济南高级全自动半身心肺复苏模拟人(江西人体针灸模型 85CM (带肌肉解剖）) (今日更新中)

STUART, Fla. — A child on vacation in South Florida is recovering after he was bitten by a shark on Wednesday.The family of 11-year-old Cael Dewey of Iowa said they were at Stuart Beach around 2:15 p.m. when Cael was bit on the foot by what could be a spinner shark.He was not seriously hurt.Scientists said this is the time of year when 350

SpaceX completed the last big test of its crew capsule before launching astronauts in the next few months, mimicking an emergency escape shortly after liftoff Sunday.No one was aboard for the wild ride in the skies above Cape Canaveral, just two mannequins. The nine-minute flight ended with the Dragon crew capsule parachuting safely into the Atlantic, after separating and speeding away from the exploding rocket.“I’m super fired up,” Elon Musk, the company’s founder and chief executive, told reporters. “It’s just going to be wonderful to get astronauts back into orbit from American soil after almost a decade of not being able to do so. That’s just super exciting.”NASA astronauts have not launched from the U.S. since the space shuttle program ended in 2011. Musk and NASA Administrator Jim Bridenstine said the next Crew Dragon could launch with a pair of NASA astronauts in the second quarter of this year — as early as April.The Falcon 9 rocket blasted off as normal, but just over a minute into its supersonic flight, the Dragon crew capsule catapulted off the top 12 miles (20 kilometers) above the Atlantic. Powerful thrusters on the capsule propelled it up and out of harm’s way, as the rocket engines deliberately shut down and the booster tumbled out of control and exploded in a giant fireball. The capsule reached an altitude of about 27 miles (44 kilometers) before parachuting into the ocean just offshore to bring the test flight to a close. Everything appeared to go well despite the choppy seas and overcast skies. Within minutes, a recovery ship was alongside the capsule.Recycled from three previous launches, the SpaceX rocket was destroyed as it burst apart in flight and slammed in pieces into the sea. SpaceX normally tries to recover its boosters to drive down launch costs, landing them upright on a floating platform or back at the launch site.NASA’s commercial crew program manager, Kathy Lueders, said the launch abort test was “our last open milestone” before allowing SpaceX to launch Doug Hurley and Robert Behnken to the International Space Station. Their launch date will depend, in part, on whether NASA decides to keep them for months at the orbiting lab, versus just a week or two. A longer mission will require more training before flight.The astronauts monitored Sunday’s flight from the firing room. Hurley said it was “pretty neat to see” the capsule aboard the recovery ship within two hours. By all early accounts, the test was successful.“We’ll see what the data show and go from there,” Hurley said. “But it certainly is a confidence builder from the standpoint if you ever got into that situation, that Dragon can get us away from the booster quickly.”The astronauts also will have access to speed before liftoff. During a launch dress rehearsal Friday, Hurley and Behnken rode in a white Tesla Model X from Kennedy Space Center’s crew quarters to the launch pad, their sleek white and black spacesuits matching the electric sports car with wing-like doors. Musk, who also runs Tesla, used the cars to get around the space center Sunday.Delayed a day by bad weather, Sunday’s launch from Kennedy brought together hundreds of SpaceX, NASA and Air Force employees on land, at sea and in the air. Tourists and locals alike packed the adjoining visitor complex and nearby beaches to see the dramatic fiery spectacle of an out-of-control rocket. Musk brought along his own family, including his brother.NASA hired SpaceX and Boeing a decade ago to transport astronauts to and from the space station for billions of dollars. Both companies struggled with technical problems, adding years of delay and forcing NASA to shell out hundreds of millions of dollars extra for Russian rocket rides.After multiple cargo deliveries for NASA, SpaceX successfully flew an enhanced crew capsule to the space station last March without anyone on board, but it exploded a month later during ground testing. The emergency escape thrusters — the kind used in Sunday’s test — had to be retooled. In all, SpaceX has tested these powerful Super Draco thrusters some 700 times.Last month, meanwhile, Boeing’s Starliner crew capsule ended up in the wrong orbit on its first test flight and had to skip the space station. The previous month, only two of the Starliner’s three parachutes deployed during a launch abort test.Lueders said it’s too soon to know whether Boeing will need to send another Starliner to the space station without a crew or go straight to launching astronauts later this year. An investigation team is still looking into why the Starliner’s automated timer was off by 11 hours during the December test flight.The importance of launch escape was demonstrated in 2017 when two astronauts, an American and a Russian, were pulled to safety during a failed launch from Kazakhstan. They experienced up to seven times the force of gravity during the abort, but walked away from the accident.The SpaceX in-flight abort system, Musk pointed out, should be gentler for the crew and is good from the launch pad all the way to orbit.Musk said the Dragon’s escape system should work — in principle — even if the capsule is still attached when the rocket erupts in a fireball. He said that could look like “something out of ‘Star Wars’” with the capsule flying right out of a fireball.“Obviously we want to avoid doing that,” he quickly added, taking note of all the NASA personnel around him.___The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute’s Department of Science Education. The AP is solely responsible for all content. 5629

Saturday's shooting in El Paso is at least the third atrocity this year where a suspect is believed to have posted to 8chan in advance of an attack.8chan is an online messaging board that has been used by anonymous accounts to share extremist messages and cheer on mass shooters. It is rife with racist and anti-Semitic conspiracy theories.Law enforcement officials in El Paso, Texas, confirmed on Saturday they were investigating a document posted on 8chan that they believe was written by Patrick Crusius, the shooting suspect.In the four-page document on 8chan, the author wrote: "I'm probably going to die today." A CNN analysis found it was posted less than 20 minutes before police received the first calls about the El Paso shooting.The document is filled with white nationalist and racist hatred toward immigrants and Hispanics, blaming immigrants and first-generation Americans for taking away jobs and the blending of cultures in the US.Before the mass shooting in Christchurch, New Zealand, in March, an account believed to belong to the gunman posted a link to an 87-page white nationalist manifesto on Twitter and 8chan. The unsigned manifesto, which is more than 16,000 words, was filled with anti-immigrant and anti-Muslim sentiments, as well as explanations for an attack.The writer of the document linked to the El Paso suspect expressed support for the shootings of two mosques in Christchurch.Seventy-three minutes before the deadly shooting at Congregation Chabad synagogue in Poway, California, in April, someone identifying himself as the suspect in that attack posted a link to a hate-speech-filled manifesto hyperlinked on 8chan.Tipsters alerted the FBI about the 8chan post approximately five minutes before the gunman, John T. Earnest, allegedly began shooting, an FBI official confirmed to CNN.The manifesto talks about killing Jewish people without making reference to Poway or Congregation Chabad.Just like the El Paso-linked post, the person identifying himself as John Earnest said he was inspired by the Christchurch attacks.8chan was founded by software developer Fredrick Brennan as an even more unconstrained alternative to online forum 4chan, which he believed was too tightly moderated.4chan's "politically incorrect" board -- abbreviated as /pol/ -- is an infamous place where hoaxes and conspiracy theorists flourish after mass shootings, as a CNN investigation has shown.In 2015, Brennan handed over control of 8chan to Jim Watkins, an online entrepreneur, but stayed as administrator until 2016, 2549

Sprouts Farmers Market is recalling its Frozen Cut Leaf Spinach due to listeria concerns. The recall affects both the regular and organic 16-ounce bags.According to the 181

Robert Pattinson is the latest actor to sign on as Batman.The 33-year-old "Twilight" star will be the superhero in "The Batman," which will hit theaters in June 2021, 179

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