Domingo Liotta Author of the Law 20748, The National System of Public Health. 1991-94: Surgeon-in-Chief, Cardiovascular Clinic Institute, Buenos Aires, Argentina. 1994-96: Secretary of State for Science and Technology and President of the National Council of Scientific and Technological Research (CONICET), Argentina. 1997–present: Dean of the School of Medicine, University of Morón, Argentina Member of numerous Medical Societies around the world. Owner of 12 patent inventions in USA, Argentina and France. Author of hundreds of scientific publications and scientific books. Author of medical humanism books in English and Spanish. Recently published his autobiography,"Amazing Adventures of a Heart Surgeon. The Artificial Heart: The
MD Helicopters MD 500 MD Helicopters MD 500 The MD Helicopters MD 500 series is an American family of light utility civilian and military helicopters. The MD 500 was developed from the Hughes 500, a civilian version of the US Army's OH-6A Cayuse/Loach. The series currently includes the MD 500E, MD 520N, and MD 530F. The successful Hughes 500/MD 500 series began life in response to a U.S. Army requirement for a Light Observation Helicopter (LOH). Hughes' Model 369 won the contest against competition from Bell and Hiller. The subsequent OH-6 Cayuse first flew in February 1963. The 500 series design features shock-absorbing landing