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宜宾那家医院开双眼皮好
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发布时间: 2025-05-31 13:53:08北京青年报社官方账号
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There's a nor'easter roaring toward the East Coast -- and it's a ferocious mix of howling winds, drenching rain, snow and surging waves.The storm is expected to knock out power, flood neighborhoods and destroy homes along the Atlantic coast Friday and Saturday.As the high tide advances, authorities are warning residents of coastal communities to be ready to evacuate."Take this storm seriously! This is a LIFE & DEATH situation for those living along the coast, especially those ocean-exposed shorelines," the National Weather Service in Boston tweeted.Like the nor'easter in January, it could undergo bombogenesis -- or become a "bomb cyclone" -- by dropping at least 24 millibars of atmospheric pressure in 24 hours. Some forecasters predict a sudden pressure plummet Friday evening off the Atlantic coast.Here's what to expect in the next few days:Coastal flooding 881

  宜宾那家医院开双眼皮好   

Top military officials, including Defense Secretary James Mattis, warned President Donald Trump during an afternoon meeting Thursday that he risks escalating US involvement in Syria if he goes forward with the type of aggressive bombing campaign he has pressed for over the past week, according to US and western officials briefed on the conversation.Trump has pushed military leaders to develop plans for a sustained assault on Syrian regime targets in response to last weekend's chemical attack, the officials said. But Mattis and other members of the President's national security team cautioned Trump during the meeting that such a strategy could pull the US into direct conflict with Russia and Iran.The resistance has upset Trump, who wanted to take quick action and feels like the options being presented to him don't go far enough, according to the officials. 875

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This is incredibly disturbing. My staff is reaching out to the city. https://t.co/jE54kA8R9O— Senator Brad Hoylman (@bradhoylman) September 4, 2020 155

  

Their youthful brains were developing normally, with no signs of developmental, psychological or neurological problems. None had ever had a concussion. But by the end of a single football season, 24 children between the ages of 9 and 18 who had more frequent impacts to the head showed signs of damage to brain development, new research says."Repetitive head impact exposure may have a cumulative effect in the rapidly developing brains of youth and high school football players," said study co-author Gowtham Krishnan Murugesan, a radiology research assistant at UT Southwestern Medical Center in Dallas, adding that the results mirror other recent findings.The study outfitted 60 youth and high school football players who had no history of head trauma or developmental issues with a head impact telemetry system that measures the magnitude, location and direction of impacts to the head. The researchers were not looking at whether the impact resulted in a concussion, only that impact occurred.The children were sorted into two categories: high cumulative head impact players (24) and low cumulative head impact players (36).Before beginning to play, each child had a resting state functional scan, known as an fMRI; the scans were repeated at the end of football season. The researchers were trying to see how exposure to repetitive hits affects the normal "pruning" process in the brain that occurs during adolescence."Pruning is an essential part of brain development," Murugesan said, comparing the process to how a tree needs to have dead or unneeded branches cut to keep it healthy and allow it to grow."Disruption in normal pruning has been shown to be related to weaker connections between different parts of the brain," he said.After comparing the functional MRI results to the player's level of impact, the researchers found that youth in the high-impact group had damage to their brains' pruning process after one season."Our study has found a significant decrease in gray matter pruning in the frontal default mode network, which is involved in higher cognitive functions, such as the planning and controlling of social behaviors, " Murugesan said.Although the "teenage years are a critical time for brain development, brain remodeling or synaptic pruning, this was a short-term study and did not follow the players longitudinally over several years. We don't really know the full application," said Dr. Julian Bailes, director of neurosurgery and co-director of the NorthShore University HealthSystem Neurological Institute, who was not involved in the research.Weill Cornell neurologist Dr. Richard Isaacson, who was also not involved in the study, called the research "early" and said the results don't necessarily "translate to a clinical or cognitive outcome." More research is needed to see whether the decline in brain pruning permanently affected the child's cognitive function or whether the brain's natural plasticity allowed it to repair itself."I would call this a pilot study," Isaacson said. "The call to action would be that we need more robust longitudinal studies with a pre- and a post-assessment of more than brain imaging. The study should also measure cognitive and neurological function and look for changes."As we learn more about the issue, Isaacson said, parents should do everything they can to limit contact in sports, "especially in practice before games, where studies show the majority of contact occurs." 3464

  

Trade war fears wiped more than 1,100 points off the Dow in just two days. It was Wall Street's worst week in more than two years.Investors are increasingly worried that President Trump's crackdown on China will trigger a fierce response that darkens the otherwise bright economic outlook.The Dow dropped 425 points, or 1.8%, on Friday, sinking back into a "correction" — a decline of 10% from the all-time high in January. The Dow finished at its lowest point since November.All three major indexes took their biggest weekly tumbles since January 2016.The market failed to stage a rebound from Thursday's plunge, which erased 734 points from the Dow.China vowed on Thursday that it would fight a potential trade war "until the end.""We have this general freak-out. We don't know the next shoe to drop on trade," said Michael Block, chief strategist at Rhino Trading Partners.Investors were further rattled when China's ambassador to the United States signaled that China could ease purchases of US bonds in response to Trump's tariffs. "We are looking at all options," Ambassador Cui Tiankai told Bloomberg News.China is America's biggest creditor, with more than trillion of Treasury bonds."We've been told for our entire careers that trade wars made the Great Depression worse. And we believe it," said Bruce McCain, chief investment strategist at Key Private Bank.Related: Trade fears add to concern of a downturnAsian markets were rocked overnight after China vowed not to back down in a potential trade war with the United States. Japan's Nikkei 225 plummeted 4.5%, and the Hang Seng in Hong Kong lost 2.5%.On Thursday, the market sold off after Trump announced plans to impose tariffs on about billion of Chinese imports to retaliate for theft of intellectual property.China said hours later that it "is not afraid of and will not recoil from a trade war." Officials in China detailed a plan to retaliate to Trump's aluminum and steel tariffs by imposing their own tariffs on about billion worth of imports of US goods.Trump, who often uses the stock market as a barometer for his success, shrugged off the market turmoil."I think the stock market is going to be great," he said Friday at the White House after a reporter asked about the sell-off. "The stock market is way up. When I came into office, the stock market was from a different planet."Despite the recent struggles, the Dow remains up about 30% since Trump's election.Related: China: We would fight a trade war 'to the end'The worry is that a tit-for-tat escalation between the two largest economies in the world will ruin the solid economic backdrop. Investors had been banking on strong growth this year, but a slowdown in trade and dented business and consumer confidence could change that outlook drastically.Barclays warned in a report that a trade war would drown out the benefits of Trump's tax cuts, which helped power Wall Street's euphoric rally."The administration is moving forcefully into the anti-trade portion of its policy agenda," Barclays economist Michael Gapen wrote in a report on Friday.But it's too early to assess the impact. Bullish investors hope that the administration will soften its tough stance with China, similar to how tariffs on steel and aluminum imports were later scaled back significantly."The threat of a misstep remains high," Raymond James Washington policy analyst Ed Mills wrote in a report, but there is an expectation that "these actions will be watered down or mitigated" in the coming weeks.Key Bank's McCain thinks it's more likely the market is going through a correction than entering a bear market. He pointed to robust corporate profits and the strong economy, which enjoyed robust job growth in February."If anything, a few weeks ago we worried about the economy overheating and inflation picking up," McCain said.The-CNN-Wire 3867

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