傲慢与偏见

美方个别官员攻击中方科技企业 外交部：捏造事实、颠倒黑白_我的网站

A |     A team of scientists has discovered a likely explanation for why one may feel exhausted after engaging in intense cognitive work.,In their study, published in the Current Biology last week, the researchers argue that intense cognitive work, when it lasts for several hours, results in the buildup of potentially toxic byproducts in the prefrontal cortex part of the human brain, which then affects a person’s behavior.,“Influential theories suggested that fatigue is a sort of illusion cooked up by the brain to make us stop whatever we are doing and turn to a more gratifying activity,” Mathias Pessiglione of Pitié-Salpêtrière University in Paris, said as quoted in a news release by Cell Press. “But our findings show that cognitive work results in a true functional alteration—accumulation of noxious substances—so fatigue would indeed be a signal that makes us stop working but for a different purpose: to preserve the integrity of brain functioning.”,During the course of their research, the team employed magnetic resonance spectroscopy to monitor the brain chemistry of two groups of people during a workday, with one group performing easy cognitive tasks while the other engaged in more complex mental activities.,Only the latter group ended up exhibiting signs of fatigue, as well as a tendency to favor “options proposing rewards at short delay with little effort,” as the news release put it.,AmericasChild Survives After 7 Minutes Without Blood Flow to Brain During Surgery, US Cardiologist Reveals11 August, 16:41 GMT,Furthermore, members of that group had higher levels of glutamate in the synapses of the prefrontal cortex, leading the researchers to suggest that the accumulation of glutamate “makes further activation of the prefrontal cortex more costly,” and thus a mentally exhaustive workday makes cognitive control more difficult.,Unfortunately, there seems to be no fancy way to deal with this problem other than the tried and tested method that is probably as old as history itself.,“I would employ good old recipes: rest and sleep!” Pessiglione remarked. “There is good evidence that glutamate is eliminated from synapses during sleep.”。

B |     中新网北京8月24日电(记者 李京泽 李晓喻)中国外交部发言人林剑24日主持例行记者会。         　　有记者提问：近日，美方个别官员在社媒攻击中方科技企业，妄称有关中企的高风险技术将造成间谍活动、网络攻击和网络中断风险，并敦促美国在西半球伙伴国迅速转向可信赖的供应商，以保护其公民和国家主权。中方对此有何评论？          　　林剑：有关言论捏造事实、颠倒黑白，是赤裸裸的科技霸凌与单边胁迫，中方对此坚决反对。         　　中国科技企业技术先进、性价比高、服务安全高效，在海外开展业务期间，严格遵守各国法律法规和行业规范，受到当地合作伙伴和民众高度认可和青睐，也为当地经济社会发展和就业作出积极贡献，是名副其实、可信赖的供应商。

C | 倒是美方长期在拉美和加勒比搞监听监控、网络攻击，让美洲国家感到不安全、不可信赖。                        　　我们奉劝美方停止政治操弄，停止干涉主权国家自主选择合作伙伴的权利，多做有利于拉美和加勒比地区繁荣稳定的实事。

D | (完） 【编辑:胡寒笑】。

Current article:http://ghb9.bianhajieleigoukusunmen.pics/news/20260826_3959.html

Published on:06:28:59