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BEIJING, April 14 (Xinhuanet) -- The discovery of a sharp-toothed dinosaur fossil in New Mexico, the United States, may bridge a gap in the evolution of the species, researchers said in Wednesday's journal Proceedings of the Royal Society B.Researchers from the Smithsonian Institution unearthed the dinosaur skull and neck vertebrae in Abiquiu, New Mexico, where it had remained buried for around 230 million years. The short snout and slanting front teeth of the find — Daemonosaurus chauliodus — had never before been seen in a Triassic era dinosaur, said Hans-Dieter Sues of the Smithsonian's National Museum of Natural History.Sues, curator of vertebrate paleontology at the museum, said the discovery helps fill the evolutionary gap between the dinosaurs that lived in what is now Argentina and Brazil about 230 million years ago and the later theropods like the famous Tyrannosaurus rex."Various features of the skull and neck in Daemonosaurus indicate that it was intermediate between the earliest known predatory dinosaurs from South America and more advanced theropod dinosaurs," said Sues."One such feature is the presence of cavities on some of the neck vertebrae related to the structure of the respiratory system," he added.The discovery suggests that there is still much to be learned about the early evolution of dinosaurs."The continued exploration of even well-studied regions like the American Southwest will still yield remarkable new fossil finds," Sues said.

SAN FRANCISCO, March 7 (Xinhua) -- The world's leading hard rive producer Western Digital Corp. on Monday announced that it has agreed to buy Hitachi Ltd.'s hard disk drive unit for about 4. 3 billion U.S. dollars, a move that will create a dominant player in the industry.Western Digital said that it plans to acquire Hitachi Global Storage Technologies, a wholly-owned subsidiary of Hitachi Ltd., in cash and stock.The proposed combination will result in a customer-focused storage company with the industry's broadest product lineup backed by a rich technology portfolio, Western Digital said.According to their agreement, the resulting company will retain the Western Digital name and remain headquartered in Irvine in the U.S. state of California.The transaction has been approved by the board of directors of each company and is expected to close during the third quarter of 2011.With the purchase, Western Digital will claim 49.6 percent share of global hard disk drive unit shipments based on latest quarterly statistics, compared to 29.4 percent for Seagate Technology LLC, the industry's No. 2 supplier, research firm iSuppli pointed out.The deal will give Western Digital a lead of 20.2 percentage points over Seagate, up from a mere 2 points without the acquisition, iSuppli said in a research note released Monday.The acquisition will also allow Western Digital to enter the critical enterprise hard disk drive segment, where it currently is only a marginal player.Analysts believed that the purchase might be a consequence of declining hard disk drive shipments, which are being impacted by the rising sales of tablet computers, which don't use hard disk drives and are cutting into the sales of mobile PCs, a major market for hard drives."Amid weaker industry conditions, organic sales growth is more difficult to achieve, prompting hard disk drive suppliers to engage in acquisitions to gain market share," iSuppli noted.

BEIJING, March 18 (Xinhuanet) --In February this year, Chinese National Geographic magazine published a series of exquisite pictures about Shicheng City (literally, Lion City), and since then, the public's strong interest in the city has been aroused again.The city of nearly 1,339 years of age, situated in east China's Zhejiang Province, has been submerged under Qiandao Lake since 1959 for the construction of the Xin'an River Hydropower Station.International archeologists vividly named the city submerged in water "time capsule." Since it is shielded from the erosion by wind, rain and sun, a city submerged in water comparatively maintains a stable condition, thus making the city a virtual time vessel. Seen from the pictures of Shicheng City, stairs in ancient houses, walls and memorial arches remain the same as they were thousands of years ago.Shicheng City was named after the Wu Shi Mountain (literally, Five Lion Mountain) in the northern part of Sui'an County, Zhejiang. It was once the center of politics, economics and culture of Sui'an County in that area.As written in the "History of Sui'an County," there are all together 265 arches submerged under Qiandao Lake, among which the Jie Xiao Memorial Arch's fine carvings remain well-preserved.According to the restored map of Shicheng, there were five city gates in all directions. You can find one city gate tower on each city gate and all together there are five towers. Besides, six streets in Shicheng City were used to connect every corner of the city as a whole. The typical roads in Shicheng City were stone roads, tidily paved by flagstone and pebbles.

BEIJING, May 24 (Xinhuanet) -- CT scan, a widely used heart-imaging test, is likely to result in the over treatment for patients with heart disease, according to a study published online by the Archives of Internal Medicine on Monday.CT, which produces a detailed image of the heart that reveals cholesterol buildups in the coronary arteries, is widely used in the hospital around the world."Testing might lead to more harm than good," said McEvoy, a doctor at Seoul National University Bundang Hospital in S. Korea.His team led the study, in which 2,000 healthy adults were divided into two groups. One thousand adults had CT scans and another half had standard tests, including routine checks of their blood pressure and cholesterol levels.After 18 months, the 215 people who had worrisome CT scans were advised to have additional tests and medical treatment, and some even advised to have surgery. But less than 10 percent in the group of standard test were reported to need medications.Therefore, physicians cannot easily ignore the diagnoses made by the new imaging techniques, McEvoy said, "We are left with the dilemma of what to do with the results,"According to McEvoy, doctors should focus on patients' lifestyle and traditional risk factors such as smoking and obesity.

BEIJING, May 16 (Xinhuanet) -- NASA has readied the space shuttle Endeavour for its liftoff set for Monday, media reported Monday.Good weather looks 70 percent likely for Monday's scheduled launch of Endeavour, the next-to-last U.S. space shuttle mission as NASA develops a new generation of craft for longer voyages."The updated forecast Sunday for Monday's launch of the shuttle Endeavour remains unchanged with a 70 percent chance of good weather," said NASA spokesman Allard Beutel.The space shuttle Endeavour STS-134 sits on launch pad 39A after the rollback of the Rotating Service Structure at the Kennedy Space Center in Cape Canaveral, Florida May 15, 2011.Liftoff is set for 8:56 a.m. EDT (1256 GMT) from the Kennedy Space Center for the trip to the International Space Station after the U.S. space agency repaired a technical glitch that canceled last month's launch attempt.The initial April 29 launch attempt was scrubbed hours before liftoff when technicians discovered a power failure in a heating line that served to prevent fuel from freezing in orbit.The six-member crew of astronauts including five Americans and one Italian, Roberto Vittori, will deliver a potent physics experiment to probe the origins of the universe during the mission, which will include four spacewalks.The 16-day mission is intended to help get the space station ready for operations after the shuttle fleet is retired. The 135th and final shuttle launch is scheduled for early- to mid-July aboard Atlantis.