Catálogo de publicaciones - revistas

<jats:p>A protocol that allows users and operators of a quantum computer to avoid revealing their methods has implications for the need of classical ideas in quantum mechanics.</jats:p>

<jats:p>A suite of space-based observatories has captured the details of a comet as it disintegrates in the solar corona.</jats:p>

<jats:p>Citizen science projects have the potential to transform earthquake science if data quality standards are maintained.</jats:p>

<jats:p>How can a centromere relocate to a new chromosomal position?</jats:p>

<jats:p>A single-molecule approach reveals coherence in long trajectories of enzyme conformational dynamics.</jats:p>

<jats:p>A biologist's innovative theoretical syntheses provided the intellectual scaffolding for endosymbiotic theory, a cornerstone of mainstream evolutionary biology.</jats:p>

<jats:title>Quantum Blindness</jats:title> <jats:p> While quantum computers offer speed advantages over their classical counterparts, the technological challenges facing their eventual realization suggest that they will need to be located in specialized facilities. Thus, interaction would then need to be on a quantum client:quantum server basis. <jats:bold> Barz <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="303" related-article-type="in-this-issue" vol="335" xlink:href="10.1126/science.1214707">303</jats:related-article> ; see the Perspective by <jats:bold> <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" issue="6066" page="294" related-article-type="in-this-issue" vol="335" xlink:href="10.1126/science.1216922">Vedral</jats:related-article> </jats:bold> ) implemented a proof-of-principle protocol that illustrates complete security in such a setup—for both the client and the server. In this blind quantum computing protocol, the client maintains the security of their data and the specifics of the calculation they want to perform, and the server cannot access the data or calculation of the client. </jats:p>

<jats:title>Sourced from Seaweed</jats:title> <jats:p> Using seaweed as a raw material for biofuels has received relatively little attention, in part because their primary sugar constituent, alginate, is not readily fermented by industrially tractable microbes. <jats:bold> Wargacki <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="308" related-article-type="in-this-issue" vol="335" xlink:href="10.1126/science.1214547">308</jats:related-article> ; see the cover) now demonstrate that metabolically engineered bacteria can degrade seaweed and subsequently ferment the sugars into ethanol at laboratory scale. </jats:p>

<jats:title>Extending the Range</jats:title> <jats:p> Ultracold atomic gases are attractive for quantum simulations of condensed-matter systems because of their tunability; however, while the strength of interactions can be tuned, their range is effectively zero. <jats:bold> Williams <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="314" related-article-type="in-this-issue" vol="335" xlink:href="10.1126/science.1212652">314</jats:related-article> , published online 8 December) used a pair of Raman lasers to modify the interaction between two colliding Bose-Einstein condensates to include beyond– <jats:italic>s</jats:italic> -wave ( <jats:italic>d</jats:italic> - and <jats:italic>g</jats:italic> -wave) contributions. This technique should enable the simulation of more complicated solid-state systems, including those supporting exotic superfluidity. </jats:p>

<jats:title>Tracking Reaction Surfaces</jats:title> <jats:p> Gold becomes a remarkably active catalyst for CO oxidation when it is dispersed as nanoparticles on the surface of reducible metal oxides such as ceria, so much so that the reaction proceeds at room temperature. <jats:bold> Yoshida <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="317" related-article-type="in-this-issue" vol="335" xlink:href="10.1126/science.1213194">317</jats:related-article> ) used an aberration-corrected, environmental transmission electron microscope to follow the changes in both ceria-supported gold nanoparticles and the adsorbed species for this reaction. </jats:p>