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BEIJING, March 11 (Xinhuanet) --Women who have a cup or more of coffee everyday may reduce their risk of stroke by as much as 25 percent, according to a new study in the Journal Stroke Thursday. This study, led by Swedish researcher Susanna Larsson of the Karolinska Institute in Stockholm, followed more than 34,000 Swedish women aged 49 to 83 who were free of heart disease. After 10-year of follow-up, there were 1,680 strokes, and the study found that those who drank at least one cup of coffee each day had a 22 to 25 percent lowered risk of stroke, compared with women who drank less.The study further suggested coffee can help prevent cognitive decline and can boost vision and heart health. It is also related to a reduced risk of liver cancer."We used to worry that (coffee) raises blood pressure and causes increased heart rate, but it appears to be less risky than we thought," said physician Claudette Brooks, spokesperson for the American Stroke Association. Now, exactly what it is about coffee that may lower stroke risk is unknown. But the researchers speculated that coffee might reduce inflammation, lower oxidative stress and help make the body more responsive to insulin.However, some experts kept skeptical about the real impact coffee would have on reducing the incidence of stroke."The problem with this type of study is that there are too many factors unaccounted for and association does not prove causality," Dr Larry B. Goldstein, director of the Duke Stroke Center at Duke University Medical Center said."Subjects were asked about their past coffee consumption in a questionnaire and then followed over time. There is no way to know if they changed their behavior," Goldstein added.In any case, the good news for coffee junkies is that at least drinking coffee don't increase women's risk of stroke.

BEIJING, Feb. 20 (Xinhua) -- China's railways handled 7.13 million passengers Saturday, setting a new one day record, the Ministry of Railways (MOR) said Sunday.The figure was 16 percent higher year on year, the MOR said.Chinese railways are witnessing a new wave of travel after the Lantern Festival celebration (the 15th day of the first month in the Lunar New Year) Thursday, which is considered a symbolic ending of the festival season.China's Spring Festival fell on Feb. 3 this year.The busy Spring Festival transportation season runs for 40 days and is calculated in two phases: 15 days before the Spring Festival and 25 days after the Spring Festival.

BEIJING, Feb. 14 (Xinhuanet) -- The exchange rate against the US dollar is currently at an appropriate level but could fluctuate in the future, Yi Gang, vice-governor of the central bank and head of the State Administration of Foreign Exchange, said on Sunday."In the future, as markets fluctuate and labor productivity changes, the rate will certainly show some fluctuation," he said at a seminar. Last Thursday, the yuan's central parity rate rose to a record high of 6.5849 against the US dollar, after rising for three consecutive trading days, before declining to 6.5952 on Friday.The yuan has appreciated about 3.6 percent against the dollar since mid-June. A report from the US Treasury said earlier that on an inflation-adjusted basis, the appreciation was even higher, at an annual rate of more than 10 percent.US Federal Reserve Chairman Ben Bernanke said last Wednesday that China's recent measures to control inflation by raising interest rates is "surprising" and urged Beijing to let its currency rise in value.Currently the exchange rate is still underestimated by no more than 10 percent, said Lu Mai, secretary-general of the China Development Research Foundation (CDRF).The resilience of exporters to the rising yuan is stronger than previously estimated, which helps to pave the way for more currency reform to liberalize the yuan, he said.In 2007 and 2008, the Chinese currency rose by 7 percent annually against the US dollar, but China's GDP only declined by 0.28 percentage points, with inflation down by 0.42 points and workers' wages up by 0.07 points, according to CDRF research."The figures showed that progressive currency reform since July 2005 was successful, and the government should accelerate the reform and further free the yuan in the next five years to promote healthy, long-term economic development," Lu said.China should keep the proportion of its trade surplus to GDP within 5 percent, and avoid further increasing its huge foreign exchange reserves to allow the currency to settle at a balanced level, he said.China's foreign reserves rose to a record .85 trillion at the end of last year, an 18.7 percent increase year-on-year, according to statistics from the People's Bank of China, the central bank.Yi said he took note of the CDRF findings, but emphasized that further moves depended on both the domestic and international economic situation and appropriate timing.Lu Feng, an economist at Peking University, said now is the right time to deepen currency reform and let the yuan trade at a higher price as inflation is rising.Analysts have predicted that the yuan will appreciate this year as inflation may see the government opt for a rising yuan to lower the cost of purchasing international commodities.Lian Ping, chief economist at the Bank of Communications, predicted the yuan would rise by 5 to 7 percent in 2011.

WASHINGTON, May 20 (Xinhua) -- Two U.S. astronauts conducted the first of four spacewalks for space shuttle Endeavour's STS-134 mission on Friday morning, the U.S. National Aeronautics and Space Administration (NASA) said.According to the U.S. space agency, Endeavour's mission specialists Andrew Feustel and Greg Chamitoff completed the six-hour, 19-minute spacewalk at 9:29 a.m. EDT (1329 GMT). They successfully installed antennas for the External Wireless Communication system, routing cables, setting up the antenna, installing handrails, and connecting power cables.Because of a carbon dioxide sensor failure in Chamitoff's spacesuit, flight controllers limited his spacewalk time to about six hours 20 minutes, 10 minutes less than the planned six hours and 30 minutes. There was no indication his suit's carbon dioxide levels would rise. However, they deferred tasks to remove a micrometeoroid debris shield to access and attach some of the connection points.This was the 245th spacewalk conducted by U.S. astronauts. It was Feustel's fourth spacewalk for a total time of 27 hours and 17 minutes, and Chamitoff's first.Endeavour lifted off on Monday morning from Kennedy Space Center in Florida, to deliver to the International Space Station a 2-billion-dollar, multinational particle detector known as the Alpha Magnetic Spectrometer (AMS).AMS, a particle physics detector, is designed to search for various types of unusual matter by measuring cosmic rays. Its experiments are designed to help researchers study the formation of the universe and search for evidence of dark matter, strange matter and antimatter.

Google chairman Eric Schmidt has promised that the firm will simplify the process by which Android phone users agree to share their data.It follows questions in the US Senate about how much location information is stored by mobile handsets.Speaking in the UK at a conference on privacy, he also revealed that Google plans to offer web users more control over their online profile.Mr Schmidt insisted that the company took the matter "very seriously".He told attendees at the Big Tent debate in Hertfordshire that his firm was working on "a series of projects" aimed at increasing transparency.Those include a revised Google Dashboard, where users can see what data they have shared with the search giant."It is worth stressing that we can only do this with data you have shared with Google. We can't be a vacuum-cleaner for the whole internet," he said.Mr Schmidt stressed that Google was on the side of consumers when it came to privacy. "In general we take the position that you own your data and should be able to opt in or out of a service," he said.But he added that if users gave consent for sharing data, it would help Google improve its services."If you choose to give us that information we can do a better job. If we know a little bit more about you we can offer better targeted search," he explained.Super injunctions revealed A recent hearing in the US Senate quizzed Google on the amount of data stored on Android handsets. The company argued that it allows people to opt out of location-based services.But Mr Schmidt conceded that the terms and conditions whereby users sign up to services needs to be simplified. "We intent to do that," he said.He predicted that such services would be more heavily regulated in the future.During a lively debate on the issue of privacy, it was revealed to the Big Tent audience, alongside several names of current super-injunction holders, that more data has been collected in the last seven years than in the whole of previous human history.

来源：资阳报