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A subject coughing in a cyclic incident. Top view of airborne droplet transmission with and without wearing a surgical mask. The top and bottom figures show the results at 4 s and 5 s, respectively. We consider a surgical mask that exhibits an initial efficiency of ～91%. The cover does not prevent the transport of the saliva droplets entirely away from the subject. Many droplets penetrate the mask shield and some saliva droplet disease-carrier particles can travel more than 1.2 m. For visualization, the droplets were scaled by a factor of 600 compared to their actual size. The environmental conditions are zero wind speed, ambient temperature 20 °C, pressure 1 atm, and relative humidity 50%. The mouth temperature is 34 °C, and the face skin temperature is 32 °C. 779
A video of a woman who was allegedly resisting arrest while being beaten by police officers on a New Jersey beach on Saturday has been shared 1,000s of times since being published. Emily Weinman, a resident of Philadelphia, claimed that officers questioned her about underage drinking while she was on a beach in Wildwood, New Jersey. Weinman claimed that she was given an alcohol breath test, which came back negative. Weinman added in a Facebook post that the officers from the Wildwood, New Jersey Police were going to let her go, but when she asked officers why they were enforcing underage drinking rather than more serious crimes, that is when the officers had a change of heart. Weinman said that officers asked for her to identify herself, which she refused to do. Weinman claims an officer said, "I was gonna let you go but now I'll write you up." 894
A pedestrian bridge suddenly collapsed onto the road below near Florida International University, crushing cars and killing at least six people Thursday.Hours after the bridge collapsed, officials said early Friday that the rescue mission is now a recovery operation.Emergency crews worked overnight in what Miami-Dade Police spokesman Alvaro Zavaleta called a "very slow process" in order to preserve evidence and the safety of possible victims and rescuers, because of unstable conditions at the bridge.At least nine people were transported to hospitals for treatment, authorities said.Witnesses described hearing a loud boom Thursday and moments later, finding victims, including construction workers across the wreckage and people trapped in cars.Senator Marco Rubio, who visited the site Thursday, posted on Twitter: "The cables that suspend the #Miami bridge had loosened & the engineering firm ordered that they be tightened. They were being tightened when it collapsed today." Rubio has been a visiting professor at the university for the past 10 years.The bridge's main span, which weighs 950 ton, had just been installed Saturday over eight lanes, near the university in Miami. 1205
A restaurant that was destroyed in the August 4 explosion in the Lebanon capital of Beirut received a surprising, yet generous donation from actor Russell Crowe.Filmmaker Amanda Bailly and journalist Richard Hall wanted to help rebuild the restaurant Le Chef, which was visited by the late Anthony Bourdain, during one of the seasons of his culinary reality TV show. They created a GoFundMe page in hopes of raising ,000.But it was one particular donation that caught the eye of Hall. 495
A passenger aboard a Frontier Flight heading from Denver, Colorado to Charleston, S.C. on Thursday, claims a man allegedly assaulted two women and then urinated on another passenger’s seat.Pictures obtained by KMGH?television station in Denver show the man, who has not been identified, being taken away by police once Frontier Flight 864 landed in Charleston.The pictures provided by the passenger show the man urinating on the seat in front of him and also show him getting escorted by police.A Frontier Airlines spokesperson did not comment on the specific details of the incident when asked for comment, but said they were aware of the situation.“The safety and security of our passengers is our top priority at Frontier. We have been made aware of this situation and are working with the appropriate authorities.” 831
来源：资阳报