If you do business online, Charge.com will enable you to accept credit cards on your website (and eBay) in real-time, and we will also give you our simple-to-use, web-based credit card processing virtual terminal so you can easily process phone and mail order transactions manually.
Q: A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 183 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. The beam is directed onto a 0.220-kg tumor, which receives a biologically equivalent dose of 153 rem.
Beryllium is also used in nuclear reactors as a reflector or moderator of neutrons. The oxide has a very high melting point making it useful in nuclear work as well as having ceramic applications. Biological role. Beryllium and its compounds are toxic and carcinogenic.t one time it was even thought that beryllium powder would be used as a fuel for rockets on account of the colossal amount of heat which it releases when it is burnt. Now less than 500 tons of metal are refined each year because it is dangerously toxic.