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“I discovered that we could use this property to perform radiation dosimetry and began using the method in archeological dating,” Mascarenhas recalled.His aim at the time was to calculate the age of bones found in sambaquis (middens created by Brazil’s original inhabitants as mounds of shellfish debris, skeletons of prehistoric animals, human bones, stone or bone utensils, and other refuse) based on the natural radiation absorbed over centuries via contact with elements such as thorium that are present in the sand on the seashore.In an article published in PLOS ONE, Brazilian researchers describe the first retrospective dosimetric study by electron spin resonance spectroscopy using human tissue from nuclear attack victims (photo: release) By Karina Toledo | Agência FAPESP – The bombing of the Japanese cities Hiroshima and Nagasaki by the United States in 1945 was the first and only use of nuclear weapons against civilian targets.A series of studies began in its aftermath to measure the impact of the fallout, in terms of both the radiation dose to which the victims were exposed and the effects of this exposure on DNA and health in general.The IBM strategic repository for digital assets such as images and videos is located at com.This repository is populated with tens of thousands of assets and should be your first stop for asset selection.U gaat akkoord met dit cookiegebruik door hieronder op “akkoord” te klikken of door verder gebruik te blijven maken van MSN.com/nl-nl.

“I needed to prove experimentally that my discovery was genuine.” Mascarenhas succeeded in demonstrating that a dosimetric signal could be obtained from the sample even though the technology was still rudimentary and there were no computers to help process the results.Currently, there’s renewed interest in this kind of methodology due to the risk of terrorist attacks in countries like the United States,” Baffa told Agência FAPESP.“Imagine someone in New York planting an ordinary bomb with a small amount of radioactive material stuck to the explosive.Op MSN.com/nl-nl gebruiken wij (Microsoft) functionele en analytische cookies en vergelijkbare technologieën (alle aangeduid als cookies) om u een optimale gebruikerservaring te bieden.Bovendien gebruiken wij en andere (derde) partijen tracking cookies om internetgedrag te volgen en daardoor een gepersonaliseerde ervaring te bieden en gepersonaliseerde advertenties te tonen.

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