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A typical radon test kit Fluctuation of ambient air radon concentration over one week, measured in a laboratory. The first step in mitigation is testing. No level of radiation is considered completely safe, but as it cannot be eliminated, governments around the world have set various action levels to provide guidance on when radon concentrations should be reduced.
Blue&Me Nav is an enhanced system which adds GPS navigation features. [10] It utilizes maps provided by Navteq or Tomtom. At the 2007 Bologna Motor Show, Fiat presented a new navigation extension to the Blue&Me system called Blue&Me Map, which includes a separate portable navigation unit. [11]
Radon concentrations can vary daily, and accurate radon exposure estimates require long-term average radon measurements in the spaces where an individual spends a significant amount of time. [ 174 ] Radon levels fluctuate naturally, due to factors like transient weather conditions, so an initial test might not be an accurate assessment of a ...
The EPA recommends that an initial short-term test be performed in a closed building. An initial short-term test of 2 to 90 days allows residents to be informed quickly in case a home contains high levels of radon. Long-term tests provide a better estimate of the average annual radon level. [108]
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]
Previously, FCA had assembled a different model, also named the 500e, from December 2012 to June 2019 at its Toluca Car Assembly plant in Mexico; this earlier 500e was a BEV derived from the second-generation 2007 Fiat 500 and was sold exclusively in a limited number of states within the United States market. [8] [9]
There are 39 known isotopes of radon (86 Rn), from 193 Rn to 231 Rn; all are radioactive.The most stable isotope is 222 Rn with a half-life of 3.8235 days, which decays into 218 Po
Fiat's initial purchase was a 20% stake; by January 2012, it grew to 58.5%. On 21 January 2014, Fiat completed the acquisition of the remaining 41.5% from the United Auto Workers, making Chrysler Group a wholly owned subsidiary. The total cost of acquisition was US$ 4.9 billion with an additional US$5.5 billion in pension liability. [19]