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LOS ANGELES, April 1 (Xinhua) -- A NASA Gulfstream-III aircraft equipped with a synthetic aperture radar is scheduled to depart Sunday, April 3 on a nine-day mission to image Hawaii volcanoes, the Jet Propulsion Laboratory (JPL) announced on Friday.The aircraft will fly from the Dryden Aircraft Operations Facility in Palmdale, California to the Big Island of Hawaii to study the Kilauea volcano that recently erupted, said JPL in Pasadena, Los Angeles.The mission will help scientists better understand processes occurring under Earth's surface, JPL said.Developed by JPL, the Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR, uses a technique called interferometric synthetic aperture radar that sends pulses of microwave energy from the aircraft to the ground to detect and measure very subtle deformations in Earth's surface, such as those caused by earthquakes, volcanoes, landslides and glacier movements.As the Gulfstream-III flies at an altitude of about 12,500 meters, the radar, located in a pod under the aircraft's belly, will collect data over Kilauea, according to JPL.The UAVSAR's first data acquisitions over this volcanic region took place in January 2010, when the radar flew over the volcano daily for a week. The UAVSAR detected deflation of Kilauea's caldera over one day, part of a series of deflation-inflation events observed at Kilauea as magma is pumped into the volcano's east rift zone.This month's flights will repeat the 2010 flight paths to an accuracy of within 5 meters, or about 16.5 feet, assisted by a Platform Precision Autopilot designed by engineers at NASA's Dryden Flight Research Center on Edwards Air Force Base, California, JPL said.By comparing these camera-like images, interferograms are formed that reveal changes in Earth's surface, said JPL.Between March 5 and 11, 2011, a spectacular fissure eruption occurred along the east rift zone. Satellite radar imagery captured the progression of this volcanic event."The April 2011 UAVSAR flights will capture the March 2011 fissure eruption surface displacements at high resolution and from multiple viewing directions, giving us an improved resolution of the magma injected into the east rift zone that caused the eruption," said JPL research scientist Paul Lundgren."Our goal is to be able to deploy the UAVSAR on short notice to better understand and aid in responding to hazards from Kilauea and other volcanoes in the Pacific region covered by this study," Lundgren added.

BEIJING, May 24 (Xinhuanet) -- Scientists revealed for the first time the molecular structure of proteins, which enables bacteria to transfer electrical charges, according to a new study. The revelation was published in Proceedings of the National Academy of Sciences in the U.S. on Monday.Scientists used a technique called "x-ray crystallography" to reveal the molecular structure of proteins, which work as atom-sized "wires" discharging excess electricity."This is an exciting advance in our understanding of how some bacterial species move electrons from the inside to the outside of a cell," said lead author Tom Clarke of the University of East Anglia's School of Biological Sciences in Norwich, England.He said this discovery means "We can now start developing efficient 'bio-batteries' as the viable energy source in the future."Still, it could take perhaps a decade to go. Before that, existing uses of such bacteria needed to become 100 or 1,000 times more efficient, he said.The advance could also hasten the development of microbe technology that can help clean up oil or uranium pollution, he said.Microbes might in future be enlisted to clean up nuclear accidents such as Japan's Fukushima Daiichi disaster, he added.

SHANGHAI, March 17 (Xinhua) -- Lenovo Group and a subsidiary of Shanghai Media Group (SMG) signed an agreement on Thursday to create a firm that would provide mobile-Internet video services.BesTV New Media Co., a subsidiary of SMG, owns 51 percent of the venture, named Shanghai Video Cloud Company Limited, while Lenovo owns the remainder. The total investment of both parties in the new firm exceeded 10 million yuan (1.52 million U.S. dollars), according to the agreement.Lenovo is currently the largest personal computer maker in China. BesTV New Media is a provider of Internet Protocol Television (IPTV), mobile television and other forms of new media. 

GUIYANG, Jan. 23 (Xinhua) -- Migrant workers, or off-farm workers, in China should enjoy paid annual family-visit vacations as their urban counterparts, a political advisor in southwest China's Guizhou Province had said."Localities could legislate on the issue on a trail basis," said Yu Peixuan, a member of the Guizhou Provincial Committee of the Chinese People's Political Consultative Conference (CPPCC), made this proposal at the political advisory body's annual session held Jan. 16-22.If migrant workers took paid home leave every year, they would have more time to help their wives in rural homes do the heavy farm work and educate their children, said Yu. "Thus, family ties would be cemented."Statistics show that 47 million women remain at home in rural China when adult males go off to cities to earn their livings.These women played an important role in taking care of the elderly people and children in their rural homes, but they also face many practical difficulties, such as heavy farm work and dull daily life.One of the major factors affecting these women's quality of life was the lack of communications with their husbands, said Yu.Yu called on large enterprises to allow migrant workers to take paid home leave first to set an example for other enterprises.According to the present Labour Law, regular workers at government organs, institutions and state-owned enterprises are eligible for paid vacations of one month per year to visit separated spouses in different cities or regions.

BEIJING, March 8 (Xinhuanet) -- U.S. Food and Drug Administration (FDA) announced there was no new reason for safety concern in Pfizer Inc's Prevenar and Sanofi Aventis SA's ActHIBor vaccines, according to media reports Tuesday.Health agencies "have not detected new safety concerns or unusual reporting patterns" in the vaccines, which are used to prevent forms of meningitis and pneumonia, FDA spokeswoman Shelly Burgess said in an emailed statement.Health agencies in the United States will continue to monitor the vaccines for safety, the spokeswoman added.The Japanese health ministry had decided to suspend the vaccines after four unexplained deaths were reported. The causes of the deaths are still investigated, the Japanese ministry said in a release on its website.

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