江苏穿戴式环甲膜穿刺模型(广西化学伤救护训练模拟考核系统) (今日更新中)

CAPE CANAVERAL, Fla. (AP) — NASA's next Mars rover finally has a name: Perseverance. The six-wheeled robotic e

BALTIMORE — The Frederick County State's Attorney's Office in Maryland indicted a man who knowingly transmitted HIV to several women he met on dating sites.According to officials, the Frederick County Police Department started an investigation in 2017 on 34-year-old Rudolph Jericho Smith after different women told authorities that they believed Smith had infected them with HIV.During the department's investigation, officials were able to conduct witness interviews which informed them that Smith knew of his HIV-positive status since 2014. A search warrant for Smith's blood was executed and a detective confirmed his positive status. The department was later notified that Smith continued to meet women on dating sites and had unprotected sex with them without telling them about his status.Smith has been charged with first degree assault, reckless endangerment and knowing transfer of HIV.The Frederick Police Department is asking anyone who may have had a sexual relationship with Smith around or after July 2017 to leave contact information on the 1069

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

CAPE CANAVERAL, Fla. (AP) — NASA's next Mars rover finally has a name: Perseverance. The six-wheeled robotic e

An elderly dog found discarded in a trash can in north Philadelphia has died from her injuries, leaving fans of "Pringles" devastated.Pringles was found with a traumatic head injury at the bottom of a trash can October 3 when she was rescued by the 261

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