Results 61 to 70 of about 4,129 (201)

Unveiling coherently driven hyperpolarization dynamics in signal amplification by reversible exchange

open access: yesNature Communications, 2019
There is increasing effort to improve the signal sensitivity and explore the hyperpolarization dynamics. Here the authors demonstrate the parahydrogen spin transfer dynamics in compounds containing 15N using SABRE hyperpolarization technique with ...
Jacob R. Lindale   +9 more
doaj   +1 more source

Laser spectroscopic studies of the pure rotational U_0(0) and W_0(0) transitions of solid parahydrogen [PDF]

open access: yes, 1991
High resolution spectrum of multipole-induced transitions of solid parahydrogen was recorded using diode and difference frequency laser spectroscopy.
Chan, Man-Chor   +3 more
core  

New para‐hydrogen cold neutron source at the Budapest Research Reactor: Monte Carlo simulations

open access: yesJournal of Applied Crystallography, Volume 59, Issue 2, Page 392-403, April 2026.
This paper explores the options for upgrading the cold neutron source at the Budapest Research Reactor.The planned upgrade of the neutron guide system at the Budapest Research Reactor (BRR) provides an opportunity to enhance the performance of its cold neutron source.
Dmitrii Shapiro   +3 more
wiley   +1 more source

Efficient 15N hyperpolarization of [15N3]metronidazole antibiotic via spin-relayed pulsed SABRE-SHEATH

open access: yesJournal of Magnetic Resonance Open
Signal Amplification by Reversible Exchange in SHield Enables Alignment Transfer to Heteronuclei (SABRE-SHEATH) is an NMR hyperpolarization technique that relies of the simultaneous exchange of parahydrogen and a to-be-hyperpolarized molecule on the ...
Shiraz Nantogma   +5 more
doaj   +1 more source

Perpetual hyperpolarization of allyl acetate from parahydrogen and continuous flow heterogeneous hydrogenation with recycling of unreacted propargyl acetate

open access: yesJournal of Magnetic Resonance Open, 2022
A novel closed loop, continuous flow (CF) reactor system for parahydrogen enhanced nuclear magnetic resonance (NMR) of liquids via heterogeneous catalysis is introduced which enables recycling of unreacted liquid substrate reactant.
Tommy Yunpu Zhao   +7 more
doaj   +1 more source

Schnelle RASER‐MRT

open access: yesAngewandte Chemie, Volume 138, Issue 10, 2 March 2026.
Schnelle RASER‐MRT ermöglicht Bildgebung ohne RF‐Anregung. Stattdessen wird eine Populationsinversion der Kernspins durch SABRE‐Hyperpolarisation erzeugt, die eine Selbstanregung durch RASER ermöglicht. Wenn die gewünschte transversale Magnetisierung aufgebaut ist, wird herkömmliche EPI‐Kodierung ausgelöst, um das Bild aufzuzeichnen.
Sören Lehmkuhl   +7 more
wiley   +1 more source

Parahydrogen-induced polarization allows 2000-fold signal enhancement in biologically active derivatives of the peptide-based drug octreotide

open access: yesScientific Reports, 2023
Octreotide, a somatostatin analogue, has shown its efficacy for the diagnostics and treatment of various types of cancer, i.e., in octreotide scan, as radio-marker after labelling with a radiopharmaceutical.
Jonas Lins   +10 more
doaj   +1 more source

A disintegrin derivative as a case study for PHIP labeling of disulfide bridged biomolecules

open access: yesScientific Reports, 2022
A specific labeling strategy for bioactive molecules is presented for eptifibatide (integrilin) an antiplatelet aggregation inhibitor, which derives from the disintegrin protein barbourin in the venom of certain rattlesnakes. By specifically labeling the
Max Fleckenstein   +7 more
doaj   +1 more source

Real fluid properties of normal and parahydrogen [PDF]

open access: yes, 1968
Computer program calculates the real fluid properties of normal or parahydrogen using a library of single function calls without initial estimates. Accurate transport and thermodynamic properties of molecular hydrogen are needed for advanced propulsion ...
Goldberg, F. N., Haferd, A. M.
core   +1 more source

From Free Radicals and Spin-Chemistry Over Spin-Dynamics and Hyperpolarization to Biology and Materials Science [PDF]

open access: yes, 2017
This special issue of ZPC is dedicated to the 80th anniversary of Kev Salikhov, a prominent scientist who has made seminal contributions to spin chemistry, chemical kinetics, spin hyperpolarization and magnetic resonance.
Buntkowsky, Gerd   +2 more
core   +1 more source

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