Results 71 to 80 of about 16,023 (231)

The Role of N2 as a Geo-Biosignature for the Detection and Characterization of Earth-like Habitats [PDF]

open access: yes, 2019
Since the Archean, N2 has been a major atmospheric constituent in Earth's atmosphere. Nitrogen is an essential element in the building blocks of life, therefore the geobiological nitrogen cycle is a fundamental factor in the long term evolution of both ...
Cubillos, Patricio E.   +6 more
core   +2 more sources

Acetogenic Methane‐Carbon Monoxide Comproportionation: An Exergonic but Unobserved Microbial Metabolism

open access: yesJournal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.
Abstract Microbial metabolism relies on redox reactions that exploit chemical disequilibria. While aerobic carbon oxidation, carbon fixation, and fermentation are well studied, the broader space of anaerobic carbon redox reactions remains underexplored.
Heidi S. Aronson   +2 more
wiley   +1 more source

Nitrogen isotope effects can be used to diagnose N transformations in wastewater anammox systems

open access: yesScientific Reports, 2021
Anaerobic ammonium oxidation (anammox) plays an important role in aquatic systems as a sink of bioavailable nitrogen (N), and in engineered processes by removing ammonium from wastewater.
Paul M. Magyar   +8 more
doaj   +1 more source

Enrichment of anaerobic ammonium oxidation (anammox) bacteria for short start-up of the anammox process: a review [PDF]

open access: yes, 2015
The application of the anaerobic ammonium oxidation (anammox) reaction in a biological nitrogen removal system to treat wastewater has become of great interest since its discovery.
Hassan, Mohd Ali   +3 more
core   +1 more source

Electroenzymatic Cascades for Nitrogen Upgrading: Beyond Ammonia Towards Value‐Added Nitrogen Chemicals

open access: yesChemCatChem, Volume 18, Issue 7, 14 April 2026.
This review maps how electroenzymatic cascades that couple nitrogen‐cycle enzymes with C─N bond forming auxilary enzymes, powered by direct electron transfer (DET) or mediated electron transfer (MET), can upgrade N2 and waste nitrogen streams into value‐added amines, amides, amino acids, and other nitrogen‐based chemicals.
Rohit G. Jadhav   +4 more
wiley   +1 more source

Vertical segregation among pathways mediating nitrogen loss (N2 and N2O production) across the oxygen gradient in a coastal upwelling ecosystem [PDF]

open access: yes, 2017
Indexación: ScopusThe upwelling system off central Chile (36.5 S) is seasonally subjected to oxygen (O2)-deficient waters, with a strong vertical gradient in O2 (from oxic to anoxic conditions) that spans a few metres (30-50€m interval) over the shelf ...
Farías, L.   +3 more
core   +4 more sources

Impacts of Biostimulants on Nitrous Oxide Emissions and the Soil Microbiome

open access: yesJournal of Plant Nutrition and Soil Science, Volume 189, Issue 2, Page 216-229, April 2026.
Soil incubation experiment examining the influence of biostimulants on greenhouse gas emissions and the soil microbiome in fertilized soils. ABSTRACT Background Overapplication of nitrogenous fertilizer and enhanced microbial activity in agricultural soils are drivers of increasing greenhouse gas emissions.
Conor Blunt   +4 more
wiley   +1 more source

Effect of Internal Recycle Ratio on Nitrogen Removal Efficiency in a Three-stage ANAMMOX Process for Treating Reject Water

open access: yes대한환경공학회지, 2020
Objectives In order to improve the stability of the ANAMMOX process, a three-stage ANAMMOX process combined with denitritation/nitritation process was operated, and effect of internal recycle ratio on the nitrogen removal efficiency was investigated ...
Daehee Choi   +3 more
doaj   +1 more source

Oxygen tolerance and detoxification mechanisms of highly enriched planktonic anaerobic ammonium-oxidizing (anammox) bacteria

open access: yesISME Communications, 2023
Oxygen is a key regulatory factor of anaerobic ammonium oxidation (anammox). Although the inhibitory effect of oxygen is evident, a wide range of oxygen sensitivities of anammox bacteria have been reported so far, which makes it difficult to model the ...
Satoshi Okabe   +6 more
doaj   +1 more source

Invasion moving boundary problem for a biofilm reactor model

open access: yes, 2017
The work presents the analysis of the free boundary value problem related to the invasion model of new species in biofilm reactors. In the framework of continuum approach to mathematical modelling of biofilm growth, the problem consists of a system of ...
D'Acunto, Berardino   +3 more
core   +1 more source

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