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郑州河南治疗近视医院
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发布时间: 2025-05-31 13:36:02北京青年报社官方账号
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  郑州河南治疗近视医院   

A new species of prehistoric reptile has apparently been discovered within the depths of the Petrified Forest National Park in northeastern Arizona.Named Skybalonyx skapter, the fossilized remains are believed to be a new species of drepanosaur, a reported 220-million-year-old burrowing reptile that potentially looked like a combination of an anteater and chameleon, the Petrified Forest National Park said Tuesday in a news release.Skybalonyx skapter, though, may have looked even more peculiar, the release said.Drepanosaurs have been noted to have interesting features, such as "enlarged second claws, bird-like beaks, and tails ending with a claw," the release said.The discovery was made by research teams from Petrified Forest National Park, Virginia Tech, University of Washington, Arizona State University, Idaho State University, and the Virginia Museum of Natural History, according to the release.Their findings were reportedly published on Oct. 8 in the Journal of Vertebrate Paleontology. The study compared the claws of drepanosaurs to Skybalonyx skapter to modern animals, and reportedly found that Skybaonyx skapter's claws were similar to moles, echidnas, and mole-rats.Adam Marsh, the lead paleontologist at the Petrified Forest, said in an email that the bones were discovered during the summers of 2018 and 2019 as part of a paleontological dig.Due to their small size, the remains were reportedly difficult to find using traditional methods. Essentially, research teams used a series of metal screens and water to sift and break down rocks to find the fossils.He said the bones were found in the eastern expansion of the forest that was acquired in 2011. He said more than 3,000 fossils have been discovered there in the last two years.As for the drepanosaurs project, he said "we are just starting this project, and we will be continuing to collect fossils from this and other sites."This story was originally published by Josh Frigerio at KNXV. 1977

  郑州河南治疗近视医院   

A University of Maryland football player who died of heat stroke this summer did not receive proper medical care, and some members of the training staff made mistakes, according to preliminary results of an independent review.Jordan McNair, 19, died June 13, two weeks after taking part in a workout at Maryland's outdoor practice fields, CNN affiliate WJZ reported. Last week, the university placed its head football coach, D.J. Durkin, and members of the athletic staff on administrative leave pending the investigation into circumstances surrounding the death.The preliminary findings of an external review, which will be made public in September, found that an emergency response was not followed in McNair's case and the care the university provided was not consistent with best practices, Athletic Director Damon Evans said Tuesday.McNair's heat illness was not promptly identified, and athletic training staff did not take his temperature and apply a cold-water immersion treatment, Evans said.The university has also parted with its head strength coach, Rick Court, Evans said."We will honor Jordan's life and we will ensure that a tragedy such as this never happens on our campus again by working every single day to provide the safest environment for our student-athletes on and off the field," Evans said, fighting back tears.Evans announced the preliminary findings hours after he and university President Wallace D. Loh met with McNair's family and shared the findings with them.The two officials apologized to McNair's family during that meeting in Baltimore and issued public apologies Tuesday.Loh said he told the family the "university accepts legal and moral responsibility for the mistakes that our training staff made on that fateful workout day."Loh said he also told McNair's family: "The university owes you an apology. You entrusted Jordan to our care, and he is never returning home."Since McNair's death, the university has given more training to athletic training staff and increased the number of breaks and cooling stations during practice, officials said.The 325-pound offensive lineman from Randallstown, Maryland, appeared in one game last season as a true freshman but ended up redshirting, hoping for a starting spot this year, according to the Bleacher Report.Court, who resigned on Monday, according to Bleacher Report, said he will cooperate with university investigations and "be transparent.""Jordan McNair's life and death are what we must all remember to put first as we face the future What did we learn? .... The gravity of the situation has deeply impacted my perspective on 'the why' I am coaching," Court said a statement.  2712

  郑州河南治疗近视医院   

A new lawmaker in Delaware is making headlines for becoming the first openly transgender person ever elected to a state Senate.Sarah McBride is projected to win Delaware’s First Senate District, which includes parts of Wilmington. 238

  

A recent study by the U.S. Centers for Disease Control and Prevention found that 6% of more than 3,000 health care workers who were tested had antibodies to coronavirus. Still, after being retested 60 days later, 28% of them had antibody levels so low they were no longer detected."These results suggest that serology testing at a single time point is likely to underestimate the number of persons with previous SARS-CoV-2 infection, and a negative serologic test result might not reliably exclude prior infection," the authors of the study said.According to the CDC, blood samples were taken from 3,248 frontline health care personnel at 13 hospitals between April 3- June 19, 2020.194 of those healthcare workers had detectable antibodies to COVID, the agency said.Participants with higher initial antibody responses were more likely to have antibodies detected at the follow-up test than were those who had a lower initial antibody response, the study concluded.The authors added that the study shows that the window is limited for collecting potentially useful "convalescent plasma" from the blood of patients who have fought off COVID-19. 1151

  

A Texas man is facing riot charges in Minnesota for allegedly firing a semiautomatic rifle into a Minneapolis police building during demonstrations following the death of George Floyd.A criminal complaint alleges Ivan Harrison Hunter, 26, is a member of the Boogaloo Bois, a group that espouses violent anti-government views, and that he drove to Minneapolis at the end of May with the intent of participating in a riot.U.S. Attorney Erica MacDonald announced Hunter faces charges of traveling across state lines to participate in a riot.Floyd, who was Black, died on Memorial Day after a white Minneapolis police officer pressed his knee on his neck for nearly eight minutes. The incident sparked protests against police racism and brutality across the country.Federal investigators have said he fired 13 rounds from a semiautomatic rifle into the Minneapolis Police Department's Third Precinct building while looters were inside. The building later burned. They say they have video of the incident and Hunter was identified from a screen grab of that video.According to the complaint, Hunter made statements on social media describing what he did in Minneapolis.Police in Austin, Texas, stopped a pickup truck on June 3 in which Hunter was a passenger for multiple traffic violations. Hunter had six loaded magazines for a semiautomatic rifle in a tactical vest he was wearing. Officers also found multiple firearms in the truck.Several days after the stop, federal investigators learned of Hunter’s online affiliation with Boogaloo Bois member Steven Carrillo.Federal prosecutors have charged Carrillo in the death of a federal protective officer in Oakland, California, during a protest over Floyd’s death on the same night Hunter allegedly opened fire in Minneapolis.MacDonald said Hunter made his initial court appearance Thursday in San Antonio, Texas. It’s unclear if he has an attorney. 1903

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