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成都腿部血管炎好的治疗医院
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发布时间: 2025-06-05 02:19:40北京青年报社官方账号
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  成都腿部血管炎好的治疗医院   

SAN FRANCISCO, Nov. 14 (Xinhua) -- Apple on Monday released a new version of its media player program iTunes, adding the much- anticipated scan-and-match service for music iTunes Match.The feature, included in iTunes 10.5.1, can scan a user's library to find music and match the content to the music available in iTunes Store. If it finds a match, users don't need to upload the music and can listen to them anywhere, even better-quality versions, on any devices running Apple's iOS operating system. Music that doesn't match is automatically uploaded.With a subscription fee of 24.99 U.S. dollars a year, users can store up to 25,000 of their own songs in Apple's cloud server. The iTunes Match is currently only available in the United States.Subscriptions for iTunes Match are unavailable for a while Monday morning due to excessive demand.The iTunes Match was first introduced in June along with Apple' s iCloud platform, the company's cloud service enabling users to sync their files, apps and content among Apple devices.Unlike Google and Amazon, Apple got the official blessings from all four major music labels, making the company only need to keep one copy of each song in its cloud server, eliminating the uploading work for users and redundancies for servers.When Apple's late co-founder Steve Jobs introduced the feature in his last keynote address in June, he touted the feature as "an industry leading effort," saying that the 24.99-dollar price is cheaper than Amazon's offering and Google has not announced a price yet.The release is also ahead of Google's latest music push. In an email invitation sent out last Friday, the search giant said it will hold an event called "These Go To Eleven" on Wednesday in Los Angeles. Tech news website The Verge reported that it will be the debut of the company's cloud music service Google Music.

  成都腿部血管炎好的治疗医院   

SHIJIAZHUANG, Oct. 16 (Xinhua) -- Chinese archaeologists said Sunday that they have found evidence of the cultivation of glutinous millet in the northern province of Hebei that could date back to 10,000 years, the earliest evidence of people growing the crop in the world.Lab results showed that remains of glutinous millet found at archaeological sites in Cishan Village in the city of Wu'an were harvested during the Neolithic Era between 8,700 to 10,000 years ago, scientists with the Institute of Geology and Geophysics of China Academy of Sciences (IGGCAS) said at a cultural festival held in Wu'an on Sunday.This means Cishan was the birthplace of the crop, archaeologists said.They have also found remains of foxtail millet in the pits, which could date back to between 8,700 and 7,500 years. This would be the earliest evidence of the crop's cultivation, which means that Cishan was the birthplace of foxtail millet, too, said Lu Houyuan, an IGGCAS scientist.Cultivating small-seeded dry crops was more prevalent than cultivating rice in prehistoric times, especially in China's semi-arid northern regions, Lu said.A total of 50,000 kilograms of grains have been stored in 88 pits for thousands of years at the Cishan Site, a Neolithic site discovered in 1972.In addition to grain remnants, pottery, stone tools, animal bones and bone artifacts have also been excavated from the site, which archaeologists believe will help their research in the emergence of agriculture in China.

  成都腿部血管炎好的治疗医院   

WASHINGTON, Jan. 1 (Xinhua) -- Twin U.S. spacecraft to study the moon from crust to core put themselves into the lunar orbit on New Year's Eve and New Year's Day, the country's space agency said.The second Gravity Recovery And Interior Laboratory, or GRAIL-B, reached its lunar orbit at 5:43 p.m. EST (2243 GMT) on Sunday, according to the National Aeronautics and Space Administration (NASA).The GRAIL-A started orbiting the moon at 5 p.m. (2200 GMT) Saturday.The insertion maneuvers placed the spacecraft into a near-polar, elliptical orbit with an orbital period of approximately 11.5 hours, NASA said.Over the coming weeks, the GRAIL team will execute a series of burns with each spacecraft to reduce their orbital period to just under two hours. At the start of the science phase in March 2012, the twin GRAILs will be in a near-polar, near-circular orbit with an altitude of about 55 km."NASA greets the new year with a new mission of exploration," Administrator Charles Bolden said in a statement. "The twin GRAIL spacecraft will vastly expand our knowledge of our moon and the evolution of our own planet."During GRAIL's science mission, the two probes will transmit radio signals precisely defining the distance between them. As they fly over areas of greater and lesser gravity caused by visible features such as mountains, craters and masses hidden beneath the lunar surface, the distance between the twin spacecraft will change slightly.Scientists will translate this information into a high-resolution map of the moon's gravitational field.The data will allow scientists to understand what goes on below the lunar surface and increase knowledge of how Earth and its rocky neighbors in the inner solar system developed into the diverse worlds we see today.

  

BEIJING, Jan. 6 (Xinhua) -- Beijing will offer residents 20,000 rental bikes this year to ease the city's notorious traffic jams, according to authorities with the Beijing Municipal Commission of Development and Reform.Five hundred rental kiosks will be set up around the city to offer residents over 20,000 rental bikes, the commission said.Beijing has also proposed creating new bike lanes in some areas, including main streets, historical and cultural conservation areas and some major business districts, from 2011 to 2015, according to the commission.The capital city currently has about 5 million vehicles on its roads, leading to serious traffic congestion that frustrates the city's residents on a daily basis."A lack of bike lanes is the reason why I refuse to ride a bike. Bikes and vehicles are using the same lanes, and that frightens me and makes me feel unsafe," said Beijing resident Song Tao.People often park cars on the city's existing bike lanes, pushing cyclists onto the vehicles' lanes, said Song.To ease traffic congestion, Beijing has made various efforts to encourage people to opt for modes of public transportation.On Dec. 31, Beijing opened three new subway lines, bringing the number of subway lines in Beijing to 15, with a total length of 372 kilometers, said Beijing Metro Spokesman Jia Peng.Beijing will open four more subway lines in 2012, according to information released at a rail transit construction mobilization conference.Amid other measures to ease traffic in 2011, city authorities decided to allow only 240,000 vehicles to be registered annually, slashing the new car registrations by two-thirds from the 2010 level.Meanwhile, vehicles are banned from roads one day each week according to license plate numbers.

  

BEIJING, Oct. 2 (Xinhua) -- Chinese archeologists have found evidence indicating that the mysterious ancient city of Loulan (Kroraina) once had highly-developed agricultural systems.Scientists from the Institute of Geology and Geophysics under the Chinese Academy of Sciences conducted remote sensing procedures, field investigations and sample testing in the area and found that there were once large tracts of farmlands in Loulan.The farmland featured regular and straight circumferences stretching for 200 to 1,000 meters as well as irrigation ditches running throughout, said Qin Xiaoguang, a member of the research team.Moreover, researchers found grain particles in the area's ground surface, which are very likely to be remains of crop plants, Qin said.These findings show that irrigation farming had been practiced in Loulan for at least 100 years, Qin said.Qin said they also found canal remains measuring 10 to 20 meters wide and 1.6 meters deep in the Loulan relics, indicating that the city, which is suspected of perishing in drought, was once rich in water resources.The ancient city was a pivotal stop along the famous Silk Road, but mysteriously disappeared around the third century AD.Previous historical records suggested that Loulan's economy was sustained by widespread agricultural activity, but no remains or other evidence had been found before the most recent discoveries.

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