Ostwald ripening or coalescence , or the coalescence of the internal mesocrystalline domains . Due to the shape of the crystals and their alignment, B evolves independently for the two integration directions. The proportional to the product of the volume fraction and the volume of smaller particles; R s is the gyration radius of small structural units. In addition, Fig. shows trends in B s and bkg parameters, which are not included in Fig. . These two sets of values affect the region in which small-angle scattering transitions into the wide-angles and the atomic-level structure. They contribute mostly to a relatively narrow part of the scattering curve, where uncertainties are high (see B s -dependent component in Fig. ), which makes them less representative or suitable for interpretation.