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BEIJING, March 22 (Xinhuanet) -- NASA scientists are testing its next-generation Mars rover, which will land on Mars next year, under extreme conditions at space-simulation chamber in California, media reports said Tuesday.Scientists at NASA's Jet Propulsion Laboratory in Pasadena, Calif., say they've installed the Curiosity rover in a space-simulation chamber that can mimic the environment the probe will encounter on Mars.  After the chamber's large door was sealed last week, air was pumped out to near-vacuum pressure, liquid nitrogen in the walls dropped the temperature to minus 130 degrees Celsius, and a bank of powerful lamps simulated the intensity of sunshine on Mars.After the test period, the rover along with other portions of NASA's Mars Science Laboratory spacecraft including the cruise stage, descent stage and backshell -- part of protective covering -- will be shipped to the Kennedy Space Center for final preparation for the launch window from Nov. 25 to Dec. 18, 2011. Curiosity will study whether a selected area of Mars has offered environmental conditions favorable for microbial life and for preserving evidence about whether Martian life has existed.

WASHINGTON, April 25 (Xinhua) -- A class of drugs that shows promise in breast and ovarian cancers with BRCA gene mutations could potentially benefit colorectal cancer patients with a different genetic mutation, a new study from the University of Michigan Comprehensive Cancer Center finds.Working in cell lines from colorectal cancer patients, researchers found that the class of drugs called PARP inhibitors worked against tumors with mutations in the MRE11 gene.About 15 percent of all colorectal cancers have what's called microsatellite instability, a type of error in the DNA. About 82 percent of those tumors have the MRE11 gene mutation."This is a potential broader application for PARP inhibitors, beyond breast and ovarian cancer. This is a class of drug that's already shown safety in early clinical trials and now might benefit some colorectal cancer patients as well," says lead study author Eduardo Vilar-Sanchez, a hematology/oncology fellow at the university, in a statement.The study, which was published Monday in Cancer Research, also found that PARP inhibitors are even more effective when both copies of MRE11 were mutated. Each person carries two copies of each gene, which means mutations can occur in either one or both copies. The researchers suggest that PARP inhibitors could be targeted specifically to colorectal cancer patients who have two copies of the mutated gene.Researchers are planning a phase I clinical trial to look at using PARP inhibitors in colorectal cancer patients with two mutated copies of MRE11. Future trials are being considered using PARP inhibitors to prevent colorectal cancer and other cancers in people with Lynch syndrome whose tumors have this mutation.Microsatellite instability is also seen in prostate cancer and endometrial cancer, suggesting potential for PARP inhibitors to play a role in additional types of cancer as well, Vilar-Sanchez says, adding that more research is needed in these areas.

CONAKRY, Feb. 14 (Xinhua) -- Guinean President Alpha Conde said Monday while meeting with visiting Chinese Foreign Minister Yang Jiechi that Guinea hopes to expand cooperation with China in a wide range of fields.Conde said Guinea values the traditional friendship with China, is grateful to China's assistance to Guinea under the framework of the Forum on China-Africa Cooperation, and appreciates the contribution China has made to the peace and common development of the world as well as the recovery of world economy from the global financial crisis.He reiterated Guinea's adherence to the one-China policy, and said the country is willing to learn from China's development experiences. Guinea hopes to further expand cooperation with China in such fields as water resources management, electricity generation and infrastructure building, said the president, who also welcomed Chinese companies to invest in Guinea.Also in a meeting with the visiting Chinese foreign minister, Guinea's Prime Minister Mohamed Said Fofana thanked China for sending medical teams to Guinea, helping Guinea train personnel in various sectors and constructing a series of aid projects in the African country. Fofana said Guinea expects to carry out all- around and mutually beneficial cooperation with China.For his part, the Chinese foreign minister said China-Guinea relations have been enjoying healthy and stable development throughout a period of over half a century, featuring political equality, mutual benefit and friendship.Yang said China has always been supporting Guinea's strive for peace and stability, and offering assistance for Guinea in social and economic development. He said enterprises from both sides have been carrying out cooperation in such realms as telecommunications, infrastructure building, among others.Yang said Guinea has successfully completed a political transition, and under the leadership of President Conde, the country will surely make more achievements in social and economic development. He noted that China is willing to make joint efforts with Guinea to consolidate traditional friendship, expand cooperation and push bilateral relations to a new height.The visiting foreign minister, who arrived here on Sunday, also met with his Guinean counterpart Edouard Niankoye Lama on Monday on bilateral cooperation and a number of other issues.

WUXI, Jiangsu, Feb. 17 (Xinhua) -- Chinese Vice Premier Zhang Dejiang said Thursday that developing quality labor and vocational skills would greatly contribute to the social and economic development of the Asia-Pacific region.He made the remarks while delivering a speech at the opening ceremony for the APEC (Asia Pacific Economic Cooperation) Skills Development Promotion Center which was launched in China's eastern city of Wuxi.The Center will play a positive role in enhancing human resources cooperation between APEC members and achieve "inclusive growth" in the region, Zhang said.The Chinese government has always held that human resources are the most important resource in social and economic development, and it would continue to actively take part in APEC activities that encourage regional exchanges and cooperation in human resource development, he said.China would fully support the APEC Skills Development Promotion Project and the development of the center with financial and technical backup, making it a platform for vocational training and personnel exchanges between APEC members, he added.The decision to establish the center was announced by Chinese President Hu Jintao during the 18th APEC Economic Leaders' Meeting in November last year, which sought to advance cooperation on human resources within the APEC framework.

DAVOS, Switzerland, Jan. 29 (Xinhua) -- China is ready to push the decade-long Doha Round negotiations for a final success, Chinese Minister of Commerce Chen Deming said here on Saturday.Speaking at the World Trade Organization (WTO) Mini-Ministerial Meeting which brought together representatives from over 20 major trading powers, Chen said that China is ready to collaborate with other WTO members in a practical and proactive manner so as to draw a successful conclusion of the Doha Round talks by the end of 2011.A rapid conclusion of the negotiations, Chen said, will be beneficial to global economic recovery, which is to the interest of all.The commerce minister acknowledged the year 2011 as a "window of opportunity," albeit a narrow one."China will give support to the roadmap proposed by WTO Director-General Pascal Lamy," he said, adding that the country is willing to act vigorously to push forward the negotiation process.To ensure that an early final deal could be in reach, Chen said, parties should set goals in a practical manner, in accordance with the ambition level, and stick to what has been achieved as well as the Doha Development Agenda (DDA), while focusing primarily on pending issues.Held on the sidelines of the annual World Economic Forum, the WTO Mini-Ministerial Meeting is an annual event under the auspices of the Swiss Federal Government.Chen on Friday also joined discussions with his counterparts from the emerging club -- India, Brazil and South Africa, before attending the trade G7 meeting, consisting of Australia, Brazil, China, the European Union, India, Japan and the United States.

来源：资阳报