济南男人性功能怎么做检查(济南勃起中途疲软怎么调理) (今日更新中)

WASHINGTON, April 4 (Xinhua) -- New research from the University of Pennsylvania School of Medicine has revealed an increased incidence of major adverse cardiac events (MACE), such as heart attack, stroke, and cardiovascular death, in patients with severe psoriasis. The study results were reported Monday at the annual American College of Cardiology meeting in New Orleans.Psoriasis is a common inflammatory skin disease, and if severe, has been demonstrated to be a risk factor for cardiovascular disease. However, the degree to which psoriasis is associated with MACE has not been defined.In a cohort study analyzing data from a general practice research database, Lead author Nehal Mehta, director of Inflammatory Risk in Penn's Preventive Cardiology program, and colleagues reviewed the case histories of over 3,600 patients with severe psoriasis and 14,300 controls. They found that patients with severe psoriasis have a 53 percent increased incidence of MACE compared to the general population. They also found that having a diagnosed case of severe psoriasis confers an additional ten-year risk of six percent on MACE.Previous work from Mehta and colleagues found that the risk of death from cardiovascular disease increased by 57 percent in patients with severe psoriasis. In addition, the relative risk of death from cardiovascular disease was even higher in younger patients, who were as young as age 40.The researchers conclude that this new estimate of increased ten-year MACE may warrant more aggressive strategies for treatment of cardiovascular risk factors in patients with psoriasis.

LOS ANGELES, May 2 (Xinhua) -- An asteroid will fly past Earth this fall at a close approach that will allow a close-up view of one of Earth's good-sized space rocks, NASA's Jet Propulsion Laboratory (JPL) announced on Monday."On November 8, asteroid 2005 YU55 will fly past Earth and at its closest approach point will be about 325,000 kilometers away," said Don Yeomans, manager of NASA's Near-Earth Object Program Office at the JPL in Pasadena, Los Angeles."This asteroid is about 400 meters wide -- the largest space rock we have identified that will come this close until 2028."Despite the relative proximity and size, "YU55 poses no threat of an Earth collision over, at the very least, the next 100 years, " Yeomans said in a press release."During its closest approach, its gravitational effect on the Earth will be so miniscule as to be immeasurable. It will not affect the tides or anything else.""While near-Earth objects of this size have flown within a lunar distance in the past, we did not have the foreknowledge and technology to take advantage of the opportunity," said Barbara Wilson, a scientist at JPL. "When it flies past, it should be a great opportunity for science instruments on the ground to get a good look.""The best resolution of the radar images was 7.5 meters per pixel," said JPL radar astronomer Lance Benner. "When 2005 YU55 returns this fall, we intend to image it at 4-meter resolution with our recently upgraded equipment at the Deep Space Network at Goldstone, California. Plus, the asteroid will be seven times closer. We're expecting some very detailed radar images."Asteroid 2005 YU55 was discovered in December 2005 by Robert McMillan, head of the NASA-funded Spacewatch Program at the University of Arizona, Tucson. The space rock has been in astronomers' crosshairs before.In April 2010, Mike Nolan and colleagues at the Arecibo Observatory in Puerto Rico generated some ghostly images of 2005 YU55 when the asteroid was about 2.3 million kilometers from Earth.

LOS ANGELES, March 18 (Xinhua) -- The moon will move closer to Earth than it has been in more than 18 years Saturday night, space. com reported on Friday.On Saturday afternoon at 3 p.m. Eastern Daylight Time (1900 MGT) , the "supermoon", as dubbed by some observers, will arrive at its closest point to the Earth in 2011: a distance of 221,565 miles ( 356,575 kilometers) away, and only 50 minutes earlier, the moon will officially be full, the report said.At its peak, the supermoon may appear 14 percent larger and 30 percent brighter than lesser full moons (when the moon is at its farthest from Earth), weather permitting, said the report.Yet to the casual observer, it may be hard to tell the difference, according to the report.Scientists say it is a fluke of orbital mechanics that brings the moon closer to Earth.The supermoon will not cause natural disasters, such as the Japan earthquake, NASA scientists say.In December 2008, there was a near-supermoon when the moon turned full four hours away from its perigee - the point in its orbit that is closest to Earth. But this month, the full moon and perigee are just under one hour apart, promising spectacular views, depending on local conditions, the report said.

SAN FRANCISCO, May 11 (Xinhua) -- Google on Wednesday introduced a series of notebook computers based on its Chrome operating system, stepping up its competition against Microsoft.Google unveiled the "Chromebook" at its annual developers conference in San Francisco, saying that the new devices, made by Acer and Samsung Electronics, will go on sale on June 15 in the United States and six European countries.Google said Chromebooks can boot in 8 seconds and its security system makes it require no virus protection. Applications, documents and setting will be stored in "the cloud," which enables users to have same experience after logging into another Chromebook. The system will get updated automatically with no update prompts.Acer's Chromebook will start at 349 U.S. dollars and Samsung's product will be priced at 429 dollars for its WiFi model and 499 dollars for 3G connectivity. The devices will be available online in the United States through Amazon.com and Best Buy's online store.Google on Wednesday also announced Chromebooks for Business and Education, a subscription service including Chromebooks and a cloud management console to remotely administer and manage users, devices applications and policies.Google said it will directly handle the business and education orders. The monthly fee will be 28 dollars per user for businesses and 20 dollars per user for educational customers.The Chrome operating system, announced in July 2009, is designed to work exclusively with web applications, with its work based on Google's Chrome web browser.On Wednesday's conference, Google said the Chrome web browser now has 160 million active users, compared to 70 million last May.

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