Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Maurice Ndeye"'
Publikováno v:
Pensées Genre, Penser Autrement, Vol 1, Iss 2, Pp 1-19 (2022)
L’objectif de cet article est de réviser la classification chronoculturelle du site archéologique de Dioron Boumak (Delta du Saloum/Sénégal) fondée sur la culture matérielle céramique et les dates, en âge BP, en particulier, recueillies e
Externí odkaz:
https://doaj.org/article/2594b3e90e584eb5ad5c4fa61086272e
Publikováno v:
Radiocarbon. 64:397-414
New radiocarbon (14C) dates we obtained in our radiocarbon laboratory equipped with a liquid scintillation counter using BGO (Bi4Ge3012) tubes. The electronic stability of the counter gave a background below 0.2 cpm. Our 14C dates agree well with the
Autor:
Adams Tidjani, Coumba Thiandoume, Ousmane Ndour, Papa Mbaye Diouf, Ababacar Sadikhe Ndao, Xavier Cagnat, Alassane Traore, Maurice Ndeye
Publikováno v:
Environmental Forensics. :1-8
Publikováno v:
Atmospheric and Climate Sciences. 11:114-124
Mass balance equations can be used to quantify the level of fossil carbon dioxide (CO2)ff at a given site by using samples of tree leaves or tree rings. These sites are often densely populated and highly industrialized areas. In this case, in additio
Publikováno v:
Geochronometria. 48:16-30
The prehistoric settlement of the west coast of the Senegalese-Mauritanian basin is established from archaeological remains and coal samples collected, sometimes in a stratigraphic context. However, the chronology issued, in the Before Present (BP) a
Publikováno v:
Open Journal of Air Pollution, 11 (1)
Radiocarbon content in biogenic samples is widely used to study the variation of atmospheric CO2 due to anthropogenic activities. A total of 20 samples of several types of tree leaves, were analyzed for this study. Sampling was carried out at the end
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a256796814e43fbc8a842871f060816
https://hdl.handle.net/20.500.11850/577744
https://hdl.handle.net/20.500.11850/577744
Long used in the domain of archaeology, the C14 isotope has become an essential tracer in the evaluation of environmental fossil pollution. Since modern times, the combustion of fossil fuels such as coal, oil, natural gas, etc. in urban and/or indust
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::91d853b180576d8b72c473ae4295e7a5
Autor:
Coumba Thiandoume, Maurice Ndeye, Adams Tidjani, Alassane Traore, Ousmane Ndour, Ababacar Sadikhe Ndao, Xavier Cagnat, Papa Mbaye Diouf
Publikováno v:
SN Applied Sciences. 2
In this study, the activity concentrations of 226Ra, 232Th and 40K in twenty cement samples of four types (CEM, CEM II, CEM III, and CEM IV) collected from building material suppliers in Senegal were measured using a low-background digital gamma-ray
Publikováno v:
Journal de Physique de la SOAPHYS. 2:C20A18-1
Le comportement de notre environnement dépend de l’équilibre radiatif de son atmosphère et donc, de l’abondance des polluants comme les gaz à effet de serre. Ces gaz anthropogéniques sont dus, en grande partie, aux activités de l’homme de
Publikováno v:
Radiocarbon
Radiocarbon, University of Arizona, 2017, 59 (03), pp.1009-1019. ⟨10.1017/rdc.2017.48⟩
Radiocarbon, 2017, 59 (03), pp.1009-1019. ⟨10.1017/rdc.2017.48⟩
Radiocarbon, University of Arizona, 2017, 59 (03), pp.1009-1019. ⟨10.1017/rdc.2017.48⟩
Radiocarbon, 2017, 59 (03), pp.1009-1019. ⟨10.1017/rdc.2017.48⟩
Radiocarbon (14C) in atmospheric CO2for the Dakar (Senegal) urban area was measured using tree leaves collected by botanists from 1900 to 2003. The aim of our study was to compare the local Suess effect in Dakar to the global one during the 20th cent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1f29fe5726444c1a0acf70dd964303e
https://hal.archives-ouvertes.fr/hal-01833184
https://hal.archives-ouvertes.fr/hal-01833184