济南阴囊边上瘙痒(济南前列腺可以切除吗) (今日更新中)

At 3 p.m. ET on Monday, November 26, a group of researchers will be really sweating. The NASA InSight spacecraft will try to land on Mars.After six months of flight, the lander component of the probe will detach itself from the cruise stage and head into the atmosphere. The lander component initially looks a fair bit like the re-entry capsule used in the 1960s and 1970s for the Apollo moon missions -- sort of conical, with a smooth and flat bottom. That bottom is a crucial heat shield that is designed to protect the probe as it passes through the thin Martian atmosphere.The landing is a devilishly difficult feat. The landing capsule has to batter its way through the atmosphere. It will fly through the Martian air at an initial speed of 12,300 mph, and it must hit the atmosphere at an angle of precisely 12 degrees. Any shallower, and the probe will bounce off into deep space. Any steeper, and the probe will burn itself up in a spectacular and fiery death. The probe will first touch the atmosphere six minutes and 45 seconds before landing. During this phase, it will experience acceleration 12 times that of the Earth's gravity. Were the probe a 150-pound human, during the flaming descent, it would weigh nearly a ton.About 3? minutes after the probe hits the atmosphere, a parachute will deploy, slowing down the probe even more. Fifteen seconds later, explosives will blow the heat shield off, exposing the actual InSight probe hidden inside. Ten seconds after the heat shield falls away, the probe will extend its legs, much like an airplane extends its wheels before touching down.The probe will fall for an additional two minutes attached to the parachute and protected by its conical shell. About 45 seconds before InSight lands, it will drop out of the shell and fall toward the surface. As soon as it leaves the shell, its landing rockets will ignite.The actual InSight probe looks a little bit like the Apollo moon lander, with three legs to support it and a boxy top. The rockets will slow it further and stop any remaining horizontal motion. Then, about 15 seconds before touchdown, the InSight probe will descend at a speed of 8 feet per second, before hopefully touching down gently on the Martian surface.The entire landing sequence will take about seven minutes to occur. A radio signal from Mars to Earth currently takes about eight minutes and seven seconds to get here. So the complete landing process will take place before we find out if it was successful. It will be done automatically, entirely by the probe itself. For the scientists and engineers who designed InSight, this is called "seven minutes of terror."And they are right to be worried. Mars is a graveyard of failed probes. There have been 44 attempts by various national space agencies to land on Mars. Eighteen have been successful. Twenty-three have not. Three have achieved orbit but failed at a landing.So, what does InSight hope to achieve? Well, as it happens, a lot. But it's different than the intrepid Curiosity probe, which NASA landed in 2012. InSight will not move around. Instead, it will stay put and tell us of the interior of Mars.One thing it will do is emit radio waves that we can monitor on Earth. By making careful measurements of how the frequency of the radio waves change, we will be able to measure the degree to which Mars wobbles as it rotates. That will tell us something about the core of the planet, specifically its makeup and information on the degree to which it is molten.InSight will also deploy a seismometer to listen for marsquakes (like earthquakes, but Martian-style) and for impacts of meteors on the planet. Information gleaned from the waves the seismometer detects will tell us more about the planet's interior.The third thing InSight will do is to dig below the planet's surface. Using a jackhammer, the probe will drill down 5 meters (16 feet) into the planet and, basically, it will take the planet's temperature.There are many reasons this is interesting. Taking the temperature at that depth will allow planetary scientists to determine how much heat is escaping from Mars. More broadly, this measurement will allow a clear determination of the temperature of the planet much closer to the core.This information will tell us a lot about how Mars formed, which, in turn, will add to the information of how rocky planets, including our own Earth, typically develop.And if you're more of an explorer kind of person and not so interested in Martian geology, it will also tell us how warm the planet is at modest depths, which will tell us if there is any chance of liquid water on the planet. Perhaps obviously, if the Martian subsurface is warm enough, any buried water will be in liquid form and not ice. Finding liquid water would be the key discovery that would make Martian exploration relatively easy. A relatively recent possible discovery of a buried Martian lake was promising, but the data was not conclusive. Knowing that the ground is warm would be very comforting to possible future explorers.Exploring the solar system is the first step toward exploring the stars. The InSight probe will give us --well -- insight into whether this is something that humanity will achieve in the foreseeable future.And maybe Elon Musk's bet on him getting to Mars will become true. 5329

ASHLAND, Ore. -- In the Rogue Valley of southern Oregon, you’ll find rows upon rows of vineyards. Rob Folin is the winemaker at Belle Fiore in Ashland.Although the grapes are different, the dry climate is similar to Napa Valley, making it very ideal conditions for wine-making. However, just like other crops, the weather can have a huge impact on wine grapes. As a winemaker, Folin says he needs to know what his vineyards are facing and how to handle what Mother Nature throws at him.“Rain, snow, frost, smoke, fire, we’ve got it all,” Folin said.In the summertime, it can be clear one day and smoky the next.“Right during harvest or right before is when it’s the worst time to have smoke – which would be right now,” Folin said.Harvest season in southern Oregon typically starts in mid-September and goes until mid-October. Folin says one of the stressors for a winemaker is smoke taint. That’s when smoke gets trapped in the skin of the grapes giving them a campfire aroma and ashy texture. It’s a flavor very few people enjoy.“If your vineyard had a fire right next to it and you just had solid smoke coming in there, then you can really have this barbecue or campfire kind of aroma,” Folin said.Unless you send your grapes in somewhere to get tested, Folin says there’s no way to know your grapes have smoke taint until they go through fermentation. He says whether a grape is impacted or not depends on a lot of factors, and it’s very unpredictable.“Our vineyard here could be totally fine, and the one across the street, their resulting wines could be smoky, like it’s just how the wind goes, the intensity of the smoke, how long it was there, how close it was, did it settle overnight.”When it comes down to it, there’s only so much you can control. As of right now, not much can be done to prevent smoke taint, and smoky summers in the western U.S. seems to be the norm lately.Folin says winemakers that face a lot of smoke taint can make more white wines since white wines are fermented without the grape skin. Or they can market their wines to consumers as a smoky wine for those that like the taste. At the end of the day, Folin says winemakers have to go with the flow.“Just roll with it," Folin said. "Ya know, fix what you can. If you can’t do anything about it, what can you do? Do what you can do and move forward.”With the exception of one fire near the vineyard in the past month, Folin says it’s been a very great year for his vineyard. He’s hopeful something good can come out of 2020 after all.“With all the stuff that’s going on, maybe we’ll have the best grapes this year. I don’t know. Just going to count on that.” 2649

As millions of Americans have been without work amid the pandemic, nearly 12 million people will lose unemployment benefits on December 26, according to the Century Foundation.The Century Foundation estimates that 7.3 million Americans will exhaust benefits from the Pandemic Unemployment Assistance program. The federal program extended unemployment benefits for millions of Americans who otherwise would not have received state unemployment benefits.According to the Century Foundation, 4.6 million Americans will lose benefits through the Pandemic Emergency Unemployment Compensation program on December 26. This fund extended state unemployment benefits for an additional 13 weeks. The 4.6 million Americans is in addition to the 3.5 million workers who will have lost PEUC benefits by then.“Congress has stared down major expirations of jobless benefits multiple times during the Great Recession and previous economic cycles,” the Century Foundation said. “Policy makers have been more comfortable with enacting temporary extended benefits programs with more predictable costs rather than improving the automatic stabilizers in (extended benefits) EB."While millions of Americans are set to lose benefits, there remains ongoing debate on Capitol Hill to provide some form of economic stimulus. There have been various proposals that would offer extended benefits, but the House, Senate and White House have struggled to find any sort of agreement.“With the stakes of the benefit cutoff perhaps higher than they have ever been before, there also seems to be a grave danger that unemployed Americans could be left behind during a lame duck session taking place in the overhang of a contested presidential election,” the Century Foundation said. “But the numbers—and families behind them—leave no excuses for inaction.” 1829

As the pandemic continues, homeless shelters are having to change their approach to meet the needs of families.At least one network of shelters is doing that by trying to prevent homelessness.Family Promise is the largest homeless shelter in the country. Last year, it helped 93,000 people.It provides aid to those who need housing by placing them with community partners within the interfaith community.The executive director in Arizona says the problem right now is these communities are shutting down in the pandemic.“The congregations in the last six months, five and half months, have gotten used to not hosting,” said Ted Taylor, Executive Director of Family Promise Arizona. “We have to get them back into the hosting mode because it is what makes our model work. So, the fear that is at congregations still remains. It is real and it is a very difficult start.”Family Promise says the average cost to rescue a family is ,000 and it takes as long as four months. For Family Promise, it costs ,000 and takes 43 days.While their new effort to prevent homelessness gets up and running, Family Promise says looming evictions require more community support than ever.So far, Family Promise has prevented 10 families from homelessness in Arizona. It hopes to reach 40 by the end of the year.Nationwide, the executive director says the effort to prevent homelessness could reduce the number of people needing a place to stay by 25%. 1445

As the Nation continues to mourn the passing of former President George H.W. Bush, many government offices will be closed Wednesday for a national day of mourning. The closure was announced by President Donald Trump. Trump signed an executive order to close the federal government "as a mark of respect for George Herbert Walker Bush, the forty-first President of the United States."See the list below for closures:  434

来源：资阳报