Results 41 to 50 of about 2,750 (239)

Local Superfluidity of Parahydrogen Clusters [PDF]

Physical Review Letters, 2008
4 pages, 4 ...
Mezzacapo, Fabio, Boninsegni, Massimo
openaire   +3 more sources

Instrumentation for Hydrogenative Parahydrogen-Based Hyperpolarization Techniques.

Analytical Chemistry, 2022
■ CONTENTS Analysis of pH2 Polarizers B Parahydrogen Addition B Spin-Order Transfer C Purification and Quality Assurance C Components and Capabilities of a Polarizer C Review of Published Instruments D Parahydrogen Generators D Spin Order Transfer (SOT ...
A. Schmidt, C. Bowers, K. Buckenmaier, E. Chekmenev, Henri de Maissin, James Eills, Frowin Ellermann, S. Glöggler, J. Gordon, S. Knecht, I. Koptyug, Jule Kuhn, Andrey N. Pravdivtsev, F. Reineri, T. Theis, K. Them, Jan‐Bernd Hövener   +16 more
semanticscholar   +1 more source

Spying on parahydrogen-induced polarization transfer using a half-tesla benchtop MRI and hyperpolarized imaging enabled by automation

Nature Communications, 2023
Nuclear spin hyperpolarization is a quantum effect that enhances the nuclear magnetic resonance signal by several orders of magnitude and has enabled real-time metabolic imaging in humans.
Frowin Ellermann, Aidan Sirbu, A. Brahms, Charbel D Assaf, R. Herges, Jan‐Bernd Hövener, Andrey N. Pravdivtsev   +6 more
semanticscholar   +1 more source

Hyperpolarized Multi-organ Spectroscopy of Liver and Brain Using 1-^13C-Pyruvate Enhanced via Parahydrogen

Applied Magnetic Resonance, 2023
Hyperpolarization in nuclear magnetic resonance boosts the signals by several orders of magnitude. Using the singlet spin order of parahydrogen to create large non-equilibrium spin polarization is a fast approach to obtain hyperpolarized metabolites in ...
T. Hune, S. Mamone, A. Schmidt, Inês Mahú, Natascha D’Apolito, D. Wiedermann, Jens C. Brüning, S. Glöggler   +7 more
semanticscholar   +1 more source

Open-source, partially 3D-printed, high-pressure (50-bar) liquid-nitrogen-cooled parahydrogen generator [PDF]

Magnetic Resonance, 2021
The signal of magnetic resonance imaging (MRI) can be enhanced by several orders of magnitude using hyperpolarization. In comparison to a broadly used dynamic nuclear polarization (DNP) technique that is already used in clinical trials, the parahydrogen (
F. Ellermann, A. Pravdivtsev, J.-B. Hövener   +2 more
doaj   +1 more source

Parahydrogen-Induced Polarization Relayed via Proton Exchange

, 2021
The hyperpolarization of nuclear spins is a game-changing technology that enables hitherto inaccessible applications for magnetic resonance in chemistry and biomedicine.
Andrey N. Pravdivtsev (1498327), Frowin Ellermann, Igor V. Koptyug (1310340), Oleg G. Salnikov (1656682), Oleg G. Salnikov, Frowin Ellermann (11292744), Kolja Them, Andrey N. Pravdivtsev, Rainer Herges, Igor V. Koptyug, Ivan V. Skovpin (1888732), Jan-Bernd Hövener, Kolja Them (2818261), Jan-Bernd Hövener (5931779), Ivan V. Skovpin, Rainer Herges (1393300)   +15 more
core   +1 more source

On the Possible “Supersolid” Character of Parahydrogen Clusters [PDF]

The Journal of Physical Chemistry A, 2011
We present results of a theoretical study of structural and superfluid properties of parahydrogen clusters comprising 25, 26 and 27 molecules at low temperature. The microscopic model utilized here is based on the Silvera-Goldman pair potential. Numerical results are obtained by means of Quantum Monte Carlo simulations, making use of the continuous ...
Mezzacapo, F., Boninsegni, M.
openaire   +4 more sources

Parahydrogen-Induced Polarization in Gas-Phase Heterogeneous Hydrogenation of Epoxides

, 2023
Hydrogenation of epoxides is a reaction of both fundamental and practical importance. Herein, gas-phase heterogeneous hydrogenation of saturated and unsaturated epoxides over titania-supported Pt, Pd, and Rh catalysts was investigated using the ...
Larisa M. Kovtunova (2831780), Igor V. Koptyug (1310340), Oleg G. Salnikov (1656682), Ekaterina V. Pokochueva (8232237), Kirill V. Kovtunov (1310361), Dudari B. Burueva (5598764)   +5 more
core   +1 more source

Parahydrogen-Polarized Fumarate for Preclinical in Vivo Metabolic Magnetic Resonance Imaging

, 2023
We present a versatile method for the preparation of hyperpolarized [1-13C]fumarate as a contrast agent for preclinical in vivo MRI, using parahydrogen-induced polarization (PHIP).
Tobias Lobmeyer (14701475), Volker Rasche (108344), Gordon Winter (12400868), John W. Blanchard (1277355), Fedor Jelezko (1665523), Christoph Müller (1592521), Felix Josten (12041680), Martin Gierse (12041689), Román Picazo-Frutos (14299072), Holger Barth (152879), Bilal El-Kassem (14701487), Sebastian Lucas (377844), James Eills (6831212), Stephan Knecht (6862571), Maximilian Fellermann (11574970), Frits van Heijster (14701481), Jason Skinner (760676), Tobias Speidel (12195158), Ilai Schwartz (12041719), Michael Keim (12041695), Alastair Marshall (12041701), Senay Karaali (14701478), Jonas Handwerker (12041692), Alon Salhov (12041704), Luca Nagel (14701472), Jochen Scheuer (12041683), Jessica Löffler (14701484), Franz Schilling (1985122), Anna Parker (12897537), Christophoros Vassiliou (14651617)   +29 more
core   +1 more source

Carbon-13 Hyperpolarization of α-Ketocarboxylates with Parahydrogen in Reversible Exchange. [PDF]

ChemMedChem
Signal Amplification by Reversible Exchange (SABRE) is a relatively simple and fast hyperpolarization technique that has been used to hyperpolarize the α‐ketocarboxylate pyruvate, a central metabolite and the leading hyperpolarized MRI contrast agent. In
McBride SJ, MacCulloch K, TomHon P, Browning A, Meisel S, Abdulmojeed M, Goodson BM, Chekmenev EY, Theis T.   +8 more
europepmc   +2 more sources