抚顺工业吸尘器(大连大功率工业吸尘器) (今日更新中)

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

Be honest. How often do you read the fine print when signing important documents? It turns out some people read the fine print, and in one case, it earned a woman ,000. SquareMouth, an insurance company that provides travel coverage, launched a contest last month that stated that the first person to contact the company would win a ,000 prize. The catch was that the contest's announcement was buried within the fine print of an insurance contract. Donelan Andrews of Georgia read about the contest on Page 7 of her insurance contract. It only took 23 hours after the contest began for SquareMouth to find a winner. According to the company, it had sold 73 policies with contest information before Andrews contacted them. Andrews said in a press release that she, as a home economics and family consumer science teacher, emphasizes reading the fine print to her students. “I used to put a question like that midway through an exam, saying ‘If you’re reading this, skip the next question.’ That caught my eye and intrigued me to keep reading," she said. SquareMouth launched the contest as a way to highlight the importance of reading the details of a contract. "Over the past 16 years, we’ve learned that many travelers buy travel insurance and just assume they’re covered if anything goes wrong, without actually reading the details of their policy," the company said in a release. "However, this often leads to claims for losses that are not covered. This lack of understanding is one of the biggest reasons travel insurance claims are denied."SquareMouth also made a ,000 contribution to Reading Is Fundamental, as well as ,000 to the two schools where Andrews teaches. Andrews is going to use the winnings to go on another trip, this time to Scotland with her husband for their wedding anniversary. 1827

BUFFALO, N.Y. — Hours before a 3-year-old boy was found sleeping alone on a porch in Buffalo, New York, the rental car that his parents were driving was burned and human remains were found inside, police said.The parents of the boy, 24-year-old Nicole Merced Plaud and 31-year-old Miguel Anthony Valentin-Colon, as well as their friend, 29-year-old Dhamyl Mirella Roman-Audiffred, are considered missing persons.Now, Buffalo Police have released video that identifies persons of interest after the burned out vehicle was discovered in Buffalo's Black Rock neighborhood near where the boy was found. Police were also able to make a connection between the burned-out car and the toddler found. The department released three videos. The first shows an individual with a shirt over their head walking to the location on Tonawanda Street where the car would be burned. The second shows what appears to be the same person, moving quickly away from the scene with another individual and a child. The individual stops to put a shirt back on their head. On the left side of the frame, a flash can be seen that may be the car being ignited in flames. The third video is a slower, enhanced version of the second video. 1219

An officer with the Oklahoma County detention center says he quit his job because he was not permitted to take a knee with protesters at an anti-police brutality demonstration in Oklahoma City.According to 218

As many as 20 correctional officers who work at the federal detention center where Jeffrey Epstein died by suicide received grand jury subpoenas last week relating to an investigation into his death, according to a source with knowledge of the situation.Investigators are trying to recreate the events that happened on the night Epstein died nearly two weeks ago at the Metropolitan Correctional Center in New York, the source said.For example, investigators want to talk to the lieutenants who were in charge that night to get details on rounds that were not made, the source said. Epstein was supposed to be checked on regularly.More subpoenas could be in the works as the investigation widens, the source added.CNN has reached out to the Department of Justice for comment. 787

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