Results 51 to 60 of about 110,749 (288)

Monaco Radiocarbon Measurements II [PDF]

open access: yesRadiocarbon, 1966
This series reports some of the measurements made since publication of the previous list. Chemical preparation of samples is basically the same as described in Monaco I.The counting electronics of the proportional counter has been entirely rebuilt by J. Galliot and P. Albertinoli of C.S.M. The new device is transistorized and battery-operated.
J. Thommeret, Y. Thommeret
openaire   +3 more sources

Early Neolithic population dynamics in the Eastern Balkans and the Great Hungarian Plain

open access: yesDocumenta Praehistorica, 2017
In this study, we reconstruct population dynamics in the Early Neolithic of the Eastern Balkans and the Great Hungarian Plain using frequency of radiocarbon dates as a population proxy.
Tamara Blagojević   +3 more
doaj   +1 more source

Towards a radiocarbon chronology of the Late-Glacial: Sample selection strategies [PDF]

open access: yes, 2001
This paper outlines a dating program designed to test the reproducibility of radiocarbon dates on different materials of Late-Glacial age (plant macrofossils, fossil beetle remains, and the "humic" and "humin" chemical fractions of limnic sediments ...
Bengtsson   +14 more
core   +1 more source

Gif Natural Radiocarbon Measurements VII [PDF]

open access: yesRadiocarbon, 1966
C14 dates reported below were obtained mainly at the end of 1968 and during 1969 on archaeologic and geologic samples. Techniques of measurement used are unchanged. Since 1968, 4 complete routine sets have been running, each equipped with a 1 L CO2 proportional counter.
Delibrias, G., Nakhla, S., Labeyrie, J.
openaire   +16 more sources

Reconstructing past fossil-fuel CO2 concentrations using tree rings and radiocarbon in the urban area of Medellín, Colombia

open access: yesEnvironmental Research Letters, 2022
To meet international and national commitments to decrease emissions of fossil fuels, cities around the world must obtain information on their historical levels of emissions, identifying hotspots that require special attention.
Marileny Vásquez   +3 more
doaj   +1 more source

Berlin Radiocarbon Measurements I [PDF]

open access: yesRadiocarbon, 1964
The C14Laboratory of the German Academy of Sciences of Berlin (DAW) began to obtain dates in 1961. The focus of research is in archaeology. Samples, coll. in close collaboration with the DAW's Institut für Vor- und Frühgeschichte, are mainly from the Neolithic of central and southeastern Europe, and contribute to the continuing discussion (Milojčić ...
G. Kohl, H. Quitta
openaire   +3 more sources

Revised calendar date for the Taupo eruption derived by ¹⁴C wiggle-matching using a New Zealand kauri ¹⁴C calibration data set [PDF]

open access: yes, 2011
Taupo volcano in central North Island, New Zealand, is the most frequently active and productive rhyolite volcano on Earth. Its latest explosive activity about 1800 years ago generated the spectacular Taupo eruption, the most violent eruption known in ...
Boswijk, Gretel   +4 more
core   +2 more sources

Florence Radiocarbon Dates I [PDF]

open access: yesRadiocarbon, 1973
The Florence Radiocarbon Dating Laboratory was built in 1970 under the direction of Consiglio Nazionale delle Ricerche at the Istituto di Antropologia, Università di Firenze.
C. M. Azzi, L. Bigliocca, E. Piovan
openaire   +4 more sources

Incorporation of Deepwater Horizon oil in a terrestrial bird

open access: yesEnvironmental Research Letters, 2016
Carbon isotopic evidence revealed Deepwater Horizon (DWH) oil entering coastal planktonic and lower terrestrial food webs. The integration of spilled oil into higher terrestrial trophic levels, however, remains uncertain. We measured radiocarbon ( ^14 C)
A Bonisoli-Alquati   +4 more
doaj   +1 more source

Carbon Isotope Measurements to Determine the Turnover of Soil Organic Matter Fractions in a Temperate Forest Soil

open access: yesAgronomy, 2020
Soil organic matter (SOM) is a combination of materials having different origin and with different stabilization and decomposition processes. To determine the different SOM pools and their turnover rates, a silt loam-textured Luvisol from West Hungary ...
Dóra Zacháry   +8 more
doaj   +1 more source

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