Results 11 to 20 of about 37,366 (283)

Progress of Analytical Techniques and Application of Triple Oxygen Isotopes in Dissolved Oxygen [PDF]

open access: yesJournal of Isotopes
Oxygen is one of the essential elements in Earth's ecosystem,with stable isotopes including δ16O,δ17O,and δ18O. The composition of oxygen stable isotopes (δ17O,δ18O) exhibits different fractionation patterns in various biogeochemical reactions,making ...
Hongmin ZHENG   +3 more
doaj   +2 more sources

A dataset of the mid-brunhes period at site MD05-2925, Solomon Sea: Surface-subsurface planktonic foraminifera stable C-O isotope and Mg/Ca ratios

open access: yesData in Brief, 2021
Here we present derived thermal-hydrological variations data during the Marine isotope stages (MISs) 10–12 using surface and subsurface dwelling planktonic foraminiferal geochemical proxies of a sedimentary core of MD05-2925 (9.3oS, 151.5oE, water depth ...
Li Lo   +5 more
doaj   +1 more source

Isotopic Tracing of Perchlorate Sources in the Environment

open access: yesJournal of Chemistry, 2021
Perchlorate (ClO4−) is an emerging persistent pollutant that is ubiquitous in the environment at trace concentrations. Perchlorate ingestion poses a risk to human health because it interferes with thyroidal hormone production.
Mengnan Zhang   +6 more
doaj   +1 more source

Building Mexican isoscapes: Oxygen and hydrogen isotope data of meteoric water sampled across Mexico

open access: yesData in Brief, 2021
Oxygen and hydrogen isotope data of meteoric water samples are compiled from several States across Mexico. This dataset includes 287 oxygen and hydrogen (and deuterium excess) isotope data corresponding to meteoric water collected from the surface ...
Diana K. Moreiras Reynaga   +5 more
doaj   +1 more source

Investigating stable oxygen and carbon isotopic variability in speleothem records over the last millennium using multiple isotope-enabled climate models [PDF]

open access: yesClimate of the Past, 2022
The incorporation of water isotopologues into the hydrology of general circulation models (GCMs) facilitates the comparison between modeled and measured proxy data in paleoclimate archives.
J. C. Bühler   +12 more
doaj   +1 more source

A relativistic analysis of proton-induced knockout reactions from oxygen isotopes with direct and inverse kinematics. [PDF]

open access: yes, 2020
>Magister Scientiae - MScIn this study a complete set of exclusive (~p; 2p) polarization transfer observables of closed-shell oxygen isotopes are calculated using both direct and inverse kinematics using the relativistic plane wave impulse ...
Motimele, Kanting Evidence
core   +1 more source

Isotopic and magnetic proxies are good indicators of millennial-scale variability of the East Asian monsoon

open access: yesCommunications Earth & Environment, 2023
Past East Asian Monsoon variability has been reconstructed using oxygen isotopes of cave speleothems as well as proxy indicators from Chinese loess sequences.
Louise Fuchs   +6 more
doaj   +1 more source

Oxygen Isotopes and Volatiles in Martian Meteorite [PDF]

open access: yes, 2013
Oxygen isotopes were measured in mineral separates from martian meteorites using laser fluorination and were found to be remarkably uniform in both δ18O and Δ17O, suggesting that martian magmas did not assimilate aqueously altered crust regardless of any
Channon, Melanie Beth
core   +1 more source

Annual variation in hydrogen and oxygen isotopes of river water in the Huashan watershed and sampling scheme optimization

open access: yesShui kexue jinzhan, 2023
The investigation on river water isotope characteristics of small watersheds and the sampling scheme are of great significance for a better understanding of the precipitation-runoff relationship, and for the establishment of an isotope hydrological ...
Aimin LIAO   +6 more
doaj   +1 more source

Do oxygen isotope values in collagen reflect the ecology and physiology of neotropical mammals?

open access: yesFrontiers in Ecology and Evolution, 2015
Stable isotope data provide insight into the foraging ecology of animals. Traditionally, carbon and nitrogen isotope values have been used to infer dietary and habitat preferences.
Brooke eCrowley   +5 more
doaj   +1 more source

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