Results 21 to 30 of about 32,751 (204)

Derivatization of Methylglyoxal for LC-ESI-MS Analysis—Stability and Relative Sensitivity of Different Derivatives

Molecules, 2018
The great research interest in the quantification of reactive carbonyl compounds (RCCs), such as methylglyoxal (MGO) in biological and environmental samples, is reflected by the fact that several publications have described specific strategies to perform
Stefan Fritzsche, Susan Billig, Robby Rynek, Ramarao Abburi, Elena Tarakhovskaya, Olga Leuner, Andrej Frolov, Claudia Birkemeyer   +7 more
doaj   +1 more source

Kinetic Model of Biphasic Character of Catalyse Inhibition

Nonlinear Analysis, 2003
A mathematical model of kinetics of fungal catalase inhibition with hydroxylamine in presence of substrate (hydrogen peroxide) has been developed. The scheme includes an intermediate formation and slow reversible native enzyme production.
J. Kulys, K. Kriaučiūnas, R. Vidžiūnaitė   +2 more
doaj   +1 more source

Electrochemical Behavior of a Thio-Quinazoline Derivative Electrodeposited on a Glassy Carbon Electrode Modified with Multi-Wall Carbon Nanotubes: Application for Simultaneous Determination of Hydroxylamine and Nitrite

International Journal of Electrochemical Science, 2013
In this paper, we report the characteristics of a modified electrode prepared by electrodeposition of anthio-quinazoline derivative on the multi-wall carbon nanotubes modified glassy carbon electrode (QMWCNT-GCE).
M. Mehdi Aghayizadeh, Navid Nasirizadeh, S. Mansour Bidoki, M. Esmail Yazdanshenas   +3 more
doaj   +1 more source

Alcaligenes ammonioxydans HO-1 antagonizes Bacillus velezensis via hydroxylamine-triggered population response

Frontiers in Microbiology, 2022
Antagonism is a common behavior seen between microbes in nature. Alcaligenes ammonioxydans HO-1 converts ammonia to nitrogen under aerobic conditions, which leads to the accumulation of extracellular hydroxylamine (HA), providing pronounced growth ...
Xi-Yan Gao, Wei Xie, Wei Xie, Ying Liu, Lan Ma, Lan Ma, Zhi-Pei Liu   +6 more
doaj   +1 more source

Pyrite/H2O2/hydroxylamine system for efficient decolorization of rhodamine B

Water Science and Technology, 2021
To improve the efficiency of the Fe(II)/Fe(III) cycle and continuous reactivity of pyrite, a pyrite/H2O2/hydroxylamine (HA) system was proposed to treat rhodamine B (RhB).
Guang-Jun He, Deng-Jie Zhong, Yun-Lan Xu, Peng Liu, Si-Jing Zeng, Shuang Wang   +5 more
doaj   +1 more source

Nitrate ammonification by Nautilia profundicola AmH: experimental evidence consistent with a free hydroxylamine intermediate.

Frontiers in Microbiology, 2013
The process of nitrate reduction via nitrite controls the fate and bioavailability of mineral nitrogen within ecosystems; i.e. whether it is retained as ammonium (ammonification) or lost as nitrous oxide or dinitrogen (denitrification). Here, we present
Thomas E Hanson, Thomas E Hanson, Thomas E Hanson, Barbara J Campbell, Katie M. Kalis, Mark A. Campbell, Martin G Klotz   +6 more
doaj   +1 more source

Dissolved Nitrous Oxide and Hydroxylamine in the South Yellow Sea and the East China Sea During Early Spring: Distribution, Production, and Emissions

Frontiers in Marine Science, 2021
Coastal marine systems are active regions for the production and emission of nitrous oxide (N2O), a potent greenhouse gas. Due to the inherently high variability in different coastal biogeochemical cycles, the factors and mechanisms regulating coastal ...
Xueji Gu, Xueji Gu, Fang Cheng, Fang Cheng, Xiaolei Chen, Xiaolei Chen, Guanxiang Du, Guanxiang Du, Guiling Zhang, Guiling Zhang   +9 more
doaj   +1 more source

Molecular Probes for Evaluation of Oxidative Stress by In Vivo EPR Spectroscopy and Imaging: State-of-the-Art and Limitations

Magnetochemistry, 2019
Oxidative stress, defined as a misbalance between the production of reactive oxygen species and the antioxidant defenses of the cell, appears as a critical factor either in the onset or in the etiology of many pathological conditions.
Nikola Babić, Fabienne Peyrot
doaj   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Crystal structure of (E)-N-{[3-methyl-1-phenyl-5-(1H-pyrrol-1-yl)-1H-pyrazol-4-yl]methylidene}hydroxylamine

Acta Crystallographica Section E, 2014
The title compound, C15H14N4O, crystallizes with two molecules in the asymmetric unit with similar conformations (r.m.s. overlay fit for the 20 non-H atoms = 0.175 Å).
Joel T. Mague, Shaaban K. Mohamed, Mehmet Akkurt, Talaat I. El-Emary, Mustafa R. Albayati   +4 more
doaj   +1 more source