31. They replaced the commonly used YSZ electrolyte with a CGO ( cerium gadolinium oxide ) electrolyte. 32. The gadolinium ( III ) ion occurring in water-soluble salts is toxic to mammals. 33. Gadolinium -153 is produced in a nuclear reactor from elemental europium or enriched gadolinium targets.34. Gadolinium-153 is produced in a nuclear reactor from elemental europium or enriched gadolinium targets. 35. Gadolinium ) with neutron transmitting material.36. However, Gadolinium -148 cannot be economically synthesized in sufficient quantities to power a RTG. 37. Nanoparticles of gadolinium oxide is a potential contrast agent for magnetic resonance imaging ( MRI ). 38. In addition the ligand occupies only 8 of the 9 coordination sites on the gadolinium ion. 39. Other elements that are named after people include fermium, einsteinium, curium, and gadolinium . 40. The suitability of gadolinium complexes as magnetic resonance imaging contrast agents depends on a number of factors.