碑林高三学校专业效果好(蓝田县应届生高中排名) (今日更新中)

A study that was pre-published on Wednesday indicates that a coronavirus mutation is causing the virus to be more contagious, a study authored by the Houston Methodist Hospital found. The study, however, concluded that the virus is not more potent.The study examined 5,000 COVID-19 strains from the Houston metro area. The study found very two distinct waves over the summer.The researchers found that COVID-19 infections from the second wave contained the Gly614 amino acid replacement in spike protein. The researchers said that while this amino acid caused “significantly higher virus loads,” this did not increase the potency of the virus.“We found little evidence of a significant relationship between virus genotypes and altered virulence, stressing the linkage between disease severity, underlying medical conditions, and host genetics,” the study said. “Some regions of the spike protein - the primary target of global vaccine efforts - are replete with amino acid replacements, perhaps indicating the action of selection," according to a summary of the findings.The researchers said that the study is intended to help scientists understand the composition and trajectory of future infection waves.It is important to note that the study has not been peer reviewed, and was limited to cases in the Houston area. 1326

A non-profit in California has developed a way to capture poachers who snatch sea turtle eggs - building lookalike eggs with GPS trackers constructed inside them.According to research published Monday in the journal Current Biology, the InvestEGGator is a 3D-printed life-like turtle egg that can be tracked as far away as 137 kilometers (85 miles)."It replicates the appearance, weight, and feel of a real turtle egg. It is easily deployed at low risk to investigators, can be programmed and monitored remotely using web-based and smartphone applications, and is a low cost, allowing for deployment of many units at once," said the Ventura-based Paso Pacífico, the non-profit that developed the eggs.The decoy eggs are placed in real nests alongside real eggs, which are monitored and mapped every time they are moved, the non-profit said.The research showed that the decoy eggs provide a signal once every hour."Using data provided by the decoys, we identified trafficking routes and on two occasions properties of potential interest to law enforcement," researchers said in the journal. "Decoys also yielded anecdotal information, furthering our understanding of trafficking routes." 1194

A two-year audit of Facebook's civil rights record found "serious setbacks" that have marred the social network's progress on matters such as hate speech, misinformation, and bias. The audit's leader, former American Civil Liberties Union executive Laura Murphy, was hired by Facebook in May 2018 to assess its performance on vital social issues. The final, 100-page report released Wednesday outlines a "seesaw of progress and setbacks" on everything from bias in Facebook's algorithms to content moderation, advertising practices, and voter suppression."The purpose of this Audit has always been to ensure that Facebook makes real and lasting progress on civil rights, and we do believe what’s listed below illustrates progress," Murphy said in the audit. "Facebook is in a different place than it was two years ago — some teams of employees are asking questions about civil rights issues and implications before launching policies and products. But as I’ve said throughout this process, this progress represents a start, not a destination. While the audit process has been meaningful and has led to some significant improvements in the platform, we have also watched the company make painful decisions over the last nine months with real-world consequences that are serious setbacks for civil rights."In a news release, Chief Operating Officer Sheryl Sandberg said that the release of the audit couldn't have come at a more important time. "Facebook stands firmly against hate," Sandberg said in the release. "Being a platform where everyone can make their voice heard is core to our mission, but that doesn’t mean it’s acceptable for people to spread hate. It’s not. We have clear policies against hate — and we strive constantly to get better and faster at enforcing them. We have made real progress over the years, but this work is never finished and we know what a big responsibility Facebook has to get better at finding and removing hateful content."The audit's recommendations are not binding. 2011

A third leading candidate COVID-19 vaccine has entered a final stage of human testing in the United States. AstraZeneca announced Monday its potential COVID-19 vaccine has entered final trials in the U.S. to test the effectiveness and safety of the product. The Cambridge, England-based company said the trial will involve up to 30,000 adults from various racial, ethnic and geographic groups. The potential vaccine was invented by the University of Oxford and an associated company, Vaccitech.AstraZeneca said development of the vaccine known as AZD1222 is moving ahead globally with late-stage trials in the U.K., Brazil and South Africa. Further trials are planned in Japan and Russia.“To have just one vaccine enter the final stage of trials eight months after discovering a virus would be a remarkable achievement; to have three at that point with more on the way is extraordinary,” Health and Human Services Secretary Alex Azar said in a statement.Two other vaccine candidates began final testing this summer in tens of thousands of people in the U.S. One was created by the National Institutes of Health and manufactured by Moderna Inc., and the other developed by Pfizer Inc. and Germany’s BioNTech. 1215

A New York couple who were reportedly on their honeymoon drowned after being caught in a rip current. The United States State Department confirmed to E.W. Scripps that the U.S. citizens died on Oct. 28 while in Turks and Caicos.USA Today reported that New York Attorney Mohammad Malik, 35, and his bride, Dr. Noor Shan, 29, were married just four days when they drowned after being pulled under a rip current near their resort.The groom's father, Maqbool Malik, told Long Island Newsday that the loss is "devastating."He told the newspaper that the couple was pulled out from the water by witnesses, who performed CPR, but they both died at the scene.According to the National Oceanic and Atmospheric Administration, riptides are "powerful, narrow channels of fast-moving water."Officials with the State Department offered their "sincerest condolences to their loved ones on their loss" and said it had "worked to provide all appropriate consular assistance to the families" and "out of respect to the families during this difficult time, we have no further comment." 1075

来源：资阳报