Publications associées à Isotope

Transportable long-lived hyperpolarized samples

David Lyndon Emsley, Geoffrey Bodenhausen, Sami Jannin

A method for the preparation of a hyperpolarized solution of molecules comprises the steps: 1) suspending or coating of a micro-particulate matrix, which is comprising or consisting of the molecules, with a glass-forming solution or suspension comprising a ...

2016

Kinetic isotope effects for fast deuterium and proton exchange rates

Geoffrey Bodenhausen, Daniele Mammoli, Estel Canet Martinez, Pavel Kaderavek

By monitoring the effect of deuterium decoupling on the decay of transverse N-15 magnetization in D-N-15 spin pairs during multiple-refocusing echo sequences, we have determined fast D-D exchange rates k(D) and compared them with fast H-H exchange rates k( ...

Royal Society of Chemistry2016

Uranium Isotopes Fingerprint Biotic Reduction

Rizlan Bernier-Latmani, Yuheng Wang, Malgorzata Alicja Stylo

Knowledge of paleo-redox conditions in the Earth's history provides a window into events that shaped the evolution of life on our planet. The role of microbial activity in paleo-redox processes remains unexplored due to the inability to discriminate biotic ...

Natl Acad Sciences2015

Compound-specific carbon, nitrogen, and hydrogen isotope analysis of N-nitrosodimethylamine in aqueous solutions

Urs von Gunten, Stephanie Spahr

Mitigation of N-nitrosodimethylamine (NDMA) and other hazardous water disinfection byproducts (DBP) is currently hampered by a limited understanding of DBP formation mechanisms. Because variations of the stable isotope composition of NDMA can potentially r ...

Amer Chemical Soc2015

Polymorphs of Theophylline Characterized by DNP Enhanced Solid-State NMR

David Lyndon Emsley, Aaron James Rossini, Arthur César Pinon, David Benjamin Roger Antoine Gajan

We show how dynamic nuclear polarization (DNP) enhanced solid-state NMR spectroscopy can be used to characterize polymorphs and solvates of organic solids. We applied DNP to three polymorphs and one hydrated form of the asthma drug molecule theophylline. F ...

American Chemical Society2015

NanoSIMS isotopic imaging - Deciphering the nature of coral-symbiont metabolic interactions

Anders Meibom, Isabelle Domart-Coulon, Christophe Kopp, Thomas Krüger, Maoz Fine

The ability of endosymbiotic Symbiodinium to fix inorganic nutrients and their translocation to the coral host is considered a key element for the growth of coral reefs in tropical coastal waters and has been a fundamental research topic for over 50 years. ...

2015

Submarine fresh groundwater discharge into Laizhou Bay comparable to the Yellow River flux

David Andrew Barry, Xu Wang, Xin Luo

Near- and off-shore fresh groundwater resources become increasingly important with the social and economic development in coastal areas. Although large scale (hundreds of km) submarine groundwater discharge (SGD) to the ocean has been shown to be of the sa ...

Nature Publishing Group2015

Dynamics of gas phase Ne* + NH3 and Ne* + ND3 Penning ionisation at low temperatures

Andreas Osterwalder, Justinas Jankunas, Benjamin Bertsche

Two isotopic chemical reactions, Ne* + NH_3, and Ne* + ND_3, have been studied at low collision energies by means of a merged beams technique. Partial cross sections have been recorded for the two reactive channels, namely, Ne* + NH_3 → Ne + NH^+_3 + e −, ...

American Institute of Physics2014

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Isotope

Transportable long-lived hyperpolarized samples

Kinetic isotope effects for fast deuterium and proton exchange rates

Copper isotope evidence for large-scale sulphide fractionation during Earth’s differentiation

Uranium Isotopes Fingerprint Biotic Reduction

Compound-specific carbon, nitrogen, and hydrogen isotope analysis of N-nitrosodimethylamine in aqueous solutions

Polymorphs of Theophylline Characterized by DNP Enhanced Solid-State NMR

Reduction and immobilization of uranium in the subsurface

NanoSIMS isotopic imaging - Deciphering the nature of coral-symbiont metabolic interactions

Submarine fresh groundwater discharge into Laizhou Bay comparable to the Yellow River flux

Dynamics of gas phase Ne* + NH3 and Ne* + ND3 Penning ionisation at low temperatures

Graph Chatbot

Chattez avec Graph Search

Compound-specific carbon, nitrogen, and hydrogen isotope analysis of N-nitrosodimethylamine in aqueous solutions

Copper isotope evidence for large-scale sulphide fractionation during Earth’s differentiation

Kinetic isotope effects for fast deuterium and proton exchange rates

Polymorphs of Theophylline Characterized by DNP Enhanced Solid-State NMR

Dynamics of gas phase Ne* + NH3 and Ne* + ND3 Penning ionisation at low temperatures

Uranium Isotopes Fingerprint Biotic Reduction

NanoSIMS isotopic imaging - Deciphering the nature of coral-symbiont metabolic interactions

Transportable long-lived hyperpolarized samples

Submarine fresh groundwater discharge into Laizhou Bay comparable to the Yellow River flux

Reduction and immobilization of uranium in the subsurface