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戴尔G系列“轻追击”游戏发布：窄边框OLED屏幕_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.”。1月9日，据外媒报道，戴尔发布了最新的G5 15、G7 15和G7 17轻追击游戏书，搭载了最新的RTX移动图形卡，均为窄边框。据报道，戴尔G5 15（5590）/G7 15（7590）/G7 17（7790）是戴尔发布的三款新型笔记本电脑。CPU是Intel 8代标准电压处理器，16GB内存，图形卡为RTX 2080 MAX-Q，固态硬盘为1TB NVMe。在屏幕侧，可以从模型中看到三个模型的大小。
B | 标准分辨率为fhd@60Hz。此外，这三款笔记本都有fhd@144hz版本。两个15.6英寸版本也有UHD（4K）OLED屏幕，400 nit亮度和60 Hz刷新率。萧编辑还预测，OLED屏幕将成为笔记本电脑的高端选择，在上一篇文章“2019年笔记本电脑预测：2K屏幕大量出现，MX 250拥有介绍和个人展示的旗帜”。现在预计将有更多的制造商加入OLED阵营。
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