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.
The animation below shows the three types of radiations that can be released when an unstable nucleus decays. Alpha particles are released by high mass, proton rich unstable nuclei. The alpha particle is a helium nucleus; it consists of two protons and two neutrons. It contains no electrons to balance the two positively charged protons. Alpha particles are therefore positively charged particles moving at high speeds. Beta particles are emitted by neutron rich unstable nuclei. Beta particles are high energy electrons.