天津武清区龙济男怎么样龙济男科刘大夫,武清龙济医院秘尿男科,天津市武清区龙济医院男科周末出诊吗,天津天津武清龙济泌尿医院,天津市龙济医院泌尿外科男科医院在哪里,武清男科医院天津市武清区龙济男科,天津龙济男科感染科教授

According to a recent paper, the Earth is caught directly in the crosshairs of a cosmic hurricane.A swarm of nearly 100 stars, accompanied by an even greater amount of dark matter, is aimed directly at our stellar neighborhood and there's nothing we can do to stop it; in fact, the vanguard is already upon us. This sounds like a perfect summer blockbuster movie, starring The Rock and Chris Pratt, or maybe Scarlett Johansson and Charlize Theron.Except this is for real. But is it a danger? Well, actually, no. Not at all. But it's potentially incredibly fascinating, with lots of interesting scientific interconnections. So, what is really going on?The story starts last April, when the Gaia satellite announced the locations and trajectories of 2 billion stars in the vicinity of the Milky Way surrounding our sun. They released the data to the public.Scientists were then able to look at the data set to see if they could spot anything peculiar. In galaxies like the Milky Way, the most common behavior is that the stars orbit the center of the galaxy in a manner broadly similar to the planets orbiting our sun. However, there are some stars that exhibit unusual motion. About a year ago, astronomers identified some "stellar streams" passing through our celestial neighborhood.One of them, called S1 (for stream 1), consists of nearly 100 stars of similar age and composition, orbiting the Milky Way in a direction exactly opposite that of normal stars. It's kind of like a handful of cars driving the wrong way down the highway, except with a much greater distance between them and with no likelihood of a collision. These stars are spread out over a few thousand light years and they will pass through the solar system's neighborhood over the course of a few million years.Astronomers identified S1 as being part of the remnants of a dwarf galaxy that collided with the Milky Way and was consumed in an epic episode of cosmic cannibalism. Dwarf galaxies are very small, typically about 1% the mass of the Milky Way. They can orbit larger galaxies and collide with the bigger galaxy, adding their mass to the parent. This is what appears to have happened in the case of S1, although the process has taken probably a billion years.Dwarf galaxies often have a disproportionately large fraction of dark matter. Dark matter is a hypothetical and still-undiscovered form of matter that interacts only gravitationally. Scientists have proposed its existence to explain many astronomical mysteries, for example the observation that most galaxies rotate faster than can be explained by the known laws of physics and the stars and gas of which they are composed.While dark matter has not yet been observed, hypothesizing its existence is the simplest and most economical explanation for myriad astronomical mysteries. Averaged over the entire universe, dark matter is thought to be five times more prevalent than the ordinary mass of stars and gas and planets.In dwarf galaxies, the fraction of dark matter is often higher. In Fornax, a well-studied dwarf galaxy orbiting the Milky Way, researchers estimate that the dark matter is between 10 and 100 times greater than the mass found in its stars.If that number holds for S1, the dark matter of the S1 stream is passing through the Earth at a much higher velocity than the more ordinary dark matter that orbits the Milky Way -- about twice as fast. It is thought that S1 dark matter is flying through the solar system at a speed of about 550 km/s, or about 1.2 million mph. While these numbers are impressive, they are misleading. Dark matter, if it exists, is extremely diffuse and it will have no discernible effect on the solar system.Because dark matter hasn't been observed yet, these velocity numbers are speculative, although they are strongly supported by a very large body of evidence. However, the prospect of high velocity dark matter flying through the Earth has suggested an opportunity to detect it.In a paper in the prestigious journal Physical Review D, researcher Ciaran O'Hare and his collaborators calculated the possibilities of discovering dark matter using both existing and proposed dark matter detectors. They considered two varieties of dark matter particles: a very heavy kind called a WIMP (weakly interacting massive particle) and a very light kind called an axion. Because the ultimate nature of dark matter is not known, it is important to be open to all possibilities.They found that the detectors they evaluated could find WIMPs for certain ranges of the particle mass. However, when they looked at the axion possibility, it appeared the prospects were even better. Because of its light mass and the manner in which an axion would interact with the detector, the apparatus simply has a better chance of seeing the axion. (If axions exist, of course.)Experiments with names like ADMX, MADMAX and ABRACADABRA are able or will be able to search for the signatures of dark matter proposed in the recent paper. They consist of technologies that are designed to interact with axions in a strong magnetic field and convert them to ordinary microwaves or radio waves that can be easily detected.It's important to remember that the S1 stream poses no credible threat to the Earth and humanity. There is no need for an action hero to save us. However, the synergy of science is staggering. A careful catalog of nearby stars has opened the prospect of a better possibility of finding and identifying dark matter, which is one of the great unanswered mysteries of modern physics. It's an amazing time we live in, in which we can study such things.\ 5625

Almost immediately, Kate was hooked. She'd seen advertisements for the hit Netflix series "13 Reasons Why" and heard that some friends were watching it, so she gave it a try."Within one or two episodes, I was completely hooked and was super into it and felt really emotionally involved in it," she said."And, so I, essentially, sped through the whole show ... which is not easy to do when you are working and also going to school. But I ended up doing it." 464

Actor Mark Wahlberg said on Tuesday that he would consider buying a professional soccer team in Ohio whose current owner is attempting to relocate the team to Texas. The Columbus Crew SC is planning to move to Austin, Texas after its owner, Anthony Precourt, successfully lobbied Austin City Council on Wednesday for a land deal with the city. But a lawsuit in Ohio could complicate Precourt's move, and potentially could force Precourt to sell the franchise to an owner who intends to keep the team in Ohio.A law was hatched two decades ago after Art Modell infamously moved the Cleveland Browns to Baltimore. Ohio has a law that stipulates teams that receive local or state government support must give an opportunity to sell the team to local owners before relocating. One caveat is the law has never been tested, and would likely go through extensive appeals if successful. While Wahlberg is not from Ohio, he recently purchased a Chevrolet dealership in Columbus, which gained a few laughs on CBS' "Late Show with Stephen Colbert" on Tuesday.Before opting to buy the Crew SC, Wahlberg said he would need to consult his friend Robert Kraft, who owns the New England Revolution of the MLS. Kraft is also the owner of the NFL's New England Patriots. “If I needed any advice about MLS and about owning a soccer team and where the league is heading, I would certainly pick nobody’s brain more than Robert Kraft,” Wahlberg told WHDH-TV. On Monday, Wahlberg was in Columbus at his new dealership and was asked by a reporter from WSYX-TV if he would have any interest in purchasing the soccer team. “Actually, you know what, I certainly would," Wahlberg told WSYX. "My dear friend Bob Kraft has not only (owns) the Patriots, but he owns the New England Revolution as well. I have a bunch of people who are involved. I think that may be something we need to discuss. I became a huge, huge soccer fan. This World Cup really got me.”According to ESPN, when asked about Wahlberg's interest in the Crew SC, the league downplayed his overtures. The MLS is a co-defendant with Precourt in the State of Ohio's lawsuit. In 2013, Forbes reported that Precourt purchased the Crew SC for million. The price tag for an MLS franchise is likely considerably higher as the expansion fee in the league has been reported to be as high as 0 million. Crew SC's home pitch MAPFRE Stadium was the first built specifically for MLS play, and has since been an important stop for the US Men's National Team. The team has played its quadrennial home World Cup qualifier against Mexico in the stadium every time since the stadium opened in 1999. 2695

America, I’m honored that you have chosen me to lead our great country.The work ahead of us will be hard, but I promise you this: I will be a President for all Americans — whether you voted for me or not.I will keep the faith that you have placed in me. pic.twitter.com/moA9qhmjn8— Joe Biden (@JoeBiden) November 7, 2020 328

America has an opioid problem and more mothers are struggling with sobriety.“At the height of my addiction, I could take anywhere from 20 or 30 Percocets a day if I had them,” said Amanda Martin, who’s opioid addiction started shortly after the death of a child.“My third born son died shortly after he was born and that just made a huge impact on me,” Martin said.During her fourth and fifth pregnancies, Martin, a former nurse, started taking pain pills which she says impacted her other children’s health.“They both had delayed speech patterns,” she said. “My youngest son that I took the most opiates with, he did have some developmental delays.”Martin’s opioid addiction eventually led to heroin use and ultimately put her in jail.New research shows during the past two decades, four times as many pregnant women are struggling with opioid use disorder and almost eight times as many infants are diagnosed with opioid withdrawal.Now, health experts say that many are having a hard time getting proper treatment.“Hospitals are providing variable care,” said Stephen Patrick, MD, director of the Vanderbilt Center for Child Health Policy. "And we see systems in communities really stretched, everything from local community hospitals to the child welfare system."He says every 15 minutes in America, an infant is born having an opioid withdrawal, which accounts for half a billion dollars in healthcare expenditures nationwide.“This year it looks like we’re on record pace once again to have to have a record-number of opioid overdoses,” Patrick said.While the COVID-19 crisis has made it harder for pregnant women to get into treatment, Patrick says this is a fixable problem, but that America currently lacks to funding and political will to change it.“As we start to usher in a new administration, I really hope the unique needs of pregnant women and infants affected by the opioid crisis are front and center,” he said.More help is something Martin agrees with, especially during the COVID crisis.“We see a lot of people coming in that are relapsing just simply because of the pandemic,” said Martin.Now three-and-a-half years sober, Martin is working as a recovery coach for Vertava Health in Mississippi and encouraging pregnant moms battling opioid addiction to get help, no matter how hard it may be.“There’s help out there,” she said. “And there’s non-judgmental places that you can come and you can get your whole life together and never have to live that way.” 2482