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Naturally occurring radioactive materials (NORM) and technologically enhanced naturally occurring radioactive materials (TENORM) consist of materials, usually industrial wastes or by-products enriched with radioactive elements found in the environment, such as uranium, thorium and potassium and any of their decay products, such as radium and radon. [1]
A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
Releases of man-made radioactive materials which occur during an industrial or research accident. For instance the Chernobyl accident. Releases which occur as a result of military activity. For example, a nuclear weapons test, which have caused a global fallout, peaking in 1963 (the Bomb pulse), and up to 2.4 million deaths by 2020. [5]
Some building materials, for example lightweight concrete with alum shale, phosphogypsum and Italian tuff, may emanate radon if they contain radium and are porous to gas. [8] Radiation exposure from radon is indirect. Radon has a short half-life (4 days) and decays into other solid particulate radium-series radioactive nuclides. These ...
An example of a fully natural ecosystem might be a meadow or old-growth forest affected by fallout from a nuclear accident such as Chernobyl or Fukushima, while a semi-natural ecosystem might be a secondary forest, farm, reservoir, or fishery that is at risk of infection from some source of radionuclides.
The claim: Drones deployed in New Jersey to search for missing radioactive material. A Dec. 16 Instagram post (direct link, archive link) links the drone sightings across the eastern U.S. to the ...
Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency (IAEA) definition).
The radiation source is deemed less than a Category 3 on the International Atomic Energy Agency’s scale — which means it is “very unlikely to cause permanent injury to individuals or contain ...