Catálogo de publicaciones - revistas

<jats:p>Seventy-five contemporary artists offer their visual interpretations of current thinking on unanswered questions in science.</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/site/feature/data/books/brl6119.xhtml">listing of books received</jats:ext-link> at <jats:italic>Science</jats:italic> during the week ending 25 January 2013. </jats:p>

<jats:p>Gaps in knowledge must be identified, capacities developed, and research translated into policy and practice.</jats:p>

<jats:p> Intratumor heterogeneity is a major obstacle in successfully eradicating tumors. <jats:named-content content-type="related-content"> [Also see Research Article by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="543" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1227670"> Kreso <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:p> Use of a diamond-based nanomagnetometer reduces the detection volume of MRI to the level of individual protein molecules. <jats:named-content content-type="related-content"> [Also see Reports by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="557" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1231540"> Mamin <jats:italic>et al.</jats:italic> </jats:related-article> and <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="561" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1231675"> Staudacher <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:p> A link between the gut microbiota and conditions of undernutrition point to possible therapeutic interventions. <jats:named-content content-type="related-content"> [Also see Research Article by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="548" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1229000"> Smith <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:p> An atom interferometer and an optical frequency comb measure the Compton frequency of a cesium atom, creating a "clock" that weighs atoms. <jats:named-content content-type="related-content"> [Also see Report by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="554" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1230767"> Lan <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:p> Enhanced levels of anaerobic respiration processes may explain oscillations in Earth's carbon cycle. <jats:named-content content-type="related-content"> [Also see Research Article by <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6119" page="540" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1229578"> Schrag <jats:italic>et al.</jats:italic> </jats:related-article> ] </jats:named-content> </jats:p>

<jats:title>Exploiting Carbon Nanotubes</jats:title> <jats:p> Individual defect-free carbon nanotubes can have exceptional mechanical, thermal, and electrical properties, which has led to speculation on a wide range of potential applications. However, challenges in growing large quantities of pure nanotubes, and for some applications tubes of only one type, have limited their widespread use. <jats:bold> De Volder <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="535" related-article-type="in-this-issue" vol="339" xlink:href="10.1126/science.1222453">535</jats:related-article> ) review the efforts that have been made to scale up carbon nanotube production and discuss a number of applications where enhanced materials have made use of carbon nanotubes. </jats:p>