Results 1 to 10 of about 102,400 (286)

Decreased natural organic matter in water distribution decreases nitrite formation in non-disinfected conditions, via enhanced nitrite oxidation [PDF]

open access: yesWater Research X, 2020
Nitrite in drinking water is a potentially harmful substance for humans, and controlling nitrite formation in drinking water distribution systems (DWDSs) is highly important.
Pirjo-Liisa Rantanen   +5 more
doaj   +2 more sources

Electrocatalytical Nitrite Oxidation via Manganese and Copper Oxides on Carbon Screen-Printed Electrode [PDF]

open access: yesSensors
Nitrite (NO2−) has long been recognized as a contaminant of concern due to its detrimental effects on both human health and the environment. As a result, there is a continuing need to develop sensitive, real-time, low-cost, and portable systems for the ...
Roberta Farina   +10 more
doaj   +2 more sources

Controls on nitrite oxidation in the upper Southern Ocean: insights from winter kinetics experiments in the Indian sector [PDF]

open access: yesBiogeosciences, 2022
Across the Southern Ocean in winter, nitrification is the dominant mixed-layer nitrogen cycle process, with some of the nitrate produced therefrom persisting to fuel productivity during the subsequent growing season.
M. Mdutyana   +9 more
doaj   +1 more source

Nitrite cycling in the primary nitrite maxima of the eastern tropical North Pacific [PDF]

open access: yesBiogeosciences, 2023
The primary nitrite maximum (PNM) is a ubiquitous feature of the upper ocean, where nitrite accumulates in a sharp peak at the base of the euphotic zone.
N. M. Travis   +3 more
doaj   +1 more source

Cyclic Conversions in the Nitrogen Cycle

open access: yesFrontiers in Microbiology, 2021
The cyclic nature of specific conversions in the nitrogen cycle imposes strict limitations to the conversions observed in nature and explains for example why anaerobic ammonium oxidation (anammox) bacteria can only use nitrite – and not nitrate – as ...
Robbert Kleerebezem, Sebastian Lücker
doaj   +1 more source

Concentration-Dependant Antioxidant Activity of Pentoxifylline in Nitrite-induced Hemoglobin Oxidation Model

open access: yesIraqi Journal of Pharmaceutical Sciences, 2017
Free radical formation in heme proteins is recognized as a factor in mediating the toxicity of many chemicals. The present study was designed to evaluate the dose-response relationship of the free radical scavenging properties of pentoxifylline in ...
Tavga A. Aziz
doaj   +5 more sources

Formation of Lipid and Protein Oxidation Products during In Vitro Gastrointestinal Digestion of Dry-Cured Loins with Different Contents of Nitrate/Nitrite Added

open access: yesFoods, 2021
The effect of nitrate/nitrite (0, 37.5, 75, and 150 mg/kg) in the dry-cured loin formulation on the formation of lipid and protein oxidation products during in vitro digestion was evaluated.
Guadalupe Lavado   +3 more
doaj   +1 more source

Testing the influence of light on nitrite cycling in the eastern tropical North Pacific [PDF]

open access: yesBiogeosciences
Light is considered a strong controlling factor of nitrification rates in the surface ocean. Previous work has shown that ammonia oxidation and nitrite oxidation may be inhibited by high light levels, yet active nitrification has been measured in the ...
N. M. Travis   +5 more
doaj   +1 more source

Physiology of the Nitrite-Oxidizing Bacterium Candidatus Nitrotoga sp. CP45 Enriched From a Colorado River

open access: yesFrontiers in Microbiology, 2021
Nitrogen cycling microbes, including nitrite-oxidizing bacteria (NOB), perform critical ecosystem functions that help mitigate anthropogenic stresses and maintain ecosystem health.
Munira A. Lantz   +5 more
doaj   +1 more source

Nitrite improved nitrification efficiency and enriched ammonia-oxidizing archaea and bacteria in the simultaneous nitrification and denitrification process

open access: yesWater Research X, 2023
Simultaneous nitrification and denitrification (SND) is effective and energy-saving for wastewater treatment. As an inevitable intermediate product in the SND process, nitrite affects the efficiency of ammonia oxidation and the composition of nitrifiers.
Yu Xiang   +6 more
doaj   +1 more source

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