Results 51 to 60 of about 61,022 (308)

Relayed Hyperpolarization for Zero-Field Nuclear Magnetic Resonance

open access: yes, 2022
Zero- to ultralow-field nuclear magnetic resonance (ZULF NMR) is a rapidly developing form of spectroscopy that drastically reduces the size and expense of portable devices with NMR capabilities. However, signal acquisition still requires a mechanism for
Yinan, Hu   +6 more
core   +1 more source

Reversible Parahydrogen Induced Hyperpolarization of 15N in Unmodified Amino Acids Unraveled at High Magnetic Field

open access: yesAdvanced Science, 2023
Amino acids (AAs) and ammonia are metabolic markers essential for nitrogen metabolism and cell regulation in both plants and humans. NMR provides interesting opportunities to investigate these metabolic pathways, yet lacks sensitivity, especially in case
Ewoud Vaneeckhaute   +4 more
doaj   +1 more source

Simple device for dissolution and sample transfer for applications in spin-hyperpolarization

open access: yes, 2018
Rapid dissolution and transfer of samples are crucial steps in hyperpolarization methods such as dissolution dynamic nuclear polarization (dDNP) and quantum-rotor-induced polarization (QRIP).
Jannik Knoche (6008336)   +4 more
core   +1 more source

Interfacing Liquid State Hyperpolarization Methods with NMR Instrumentation

open access: yesJournal of Magnetic Resonance Open, 2022
Advances in liquid state hyperpolarization methods have enabled new applications of high-resolution NMR spectroscopy. Utilizing strong signal enhancements from hyperpolarization allows performing NMR spectroscopy at low concentration, or with high time ...
Pierce Pham   +3 more
doaj   +1 more source

Synthetic Studies Toward [1-13C]Pyruvate

open access: yesJournal of Isotopes, 2023
Magnetic resonance imaging (MRI) is limited in clinical application due to its low sensitivity. Hyperpolarization technology overcomes this limitation by enhancing molecular MRI signal.
QING Jing;JIA Xuelei;CHEN Kai;DAI Desheng;LI Guowei
doaj   +1 more source

Epilepsy‐Associated Variants of a Single SCN1A Codon Exhibit Divergent Functional Properties

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Pathogenic variants in SCN1A, which encodes the voltage‐gated sodium channel NaV1.1, are associated with multiple epilepsy syndromes exhibiting a range of clinical severity. SCN1A variants are reported in different syndromes, including Dravet syndrome, which is associated with loss‐of‐function, whereas neonatal/infantile‐onset ...
Lanie N. Liebovitz   +3 more
wiley   +1 more source

Dynamic mechanism of multiple bursting patterns in a whole-cell multiscale model with calcium oscillations

open access: yesJournal of Biological Dynamics, 2021
The dynamic mechanism of a whole-cell model containing electrical signalling and two-compartment Ca $ ^{2+} $ signalling in gonadotrophs is investigated.
Xiaowen Xiong, Yanqiu Li, Dongmei Zheng
doaj   +1 more source

Over 20% 13C Hyperpolarization for Pyruvate Using Deuteration and Rapid SLIC-SABRE in Mictrotesla Fields

open access: yes, 2023
Carbon-13 hyperpolarized pyruvate is about to become the next-generation contrast agent for molecular magnetic resonance imaging of cancer and other diseases.
Laurynas, Dagys   +10 more
core   +1 more source

Toward C13 hyperpolarized biomarkers produced by thermal mixing with hyperpolarized X129e [PDF]

open access: yesThe Journal of Chemical Physics, 2009
The C13 NMR signal of acetic acid 1-C13-AcH is enhanced by polarization transfer from hyperpolarized X129e using a thermal mixing procedure. 1-C13-AcH acid and hyperpolarized X129e are mixed as gases to disperse X129e in the acetic acid. The mixture is frozen with liquid N2 at 0.5 T.
Natalia, Lisitza   +5 more
openaire   +2 more sources

A Depolarizing Leak in Sodium Bicarbonate Cotransporter NBCe1 Causes Brain Edema

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objectives SLC4A4 encodes electrogenic sodium bicarbonate cotransporter NBCe1, prominently expressed in kidney and brain. Recessive loss‐of‐function variants in SLC4A4 cause proximal renal tubular acidosis, no brain edema. In the brain, NBCe1 is expressed by astrocytes, where it regulates pH and mediates astrocyte volume changes.
Quinty Bisseling   +16 more
wiley   +1 more source

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