济南右睾丸有硬块是什么原因(济南三分钟就射) (今日更新中)

LOS ANGELES, Oct. 3 (Xinhua) -- An organizer of the World Stem Cell Summit says one of the key problems medical researchers face these days is how to apply their findings in the real world."How do you take the phenomenal scientific research going on in labs and translate it into medical treatments,?" said Bernie Siegel, the founder and co-chair of the summit and executive director of the Genetic Policy Institute, which organized the event."It's a big job to do this, and more than just the science," Siegel said, noting that in a growing field now moving beyond basic lab research, the aim is to connect the people who do the work with those who finance it.The three-day summit, which opened Monday in Pasadena, features more than 150 top international speakers and 50 hours of programming with leaders from science, pharmaceutics, business, policy, ethics, law and other fields.The cell therapy industry, a "nascent" field, has emerged to be a potentially multi-billion business with unlimited potential, Siegel said.Stephen Dalton, a University of Georgia professor, reported that one of the biggest developments in stem cell research in the past year was the realization that cells can be transdifferentiated from one state to another without returning to a pluripotent state.Dalton said the principle was previously supported by a few isolated examples but it was not until 2010 that the idea was widely accepted.Mark Sussman, a professor from San Diego State University, called the identification of lung stem cells from human tissue samples capable of regenerating the highly complex and specialized structures of mature lungs a breakthrough in lung biology and regenerative medicine.He said results presented by the Anversa group in the New England Journal of Medicine demonstrate that human lung stem cells can be expanded in vitro and also retain the capacity to integrate into adult tissue upon introduction into mice.The study, Sussman said, has opened up an entirely new field of possibilities for lung regeneration and potential therapeutic applications for many conditions where treatment options are either very limited or nonexistent.

BEIJING, Nov. 5 (Xinhua) -- China said Saturday that positive and balanced outcomes were achieved at the sixth summit of the Group of Twenty (G20) held earlier this week in the southern French city of Cannes."All the sides were committed at the summit to further coordinating their macro-economic policies, stabilizing the financial market, prompting economic growth, improving global economic governance and working together to maintain the hard-won momentum of the economic recovery," said Ma Zhaoxu, spokesman of the Chinese delegation after President Hu Jintao returned from Cannes, where Hu and the leaders of other G20 members' met to tackle major issues affecting global economic recovery and financial stability.The Chinese spokesman mentioned the Declaration, the Communique and the Action Plan issued after the meeting as "three outcome documents" of the G20 Cannes summit.Ma said priority was given to the European sovereign debt issue at the meeting."All the sides noted that the European Union has recently put forward a new series of measures and ideas to address the sovereign debt issue and hope that these measures will help Europe to stabilize the financial market, overcome the current difficulties and spur the economic recovery and development," he said.The Cannes Action Plan approved at the summit was meant to coordinate the macro-economic policies of all the members to endorse economic recovery and summon market confidence, said the spokesman. "It (the passage of the Action Plan) fully displays the resolution of the G20 to work hand in hand to promote a robust, sustainable and balanced world economy."Ma also hailed the "important consensus" reached at the summit in terms of the reform of the international monetary and financial system, the vibration of commodity price, international trade and development among others."It was emphasized at the summit that to address the issue of development is a key task to advance the global economic recovery and growth in the future," he said.Ma said emerging economies played an "important and constructive" role during the G20 summit.The continuing economic growth of emerging nations have injected vitality into the stability and recovery of the world economy as the international financial market is striving in turmoil, he said.Developing countries, represented by the emerging ones in the G20, have become constructive participants of global economic governance, said the spokesman, "which is a great progress of the era and indicates an in-depth readjustment and a historic change in the international economic order," he added.

WASHINGTON, Dec. 5 (Xinhua) -- NASA's Kepler mission has confirmed its first planet in the "habitable zone," a region where liquid water could exist on a planet's surface, the U.S. space agency announced on Monday.The newly-confirmed planet, Kepler-22b, is the smallest yet found to orbit in the middle of the habitable zone of a star similar to Sun. The planet is about 2.4 times the radius of Earth. Scientists don't yet know if Kepler-22b has a predominantly rocky, gaseous or liquid composition, but its discovery is a step closer to finding Earth-like planets.Previous research hinted at the existence of near-Earth-size planets in habitable zones, but clear confirmation proved elusive. Two other small planets orbiting stars smaller and cooler than Sun recently were confirmed on the very edges of the habitable zone, with orbits more closely resembling those of Venus and Mars.Kepler-22's star is a bit smaller than our sun, so its habitable zone is slightly closer in. The diagram shows an artist's rendering of the planet comfortably orbiting within the habitable zone, similar to where Earth circles the sun. Kepler-22b has a yearly orbit of 289 days. The planet is the smallest known to orbit in the middle of the habitable zone of a sun-like star. It's about 2.4 times the size of Earth."This is a major milestone on the road to finding Earth's twin, " said Douglas Hudgins, Kepler program scientist at the NASA Headquarters in Washington. "Kepler's results continue to demonstrate the importance of NASA's science missions, which aim to answer some of the biggest questions about our place in the universe."Kepler discovers planets and planet candidates by measuring dips in the brightness of more than 150,000 stars to search for planets that cross in front, or "transit," the stars. Kepler requires at least three transits to verify a signal as a planet."Fortune smiled upon us with the detection of this planet," said William Borucki, Kepler principal investigator at the NASA Ames Research Center who led the team that discovered Kepler-22b. "The first transit was captured just three days after we declared the spacecraft operationally ready. We witnessed the defining third transit over the 2010 holiday season."The Kepler science team uses ground-based telescopes and the Spitzer Space Telescope to review observations on planet candidates the spacecraft finds. The star field that Kepler observes in the constellations Cygnus and Lyra can only be seen from ground-based observatories in spring through early fall. The data from these other observations help determine which candidates can be validated as planets.Kepler-22b is located 600 light years away. While the planet is larger than Earth, its orbit of 290 days around a Sun-like star resembles that of Earth. The planet's host star belongs to the same class as Sun, called G-type, although it is slightly smaller and cooler.Of the 54 habitable-zone planet candidates reported in February 2011, Kepler-22b is the first to be confirmed. This finding will be published in The Astrophysical Journal.

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