济南癫痫哪几家(滨州哪里治疗癫痫病专业) (今日更新中)

SAN FRANCISCO, June 15 (Xinhua) -- Facebook has hired Joe Lockhart, who was former U.S. President Bill Clinton's press secretary during the last two years of his second term, as the social network company's vice president of global communications, U.S. media reported on Wednesday.Lockhart, 51, will report to Elliot Schrage, Facebook's current vice president of global communications, marketing and public policy, The Wall Street Journal said in a report."His experience building and running a press office at the White House gives him particular appreciation for the demands of a global 24-hour news cycle and the challenges of responding effectively to intense scrutiny," Schrage said of Lockhart's arrival.Lockhart will start at Facebook on July 15 and will move from Washington D.C. to Facebook's headquarters in California.Lockhart is the latest Washington insider to join Facebook as the world's largest social networking site is facing intense scrutiny for its privacy practices and growing global presence, The Wall Street Journal pointed out.Last year, Facebook also hired White House economic adviser Marne Levine to serve as its vice president of global public policy.More recently, Facebook hired former Bush administration officials Joel Kaplan as its vice president for U.S. public policy, and Myriah Jordan, who will become a policy manager focusing on congressional relations.

WASHINGTON, Aug. 17 (Xinhua) -- Latest research shows that the Moon could be younger than previous estimates. The findings were published online Wednesday in the Nature journal.The prevailing theory of the Moon's origin is that it was created by a giant impact between a large planet-like object and the proto-Earth. The energy of this impact was sufficiently high that the Moon formed from melted material that was ejected into space. As the Moon cooled, this magma solidified into different mineral components. Analysis of lunar rock samples thought to have been derived from the original magma has given scientists a new estimate of the Moon's age.According to this theory for lunar formation, a rock type called ferroan anorthosite, or FAN, is the oldest of the Moon's crustal rocks, but scientists have had difficulty dating FAN samples. The research team used newly refined techniques to determine the age of a sample of FAN from the lunar rock that was brought back to Earth by the Apollo 16 mission in 1972.The team analyzed the isotopes of the elements lead and neodymium to place the FAN sample's age at 4.36 billion years. This figure is significantly younger than earlier estimates of the Moon's age that range as old as the age of the solar system at 4. 568 billion years. The new, younger age obtained for the oldest lunar crust is similar to ages obtained for the oldest terrestrial minerals -- zircons from western Australia -- suggesting that the oldest crusts on both Earth and Moon formed at approximately the same time, and that this time dates from shortly after the giant impact.This study is the first in which a single sample of FAN yielded consistent ages from multiple isotope dating techniques. This result strongly suggests that these ages pinpoint the time at which the sample crystallized."The extraordinarily young age of this lunar sample either means that the Moon solidified significantly later than previous estimates, or that we need to change our entire understanding of the Moon's geochemical history," Carnegie Institute of Science's geochemist and study author Richard Carlson said.

LOS ANGELES, June 24 (Xinhua) -- Near-Earth asteroid 2011 MD will whip past Earth on June 27, but will not pose any threat, NASA's Jet Propulsion Laboratory (JPL) said on Friday.The asteroid will pass only 12,000 kilometers (7,500 miles) above the Earth's surface at about 9:30 EDT, according to JPL in Pasadena, Los Angeles.This small asteroid, only 5-20 meters in diameter, is in a very Earth-like orbit about the Sun, but an orbital analysis indicates there is no chance it will actually strike Earth on Monday, JPL said.If a rocky asteroid the size of 2011 MD were to enter Earth's atmosphere, it would be expected to burn up high in the atmosphere and cause no damage to Earth's surface, said JPL.The accompanying diagram gives a view of the asteroid's trajectory from the general direction of the Sun. This view indicates that 2011 MD will reach its closest Earth approach point in extreme southern latitudes (in fact over the southern Atlantic Ocean), according to JPL. The incoming trajectory leg passes several thousand kilometers outside the geosynchronous ring of satellites and the outgoing leg passes well inside the ring, JPL said.For a brief time, it may be bright enough to be seen even with a modest-sized telescope.One would expect an object of this size to come this close to Earth about every six years on average.The asteroid was discovered by the LINEAR near-Earth object discovery team observing from Socorro, New Mexico.

SAN FRANCISCO, July 21 (Xinhua) -- Microsoft Corp. on Thursday posted strong quarterly earnings in its fourth fiscal quarter, with profit and revenue beating expectations from Wall Street analysts.For the quarter ended June 30, the world's largest software maker reported a net income of 5.87 billion U.S. dollars, or 69 cents per share, representing increases of 30 percent and 35 percent respectively when compared with the year-ago period.Revenue for the quarter was 17.37 billion dollars, up by 8 percent from the same period a year earlier.Wall Street analysts had expected a profit of 58 cents per share on a revenue of 17.23 billion dollars, according to Thomson Reuters.For the whole fiscal year, Microsoft reported a record revenue of 69.94 billion dollars, a 12 percent increase from the prior fiscal year. Net income for the year was 23.15 billion dollars, accounting for an increase of 23 percent.Among its business sectors, Microsoft Business Division revenue grew 7 percent for the fourth quarter and 16 percent for the full year. Over 100 million licenses of office 2010 have been sold so far, said the company.Primarily driven by growth in search revenue, the company's on- line services division revenue grew 17 percent for the fourth quarter and 15 percent for the full year. U.S. search share of Microsoft's search engine Bing increased 340 basis points year- over-year.Microsoft said revenue of entertainment and devices division grew by 30 percent for the quarter and 45 percent for the year.However, Windows and Windows Live revenue declined by 1 percent for the fourth quarter and decreased by 2 percent for the full year. Microsoft said estimated full-year revenue growth for the Windows division was in line with the sluggish PC market growth.

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