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Plutonium-242 (242 Pu or Pu-242) is the second longest-lived isotope of plutonium, with a half-life of 375,000 years. The half-life of 242 Pu is about 15 times that of 239 Pu; so it is one-fifteenth as radioactive, and not one of the larger contributors to nuclear waste radioactivity.
A second study suggested carcinogenic effects were unlikely and that the primary risk would be associated with developmental effects due to exposure in pregnancy and neonates. [109] Two businessmen who knowingly sold the contaminated feed ingredient received two-year suspended sentences for their role in the crisis.
Surface exposure dating is a collection of geochronological techniques for estimating the length of time that a rock has been exposed at or near Earth's surface. Surface exposure dating is used to date glacial advances and retreats, erosion history, lava flows, meteorite impacts, rock slides, fault scarps, cave development, and other geological events.
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Many polycarbonate grades are used in medical applications and comply with both ISO 10993-1 and USP Class VI standards (occasionally referred to as PC-ISO). Class VI is the most stringent of the six USP ratings. These grades can be sterilized using steam at 120 °C, gamma radiation, or by the ethylene oxide (EtO) method. [20]
SmartAsset ranked 2,000 of the largest U.S. zip codes based on the projected average dollar increase in home prices between August 2024 and August 2025.
Hunter Biden has been convicted of federal gun charges and federal tax evasion charges. President Joe Biden pardoned his son alleging an unfair process.