… pyramids (CaN5; shown in green in the image) and octahedra (NCa5Ni; shown in blue in the image), respectively. The … for the next three years. CoreTrustSeal is a non-profit organization that promotes sustainable and trustworthy … and sustainable by the Core Trust Seal," says Prof. Dr. Wolfram Horstmann, President & CEO of FIZ Karlsruhe. …