Nitrate reduction
Influence of shellfish farming activities on nitrification, nitrate reduction to ammonium and denitrification at the water-sediment interface of the Thau lagoon, France
... To cite this version: Gilbert, Franck and Souchu, Philippe and Bianchi, Micheline and Bonin, Patricia Influence of shellfish farming activities on nitrification, nitrate reduction to ammonium and ...
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Importance of nitrate reduction in benthic carbon mineralization in two eutrophic estuaries Modeling, observations and laboratory experiments
... and nitrate by nitrifying microorganisms. In the anoxic part, nitrate is mainly transformed to nitrogen gas by denitrification, a microbially-mediated process, which is the ultimate process in transforming ...
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Halomonas desiderata as a bacterial model to predict the possible biological nitrate reduction in concrete cells of nuclear waste disposals
... 0.82CH 3 COOH þ NO 3 / 0.07C 5 H 7 O 2 N þ HCO 3 þ 0.47N 2 þ 0.30CO 2 þ 0.90H 2 O (2) The acetate/nitrate ratio determined experimentally (0.90) was then quite close to the theoretical ratio (0.82) when bacterial ...
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Use of a continuous-flow bioreactor to evaluate nitrate reduction rate of Halomonas desiderata in cementitious environment relevant to nuclear waste deep repository
... of nitrate reduction at high pH [8,9,20,21] ...reduce nitrate at pH between ...and nitrate. The limiting pH for nitrate reduction by Hd in cement leachate was clearly identified ...
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Influence of flooding on growth, nitrogen availability in soil, and nitrate reduction of young oak seedlings (Quercus robur L.)
... / nitrate reduction / Quercus robur ...activités nitrate réductase racinaires des deux lots étaient similaires alors que dans les feuilles elle était toujours inférieure chez les plants ...
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Oxygen and light determine the pathways of nitrate reduction in a highly saline lake
... Devarda’s alloy, a new acid trap was added to each vial to retain ammonia gas deriving from nitrate reduction; the subsequent procedure was the same as described above. The filter discs from the acid traps ...
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Importance of the Two Dissimilatory (Nar) Nitrate Reductases in the Growth and Nitrate Reduction of the Methylotrophic Marine Bacterium Methylophaga nitratireducenticrescens JAM1
... The nitrate consumption of each strain appeared to be correlated to growth (Figure ...the nitrate contained in the medium within only 40 h with no delay, although the precultures were grown under aerobic ...
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Denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium in an East African Great Lake (Lake Kivu)
... 2. Introduction Denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium in an East African Great Lake (Lake Kivu) F.A.E. Roland 1 , F. Darchambeau 1 , A.V. Borges 1 , ...
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Nitrogen-limited mangrove ecosystems conserve N through dissimilatory nitrate reduction to ammonium
... NRA5 nitrate reducing activity measured in nitrification blocked experiments; DNRA5 Dissimilatory nitrate reduction to ammonium; Anx5 Anammox; DNT5 Denitrification ...
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Denitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium in an East African Great Lake (Lake Kivu)
... As an element required for life, the availability of nitrogen (N) can limit biological growth and ecosystem productivity. N is cycled through the biosphere via a number of microbial-mediated processes including ...
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Wetland restoration and nitrate reduction: the example of the peri-urban wetland of Vitoria-Gasteiz (Basque Country, North Spain)
... functionality, nitrate losses, Basque Country Introduction In recent years, surface and groundwaters in areas of largely agricultural land have become so contaminated that they are not available for use without ...
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On the kinetics of the nitrate reduction in concentrated nitric acid
... involving nitrate ion adsorbate that undergoes an electron transfer has been well described in the literature [5, ...higher nitrate concentration and ...
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Surface and bacterial reduction of nitrate at alkaline pH: Conditions comparable to a nuclear waste repository
... and nitrate concentrations in the two compartments of the experimental ...the nitrate reduction stopped mainly at the nitrite step, with final nitrite concentrations of ...
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Nitrate reductase regulation in tomato roots by exogenous nitrate: a possible role in tolerance to long-term root anoxia
... of nitrate reductase (NR) regulation under long-term anoxia in roots of whole plants and the putative role of nitrate in anoxia tolerance have been ...and nitrate. Under anoxia, NR dephosphorylation ...
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Nitrate and nitrite reduction at high pH in a cementitious environment by a microbial microcosm
... the nitrate reduction was complete; the system reached a steady state in less than 24 h of bioreactor ...nitrogen reduction rate of the consortium was twice as fast ...microbial nitrate ...
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Regard sur les résultats d’analyse de sol (nitrate et ammonium) en sortie d’hiver
... Au cours de cette période (4/12/2015 2 – 26/01/2016 3 ), il a plu 123 mm 4 . En considérant les sols à saturation en début de période, on peut évaluer la concentration en nitrate (mise en solution de 33 kg N- NO ...
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Réduire les fuites de nitrate au moyen de cultures intermédiaires. Résumé de l'étude
... ensemble actualisé de connaissances et références agronomiques sur les conditions d’efficacité des cultures intermédiaires. Dans cet objectif, les ministères chargés de l'Ecologie et de l'Agriculture ont demandé à l’INRA ...
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Near-IR photodissociation of peroxy acetyl nitrate
... use ALTAIR radar data of combined head echos and non-specular trails to test non- specular trail derived velocity against head echo velocities.. Meteor velocities derived from non-specul[r] ...
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Effet du nitrate d’uranyle sur la germination des graines du Cléome amblyocarpa
... de nitrate d’uranyle hexa hydraté [UO 2 (NO 3 )2-6H 2 O]sur le taux de germination et la croissance des radicules et des tigelles du Cleome ...de nitrate d’uranyle hexa ...
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Compréhension des mécanismes d'incompatibilité chimique du nitrate d'ammonium par modélisation moléculaire
... le nitrate d’ammonium mélangé à du gasoil conduit à un explosif, les experts ont également envisagé une réaction explosive entre le DCCNa et du nitrate d’ammonium pollué par des fuites d’huile ou de ...
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