Results 261 to 270 of about 80,821 (320)

An Efficient Solid Phase Extraction Method for Purification and Analysis of Compound‐Specific Plant Sugar Stable Hydrogen Isotope Values

open access: yesRapid Communications in Mass Spectrometry, Volume 40, Issue 2, 30 January 2026.
ABSTRACT Rationale The stable hydrogen isotope composition (δ2H) of plant compounds can serve as environmental or metabolic proxies, but interpretations are hindered by insufficient mechanistic understanding. This can be improved by analyzing the δ2H values of metabolic intermediates, such as sucrose, which is the direct substrate of cellulose and a ...
Selina Hugger   +3 more
wiley   +1 more source

Hidden Bioavailable Dissolved Organic Matter in the Deep Northwestern Pacific Ocean

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract The deep ocean is widely viewed as a stable reservoir of dissolved organic carbon (DOC) that is highly resistant to microbial degradation. However, this paradigm may be oversimplified. In a cross‐latitude survey conducted in the northwestern Pacific Ocean (155°E, 28.5°N–41.5°N), bulk DOC concentrations were found to be relatively constant ...
Yixian Li   +4 more
wiley   +1 more source

Biological Regulation of Coaxial Calcite‐Aragonite‐Calcite Skeleton Formation in a Deep‐Sea Gorgonian Coral

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Coral biomineralization typically yields either aragonite (in most scleractinians) or calcite (in octocorals), yet the drivers of this polymorph choice remain debated. Here we report a deep‐sea gorgonian coral (Callogorgia sp.) with a coaxial calcite–aragonite–calcite skeleton.
Miaohong He   +8 more
wiley   +1 more source

Halogenated Organic Compounds: A Massive Halogen Reservoir and an Intriguing Component of the Marine Dissolved Organic Matter Pool

open access: yesGeophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Biogeochemical reactions produce volatile halocarbons and semi‐ to nonvolatile dissolved organic halogens (DOX) in marine systems. The former has a large influence on atmospheric chemistry, but little is known about DOX. Here, we present depth profiles of dissolved organic bromine (DOBr) and ‐iodine (DOI) isolated from the Central North ...
Leanne C. Powers   +3 more
wiley   +1 more source

Clustering Analysis of Very Large Measurement and Model Data Sets on High‐Performance Computing Platforms

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 1, 16 January 2026.
Abstract Hierarchical agglomerative clustering is a useful analysis technique which allows for a level of stability, interpretability and flexibility not available in other similar techniques such as K‐means, density‐based clustering or positive matrix factorization.
Colin J. Lee   +2 more
wiley   +1 more source

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