Results 31 to 40 of about 478,818 (265)

Bio-inspired nanocatalysts for the oxygen reduction reaction [PDF]

Nature Communications, 2013
Electrochemical conversions at fuel cell electrodes are complex processes. In particular, the oxygen reduction reaction has substantial overpotential limiting the electrical power output efficiency. Effective and inexpensive catalytic interfaces are therefore essential for increased performance.
Grumelli, Doris Elda, Wurtser, Benjamin, Stepanow, Sabastian, Kern, Klaus   +3 more
openaire   +4 more sources

A self‐powered system to electrochemically generate ammonia driven by palladium single atom electrocatalyst

SusMat
The utilization of single atoms (SAs) as trifunctional electrocatalyst for nitrogen reduction, oxygen reduction, and oxygen evolution reactions (NRR, ORR, and OER) is still a formidable challenge.
Hao Hu, Shuyuan Pan, Zhiyong Ma, Kaiyi Liu, Yi Li, Haifeng Bao, Chengwei Deng, Fang Luo, Zehui Yang   +8 more
doaj   +1 more source

Organ‐specific redox imbalances in spinal muscular atrophy mice are partially rescued by SMN antisense oligonucleotides

FEBS Letters, EarlyView.
We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley   +1 more source

A Bifunctional Electrocatalyst for Oxygen Evolution and Oxygen Reduction Reactions in Water [PDF]

Angewandte Chemie International Edition, 2016
AbstractOxygen reduction and water oxidation are two key processes in fuel cell applications. The oxidation of water to dioxygen is a 4 H+/4 e− process, while oxygen can be fully reduced to water by a 4 e−/4 H+ process or partially reduced by fewer electrons to reactive oxygen species such as H2O2 and O2−.
Schofberger, W., Faschinger, F., Chattopadhyay, S., Bhakta, S., Mondal, B., Elemans, J.A.A.W., Mullegger, S., Tebi, S., Koch, R., Klappenberger, F., Paszkiewicz, M., Barth, J.V., Rauls, E., Aldahhak, H., Schmidt, W.G., Dey, Abhishek   +15 more
openaire   +5 more sources

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Investigation of the Effect of Hydrophilicity on Oxygen Reduction Reaction Property with Measurement of Water Vapor Specific Surface Area

Electrochemistry, 2021
For oxygen reduction reaction of an air battery which uses oxygen and water as reactants, it is important to control not only gas diffusivity but also hydrophilicity. In this study, the effect of hydrophilicity was investigated quantitatively.
Satoko TAKASE, Ayumi KIMOTO, Masaki KUSUNOKI, Youichi SHIMIZU   +3 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Eletrocatálise das reações de oxidação de hidrogênio e de redução de oxigênio Electrocatalysis of the hydrogen oxidation and oxygen reduction reactions

Química Nova, 2005
This work discusses the electrocatalytic processes taking place in the polymer electrolyte fuel cell electrodes, specifically the hydrogen oxidation reaction (HOR) and the oxygen reduction reaction (ORR), because these are clear examples of ...
Edson A. Ticianelli, Giuseppe A. Camara, Luís G. R. A. Santos   +2 more
doaj   +1 more source

Preparation and Characterization of Multi-Doped Porous Carbon Nanofibers from Carbonization in Different Atmospheres and Their Oxygen Electrocatalytic Properties Research

Nanomaterials, 2022
Recently, electrocatalysts for oxygen reduction reaction (ORR) as well as oxygen evolution reaction (OER) hinged on electrospun nanofiber composites have attracted wide research attention.
Tao Wang, Oluwafunmilola Ola, Malcom Frimpong Dapaah, Yuhao Lu, Qijian Niu, Liang Cheng, Nannan Wang, Yanqiu Zhu   +7 more
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source