成都血管畸形手术如何治疗成都严重脉管炎如何治疗,成都脉管炎自我治疗方法,成都下肢静脉曲张手术一共价格,成都看静脉曲张需要多少钱,成都血管畸形手术,成都婴儿血管瘤手术哪家医院好,成都肝血管瘤手术哪家医院好

NATIONAL CITY, Calif. (KGTV) -- A National City road was drenched Sunday morning after police say a woman slammed into a fire hydrant, sending water spewing into the air. The crash happened on the 200 block of Palm Avenue around 3 a.m. According to police, the woman lost control of her car and crashed into the hydrant. She was later taken away in handcuffs, but it’s unclear at this time if drugs or alcohol played a role in the crash. 446

My official statement on the presidential election: pic.twitter.com/F6AoS8lfhG— Governor Phil Scott (@GovPhilScott) November 7, 2020 140

Monday morning, the CDC removed what it calls was a “draft version of proposed changes” to their website that seemed to indicate they were embracing mounting evidence that COVID-19 is airborne and is transmitted through tiny droplets that can linger in the air and spread farther than six feet.“A draft version of proposed changes to these recommendations was posted in error to the agency’s official website. CDC is currently updating its recommendations regarding airborne transmission of SARS-CoV-2 (the virus that causes COVID-19). Once this process has been completed, the update language will be posted,” the CDC website now reads.The website was changed over the weekend, according to multiple media reports, to reflect several updates to their guidance about how COVID-19 spreads and preventative measures to take.The “draft” changes included stating COVID-19 transmits through the air and warned about poorly ventilated situations, saying that is “thought to be the main way the virus spreads.”On the Centers for Disease Control and Prevention’s website about coronavirus, under how it spreads, they listed the main way as: “Through respiratory droplets or small particles, such as those in aerosols, produced when an infected person coughs, sneezes, sings, talks, or breathes. These particles can be inhaled into the nose, mouth, airways, and lungs and cause infection.”They also had updated the guidance that particles can remain in the air longer and travel farther than originally thought.“There is growing evidence that droplets and airborne particles can remain suspended in the air and be breathed in by others, and travel distances beyond 6 feet (for example, during choir practice, in restaurants, or in fitness classes). In general, indoor environments without good ventilation increase this risk,” the CDC website read over the weekend.The website has been changed back to their previous guidance which states COVID-19 is believed to be transferred through larger droplets through close contact, closer than six feet, with a person who coughs, sings, or otherwise expels these larger droplets carrying the virus.The updated draft passages and comments on smaller particles and ventilation appeared to embrace recent studies from the CDC.Including one released by the CDC earlier this month showing Americans with positive COVID-19 test results were twice as likely to eat at a restaurant or cafe than those who tested negative.“Reports of exposures in restaurants have been linked to air circulation. Direction, ventilation, and intensity of airflow might affect virus transmission, even if social distancing measures and mask use are implemented according to current guidance. Masks cannot be effectively worn while eating and drinking, whereas shopping and numerous other indoor activities do not preclude mask use,” that report stated.In the “draft” changes to the CDC website, they included a preventative measure about ventilation, stating “Airborne viruses, including COVID-19, are among the most contagious and easily spread.” That passage is no longer on the website.The draft changes on the air transmission of COVID-19 also came on the heels of the CDC’s director, Dr. Robert Redfield, saying masks could be even more helpful in combating the coronavirus than a vaccine. President Donald Trump said later Redfield was confused by the question and misspoke.The World Health Organization changed their guidance and noted the prevalence of air transmission, and those particles lingering in the air, earlier this summer in July. Hundreds of scientists encouraged the WHO to make the acknowledgement following research and studies. 3665

Neanderthals may not have been that different from us, after all.New evidence reveals that they created the world's oldest known cave paintings and even wore seashells as body ornaments. Both behaviors suggest that they thought symbolically and had an artistic sensibility like modern humans. Two studies published Thursday in the journal Science detail the latest findings."Undoubtedly it is showing that Neanderthals were thinking and behaving just like modern humans," Alistair Pike, co-author of the studies and professor of archaeological sciences at the University of Southampton, wrote in an email."We should no longer think of them as a different species, just humans in different places," he said.The new findings of symbolic thinking show that Neanderthals and modern humans were cognitively indistinguishable, the researchers said.Cave paintings and artifacts like painted seashells have long been regarded as the work of early modern humans, who were thought to have more advanced cognitive abilities than Neanderthals. Dating cave paintings can be a difficult process, and unreliable techniques never allowed for the possibility that these could be the work of Neanderthals.Until now, that is. A new technique called Uranium-Thorium dating is less destructive, is more accurate and can go back further in time than other methods. U-Th dating looks at the deposits of carbonate on top of the paint, which contain traces of uranium and thorium that indicate when those deposits formed. That allows the researchers to determine an age for what's under the deposits.The researchers applied this technique to paintings in the La Pasiega, Maltravieso and Ardales caves in Spain, which had never received "robust" dating. The paintings include red and black images of animals, dots, lines, disks and other geometric signs. There also are engravings, hand prints and hand stencils.Those hand stencils are particularly significant, and not just because they represent the hand size of a Neanderthal."A red line, a red dot or even a positive hand print could potentially be made 'accidentally,' " wrote Dirk Hoffmann, lead author of the studies and archaeologist with the Max Planck Institute for Evolutionary Anthropology, in an email."Of course, I am sure that this is not the case, since you would still need to bring [in] light and pigment, but one could argue that all you need is some pigment on your hand when you lean against a wall. A hand stencil cannot be explained like that. You have to hold your hand against the wall and the deliberately spray pigment over this. This is why we emphasize the hand stencil."The dating revealed that the cave art was created more than 64,000 years ago -- 20,000 years before modern humans appeared in what is now considered Europe.The shells were found in the Cueva de los Aviones, a sea cave in southeastern Spain. They are unique because they are perforated with holes and colored with red and yellow pigment. Others served as containers for the mineral pigments themselves. The pigments were used on the shells but could have also been used for the cave paintings and even as body paint.The deposit layer containing the shells dated to 115,000 years ago, which is even older than other shells recovered in Africa that were dated to modern humans."The standard archaeological interpretation of such finds is that they are body ornaments," Hoffmann said. "Similar finds were made in Africa or the Levant with similar age. In Africa or the Levant, these were made by modern humans, in Spain Neanderthals made them. So in terms of symbolism, early modern humans and Neanderthals were similar."The researchers are absolutely confident in their dating technique."We have spent 10 years refining the technique and have numerous quality controls," Pike said. "The dates respect the growth axis of the deposits we are dating, the oldest closest to the painting, the youngest at the surface."Once modern humans left Africa and migrated to Europe and other areas, mixing with the Neanderthals would've been inevitable. The researchers believe that the Neanderthals created this artwork on their own, without being influenced by any other population. But it's possible that they exchanged symbolism or that Neanderthals influenced the art and symbolism of modern humans. Modern humans were capable of symbolic behavior, so it "turns the who's copying who debate on its head," Pike said."The idea that culture only evolved with modern humans no longer makes sense," Pike said. Hoffmann suggested that Neanderthals now be referred to as "very close cousins" of modern humans.Is it possible that anyone else may have created the cave paintings?Pike said it is incredibly doubtful that a population of early modern humans migrated to Europe so early without any other evidence to suggest it."We cannot of course rule out that pre-Neanderthal populations made the art," Pike said. "This sounds like a project for the future."Hoffmann, Pike and their colleagues want to use their new dating technique in more caves in Spain, as well as France and Italy -- and anywhere else Neanderthals are known to lived.The findings also raise new questions for researchers."How far back does symbolic behavior go? Can it be traced to the last common ancestor of modern humans and Neanderthals? This is perhaps where we should be looking," Pike said. 5398

NASA’s headquarters in Washington, D.C. will be named after the first Black female engineer at the agency, Mary W. Jackson.“Mary W. Jackson was part of a group of very important women who helped NASA succeed in getting American astronauts into space. Mary never accepted the status quo, she helped break barriers and open opportunities for African Americans and women in the field of engineering and technology,” said NASA Administrator Jim Bridenstine.Bridenstine pointed out that NASA’s headquarters sits on Hidden Figures Way, which was re-named in 2019 with a bill from congress. Jackson, along with Katherine Johnson, Dorothy Vaughan, and Christine Darden, and their work in the West Area Computing Unit, were profiled in the 2016 book and subsequent movie ‘Hidden Figures.’Jackson graduated in 1942 with a dual degree in math and physical sciences, and took a job as a math teacher at first. In 1951, Jackson was recruited by the National Advisory Committee for Aeronautics, which in 1958 was succeeded by NASA. She was known as one of the ‘human computers’ at Langley. 1083