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22 de may. de 2024 · The ORNL-led team of scientists prepared a chemical complex of promethium, which enabled its characterization in solution for the first time. Thus, they exposed the secrets of this extremely rare lanthanide, whose atomic number is 61, in a series of meticulous experiments. “The whole idea was to explore this very rare element to gain new ...
Hace 13 horas · La Sinfónica de Sevilla contará con Juan Floristán, Pablo Ferrández y Pacho Flores en su temporada 24-25
23 de may. de 2024 · Maurice Ravel, French composer of Swiss-Basque descent, noted for his musical craftsmanship and perfection of form and style in such works as Bolero (1928), Pavane pour une infante defunte (1899; Pavane for a Dead Princess), and Rapsodie espagnole (1907).
Hace 2 días · Oak Ridge National Lab scientists have made new promethium discoveries that may rewrite the rare earths section of chemistry textbooks. A team of scientists at the U.S. Department of Energy's Oak Ridge National Laboratory has begun to unlock the secrets of promethium, the one rare earth that is as scarce as the name of this group of elements sugges...
22 de may. de 2024 · Sep. 29, 2022 —. Feb. 6, 2021 —. Aug. 5, 2020 —. Scientists have uncovered the properties of a rare earth element that was first discovered 80 years ago at the very same laboratory, opening ...
Hace 13 horas · Sandra Rody et Daphné Widmer défendent le répertoire pour piano à 4 mains. Leur prochain concert passe par Le Phénix vendredi, avec deux créations à la clé.
22 de may. de 2024 · Abstract. Lanthanide rare earth metals are ubiquitous in modern technologies, but we know little about chemistry of the 61st element, promethium (Pm), a lanthanide which is highly radioactive and inaccessible. Despite its significance, Pm has conspicuously been absent from the experimental studies of lanthanides, impeding our full comprehension ...
