pollution dispersion coefficients.
The researchers' calculations place the dust in a ring 2.5 astronomical units from Zeta Lep.
Any study of astrophysical and laboratory dusty plasmas takes into consideration the calculation of individual dust grain charge when part of a dust cloud.
The calculation of individual dust grain charges in a dust cloud with a size distribution is a challenging one, especially under sufficiently dense cloud conditions and moderately high plasma temperatures when secondary electron currents become significant.
Figure 6 shows the effect of different settings of the calculation on the dust photoelectric heating rate: (a) various intensities of the background radiation and (b) various temperatures of the gas.
Their calculations showed that the dust does vary in time with the ice ages, but it does so because of a different orbital cycle: regular changes in the orbit's shape.
However, variability in dust intake estimates (U.S. Environmental Protection Agency 1997) renders calculation of PBDE intake via this pathway less certain.
Not only that, but the usual promises of ubiquitous computing also apply: this smart dust could be all over the place, doing little calculations, sensing conditions, connecting with other motes and the internet to allow… well, use your imagination.
The PFOS and PFOA concentrations of air and dust that were used as basis for calculation, as well as the LADD values, are shown in Table 10.
Nevertheless, we assume the polarization-independent form of Eq. (1) for simplicity, though the light scattering calculations are implemented assuming non-spherical dust shapes.
