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In the mining industry, the exposure is traditionally measured in working level (WL), and the cumulative exposure in working level month (WLM); 1 WL equals any combination of short-lived 222 Rn daughters (218 Po, 214 Pb, 214 Bi, and 214 Po) in 1 liter of air that releases 1.3 × 10 5 MeV of potential alpha energy; [43] 1 WL is equivalent to 2. ...
Radiation exposure from radon is indirect. The health hazard from radon does not come primarily from radon itself, but rather from the radioactive products formed in the decay of radon. [1] The general effects of radon to the human body are caused by its radioactivity and consequent risk of radiation-induced cancer. Lung cancer is the only ...
This is one of the largest collections of public domain images online (clip art and photos), and the fastest-loading. Maintainer vets all images and promptly answers email inquiries. Open Clip Art – This project is an archive of public domain clip art. The clip art is stored in the W3C scalable vector graphics (SVG) format.
Radon is a major cause of cancer; it is estimated to contribute to ~2% of all cancer related deaths in Europe. [1] Radium, like radon, is radioactive and is found in small quantities in nature and is hazardous to life if radiation exceeds 20-50 mSv/year. Radium is a decay product of uranium and thorium. [2]
Openclipart, also called Open Clip Art Library, is an online media repository of free-content vector clip art.The project hosts over 160,000 free graphics and has billed itself as "the largest community of artists making the best free original clipart for you to use for absolutely any reason".
The Coexist image created by Piotr Młodożeniec. The Coexist image (often styled as "CoeXisT" or "COEXIST") is an image created by Polish, Warsaw-based graphic designer Piotr Młodożeniec [] in 2000 as an entry in an international art competition sponsored by the Museum on the Seam for Dialogue, Understanding and Coexistence.
A handwritten note atop a baby Jesus figurine, anonymously dropped off at a fire station in Fort Collins, Colorado on Dec. 19, 2024. The figurine had been reported as stolen on Dec. 15, 2024.
1.52 radon-221: 25.7 1.54 americium-244m: 26 1.6 uranium-235m: 26 1.6 astatine-205: 26.2 1.57 lead-214: 26.8 1.61 mendelevium-255: 27 1.6 bismuth-199: 27 1.6 einsteinium-248: 27 1.6 mendelevium-254m: 28 1.7 radon-209: 28.5 1.71 fermium-250: 30.4 1.82 thorium-226: 30.57 1.834 astatine-206: 30.6 1.84 bismuth-200m1: 31 1.9 plutonium-232: 33.7 2.02 ...