沈阳治疗过敏性紫癜要多少钱(沈阳脱发的价格是多少) (今日更新中)

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

Think about this: working 80 percent of the hours for 100 percent of the pay.It's a concept a Denver company wondered if it’d work for them. This summer, Uncharted decided to put it to the test.CEO Banks Benitez says he started looking into it in 2019. He brought it to his executive board, and they decided it was something they were going to implement in 2020. Then, COVID-19 happened."So, we asked this question, 'Do we need to be working like crazy hours right now or do we need to really think about how we care for the mental health of our team and give people some space?'" said Benitez.This summer, they launched an experiment, hiring a third-party company to evaluate the efficacy of the experiment. The team worked Monday through Thursday, taking every Friday off. The hours were not made up throughout the week. The team worked four 8-hour workdays.They looked at three main things: performance, culture, and mental health."Performance stayed the same and was constant over the course of the experiment compared to previous performance," said Benitez.Culture, he says, slightly improved at the Denver-based company. People felt just as or a little more connected to members on their team.Lastly, to no surprise, mental health improved."I know that our best work comes when our team is healthy when our team is mentally healthy, when our team is aligned and in touch with each other," said Benitez.Benitez says there’s a different mentality that his employees bring in when they have a four-day workweek. They’re more focused and clearer about priorities. However, there are some downfalls"There’s a little bit less buffer time to kind of just go with the wind. You have to be really thoughtful about how you structure your time. And of course, the benefit of that is, Fridays are off," said Benitez.That helps lead to more downtime and time to refresh before starting the work grind again Monday morning."How do we situate Uncharted within the broader life that they’re living, [whether] that’s family, kids, adventures, travel, all that stuff. And if we can do that, I think the team will come back and perform better," said Benitez. 2153

T-Mobile and Sprint finally agreed to a massive telecom merger after years of negotiations punctuated by two breakups.The  billion merger, announced Sunday, values Sprint near its current share price of .50.The tie-up would position the telecom companies as fiercer competitors to Verizon and AT&T, which have long dominated the US market."I'm excited to announce that @TMobile & @Sprint have reached an agreement to come together to form a new company -- a larger, stronger competitor that will be a force for positive change for all US consumers and businesses! Watch this & click through for details." said T-Mobile CEO John Legere, in a tweet Sunday.A report that the deal was getting close drove up Sprint's stock price by 8% on Friday and T-Mobile's price edged up as well. The stock price for SoftBank, a Japanese conglomerate with a majority stake in Sprint, rose by 3%.Sprint and T-Mobile first discussed a merger in 2014 but scrapped it because of concerns about regulatory challenges from the Obama administration.The companies expected to have a better shot at the merger under the Trump administration.Sprint stock tanks as T-Mobile merger said to collapseSoftBank CEO Masayoshi Son met with Trump the month before he took office to talk up an investment in US businesses.A few weeks later, T-Mobile's Legere said he was open to "various forms of consolidation" when asked about a potential merger with Sprint and SoftBank under the Trump administration.But last November, after much speculation, the two companies issued a statement saying they "have ceased talks.""While we couldn't reach an agreement to combine our companies, we certainly recognize the benefits of scale through a potential combination. However, we have agreed that it is best to move forward on our own," Marcelo Claure, the Sprint CEO, said at the time.Sprint and T-Mobile's announcement is just the latest step in an ongoing movement towards telecom consolidation. AT&T is in talks to acquire Time Warner, which owns CNN and CNNMoney. The outcome of that billion merger-in-the-making depends on a case in federal court, which is pending the decision of the judge. 2203

TORONTO, Canada (KGTV) -- Canadian law enforcement officials have released disturbing surveillance footage showing a masked suspect posing as a delivery man firing a crossbow into a woman.The video, which was captured Nov. 7, 2018 but released this week, shows the suspect approaching the 44-year-old victim's porch holding a large cardboard box. The suspect rings the doorbell, exchanges words with the victim, then fires an arrow into her chest, leaving her with life-threatening injuries. The suspect then fled the scene in a dark-colored vehicle parked nearby, police said."After a brief conversation, the suspect shot the victim with an arrow using a crossbow that was concealed inside of the box," Peel Regional Police said.Investigators said the attack was premeditated, targeted, and isolated "based on the conversation that occurred between the victim and the suspect." No further details about the conversation were disclosed.Police said the suspect used an arrow "designed to hunt large game such as moose and deer and inflict the maximum amount of damage possible."Officers are seeking the public's help identifying the suspect in the attempted murder case. Anyone with any information in relation to this incident is asked to contact the 22 Division Criminal Investigation Bureau at (905) 453-2121, ext. 2233. Information may also be left anonymously by calling Peel Crime Stoppers at 1-800-222-TIPS (8477), or by visiting www.peelcrimestoppers.ca, or by sending a text message to CRIMES (274637) with the word “PEEL” and then your tip. 1557

This one is for you, my fans. It's to celebrate us, and to thank you for ?? years of pure love and support. I am so grateful to you ???? THE RARITIES album is out October 2 ?? Pre-order now: https://t.co/vZ4SBXQ8hg pic.twitter.com/4JRW51QxVq— Mariah Carey (@MariahCarey) August 19, 2020 294

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