| 单词 | cobalt 60 |
| 例句 | To run the experiment she had in mind, Wu needed to reduce the temperature of radioactive cobalt 60 nuclei until the particles almost stopped moving. The Little-Known Origin Story behind the 2022 Nobel Prize in Physics 2023-03-16T04:00:00Z Given all that, replacing cobalt 60 machines does not always go well. Radioactive Material Is Basically Everywhere and That’s a Problem 2022-03-11T05:00:00Z The cobalt 60 was found several hundred feet from the truck, apparently carried off by the thieves or by curious people in the area. 6 Hospitalized in Mexico With Signs of Radiation Exposure 2013-12-06T22:30:30Z Increasingly, cobalt 60 is used to irradiate spices to remove pathogens such as bacteria; no traces of radioactive material remains after the sterilization. Mexican Truck Thieves Are Likely to Die 2013-12-05T16:50:22Z Earlier Wednesday the theft was publicized by the Internatioal Atomic Energy Agency, the United Nations nuclear monitor, reflecting the concern about the dangers of exposure to cobalt 60. Part of Radioactive Cargo Stolen in Mexico Is Recovered 2013-12-05T01:15:54Z But it was not immediately clear from the reports whether the cobalt 60 cargo was still in it. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z In mid-May, Mr. Watson ventured to the well site, where robotic submersibles were sent down to the seafloor with cobalt 60, a radioactive isotope that generates gamma rays. Failure of Rig?s Last Line of Defense Tied to Myriad Factors 2010-06-21T03:23:00Z The E.P.A. guide also warns that cobalt 60 is known to cause cancer. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z After a two-day hunt, a stolen truck containing the lethal radioactive material cobalt 60 was found in the rural Mexican town of Hueypoxtla. Mexican Truck Thieves Are Likely to Die 2013-12-05T16:50:22Z But cobalt 60 is one of the ingredients commonly cited as a possible component of a dirty bomb, a combination of explosives and radioactive material. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z Large amounts of cobalt 60 are also used to sterilize spices and some foods because its powerful gamma rays kill bacteria and other pathogens without damaging the products or leaving them radioactive. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z In an online guide to radiation protection, the E.P.A. identifies cobalt 60 as a substance used in a range of industrial and medical applications, including radiotherapy in hospitals. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z “Because it emits such strong gamma rays, external exposure to cobalt 60 is also considered a significant threat,” it says. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z Industrial and medical users periodically replace used cobalt 60 with fresh supplies because, as with all radioactive isotopes, its emissions slowly weaken over time; its half-life is 5.27 years. Dangerous Radioactive Substance Is Stolen in Mexico 2013-12-04T17:05:13Z |
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