Journal ArticleDOI
Line broadening interference for high-resolution nuclear magnetic resonance spectra under inhomogeneous magnetic fields
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TLDR
A method termed as line broadening interference (LBI) is proposed to provide high-resolution information under inhomogeneous magnetic fields by employing certain gradients in the indirect dimension to interfere the magnetic-field inhomogeneity.Abstract:
Nuclear magnetic resonance spectroscopy serves as an important tool for analyzing chemicals and biological metabolites. However, its performance is subject to the magnetic-field homogeneity. Under inhomogeneous fields, peaks are broadened to overlap each other, introducing difficulties for assignments. Here, we propose a method termed as line broadening interference (LBI) to provide high-resolution information under inhomogeneous magnetic fields by employing certain gradients in the indirect dimension to interfere the magnetic-field inhomogeneity. The conventional spectral-line broadening is thus interfered to be non-diagonal, avoiding the overlapping among adjacent resonances. Furthermore, an inhomogeneity correction algorithm is developed based on pattern recognition to recover the high-resolution information from LBI spectra. Theoretical deductions are performed to offer systematic and detailed analyses on the proposed method. Moreover, experiments are conducted to prove the feasibility of the proposed method for yielding high-resolution spectra in inhomogeneous magnetic fields.read more
Citations
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High-resolution NMR spectroscopy in inhomogeneous fields
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Microwave-Pumped Electric-Dipole Resonance Absorption for Noninvasive Functional Imaging
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High Resolution Nuclear Magnetic Resonance Spectroscopy on Biological Tissue and Metabolomics.
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Ultrafast multidimensional nuclear magnetic resonance technique: A proof of concept based on inverse-k-space for convenient and efficient performance
TL;DR: In this article, an inverse k-space along with a systematic processing strategy was proposed to improve the quality of the ultrafast spectrum in terms of lineshape, signal-to-noise ratio, and adaptability to magnetic field inhomogeneity.
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Partial-Homogeneity-Based Two-Dimensional High-Resolution Nuclear Magnetic Resonance Spectroscopy under Inhomogeneous Magnetic Fields.
TL;DR: A method based on the concept of partial homogeneity is developed to offer two-dimensional (2D) high-resolution NMR spectra under inhomogeneous fields under fields where inhomogeneity primarily distributes along a single orientation.
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An Algorithm for License Plate Recognition Applied to Intelligent Transportation System
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High-resolution NMR spectra in inhomogeneous fields via IDEAL (intermolecular dipolar-interaction enhanced all lines) method.
TL;DR: Intermolecular double-quantum technique is used to yield high-resolution NMR spectra in inhomogeneous magnetic fields and parameters are consistent with those extracted from one-dimensional spectra obtained in a homogeneous field.
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TL;DR: Ultrafast multidimensional NMR techniques are used to monitor the adenine-induced folding of an adenin-sensing riboswitch in real time, with nucleotide-resolved resolution, to determine the structure of RNA folding intermediates and conformational trajectories.