梅州羊器官模型(宁夏胎儿头颅骨模型) (今日更新中)

The Federal Aviation Administration issued an emergency directive for inspections of certain Boeing 737 planes due to recent reports of engine shutdowns.The FAA issued an emergency airworthiness directive on Thursday for certain Boeing 737s that have been in storage for more than a week.According to the directive, a certain engine valve may be responsible for four recent reports of engine shutdowns. Agency officials suspect that the valve may become corroded during storage, causing it to remain stuck in the open position.The directive requires that any Boeing 737-300, -400, -500, -600, -700, -700C,-800, -900, and -900ER that have been in storage for a week or longer undergo an inspection before being put back into use. The directive also requires inspections for any of those Boeing models that have completed "less than 10 flight cycles" at the time of the directive after coming out of storage.The inspection order was released the same day that CNBC reported that Boeing told lenders to expect fewer deliveries of its 737 Max planes that initially expected. The 737 Max, a plane Boeing has been developing for years, was grounded in 2019 after a series of crashes. 1185

The first experimental COVID-19 vaccine in the U.S. is on track to begin a huge study next month to prove if it really can fend off the coronavirus, while hard-hit Brazil is testing a different shot from China.Where to do crucial, late-stage testing and how many volunteers are needed to roll up their sleeves are big worries for health officials as the virus spread starts tapering off in parts of the world.Moderna Inc. said Thursday the vaccine it is developing with the National Institutes of Health will be tested in 30,000 people in the U.S. Some will get the real shot and some a dummy shot, as scientists carefully compare which group winds up with the most infections.With far fewer COVID-19 cases in China, Sinovac Biotech turned to Brazil, the epicenter of Latin America’s outbreak, for at least part of its final testing. The government of S?o Paulo announced Thursday that Sinovac will ship enough of its experimental vaccine to test in 9,000 Brazilians starting next month.If it works, “with this vaccine we will be able to immunize millions of Brazilians,” said S?o Paulo′s Gov. Joao Doria.Worldwide, about a dozen COVID-19 potential vaccines are in early stages of testing. The NIH expects to help several additional shots move into those final, large-scale studies this summer, including one made by Oxford University that’s also being tested in a few thousand volunteers in Brazil.There’s no guarantee any of the experimental shots will pan out.But if all goes well, “there will be potential to get answers” on which vaccines work by the end of the year, Dr. John Mascola, who directs NIH’s vaccine research center, told a meeting of the National Academy of Medicine on Wednesday.Vaccines train the body to recognize a virus and fight back, and specialists say it’s vital to test shots made in different ways — to increase the odds that at least one kind will work.Sinovac’s vaccine is made by growing the coronavirus in a lab and then killing it. So-called “whole inactivated” vaccines are tried-and-true, used for decades to make shots against polio, flu and other diseases — giving the body a sneak peek at the germ itself — but growing the virus is difficult and requires lab precautions.The vaccine made by the NIH and Moderna contains no actual virus. Those shots contain the genetic code for the aptly named “spike” protein that coats the surface of the coronavirus. The body’s cells use that code to make some harmless spike protein that the immune system reacts to, ready if it later encounters the real thing. The so-called mRNA vaccine is easier to make, but it’s a new and unproven technology.Neither company has yet published results of how their shots fared in smaller, earlier-stage studies, designed to check for serious side effects and how well people’s immune systems respond to different doses.Even before proof that any potential vaccine will work, companies and governments are beginning to stockpile millions of doses so they can be ready to start vaccinating as soon as answers arrive.In the U.S., a program called “Operation Warp Speed” aims to have 300 million doses on hand by January. Under Brazil’s agreement with Sinovac, the Instituto Butantan will learn to produce the Chinese shot.___AP journalist Marcelo Silva de Sousa contributed to this report.___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. 3499

The digital news company Mic has laid off most of its staff, a spokesperson for the company confirmed.The layoffs were first reported Thursday by Recode. It is not yet clear exactly how many employees were affected. Mic declined to comment beyond confirming the Recode report.The company was founded in 2011, and for the past several years has branded itself as a news website geared toward millennials.Mic Publisher Cory Haik also resigned Thursday. In a note to staff that was obtained by CNN Business, Haik called journalism a "tough business.""Our business models are unsettled, and the macro forces at play are all going through their own states of unrest," she wrote. "If anyone tells you they have it figured out, a special plan to save us all, or that it's all due to a singular fault, know that is categorically false. Like the truth, it is indeed complicated."Mic was once a digital media darling, attracting around million in funding from investors. Its biggest backers included Lightspeed Venture Partners, Clark Jermoluk Founders Fund, WPP and WarnerMedia. (WarnerMedia owns CNN.)The company's staff swelled to more than 100 people by early 2016, according to The New York Times, which asked in an article published at the time: "What happens when millennials run the workplace?"But the climate is a tough one for digital media publishers right now. Ad revenue alone hasn't been enough to support these businesses, and Google and Facebook have substantial control over the ad market.Refinery29, HuffPost and Vocativ have all cut staff in the past year. So have CNN Digital, Vice and BuzzFeed.Mic laid off 25 employees in August 2017 as part of a pivot to video. Co-founder and CEO Chris Altchek told staff at the time that the shift was needed because "visual journalism already makes up 75% of the time that our audience spends" with the site.There were signs this year that the environment wasn't improving for Mic. Digiday reported in April that traffic to Mic's website had been plunging.The article also noted that Mic was very reliant on Facebook, citing statistics that showed views on the social media site fell to 11 million views in March compared to 192 million about a year earlier.Still, company executives pushed back on some reports that characterized the situation at Mic as particularly dire. When the Columbia Journalism Review reported in September that the company's board discussed a possible shutdown, Altchek called the report "categorically false."Emily Singer, a senior political reporter at Mic, tweeted Thursday that she was leaving the company."I'm so proud of what we've accomplished here," Singer wrote.Kerry Lauerman, Mic's executive news director, tweeted about the "gutting experience" Thursday."But only love for the extremely resilient and open-hearted team of Mic editors, producers, writers and shooters I had the great honor of working with," he added. "They performed brilliantly often under a cloud of uncertainty."Reached by phone, Lauerman declined to comment further, saying only that the team was packing up all of their things.Several other employees also tweeted news of their departures."I have so much to say, but most importantly the time I spent at @mic was the best of my career," wrote Managing Editor Colleen Curry. "I learned so, so much from brilliant people dedicated to keeping journalism alive."Mic is also in talks to sell at least part of the company to Bustle Digital Group, Recode reported Wednesday. A source with knowledge of the potential deal confirmed that report to CNN Business. 3572

The CEOs for auto giants Kia and Hyundai have refused to attend a congressional hearing to explain why hundreds of their vehicles have spontaneously burst into flames.Both carmakers and a spokesman for Democrats on the Senate Committee on Commerce, Science and Transportation have confirmed the companies’ refusal to send representatives to the hearing, which has been scheduled for next week.A Kia spokesman said the company is working with the committee to “analyze all relevant information associated with any fire or other safety-related matters and will take any necessary corrective action in a timely manner.”A Hyundai spokesman said, “Hyundai takes this matter very seriously, and fully appreciates the concerns of the Senate Commerce, Science & Transportation Committee including those of the Chairman and Ranking Member.”It was not immediately clear whether the U.S. Senate committee would postpone or cancel its Nov. 14 hearing on Kia and Hyundai fires.The call for the hearing came six months after Consumer Investigator Jackie Callaway, of WFTS television station in Tampa, Florida, first reported on the unexplained car fires.Since April, the WFTS I-team has exposed hundreds of Kia and Hyundai models manufactured since 2011 that caught fire across the country.“The hearing will focus on motor vehicle safety issues involving vehicle fires,” stated the identical letters – dated Oct. 16 – and sent to Kia Motors America President and CEO Seungkyu “Sean” Yoon and Hyundai Motor America's Kyung Soo “Kenny” Lee.The CEOs were asked to “promptly identify and respond to defects that may pose a fire risk” at the Nov. 14 hearing in front of the Senate Committee on Commerce, Science and Transportation.In September, an Ohio mother spoke out and called for a federal investigation after watching her son burn alive in her 2014 Kia Soul parked at her apartment complex just outside of Cincinnati last year. 1926

The coronavirus has ruined a lot of things, but Children's Hospital of Orange County, California, made sure that the virus didn't cancel prom.Choc Ball 2020 had everything, even a disco ball.“I will never forget asking our maintenance crew to help me hang some disco balls from our valet which has never happened before.” Kara Noskoff, a program coordinator for the Child Life department at Children's Hospital of Orange County, said.It's her job to normalize the hospital environment for kids of all ages. She helps throw the oncology ball, which is held every year, to recreate what teems might miss out on at school."It’s not like going to their school dance,” Noskoff said. “They’re in a room full of 200 plus people dancing and taking pictures and dressed up with the health care professionals that took care of them as well as their peers that all have the same scars.”Except it's 2020. And it almost didn't happen due to too many high-risk patients and too many high-risk exposures. But the staff at Children's Hospital decided happiness is important too.“Their mental health and growth and development is so important as well. I’m so proud of… our staff to see that bigger picture and push the boundaries a little bit and find a way to keep them safe but give them these things to look forward to,” Noskoff said.They turned what was supposed to be a huge party into a socially distanced, masked, drive thru experience complete with a theme. "Driving through the decades" had a photo booth, party favors, music and dancing. And it was everything that 17-year-old Veronica Larson could dream of.“There’s a bridge that crosses from the hospital into the employee parking and I looked up and all the nurses that had finished their shift were up in the bridge they were all cheering and clapping there was music playing,” Larson said.Cancer treatment is hard enough. Add in COVID-19 and its restrictions, and teens like Larson have struggled.“I would be considered immunocompromised so I’m being extra careful but there are safe ways like this oncology ball, but I am able to see my peers and that’s one of the reasons why it was so important to everyone being able to have that interaction in such a time of isolation,” Larson said.Back in 2015, Larson was an aspiring gymnast. She suffered a pulled hamstring that led to exhaustion and then a diagnosis of leukemia. She was only 12 years old. Now, she's in remission and building back her strength. And found her way back into gymnastics as a coach.“My hair is growing back. I’m trying to rock the short hair,” Larson said.The medical staff at CHOC is a huge part of Larson's life. After all, they helped her apply for college from her hospital bed. The soon to be freshman at UCLA wants to go into pediatric medicine and credits the children's hospital that gave her so much life with helping her find her future.“Obviously it’s an area I’ve been involved in and I think I can make a difference there and I’ve met incredible people and I would love to be a part of a team of such amazing people,” she said.Amazing people who all got to be together, even if from a distance for one night, created an evening that was just as magical for the staff as it was for the patients.“The night itself blew me away it was beyond anything I could have imagined,” Larson said.Proof that the coronavirus can't steal joy, happiness, or prom. 3390

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