NMR


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NMR:

see magnetic resonancemagnetic resonance,
in physics and chemistry, phenomenon produced by simultaneously applying a steady magnetic field and electromagnetic radiation (usually radio waves) to a sample of atoms and then adjusting the frequency of the radiation and the strength of the magnetic field
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NMR

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Hydrogen within the molecules can be observed and measured with NMR, so even if the molecules are different, the presence of hydrogen means that quantitative analysis is possible.
The limits of detection for the 600-MHz [sup.1]H NMR spectra were acquired using 160 scans (8 min) and acquisition parameters similar to the abovementioned [sup.1]H NMR spectra.
The identified chemical structure is plotted in Figure 1(b), and the detailed information about [sup.1]H NMR (500 MHz, DMSO-[d.sub.6]) and [sup.13]C NMR (125 MHz, DMSO-[d.sub.6]) is listed in Table S1.
The appearance of a singlet of 2H integration at 4.11 ppm in 1H NMR and the appearance of a quaternary C and a CH2 in BB/DEPT-135Adeg at 55.0 and 57.7 ppm confirms the formation of 2,2-dibromoindan-1-one 16.
Selectivity of the proposed method was evaluated by determining the resolution between fluorine signals and other nuclei while precision was investigated by consecutive NMR measurements of a fluvastatin sample (including sample preparation) over 5 different days.
took an additional step toward diverse clinical applications of quantitative NMR spectroscopy by incorporating GlycA as a part of their methodology (2), which has previously explicitly focused on lipopro tein subclass and lipid analytics (1, 13, 14).
"The frequency at which nuclei respond creates a unique spectral 'fingerprint' of their local environment within a material," said Marek Pruski, Ames Laboratory's Lead Scientist in Solid-State NMR.
LipoScience's automated clinical NMR analyzer uses a 400MHz magnet and proprietary signal processing algorithms to identify and quantify lipoprotein particle number.
The equipment and maintenance cost of [sup.1]H-NMR is also typically higher than conventional GC-MS and LC-MS platforms, but low-end bench-top NMR machines are now available which are comparably priced.
A small-scale solution to Velazquez's problem lies just a few hours south along Highway 2 in Calgary at the offices of Nanalysis Corp., creator of the NMReady, a bench-top NMR spectroscopy instrument.
Similarly, NMR technology is emerging as a standard of care in management of cardiovascular and metabolic diseases.
The polyimide and colloids were characterized by IR and NMR. The films were characterized using SEM and UV--visible spectroscopy.