濮阳东方医院男科看早泄(濮阳东方医院看妇科病技术专业) (今日更新中)

HONG KONG, Sept. 9 (Xinhua) -- The Hong Kong Polytechnic University (PolyU) announced Friday that its surveying experts had successfully developed methodologies for precise mapping of the Moon, after intensive analysis of the data captured by the Chinese lunar orbiter ChangE-1 and other lunar exploration missions.According to the PolyU, the team has made significant contributions to lunar mapping. Their efforts culminated in the development of a unique and innovative approach to the creation of accurate 3D models of the lunar surface.The team has produced the most updated parameters of the lunar figure (the shape of the moon), which is essential for lunar mapping using 17.5 million laser altimetry measurements from the ChangE-1and the Japanese SELENE missions.In addition, they also used the new topographic and gravity models to calculate improved crustal thickness and mass distribution of the Moon and established that the average thickness of the Moon's crust is about 40 km on the near side and 50 km on the far side.It was introduced that the resulting lunar mapping was the hard work of a dedicated research team led by Professor Chen Yong-qi, Emeritus Professor of the Department of Land Surveying and Geo-Informatics, who is also serving on the Expert Committee of China's Lunar Exploration Programme (ECCLEP), with the concerted efforts of team members Prof. Chen Wu, Prof. Ding Xiao-li, Prof. Baki Iz, Dr. Bruce King, and Dr. Wu Bo.According to Chen Yong-qi, the lunar mapping project started in 2006. The primary objective was to develop the methodologies and techniques for mapping the Moon surface, which is much more challenging than mapping the Earth's surface because of very few surveyed control points which are essential for accurate map making.Statistics showed that there were only fourteen lunar laser ranging retro reflectors (LRRR) and Apollo lunar surface experiment package (ALSEP) transmitter sites with accurately known coordinates available only on the near side of the Moon, installed by the U.S. Apollo and former Soviet Union Luna missions in the 1960s.Moreover, according to the team, the gravitational field of the Moon is not as well-known as that of Earth, which means the accuracy of the computed lunar satellite's position at any given time is lower than for Earth satellites, thus degrading the mapping accuracy and reliability.In addition, the team expressed that highly reflective lunar surface created significant problems for the automatic processing of images to develop 3D models using the technique of photogramemtry, which is a widely used and highly reliable technique for the creation of maps and 3D models on Earth.Furthermore, the team also revealed they had a plan to compare such data with other data sources in order to evaluate the performance of the ChangE mapping sensors. Since Chen Yong-qi is serving on the ECCLEP, the team has direct access to more recent data captured by the ChangE satellite.

SUVA, Sept. 21 (Xinhua) -- The Secretariat of the Pacific Community (SPC) stressed on Wednesday that sustainable use and management of forests and tree resources will remain its important focus for the foreseeable future.Sairusi Bulai, a forestry team coordinator of SPC's Land Resources Division (LRD) told a regional workshop currently underway in Fiji's western tourist city of Nadi that "our main issue was and continues to be the lack of adequate resources to enable countries to effectively implement sustainable forest management.""Therefore, we are very fortunate that we have this opportunity to discuss findings and recommendations of the mission, which the UN-REDD Program has undertaken in the Pacific earlier this year," he added.REDD+ is a new international mechanism to compensate developing countries for reducing their rate of deforestation and forest degradation and increasing their carbon stocks.Developing countries participate on a voluntary basis. They provide technical and financial assistance to enable eligible countries to meet the requirements for future participation. Once a country begins participating, it receives compensation for its verified reduction in carbon emission from forest activities.The UN-REDD Program is a collaborative partnership of the United Nations Development Program (UNDP), the United Nations Environment Program (UNEP) and the Food and Agriculture Organization (FAO) to support countries in the preparation of this mechanism.Bulai encouraged participants to take advantage of the excellent opportunity to discuss REDD+ experiences in the region and to link up with the experts in attendance.REDD+ gives an excellent opportunity to create better awareness and understanding amongst all stakeholders, including resource owners, so that informed decisions are made to avoid exploitation, he said.Bulai, meanwhile, stressed on the critical importance of multi- sectoral as well as multi-stakeholder based approaches to forest management to effectively reduce deforestation and forest degradation.

BEIJING, Aug. 14 (Xinhua) -- China's National Energy Administration (NEA) announced Sunday that the country's total electric power consumption rose 12.2 percent from a year earlier to 2.69 trillion kilowatt-hours (kwh) during the first seven months of this year.In July alone, power consumption was up 11.8 percent year-on-year to 434.9 billion kwh, according to the NEA.During the first seven months, power consumption in the country's primary industries rose 5.1 percent year-on-year to reach 59.1 billion kwh; power use in secondary industries totaled 2.0253 trillion kwh, up 11.9 percent; consumption in tertiary industries surged 15.5 percent to reach 285.3 billion kwh.Meanwhile, consumption by residents in both urban and rural areas rose 12 percent to 317.2 billion kwh.Power generated by China's newly-built power plants reached 41.23 million kilowatts during the January-July period, of which 7.69 million kilowatts was hydro-generated and 27.74 million was coal-fire generated.

SAN FRANCISCO, Aug. 22 (Xinhua) -- Hewlett-Packard's tablet TouchPad has become the hottest consumer electronics device on Monday after HP launched a fire sale for the discontinued product line over the weekend."It was like a stampede and they went quick," a Best Buy employee in San Diego told technology news website Betanews, describing the line waiting to buy TouchPad. He said the discontinued tablet was sold out five minutes after the store opened.The device is also getting snatched up at a lighting speed online and increasingly difficult to find.The TouchPad is no longer listed on Bestbuy.com in the United States, which last week was reportedly sitting on 270,000 unsold TouchPads and was hoping HP would buy them back.On Amazon, TouchPad tops the world's largest online retailer's electronics sales list, beating out the electronic reader Kindle and iPod touch.Last Thursday, HP announced that it will completely shut down its webOS operations, specifically the TouchPad tablet and webOS phones.The 16 GB TouchPad currently is only 99.99 U.S. dollars, compared to the original price of 399 dollars. The 32 GB model, which used to be 485.99 dollars, is now priced at 149.99 dollars.

BEIJING, Aug. 3 (Xinhuanet) -- NASA Tuesday confirmed a 4-foot in diameter sphere debris as a fuel tank that was part of the space shuttle Columbia's electrical power system,according to U.S. news reports.NASA engineers identified the 4-foot piece of spherical debris as one of the18 tanks that held chilled oxygen and hydrogen used by the shuttle's electricity-generating fuel cells.This Aug. 1, 2011 handout photo provided by the Nacogdoches Police Department shows a 4-feet in diameter sphere found in Lake Nacogdoches, Texas on Monday, Aug. 1. Police say low water levels at the lake during the drought have led to recovery of a container-like object that could be from space shuttle Columbia. The shuttle broke apart and burned in February 2003, scattering remnants over East TexasPolice in the city of Nacogdoches, about 160 miles northeast of Houston, said Monday the low water levels of Lake Nacogdoches during the record drought revealed an unexpected object that could be from space shuttle Columbia. The shuttle broke apart and burned as it re-entered the atmosphere on February 1, 2003.The tank will be moved to the Kennedy Space Center, where the rest of the Columbia is stored. Approximately 40 percent of the spacecraft has been recovered.

来源：资阳报