Results 51 to 60 of about 2,821 (200)
Muonium hydride: The lowest density crystal
Physical Review Research, 2021 A muonium hydride molecule is a bound state of muonium and hydrogen atoms. It has half the mass of a parahydrogen molecule and very similar electronic properties in its ground state.
Youssef Kora +3 more
doaj +1 more source
Equation of state of solid parahydrogen using ab initio two-body and three-body interaction potentials. [PDF]
Journal of Chemical Physics, 2022 We present the equation of state of solid parahydrogen between 0.024 and 0.1 Å-3 at T = 4.2 K, calculated using path integral Monte Carlo simulations, with ab initio two-body and three-body interaction potentials.
A. Ibrahim, P. Roy
semanticscholar +1 more source
Hyperpolarization of Pyridine 15N‐Oxide Molecular Probes Enabled by Parahydrogen
Angewandte Chemie, EarlyView.Pyridine 15N‐oxides are introduced as motifs for hyperpolarization studies and biochemical applications are demonstrated. ABSTRACT Magnetic resonance (MR) is a powerful non‐invasive technique for probing structural, functional, and metabolic processes with high spatial and temporal resolution.
Ruhuai Mei +8 more
wiley +2 more sources
Representation of population exchange at level anti-crossings [PDF]
Magnetic Resonance, 2020 A theoretical framework is proposed to describe the spin dynamics driven by coherent spin mixing at level anti-crossings (LACs). We briefly introduce the LAC concept and propose to describe the spin dynamics using a vector of populations of the diabatic ...
B. A. Rodin +3 more
doaj +1 more source
Adiabatic approach for heteronuclear SABRE hyperpolarization at high magnetic field
Journal of Magnetic Resonance Open, 2023 Signal Amplification By Reversible Exchange (SABRE) is a technique aimed at enhancing weak NMR signals of heteronuclei by utilizing the non-equilibrium spin order of parahydrogen. SABRE polarization transfer takes place by means of metalorganic complexes
Danil A. Markelov +3 more
doaj +1 more source
Recent advances in the application of parahydrogen in catalysis and biochemistry
RSC Advances, 2022 Nuclear Magnetic Resonance (NMR) spectroscopy and Magnetic Resonance Imaging (MRI) are analytical and diagnostic tools that are essential for a very broad field of applications, ranging from chemical analytics, to non-destructive testing of materials and
G. Buntkowsky +6 more
semanticscholar +1 more source
Rapid Fragment Screening by 19F Steady‐State Free Precession NMR
Angewandte Chemie, Volume 138, Issue 30, 20 July 2026.19F$^{19}{\rm F}$ SSFP NMR is a broadband and very sensitive experiment for detecting protein–ligand interactions. The method enables rapid fragment screening at low micromolar protein concentrations, even for challenging drug targets such as intrinsically disordered proteins.
Laura Ruduša +8 more
wiley +2 more sources
Design of the Reactor, Selection of Catalyst for Ortho to Para Hydrogen Conversion and Preliminary Design of Cryogenic System for its Liquefaction [PDF]
Iranian Journal of Chemistry & Chemical Engineering, 2004 Hydrogen is an unusual substance in that its molecule exists in two forms, known as ortho and para, with markedly different properties. Energy level of the ortho molecule is higher than para, therefore, the latter is employed for industrial purposes ...
Naser Saghatoleslami +2 more
doaj
Journal of Physical Chemistry AHyperpolarized (HP) MRI provides enhanced signals over conventional MRI due to the increase in nuclear spin polarization by orders of magnitude compared to thermal polarization. Therefore, HP MRI can be successfully utilized toward imaging of low-density
N. Ariyasingha +16 more
semanticscholar +1 more source
Analytical Chemistry, 2022 Hyperpolarized (i.e., polarized far beyond the thermal equilibrium) nuclear spins can result in radiofrequency amplification by stimulated emission of radiation (RASER) effect.
O. G. Salnikov +6 more
semanticscholar +1 more source