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 'Nuclear Spin Quantum Number' 
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Nuclear Spin Quantum Number
 
See Spin Quantum Number.
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The NMR, MRI relevant nuclear spin is the rotational movement of a subatomic particle (proton or neutron) around its axis. Whether a nucleus has an overall spin, depends on its amount of protons and neutrons. Nuclei with an identical number of protons and neutrons cancel out their overall spins. Nuclei with an odd number of protons or an odd number of neutrons or both have an overall spin. This spin is measured with a nuclear spin quantum number (I). The nuclear spin quantum number of a nuclei depends on the protons/neutrons which are not paired, and is a positive integer multiple of 0.5. 1H, 19F, 13C, 31P and 15N are examples of nuclei with an nuclear spin quantum number of 0.5, 2H and 14N have a nuclear spin quantum number of 1.
See also Spin Quantum Number.
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How does the proton get its spin?
Wednesday, 17 February 2010   by www.physorg.com    
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Researchers increase NMR/MRI sensitivity through hyperpolarization of nuclei in diamond
Wednesday, 5 June 2013   by phys.org    
Spin improves medical imaging
Tuesday, 25 November 2008   by www.theengineer.co.uk    
Carbomap creates 'MRI scanner for forests'
Thursday, 22 August 2013   by www.scotsman.com    
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Nuclear Magnetic ResonanceMRI Resource Directory:
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(NMR) Nuclear Magnetic Resonance is a physical phenomenon of the magnetic property of nuclei, which have a positive nuclear spin quantum number.
Under the influence of an external static magnetic field this nuclei will precess about the direction of the magnetic field with an angular frequency (Larmor frequency). Through absorption and emission of RF energy (gradients, RF coils) at the resonance frequency (Larmor equation) and the processing of this raw data by the Fourier transformation - physical, chemical, electronic, and structural information about molecules can be obtained (NMR Magnetic Resonance Spectroscopy, Magnetic Resonance Imaging).
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Further Reading:
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MRI's inside story
Thursday, 4 December 2003   by www.economist.com    
Nuclear magnetic resonance with no magnets
Wednesday, 18 May 2011   by www.physorg.com    
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A powder to enhance NMR signals
Thursday, 12 December 2013   by phys.org    
Researchers increase NMR/MRI sensitivity through hyperpolarization of nuclei in diamond
Wednesday, 5 June 2013   by phys.org    
New Paradigm for Nanoscale Resolution MRI Experimentally Achieved
Friday, 27 September 2013   by www.sciencedaily.com    
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