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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.2675
|2 doi
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|a eng
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|a Gal, Maayan
|e verfasserin
|4 aut
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|a A capacitively coupled temperature-jump arrangement for high-resolution biomolecular NMR
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|c 2010
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|a Text
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|a ƒaComputermedien
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|a Date Completed 09.02.2011
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a 2010 John Wiley & Sons, Ltd.
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|a A simple design for performing rapid temperature jumps within a high-resolution nuclear magnetic resonance (NMR) setting is presented and exemplified. The design is based on mounting, around a conventional NMR glass tube, an inductive radiofrequency (RF) irradiation coil that is suitably tuned by a resonant circuit and is driven by one of the NMR's console high-power RF amplifiers. The electric fields generated by this coil's thin metal strips can lead to a fast and efficient heating of the sample, amounting to temperature jumps of ≈ 20 °C in well within a second-particularly in the presence of lossy dielectric media like those provided by physiological buffers. Moreover, when wound around a 4-mm NMR tube, the resulting device fits a conventional 5-mm inverse probe and is wholly compatible with the field homogeneities and sensitivities expected for high-resolution biomolecular NMR conditions. The performance characteristics of this new system were tested using saline solutions, as well as on a lyotropic liquid crystal capable of undergoing nematic → isotropic transitions in the neighborhood of ambient temperature. These settings were then incorporated into the performance of a new kind of single-scan 2D NMR spectroscopy acquisition, correlating the anisotropic and isotropic patterns elicited by solutes dissolved in such liquid-crystalline systems, before and after a sudden temperature jump occurring during an intervening mixing period
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Frydman, Lucio
|e verfasserin
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|t Magnetic resonance in chemistry : MRC
|d 1985
|g 48(2010), 11 vom: 01. Nov., Seite 842-7
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|x 1097-458X
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|g volume:48
|g year:2010
|g number:11
|g day:01
|g month:11
|g pages:842-7
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|u http://dx.doi.org/10.1002/mrc.2675
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