Results 31 to 40 of about 3,508,793 (303)

B-doped carbon nanotubes for enhanced adsorption of NO3− and promoted electrocatalysis on transformation nitrate into ammonia

open access: yesNano Research
Electronic nitrate reduction reaction (NO3RR) is an expected process to obtain green ammonia and bring a hot topic on electrocatalyst constructing. Nevertheless, NO3RR processes a complex path with multiple adsorption and desorption so that the adsorbed ...
Ce Zhou   +8 more
doaj   +1 more source

Rhizobium-Initiated Rice Growth Inhibition Caused by Nitric Oxide Accumulation

open access: yesMolecular Plant-Microbe Interactions, 2007
Isolates of Rhizobium leguminosarum bv. trifolii (the clover root-nodule endosymbiont) from the Nile River delta have been found to infect rice roots and colonize the intercellular spaces of the rice roots.
Francine M. Perrine-Walker   +4 more
doaj   +1 more source

Electrochemical Nitrate Reduction to Ammonia – Recent Progress

open access: yesChemElectroChem, 2023
The presence of nitrate in industrial, domestic and agricultural wastewater has a detrimental impact on both ecosystem and human health, as remediation and purification efforts are slow, challenging and difficult, given the high solubility and stability ...
Dr. Shanshan Niu   +8 more
doaj   +1 more source

Manipulation of carbon media, temperature and hydraulic efficiency to increase nitrate removal rate in denitrification beds [PDF]

open access: yes, 2011
The accumulation of reactive nitrogen (Nr) in terrestrial and aquatic environments is a global environmental issue that causes or contributes to climate change, stratospheric ozone depletion, and deterioration of coastal and terrestrial waters.
Cameron, Stewart Graham
core  

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Denitrifier Still Has the Important Role in Nitrate Reduction to N2 Although It is Not the Predominant Population in the Estuarine Bacterial Community of Nitrate Reducing Bacteria

open access: yesHayati Journal of Biosciences
Denitrification and nitrate-ammonification are the responsible processes for nitrate removal in the estuaries. Temperature, nitrate and organic carbon availability are key factors controlling a rate of the nitrate reduction processes.
Iman Rusmana, David B. Nedwell
doaj   +1 more source

Rapid Nitrate Reduction Assay with Intact Microbial Cells or Spores

open access: yesBio-Protocol, 2014
Many microorganisms have the capacity to use nitrate as a respiratory electron acceptor. Reduction of nitrate is catalyzed by a multi-subunit nitrate reductase that is often located associated with the cytoplasmic membrane and has its active site ...
Marco Fischer   +2 more
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Alternative Oxidase Alleviates Mitochondrial Oxidative Stress during Limited Nitrate Reduction in Arabidopsis thaliana

open access: yesBiomolecules
The conversion of nitrate to ammonium, i.e., nitrate reduction, is a major consumer of reductants in plants. Previous studies have reported that the mitochondrial alternative oxidase (AOX) is upregulated under limited nitrate reduction conditions ...
Daisuke Otomaru   +6 more
doaj   +1 more source

Bioaugmentation of UASB reactors with immobilized Sulfurospirillum barnesii for simultaneous selenate and nitrate removal [PDF]

open access: yes, 2009
Whole-cell immobilization of selenate-respiring Sulfurospirillum barnesii in polyacrylamide gels was investigated to allow the treatment of selenate contaminated (790¿µg Se¿×¿L-1) synthetic wastewater with a high molar excess of nitrate (1,500 times) and
Lenz, M.   +4 more
core   +1 more source

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