Articles with "isotope" as a keyword



Investigating the Direct Meltwater Effect in Terrestrial Oxygen‐Isotope Paleoclimate Records Using an Isotope‐Enabled Earth System Model

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Published in 2017 at "Geophysical Research Letters"

DOI: 10.1002/2017gl076253

Abstract: Variations in terrestrial oxygen-isotope reconstructions from ice cores and speleothems have been primarily attributed to climatic changes of surface air temperature, precipitation amount, or atmospheric circulation. Here we demonstrate with the fully coupled isotope-enabled Community… read more here.

Keywords: oxygen isotope; isotope; meltwater effect; direct meltwater ... See more keywords

Temperature dependence of stable carbon kinetic isotope effect for the oxidation reaction of ethane by OH radicals: Experimental and theoretical studies

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Published in 2017 at "Journal of Geophysical Research"

DOI: 10.1002/2017jd026950

Abstract: The stable carbon kinetic isotope effect (KIE) of ethane photo-oxidation by OH radicals was deduced by employing both laboratory measurements and theoretical calculations. The investigations were designed to elucidate the temperature dependence of KIE within… read more here.

Keywords: ethane; temperature; kie; isotope ... See more keywords

Stable isotope analyses reveal previously unknown trophic mode diversity in the Hymenochaetales.

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Published in 2018 at "American journal of botany"

DOI: 10.1002/ajb2.1183

Abstract: PREMISE OF THE STUDY The Hymenochaetales are dominated by lignicolous saprotrophic fungi involved in wood decay. However, the group also includes bryophilous and terricolous taxa, but their modes of nutrition are not clear. Here, we… read more here.

Keywords: isotope analyses; isotope; non lignicolous; trophic mode ... See more keywords

Continuity or conquest? A multi-isotope approach to investigating identity in the Early Iron Age of the Southern Levant.

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Published in 2017 at "American journal of physical anthropology"

DOI: 10.1002/ajpa.23086

Abstract: OBJECTIVES Across the Mediterranean and Near East, the transition from the Late Bronze Age (ca. 1550-1200 BC) to the Early Iron Age (ca. 1200-900 BC) was accompanied by profound cultural change. While this transformation was… read more here.

Keywords: early iron; tell dothan; age; isotope ... See more keywords
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Reconstruction of human subsistence and husbandry strategies from the Iberian Early Neolithic: A stable isotope approach.

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Published in 2018 at "American journal of physical anthropology"

DOI: 10.1002/ajpa.23622

Abstract: OBJECTIVES The Early Neolithic involved an important social and economic shift that can be tested not only with the material culture, but also through biomolecular approaches. The Iberian Peninsula presents few Early Neolithic sites where… read more here.

Keywords: early neolithic; isotope; human subsistence; reconstruction human ... See more keywords
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Isotopic evidence for anthropogenic lead exposure on a 17th/18th century Barbadian plantation

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Published in 2019 at "American Journal of Physical Anthropology"

DOI: 10.1002/ajpa.23938

Abstract: Abstract Objectives To identify and characterize anthropogenic lead sources on a 17th/18th century Barbadian plantation and to test if lead isotope analyses can be used to identify the geographic origins of first‐generation African captives. Materials… read more here.

Keywords: anthropology; isotope; plantation; anthropogenic lead ... See more keywords

Feeding ecology and population delineation of south‐eastern Atlantic and south‐western Indian Ocean humpback whales using stable isotope analysis

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Published in 2020 at "Aquatic Conservation: Marine and Freshwater Ecosystems"

DOI: 10.1002/aqc.3266

Abstract: Funding information Royal Society Newton International Fellowship; Columbia University Abstract 1. Population delineation is vital for effectively managing and protecting populations of all at-risk species. Population boundaries of Southern Hemisphere humpback whales on their breeding… read more here.

Keywords: isotope analysis; population; ecology; stable isotope ... See more keywords

Stable Isotope Analysis of Oysters as a Tool for Environmental Monitoring in a Marine Extractive Reserve

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Published in 2025 at "Aquatic Conservation: Marine and Freshwater Ecosystems"

DOI: 10.1002/aqc.70088

Abstract: The stable isotopes δ13C and δ15N are widely recognized and utilized as biomarkers for analysing trophic links, paleoenvironmental reconstruction, biogeography and nutrient sources. However, it is essential to further develop their applications, as their use… read more here.

Keywords: isotope; environmental monitoring; marine extractive; monitoring ... See more keywords

Isotope‐Guided Metabolomics Reveals Divergent Incorporation of Valine into Different Flavor Precursor Classes in Chives

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Published in 2023 at "ChemBioChem"

DOI: 10.1002/cbic.202300056

Abstract: Plants of the genus Allium such as chives, onions or garlic produce S‐alk(en)yl cysteine sulfoxides as flavor precursors. Two major representatives are S‐propenyl cysteine sulfoxide (isoalliin) and S‐propyl cysteine sulfoxide (propiin), which only differ by… read more here.

Keywords: guided metabolomics; metabolomics reveals; valine; reveals divergent ... See more keywords

Endogenous Production and Vibrational Analysis of Heavy‐Isotope‐Labeled Peptides from Cyanobacteria

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Published in 2024 at "ChemBioChem"

DOI: 10.1002/cbic.202400019

Abstract: Stable isotope labeling is an extremely useful tool for characterizing the structure, tracing the metabolism, and imaging the distribution of natural products in living organisms using mass‐sensitive measurement techniques. In this study, a cyanobacterium was… read more here.

Keywords: isotope incorporation; heavy isotope; natural products; heavy labeled ... See more keywords

NMR Spectroscopic Isotope Tracking Reveals Cascade Steps in Carbohydrate Conversion by Tin‐Beta

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Published in 2018 at "ChemCatChem"

DOI: 10.1002/cctc.201701861

Abstract: Quantitative isotope tracking studies were used to investigate the reaction pathways that occur for Sn‐Beta‐catalyzed carbohydrate conversion to various α‐hydroxy esters. Experimental insight into the conversion of pentoses was sought (i) by identifying pathways based on… read more here.

Keywords: carbohydrate conversion; isotope; conversion; beta ... See more keywords