Results 71 to 80 of about 41,105 (250)
Boreas, EarlyView.Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt +4 more
wiley +1 more source
Nature CommunicationsAccumulating evidences are challenging the paradigm that methane in surface water primarily stems from the anaerobic transformation of organic matters.
Jie Ye +8 more
doaj +1 more source
Evidence for Seismogenic Hydrogen Gas, a Potential Microbial Energy Source on Earth and Mars [PDF]
, 2016 M thanks the STFC for a PhD studentship and the NASA Astrobiology Institute for additional funding (NNAI13AA90A; Foundations of Complex Life, Evolution, Preservation and Detection on Earth and Beyond).
Blamey, Nigel J F +2 more
core +1 more source
The FEBS Journal, EarlyView.Small protein MtrR is a regulator of the Mtr methyltransferase complex in Methanosarcina mazei. It binds specifically to the MtrA subunit and modulates Mtr activity in response to hydrogen (H2) availability. Deleting mtrR impairs growth in the presence but not absence of H2, indicating its role in directing methyl transfer toward an energy‐conserving ...
Tim Habenicht +6 more
wiley +1 more source
Methane in the Baltic and North Seas and a reassessment of the marine emissions of methane [PDF]
, 1994 During three measurement campaigns on the Baltic and North Seas, atmospheric and dissolved methane was determined with an automated gas chromatographic system.
Angelis +71 more
core +1 more source
Prebiotic aqueous reactions catalyzed by native nickel without hydrogen
The FEBS Journal, EarlyView.Serpentinizing (H2‐producing) hydrothermal vents are candidate environments for metabolic origin. They generate highly reducing conditions that convert CO2 to formate and methane in abiotic reactions resembling reactions of the acetyl‐CoA pathway of CO2 fixation. They also contain natural catalysts. Native nickel (Ni0), like Fe0, Co0, and their alloys,
Carolina Garcia Garcia +2 more
wiley +1 more source
Genetic resources for methane production from biomass described with gene ontology
Frontiers in Microbiology, 2014 Methane (CH4) is a valuable fuel, constituting 70-95% of natural gas, and a potent greenhouse gas. Release of CH4 into the atmosphere contributes to climate change.
Endang ePurwantini +8 more
doaj +1 more source
How do drying and rewetting events affect nutrient fluxes and bacteria dynamics in subtropical estuarine sediments? [PDF]
, 2018 Drying and rewetting occur frequently in coastal marsh sediments due to oscillations of rising and falling tides, and episodic droughts and floods. Similarly, drying events also occur within freshwater systems due to changing precipitation patterns ...
Jenkins, Jason D.
core +1 more source
Structural Basis of Hydrogenotrophic Methanogenesis
Annual Review of Microbiology, 2020 Most methanogenic archaea use the rudimentary hydrogenotrophic pathway—from CO2and H2to methane—as the terminal step of microbial biomass degradation in anoxic habitats. The barely exergonic process that just conserves sufficient energy for a modest lifestyle involves chemically challenging reactions catalyzed by complex enzyme machineries with unique ...
Shima, S. +3 more
openaire +5 more sources
Effect of Moderate Heat on TCE Reductive Dechlorination Rates in Groundwater
Groundwater Monitoring &Remediation, EarlyView.Abstract Low‐temperature heating (in the mesophilic range of ~15 to 40 °C) of contaminated aquifers offers the prospect of increasing the rates for biotic and abiotic treatment of volatile organic compounds. Thermal In Situ Sustainable Remediation (TISR®) is one of the approaches available to implement low temperature heating.
David L. Freedman +3 more
wiley +1 more source