Douglas Libby

Parasitárias: guia de Bolso. 3.ed. Brasília, 2004. HARRISONS principles os Internal Medicine. 15. ed. São Paulo: McGraw-Hill, 2001. HUMES, D. H. (Ed). Kelley’s textbook of internal medicine. 4. ed. [S.l.]: Lippincott William and Wilkins, 2000. MANDELL, Douglas, E.; BENETT’S. Principles and practice of infectious diseases. 5. ed. [S.l.]: Churchill Livingstone 2000. MARQUES, A. C.; CÁRDENAS, H. Combate à malária no Brasil: evolução, situação atual e perspectivas. Revista da Sociedade…

Willard Libby (1908–1980) in the early 1950s and resulted in his winning the Nobel prize for chemistry in 1960. Radiocarbon dating is based on the fact that some wood or plant remains contain residual amounts of carbon-14, a radioactive isotope of carbon. This isotope is accumulated during the lifetime of the plant and begins to decay at its death. Since the half-life of carbon-14 is long (approximately 5730 years1), measurable amounts of carbon-14 remain after many thousands of…