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梅州急性尿道炎症状治疗
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发布时间: 2025-06-03 20:37:12北京青年报社官方账号
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  梅州急性尿道炎症状治疗   

CAPE CANAVERAL, Fla. (AP) — Mars is about to get its first U.S. visitor in years: a three-legged, one-armed geologist to dig deep and listen for quakes.NASA's InSight makes its grand entrance through the rose-tinted Martian skies on Monday, after a six-month, 300 million-mile (480 million-kilometer) journey. It will be the first American spacecraft to land since the Curiosity rover in 2012 and the first dedicated to exploring underground.NASA is going with a tried-and-true method to get this mechanical miner to the surface of the red planet. Engine firings will slow its final descent and the spacecraft will plop down on its rigid legs, mimicking the landings of earlier successful missions.That's where old school ends on this billion U.S.-European effort .Once flight controllers in California determine the coast is clear at the landing site — fairly flat and rock free — InSight's 6-foot (1.8-meter) arm will remove the two main science experiments from the lander's deck and place them directly on the Martian surface.No spacecraft has attempted anything like that before.The firsts don't stop there.One experiment will attempt to penetrate 16 feet (5 meters) into Mars, using a self-hammering nail with heat sensors to gauge the planet's internal temperature. That would shatter the out-of-this-world depth record of 8 feet (2 ? meters) drilled by the Apollo moonwalkers nearly a half-century ago for lunar heat measurements.The astronauts also left behind instruments to measure moonquakes. InSight carries the first seismometers to monitor for marsquakes — if they exist. Yet another experiment will calculate Mars' wobble, providing clues about the planet's core.It won't be looking for signs of life, past or present. No life detectors are on board.The spacecraft is like a self-sufficient robot, said lead scientist Bruce Banerdt of NASA's Jet Propulsion Laboratory."It's got its own brain. It's got an arm that can manipulate things around. It can listen with its seismometer. It can feel things with the pressure sensors and the temperature sensors. It pulls its own power out of the sun," he said.By scoping out the insides of Mars, scientists could learn how our neighbor — and other rocky worlds, including the Earth and moon — formed and transformed over billions of years. Mars is much less geologically active than Earth, and so its interior is closer to being in its original state — a tantalizing time capsule.InSight stands to "revolutionize the way we think about the inside of the planet," said NASA's science mission chief, Thomas Zurbuchen.But first, the 800-pound (360-kilogram) vehicle needs to get safely to the Martian surface. This time, there won't be a ball bouncing down with the spacecraft tucked inside, like there were for the Spirit and Opportunity rovers in 2004. And there won't be a sky crane to lower the lander like there was for the six-wheeled Curiosity during its dramatic "seven minutes of terror.""That was crazy," acknowledged InSight's project manager, Tom Hoffman. But he noted, "Any time you're trying to land on Mars, it's crazy, frankly. I don't think there's a sane way to do it."No matter how it's done, getting to Mars and landing there is hard — and unforgiving.Earth's success rate at Mars is a mere 40 percent. That includes planetary flybys dating back to the early 1960s, as well as orbiters and landers.While it's had its share of flops, the U.S. has by far the best track record. No one else has managed to land and operate a spacecraft on Mars. Two years ago, a European lander came in so fast, its descent system askew, that it carved out a crater on impact.This time, NASA is borrowing a page from the 1976 twin Vikings and the 2008 Phoenix, which also were stationary and three-legged."But you never know what Mars is going to do," Hoffman said. "Just because we've done it before doesn't mean we're not nervous and excited about doing it again."Wind gusts could send the spacecraft into a dangerous tumble during descent, or the parachute could get tangled. A dust storm like the one that enveloped Mars this past summer could hamper InSight's ability to generate solar power. A leg could buckle. The arm could jam.The tensest time for flight controllers in Pasadena, California: the six minutes from the time the spacecraft hits Mars' atmosphere and touchdown. They'll have jars of peanuts on hand — a good-luck tradition dating back to 1964's successful Ranger 7 moon mission.InSight will enter Mars' atmosphere at a supersonic 12,300 mph (19,800 kph), relying on its white nylon parachute and a series of engine firings to slow down enough for a soft upright landing on Mars' Elysium Planitia, a sizable equatorial plain.Hoffman hopes it's "like a Walmart parking lot in Kansas."The flatter the better so the lander doesn't tip over, ending the mission, and so the robotic arm can set the science instruments down.InSight — short for Interior Exploration using Seismic Investigations, Geodesy and Heat Transport — will rest close to the ground, its top deck barely a yard, or meter, above the surface. Once its twin circular solar panels open, the lander will occupy the space of a large car.If NASA gets lucky, a pair of briefcase-size satellites trailing InSight since their joint May liftoff could provide near-live updates during the lander's descent. There's an eight-minute lag in communications between Earth and Mars.The experimental CubeSats, dubbed WALL-E and EVE from the 2008 animated movie, will zoom past Mars and remain in perpetual orbit around the sun, their technology demonstration complete.If WALL-E and EVE are mute, landing news will come from NASA orbiters at Mars, just not as quickly.The first pictures of the landing site should start flowing shortly after touchdown. It will be at least 10 weeks before the science instruments are deployed. Add another several weeks for the heat probe to bury into Mars.The mission is designed to last one full Martian year, the equivalent of two Earth years.With landing day so close to Thanksgiving, many of the flight controllers will be eating turkey at their desks on the holiday.Hoffman expects his team will wait until Monday to give full and proper thanks.___The Associated Press Health & Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content. 6433

  梅州急性尿道炎症状治疗   

Celebrities including Amy Schumer and Chelsea Handler have launched an Instagram campaign targeted at Ivanka Trump, urging the US President's daughter to act on the administration's family-separation policy and calling for the resignation of Homeland Security Secretary Kirstjen Nielsen.As part of the campaign, well-known figures followed by Ivanka Trump on Instagram -- including not just Schumer and Handler, but also American fashion entrepreneur Sophie Amoruso and British model Cara Delevingne -- have been posting messages detailing the alleged abuses of children under controversial family separations at the US-Mexico border in an effort to flood her feed.The coordinated messages begin: "Dear Ivanka, you follow me on social media. You said family separation was a 'low point' for you. The low point is for the separated families. You spoke in past tense. This crisis is ongoing."The White House did not respond to a request for comment.The campaign began after Trump broke her silence on family separations on Thursday, saying during an Axios News Shaper conversation that it "was a low point" of her time in the White House."I felt very strongly about that and I am very vehemently against family separation and the separation of parents and children so I would agree with that sentiment. Immigration is incredibly complex as a topic. Illegal immigration is incredibly complicated." 1412

  梅州急性尿道炎症状治疗   

CATALINA, Calif. (KGTV) - Teeth marks from a great white shark are proof of a San Diego kayaker's narrow brush with danger off the coast of Catalina Island. The incident happened as Danny McDaniel and Jon Chambers were kayaking Saturday morning near Ship Rock, about two miles east of Catalina. The excursion was part of a scuba diving trip coordinated by Power Scuba from the island's Boy Scouts camp."Felt push to the left, looked to right, giant great white shark a foot from my boot," said McDaniel. "His upper half of body was out of the water, his dorsal fin was out of the water."Chambers was the first to notice the 19-foot shark before McDaniel turned around."Look at it and said, 'oh crap, oh crap, oh crap'," said Chambers. "I yelled at him to hit it."The shark had its jaws clamped on the back of the nine-foot-long kayak, inches from McDaniel. "Saw a giant, triangular, conical-shaped head right there and a huge body. Just a massive body," said McDaniel.Both men said they were frozen in fear as the great white shark hung on to the kayak for four or five seconds. Eventually, the shark let go, leaving behind puncture wounds and two large teeth in the kayak. "I don't think he took a full chomp. I think he just took a nibble and pushed," said McDaniel.The kayakers kept their paddles out of the water and did not move for several moments lest the shark return. McDaniel was "literally frozen" during that time.Despite the close encounter, McDaniel and Chambers continued with their plan to scuba dive later Saturday evening."Won't keep me out of the water, won't scare me out of the water," McDaniel said of the encounter.McDaniel offered to buy the kayak from the Boy Scout camp, which turned down his offer, according to Power Scuba owner Bill Powers."I think I've had my fill of great white sharks; I'm good. But I'm fortunate to have this experience," said McDaniel."It's one for the books. Not something you want to replicate," said Chambers. "He had the best shark attack experience without it being a bad story." 2043

  

CARLSBAD, Calif. (KGTV) - A Carlsbad high school teacher accused of "inappropriate conduct" is denying the allegations that has forced him out of the classroom for months.About two months ago, senior Rafa Fabito said his film teacher at La Costa Canyon High School, Speed Farris, was a no-show."I thought he was just absent," said Fabito.But that absence continued without an explanation -- until now. An email was sent home to parents earlier this week confirming Harris is currently assigned to the San Dieguito Union High School District's Administrative Office amid an investigation into allegations of "inappropriate conduct toward former students." Across the La Costa Canyon campus, there was a sense of disbelief."This doesn't jive with what his typical personality is like. I wouldn't expect this from him," said Fabito.Early this school year, student Mary Harris took a literature class taught by Farris."He liked to joke around but never made anyone feel uncomfortable. Just a happy, fine guy," said Harris.Some parents told 10News they were upset it took months for the school district to inform them. As for the teacher at the center of the probe, he agreed to talk to 10News. By phone, Farris told 10News he couldn't say much, but did maintain his innocence. "These allegations are false. They're unwarranted. I've cooperated with the district investigation as much as possible. This whole process is ruining my life and my career," said Farris. 10News reached out to the San Dieguito Union High School District to find out why it took several months to inform parents, and is waiting to hear back. A San Diego County Sheriff's Department spokesperson said a criminal case has been sent over the county District Attorney's Office for review. 1764

  

CARLSBAD, Calif. (KGTV) - Community members gathered outside Carlsbad Police Department on Friday, demanding change following a controversial encounter last week between an African American man and Carlsbad officers.“There was zero attempt for de-escalation,” said Yusef Miller with North County Civil Liberties Coalition. “We're asking that all citizens stand with us in solidarity to fight this police brutality," another activist told reporters.The Carlsbad Police Department previously released video which juxtaposed three camera angles of the confrontation with the Marcel Cox-Harshaw -- two from officer body cameras and one from a witness. The footage can be viewed here.The witness' phone shows officers using a Taser on Harshaw and pressing his head into the pavement. The two other videos from police body cameras show officers meeting medics who were called out to a report of a man face down on the side walk. Police say that while medics were evaluating him, he became agitated, yelled profanities and began walking quickly toward them.The department says that officers feared for the medics' safety, so they reached out and told him to stop, but he continued to yell as they tried to cuff him.Officers report that they then used a Taser to try to subdue him after he continued to yell, struggle, turn and pull away.Police report that they then restrained him by holding his head and body to the ground and asking him to calm down while cuffing him, but they say that he refused. The department goes on to say that they put a porous, breathable spit mask bag over his head to protect themselves from coming into contact with droplets from his nose and mouth.Activists dispute the department's account of the night.“They approached him from behind. They grabbed his wrist. They didn't introduce themselves. He wasn't harming anyone. He wasn't armed to our knowledge,” added Miller.Harshaw was taken to the hospital and later released and then cited for resisting arrest. Police believe that drugs or alcohol may have played a role.Police report that a number of factors were considered by officers to use force, including, in part, "The apparent immediacy and severity of the threat to officers or others - Mr. Harshaw charged unarmed fire personnel while yelling profanities."Police also reveal that a Taser can be used, in part, when, "The subject is violent or is physically resisting. Mr. Harshaw was physically resistant and behaved aggressively toward fire personnel."Community members are calling for reforms like a public forum for transparency on arrests, more de-escalation training, and a citizen's review board.Police say the investigation is ongoing and ask anyone who may have seen the incident to give them a call.On Friday, the Carlsbad Police Department sent the following to ABC10 News:“The City of Carlsbad Police Department has been asked to comment on the North County Civil Liberties Coalition Press Conference.”“The Police Department has previously released information about the June 11, incident. That information, including the officers’ interactions, can be found in its entirety here.”“The Police Department understands that ongoing officer training is crucial for effective community policing. To that end and to provide additional information, here is a list of de-escalation related training that has been provided to Carlsbad Police officers.In December of 2015, officers received an 8-hours of Emotional Intelligence Training.In 2017, officers received an 8-hour Crisis Intervention Behavior Health Training.In 2018, Officers received a 2-hour Bias Based Policing Training and will receive the training again in the summer of 2020.In November or 2018, officers received a 2-hour Tactical Communications Training and will received this training again in November of 2020.In December of 2019 and January of 2020, officers received training about changes to the law and the use of force. This was part of AB 392.In December of 2019, the Police Department hosted and had officers attend the first De-Escalation Training offered by the San Diego County District Attorney’s Office. The department assisted the District Attorney’s Office with the creation of the training curriculum.In 2020, the department created, with the assistance of the District Attorney’s Office, an 8-hour in-house De-Escalation Course. This training will be attended by all officers.Additionally, here are links to three Carlsbad Police Department news articles that relate to the subject of de-escalation.· San Diego County Police Chiefs’ and Sheriff’s Association Adopts Crisis Management and De-escalation Philosophy · Police Support #8cantwait · Police Halt Use of Carotid Hold 4705

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