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  2. Two-dimensional nuclear magnetic resonance spectroscopy

    en.wikipedia.org/wiki/Two-dimensional_nuclear...

    Almost all two-dimensional experiments have four stages: the preparation period, where a magnetization coherence is created through a set of RF pulses; the evolution period, a determined length of time during which no pulses are delivered and the nuclear spins are allowed to freely precess (rotate); the mixing period, where the coherence is ...

  3. Benchtop nuclear magnetic resonance spectrometer - Wikipedia

    en.wikipedia.org/wiki/Benchtop_nuclear_magnetic...

    The first generation of NMR spectrometers used large Electromagnets weighing hundreds of kilograms or more. Slightly smaller permanent magnet systems were developed in the 1960s-70s at proton resonance frequencies of 60 and 90 MHz and were widely used for chemical analysis using continuous wave methods, but these permanent magnets still weighed hundreds of kilograms and could not be placed on ...

  4. Nuclear Overhauser effect - Wikipedia

    en.wikipedia.org/wiki/Nuclear_Overhauser_effect

    In 2002, Kurt Wuthrich won the Nobel Prize in Chemistry for the development of nuclear magnetic resonance spectroscopy for determining the three-dimensional structure of biological macromolecules in solution, demonstrating how the 2D NOE method can be used to constrain the three-dimensional structures of large biological macromolecules. [13]

  5. Nuclear magnetic resonance spectroscopy of proteins

    en.wikipedia.org/wiki/Nuclear_magnetic_resonance...

    With unlabelled protein the usual procedure is to record a set of two-dimensional homonuclear nuclear magnetic resonance experiments through correlation spectroscopy (COSY), of which several types include conventional correlation spectroscopy, total correlation spectroscopy (TOCSY) and nuclear Overhauser effect spectroscopy (NOESY). [3] [4] A ...

  6. Nuclear magnetic resonance spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Nuclear_magnetic_resonance...

    A 900 MHz NMR instrument with a 21.1 T magnet at HWB-NMR, Birmingham, UK Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique based on re-orientation of atomic nuclei with non-zero nuclear spins in an external magnetic field.

  7. Relaxation (NMR) - Wikipedia

    en.wikipedia.org/wiki/Relaxation_(NMR)

    T 2 relaxation is a complex phenomenon, but at its most fundamental level, it corresponds to a decoherence of the transverse nuclear spin magnetization. Random fluctuations of the local magnetic field lead to random variations in the instantaneous NMR precession frequency of different spins.

  8. Nuclear spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Nuclear_spectroscopy

    Nuclear spectroscopy is a superordinate concept of methods that uses properties of a nucleus to probe material properties. [ 1 ] [ 2 ] By emission or absorption of radiation from the nucleus information of the local structure is obtained, as an interaction of an atom with its closest neighbours.

  9. Category:Nuclear magnetic resonance spectroscopy - Wikipedia

    en.wikipedia.org/wiki/Category:Nuclear_magnetic...

    Pages in category "Nuclear magnetic resonance spectroscopy" The following 22 pages are in this category, out of 22 total. This list may not reflect recent changes .