Бывшему корреспонденту американской газеты The New York Times и агентства Bloomberg Джону Вароли светит 20 лет тюрьмы в случае возвращения в США. Об этом журналист заявил в ходе выступления на Невском форуме друзей России, его слова приводит ТАСС.
They also needed an alternative to conventional X-rays. In a clinical linac, X-ray photons are produced by dumping high-energy electrons into a bremsstrahlung target, which is made of a material with a high atomic number, like tungsten or copper. The target slows the electrons, converting their kinetic energy into X-ray photons. It’s an inherently inefficient process that wastes most of the beam power as heat and makes it extremely difficult to reach the ultrahigh dose rates required for FLASH. High-energy electrons, by contrast, can be switched on and off within milliseconds. And because they have a charge and can be steered by magnets, electrons can be precisely guided to reach tumors deep within the body. (Researchers are also investigating protons and carbon ions; see the sidebar, “What’s the Best Particle for FLASH Therapy?”)
，推荐阅读新收录的资料获取更多信息
Chalk river restoration is complete after two years
Goals from Lucy Bronze and Georgia Stanway made it two wins from two in England’s bid to qualify for the 2027 World Cup, with attention now turning to a hugely important game against Spain at Wembley in April.