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宜宾开眼角后的效果
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钱江晚报

发布时间: 2025-05-31 11:41:02北京青年报社官方账号
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  宜宾开眼角后的效果   

BEIJING, Feb. 7 (Xinhua) -- China on Monday called for calmness and restraint from both Cambodia and Thailand to prevent the escalation of border conflicts between the two southeast Asian countries."Both Cambodia and Thailand are China's friendly neighbors. China hopes that the two nations exercise calmness and restraint, resolve disputes through consultation, and prevent the situation from escalation," Foreign Ministry spokesman Hong Lei said.The latest fighting between Cambodian and Thai troops in their age-old territorial dispute erupted at the border region Friday afternoon and entered the fourth consecutive day Monday.

  宜宾开眼角后的效果   

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.

  宜宾开眼角后的效果   

The severe water shortages have become a major bottleneck to our sustainable development. Nearly two-thirds of the cities in China lack water," said Chen Lei, Minister of Water Resources.From 2011 to 2015, China will strive to limit its annual water consumption within 620 billion cubic meters and cut water consumption per 10,000 yuan of GDP by 30 percent.

  

HOUSTON, May 2 (Xinhua) -- The Offshore Techonology Conference, one of the world's largest offshore technology shows, kicked off here Monday.The five-day event, which attracted an estimated 72,000 victors from all around the world, not only provided a platform for the about 2,400 participating companies from 40 countries to lure visitors with their newest products and technologies, but also for the them to share insights and discuss issues the industry is facing.On Monday, a number of companies, including Halliburton and Baker Hughes, received the Spotlight on New Technology Award by the OTC for their new products and solutions.Founded in 1969, the annual Offshore Technology Conference is the world's foremost event for the development of offshore resources in the fields of drilling, exploration, production, and environmental protection. OTC is held annually at Reliant Center in Houston.

  

CANBERRA, May 27 (Xinhua) -- An Australian student has discovered a part of the universe that astrophysicists have spent decades trying to find, Australia's Monash University on Friday confirmed in a statement.Astrophysicists have long thought the universe has a greater mass than is visible in the planets, but they had no way of proving it is there.Undergraduate student Amelia Fraser-McKelvie, 22, was on a summer internship at Monash University to learn more about astrophysics, when she managed to solve one of the big mysteries of science.Fraser-McKelvie, an aerospace engineering student, conducted a targeted X-ray search for the matter and found evidence of it within three months.Her tutor, Kevin Pimbblet, said the discovery is significant."We've been looking for this ordinary matter for a couple of decades," he said in a statement on Friday."It's been published in one of the most prestigious journals in the world, so astronomers all over the world will be able to read this article."Scientists had thought the matter would have a temperature of about 1 million degrees Celsius, 1.8 million degrees Fahrenheit, and should therefore be observable at X-ray wavelengths.Amelia Fraser-McKelvie's discovery has proved that prediction is correct, Pimbblet said.The trio published a research paper on the missing mass in one of the world's oldest and most prestigious scientific journals, Monthly Notices of the Royal Astronomical Society.He said the discovery could change the way telescopes are built.

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