Concept

Isotopomer

Publications associées (13)

Mixed hydrogen-deuterium plasmas on JET ILW

A study of mixed hydrogen-deuterium H-mode plasmas has been carried out in JET-ILW to strengthen the physics basis for extrapolations to JET D-T operation and to support the development of strategies for isotope ratio control in future experiments. Variati ...

2020

Kinetics of Photoelectrochemical Oxidation of Methanol on Hematite Photoanodes

Florian Le Formal, Matthew Thomas Mayer, Yimeng Ma

The kinetics of photoelectrochemical (PEC) oxidation of methanol, as a model organic substrate, on alpha-Fe2O3 photoanodes are studied using photoinduced absorption spectroscopy and transient photocurrent measurements. Methanol is oxidized on alpha-Fe2O3 t ...

American Chemical Society2017

Feeding behaviour of a benthic species (Ammonia tepida) under oxic and anoxic conditions: TEM-NanoSIMS correlation

Anders Meibom, Charlotte Madeleine Nicole Lekieffre, Emmanuelle Geslin

More and more marine areas are subjected to depleted-O2 concentration, mainly due to eutrophication induced by human activities. These phenomena affect benthic ecosystems, in particular continental shelves and coastal areas where the renewal of the bottom ...

2015

New tool for studying the biosynthetic role of glucose in brain at the nanometer scale

Anders Meibom, Graham Knott, Stéphane Laurent Escrig, Arnaud Comment, Yuhei Takado, Mojgan Masoodi

Background: The brain consumes a considerable amount of glucose relative to its size. Brain glucose is a source of energy, mainly via oxidative phosphorylation, as well as a source of building blocks for synthesising macromolecules. Little is known about t ...

2014

Multiple Isomers and Protonation Sites of the Phenylalanine/Serine Dimer

Thomas Rizzo, Ulrich Lorenz

Our investigation of the phenylalanine/serine (Phe/Ser) protonated dimer suggests that the intermolecular interaction between the two amino acids is more complex than could have been anticipated from previous studies of similar systems. Isomer-specific inf ...

2012

Overview of the second stage in the comprehensive mirrors test in JET

The first mirror test for ITER in JET with carbon walls has been completed. Thirty polycrystalline Mo mirrors including four coated with a 1 mu m rhodium (Rh) film were exposed to plasma in the divertor region and in the main chamber. The mirrors were inst ...

2011

Toward dynamic isotopomer analysis in the rat brain in vivo: automatic quantitation of 13C NMR spectra using LCModel

Rolf Gruetter

The LCModel method was adapted to analyze localized in vivo (13)C NMR spectra obtained from the rat brain in vivo at 9.4 T. Prior knowledge of chemical-shifts, J-coupling constants and J-evolution was included in the analysis. Up to 50 different isotopomer ...

Wiley-Blackwell2003

Are high He-3/He-4 ratios in oceanic basalts an indicator of deep-mantle plume components?

Anders Meibom, Reto Frei

The existence of a primordial, undegassed lower mantle reservoir characterized by high concentration of He-3 and high He-3/He-4 ratios is a cornerstone assumption in modern geochemistry. It has become standard practice to interpret high He-3/He-4 ratios in ...

2003

Collisionally enhanced isotopic selectivity in multiphoton dissociation of vibrationally excited CF3H

Thomas Rizzo, Monika Kowalczyk

We have studied infrared multiphoton dissociation of CF3H pre-excited to the second C-H stretch overtone under collisional conditions in view of developing a laser isotope separation scheme for carbon-13. This single stage process results in a C2F4 product ...

2003

A mathematical model of compartmentalized neurotransmitter metabolism in the human brain

Rolf Gruetter

After administration of enriched [1-13C]glucose, the rate of 13C label incorporation into glutamate C4, C3, and C2, glutamine C4, C3, and C2, and aspartate C2 and C3 was simultaneously measured in six normal subjects by 13C NMR at 4 Tesla in 45-ml volumes ...

2001

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