商洛透明肺段模型(太原人体针灸模型178cm) (今日更新中)

United Airlines is sending layoff warnings to 36,000 employees, nearly half its U.S. staff. It's the clearest signal yet of how deeply the COVID-19 pandemic is hurting the airline industry. United officials said Wednesday that they still hope to limit the number of layoffs by offering early retirement, but they have to send notices this month to comply with a law requiring that workers get 60 days' notice ahead of mass job cuts. The furloughs would include 11,000 flight attendants, 11,000 customer service and gate agents, 5,500 maintenance workers and 2,250 pilots. United officials said the notices cover 45% of its U.S. employees.Air travel in the U.S. dropped about 95% by mid-April. It has recovered slowly but remains down about 75% from a year ago. 768

Universal Orlando has updated its face mask policy after reopening amid the coronavirus pandemic.When the Florida theme park reopened on June 3, the resort said guests could remove their masks while eating and drinking.But this week, the park updated its mask policy saying guests must be "actively eating or drinking" and socially distance themselves before removing their masks."Guests must wear face coverings at all times, unless they are actively eating or drinking, and they must also be socially distanced from other travel parties while consuming their food or beverage," the policy states. "Inside restaurants, we have arranged tables and seating so that guests can safely remove their face coverings while enjoying their dining experience."The park stated that the face coverings must cover your mouth and nose and be at least two layers thick.The resort says the following are not permitted at Universal Orlando:Face coverings with exhalation valvesFace coverings that are not secured with ear loops or secured around your headFace coverings that include mesh material or holes of any kindCostume masks or veils, per our costume guidelinesThe masks must also fit under your chin securely and fit against the side of your face snug. 1250

Two studies released this week are offering some hope for parents and school districts looking to reopen this month across the country.The studies, one from the United Kingdom and the other from Australia, were published in the journal The Lancet Child & Adolescent Health this week and try to help inform ongoing discussions around reopening schools.A team in Australia was able to look at results from students who remained in class between January and early April.Researchers found even though schools remained open in New South Wales, children and teachers did not contribute significantly to the spread of Covid-19 -- because good contact tracing and control or quarantine strategies.Their data showed that while 27 children or staff at 25 schools and daycares had attended school while infectious with Covid-19, only 18 other people later became infected.That’s an attack rate of 1.2 percent. Overall, the attack rate of child-to-child transmission was 0.3 percent, while the attack rate of adult staff member to another adult staff member was 4.4 percent.“With effective case-contact testing and epidemic management strategies and associated small numbers of attendances while infected, children and teachers did not contribute significantly to COVID-19 transmission via attendance in educational settings,” the Australian team of researchers state in their report.In the British study, researchers looked at models on returning to school with different scenarios, including increased testing, isolation measures for positive cases, and levels of contact tracing.The models the researchers ran assumed that 75 percent of those with positive test results are contacted, provide information for contact tracing and isolate, and that 90 percent of that person’s contacts are reached by contact tracers and asked to isolate.The team assumed between 59 percent and 87percent of symptomatic people in the community would need to get tested at some point during their infection, testing results would be returned in one day, and those asked to isolate would do so for 14 days.Researchers made it clear that these levels would be needed to reopen schools.“However, without these levels of testing and contact tracing, reopening of schools together with gradual relaxing of the lockdown measures are likely to induce a second wave that would peak in December, 2020,” their report stated. “To prevent a second COVID-19 wave, relaxation of physical distancing, including reopening of schools, in the UK must be accompanied by large-scale, population-wide testing of symptomatic individuals and effective tracing of their contacts, followed by isolation of diagnosed individuals.” 2683

Two students were injured after a gun accidentally discharged at a school in Fulton County, Georgia on Thursday.Police received reports of a loud pop coming from a classroom at Banneker High School just before 3:30 p.m.According to a spokesperson with Fulton County Schools, a bullet hit a female student in the ankle, and also grazed another student. Both students were treated for minor injuries, according to the spokesperson.Officials say officers searched the classroom and found a low-caliber handgun hidden in a box. It's believed the weapon was brought on school property in a book bag by a student, according to the school spokesperson.The spokesperson added that "the investigation into this incident is ongoing and the [Fulton County Schools Police Department] plans to file criminal charges against everyone involved in this incident in accordance with District policy."Three students will face charges in the incident. One student is being charged with one count possession of a weapon and one count of a weapon on campus. Two students are being charged with reckless conduct because of their contact with the weapon.The spokesperson told CBS46 the gun did not belong to the injured students.No bags of any kind are being allowed into the school building on Friday.  1297

UNION CITY, Calif. (AP) — Two boys were fatally shot while sitting in a van outside an elementary school early Saturday morning, police said.The shootings of the boys, ages 11 and 14, took place in the parking lot of Searles Elementary School, the East Bay Times reported.Callers to 911 reported hearing gunfire at 1:26 a.m., the newspaper said. Authorities said that when officers arrived, they found the boys.The older boy died at the scene, and the younger child died en route to a trauma center, the Times reported.New Haven Unified School District Superintendent John Thompson said in a statement that the victims were minors.The boys attended schools in the district, Thompson and a district spokesman said.No arrests have been made in connection with the killings.Police Lt. Steve Mendez said there was no sign of a connection between the shooting and the school where it took place. People occasionally gather in the relatively secluded parking lot, Mendez told the Times.Thompson said the school district “will have support for our students and staff at the sites where these students attended when school resumes after the Thanksgiving break.”The district also will work with the Union City Police Department “to ensure that our schools are as safe as they can be,” he said.Police are investigating the possibility that an earlier shooting may be related to the slayings, the Times reported. About 12:30 a.m. on Nov. 20, two men were shot and wounded near an intersection in Union City.The men were treated at a local hospital and released. Police told the newspaper that no evidence so far has linked the two incidents. 1638

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