石桥铺肾结石疼(肾结石是怎么形成的重庆) (今日更新中)

As students return to school and employees head back to the office all with new safety protocols likely including wearing a mask, a new study from Duke University explores which masks are more effective.Spoiler alert: A fitted N95 mask, usually reserved for those in the medical community, performed the best in their test. However, since many Americans do not have access to those and have been using a mix of store-bought or homemade cotton and fabric facial coverings, Duke tested 13 other kinds of masks.The study, which was published Friday, was prompted when a professor at Duke’s School of Medicine was asked to assist a local group buying masks in bulk for the community. According to CNN, the professor wanted to make sure the masks they bought were effective.Researchers gathered 14 kinds of masks, including the professionally-fitted N95 mask, a bandana, homemade cotton varieties, and a surgical mask. They then used a dark room, laser beam and cell phone camera to record how many droplets (which reflect the laser beam light) each mask allows through.For each mask test and the non-mask wearing control test, the speaker was recorded saying “Stay healthy, people” five times. Each mask was tested ten times. 1229

At least one person is dead and hundreds of thousands of homes are without power as Hurricane Michael moves inland from Florida to Georgia.Michael made landfall Wednesday around 2 p.m. ET as a Category 4 storm near Mexico Beach, Florida. The strongest storm to hit the continental US since Hurricane Andrew in 1992, Michael dashed homes into pieces, swallowed marinas and left piles of rubble where shopping centers once stood.Now a Category?1 storm with winds up to 75 mph, the storm is moving across southwestern Georgia about about 17 mph near Albany. Meanwhile, flooding continues along the Gulf Coast, where downed trees and utility polls are making precarious rescue efforts even harder. 721

At least three people were killed and a dozen others injured Tuesday after gunfire erupted near a Christmas market in the center of the French city of Strasbourg, French authorities said.Strasbourg police said an armed person entered the perimeter of the Christmas market by the Corbeau Bridge around 8 p.m., heading toward the Rue des Orfèvres. The suspect then opened fire, police said. Police said they have identified the shooter, who remains at large.Here are the latest developments: 497

BALDWIN PARK, Calif. - Arson officials in Los Angeles are investigating after someone set an official ballot drop box on fire Sunday night in Baldwin Park.The Baldwin Park Police Department said on Facebook that they and the Los Angeles County Fire Department responded to a ballot box on fire outside the Baldwin Park Library just before 8:30 p.m.According to police, ballots recovered from the box were turned over to the Los Angeles County Registrar's Office. 470

At least 285 U.S. children have developed a serious inflammatory condition linked to the coronavirus and while most recovered, the potential for long-term or permanent damage is unknown, two new studies suggest.The papers, published online Monday in the New England Journal of Medicine, provide the fullest report yet on the condition.The condition is known as multisystem inflammatory syndrome in children. It is considered uncommon and deaths are rare; six children died among the 285 in the new studies.Including cases in Europe, where it was first reported, about 1,000 children worldwide have been affected, a journal editorial said.The federal Centers for Disease Control and Prevention’s case definition includes current or recent COVID-19 infection or exposure to the virus; a fever of at least 100.4 for at least 24 hours; severe illness requiring hospitalization; inflammatory markers in blood tests, and evidence of problems affecting at least two organs that could include the heart, kidneys, lungs, skin or other nervous system.Digestive symptoms including nausea and diarrhea are common. Some children may have symptoms resembling Kawasaki disease, a rare condition in children that can cause swelling and heart problems.At least 35 states have had cases, and they seem to crop up a few weeks after local COVID-19 activity peaks, said Dr. Adrienne Randolph of Boston Children’s Hospital. She is a lead researcher for a multistate study that includes CDC scientists. The second paper involved 99 children in New York state, where the first U.S. cases occurred.Combined, the papers show 285 cases from March thru mid to late May but Randolph said additional U.S. children have been diagnosed in June.Most had current or recent COVID-19 infections but had previously been healthy.About 80% of children in the multistate study had heart-related problems, which included coronary aneurysms — a bulge in a heart artery that can be fatal.“Those need to be followed up,” Randolph said. “This is a life-threatening concern for a lot of patients.”Most affected children had no other health condition but about 30% were obese. The condition also appears to disproportionately affect Latino and Black children and boys.The average age was 8 years old. Researchers don’t know if adults can be affected.___Follow AP Medical Writer Lindsey Tanner at @LindseyTanner.___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. (hyperlink ‘support’ with this: http://bit.ly/2ptoKnW 2618

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