长沙到医博医院的公交车(湖南长沙哪个医院看肠息肉) (今日更新中)

BOULDER, Colo. — A woman wants an apology from a convenience store chain after police bodycam footage shows that a store clerk in Colorado 151

As computers, tablets and cellphones have become a growing part of our lives, the exposure to blue light emitted from these devices increases. While blue light exposure has been known to cause strain in eyes, Oregon State University researchers studied the effect of blue light exposure on aging. Based on to their findings, exposure to blue light could cause aging to accelerate. For their study, researchers used common fruit flies and exposed them to 12 hours of blue LED light and 12 hours of darkness. To compare, researchers kept a group of flies in total darkness, as well as a group of flies that were exposed to light that had the blue wavelengths filtered out. The researchers said they chose fruit flies because their cellular and developmental mechanisms are similar to humans.The researchers said that flies exposed to blue LED light sustained damage to their retinal cells and brain neurons and had impaired locomotion. Even more stunning, some of the flies, which exhibited some brain damage, were mutants that did not develop eyes."The fact that the light was accelerating aging in the flies was very surprising to us at first,” said Jaga Giebultowicz, a professor of integrative biology at Oregon State. “We’d measured expression of some genes in old flies, and found that stress-response, protective genes were expressed if flies were kept in light. "We hypothesized that light was regulating those genes. Then we started asking, 'what is it in the light that is harmful to them,' and we looked at the spectrum of light. It was very clear cut that although light without blue slightly shortened their lifespan, just blue light alone shortened their lifespan very dramatically.” 1708

Baby No. 4 has arrived for Kim Kardashian West and Kanye West.The reality star/mogul tweeted about the new arrival on Friday."He's here and he's perfect!" she wrote.The pair welcomed the baby via surrogate, and he joins sisters North, 5, and Chicago 1, and brother Saint, 3.On "The Ellen Show" Thursday with her nieces and nephews, Kourtney Kardashian said her sister was supposed to join her but couldn't because the surrogate was in labor.Their mother and family matriarch, Kris Jenner, appeared surprised and said she was not aware labor had started.The baby's name is sure to be of interest.In January, Kardashian West said she had been Googling Armenian boys' names in honor of her family's heritage but hadn't found anything. 743

As cities around the country prepare for a surge of hospital patients as COVID-19 spreads, a 500-bed hospital in Philadelphia sits empty.According to the 166

Billionaire Tom Steyer has qualified for next week's Democratic presidential debate in Iowa.He'll be on stage alongside Joe Biden, Elizabeth Warren, Bernie Sanders, Pete Buttigieg and Amy Klobuchar. Steyer qualified by hitting polling requirements in South Carolina and Nevada, two of the early voting states. He said while campaigning in New Hampshire on Thursday that his campaign has momentum. A new Fox News poll conducted in South Carolina put Steyer at 15%, and another Fox News poll in Nevada put him at 12%. In previous early state and national polls, Steyer has mostly been in the low to mid-single digits. 627

来源：资阳报