Search results
Results from the WOW.Com Content Network
Nitrogen-15 is a rare stable isotope of nitrogen. Two sources of nitrogen-15 are the positron emission of oxygen-15 [8] and the beta decay of carbon-15. Nitrogen-15 presents one of the lowest thermal neutron capture cross sections of all isotopes. [9] Nitrogen-15 is frequently used in NMR (Nitrogen-15 NMR spectroscopy).
A medical isotope is an isotope used in medicine. The first uses of isotopes in medicine were in radiopharmaceuticals , and this is still the most common use. However more recently, separated stable isotopes have come into use.
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
Examples include carbon-14, nitrogen-15, and oxygen-16 in the table above. Isobars are nuclides with the same number of nucleons (i.e. mass number) but different numbers of protons and neutrons. Isobars neighbor each other diagonally from lower-left to upper-right. Examples include carbon-14, nitrogen-14, and oxygen-14 in the table above.
Note that medical isotopes may be not radioactive, for example deuterium (2 H) in deuterated drug. Pages in category "Medical isotopes" The following 34 pages are in this category, out of 34 total.
O, samples enriched with the other stable isotopes can be used for isotope labeling. For example, it was proven that the oxygen released in photosynthesis originates in H 2 O, rather than in the also consumed CO 2, by isotope tracing experiments. The oxygen contained in CO 2 in turn is used to make up the sugars formed by photosynthesis.
Medical isotopes (34 P) Isotopes of ... Isotopes of nitrogen (22 P) ... Isotopes of oganesson (6 P) Isotopes of osmium (65 P) Isotopes of oxygen (22 P) P. Isotopes of ...
Pages in category "Lists of isotopes by element" ... Isotopes of nitrogen; Isotopes of nobelium; O. Isotopes of oganesson; Isotopes of osmium; Isotopes of oxygen; P.