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The isotope selenium-75 has radiopharmaceutical uses. For example, it is used in high-dose-rate endorectal brachytherapy, as an alternative to iridium-192. [8]In paleobiogeochemistry, the ratio in amount of selenium-82 to selenium-76 (i.e, the value of δ 82/76 Se) can be used to track down the redox conditions on Earth during the Neoproterozoic era in order to gain a deeper understanding of ...
Much of the ongoing untitled series centres around questions of resistance and representation. [22] The traces that one leaves behind in place—the traces of the self that form what Salloum refers to as the histories of the self —are videotaped by Salloum in an effort to bring the personal space into "the context of the intrinsic social and ...
In a 2019 interview, when asked what it was like to see his name in the periodic table next to Einstein, Mendeleev, the Curies, and Rutherford, Oganessian responded: [102] Not like much! You see, not like much. It is customary in science to name something new after its discoverer. It's just that there are few elements, and this happens rarely.
Connections is a science education television series created, written, and presented by British science historian James Burke.The series was produced and directed by Mick Jackson of the BBC Science and Features Department and first aired in 1978 (UK) and 1979 (US).
A telescope in the Very Large Telescope system producing four orange laser guide stars. A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
In a 2015 interview with Oganessian, the host, in preparation to ask a question, said, "You said you had dreamed to name [an element] after your teacher Georgy Flyorov." Without letting the host finish, Oganessian repeatedly said, "I did."
Coal ash is mostly composed of lead, arsenic, selenium, and mercury. Each of these minerals individually are unsafe for the human body, but scientists are unsure of how harmful the components are combined. Mercury, for example, can damage reproductive health. Lead causes developmental disorders, arsenic can lead to rashes and lesions. Kristina ...
2012 phenomenon – a range of eschatological beliefs that cataclysmic or otherwise transformative events would occur on or around 21 December 2012. This date was regarded as the end-date of a 5,126-year-long cycle in the Mesoamerican Long Count calendar and as such, festivities to commemorate the date took place on 21 December 2012 in the countries that were part of the Maya civilization ...