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A | 1月12日,一位名叫斯科特·布拉德利的加拿大高管宣布辞职。 While scientists and science fiction authors alike have long dreamed of sending crewed missions to Mars, a new study suggests these plans may hit a snag – a big one.,The authors of a yet to be peer-reviewed study argue that the participants of such a mission to Mars would end up being exposed to radiation – namely, to “energetic charged particles from Galactic and Solar origin” – both while in transit and while on the planet itself, with the “thin spacecraft shield” and “rarefied Martian atmosphere” offering little in the way of protection.,The research team attempted to gauge the impact of a simulated 1,000-day mission to Mars on various organs of the human body, and concluded that astronauts may be exposed to radiation doses above one Sievert, which is over the safe limit set by most space agencies, New Scientist points out.,“We suggest mitigation strategies such as improved ways of shielding and dietary supplements, and make recommendations for the safety of astronauts in future crewed missions to Mars,” the team wrote in the abstract of their work available on the arXiv preprint server.,Ideas about how astronauts may be protected from radiation during a mission to Mars have already been proposed, such as the concept of a radiation shield comprised of a fungus found growing at the Chernobyl Nuclear Power Plant.,Last year, one architecture studio even unveiled a project for a self-sufficient and sustainable city that would be built on the red planet itself.。在LinkedIn的一篇文章中,他透露他将辞去华为加拿大公司的高级副总裁一职,但没有透露具体原因。他也没有评论。布拉德利是华为加拿大公司的重要发言人。

B | 自从去年12月加拿大政府应美国要求扣留华为首席财务官孟万洲以来,华为加拿大分公司一直是关注的焦点。华为是加拿大重要的电信设备供应商,而布拉德利是5G加拿大委员会的主席。国家贸易集团的目标是促进5G高速无线技术的传播。加拿大政府去年对华为5G技术进行了新的安全评估,至少两家加拿大大型运营商表示,他们将启动小规模的试点项目。华为表示,布拉德利将担任华为的特别顾问,并得到布拉德利的确认。
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