Results 231 to 240 of about 10,153 (261)
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Radiocarbon dating in trondheim
Applied Scientific Research, 1957Naturally occurring radiocarbon is registered in a proportional counter filled with pure CO2. The CO2 gas is purified in almost the same manner as has been developed by De Vries and Barendsen. Checking of the gas purity is described. A grid proportional counter with an effective volume of about 2.5 liter has been used with CO2-pressures from 1 to 4 ...
R. Nydal, R. S. Sigmond
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Nature, 1970
CONFLICTING reports have been published in recent years on the reliability of radiocarbon dating of mortars. Delibrias and Labeyrie1 found accurate dating to be possible, but Stuiver and Smith2 found incorrect age assessments. The observed discrepancies were attributed to the dilution of 14C activity by ancient carbon which may have been a residue of ...
M S, Baxter, A, Walton
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CONFLICTING reports have been published in recent years on the reliability of radiocarbon dating of mortars. Delibrias and Labeyrie1 found accurate dating to be possible, but Stuiver and Smith2 found incorrect age assessments. The observed discrepancies were attributed to the dilution of 14C activity by ancient carbon which may have been a residue of ...
M S, Baxter, A, Walton
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Preparation for Radiocarbon Analysis
2016This chapter presents an overview of the steps required to prepare a sample for radiocarbon (14C) measurement by accelerator mass spectrometry (AMS). These include: (1) collection of an appropriate sample that can answer the question being asked; (2) pretreatment of samples to isolate a the most representative fraction of the bulk carbon (C) or to ...
Trumbore, S. +9 more
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Hadashot Arkheologiyot - Excavations and Surveys in Israel, 2013
In January 2010, a salvage excavation was conducted in Nahal Hed, west of the Ramat Hovav Industrial Area (Permit No. A-5803; map ref. 175218-433/561015-440). The excavation undertaken on behalf of the Israel Antiquities Authority and funded by the Israel Bromide CompoundsCompany,
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In January 2010, a salvage excavation was conducted in Nahal Hed, west of the Ramat Hovav Industrial Area (Permit No. A-5803; map ref. 175218-433/561015-440). The excavation undertaken on behalf of the Israel Antiquities Authority and funded by the Israel Bromide CompoundsCompany,
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RADIOCARBON DATING | Conventional Method
2007Radiometric analysis of carbon-14 (14C) by liquid scintillation counting (LSC) and gas proportional counting (GPC) is reviewed. Typical sample size requirements are discussed, together with the conversion of sample carbon to an appropriate product for the measurement of the β-particles emitted during 14C decay; in the case of LSC, it is benzene (C6H6 ...
Cook, C.T, van der Plicht, J.
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Science, 1954
These cover the period Sept. 1, 1952 -- Sept. 1, 1953; Mesopotamia and Western Asia-6, United States-23, Central America-1, other areas-2.
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These cover the period Sept. 1, 1952 -- Sept. 1, 1953; Mesopotamia and Western Asia-6, United States-23, Central America-1, other areas-2.
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Radiocarbon dating of paper and parchment in the Zagreb Radiocarbon Laboratory
2020Radiocarbon (14C) dating of objects of cultural heritage and art is essential for valuation of original objects of arts and for differentiation between the original works and later reparation and restoration works. Due to a very low natural 14C concentration the radiocarbon dating method requires special techniques for chemical preparation of samples ...
Sironić, Andreja, Krajcar Bronić, Ines
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