Results 51 to 60 of about 6,819 (210)

STUDIES ON THE OXIDATION OF AMMONIA BY NITROSOMONAS [PDF]

open access: yesBiochemical Journal, 1965
1. Free-energy calculations for pH7 showed that the oxidation of ammonia to hydroxylamine is endergonic and that the oxidations of hydroxylamine to nitrite and hydrazine to nitrogen are exergonic. It is suggested that the oxidation of ammonia requires the expenditure of energy. 2.
openaire   +2 more sources

Microbial Community Restructuring Under Zinc Oxide Nanoparticle Stress in Membrane Bioreactors

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 5, October 2026.
Long‐term ZnO nanoparticle exposure induced extracellular stress responses and restructured microbial communities, with reduced taxonomic and phylogenetic richness and loss of key nitrogen‐transforming taxa. These ecological changes were accompanied by impaired nitrification, demonstrating that prolonged ZnO exposure can compromise the functional ...
Dongqing Zhang   +2 more
wiley   +1 more source

Microbial community response reveals underlying mechanism of industrial-scale manganese sand biofilters used for the simultaneous removal of iron, manganese and ammonia from groundwater

open access: yesAMB Express, 2018
Most studies have employed aeration–biofiltration process for the simultaneous removal of iron, manganese and ammonia in groundwater. However, what’s inside the “black box”, i.e., the potential contribution of functional microorganisms behavior and ...
Yu Zhang   +7 more
doaj   +1 more source

Tillage does not impact soil greenhouse gas emissions in a Central Texas rainfed maize–cotton system

open access: yesAgrosystems, Geosciences &Environment, Volume 9, Issue 3, September 2026.
Abstract Agricultural soils are a significant source of greenhouse gas (GHG) emissions, primarily as N2O. Monitoring how management practices impact soil gas fluxes (CO2, CH4, and N2O) is useful for making sure conservation practices (e.g., no‐till) are sustainable with regards to all potential environmental impacts.
Dorothy Menefee, Hal Collins, Doug Smith
wiley   +1 more source

Estudo da remoção biológica de nitrogênio a partir de lodo nitrificante cultivado em meio autotrófico sob condições anóxicas [PDF]

open access: yes, 2004
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-graduação em Engenharia Química.O descarte de efluentes contendo concentrações elevadas de nitrogênio, pode comprometer o equilíbrio ambiental, causando ...
Kieling, Dirlei Diedrich
core  

Endophytic Fungi Natural Factories of Novel Bioactive Compounds

open access: yesChemistry &Biodiversity, Volume 23, Issue 9, September 2026.
This review provides a systematic analysis of 242 natural products isolated from 42 genera of endophytic fungi, highlighting their remarkable structural diversity and broad spectrum of biological activities . ABSTRACT Endophytic fungi represent a prolific and chemically diverse source of novel specialized metabolites with significant pharmacological ...
Dilmurod Murodullayev   +18 more
wiley   +1 more source

An online respirometer based on ammonia oxidizing biofilm for prompt toxicity analysis

open access: yesWater Resources and Industry
Wastewater toxicity may significantly disturb the performance of activated sludge processes, the core unit of most wastewater treatment plants, and thus needs to be monitored.
Qiqi Zhang   +5 more
doaj   +1 more source

Lost in translation: the quest for Nitrosomonas cluster 7‐specific amoA primers and TaqMan probes

open access: yesMicrobial Biotechnology, 2020
Summary The choice of primer and TaqMan probes to quantify ammonia‐oxidizing bacteria (AOB) in environmental samples is of crucial importance. The re‐evaluation of primer pairs based on current genomic sequences used for quantification of the amoA gene ...
Laura Orschler   +2 more
doaj   +1 more source

Serpentine Biocrust Microbes Maintain Nitrogen Cycling Under Drought and Heavy Metal Stress

open access: yesEcological Research, Volume 41, Issue 5, September 2026.
This study highlights the complex interplay between soil geochemistry and moisture availability in shaping microbial communities within wetter and drier serpentine and non‐serpentine biological soil crusts. It demonstrates that both factors influence the structure of nitrogen‐cycling microbial communities and the processes they mediate.
Sandra Barnard   +4 more
wiley   +1 more source

ABILITY OF BACTERIAL CONSORTIUM: Bacillus coagulans, Bacilus licheniformis, Bacillus pumilus, Bacillus subtilis, Nitrosomonas sp. and Pseudomonas putida IN BIOREMEDIATION OF WASTE WATER IN CISIRUNG WASTE WATER TREATMENT PLANT [PDF]

open access: yesAgroLife Scientific Journal, 2015
This study was conducted in order to determine the ability of bacterial consortium: Bacillus coagulans, Bacilus licheniformis, Bacillus pumilus, Bacillus subtilis, Nitrosomonas sp., and Pseudomonas putida in bioremediation of wastewater origin Cisirung ...
Ratu SAFITRI   +3 more
doaj  

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