Thyroid hormone treatment in thyroid disease. Thyroid Hormone Treatment Brochure by the American Thyroid Association; Elaborate article about the use of thyroid drugs Written by an MD; Thyroid Disease Manager Collection of elaborate medical articles on thyroid disease, including information on thyroid hormones
This magnetic field makes the possible spin-states of the nucleus differ in energy, and using NMR techniques the spins can be made to create observable transitions between the spin states. Common NMR active nuclei are 1H, 13C, 31P, 15N, 29Si, and many more.wo-dimensional NMR spectra have two frequency axes, which can correspond to like nuclei (i.e. 1H-1H) or different nuclei (i.e. 1H-13C), and a third dimension of peak intensity. More recently, NMR experiments have been developed that contain information in three, four, and even five dimensions.
Nuclei with spin = 0. These nuclei have no NMR properties except for isotope shifts on nearby nuclei: 16 O, 12 C, 32 S. Principal NMR active nuclei with spin = Â½ . These nuclei are easily observed, give sharp lines and easily observed J coupling.100% abundance: 1 H, 19 F, 31 P, 169 Tm, 103 Rh, 89 Y. Of these, Rh and Y are low-frequency nuclei which may require special hardware.uclear Properties: these determine what kind of hardware is needed and what experiments can be done on a nucleus (see 11-DATA-1 Main group, Transition metals, Lanthanides). - Spin (I I = 0, the nucleus cannot be directly observed. Nuclei with I = Â½ have excellent NMR properties (sharp lines).