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BEIJING, March 5 (Xinhua) -- China's retailers will offer refund to recent buyers of iPad 1 as price dropped with the debut of iPad 2.Apple released the upgraded version of the tablet on March 3 and announced to lower the price tags of the first generation iPad 1 by up to 27.6 percent. Buyers of iPad 1 within the last two weeks are eligible for a price difference compensation, according to Apple.Chinese customers who bought the product via Apple China online or its chain stores will also be compensated, according to a statement on Apple's website.Chinese electronics retailers such as Suning and Gome responded quickly to the price cut, promising to pay back their customers with a refund.Suning, China's biggest electronics retailer by market value, said iPad 1 buyers who bought the product from Feb 17 to March 2 can get the refund with the receipt starting Saturday.Gome, the second largest electronics retailer in China, also announced to pay back their customers who bought the product from Feb 18 to March 3 from their stores. Customers could apply for the refund with the receipt starting Sunday.

WASHINGTON, April 5 (Xinhua) -- NASA and co-researchers from the United States, the Republic of Korea and Japan have found a new mineral named "Wassonite" in one of the most historically significant meteorites recovered in Antarctica in December 1969, the U.S. space agency said on Tuesday in a statement.The new mineral was discovered within the meteorite officially designated Yamato 691 enstatite chondrite. The meteorite likely may have originated from an asteroid orbiting between Mars and Jupiter. Wassonite is among the tiniest, yet most important, minerals identified in the 4.5-billion-year-old sample.The research team, headed by NASA space scientist Keiko Nakamura-Messenger, added the mineral to the list of 4,500 officially approved by the International Mineralogical Association."Wassonite is a mineral formed from only two elements, sulfur and titanium, yet it possesses a unique crystal structure that has not been previously observed in nature," said Nakamura-Messenger.In 1969, members of the Japanese Antarctic Research Expedition discovered nine meteorites on the blue ice field of the Yamato Mountains in Antarctica. This was the first significant recovery of Antarctic meteorites and represented samples of several different types.As a result, the United States and Japan conducted systematic follow-up searches for meteorites in Antarctica that recovered more than 40,000 specimens, including extremely rare Martian and lunar meteorites.Researchers found Wassonite surrounded by additional unknown minerals that are being investigated. The mineral is less than one-hundredth the width of a human hair or 50x450 nanometers. It would have been impossible to discover without NASA's transmission electron microscope, which is capable of isolating the Wassonite grains and determining their chemical composition and atomic structure."More secrets of the universe can be revealed from these specimens using 21st century nano-technology," said Nakamura- Messenger.The new mineral's name was approved by the International Mineralogical Association. It honors John T. Wasson, professor at the University of California, Los Angeles. Wasson is known for his achievements across a broad swath of meteorite and impact research, including the use of neutron activation data to classify meteorites and to formulate models for the chemical makeup of bulk chondrites.

WASHINGTON, May 11 (Xinhua) -- NASA's Dawn spacecraft has obtained its first image of the giant asteroid Vesta, which will help fine-tune navigation during its approach, the U.S. space agency announced Wednesday.Dawn expects to achieve orbit around Vesta on July 16, when the asteroid is about 117 million miles from Earth.The image from Dawn's framing cameras was taken on May 3 when the spacecraft began its approach and was approximately 752,000 miles (1.21 million km) from Vesta. The asteroid appears as a small, bright pearl against a background of stars. Vesta also is known as a protoplanet, because it is a large body that almost formed into a planet."After plying the seas of space for more than a billion miles, the Dawn team finally spotted its target," said Carol Raymond, Dawn's deputy principal investigator at NASA's Jet Propulsion Laboratory in Pasadena, California. "This first image hints of detailed portraits to come from Dawn's upcoming visit."Vesta is 330 miles (530 km) in diameter and the second most massive object in the asteroid belt. Ground- and space-based telescopes obtained images of the bright orb for about two centuries, but with little surface detail.Mission managers expect Vesta's gravity to capture Dawn in orbit on July 16. To enter orbit, Dawn must match the asteroid's path around the sun, which requires very precise knowledge of the body's location and speed. By analyzing where Vesta appears relative to stars in framing camera images, navigators will pin down its location and enable engineers to refine the spacecraft's trajectory.Dawn will start collecting science data in early August at an altitude of approximately 1,700 miles (2,700 km) above the asteroid's surface. As the spacecraft gets closer, it will snap multi-angle images allowing scientists to produce topographic maps. Dawn will later orbit at approximately 120 miles (200 km) to perform other measurements and obtain closer shots of parts of the surface. Dawn will remain in orbit around Vesta for one year. After another long cruise phase, Dawn will arrive in 2015 at its second destination, Ceres, an even more massive body in the asteroid belt.Gathering information about these two icons of the asteroid belt will help scientists unlock the secrets of our solar system's early history. The mission will compare and contrast the two giant asteroids shaped by different forces. Dawn's science instruments will measure surface composition, topography and texture. Dawn also will measure the tug of gravity from Vesta and Ceres to learn more about their internal structures. The spacecraft's full odyssey will take it on a 3-billion-mile (5-billion-km) journey, which began with its launch in September 2007.

VIENNA, March 18 (Xinhua) -- The 26th Annual Congress of the European Association of Urology (2011 EAU congress) kicked off on Friday at the Vienna Austria Center in the Austrian capital Vienna.About 14,000 doctors, experts, scholars and representatives of pharmaceutical enterprises in the field of urology from more than 80 countries took part in the event, which will last till Tuesday.The EAU congress is Europe's largest fair in the field of urology. This is the third time for Vienna to host the event.The EAU congress aims to review technical innovation and technological progress in the field of urology and related subspecialties, discuss new theories, new technologies and new diagnostic methods of urological clinical trials, optimize the risk management of urological disease, and enhance doctors' practical knowledge and skills by educational activities.It also provides an important platform for related pharmaceutical, medical equipments and medical consumables manufacturers to present their latest products and technologies, and creates the opportunity of face-to-face communication between suppliers and consumers.The highlights of this year's EAU congress include the discussion of state-of-the-art kidney imaging and the application of ultrasound, computerized tomography (CT-scan) and magnetic resonance imaging (MRI).Participants are also expected to give a timely overview on the role of imaging, focal therapy and kidney biopsy in the management and follow-up of small renal masses, as well as the use of imaging in the management of urinary incontinence and other pelvic urinary pathologies.Congress organizers said that more than 200 presentations and seminars are scheduled during the five-day meeting, with an estimated 400 speakers unveiling their latest findings.

来源：资阳报