Magnetic Shielding of the Proton Resonance in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>O, and Minera

Gutowsky, H. S.; McClure, R.

doi:10.1103/physrev.81.276

Cited by 29 publications

(3 citation statements)

References 5 publications

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“…Building upon the detection of the NMR phenomenon in bulk matter [6,9], i.e. from nuclei in liquids and solids, new experiments [11][12][13][14][15][16][17][18][19][20] emerged with the most unexpected results. The surprise was in a dependence of resonance frequency on the chemical environment of nuclei.…”

Section: Universal Significance Of Chemical Shiftmentioning

confidence: 99%

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Derivative NMR spectroscopy for J-coupled multiplet resonances using short time signals (0.5 KB) encoded at low magnetic field strengths (1.5T). Part I: water suppressed

Belkić

2020

J Math Chem

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The theme of this study is within the realm of basic nuclear magnetic resonance (NMR) spectroscopy. It relies upon the mathematics of signal processing for NMR in analytical chemistry and medical diagnostics. Our objective is to use the fast Padé transform (both derivative and nonderivative as well as parametric and nonparametric) to address the problem of multiplets from J-coupling appearing in total shape spectra as completely unresolved resonances. The challenge is exacerbated especially for short time signals (0.5 KB, no zero filling), encoded at a standard clinical scanner with the lowest magnetic field strengths (1.5T), as is the case in the present investigation. Water has partially been suppressed in the course of encoding. Nevertheless, the residual water content is still more than four times larger than the largest among the other resonances. This challenge is further sharpened by the following question: Can the J-coupled multiplets be resolved by an exclusive reliance upon shape estimation alone (nonparametric signal processing)? In this work, the mentioned parametric signal processing is employed only as a gold standard aimed at cross-validating the reconstructions from nonparametric estimations. A paradigm shift, the derivative NMR spectroscopy, is at play here through unprecedentedly parametrizing total shape spectra (i.e. solving the quantification problem) by sole shape estimators without fitting any envelope.

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Section: Universal Significance Of Chemical Shiftmentioning

confidence: 99%

“…Chemical shifts have been measured not only in single compounds [11][12][13][14][15][16][17][18][19], but also in mixtures of molecules or chemical compounds [20]. The explanation was in electronic shielding of nuclei.…”

Section: Universal Significance Of Chemical Shiftmentioning

confidence: 99%

Derivative NMR spectroscopy for J-coupled multiplet resonances using short time signals (0.5 KB) encoded at low magnetic field strengths (1.5T). Part I: water suppressed

Belkić

2020

J Math Chem

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“…In Table I are listed the values of d InK/dp calculated from (4) and (1) next to the experimental values of d ]nK/dp. The calculated values of a kiK/dp differ from those of Rao by the term a(K~K 0 )/K, which arises from the difference between (la) and (2a).…”

mentioning

confidence: 99%