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Hace 13 horas · Madonna Louise Ciccone (/ tʃ ɪ ˈ k oʊ n i /; born August 16, 1958) is an American singer, songwriter, and actress.Nicknamed the "Queen of Pop", she has been recognized for her continual reinvention and versatility in music production, songwriting and visual presentation.Madonna's works, which incorporate social, political, sexual, and religious themes, have generated both controversy and ...
Hace 13 horas · Southwest Jiaotong University, China On 31 December 2000, the first crewed high-temperature superconducting maglev was tested successfully at Southwest Jiaotong University , Chengdu, China. This system is based on the principle that bulk high-temperature superconductors can be levitated stably above or below a permanent magnet.
