Catálogo de publicaciones - revistas

<jats:p> Andreasen and Sharma raise concerns about the neodymium-142 data and age that we reported for rocks from the Nuvvuagittuq greenstone belt in Quebec, Canada. We agree that the issue of accurate mass fractionation correction is important, but stand by our discussion of this issue in our original report and our conclusion that the variation in <jats:sup>142</jats:sup> Nd/ <jats:sup>144</jats:sup> Nd ratios reflects the decay of <jats:sup>146</jats:sup> Sm caused by Sm-Nd fractionation within 300 million years of Earth’s formation. </jats:p>

<jats:p> O'Neil <jats:italic>et al</jats:italic> . (Reports, 26 September 2008, p. 1828) presented neodymium-142 data for rocks from northern Quebec, Canada, and suggested that these rocks may represent the oldest preserved crustal section on Earth. We argue that the age of the rocks is based on a spurious correlation between rocks that are probably not co-genetic and negative <jats:sup>142</jats:sup> Nd anomalies that may be the result of an analytical artifact. </jats:p>

<jats:p>Gilbert and Epel focus on embryonic and larval development of metazoans to explore where "embryology meets the real world."</jats:p>

<jats:p>Weaving her narrative around a series of imagined face-to-face dialogues, Gilder offers an account of the development of quantum physics that pays particular attention to developments through the second half of the 20th century.</jats:p>

<jats:p> A <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="uri" xlink:href="http://www.sciencemag.org/feature/data/books/brl5938.dtl">listing of books received</jats:ext-link> at <jats:italic>Science</jats:italic> during the week ended 10 July 2009. </jats:p>

<jats:p>Exploiting multiple feedstocks, under new policies and accounting rules, to balance biofuel production, food security, and greenhouse-gas reduction.</jats:p>

<jats:p>Oligonucleotides that target aggregates of RNA and protein show potential for treating myotonic dystrophy.</jats:p>

<jats:p>A numerical modeling study questions the validity of a key paradigm in rapid climate change studies.</jats:p>

<jats:p>Detailed analyses of population demographics and viral diversity should help predict the impact of childhood vaccination for endemic viruses such as rotavirus.</jats:p>