Zobrazeno 1 - 10
of 127
pro vyhledávání: '"M. di Tada"'
Autor:
P.B. Beaumont, L.K. Fifield, M. di Tada, Michael I. Bird, Paul Hausladen, Guaciara M. Santos, Y. Zhou
Publikováno v:
Quaternary Science Reviews. 22:943-947
We present 21 radiocarbon dates on 19 charcoal samples from the sedimentary sequence preserved in Border Cave, South Africa. The background radiocarbon activity for charcoal from the cave was determined to be 0.050±0.018 percent modern carbon, from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1eceaf260cf870332bb6c41247614621
https://doi.org/10.1016/s0277-3791(03)00005-2
https://doi.org/10.1016/s0277-3791(03)00005-2
Publikováno v:
Scopus-Elsevier
Long-lived cosmogenic radioisotopes, 10Be, 26Al, 36Cl, 41Ca and 59Ni, have been measured in five samples from the Campo del Cielo iron meteorite by accelerator mass spectrometry (AMS). The 36Cl activities were significantly above the background. For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::216f16d661d2f9cc9543f1969ddf0087
https://doi.org/10.1111/j.1945-5100.2002.tb01111.x
https://doi.org/10.1111/j.1945-5100.2002.tb01111.x
Autor:
M. di Tada, Chris S. M. Turney, Michael I. Bird, Paul Hausladen, Guaciara M. Santos, L.K. Fifield
Publikováno v:
Radiocarbon. 43:1139-1145
Charcoal samples from ancient human occupation sites in Australia have been subjected to a rigorous pretreatment and stepped combustion regime in order to explore the possibility that these sites may be older than previous radiocarbon dating had sugg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4ffa2fc894119a58aaf4969cf77c6420
https://doi.org/10.1017/s0033822200041795
https://doi.org/10.1017/s0033822200041795
Autor:
L. M. Di Tada, Pavel P. Povinec, Sang-Han Lee, Janine Gastaud, Paul Hausladen, Eric Wyse, L. Liong Wee Kwong, J. La Rosa, Guaciara M. Santos, L.K. Fifield
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 248:757-764
IAEA reference materials (radionuclides in the marine environment) collected in areas affected by nuclear reprocessing plants and nuclear weapons tests have been analysed by semiconductor alpha-spectrometry (SAS), liquid scintillation spectrometry (L
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b45756ec4a543bec261d35e7a59bc0ad
https://doi.org/10.1023/a:1010609215926
https://doi.org/10.1023/a:1010609215926
Autor:
R. G. Cresswell, Paul Hausladen, M. di Tada, Michael I. Bird, Christian Turney, Guaciara M. Santos, Z Youping, Arnold Peter Kershaw, L.K. Fifield
Publikováno v:
Radiocarbon. 43:45-54
Lynch's Crater in northeastern Australia provides a long, continuous record of environmental change within the Late Quaternary. Here, we present newly determined radiocarbon ages, using acid-base-acid stepped combustion (ABA-SC) and acid-base-wet oxi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac4f8ea41b78ccdfacedda818f2716a0
https://doi.org/10.1017/s0033822200031611
https://doi.org/10.1017/s0033822200031611
Autor:
M. di Tada, R. G. Cresswell, Patrick Moss, Arnold Peter Kershaw, Y. Zhou, Paul Hausladen, Michael I. Bird, L.K. Fifield, Christian Turney, Guaciara M. Santos
Publikováno v:
Journal of Quaternary Science. 16:767-771
Lynch's Crater preserves a continuous, high-resolution record of environmental changes in north Queensland. This record suggests a marked increase in burning that appears to be independent of any known major climatic boundaries. This increase is acco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c92b7167e9bd7d46dc68e5a5eba3c95
https://doi.org/10.1002/jqs.643
https://doi.org/10.1002/jqs.643
Autor:
D. Abriola, A. J. Pacheco, J. E. Testoni, D.E. Alvarez, O. A. Capurro, J. O. Fernández Niello, G. V. Martí, A.M.J. Ferrero, R. G. Liberman, E. Achterberg, M. di Tada, M. Ramírez
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 172:91-94
Several aspects of the AMS program at the TANDAR laboratory are discussed. The current activities are focused on environmental and cosmological applications. One of the projects has been the study of the global fallout of the radioisotope 36Cl and it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71cc63d4874f350f1a2f347ba0cf11c8
https://doi.org/10.1016/s0168-583x(00)00219-6
https://doi.org/10.1016/s0168-583x(00)00219-6
Autor:
R. G. Cresswell, Roberto Meigikos dos Anjos, Bruno Turcq, L.K. Fifield, P. R. S. Gomes, M. di Tada, A. Sifeddine, Renato Campello Cordeiro, Guaciara M. Santos
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 172:761-766
Soil samples were collected in tierra firme upland and lowland areas of the Km 41 reserve near Manaus (20°30′S and 60°W), in Central Brazilian Amazon, within a 1700 m transect, at eight different depth ranges, from surface to 100 cm. The highest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c508a05b3e3ea59368301818da2e9280
https://doi.org/10.1016/s0168-583x(00)00234-2
https://doi.org/10.1016/s0168-583x(00)00234-2
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 168:427-436
The measurement of low levels of 99Tc (T 1/2 =213 ka ) by accelerator mass spectrometry (AMS) is reported for the first time. Because there are no stable isotopes of technetium, the 99Tc content of a sample is determined from the ratio of 99Tc to a k
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::260c71e271db8174b002d323159797dd
https://doi.org/10.1016/s0168-583x(99)01094-0
https://doi.org/10.1016/s0168-583x(99)01094-0
Autor:
C. Schnabel, Elisabetta Pierazzo, M. di Tada, Jozef Masarik, K. Liu, Gregory F. Herzog, S. Xue, R. G. Cresswell, L.K. Fifield
Publikováno v:
Science. 285:85-88
Two main types of material survive from the Canyon Diablo impactor, which produced Meteor Crater in Arizona: iron meteorites, which did not melt during the impact; and spheroids, which did. Ultrasensitive measurements using accelerator mass spectrome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fe934febf3952caa87ce221d40d92b7
https://doi.org/10.1126/science.285.5424.85
https://doi.org/10.1126/science.285.5424.85