Marie Curie theory of "radioactivity" (a term that she coined), techniques for isolating radioactive isotopes, and the discovery of two elements, polonium and radium. Under her direction, the world's first studies into the treatment of neoplasms were conducted using radioactive isotopes. She founded the Curie Institutes in Paris and in Warsaw, which remain major centres of medical research today. During World War I, she developed mobile radiography units to provide X-ray services to field hospitals. While a French citizen, Marie Skłodowska Curie, who used both surnames, never lost her sense of Polish identity. She taught her daughters the Polish language and took
Pierre and Marie Curie University Latin Quarter, as part of an intellectual and spiritual continuum linked to the university history of Paris. Paris 6 shared the Jussieu campus with the University of Paris 7 (Paris Diderot University) and the Paris Geophysical Institute ("Institut de Physique du Globe"). In 1974, the University of Paris VI adopted the name Université Pierre et Marie Curie, after physicists Pierre and Marie Curie. In 2006, Pierre and Marie Curie University entered into a partnership with the government of the United Arab Emirates to create Paris-Sorbonne University Abu Dhabi, a spinoff in Abu Dhabi. In 2007, the university shortened its name