Results 71 to 80 of about 4,052,823 (334)

Recent freshening in the Kara sea (Siberia) recorded by stable isotopes in Arctic bivalve shells, [PDF]

open access: yes, 2005
Oxygen and stable carbon isotope records along the growth direction on shells of the bivalve species Astarte borealis and Serripes groenlandicus reliably record all important aspects of the bottom water hydrography in the shallow southeastern Kara Sea ...
Simstich, Johannes   +13 more
core   +1 more source

A Global Methane Observation System to Reduce Uncertainty for Anthropogenic and Natural Sources and Sinks for Detecting and Attributing Climate Feedbacks

open access: yesAdvanced Science, EarlyView.
Conceptual illustration of a Global Ecosystem Methane Observing System (GEM‐OS) integrating satellites, aircraft, atmospheric networks, and ecosystem measurements to quantify methane emissions from anthropogenic and natural sources. The multi‐scale observing framework improves source attribution, reduces uncertainty in regional methane budgets, and ...
P. Ciais   +32 more
wiley   +1 more source

(Table S3) Oxygen isotope ratios of sclerosponge Pedro-Bank_Pb19

open access: yes, 2003
(Table S3) Oxygen isotope ratios of sclerosponge Pedro ...
Joachimski, Michael M   +13 more
core   +1 more source

Bioinspired Porphyrin‐Based Catalysts From Temporospatial Confined Frameworks for Ultrafast Removal of Sulfaclozine

open access: yesAdvanced Science, EarlyView.
We report the rational design of artificial photocatalysts with asymmetrically coordinated dual‐metal centers and a tailored microenvironment, broadly applicable strategy is established for the synthesis of multivariate zirconium‐based metal–organic frameworks, offering a platform for precisely tuning active‐site configurations to optimize ...
Yuxin Lu   +11 more
wiley   +1 more source

(Table 2) Stable carbon and oxygen isotope ratios of Globocassidulina subglobosa from sediment core V28-179

open access: yes, 1977
(Table 2) Stable carbon and oxygen isotope ratios of Globocassidulina subglobosa from sediment core V28 ...
Nicholas J Shackleton (6886052)   +3 more
core   +1 more source

Modeling the signature of sulfur mass-independent fractionation produced in the Archean atmosphere [PDF]

open access: yes, 2014
Minor sulfur isotope anomalies indicate the absence of O2 from the Archean atmosphere. A rich dataset showing large variations in magnitude and sign of Δ33S and Δ36S, preserved in both sulfates and sulfides, suggests that further constraints on Archean ...
Claire, Mark   +6 more
core   +1 more source

Minimal Transport Units Govern Oxygen‐Defect Stabilization and Transport for Lightweight Solid Electrolytes

open access: yesAdvanced Science, EarlyView.
Lightweight borate chemistry combined with minimal transport units provides a new pathway for designing lightweight oxide‐ion solid electrolytes. ABSTRACT Solid electrolytes are central to electrochemical energy technologies, including fuel cells, sensors, catalysis, membrane separation, and electrolyser.
Xiaohui Li   +13 more
wiley   +1 more source

Progress in the Application of Oxygen Isotopes in the Study of Petrogenesis

open access: yesYankuang ceshi, 2013
Since different types of rocks on the earth have different oxygen isotope compositions, they can be used to discuss the origins of various rocks and it has become a powerful tool for studying petrology.
LI Tie-jun
doaj  

Unravelling the magma source and plumbing systems beneath the submarine volcanoes of Bransfield Strait (Antarctica) with stable and noble gas isotopes

open access: yesScientific Reports
Oxygen and hydrogen isotope geochemistry, together with helium, neon and argon isotope systematics, are powerful tools for tracing magma sources and magma plumbing system processes beneath volcanic systems.
Antonio Polo-Sánchez   +6 more
doaj   +1 more source

Testing the impact of diagenesis on the delta O-18 and delta C-13 of benthic foraminiferal calcite from a sediment burial depth transect in the equatorial Pacific [PDF]

open access: yes, 2013
Stable oxygen and carbon isotope (O-18 and C-13) values measured in foraminiferal calcite are one of the primary tools used in paleoceanography. Diagenetic recrystallization of foraminiferal calcite can act to reset primary isotopic values, but its ...
Wilson, Paul   +5 more
core   +1 more source

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