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]
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
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
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]
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
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]
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
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
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 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
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

