Results 61 to 70 of about 12,308 (209)

Isolation and characterization of a thermophilic, obligately anaerobic and heterotrophic marine Chloroflexi bacterium from a Chloroflexi dominated microbial community associated with a Japanese shallow hydrothermal system, and proposal for Thermomarinilinea lacunofontalis gen. nov., sp. nov. [PDF]

open access: yes, 2013
A novel marine thermophilic and heterotrophic Anaerolineae bacterium in the phylum Chloroflexi, strain SW7T, was isolated from an in situ colonization system deployed in the main hydrothermal vent of the Taketomi submarine hot spring field located on the
FURUSHIMA, Yasuo   +19 more
core   +1 more source

Miniaturized biosignature analysis reveals implications for the formation of cold seep carbonates at Hydrate Ridge (off Oregon, USA) [PDF]

open access: yes, 2007
Methane-related carbonates from Hydrate Ridge typically show several macroscopically distinguishable mineral phases, namely whitish aragonite, lucent aragonite, and gray micrite.
Bauermeister, J.   +5 more
core   +4 more sources

Clumped isotopes as fingerprints of microbial methane production pathways in marine sediments

open access: yesLimnology and Oceanography Letters, Volume 11, Issue 1, January 2026.
Abstract Microbial methanogenesis in marine sediments produces significant amounts of methane from various substrates; however, identifying the active pathways in situ remains challenging. While the bulk and clumped isotopic signatures of methane from different pathways have been studied in pure cultures, these are difficult to compare with complex ...
Anna J. Wallenius   +5 more
wiley   +1 more source

Nonequilibrium Neutrino Oscillations in the Early Universe with an Inverted Neutrino-Mass Hierarchy

open access: yes, 1996
The annihilation of electron-positron pairs around one second after the big bang distorts the Fermi-Dirac spectrum of neutrino energies. We determine the distortions assuming neutrino mixing with an inverted neutrino-mass hierarchy.
Caldwell   +24 more
core   +3 more sources

Anaerobic oxidation of methane associated with sulfate reduction in a natural freshwater gas source [PDF]

open access: yes, 2015
The occurrence of anaerobic oxidation of methane (AOM) and trace methane oxidation (TMO) was investigated in a freshwater natural gas source. Sediment samples were taken and analyzed for potential electron acceptors coupled to AOM.
A Boetius   +84 more
core   +2 more sources

Dynamics of Iron‐Bound Organic Carbon Across Different Development Stages of Marine Cold Seeps

open access: yesGlobal Biogeochemical Cycles, Volume 40, Issue 1, January 2026.
Abstract Marine cold seeps, where subsurface methane‐rich fluids discharge at seafloors, are “oases of life” that sustain highly active organic carbon (OC) and iron (Fe) cycling along the global continental margins. However, the interactions between Fe and OC and their impacts on the development and long‐term carbon preservation of cold seep ecosystems
Wenqi Ye   +15 more
wiley   +1 more source

Biomineralization mediated by anaerobic methane-consuming cell consortia [PDF]

open access: yes, 2014
published_or_final_versio
Chen, Y   +6 more
core   +2 more sources

Nitrogen and carbon flows in a microbial mat involving anaerobic oxidation of methane in northwestern Black Sea: perspectives from nitrogen and carbon isotopic composition of coenzyme F430 and its biosynthetic pathway

open access: yesProgress in Earth and Planetary Science
Coenzyme F430, a nickel-containing tetrapyrrole, serves as a cofactor for methyl-coenzyme M reductase (MCR), which catalyzes both the final step of methanogenesis and the initial step of anaerobic oxidation of methane (AOM).
Masanori Kaneko   +11 more
doaj   +1 more source

Synchronization in large directed networks of coupled phase oscillators

open access: yes, 2005
We extend recent theoretical approximations describing the transition to synchronization in large undirected networks of coupled phase oscillators to the case of directed networks.
Brian R. Hunt   +3 more
core   +1 more source

Anaerobic methanotrophic communities thrive in deep submarine permafrost [PDF]

open access: yes, 2018
Thawing submarine permafrost is a source of methane to the subsurface biosphere. Methane oxidation in submarine permafrost sediments has been proposed, but the responsible microorganisms remain uncharacterized.
Grigoriev, M. N.   +10 more
core   +1 more source

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