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Related Concept Videos

Nuclear Magnetic Resonance (NMR): Overview01:07

Nuclear Magnetic Resonance (NMR): Overview

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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.
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Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
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The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
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Atomic Nuclei: Nuclear Magnetic Moment00:59

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All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...
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The process of converting very light nuclei into heavier nuclei is also accompanied by the conversion of mass into large amounts of energy, a process called fusion. The principal source of energy in the sun is a net fusion reaction in which four hydrogen nuclei fuse and ultimately produce one helium nucleus and two positrons.
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Real Time RT-PCR02:57

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Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
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Exploring the Arginine Methylome by Nuclear Magnetic Resonance Spectroscopy
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Real-time optimization of nuclear magnetic resonance experiments.

Y-Q Song1, Yiqiao Tang1, M D Hürlimann1

  • 1Schlumberger-Doll Research, Cambridge, MA 02139, USA.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)
|February 25, 2018
PubMed
Summary

This study introduces real-time optimization for Nuclear Magnetic Resonance (NMR) experiments. This adaptive approach improves data acquisition efficiency and quality compared to traditional static methods.

Keywords:
NMRReal-time optimizationStochastic analysis

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Area of Science:

  • Chemistry
  • Physics
  • Biophysics

Background:

  • Standard Nuclear Magnetic Resonance (NMR) experiments rely on fixed pulse sequences and parameters.
  • These predetermined settings are often not ideal for specific sample characteristics, leading to suboptimal data acquisition.
  • This can limit the efficiency and quality of results in various NMR applications.

Purpose of the Study:

  • To investigate real-time optimization techniques for enhancing NMR experiments.
  • To demonstrate the advantages of adaptive measurement strategies over static approaches.
  • To improve both the speed and quality of data collection in NMR.

Main Methods:

  • Exploration of a novel class of real-time optimization methods for NMR.
  • Utilizing stochastic analyses on acquired NMR data.
  • Dynamically updating and optimizing subsequent NMR measurements based on real-time feedback.

Main Results:

  • Demonstrated superiority of real-time optimization over static methods in NMR.
  • Significant improvements in the efficiency of data acquisition.
  • Enhanced quality of acquired NMR data across a diverse range of experiments.

Conclusions:

  • Real-time optimization offers a more effective strategy for NMR experiments.
  • Adaptive NMR methods provide superior performance compared to conventional static approaches.
  • This approach holds promise for advancing various fields reliant on NMR spectroscopy.