中山肠镜检查前注意事项(中山肛门上长了个肉疙瘩怎么办) (今日更新中)

Three people are dead and four are missing after a plane crash in a remote northern Labrador lake in Canada.Jean Tremblay, chief executive of the regional airline Air Saguenay, told CBC News that a de Havilland DHC-2 Beaver float plane went down in Mistastin Lake.On board was a pilot for the airline, four passengers and two fishing guides.The plane was heading from a fishing lodge to a remote camp on the lake when it was reported overdue Monday night, according to CBC.The pilot and two others were found dead at the wreckage site, Tremblay told the outlet.The fate of the other four people on the plane is unclear. 631

This year began with a partial solar eclipse. A little more than halfway through 2019, much of the world will see a partial lunar eclipse Tuesday night or Wednesday morning, depending on where you live.The partial lunar eclipse will be visible in Africa, most of Europe, a large portion of Asia, the eastern part of South American and the western part of Australia, reported the Europe-based 404

The results are finally in for the first chocolate chip cookie bake-off in space.While looking more or less normal, the best cookies required two hours of baking time last month up at the International Space Station. It takes far less time on Earth, under 20 minutes.And how do they taste? No one knows. Still sealed in individual baking pouches and packed in their spaceflight container, the cookies remain frozen in a Houston-area lab after splashing down two weeks ago in a SpaceX capsule. They were the first food baked in space from raw ingredients.The makers of the oven expected a difference in baking time in space, but not that big.“There’s still a lot to look into to figure out really what’s driving that difference, but definitely a cool result,” Mary Murphy, a manager for Texas-based Nanoracks, said this week. “Overall, I think it’s a pretty awesome first experiment.”Located near NASA’s Johnson Space Center, Nanoracks designed and built the small electric test oven that was launched to the space station last November. Five frozen raw cookies were already up there.Italian astronaut Luca Parmitano was the master baker in December, radioing down a description as he baked them one by one in the prototype Zero G Oven. The first cookie — in the oven for 25 minutes at 300 degrees Fahrenheit (149 degrees Celsius) — ended up seriously under-baked. He more than doubled the baking time for the next two, and the results were still so-so.The fourth cookie stayed in the oven for two hours, and finally success. “So this time, I do see some browning,” Parmitano radioed. “I can’t tell you whether it’s cooked all the way or not, but it certainly doesn’t look like cookie dough any more.”Parmitano cranked the oven up to its maximum 325 degrees F (163 degrees C) for the fifth cookie and baked it for 130 minutes. He reported more success.Additional testing is required to determine whether the three returned cookies are safe to eat.As for aroma, the astronauts could smell the cookies when they removed them from the oven, except for the first.That’s the beauty of baking in space, according to former NASA astronaut Mike Massimino. He now teaches at Columbia University and is a paid spokesman for DoubleTree by Hilton. The hotel chain provided the cookie dough, the same kind used for cookies offered to hotel guests. It’s offering one of the space-baked cookies to the Smithsonian Institution’s National Air and Space Museum for display.“The reminder of home, the connection with home, I think, can’t be overstated,” Massimino said. “From my personal experience ... food is pretty important for not just nutrition but also for morale in keeping people connected to their home and their Earth.”Eating something other than dehydrated or prepackaged food will be particularly important as astronauts head back to the moon and on to Mars.Nanoracks and Zero G Kitchen, a New York City startup that collaborated with the experiment, are considering more experiments for the orbiting oven and possibly more space appliances. What’s in orbit now are essentially food warmers.There’s an added bonus of having freshly baked cookies in space.“We made space cookies and milk for Santa this year,” NASA astronaut Christina Koch tweeted.___The Associated Press Health and Science Department receives 3315

The pictures are horrific, and the stories behind the devastating crashes are heartbreaking.In one accident, 17-year-old Annaleah and 13-year-old Mary died in the backseat of their car, after a truck hit them and pushed the car underneath a tractor-trailer. Their mother, Marianne Karth, is haunted by it. “It's a very devastating crash. It's like the most devasting you can have,” Karth says. Lois Durso also lost her 26-old-daughter, Roya, in one of these same types of crashes.“Her hair was on the tires of the trailer, so we know it crushed her,” Durso recalls. Eric Hein experienced a similar tragedy. His 16-year-old son, Riley, died on his way to marching band practice after getting trapped underneath a tractor-trailer truck.“He went underneath the trailer,” Hein recalls. “His car got dragged for half a mile until it was engulfed in flames, and the fire killed him.” Tragedy brought all three parents together. Now, perseverance pushes them forward as they take steps to prevent these types of crashes. Karth and Durso organized a crash test in Washington, D.C. just weeks after members of Congress reintroduced the Stop Underrides Act, which would update and strengthen safety laws, including requiring tractor trailers to have guards on the sides to help prevent cars from ending up underneath them.“Seeing is believing, and for them to witness with their own eyes and own ears and to have it be something they see,” Karth says of their crash test. “Crash into the side of the trailer with a side guard and without to see the life and death difference.” Past legislation has stalled, but the parents hope this dramatic demonstration will be enough to get Congress to take action. Tests have shown when installed properly, guards can make a difference and keep cars from sliding underneath trailers. “It's not the crash that kills, it's the underride,” explains Durso. “If you can prevent the underride, there's a chance the vehicle occupants will survive.” Groups representing the trucking industry have concerns about the cost and say the guards add extra weight and can impact how tractor trailers can maneuver. However, parents say those concerns will not slow down their effort and they remain driven to save lives. “I lost my son. I don't want somebody else to go through this tragedy. These are preventable deaths,” says Hein. 2357

The remains of an ancient ape found in a Bavarian clay pit suggest that humans’ ancestors began standing upright millions of years earlier than previously thought, scientists said Wednesday.An international team of researchers says the fossilized partial skeleton of a male ape that lived almost 12 million years ago in the humid forests of what is now southern Germany bears a striking resemblance to modern human bones. In a paper published by the journal Nature, they concluded that the previously unknown species — named Danuvius guggenmosi — could walk on two legs but also climb like an ape.The findings “raise fundamental questions about our previous understanding of the evolution of the great apes and humans,” said Madelaine Boehme of the University of Tuebingen, Germany, who led the research.The question of when apes evolved bipedal motion has fascinated scientists since Charles Darwin first argued that they were the ancestors of humans. Previous fossil records of apes with an upright gait — found in Crete and Kenya — dated only as far back as 6 million years ago.Boehme, along with researchers from Bulgaria, Germany, Canada and the United States, examined more than 15,000 bones recovered from a trove of archaeological remains known as the Hammerschmiede, or Hammer Smithy, about 70 kilometers (44 miles) west of the Germany city of Munich.Among the remains they were able to piece together were primate fossils belonging to four individuals that lived 11.62 million years ago. The most complete, an adult male, likely stood about 1 meter (3 feet, 4 inches) tall, weighed 31 kilograms (68 pounds) and looked similar to modern-day bonobos, a species of chimpanzee.“It was astonishing for us to realize how similar certain bones are to humans, as opposed to great apes,” Boehme said.Thanks to several well-preserved vertebra, limb, finger and toe bones, the scientists were able to reconstruct how Danuvius moved, concluding that while it would have been able to hang from branches by his arms, it could also straighten its legs to walk upright.“This changes our view of early human evolution, which is that it all happened in Africa,” Boehme told The Associated Press in an interview.Like humans, Danuvius had an S-shaped spine to hold its body upright while standing. Unlike humans, though, it had a powerful, opposable big toe that would have allowed it to grab branches with its foot and safely walk through the treetops.Fred Spoor, a paleontologist at the Natural History Museum in London, called the fossil finds “fantastic” but said they would likely be the subject of much debate, not least because they could challenge many existing ideas about evolution.“I can see that there will be a lot of agonizing and re-analysis of what these fossils mean,” said Spoor, who wasn’t involved in the study. 2833

来源：资阳报