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郑州激光可以近视眼
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发布时间: 2025-05-30 22:38:41北京青年报社官方账号
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  郑州激光可以近视眼   

We know virtual learning is mentally hard on kids, but what about physically? If your child is having persistent neck or back pain, it might be related to poor posture and poor body positioning.At some point during the pandemic, most children across the country were doing some sort of computer-assisted learning. At Children's Hospital of Orange County in Southern California, pediatric physical therapist Ruchi Bagrodia covers posture and seating with kids who are of age.There are many things they should be doing.“I always encourage them, a child, to sit at a dining or office table, a chair with a seat back. Their back should be supported,” Bagrodia said.There are lots of things they shouldn't do.“Never sitting on the floor, never sitting in bed, never sitting on the couch,” Bagrodia said. “For therapy appointments or learning, it promotes poor posture if you’re in a squishy bean bag chair or couch. You’re never going to sit up well if you’re there for a couple hours. You’ll develop all sorts of kinks and achiness in the neck, the shoulder, the back.”Many Americans are at home, and these days, many are in chairs a lot. If you're using a device, it matters where you put it. “The level of the tablet, the height of it matters,” said Bagrodia. “We want it arm’s-lengths away and the top of the screen should be just below your eye level. If you’re on the floor and your tablet is on your lap, you’re going to be looking down at your lap and that can develop shoulder neck pain, achiness.”When asked about the long-term implications of persistent bad posture, Bagrodia said, “Poor posture is something is that is developed in a 6- or 7-year-old by the time they’re 20, maybe they do have serious back pain or issues.”While you're repositioning your children, doctors say, pay attention to their mental health too.“Across all different mental health issues, we’re seeing a marked increase, everything in kids. We’re not just talking one age range, we’re talking young childhood all the way through late teenagers,” says Dr. Christopher Min, a pediatric psychologist.Dr. Min says kids need the structure, stability and routine that school provides, and that is what's missing for a lot of kids.“Kids' bodies and brains do really well, “ Dr. Min said. “We’re creatures of habit, when they have that regularity, it’s really great for their brains.”Dr. Min says try to provide some sort of routine and make sure you incorporate enough physical activity, such as a daily family walk. And he says there are signs when things are not going well for children.“For kids, a sign of some mental health difficulties is irritability (which) is a symptom of anxiety and depression in kids,” Dr. Min said.He recommends to pay attention to sleeping and eating habits. While you can't do everything, you can definitely make sure children are consistently physically comfortable while learning at home. That doesn't mean you need a fancy or expensive desk.“If the chair is too high and their feet is hanging off, then put a box or laundry basket underneath their feet so they’re supported. If the laptop is really low, then put books or something under the laptop to lift it up, put a cushion if the chair is too big, put a pillow, or roll up a sweatshirt and tuck it under the low back for some support,” says Bagrodia.At the same time, if you are sitting for long periods of time, check your positioning as well, since it appears the work from home life won't be sitting anytime soon. 3488

  郑州激光可以近视眼   

WASHINGTON, D.C. – The coronavirus grip on the summer of 2020 is shaping up to mean different things to different people.“The picture does look different depending on where you are looking in the country,” said Dr. Caitlin Rivers, an epidemiologist with the Johns Hopkins Center for Health Security.Only two states – Connecticut and Rhode Island – recorded a drop in coronavirus cases last week. In a dozen other states, mainly in the northern Plains states and the Northeast, cases are steady, including in hard-hit New York and New Jersey, which got their number of COVID-19 cases under control.However, in the other 36 states, the number of coronavirus cases is on the rise, including record-breaking numbers in Florida, Texas, Arizona and NevadaYet, Dr. Rivers says don’t call it a "second wave."“Most communities never left the first wave and so it's difficult to call it a second wave,” she said.But could a second wave of state lockdowns be on the horizon? Dr. Rivers said that can be hard to know, but that would come down to a number of factors – the main one being hospital capacity.“It's nobody's preference to reinstitute the lockdowns. They're enormously disruptive - they're costly to say the least. It's a very difficult set of circumstances,” Dr. Rivers said. “So, that's really for the worst-case crisis situation. But we can't rule it out because we also cannot allow our health care systems to become overwhelmed.”That means, there is a need to keep hospitals from reaching 90% capacity. Already, some states have paused their reopenings. In Texas, Florida and Arizona, bars were ordered to shut down again because people were congregating without masks or social distancing.Some medical experts warn that more measures may be needed."If we don't do something - and I mean really strong, on containment, surveillance, contact tracing, isolation - we're in for a very, very rough time," said epidemiologist Dr. Larry Brilliant.In the meantime, much of the protection against the virus may be left in the hands of each individual.“All of us, including those of us who live in states that are not experiencing a lot of transmission, should be spending a little bit more time at home skipping mass gatherings for example, wearing fabric face masks going out into the community and doing a really great job at hand hygiene,” Dr. Rivers said.In other words, people should not let their guard down, while the virus remains out and about. 2457

  郑州激光可以近视眼   

Wendy's wants you to have a free chicken sandwich.The fast-food chain announced that customers who purchase anything off its mobile app or drive-thru would receive a free Classic Chicken Sandwich.You can also redeem the free sandwich inside the restaurant by showing them the QR code from your mobile app when you place your order."We can't wait for our fans to get their hands on the New Classic Chicken Sandwich which has the perfect crunch from breading and pickles paired with the juiciness and flavor of the fillet," said Carl Loredo, Chief Marketing Officer for The Wendy's Company in a press release. "The Classic joins what customers have already come to know and love in spice and taste from Wendy's via our Spicy Chicken and Pretzel Bacon Pub Chicken Sandwiches."Now through Nov. 8, customers can receive one free sandwich per week, which means you can get two free sandwiches before the deal expires, USA Today reported.The sandwich usually sells for .99. 976

  

We're about a month from thanksgiving and Dr. Anthony Fauci is warning that we may need to change our plans with COVID-19 cases increasing.His three adult daughters aren't coming home because they're worried about exposing their dad, who's 79 years old.Dr. Syra Madad has been a leader in the response to the coronavirus in New York. She says nationwide we are in the third peak of the virus but still in the first wave. It's the first wave, because cases never went down enough to reach the baseline.“I think everybody, including myself, we are all tired of COVID-19,” said Madad. “We're all tired of constantly socially distancing, wearing a mask, but this is our new normal. This is our reality, and this is what we have to do to not only protect ourselves, but our family, our loved ones and our community.”She says it is possible to see family or friends safely for the holidays, but you have to plan ahead. First, she recommends quarantining for 14 days before you see them.“Testing does not give you a free pass in terms of, OK I’ve tested negative, that means I don't have to quarantine for 14 days. That means I can safely merge my social bubble. That is absolutely not the case,” said Madad.She also says you need to consider if anyone you are visiting is high risk and do your homework about the area you are traveling to. How many cases have there been in a week to two-week period? Also, look at hospital capacity.And you should consider additional precautions once you arrive.“Even if you've merged your social bubble and you've done that 14-day quarantine period, it's just always best to try to limit the risk in terms of contracting and spreading COVID-19, just in case and so things to do on top of that is try to have these activities outdoor as much as possible,” said Madad.The national Home Safe for the Holidays initiative recently launched by the U.S. Public Interest Research Group is calling for more testing.It says governors need to ensure test results are coming back in 48 hours or less to prevent small incidents from becoming outbreaks.Madad says looking at how much testing is being done in the area you're considering traveling to is important in making your decision. 2210

  

WASHINGTON, D.C. -- IBM says it is getting out of the facial recognition business over concern about how it can be used for mass surveillance and racial profiling.A letter to U.S. lawmakers Monday from new IBM CEO Arvind Krishna said the tech giant “has sunset its general purpose facial recognition and analysis software products.”Krishna’s letter called for police reforms and said “IBM firmly opposes and will not condone uses of any technology, including facial recognition technology offered by other vendors, for mass surveillance, racial profiling” and human rights violations.Krishna was addressing Democrats who recently introduced police reform legislation in Congress in response to the death of George Floyd and others in law enforcement interactions that have sparked a worldwide reckoning over racial injustice.IBM had previously tested its facial recognition software in New York City.In the letter, Krishna also called for a “national dialogue” on whether and how facial recognition should be employed by domestic law enforcement agencies.“Artificial Intelligence is a powerful tool that can help law enforcement keep citizens safe,” wrote Krishna. “But vendors and users of Al systems have a shared responsibility to ensure that Al is tested for bias, particularity when used in law enforcement, and that such bias testing is audited and reported.” 1373

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