Results 51 to 60 of about 4,483,134 (295)
Nitrate reduction over nanoscale zero-valent iron prepared by hydrogen reduction of goethite [PDF]
, 2012 Nitrate reduction with nanoscale zero-valent iron (NZVI) was reported as a potential technology to remove nitrate from nitrate-contaminated water. In this paper, nitrate reduction with NZVI prepared by hydrogen reduction of natural goethite (NZVI-N, -N ...
Yuan, P. +7 more
core +1 more source
REDUCTION AND UNFOLDING FOR QUANTUM SYSTEMS: THE HYDROGEN ATOM [PDF]
International Journal of Geometric Methods in Modern Physics, 2005 In this paper we propose a "quantum reduction procedure" based on the reduction of algebras of differential operators on a manifold. We use these techniques to show, in a systematic way, how to relate the hydrogen atom to a family of quantum harmonic oscillators, by the means of the Kustaahneimo–Stiefel fibration.
D'AVANZO A +2 more
openaire +3 more sources
Structure evolution in the reduction process of FeO powder by hydrogen
工程科学学报, 2015 The isothermal hydrogen reduction kinetics of FeO powder at 773-1273 K was investigated by thermogravimetry. Above 873 K, there was a turning point in the kinetic curve, which indicated that the reduction mechanism changed.
YANG Xiao-bo +5 more
doaj +1 more source
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
Photocatalytic Proton Reduction by a Computationally Identified, Molecular Hydrogen-Bonded Framework [PDF]
, 2019 For the first time, a hydrogen-bonded organic framework is shown to be an effective photocatalyst for the production of hydrogen from water. The crystal structure of this molecular material is found to be key to good activity with a chemically identical ...
Xiaoyan, Wang +13 more
core +1 more source
FEBS Letters, EarlyView.Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav +2 more
wiley +1 more source
The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Manganese catalyzed reductive amination of aldehydes using hydrogen as a reductant [PDF]
Chemical Communications, 2018 The first alkylation of amines via reductive amination of aldehydes catalyzed by a manganese bidentate pyridinyl–phosphine complex.
Duo Wei +4 more
openaire +3 more sources
Metals, 2022 Cu-W composite powder with various W contents (0, 10, 20, and 30 wt%) has been fabricated by spray drying, calcination, and two-stage hydrogen reduction in this work. The microstructures and phase evolution of Cu-W composite powder were studied by FESEM,
Qi Wang +5 more
doaj +1 more source
FEBS Letters, EarlyView.Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil +3 more
wiley +1 more source