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LOS ANGELES, May 14 (Xinhua) -- Thousands of visitors, many of them children, went to the Jet Propulsion Laboratory (JPL) in Pasadena, California for the annual open house Saturday to experience the excitement in explorations.To many visitors, the open house is a rare opportunity to see the federally funded research and development center and the National Aeronautics and Space Administration (NASA) field center, which is close to the public. JPL is managed by California Institute of Technology.The event, themed "The Excitement in Explorations," provides visitors with the chance to share in the wonders of space through high-definition and 3-D videos, live demonstrations, interactions with scientists and engineers, and a first look at JPL's new Earth Science Center.The Earth Science Center showcases the home planet and JPL's Earth science missions. Since it was the first time open to the public, it attracted many visitors who had to wait for over an hour to get admitted.Visitors first passed by two touchscreens located on opposite walls of the facility that control real-time views of "Eyes on the Earth," an interactive 3-D visualization website. Visitors also had the opportunity to watch a movie in the 3-D theater, which seats up to 40 people.Other Open House highlights include: A chance to see the most unique car in this world before it leaves Earth: The next rover bound for Mars, Mars Science Laboratory/Curiosity, in the "clean room" before it is shipped to Florida for a November 2011 launch.JPL further runs its own "reality TV show" via live-streaming webcam: http://www.ustream.tv/nasajpl.The life-size rover models in a "Mars" test bed is another attraction and a perennial crowd-pleaser. Named the Robo-Dome, it is where visitors could see a pair of 700-pound robots gliding in a high-tech arena under artificial stars.The Robo-Dome is used to simulate complex maneuvers that could be used for future space missions.The year 2011 is an exciting year for JPL's robotic explorers. In the past twelve months, two spacecraft made close encounters of comets. This summer, the Dawn spacecraft will arrive at the giant asteroid Vesta.In 2011, JPL will launch the Aquarius satellite studying Earth' s ocean, the Juno mission to Jupiter, the Gravity Recovery and Interior Laboratory's twin spacecraft to Earth's moon, and JPL's next-generation rover - Mars Science Laboratory's Curiosity.

NAIROBI, Feb. 23 (Xinhua) -- The East Africa Community (EAC) and the Chinese government held talks on Wednesday to explore new areas of cooperation and boost trade between both sides.A statement from the EAC Secretariat said China's Ministry of Commerce Director Department of West Asian and African Affairs Chai Zhijing held discussions with Secretary General of the East African Community Juma Mwapachu on bilateral cooperation. "The Chinese delegation were at the EAC Headquarters to explore areas of cooperation specifically trade and investment opportunities in areas such as agriculture, animal-husbandry, production and processing of mineral and other natural resources, manufacturing, commerce and logistics, and tourism," the statement said.It noted that the delegation wants to know how China could support and facilitate cross-border infrastructure projects such as transport, communication and power.The Chinese and EAC officials also discussed cooperation in human resource development and training.Speaking during the meeting, Mwapachu said the visit by the director will open further the cooperation space between China and the EAC.He said the prevalence of Chinese firms in the region was very high in the construction industry and some other infrastructural developments.He noted that Chinese companies were involved in the construction of the EAC Arusha-Namanga-Athi River Road projectThe EAC secretary general said the regional economic bloc, which comprises Kenya, Uganda, Tanzania, Rwanda and Burundi, was truly looking forward to forging a lasting relationship with China.Chai said China has very good economic and cultural relations with all the five partner states of the East African Community and that all the five states were enjoying economic stability.He said EAC had a reputable framework for integration and development for the region, adding that "these form the solid basis for establishing cooperation with the People's Republic of China."The two sides agreed to come up with a concrete framework for engaging each other in the identified areas of cooperation, within one month.

VIENNA, April 12 (Xinhua) -- A protein group has been identified as an "allergy multiplier" that causes food allergy, a symptom that could also accompany other allergies and produce serious consequences, Austrian researchers said Tuesday.The so-called non-specific lipid transfer proteins (nsLTP) are believed to be the causes of food allergy, a research team from the Medical University of Vienna said in a new report.These plant allergens are found not only in many fruits and vegetables, but also in cereals and some types of pollen. Due to their compact structures, they are not degraded in the gastrointestinal tract and can trigger immune reactions that cause severe allergic symptoms, said the report.The researchers believe that with nsLTP identified as an " allergy multiplier," diagnostic and treatment procedures could be adapted and improved.

VIENNA, March 28 (Xinhua) -- Stress hormone is helpful in alleviating acrophobia, a morbid fear of great heights, according to a study by Austrian scientists.They published the findings in the recent Proceedings of the National Academy of Sciences of the United States of America.Frank H. Wilhelm, professor from the Department of Clinical Psychology, Psychotherapy and Health Psychology at the University of Salzburg, Austria, carried out the first study demonstrating the clinical effectiveness of hormones released at periods of high stress in anxiety.The study found hormones and other drugs could be a good addition to behavioral treatment of several anxiety disorders.People with acrophobia have formed a so-called fear memory, which could be activated when the fear-causing stimulus occurs. They tend to react with feelings of extreme fear and anxiety to the ride in a glass elevator.Hence, scientists conducted a confrontation therapy, trying to mask this memory.A total of 40 experimental subjects had been put in a safe environment to constantly confront the fear-inducing stimulus, until they had a new reaction to the perceived threat.Observations also suggested hormones released in high stress had impact on learning and memory.Additionally, stress hormones were believed to facilitate the storage of new, anxiety-free competence and experienced confidence in the therapy. Animal studies have shown that this emotional relearning benefits from cortisol, one of the stress hormones.

WELLINGTON, May 24 (Xinhua) -- New Zealand researchers have found a way to stop the growth of certain cancer tumors by " silencing" a group of PAX genes, members of a small family of genes that play important roles in embryonic development, but also allow cancer cells to grow and divide in adult tissue.In an article published in UK medical journal Oncogene, Otago University Professor Michael Eccles and colleagues revealed how they used the PAX8 gene to kill cancer cells.After detecting high levels of PAX8 protein in the majority of kidney, ovarian and thyroid cancers they studied, the researchers used molecular techniques to silence the PAX8 gene in several cancer cell lines."We found that these PAX8-depleted cancer cells ceased growing and dividing. The cells were essentially stopped in their tracks through the failure of multiple mechanisms and pathways crucial to their cell division cycle. They then entered into a state called senescence in which they no longer divided, and after that they ultimately died," Eccles said in a statement from the university Tuesday.The findings suggested that PAX8 could be a good target for the development of new cancer therapies, he said."Any resulting drugs would be a long way down the road, but in the meantime this research helps confirm that a focus on PAX genes may prove to be a fruitful line of attack against a number of cancers," he said.The research was supported by grants from the Health Research Council of New Zealand. It formed the main piece of work carried out by Otago doctoral graduate Caiyun (Grace) Li, now a postdoctoral fellow at Stanford University. Study co-authors also included Professor Antony Braithwaite and master's student Jen Nyman.In 2003, research led by Eccles discovered that proteins from one or more of the nine PAX genes were present in many common cancers. They found that "silencing" the gene expression of PAX2 in ovarian and bladder cancer cells, and of PAX3 in melanoma, led to the rapid death of the cells.

来源：资阳报