منابع مشابه
Presidents who value science.
www.sciencemag.org SCIENCE VOL 323 13 FEBRUARY 2009 843 COVER An image of Mare Moscoviense on the lunar farside, taken by the Terrain Camera aboard the SELENE (Kaguya) spacecraft on 17 January 2008. Crater frequency distributions derived from such images yield ages of about 2.5 billion years for several volcanic deposits in this mare, indicating that volcanism on the lunar farside lasted about ...
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Diabetes is a common and serious condition which results in premature mortality, significant morbidity and has a considerable economic impact. A diagnosis of diabetes has important implications for the individual. It not only commits them to a lifetime of treatment but also may affect work opportunities and social interactions, underlining the importance of making a correct diagnosis. While rel...
متن کاملWho Tweets about Science?
Twitter is currently one of the primary venues for online information dissemination. Although its detractors portray it as nothing more than an exercise in narcissism and banality, Twitter is also used to share news stories and other information that may be of interest to a person’s followers. The current study sampled tweeters who had tweeted at least one link to an article in one of four lead...
متن کاملUnderwriting the presidents.
The United States has had 43 presidents. We examined whether they survive significantly longer or shorter than their contemporaries. We found that survival was better for presidents elected in the 1789-1841 and 1933-2001 periods (SMRs of 0.7 and 0.6, respectively), but worse for those elected in 1845-1929 (SMR = 2.9). We also found increased mortality during the years lived in office (SMR = 1.4...
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ژورنال
عنوان ژورنال: Science
سال: 2009
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.1171006