山西肛门上长了个肉芽(太原痔疮疼的厉害怎么办) (今日更新中)

It's amazing how quickly technology can change. What seemed impossible just a few years ago is now reality. Robots are about to reach the next level, flexing their muscles like never before.It may not seem like much in this basement lab, but with a jolt of electricity, a team is creating the muscle of the future. "It's actually one of the closest analogs to natural muscle," says University of Colorado Boulder PhD student Shane Mitchell. "It almost performs like natural muscle."It's delicate enough to pick up a raspberry without bursting it, and an egg without breaking it. Yet strong enough to lift a gallon of water."We were inspired to create this artificial muscle from the world we live in," says Tim Morrissey, who manages the team at the Keplinger Research Group lab. The team develop HASEL, an artificial soft muscle that could enhance robot technology, making them better able to help people who need it."The robot needs to come into your home and work around you," Morrisey says. "And so if the robot is going to go up stairs it's going to need muscles to do that."HASEL muscle technology could also lead to advanced prosthetics.Morrisey says, "If you make a robot that has you know a skeleton frame with a soft bicep on it that moves up and down, you can do the same thing with a prosthetic."While other artificial muscles can be bulky, or unable to withstand electric pulses,  if there's an electric surge, HASEL can even repair itself. And with a rubber shell, electrodes and liquid inside, can you believe it costs only about 10 cents to make. "Originally we used canola oil actually just from the local grocery store," Mitchell says. It's an exciting innovation, but to this team, it's much more."We want to do something new in the scientific community," Mitchell says. "But it's really no help if it just stays in the lab. So we want to bring our technology to the community." Creating the next generation of robot technology, by adding a more natural touch. 2017

It’s taco time. Mookie Betts with the Los Angeles Dodgers helped his team beat the Tampa Bay Rays, and he also helped fans get a free taco.“TACOS ON ME!!!!” the right fielder tweeted out Wednesday morning. 213

It happens every year around this time.The weather gets colder and cold and flu viruses start making the rounds. But this year, there's a third illness expected to enter the mix: COVID-19.New cases are coming in at a record pace. Hospitalizations and deaths are rising, too.Now, public health experts say the pandemic is in a "critical phase,” warning winter could be the worst season yet for the novel coronavirus.Cold weather is one of the main reasons that doctors expect cases to rise sharply over the next couple of months. Researchers say the virus survives best in cold, dry conditions without direct sunlight. The same conditions that fuel cold and flu seasons.The cold weather also pushes more people to spend time indoors, where the virus can spread more easily, especially if air ventilation is poor.“Pandemic fatigue" is another reason COVID-19 cases could surge this winter. The surgeon general says people aren't taking precautions as seriously as they were before and that it's already causing an increase.That fatigue is expected to get worse this holiday season. Many people got together for Thanksgiving, and Hanukkah, Christmas and Kwanzaa are right around the corner.Experts say while some people are simply tired of social distancing and being isolated, others plan to make an exception for just one day with family.Aside from warm weather, experts think this spring will bring a brighter outlook for ending the pandemic, with new therapeutics and vaccines to help bring cases under control. 1520

Investors were in a rotten mood Tuesday.Seemingly good results from Dow components Caterpillar, Coca-Cola and United Technologies didn't please Wall Street. The Dow closed down 425 points, or 1.7%, after opening with a 130-point gain. At its worst point of the day, the Dow was down more than 600 points.The Dow has fallen for the past five straight days — its longest losing streak in more than a year — and has given up its gains for the year.Why the nearly 650-point swing in the Dow in a matter of hours? Once investors took a closer look at the results, they focused on the negatives.Caterpillar, for example, warned that profit margins would probably not get any higher this year than they are now.And Coke investors were disappointed that lower prices may have helped drive sales -- even though Diet Coke finally returned to growth. Shares of Caterpillar plunged 6% while Coke's stock lost 2%.Verizon was one of the few companies that posted strong results Tuesday that didn't seem to have any caveats -- and it was rewarded for it. Shares of Verizon rose 2%.But other earnings reports were downright gloomy. 3M, another Dow component, lowered its outlook for the year. That sent its stock plunging 7%. Insurance company Travelers, also in the Dow, fell 3% after its earnings missed forecasts.All this negativity dragged down other old-school, classic industrial Dow companies too. Boeing and DowDuPont both fell about 3%.And tech investors were disappointed by increased expenses at Google parent Alphabet.Related: Why everyone is stressing about the 10-year Treasury Even though Alphabet posted solid gains in earnings and revenue that easily topped Wall Street's estimates, the stock fell 5% — and that helped drag down the S&P 500, Nasdaq and tech titans Apple, Amazon, Microsoft and Facebook.It didn't help that the yield on the 10-year US Treasury note rose above 3% for the first time in more than four years Tuesday morning.If this benchmark bond rate keeps climbing, it may make it more expensive to borrow money for mortgages and auto loans and could eat into profits at big US companies — especially since the Federal Reserve is expected to keep raising short-term rates.Still, one expert said investors may be overreacting to the moves in the bond market."I don't know that there is any magic to the 3.0% level other than it is a nice round number," said Jeff Mills, co-chief investment strategist for PNC Financial Services Group. "There is no rule that says rising rates are bad for the stock market."Mills added that since 1928, stocks have actually done a little bit better when rates have gone up. The market has gained about 11% on average during years that rates have gone up and 9% in years of falling rates.But jittery investors don't seem to care about historical market facts right now. They are selling first and asking questions later.The-CNN-Wire 2887

It was supposed to be a make-or-break moment.When the Trump administration said last September it was pulling the plug on Deferred Action for Childhood Arrivals, March 5 was the program's official end date.But it was so much more than a date on the calendar. It was the looming deadline that finally was going to force Congress to tackle the perennial political hot potato of immigration.Protesters organized around it. Lawmakers invoked it in fiery speeches. The President warned that time was running out to make a deal.Now, here we are, just days from that fateful date and no solution in sight. And what about Monday's deadline? Well, it still exists on paper. But it's become more of a symbolic marker than a moment when anything major is expected to happen for the roughly 700,000 DACA recipients.Here's a look at how we got here, and what happens next: How did this happen? 893

来源：资阳报