Results 231 to 240 of about 139,618 (290)

When collagen fails: Zinc isotopes unlock Sumerian lifeways in southern Mesopotamia. [PDF]

Proc Natl Acad Sci U S A
Giaccari M, Romano L, Soncin S, Panella S, Alhaique F, D'Agostino F, Jaouen K, Tafuri MA.   +7 more
europepmc   +1 more source

Triple Oxygen Isotope Geochemistry

, 2023
Bindeman, Ilya N., Pack, Andreas
openaire   +1 more source

Isotopic and defect analysis of enriched molybdenum oxide using EPR spectroscopy and DFT simulation. [PDF]

Sci Rep
Hosseini R, Karimi-Sabet J, Janbazi M, Sharbatdaran M, Ashjari M.   +4 more
europepmc   +1 more source

Geographical traceability of bacteria based on a systematic stable isotope analysis method. [PDF]

Appl Microbiol Biotechnol
Wang W, Zhao B, Cai Z, Jie Z, Feng L, Hu C, Guo H, Li Y, Deng X, Zhu J, Mei H, Ye J.   +11 more
europepmc   +1 more source

Oxygen isotopes and lakes

, 2014
Leng, Melanie, Dean, Jonathan
openaire   +1 more source

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Oxygen isotope cosmothermometer

Geochimica et Cosmochimica Acta, 1972
Variations in oxygen isotopic abundances of meteoritic minerals, chondrules, whole meteorites, and planets are discussed in terms of a model involving isotopic exchange between primordial dust and a cooling solar nebular gas. From the temperature-dependence of the isotopic fractionation factors, temperatures have been assigned to the processes of ...
Naoki Onuma, Robert N. Clayton, Toshiko K. Mayeda   +2 more
openaire   +1 more source

Isotope ratios in photosynthetic oxygen

Biochimica et Biophysica Acta (BBA) - Bioenergetics, 1979
Axenic suspensions of the fresh water green alga Ankistrodesmus braunii were illuminated under aerobic conditions. The released gas mixture was introduced into the ion source of an isotope mass spectrometer, which recorded the 18O/16O ratio.
H, Metzner, K, Fischer, O, Bazlen
openaire   +2 more sources

Oxygen Isotope Zoning in Garnet

Science, 1991
Oxygen isotope zoning was examined within garnet with the use of the stable isotope laser probe. Four metamorphic garnets from the regional metamorphic terrane in Vermont and the skarn deposit at Carr Fork, Utah, were examined and were found to be concentrically zoned in δ 18 O values. The largest variations in δ
C P, Chamberlain, M E, Conrad
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Industrial separation of oxygen isotopes by oxygen distillation

Journal of Labelled Compounds and Radiopharmaceuticals, 2019
18O‐labeled water (Water‐18O) is a widely used starting material of 18F‐labeled diagnostic agents in positron emission tomography (PET). Conventionally, Water‐18O has been separated from other stable oxygen isotope species (16O, 17O) by water distillation or nitric oxide distillation. However, conventional methods are costly and may have safety issues.
Takehiro Igarashi, Takashi Kambe, Hitoshi Kihara   +2 more
openaire   +2 more sources