Results 151 to 160 of about 7,838 (225)

Reassessing the organic carbon budget in the Murchison meteorite through an extraction–recovery mass‐balance approach

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1729-1741, August 2026.
Abstract A substantial fraction of organic carbon in carbonaceous chondrites has long been described as “missing,” reflecting incomplete recovery and limited resolution of operationally defined organic components. Here, we present a quantitative reassessment of the carbon budget in the Murchison meteorite using an integrated extraction–recovery mass ...
Hina Dohi, Minako Hashiguchi, Koichi Mimura   +2 more
wiley   +1 more source

Carbon monoxide oxidation expands the known metabolic capacity in anaerobic methanotrophic consortia. [PDF]

Nat Commun
Guo Y, Utter DR, Murali R, Orphan VJ.
europepmc   +1 more source

Establishment of a Purge and Trap Continuous‐Flow Isotope Ratio Mass Spectrometer System for Analysis of Stable Nitrate Isotopes (δ15N and δ18O) in Water Samples by Ti(III) Reduction

Rapid Communications in Mass Spectrometry, Volume 40, Issue 14, 30 July 2026.
ABSTRACT Rationale Pollution of surface and shallow groundwater by nitrate (NO3−$$ {\mathrm{NO}}_3^{-} $$) is a global concern, resulting in the deterioration of drinking water quality. Stable isotopes of NO3−$$ {\mathrm{NO}}_3^{-} $$ (δ15N and δ18O) can be used to trace its sources and identify prevailing biogeochemical processes.
Monis Nolitha Gcakasi, Christine Stumpp, Andrea Watzinger   +2 more
wiley   +1 more source

Evaluating nitrogen uptake: Methods and applications for plant research. [PDF]

Appl Plant Sci
Pierce E, Rasmussen A, Huddell A, Sparks EE.   +3 more
europepmc   +1 more source

Substantial Accumulation of Chemically Oxidizable Organic Carbon in Continental Margin Sediments

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The balance between organic carbon (OC) sequestration and oxidation regulates the oceanic carbon cycle, and OC reactivity determines its susceptibility to remineralization or long‐term burial. However, the stability of sedimentary OC on continental margins remains poorly understood.
Yufan Zhang, Xueshi Sun, Dejiang Fan, Ming Liu, Jingbo Chen, Houjie Wang   +5 more
wiley   +1 more source

Assimilatory N₂O reduction by <i>Nostoc</i> sp. strain MS1 isolated from a river: insights from genome and ¹⁵N tracer analysis. [PDF]

Front Microbiol
Suda K, Suenaga T, Matsuzaki S, Riya S, Ishii K, Nomachi M, Fujitani H, Tsuneda S, Chandran K, Terada A.   +9 more
europepmc   +1 more source

Clay-organic matter interactions drive microbial necromass preservation in soils. [PDF]

Nat Commun
Wang X, Kallenbach CM, Almaraz M, Georgiou K, Sun L, Sang C, Jiang P, Liu Y, Bai E, Wang C.   +9 more
europepmc   +1 more source

Fungi enhance microbial carbon retention in high Arctic fjord sediment. [PDF]

PLoS Biol
Trejos-Espeleta JC, Bradley JA, Coskun ÖK, Wehrmann LM, Gomez-Saez GV, Orsi WD.   +5 more
europepmc   +1 more source

Challenges and Methodologies to Assess Protein Requirement and Quality Across Different Life Stages in Dogs: A Review. [PDF]

Animals (Basel)
Scarpim LB, Pacheco LG.
europepmc   +1 more source

Selective Synthesis of 5-Nitroindoles through a Ag-Catalyzed Nitro Rearrangement/Cyclization Cascade of <i>N</i>-(<i>o</i>-Alkynylphenyl)nitramines. [PDF]

Org Lett
Nakamura I, Matsuoka S, Terada M.
europepmc   +1 more source