中山扩肛出血中山为什么大便经常出血,中山权威脱肛医院排名,中山肛裂和痔疮区别,中山激光治疗痔疮多少钱,中山哪家医院痔疮技术好,中山做痔疮手术疼吗,中山华都肛肠医院属什么医院.

Beyond the beaches of the world, lies the potential for oceans of energy."I'm very excited about this because it's a very renewable energy-based technology,” said Professor Bruce Logan of Penn State University.Logan and university researchers recently created a device that removes salt from seawater in a cheaper way, allowing that water to then be used to create a renewable form of hydrogen fuel.“There's a lot of interest in renewable hydrogen,” Logan said. “Most of the hydrogen made today is made from fossil fuels, and so, we're interested in making that hydrogen from water.”That involves splitting water molecules into oxygen and hydrogen. The problem? Seawater also has salt, which needs to be removed first and that’s expensive to do.However, the “seawater electrolyzer” that Logan and his team worked on takes care of that issue cheaply by using a special membrane and without requiring expensive desalination plants. The findings were recently published in the Journal of Energy and Environmental Science.“Hydrogen is a great fuel,” he said. “It's been examined as a fuel for many decades now.”About 97 percent of all the water on earth is in the ocean, which means if it could be used efficiently to make hydrogen fuel, it could be a game-changer.“As we look to de-carbonize our fossil fuel infrastructure, we also can use it primarily for heavy-duty vehicles,” Logan said. “Airbus is looking to actually make airplanes that fly on hydrogen.”For now, though, their device would need to be scaled-up to a much larger version.“There are many nations and companies and nations across the world looking to do this. One of the biggest proposed hydrogen plants is in Saudi Arabia -- billion,” Logan said. “I would hope to convince them that it might be cheaper and better to use seawater directly, you know, in a system like this.”It’s a possibility that might one day create a bridge between our energy needs on land and the power in the sea. 1962

Before the family gathers for a holiday meal, here's all the food you should purge from your pantry. Read on to see some of the things you may need to throw away and updates on recalls for beef and romaine lettuce. 222

BETHESDA, Md. (AP) — President Trump was administered supplemental oxygen at the White House before going to hospital, a source tells the Associated PressA source also told the Associated Press that Trump began exhibiting 'clinical indications' of COVID-19 on Thursday afternoon, earlier than known.The news was reported in the hours after Trump’s physician said at a news conference that the President is doing “very well.”Navy Commander Dr. Sean Conley said Trump has been fever-free for 24 hours as he updates the nation on the president's condition from the hospital Saturday morning.Trump was admitted Friday after testing positive for the coronavirus. 665

BROOKLYN, N.Y. -- A Brooklyn karaoke bar with over 280 people inside was shut down over COVID-19 violations early Sunday, according to the New York City Sheriff's Office.Authorities shut down Legend KTV karaoke bar in Borough Park around 2 a.m.About 281 people were inside the location, which exceeded Department of Building occupancy and had a vacate order from 2018, the NYC sheriff said.The location’s liquor license was also revoked in 2019.The venue had windowless, private party rooms with 25 to 30 people inside, according to a law enforcement source.Inside one of the rooms was a young child who was running back and forth between tables, according to the source.While 281 people were inside, authorities believe there were likely more people as about 40 dispersed when the sheriff’s office arrived, the source said.At least six people were arrested for offenses, including child endangerment, authorities said.This story was originally published by Cristian Benavides and Kristine Garcia at WPIX. 1013

Beginning in late October, Marriott International Inc., says they will lay off over 600 employees at its headquarters in Bethesda, Maryland.In an email to E.W. Scripps, a spokesman for the hotel chain said 673 employees would be laid off.The spokesman added that employees that were furloughed would be back at the end of September.In 2018, Marriott began construction on its new headquarters and hoped to relocate by early 2022, the company said in a press release.The company currently has over 3,500 employees working at its headquarters.According to the Baltimore Sun, the old building will be turned into a senior living center after Erickson Living bought it. 673