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中山拉大便出血
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发布时间: 2025-05-24 08:53:08北京青年报社官方账号
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  中山拉大便出血   

On Monday, the NASA Mars InSight lander survived the "seven minutes of terror" during entry, descent and landing to safely arrive on Mars and took up permanent residence on the Red Planet. Unlike the rovers already on the Martian surface, InSight will stay put during its planned two-year mission.What will the stationary craft do until November 24, 2020?InSight has already been busy. Since landing, it has taken two photos and sent them back as postcards to Earth, showing off its new home. These initial images are grainy because the dust shields haven't been removed from the camera lenses yet.And late Monday, mission scientists were able to confirm that the spacecraft's twin 7-foot-wide solar arrays have unfurled. With the fins folded out, InSight is about the size of a big 1960s convertible, NASA said."We are solar-powered, so getting the arrays out and operating is a big deal," said InSight project manager Tom Hoffman at NASA's Jet Propulsion Laboratory. "With the arrays providing the energy, we need to start the cool science operations. We are well on our way to thoroughly investigate what's inside of Mars for the very first time."The solar arrays are key to helping InSight function. Although Mars receives less sunlight than Earth, InSight doesn't need much power to conduct its science experiments. On clear days, the panels will provide InSight with between 600 and 700 watts -- enough to power the blender on your kitchen counter, NASA said. During more dusty conditions, as Mars is known to have, the panels can still pull in between 200 and 300 watts.Within the next few days, InSight's 5.9-foot-long robotic arm will unfold and take photos of the ground surrounding the lander. This will help mission scientists determine where its will place instruments.This whole unpacking process as InSight settles into its new home will take about two to three months as the instruments begin functioning and sending back data.The suite of geophysical instruments will take measurements of Mars' internal activity like seismology and the wobble as the sun and its moons tug on the planet.These instruments include the Seismic Experiment for Interior Structures to investigate what causes the seismic waves on Mars, the Heat Flow and Physical Properties Package to burrow beneath the surface and determine heat flowing out of the planet and the Rotation and Interior Structure Experiment to use radios to study the planet's core.InSight will be able to measure quakes that happen anywhere on the planet. And it's capable of hammering a probe into the surface.This is why the information InSight sends back about its landing site is crucial. Creating a 3D model of the surface will help engineers understand where to place instruments and hammer in the probe, called the Mars mole HP3 by those who built it."An ideal location for our Mars mole would be one that is as sandy as possible and does not contain any rocks," HP3 operations manager Christian Krause said.Tilman Spohn, principal investigator of the HP3 experiment, said, "our plan is to use these measurements to determine the temperature of Mars' interior and to characterize the current geological activity beneath its crust. In addition, we want to find out how the interior of Mars developed, whether it still possesses a hot molten core and what makes Earth so special by comparison."The first science data isn't expected until March, but InSight will be sharing snapshots of Mars along the way. And InSight's magnetometer and weather sensors are taking readings of the landing site, Elysium Planitia -- "the biggest parking lot on Mars." It's along the Martian equator, bright and warm enough to power the lander's solar array year-round.The information InSight will gather about Mars applies to more than just the Red Planet. It will expand the understanding of rocky planets in general."This has important implications beyond just these two neighbors [Mars and Earth], as we are currently discovering thousands of exoplanets around other stars, some of which may be quite similar to Earth or Mars in terms of size, location and composition," said Jack Singal, a physics professor at the University of Richmond and a former NASA astrophysics researcher. 4251

  中山拉大便出血   

O’FALLON, Mo. (AP) - A suburban St. Louis election official who worked at a polling place on Election Day despite a positive test for the coronavirus has now died, raising concerns for the nearly 2,000 people who voted there.St. Charles County, Missouri, spokeswoman Mary Enger said in a news release Thursday that the person, whose cause of death is not yet known, was an election judge supervisor at the Blanchette Park Memorial Hall polling site in St. Charles.Enger says the county’s health department and election authority recently learned that the poll worker tested positive Oct. 30 for COVID-19 and was advised to quarantine for 14 days, but ignored the advice and worked Tuesday.“As this virus continues to spread, all aspects of the healthcare system are working together to remind the community that a positive COVID-19 test result requires that person to be responsible to others in the community,” says St. Charles County Director of Public Health Demetrius Cianci-Chapman in the news release. “There is no more important duty than protecting the health of our families, friends, and those who reside in the community with us.”Health officials said election workers at the site have been contacted and they are working with the election supervisor's family to "determine the worker’s whereabouts before the positive test results."Enger said they are advising some or all the other nine election workers at the polling place to test for the virus.Enger said "it is not anticipated that close contacts will include any of the 1,858 voters who were at the polling place Tuesday" since job duties for supervisors do not entail them to work close to voters, handle iPads, distribute pens, or taking voter identification.St. Charles County Director of Elections Kurt Bahr said masks or face shields were mandated for all election works at all times and the workers and voters were separated by Plexiglas barriers.Election workers practiced sanitation procedures throughout the day, Bahr added.If you were at the percent on Election Day, health officials said you should watch for symptoms and if you have any questions, you can contact the county’s COVID Hotline at 636-949-1899. 2195

  中山拉大便出血   

OCEANSIDE, Calif. (KGTV) - A man died Thursday in an Oceanside home after a fistfight with a relative, police said.Officers were called to the home in the 600 block of Arthur Ave. at 7:17 a.m. because of an argument between two men in the front yard. When police arrived, they found Nestor Jurado, 37, not breathing. Jurado was pronounced dead at the scene."It appears he died as a result of the injuries he sustained during the fight," Lt. Kedrick Sadler said. Police arrested 35-year-old Joel Cardona and booked him into the Vista Detention Facility on a murder charge.Sadler said the reason for the fight is unknown and no weapons were found at the scene. Jurado's sister told 10News Cardona is their mother's cousin. 763

  

OCEANSIDE, California— Oceanside lifeguards are warning beachgoers of multiple shark sighting off Oceanside Pier Friday.Lifeguards said they received multiple reports of an unknown species of shark, measuring about 12 feet in length, about 100 yards offshore on the south side of the pier just after 12:30 p.m.Two rescue vessels and a drone were sent out to the shark's last reported location, but no shark was located.The waters have been cleared for swimmers and surfers for about 1 mile north and 1 mile south of the area, according to lifeguards.Waters will remain open Saturday, barring any other reported sightings.While shark sightings are rare along San Diego County's coastline, lifeguards are asking beachgoers to keep an eye out.A 13-year-old boy was attacked by what is believed to have been a great white shark in September off the coast of Encinitas, just south.Keane Hayes was attacked while lobster diving at Beacon's Beach. Hayes suffered serious injuries to his upper body, but is expected to make a full recovery. 1065

  

On the campus of Howard University, Vice-president-elect, and alumna, Kamala Harris is never too far from sight.“It's important to note that she was a political science student,” said Howard University political science professor Niambi Carter.Carter says Harris’ election as vice-president is casting a renewed spotlight on her alma mater and the role of more than 100 Historically Black Colleges and Universities in America.“Howard University has been around since 1867,” Carter said, going on to add, “It's not validation for us because we know the intellectual labor and what we contribute in these spaces, but I think the world is just sort of catching up to what many people already knew about HBCUs and why they're so special and so significant.”It’s a similar story about 20 miles northeast of Howard University at Bowie State University in Maryland, also an HBCU, and founded before the end of the Civil War.“We’re the oldest HBCU in the state of Maryland,” said Aminta Breaux, president of Bowie State University, who is also on the President’s Board of Advisors for HBCUs.Breaux said Vice-president-elect Kamala Harris’ HBCU education is a point of pride.“I'm just overjoyed to see my students so excited and full of joy and recognizing what this means in the history, not just in our HBCUs of this country, of all the individuals seeing her and thinking, ‘If she can do that, maybe I can, too,’” Breaux said.HBCU’s are located in Washington, D.C. and 19 states, mostly in the South and East. They make up just three percent of higher learning institutions across the country but account for about 20 percent of African American college graduates.“Our endowments across the board, in comparison to predominantly white institutions, pale in comparison,” Breaux said. “And so we need greater philanthropic support, private support, as well as federal and state support.”It comes as, over the years, the students attending HBCUs have become increasingly diverse, including at Howard University.“If you're thinking that this space is closed and it's only open to African-Americans, or people who are identified as Black, it is not,” Howard’s Professor Carter said. “It is a space that is open for all.”It is a historic space attracting new attention in the present. 2280

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