Titlebook: Radiocarbon After Four Decades; An Interdisciplinary R. E. Taylor,Austin Long,Renee S. Kra Conference proceedings 1992 Springer Science+Bus

勉励

Cosmogenic , Radiocarbon on the Earthms .C, thereby allowing its measurement in samples of ~ 0.1 mg carbon from the dynamic reservoirs. This advance makes it possible, for example, to date bones by measuring .C in proteins (Hedges & Law 1989) and in individual species of planktonic and benthic calcareous shells deposited in the sediments (Andrée . 1986).

Inculcate

Four Decades of Progress in 14C Dating by Liquid Scintillation Counting and Spectrometryr of the Packard Instrument Company, USA and then by many others in the USA and Europe. Though efficient and technologically advanced for their times, the early counters had very high backgrounds and, hence, offered poor resolution of radioactive isotopes at environmental concentrations.

滑稽

单调女

Conference proceedings 1992foundation in the essential topics of radiocarbon dating: Historical Perspectives; The Natural Carbon Cycle; Instrumentation and Sample Preparation; Hydrology; Old World Archaeology; New World Archaeology; Earth Sciences; and Biomedical Applications.

Substance

e a solid foundation in the essential topics of radiocarbon dating: Historical Perspectives; The Natural Carbon Cycle; Instrumentation and Sample Preparation; Hydrology; Old World Archaeology; New World Archaeology; Earth Sciences; and Biomedical Applications.978-1-4757-4251-0978-1-4757-4249-7

Femine

exercise

DOSE

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发现

Jean-Claude Duplessy,Maurice Arnold,Edouard Bard,Laurent Labeyrie,Josette Duprat,Jean Moyes.