| D009556 |
Niobium |
A metal element atomic number 41, atomic weight 92.906, symbol Nb. |
Niobium-93,Niobium 93 |
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| D009678 |
Nuclear Energy |
Energy released by nuclear fission or nuclear fusion. |
Atomic Energy,Energy, Atomic,Energy, Nuclear |
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| D009688 |
Nuclear Reactors |
Devices containing fissionable material in sufficient quantity and so arranged as to be capable of maintaining a controlled, self-sustaining NUCLEAR FISSION chain reaction. They are also known as atomic piles, atomic reactors, fission reactors, and nuclear piles, although such names are deprecated. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
Nuclear Reactor,Reactor, Nuclear,Reactors, Nuclear |
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| D011221 |
Praseodymium |
An element of the rare earth family of metals. It has the atomic symbol Pr, atomic number 59, and atomic weight 140.91. |
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| D011835 |
Radiation Protection |
Methods and practices adopted to protect against RADIATION. |
Protection, Radiation |
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| D011847 |
Radioactive Fallout |
The material that descends to the earth or water well beyond the site of a surface or subsurface nuclear explosion. (McGraw-Hill Dictionary of Chemical and Technical Terms, 4th ed) |
Fallout, Radioactive,Fallouts, Radioactive,Radioactive Fallouts |
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| D011868 |
Radioisotopes |
Isotopes that exhibit radioactivity and undergo radioactive decay. (From Grant & Hackh's Chemical Dictionary, 5th ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) |
Daughter Isotope,Daughter Nuclide,Radioactive Isotope,Radioactive Isotopes,Radiogenic Isotope,Radioisotope,Radionuclide,Radionuclides,Daughter Nuclides,Daugter Isotopes,Radiogenic Isotopes,Isotope, Daughter,Isotope, Radioactive,Isotope, Radiogenic,Isotopes, Daugter,Isotopes, Radioactive,Isotopes, Radiogenic,Nuclide, Daughter,Nuclides, Daughter |
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| D002564 |
Cerium Isotopes |
Stable cerium atoms that have the same atomic number as the element cerium, but differ in atomic weight. Ce-136, 138, and 142 are stable cerium isotopes. |
Isotopes, Cerium |
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| D002587 |
Cesium Isotopes |
Stable cesium atoms that have the same atomic number as the element cesium, but differ in atomic weight. Cs-133 is a naturally occurring isotope. |
Isotopes, Cesium |
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| D005118 |
Extraterrestrial Environment |
The environment outside the earth or its atmosphere. The environment may refer to a closed cabin (such as a space shuttle or space station) or to space itself, the moon, or other planets. |
Space (Astronomy),Environment, Extraterrestrial,Environments, Extraterrestrial,Extraterrestrial Environments,Spaces (Astronomy) |
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