Results 101 to 110 of about 43,948 (300)

Influência das relações DQQ/N e So/Xo na atividade de microorganismos desnitrificantes [PDF]

, 2006
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Química.As atividades industriais e agro-industriais do Estado de Santa Catarina tem colaborado intensamente para a redução da ...
Krause, Luiz Gustavo Tavares
core  

Fat transforms ascorbic acid from inhibiting to promoting acid-catalysed N-nitrosation [PDF]

, 2007
<b>Background</b>: The major potential site of acid nitrosation is the proximal stomach, an anatomical site prone to a rising incidence of metaplasia and adenocarcinoma.
Paterson, S., Crozier, A., Winter, J., Iijima, K., Preston, T., Combet, E., Mullen, W., McColl, K.E.L.   +7 more
core   +1 more source

Nitrite oxidation in the Namibian oxygen minimum zone

, 2012
Nitrite oxidation is the second step of nitrification. It is the primary source of oceanic nitrate, the predominant form of bioavailable nitrogen in the ocean.
Kuypers, Marcel M.M., Marcel MM Kuypers, Lavik, Gaute, Marcel Günter, Lam, Phyllis, Jessika Füssel, Jensen, Marlene M., Kuypers, M., Holtappels, Moritz, Gaute Lavik, Phyllis Lam, Marlene M Jensen, Moritz Holtappels, Fuessel, J., Füssel, Jessika, Lavik, G., Guenter, M., Günter, Marcel, Jensen, M., Holtappels, M., Lam, P.   +20 more
core   +1 more source

Cultivation and Transcriptional Analysis of a Canonical Nitrospira Under Stable Growth Conditions

Frontiers in Microbiology, 2019
Nitrite-oxidizing bacteria (NOB) are vital players in the global nitrogen cycle that convert nitrite to nitrate during the second step of nitrification.
Aniela B. Mundinger, Christopher E. Lawson, Mike S. M. Jetten, Hanna Koch, Sebastian Lücker   +4 more
doaj   +1 more source

A metagenomics-based metabolic model of nitrate-dependent anaerobic oxidation of methane by Methanoperedens-like archaea

Frontiers in Microbiology, 2015
Methane oxidation is an important process to mitigate the emission of the greenhouse gas methane and further exacerbating of climate forcing. Both aerobic and anaerobic microorganisms have been reported to catalyze methane oxidation with only a few ...
Arslan eArshad, Daan R Speth, Rob M De Graaf, Huub J.M. Op den Camp, Mike S.M. Jetten, Cornelia U Welte   +5 more
doaj   +1 more source

The NADPH oxidase NOX4 regulates redox and metabolic homeostasis preventing HCC progression

Hepatology, EarlyView., 2022
Loss of NOX4 in HCC tumor cells induces metabolic reprogramming in a Nrf2/MYC‐dependent manner to promote HCC progression. Abstract Background and Aims The NADPH oxidase NOX4 plays a tumor‐suppressor function in HCC. Silencing NOX4 confers higher proliferative and migratory capacity to HCC cells and increases their in vivo tumorigenic potential in ...
Irene Peñuelas‐Haro, Rut Espinosa‐Sotelo, Eva Crosas‐Molist, Macarena Herranz‐Itúrbide, Daniel Caballero‐Díaz, Ania Alay, Xavier Solé, Emilio Ramos, Teresa Serrano, María L. Martínez‐Chantar, Ulla G. Knaus, José M. Cuezva, Antonio Zorzano, Esther Bertran, Isabel Fabregat   +14 more
wiley   +1 more source

An Electrochemical Sensing Platform Based on Iridium Oxide for Highly Sensitive and Selective Detection of Nitrite and Ascorbic Acid

Acta Chimica Slovenica, 2018
Iridium oxide (IrOx) was electrodeposited onto glassy carbon electrode applying two-step potential cycling procedure. The electrocatalytic properties of the modified electrode IrOx/GC were evaluated with regards to electrochemical oxidation of nitrite ...
Totka Dodevska, Ivan Shterev, Yanna Lazarova   +2 more
doaj   +1 more source

Late‐Stage Functionalization of Peptides on the Solid Phase

Angewandte Chemie International Edition, EarlyView.
Peptide modifications are essential to control pharmacodynamic and pharmacokinetic properties of peptide drugs. Consequently, strategies that allow for efficient and rapid incorporation of non‐canonical modifications into peptides in parallel formats are highly sought after.
Marius Werner, Truc Lam Pham, Franziska Thomas   +2 more
wiley   +1 more source

OXIDATION OF PLUTONIUM (III) BY SODIUM NITRITE

, 1957
The reaction velocity constant for the oxidation of Pu(III) by nitrite in HNO/sub 3/ solution containing ferrous sulfanate is given. The reaction rate was found to be measurable by means of spectrophotometry. The data indicate the reaction to be a pseudo
Brunstad, A.
core   +1 more source

Electrochemical Study of Esculetin Nitration by Digital Simulation of Cyclic Voltammograms

Journal of Chemistry, 2013
The reaction of electrochemically generated o-quinones from oxidation of esculetin as Michael acceptor with nitrite ion as nucleophile has been studied using cyclic voltammetry. The reaction mechanism is believed to be EC, including oxidation of catechol
Lida Khalafi, Mohammad Yari, Farzaneh Yadaei, Shabnam Majidzade   +3 more
doaj   +1 more source