Assertion: cerium | /r/HasProperty | retained by filter
Facets:
Source sentences:
text: Fortunately, the second part of the VERT study was very positive for the use of Eolys™ in combination with a variety of DPF's: not only were all the residues of the cerium retained by the filters, but the addition of Eolys™ to the fuel significantly improved (by nearly one order of magnitude) the filtration efficiency of PM of diameter smaller than 100 nm.