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发布时间: 2025-06-02 18:46:55北京青年报社官方账号
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SINGAPORE, April 21 (Xinhua) -- Singapore's first locally-built satellite has been officially launched from a space center in India after a four-year delay, Singapore media reported on Thursday.The 105 kg fridge-size X-Sat was one of three riding on Isro's Polar Satellite Launch Vehicle (PSLV-C16) from the Satish Dhawan Space Center in India on Wednesday. It will be used to take photographs to measure soil erosion and environmental changes on earth, local daily Straits Times said.The launch at 12:42 p.m. on Wednesday was the 18th successful lift-off since the maiden flight of PSLV in 1994.The satellite was designed and built by Singapore's Nanyang Technological University and Singapore's defense research body DSO National Laboratories.Now in orbit, the satellite is establishing communication contact with the ground control in Nanyang Technological University, a process that is likely to take up to a week.The launch capped more than nine years of hard work by scientists and engineers. It also makes Singapore one of the first countries in Southeast Asia to have its own satellite in space. Previous satellite launched by Singapore involved construction efforts by foreign companies.

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MOSCOW, Feb. 9 (Xinhua) -- China's steady economic rise causes both high hopes and anxiety among world leaders, but a Russian expert believes China's peaceful development is an opportunity for the entire world.Yakov Berger of the Far East Institute of the Russian Academy of Sciences told Xinhua that China's policy of peaceful development is a strategic choice, aimed at long-term and sustainable growth."China overcame the global financial crisis, decreased poverty, and increased people's wealth," Berger said."Still, many important tasks for China remain to be fulfilled and first of all, modernization, industrialization and urbanization. This is why China needs strong and long-lasting peace," he said.Berger said China's policy of peaceful development has already won support from the majority of countries, so they are willing to cooperate with the world's most powerful developing nation."China's peaceful development gives chance to all people in the world, as China became the main engine of the global economic development. Many developed countries are gravitated to China because they depend on Chinese supplies and the Chinese market," Berger said.However, although some countries are aware that China's sustainable growth requires peace and stability, some eye China's growing influence as negative, the professor said.Berger said that Beijing tries to persuade Washington that China's rise does not threaten American security. The question, then, is to what degree is the U.S. ready to accept the new reality, Berger said.Berger cited two main reasons why some Western politicians don't trust Beijing."First, this is a natural response from the people who got used to a certain world order," he said, "Such an order implies the existence of the so-called 'golden billion' people who have access to all of civilization's benefits while the other five billion can't make ends meet."Berger said that when China attempts to achieve the same living standards, that induces some fears based on the notion that the Earth resources are limited.Berger believed the second reason is xenophobia and racism, which generates talk about the "Chinese threat.""But they talked about the 'China threat' even in times when China used to be an underdeveloped nation," Berger noted.

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LOS ANGELES, May 12 (Xinhua) -- A subsurface ocean of molten or partially molten magma exists beneath the surface of Jupiter's volcanic moon Io, the Jet Propulsion Laboratory (JPL) said on Thursday."The finding heralds the first direct confirmation of this kind of magma layer at Io and explains why the moon is the most volcanic object known in the solar system," JPL said in a press release posted on its website.The finding was based on new data analysis from NASA's Galileo spacecraft, said JPL.The research was conducted by scientists at the University of California, Los Angeles; the University of California, Santa Cruz;, and the University of Michigan, Ann Arbor. The study is published this week in the journal Science, JPL said."Scientists are excited we finally understand where Io's magma is coming from and have an explanation for some of the mysterious signatures we saw in some of the Galileo's magnetic field data," said Krishan Khurana, lead author of the study and former co- investigator on Galileo's magnetometer team at UCLA."It turns out Io was continually giving off a 'sounding signal' in Jupiter's rotating magnetic field that matched what would be expected from molten or partially molten rocks deep beneath the surface."Io produces about 100 times more lava each year than all the volcanoes on Earth, according to data released by JPL in Pasadena, Los Angeles.While Earth's volcanoes occur in localized hotspots like the "Ring of Fire" around the Pacific Ocean, Io's volcanoes are distributed all over its surface, JPL said, adding that a global magma ocean about 30 to 50 km beneath Io's crust helps explain the moon's activity."It has been suggested that both the Earth and its moon may have had similar magma oceans billions of years ago at the time of their formation, but they have long since cooled," said Torrence Johnson, a former Galileo project scientist based at JPL, an affiliation with NASA."Io's volcanism informs us how volcanoes work and provides a window in time to styles of volcanic activity that may have occurred on the Earth and moon during their earliest history," said Johnson, who was not directly involved in the study.NASA's Voyager spacecraft discovered Io's volcanoes in 1979, making that moon the only body in the solar system other than Earth known to have active magma volcanoes. The energy for the volcanic activity comes from the squeezing and stretching of the moon by Jupiter's gravity as Io orbits the largest planet in the solar system.Galileo was launched in 1989 and began orbiting Jupiter in 1995. Unexplained signatures appeared in magnetic field data from Galileo flybys of Io in October 1999 and February 2000. After a successful mission, the spacecraft was intentionally sent into Jupiter's atmosphere in 2003.

  

BEIJING, Feb. 15 (Xinhua) -- China's health authorities Tuesday vowed to improve their response to food safety incidents.The ministry would issue a protocol "as early as possible" on how to respond to and investigate food safety incidents, said Vice Health Minister Chen Xiaohong at a national meeting on food safety in Beijing.It would also provide better training for officials and professionals working in the field, Chen said.Last year, the ministry initiated investigations into several incidents such as milk powder that allegedly caused infant girls to grow breasts and illegal soup additives by restaurants.In the milk powder case, the investigation found no evidence that Synutra International's products had caused the problem. Media reports said the company was the victim of dirty tricks by a rival firm.In addition, the ministry blacklisted 48 substances illegally added to food and 22 misused food additives last year.The ministry would include projects related to food safety in state-sponsored health programs giving free medical services to the public in next five years, Health Minister Chen Zhu said at the same meeting.But Chen did not give details about what kind of projects they will be.Under the current six state health programs, the government provides free cataract surgery for the needy, free breast and cervical examinations for rural women, free hepatitis B vaccines, free folic acid pills for rural women, new cooking stoves in rural homes to prevent fluorine poisoning caused by coal stoves as well as modern toilets for rural residents.

  

CHENGDU, May 8 (Xinhua) -- As a brand-name herbal capsule for cardiovascular disease in China, Di'ao Xinxuekang only needs to wait for another 15 years before reaching the EU market."The Dutch medical supervisors have recognized it as a qualified drug, but we still lack the evidence of 15-year presence in the EU market," said Ji Jianxin, a research manager with the drug's developer Di'ao Group based in southwest China's Sichuan Province.Di'ao, one of the largest Traditional Chinese Medicine (TCM) manufacturers, has been quite depressed, as many other TCM enterprises in China, by a European Union directive on traditional herbal medicinal products fully implemented from the beginning of this month.The directive requires that all herbal medicinal products, must obtain a medical license from any EU member state before it can be allowed in the EU market.It introduced a so-called simplified registration procedure with a seven-year transition period for traditional herbal medicinal products to be licensed, including Chinese and Indian ones.However, not a single Chinese herbal medicinal product has been granted the license so far, mainly due to the prohibitive registration cost and lack of required evidence to prove the product had a 30-year history of safe use, including 15 years in the EU.With a history of more than 2,000 years, TCM did not enter into the EU market until mid-1990s, and it has been imported into the EU and sold to European customers as food supplements instead of drugs.Most Chinese producers and importers did not reserve the customs papers a decade ago, thus unable to prove the 15-year use of their products in European markets.While TCM's globalization won't be doomed by one single EU directive as TCM export value to EU only takes up 14 percent of the total in 2010, experts and industry insiders still have had serious concerns about its future."Most TCM even don't have standardized labels that can help consumers to find out its origin," said Xian Sheng, from the China Association of TCM Export Companies.

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