太原肛瘘是什么样子图片(太原市便血专科医院) (今日更新中)

In regions of the United States and Mexico that are prone to hurricanes, aggressive spiders are evolving to survive and ride out the storm.When hurricanes rage along the Gulf of Mexico or charge up the East Coast, they can reshape an entire habitat in a short time. The winds destroy trees and spread debris for miles, putting new pressure on the creatures living in these environments.But how do creatures adapt when their habitats are so disturbed? Researchers looked at Anelosimus studiosus spiders that live in storm-prone areas along the coast to see how they changed. Their study was published Monday in the journal Nature Ecology and Evolution.These weather systems are called "black swan events": a surprising event with a major impact that is explained with the benefit of hindsight. They don't offer much lead time, so the researchers had to scramble to study the spider colonies before and after projected storms.The team monitored Subtropical Storm Alberto and Hurricanes Florence and Michael during the 2018 hurricane season. They tried to anticipate the systems' trajectories and study areas that included 240 female spider colonies, comparing them with areas where spider colonies were unaffected by such storms.The researchers returned to the sites hit by the storms 48 hours later. About 75% of the colonies survived the initial storm strikes."It is tremendously important to understand the environmental impacts of these 'black swan' weather events on evolution and natural selection," said Jonathan Pruitt, lead study author, evolutionary biologist and Canada 150 Chair in McMaster University's Department of Psychology, Neuroscience & Behaviour. "As sea levels rise, the incidence of tropical storms will only increase. Now more than ever we need to contend with what the ecological and evolutionary impacts of these storms will be for non-human animals."The A. studiosis spider species has two main personality traits that are inherited: docile and aggressive.Aggressiveness can be determined based on their speed, attackers pursuing prey, cannibalizing male spiders as well as eggs and their vulnerability to the invasion of predatory spiders.On the one hand, aggressive colonies are better at gathering resources in times of scarcity. But when deprived of food or subjected to overheating, aggressive colonies can also suffer from infighting."Tropical cyclones likely impact both of these stressors by altering the numbers of flying prey and increasing sun exposure from a more open canopy layer," Pruitt said. "Aggressiveness is passed down through generations in these colonies, from parent to daughter, and is a major factor in their survival and ability to reproduce."The researchers determined that after a storm passed, the colonies that aggressively pursued food and resources were able to produce more egg cases. The spiderlings also had a better chance of surviving into early winter.In areas that weren't hit by storms, docile colonies thrived.These findings were consistent even as the storms varied in duration, intensity and size. The researchers believe this shows that extreme events can shape animal behaviors. They would like to conduct more long-term studies to learn whether this is the case. 3250

It's National Distracted Driving Awareness Month, and there's a new push to keep roads safer. In Tennessee, the state with the highest levels of distracted-driving deaths in the country, police have taken a unique approach to catching distracted drivers. Officers are riding on city buses and watching drivers around them, catching ones on their phones and then calling for backup to pull them over. "This is distracted driving week throughout the United States, and so this week, we're spending time working on our roadways to bring attention to our drivers about this type of behavior that we're trying to stop," explains Steve Dillard with the Tennessee Highway Safety Office. In California, drivers can be issued a ticket for just holding your phone behind the wheel, even at a traffic stop. Now, the National Transportation Safety Board is pushing the state to take it a step further and become the first to ban hands-free calls, saying it can still cause drivers to be distracted. But are hands-free devices really a distraction? An instructor with the MasterDrive driving school in Denver, Colorado says hands-free technology still takes the driver’s focus away from driving their vehicle. “While you're looking at your screens and trying to figure out which button to push, the cars in motion,” the instructor says. “The car is not being driven by you at that point, and at any point, things could happen.”Distracted driving claimed more than 3,000 lives in 2017 alone. 1495

Important announcement. From Oahu, Hawai?i. #StandWithTulsi pic.twitter.com/XcHshtgVYA— Tulsi Gabbard ?? (@TulsiGabbard) March 19, 2020 148

Lauren Mulvihill did not know what to expect when she was called to the hospital for an Uber pick up.89-year-old Ronald Dembner had just been discharged from the hospital with no one to take him home.Last week, Mulvihill drove Dembner from the hospital in Henry County, Georgia, to his home and helped him inside. When she saw the terrible condition of his home, she knew she needed to help.Dembner, who Mulvihill calls Mr. Ronald, is a widower and veteran who now lives alone with his dog King. He has no living family. Mulvihill said that Dembner had not called someone to help clean his house out of fear they would take it away from him.The veteran has been living in squalor. Dembner has his wits about him, but he has a hard time getting around, cleaning the house and picking up after his dog.Mulvihill knew she couldn't clean up the house herself. That's when the single mom went to Facebook to call for help. The response was overwhelming.Dozens of volunteers came forward and began to clean and help strip apart the house. In just a week's time, they have already removed all of the garbage, the old furniture and the old carpet.The next step is painting the walls and putting in new floor. They're also trying to get someone to come fix the mold situation, Mulvihill says the work can be at lot at times but she tries to work one room at a time.The public Facebook group, 1395

John Legend made a surprise visit to Dayton, Ohio, Sunday, a week after a shooting there left nine people dead and at least 31 others injured.The Grammy Award-winning singer, a native of Springfield, Ohio, about 30 minutes northeast of Dayton, put on a concert for the families of the victims and staff from local businesses in the city's Oregon District where the shooting took place.Before the concert, Legend met with Mayor Nan Whaley and employees of Heart Mercantile. The gift store is across the street from the site where a man armed with a .223-caliber high-capacity rifle unleashed a barrage of bullets on revelers enjoying a night out in the early morning hours of August 4. He was killed by police officers soon after he began firing.Whaley thanked Legend in a tweet for coming to shop in the district and talk about gun reform laws."It is more important now than ever for us to come together to support our local communities," Legend tweeted Sunday following his visit.In another tweet, Legend called for people to take action by calling their senators and demanding they vote for stronger gun safety laws.People who work in the Oregon District told CNN that the visit was therapeutic following an emotional week.Andy Rowe, assistant general manager at Blind Bob's, the venue where Legend performed, told CNN that the entire district appreciated the singer's visit."I think I can say the Oregon Historic District was profoundly moved to have @johnlegend bear witness to our heartache, and help heal our community," Rowe said in a text.Employees of Heart Mercantile said they were touched by Legend's visit."It felt like the first positive beautiful moment we've felt all week," Alison Bohman told CNN by text. "We loved each other so hard. And John loved us." 1783

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