Results 11 to 20 of about 18,954,287 (311)

High-resolution solid state NMR experiments for the characterization of calcium phosphate biomaterials and biominerals [PDF]

open access: yes, 2011
Calcium phosphates form a vast family of biominerals, which have attracted much attention in fields like biology, medicine, and materials science, to name a few.
Hanna, John   +55 more
core   +5 more sources

Sample illumination device facilitates in situ light-coupled NMR spectroscopy without fibre optics

open access: yesCommunications Chemistry, 2022
In situ illumination of liquid-state NMR samples allows to characterise light-dependent chemical and biological phenomena, but, in practice, the position of an NMR sample deep within the bore of a spectrometer magnet renders such illumination challenging.
Jack E. Bramham, Alexander P. Golovanov
doaj   +1 more source

Pseudo-resonance structures in chiral alcohols and amines and their possible aggregation states

open access: yesFrontiers in Chemistry, 2022
We now report that some chiral compounds, like alcohols, which are not sterically hindered atropisomers nor epimer mixtures, exhibit two sets of simultaneous NMR spectra in CDCl3.
Huajie Zhu   +21 more
doaj   +1 more source

Sensitivity Enhancement of Liquid-State NMR and Improvement of the INPHARMA Method [PDF]

open access: yes, 2022
In the presented work the possibility of signal enhancement of high-resolution nuclear-magnetic-resonance (NMR) in aqueous solution, with the intent of application to macromolecular biomolecules, was investigated. Using stable radicals and microwave irradiation at low magnetic field (0.34 T), fast sample transfer to a high magnetic field (14.09 T) and ...
Reese, Marcel   +4 more
openaire   +3 more sources

Quantum Chemical Calculation and Simulation of HSQC Experiments in Liquid-State NMR

open access: yesChinese Journal of Magnetic Resonance, 2021
Due to its high sensitivity and resolution, the heteronuclear single quantum correlation (HSQC) experiment is widely used for nuclear magnetic resonance (NMR)-based structural elucidation and research on solution state macromolecules. However, optimizing
HUANG Shan-shan   +3 more
doaj   +1 more source

Liquid Nuclear Magnetic Resonance (NMR) Spectroscopy in Transition—From Structure Elucidation to Multi-Analysis Method

open access: yesSeparations, 2023
As early as 1946, Felix Bloch and Edward Mills Purcell detected nuclear magnetic resonance signals, earning themselves the Nobel Prize in 1952. The same year saw the launch of the first commercial nuclear magnetic resonance (NMR) spectrometer. Since then,
Thomas Kuballa   +3 more
doaj   +1 more source

Solid-state NMR spectroscopy on complex biomolecules [PDF]

open access: yes, 2010
Biomolecular applications of NMR spectroscopy are often merely associated with soluble molecules or magnetic resonance imaging. However, since the late 1970s, solid-state NMR (ssNMR) spectroscopy has demonstrated its ability to provide atomic-level ...
NMR Spectroscopy   +7 more
core   +1 more source

Exploring High-resolution Magic Angle Spinning (HR-MAS) NMR Spectroscopy for Metabonomic Analysis of Apples

open access: yesCHIMIA, 2012
Classical liquid-state high-resolution (HR) NMR spectroscopy has proved a powerful tool in the metabonomic analysis of liquid food samples like fruit juices.
Martina Vermathen   +2 more
doaj   +1 more source

NMR Assignments of 6-(4-chlorophenoxy)-tetrazolo[5,1-a]phthalazine

open access: yesChinese Journal of Magnetic Resonance, 2020
6-(4-chlorophenoxy)-tetrazolo[5,1-a]phthalazine is a national class I innovative antiepileptic drug candidate in clinical trials with independent intellectual property rights.
WANG Si-hong   +5 more
doaj   +1 more source

NMR Study on the Mechanism of Cytochrome c Methionine Oxidation

open access: yesChinese Journal of Magnetic Resonance, 2023
Mitochondria generate reactive oxygen species (ROS) during respiration. Low levels of ROS are conducive to signal transduction, whereas excessive accumulation of ROS can lead to protein oxidative modification.
ZHAO Beibei   +5 more
doaj   +1 more source

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