Results 61 to 70 of about 158,813 (385)

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

Talking About My Generation: the Date of the West Kennet Long Barrow [PDF]

open access: yes, 2007
Thirty-one radiocarbon results are now available from the West Kennet long barrow, and are presented within an interpretive Bayesian statistical framework.
Bayliss, A   +2 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

Variations of radiocarbon in tree rings: southern hemisphere offset preliminary results [PDF]

open access: yes, 1998
The Queen's University of Belfast, Northern Ireland and University of Waikato, Hamilton, New Zealand radiocarbon laboratories have undertaken a series of high-precision measurements on decadal samples of dendrochronologically dated oak (Quercus patrea ...
Baillie, Mike G.L.   +8 more
core   +4 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

Mussels with Meat: Bivalve Tissue-Shell Radiocarbon Age Differences and Archaeological Implications [PDF]

open access: yes, 2012
Local reservoir ages are often estimated from the difference between the radiocarbon ages of aquatic material and associated terrestrial samples for which no reservoir effect is expected.
Coblenz   +13 more
core   +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

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

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

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