At the onset of the 20th century, electric cars powered by lead-acid batteries outnumbered gas-powered cars. The internal combustion engine ultimately won out, in part because those batteries had a range of just 30 miles. But Thomas Edison believed a nickel-iron battery could extend that range to as much as 100 miles, while also having a long life and recharging times of seven hours. An international team of scientists has revived Edison's concept of a nickel-iron battery and created their own version, according to a paper published in the journal Small.
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Использование гаджетов и просмотр сериалов по вечерам ухудшают качество сна, заявила врач-сомнолог Карема Магомедова. О пагубном влиянии этих привычек она предупредила в беседе с РИА Новости.
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不过，经过多年大规模建设，铁路、公路等传统基建的投资高峰期已过，未来用钢需求增长可能放缓。但存量需求依然可观，加上城市群及都市圈互通、地下管网更新等重大项目，仍能为建筑用钢提供一定支撑。