临沧妇科调理哪家医院好(临沧阴部上起了红疙瘩) (今日更新中)

If you're interested in fish who are scary-looking, poisonous and chock-full of elaborate defense mechanisms, look no further than the stonefish, a genus of fish that populate coastal waters of the Indo-Pacific region.As if their deadly venom and spiny exteriors weren't enough, scientists at the University of Kansas have found that stonefish also have a hidden switchblade on their face that they can flick out whenever they feel like they're in danger.Scientists call the bony, blade-like protrusion a "lachrymal saber," because it is located on a bone under the fish's eyes. Also, "lachrymal saber" is just a really metal-sounding name.William Leo Smith, associate curator and associate professor of ecology & evolutionary biology at KU, first started to understand how the lachrymal saber worked 15 years ago, when he was dissecting a stonefish he kept as a pet.This is a game-changerHe tells CNN the mechanism isn't just a cool new discovery (although it's that, too). It also changes the scientific understandings and classifications of this particular type of fish."It opens up these ideas of ecological questions. Muscular systems, bone systems, nervous systems all came together to form this. What led to its evolution or use?In other words, he says, "Why do we see this accumulation of so many horrible things on one fish?"The lachrymal saber is housed inside the fish's head, and they use their cheek muscles to deploy it. Though some stonefish are venomous, the saber is not.It could be a sex thing, tooSmith says he and his fellow researchers have reason to believe the saber isn't just for warding off predators: It could be a sex thing, too."There is evidence pushing towards that," he says. "They may use this in battles with other members of their species, like ram horns. It may also be involved in courtship behaviors."Oh, and the sabers glow."It's fluorescent green," Smith says. Since stonefish rely on camouflage for both protection and hunting prey, Smith doesn't think the fluorescence has a defensive purpose like, say, warning off predators.There are 134 described species of stonefish, and by Smith's observation, all of them have some form of lachrymal saber.  2202

Hurricane Maria made landfall Wednesday in southeast Puerto Rico, ripping trees out of the ground and entangling two-thirds of the island in hurricane-force winds.Maria made landfall near the city of Yabucoa with winds of 155 mph -- just 2 mph short of Category 5 status, the National Hurricane Center said.By 9 a.m., those winds had weakened to 145 mph. But Maria is still a Category 4 hurricane, capable of ripping roofs off houses. 442

HOUSTON - A social media influencer was found dead along the side of a road in Houston, a day after going missing, leaving many questions for friends and family. Alexis Sharkey’s friends are now telling media outlets she feared for her safety.Sharkey was found dead Saturday morning by Houston public works crews and was not wearing any clothes, according to local media. Investigators say she had no visible wounds, and the cause of death is pending an autopsy. They also say there was no attempt to hide the body along the road.The 26-year-old shared details of her life and fashion on Instagram, gaining a large following of more than 26,000 followers initially, it has grown to 40,000 following news of her disappearance. She also had a skincare and hair company called Monat. 788

Immigration and Customs Enforcement agents have released more people seeking asylum in the United States from custody, citing a shortage in space.The release comes as thousands of people fleeing violence in Central America as part of a migrant caravan are beginning to arrive in Tijuana, hoping to enter the U.S. and claim asylum here.Earlier this year, federal officials released several hundred families to relatives, church groups or other organizations due to statutory limitations on how long people can be held in custody."These people, they don't speak English they don't have any money, and they are in another country and they don't have a cell phone to call their relatives," said Magdalena Shwartz, who works with churches and ICE to help find places to stay until relatives can pick up those the government releases.For families detained by immigration authorities, under a settlement agreement and subsequent decision, unaccompanied children or families can only be held in custody for 20 days before being released while their cases work their way through immigration courts.Pastors at a church in Mesa said they recently received a call from ICE asking if the church could help at least one hundred people, who were dropped off Tuesday. Others were given a bus ticket and dropped off at a bus station in Phoenix."They don't have another option," Shwartz said. "They cannot keep the people detained there for a long time, because they are getting more people."Multiple attempts to seek comment from Immigration and Customs Enforcement on Tuesday's release were not returned.Those who are ultimately granted asylum by a judge are allowed to stay, while those whose applications are denied will be deported. 1747

In a World Series dominated by home runs and the long ball, it was the Game 7 pitching performance on Wednesday by the Houston Astros which led the squad to the franchise's first ever World Series title. The Astros defeated the Los Angeles Dodgers 5-1 to win the best-of-seven series by a 4-3 margin. The series was full of twists and turns, with no shortage of excitement. RELATED:?Looking back at whirlwind 2017 World SeriesMembers of the Astros said that the World Series title had extra meaning after a Hurricane Harvey  devastated Houston in late August. The storm forced Houston to play some of its home games in Tampa as the city recovered.  681

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