SMM Behavior Tuned by an Exchange Coupling LEGO Approach for Chimeric Compounds: First 2p–3d–4f Heterotrispin Complexes with Different Metal Ions Bridged by One Aminoxyl Group Highly Selective Removal of Pb(II) by a Pyridylpyrazole-β-ketoenol Receptor Covalently Bonded onto the Silica Surface Mini guide to Bucharest, Romania Legacy and Sustainability of the ECoCs – Cultural Management Academy 2023 Sip by sip: Ten Bucharest tea houses for a relaxing time