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Crewed Mission to Mars May Be Exposed to Unsafe Levels of Radiation, Study Warns_我的网站

一 |     Short videos posted by a Nigerian sales representative in eastern China's Zhejiang Province are helping a Chinese farm machinery producer reach overseas customers, with one TikTok post attracting more than 1.2 million views.     Onyekwelu Patrick Chinazam, known by his Chinese name Zheng Zewei, works for Zhejiang Jiying Intelligent Agricultural Machinery Equipment in Changshan county. He is responsible for expanding the company's overseas business and introducing its products to international customers in fluent Chinese.        Zheng focuses mainly on Southeast Asian markets, including Malaysia and Laos. He sells up to 16 machines a month to Malaysia.    He also runs a TikTok account featuring demonstrations of the company's products, including a tracked transporter designed for mountainous terrain. The account has attracted more than 20,000 followers and become an important channel for overseas customers to learn about Chinese farm machinery.    Zheng's connection with China began at a Confucius Institute in Nigeria. Although he studied real estate, he took up Chinese to improve his career prospects. He came to China in 2019 to pursue a master's degree in international Chinese language education in Qufu, Shandong province, and joined the farm machinery company in late 2020. He moved with the company to Changshan in 2023.    Zheng said China's well-developed shipping logistics and efficient cross-border trade services have helped smart farm machinery reach more overseas markets. He said he hopes to bring China's agricultural mechanization experience back to Nigeria.                    。    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.。

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