宜宾现在开个眼角多少钱(宜宾注射玻尿酸隆鼻费用多少) (今日更新中)

WASHINGTON, Dec. 5 (Xinhua) -- NASA's Kepler mission has confirmed its first planet in the "habitable zone," a region where liquid water could exist on a planet's surface, the U.S. space agency announced on Monday.The newly-confirmed planet, Kepler-22b, is the smallest yet found to orbit in the middle of the habitable zone of a star similar to Sun. The planet is about 2.4 times the radius of Earth. Scientists don't yet know if Kepler-22b has a predominantly rocky, gaseous or liquid composition, but its discovery is a step closer to finding Earth-like planets.Previous research hinted at the existence of near-Earth-size planets in habitable zones, but clear confirmation proved elusive. Two other small planets orbiting stars smaller and cooler than Sun recently were confirmed on the very edges of the habitable zone, with orbits more closely resembling those of Venus and Mars.Kepler-22's star is a bit smaller than our sun, so its habitable zone is slightly closer in. The diagram shows an artist's rendering of the planet comfortably orbiting within the habitable zone, similar to where Earth circles the sun. Kepler-22b has a yearly orbit of 289 days. The planet is the smallest known to orbit in the middle of the habitable zone of a sun-like star. It's about 2.4 times the size of Earth."This is a major milestone on the road to finding Earth's twin, " said Douglas Hudgins, Kepler program scientist at the NASA Headquarters in Washington. "Kepler's results continue to demonstrate the importance of NASA's science missions, which aim to answer some of the biggest questions about our place in the universe."Kepler discovers planets and planet candidates by measuring dips in the brightness of more than 150,000 stars to search for planets that cross in front, or "transit," the stars. Kepler requires at least three transits to verify a signal as a planet."Fortune smiled upon us with the detection of this planet," said William Borucki, Kepler principal investigator at the NASA Ames Research Center who led the team that discovered Kepler-22b. "The first transit was captured just three days after we declared the spacecraft operationally ready. We witnessed the defining third transit over the 2010 holiday season."The Kepler science team uses ground-based telescopes and the Spitzer Space Telescope to review observations on planet candidates the spacecraft finds. The star field that Kepler observes in the constellations Cygnus and Lyra can only be seen from ground-based observatories in spring through early fall. The data from these other observations help determine which candidates can be validated as planets.Kepler-22b is located 600 light years away. While the planet is larger than Earth, its orbit of 290 days around a Sun-like star resembles that of Earth. The planet's host star belongs to the same class as Sun, called G-type, although it is slightly smaller and cooler.Of the 54 habitable-zone planet candidates reported in February 2011, Kepler-22b is the first to be confirmed. This finding will be published in The Astrophysical Journal.

SHIJIAZHUANG, Oct. 16 (Xinhua) -- Chickens began being domesticated in China about 8,000 years ago, far earlier than in the rest of the world,according to a recent study on fossils uncovered in north China's Hebei Province.Archaeologists said they had unearthed 116 fossil specimens from 23 types of animals, including pig, dog, chicken, tortoise, fish, and clam, at the Cishan Site, a Neolithic village relic in the city of Wu'an.Several bone fragments were identified to be from domesticated chickens, said Qiao Dengyun, head of the Handan Municipal Institute of Cultural Relics and Archaeology."The chicken bones found at Cishan are slightly larger than wild jungle fowls, but smaller than that of a modern domesticated chicken," said Qiao.Qiao said the bone fossils date back to 6,000 BC, earlier than the oldest domesticated chicken previously discovered in India that dated back 4,000 years."Most of the bones were from cocks, indicating that ancient residents used the practice of killing cocks for their meat and raising hens for their eggs," said Qiao.The Cishan Site, which dates back 10,000 years, was first discovered in the 1970s. At the site, experts have found remnants of China's oldest cultivated millet as well as walnut shells, a discovery that challenged the popular belief that walnuts had been brought to China from what is now Xinjiang Uygur Autonomous Region and Central Asia.

HARBIN, Jan. 5 (Xinhua) -- A launching ceremony for the 2012 Sino-Russia Tourism Year was held in northeast China's Heilongjiang province Thursday.The initiative, along with an accompanying initiative to be launched in Russia in 2013, will boost people-to-people exchanges and consolidate Sino-Russian relations, Russian President Dmitry Medvedev said in a statement on Dec. 31, 2011.The initiative is the third of its kind to take place between China and Russia, following Sino-Russia National Year and the Sino-Russia Year of Language held in 2006 and 2009, respectively.The creation of the 2012 Sino-Russia Tourism Year is a vital decision made by leaders of both countries to boost the China-Russia comprehensive strategic partnership of cooperation, said Shao Qiwei, director of China's National Tourism Administration.The tourism year will serve as a platform to display the abundant tourism resources of the two countries, said Grigory Sarishvili, deputy head of the Russia Federal Tourism Agency.Statistics from Russian tourism authorities showed that the number of Chinese tourists to Russia during the first nine months in 2011 saw a year-on-year increase of 52 percent.

SHIJIAZHUANG, Dec. 3 (Xinhua) -- More than 3.48 million people in rural areas of north China's Hebei Province have been given access to safe drinking water this year, a local official said Saturday.Authorities in the province have invested more than 1.7 billion yuan (270 million U.S. dollars) so far in 2011 in building drinking water infrastructure, said Liang Jianyi, deputy director of the Hebei Provincial Department of Water and Resources.More than 32 million rural people in Hebei, especially in mountainous and coastal areas, had long suffered from unsafe water, with problems including high fluorine and alkaline contents, Liang said.From 2005 to 2010, the provincial authorities put almost 6 billion yuan into providing safe drinking water for 13 million rural residents, he added.

LAS VEGAS, the United States, Jan. 12 (Xinhua) -- NVIDIA, the computer chip manufacturer best known for its high performance graphics processors, is looking to make further inroads with the automobile industry by integrating its new Tegra 3 mobile processors in upcoming vehicle models.At the 2012 International Consumer Electronics Show (CES), NVIDIA and Audi announced that all models from the German auto manufacturer in 2013 will use Tegra 3 quad-core processors to power their in-car digital systems.These processors, which are traditionally found in smartphones and tablets, will support the vehicle's digital systems at lower energy rates and also allow for shorter lead times in getting concepts to market.In addition to powering infotainment systems that allow for web browsing and Google Earth integrations, they will also give automakers the ability to replace traditional dashboards with instrument cluster systems, or digital dashboards."By leveraging technology from the very latest smartphones and tablets, Audi is leading the market with innovations that enhance safety and make driving more enjoyable," said Ricky Hudi, the company's chief executive engineer, at Audi's official conference at CES.For Audi, this means that they will be able to offer cars like the next-generation A3 model beginning in 2013, which features an integrated touchpad system and mounted monitor with the ability to render 3D imaging. Current 2012 Audi vehicles house the Tegra 2 processor."It's a natural progression with people getting so accustomed to mobile and expecting it from your automobiles as well. Partnering really closely with automotive OEMs enable us to help them realize the driver experience they're looking to deliver," said Phillip Hughes, NVIDIA's director of automotive sales and business development, in an interview with Xinhua.In addition to Audi, Tesla and Lamborghini will also be including the newest NVIDIA Tegra 3 processor in upcoming models. At this year's CES, Lamborghini is showcasing the Lamborghini Aventador, a nearly 700 horsepower vehicle with the capability of going from 0 to 60 miles per mile in less than five seconds."NVIDIA technology is enabling us to do more with our vehicles and gives our cars the ability to have the technology you'd expect from a car like this," said Kelly Snyder, an event manager with Lamborghini, to Xinhua. The retail price point for the Lamborghini Aventador starts at 382,000 U.S. dollars.More than just powering the car's digital experiences, however, integrating NVIDIA's processors will help the auto manufacturer build better cars by reducing the power to weight ratio that is a key consideration in manufacturing higher performing cars."By moving elements like the odometer to a digital dashboard platform, it reduces the power to weight ratio that is so critical to the design and manufacturing of automobiles like the Lamborghini," explained Snyder.NVIDIA also expects that the integration of these processors will bring the development cycle of the automotive industry up to speed with the consumer electronics industry through Virtual Computing Modules (VCMs) powered by the Tegra 3. These VCMs allow auto manufacturers to quickly prototype and ship consumer technology innovations to automobiles, reducing a development lifecycle that once took seven years, to roughly a year."At the end of the day, our goal is to help automotive OEMs bridge the gap between OEM and consumer technology," said Hughes.

来源：资阳报