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TEHRAN, June 15 (Xinhua) -- Iran puts the Rasad (surveillance) satellite in the orbit on Wednesday, the state IRIB TV website reported.The Rasad satellite will render images to the country, said the report.All the procedure of designing, construction, testing and preparations to launch the satellite have been conducted domestically by Iranian experts, according to IRIB.The Rasad, weighs 15.3 kilograms and has been designed to be launched at 260 kilometers above the earth, said IRIB, adding that it will circle the earth 15 times in 24 hours.

BEIJING, July 26 (Xinhuanet) -- The breast cancer is more deadly to black women than to whites, a new study found.This finding was published online Monday on the "Journal of Clinical Oncology" in the United States.The study was done by the City of Hope, a Comprehensive Cancer Center in Duarte, California.The researchers collected data from more than 4,500 U.S. women in the 35-64 age group who were diagnosed with breast cancer.With the passing of  more than eight years, the researchers found the black women have a three times death rate than white women, after taking obesity and other diseases into account."It’s been long known that breast cancer in African-American women is a far less common disease than in white women. But when it occurs, it seems to be more aggressive and harder to treat," said Dr. Lisa Carey of the University of North Carolina’s Lineberger Comprehensive Cancer Center.But why the situations varied by race, scientists are still exploring the answer.

WASHINGTON, June 6 (Xinhua) -- Forests in many regions are becoming larger carbon sinks thanks to higher density, U.S. and European researchers say in a new report.In Europe and North America, increased density significantly raised carbon storage despite little or no expansion of forest area, according to the study, led by Aapo Rautiainen of the University of Helsinki, Finland, and published Monday in the on- line, open-access journal PLoS One.Even in the South American nations studied, more density helped maintain regional carbon levels in the face of deforestation.The researchers analyzed information from 68 nations, which together account for 72 percent of the world's forested land and 68 percent of reported carbon mass. They conclude that managing forests for timber growth and density offers a way to increase stored carbon, even with little or no expansion of forest area."In 2004 emissions and removals of carbon dioxide from land use, land-use change and forestry comprised about one fifth of total emissions. Tempering the fifth by slowing or reversing the loss of carbon in forests would be a worthwhile mitigation. The great role of density means that not only conservation of forest area but also managing denser, healthier forests can mitigate carbon emission," says Rautiainen.

BEIJING, Aug. 22 (Xinhuanet) -- Researchers have discovered how a human egg captures an incoming sperm for fertilization, paving the way to help couples suffering from infertility, according to media reports on Monday.An international team of researchers found that a sugar chain known as the sialyl-lewis-x sequence (SLeX) makes the outer coat of the egg “sticky,” which has proven to be helpful in binding the egg and the sperm.As a result, this observation has filled in a huge gap in the understanding of fertility and provides hope for ultimately helping couples who currently cannot conceive.Scientists and doctors know that a sperm identifies an egg when proteins on the head of the sperm match and bind to a series of specific sugars in the egg’s outer coating. With a successful match of proteins, the outside surfaces of the sperm and egg then bind together before merging, which is then followed by delivery of sperm’s DNA into egg.To identify this molecules, the researchers used ultra-sensitive mass-spectrometric imaging technology to observe and identify which molecules are most likely to be key in the binding process.They experimented with a range of synthesised sugars in the laboratory and found that it is SLeX that specifically binds sperm to an egg.According to the World Health Organisation, infertility affects about 15 percent of reproductive-aged couples around the world and almost one in every seven couples in Britain has problems conceiving a child for various reasons.

BEIJING, May 30 (Xinhuanet) -- Chronic diseases, including heart disease, stroke, cancer, chronic respiratory diseases and diabetes, are the leading cause of mortality in China, representing 85 percent of all deaths, said a senior health official.Kong Lingzhi, deputy director of the disease prevention and control bureau under the Ministry of Health, made the remarks on Saturday at the Forum of Prevention and Control of Chronic Disease."China is facing a great challenge from chronic diseases, which has a serious impact on both the economy and society," said Kong.Each year, about 3.7 million people die before they reach 60 because of chronic diseases. There are currently 200 million hypertension patients and 90 million diabetics in China, official statistics show.To address the challenge, "the government is now drafting an inter-ministerial roadmap for chronic disease intervention, which will set targets, define responsibilities and distribute guidelines for the prevention and control of chronic diseases," she said.The initiative aims to strengthen national and global monitoring and surveillance; scale up the implementation of evidence-based measures to reduce risk factors, such as tobacco use, an unhealthy diet, physical inactivity and harmful alcohol use; and improve access to cost-effective healthcare to prevent complications, disabilities and premature death.But more importantly, the roadmap will help gain attention and support for preventing and controlling chronic diseases and place it high on government working agendas, Kong explained.The government has focused more on addressing instant health crises up to now and policy and funding support for chronic disease control and prevention was very limited, admitted Mao Qun'an, spokesman of the ministry.Given that chronic disease control requires a systematic approach, tasks such as public health education, training for medical workers (especially the grassroots ones) and policies encouraging doctors' involvement need to be carried out, he said.The ultimate goal is to prevent people from getting ill rather than treating diseases, he added.Lei Zhenglong, deputy director of the disease prevention and control bureau, said that to enhance the capacity of medical workers was now the top priority for the initiative.At present, effective disease prevention work usually contradicts the financial interests of clinical doctors, analysts said.A respiratory disease doctor surnamed He with the Peking University People's Hospital said that he came under pressure from the hospital authorities when the number of inpatients declined due to his efforts to inform his patients about chronic disease prevention.