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Updated: Sep 10, 2025

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
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Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis

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静的から動的へ:イソトープ栄養の推定におけるダイナミクスを取り入れる

Emilie Cathelin1, Sebastien Lefebvre1, Carolina Giraldo2

  • 1Station marine de Wimereux, UMR 8187 - LOG - Laboratoire d'Océanologie et de Géosciences, Université de Lille, CNRS, Université Littoral Côte d'Opale, IRD, Lille, France.

PloS one
|August 26, 2025
PubMed
まとめ

タイムダイナミクスは生態学的ダイエットモデルにバイアスを導入します この研究では,静的なアプローチを改良して,同位体周回とサンプリング頻度を考慮して,ダイナミックな混合モデルを開発します.

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Mass Spectrometry: Isotope Effect01:13

Mass Spectrometry: Isotope Effect

Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the difference between the molecular mass. Furthermore, the intensity of these signals is dependent on the...
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Radioactive Decay and Radiometric Dating

Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
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