| http://www.w3.org/ns/prov#value | - The batch in accordance with the invention preferably contains nanoscale particles, whether one is dealing with an oxide, oxide hydrate, calcogenide, nitride, or carbide of Si, Al, B, Zn, Zr, Cd, Ti, Ce, Sn, In, La, Fe, Cu, Ta, Nb, V, Mo or W, especially preferred of Si, Zr, Al, B, W and Ti.
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