Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Evelyn M Keaveney"'
Autor:
Paula J. Reimer, Evelyn M Keaveney, Marie-Therese Barrett, Niamh O'Neill-Munro, Paul Mullarkey, Gerard Barrett, Matthew Seaver
Publikováno v:
Journal of Cultural Heritage. 50:150-162
Preservatives and consolidants make it difficult or impossible to obtain accurate radiocarbon dates on many organic artefacts from museums or archaeological collections. Discovered in an Irish bog in the 1960s, the Cuillard Bowl is a triangular woode
Publikováno v:
Keaveney, E M, Barrett, G T, Allen, K & Reimer, P J 2021, ' A new ramped pyroxidation/combustion facility at 14 CHRONO, Belfast: setup description and initial results ', Radiocarbon, vol. 63, no. 4, pp. 1273-1286 . https://doi.org/10.1017/RDC.2021.46
The Belfast Ramped Pyroxidation/Combustion (RPO/RC) facility was established at the14CHRONO Centre (Queen’s University Belfast). The facility was created to provide targeted analysis of bulk material for refined chronological analysis and carbon so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1ecb588e9b87f6eb535ec3fa2d070b2
https://pure.qub.ac.uk/en/publications/efd3333f-8a51-40e6-8955-6ba11e243c47
https://pure.qub.ac.uk/en/publications/efd3333f-8a51-40e6-8955-6ba11e243c47
Sequestration of organic carbon in aquatic sediments can depend on its source and potential lability. Studies have shown that bulk lake and marine sediment comprises carbon of different origin but its source has been difficult to attribute. A new Ram
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55503d13552396d5f245826a9eb46b64
https://doi.org/10.5194/egusphere-egu21-12319
https://doi.org/10.5194/egusphere-egu21-12319
Publikováno v:
Keaveney, E M, Radbourne, A D, McGowan, S, Ryves, D B & Reimer, P J 2020, ' Source and quantity of carbon influence its sequestration in Rostherne Mere (UK) sediment: a novel application of Stepped Combustion Radiocarbon analysis ', Journal of Paleolimnology, vol. 64, pp. 347-363 . https://doi.org/10.1007/s10933-020-00141-1
Queen's University Belfast-PURE
Queen's University Belfast-PURE
We explored the roles of phytoplankton production, carbon source, and human activity on carbon accumulation in a eutrophic lake (Rostherne Mere, UK) to understand how changes in nutrient loading, algal community structure and catchment management can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8d9125ad3d3360612c5c8a574d1417a
https://pure.qub.ac.uk/en/publications/d50721bd-93d2-4bc3-9060-b73cb5d29f12
https://pure.qub.ac.uk/en/publications/d50721bd-93d2-4bc3-9060-b73cb5d29f12
Autor:
Evelyn M Keaveney, Åsa Ringbom, Gerard Barrett, Jesper V. Olsen, Colm Donnelly, Thomas Schrøder Daugbjerg, Paula J. Reimer, Alf Lindroos
Publikováno v:
Barrett, G T, Keaveney, E, Lindroos, A, Donnelly, C, Daugbjerg, T S, Ringbom, Å, Olsen, J & Reimer, P J 2021, ' Ramped pyroxidation : A new approach for radiocarbon dating of lime mortars ', Journal of Archaeological Science, vol. 129, 105366 . https://doi.org/10.1016/j.jas.2021.105366
Current methodologies for radiocarbon dating of mortars typically use mechanical and chemical separation to isolate fractions of carbon dioxide from suitable lime binder carbonates. These methods have a moderate frequency of success, but difficulties
Publikováno v:
Hannah, E L, McLaughlin, T R, Keaveney, E M & Hakenbeck, S E 2018, ' Anglo-Saxon diet in the Conversion period: A comparative isotopic study using carbon and nitrogen ', Journal of Archaeological Science Reports, vol. 19, pp. 24-34 . https://doi.org/10.1016/j.jasrep.2018.02.012
© 2018 Elsevier Ltd Seventh-century Anglo-Saxon England is characterised by great social and religious change. The arrival of missionaries from Rome in 597 CE initiated the gradual process of conversion to Christianity. There is growing evidence for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0ca9db92c440462236aa511d5bf447d
https://www.repository.cam.ac.uk/handle/1810/278710
https://www.repository.cam.ac.uk/handle/1810/278710
Autor:
Paula J. Reimer, Evelyn M Keaveney
Publikováno v:
Journal of Archaeological Science. 39:1306-1316
Freshwater resources in past diets can lead to inaccuracies when attempts are made to ascertain their radiocarbon ages or those of the consumers. Radiocarbon reservoir effects may lead to significant age offsets when the bones or other tissues of the
Publikováno v:
Keaveney, E M, Reimer, P J & Foy, R H 2015, ' Young, Old, and Weathered Carbon—Part 2: Using Radiocarbon and Stable Isotopes to Identify Terrestrial Carbon Support of the Food Web in an Alkaline, Humic Lake ', Radiocarbon Journal, vol. 57, no. 3, pp. 425-438 . https://doi.org/10.2458/azu_rc.57.18355
Carbon (C) and nitrogen (N) stable isotope analysis (SIA) has been used to identify the terrestrial subsidy of freshwater food webs. However, SIA fails to differentiate between the contributions of old and recently fixed terrestrial C and consequentl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28af7bad59b124d193fdea771f48dfcf
https://pure.qub.ac.uk/en/publications/6ccf1b6c-0317-4b7b-a245-cbe133e16940
https://pure.qub.ac.uk/en/publications/6ccf1b6c-0317-4b7b-a245-cbe133e16940
Autor:
Evelyn M Keaveney, Paula J. Reimer
Publikováno v:
Keaveney, E M & Reimer, P J 2015, ' Radiocarbon in the environment – An introduction ' Radiocarbon, vol 57, no. 3, pp. 3-4 .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b9a50c0adc9c4cc0ee26edbb7291a23
http://pure.qub.ac.uk/portal/en/publications/radiocarbon-in-the-environment--an-introduction(f34edccf-f9d3-4837-a239-04e1b6314b2e).html
http://pure.qub.ac.uk/portal/en/publications/radiocarbon-in-the-environment--an-introduction(f34edccf-f9d3-4837-a239-04e1b6314b2e).html
Publikováno v:
Keaveney, E M, Reimer, P J & Foy, R H 2015, ' Young, Old, and Weathered Carbon—Part 1: Using Radiocarbon and Stable Isotopes to Identify Carbon Sources in an Alkaline, Humic Lake ', Radiocarbon, vol. 57, no. 3, pp. 407-423 . https://doi.org/10.2458/azu_rc.57.18354, https://doi.org/10.2458/azu_rc.57.18354
This article presents a case study of Lower Lough Erne, a humic, alkaline lake in northwest Ireland, and uses the radiocarbon method to determine the source and age of carbon to establish whether terrestrial carbon is utilized by heterotrophic organi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59d0a2dc2ec739be724eda6b49893df1
https://pure.qub.ac.uk/en/publications/4e53efb8-f820-4bcb-829b-29444712c4c9
https://pure.qub.ac.uk/en/publications/4e53efb8-f820-4bcb-829b-29444712c4c9