Publications associées à Composition isotopique

Solvent fluctuations and nuclear quantum effects modulate the molecular hyperpolarizability of water

Michele Ceriotti, Sylvie Roke, David Mark Wilkins, Andrea Grisafi, Gabriele Tocci, Chung-Wen Liang

Second-harmonic scattering (SHS) experiments provide a unique approach to probe noncentrosymmetric environments in aqueous media, from bulk solutions to interfaces, living cells, and tissue. A central assumption made in analyzing SHS experiments is that ea ...

Amer Physical Soc2017

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

Yury Tsybin, Konstantin Nagornov, Kristina Srzentic

Lipidomes undergo permanent extensive remodeling, but how the turnover rate differs between lipid classes and molecular species is poorly understood. We employed metabolic N-15 labeling and shotgun ultra-high-resolution mass spectrometry (sUHR) to quantify ...

Amer Chemical Soc2017

When neighbours become competitors - Autotrophic assimilation rates of individual symbionts depend on local density when Stylophora pistillata is regularly fed

Anders Meibom, Thomas Krüger, Maoz Fine

The symbiosis between dinoflagellate microalgae and their cnidarian host represents the fundamental mechanism that allows zooxanthellate corals to access the inorganic nutrient pool of the surrounding seawater and conserve and recycle nutrients within thei ...

2017

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

Rizlan Bernier-Latmani

Historically, it is believed that crystalline uraninite, produced via the abiotic reduction of hexavalent uranium (U-(VI)) is the dominant reduced U species formed in low-temperature uranium roll-front ore deposits. Here we show that non-crystalline U-(IV) ...

Nature Publishing Group2017

Determining the Surface Structure of Silicated Alumina Catalysts via Isotopic Enrichment and Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy

David Lyndon Emsley, Brennan James Walder, Jasmine Viger-Gravel

Isotopic enrichment of Si-29 and DNP-enhanced NMR spectroscopy are combined to determine the detailed surface structure of a silicated alumina catalyst. The significant sensitivity enhancement provided by DNP is vital to the acquisition of multinuclear and ...

American Chemical Society2017

Improved detection sensitivity for heavy trace elements using a miniature laser ablation ionisation mass spectrometer

Herbert Shea, Reto Wiesendanger, Peter Wurz

Laser ablation ionisation time-of-flight mass spectrometry is a versatile technique to obtain highly sensitive measurement of the elements and isotope composition of solid materials. Because of the measurements of nearly all elements in the sample, large i ...

2017

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

Environmental drivers of carbon and nitrogen isotopic signatures in peatland vascular plants along an altitude gradient

Alexandre Buttler, Konstantin Svetlozarov Gavazov, Luca Bragazza

Peatlands are important sinks of atmospheric carbon (C) that, in response to climate warming, are undergoing dynamic vegetation succession. Here we examined the hypothesis that the uptake of nutrients by different plant growth forms (PGFs) is one key mecha ...

Springer2016

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Composition isotopique

Solvent fluctuations and nuclear quantum effects modulate the molecular hyperpolarizability of water

Spruce tree-ring proxy signals during cold and warm periods

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

When neighbours become competitors - Autotrophic assimilation rates of individual symbionts depend on local density when Stylophora pistillata is regularly fed

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

Determining the Surface Structure of Silicated Alumina Catalysts via Isotopic Enrichment and Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy

Improved detection sensitivity for heavy trace elements using a miniature laser ablation ionisation mass spectrometer

Kinetics of Photoelectrochemical Oxidation of Methanol on Hematite Photoanodes

Formation of N-nitrosodimethylamine during water disinfection with chloramine

Environmental drivers of carbon and nitrogen isotopic signatures in peatland vascular plants along an altitude gradient

Graph Chatbot

Chattez avec Graph Search

Spruce tree-ring proxy signals during cold and warm periods

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

Solvent fluctuations and nuclear quantum effects modulate the molecular hyperpolarizability of water

When neighbours become competitors - Autotrophic assimilation rates of individual symbionts depend on local density when Stylophora pistillata is regularly fed

Determining the Surface Structure of Silicated Alumina Catalysts via Isotopic Enrichment and Dynamic Nuclear Polarization Surface-Enhanced NMR Spectroscopy

Environmental drivers of carbon and nitrogen isotopic signatures in peatland vascular plants along an altitude gradient

Improved detection sensitivity for heavy trace elements using a miniature laser ablation ionisation mass spectrometer

Kinetics of Photoelectrochemical Oxidation of Methanol on Hematite Photoanodes

Formation of N-nitrosodimethylamine during water disinfection with chloramine