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Related Concept Videos

Applications Of NMR In Biology01:25

Applications Of NMR In Biology

4.4K
Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics  for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
4.4K
Classification of Signals01:30

Classification of Signals

1.3K
In signal processing, signals are classified based on various characteristics: continuous-time versus discrete-time, periodic versus aperiodic, analog versus digital, and causal versus noncausal. Each category highlights distinct properties crucial for understanding and manipulating signals.
A continuous-time signal holds a value at every instant in time, representing information seamlessly. In contrast, a discrete-time signal holds values only at specific moments, often denoted as x(n), where...
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¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.4K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.4K
NMR Spectrometers: Overview01:20

NMR Spectrometers: Overview

2.0K
NMR spectrometers consist of a strong magnet, a radiofrequency transmitter, and a detector attached to a computer console for recording spectra of samples containing NMR-active nuclei. In first-generation NMR instruments called continuous-wave spectrometers, the resonance frequencies of the nuclei are determined by frequency-sweep or field-sweep methods. The magnetic field strength is fixed and the rf signal is swept in the former, while the radiofrequency signal is fixed and the magnetic field...
2.0K
NMR Spectrometers: Resolution and Error Correction01:14

NMR Spectrometers: Resolution and Error Correction

997
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
997
Nuclear Magnetic Resonance (NMR): Overview01:07

Nuclear Magnetic Resonance (NMR): Overview

6.5K
Nuclear magnetic resonance (NMR) is a phenomenon exhibited by certain nuclei that can absorb characteristic radio frequency radiation under certain conditions. NMR has been extensively applied in molecular spectroscopy and medical diagnostic imaging. In both these applications, the molecule or subject under study is placed in a magnetic field and irradiated with radio frequency energy.
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
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Updated: Dec 31, 2025

Asthma Detection Research Based on Voice Signal Processing and Machine Learning
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NMR signal processing, prediction, and structure verification with machine learning techniques.

Carlos Cobas1

  • 1Mestrelab Research, Santiago de Compostela, Spain.

Magnetic Resonance in Chemistry : MRC
|January 9, 2020
PubMed
Summary
This summary is machine-generated.

Machine learning (ML) and deep learning (DL) are revolutionizing Nuclear Magnetic Resonance (NMR) spectroscopy. These advanced computational methods enhance NMR signal processing and small molecule analysis, aiding in structure verification and property prediction.

Keywords:
AIASVNMRdeep learningmachine learningpredictionstructure verification

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Area of Science:

  • Analytical Chemistry
  • Computational Chemistry
  • Spectroscopy

Background:

  • Machine learning (ML) has a long history in Nuclear Magnetic Resonance (NMR) spectroscopy.
  • Recent advancements in deep learning (DL), coupled with increased data and computational power, have accelerated ML applications in NMR.
  • ML/DL algorithms are versatile, excelling in classification, regression, clustering, and dimensionality reduction for large datasets.

Purpose of the Study:

  • To review the diverse applications of ML and DL in NMR signal processing.
  • To explore the use of ML/DL in the analysis of small molecules using NMR data.
  • To highlight ML/DL's role in automatic structure verification and prediction of NMR observables.

Main Methods:

  • Focus on ML/DL techniques applied to NMR data.
  • Analysis of NMR signal processing methodologies.
  • Examination of small molecule analysis strategies within NMR.

Main Results:

  • ML/DL methods show significant success in various NMR applications like metabonomics, clinical diagnosis, and relaxometry.
  • These techniques are effectively utilized for processing and analyzing NMR signals from small molecules.
  • Demonstrated utility in automated structure verification and prediction of NMR spectral properties.

Conclusions:

  • ML and DL are powerful tools transforming NMR data analysis.
  • The application of ML/DL in NMR signal processing and small molecule analysis is rapidly expanding.
  • Future potential lies in further integration for enhanced structure elucidation and property prediction in NMR.