2025

最新文章

• 'Expansion microscopy' turns ten: how a tissue-swelling method brought super-resolution imaging to the masses AI翻译
  作者：Dolgin, Elie
• Transducing chemical energy through catalysis by an artificial molecular motor AI翻译
  作者：Wang, Peng-Lai; Borsley, Stefan; Power, Martin J.; Cavasso, Alessandro; Giuseppone, Nicolas; Leigh, David A.
  作者单位：University of Manchester; East China Normal University; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Institut Universitaire de France
  摘要：Cells display a range of mechanical activities generated by motor proteins powered through catalysis1. This raises the fundamental question of how the acceleration of a chemical reaction can enable the energy released from that reaction to be transduced (and, consequently, work to be done) by a molecular catalyst2, 3, 4, 5, 6-7. Here we demonstrate the molecular-level transduction of chemical energy to mechanical force8 in the form of the powered contraction and powered re-expansion of a cross...
• Photocatalytic C-F bond activation in small molecules and polyfluoroalkyl substances AI翻译
  作者：Liu, Xin; Sau, Arindam; Green, Alexander R.; Popescu, Mihai V.; Pompetti, Nicholas F.; Li, Yingzi; Zhao, Yucheng; Paton, Robert S.; Damrauer, Niels H.; Miyake, Garret M.
  作者单位：Colorado State University System; Colorado State University Fort Collins; University of Colorado System; University of Colorado Boulder; University of Colorado System; University of Colorado Boulder
  摘要：Organic halides are highly useful compounds in chemical synthesis, in which the halide serves as a versatile functional group for elimination, substitution and cross-coupling reactions with transition metals or photocatalysis1, 2-3. However, the activation of carbon-fluorine (C-F) bonds-the most commercially abundant organohalide and found in polyfluoroalkyl substances (PFAS), or 'forever chemicals'-is much rarer. Current approaches based on photoredox chemistry for the activation of small-mol...
• Striving for open-source and equitable speech-to-speech translation AI翻译
  作者：Alumae, Tanel
  作者单位：Tallinn University of Technology
• Physicists describe exotic 'paraparticles' that defy categorization AI翻译
  作者：Castelvecchi, Davide
• Air pollution and brain damage: what the science says AI翻译
  作者：Drew, Liam
• How science recruiters and job applicants can get on the same page AI翻译
  作者：[Anonymous]
• How the brain cleans itself during deep sleep AI翻译
  作者：[Anonymous]
• Sulfide-rich continental roots at cratonic margins formed by carbonated melts AI翻译
  作者：Chen, Chunfei; Forster, Michael W.; Shcheka, Svyatoslav S.; Ezad, Isra S.; Shea, Joshua J.; Liu, Yongsheng; Jacob, Dorrit E.; Foley, Stephen F.
  作者单位：China University of Geosciences; Macquarie University; Australian National University; University of Western Australia; University of Cambridge; Yangtze University
  摘要：The cratonic crust contains abundant mineral deposits of metals such as gold, copper and rare earths1, 2, 3, 4-5 and is underlain by a thick mantle lithosphere rich in the volatiles carbon, sulfur and water6, 7-8. Although volatiles are known to be key components in metallogenesis9, how and where they are distributed in the cratonic lithosphere mantle and their role in the initial enrichment of metals have not been sufficiently explored. Here we compile sulfur and copper contents of global cra...
• Social state alters vision using three circuit mechanisms in Drosophila AI翻译
  作者：Schretter, Catherine E.; Sten, Tom Hindmarsh; Klapoetke, Nathan; Shao, Mei; Nern, Aljoscha; Dreher, Marisa; Bushey, Daniel; Robie, Alice A.; Taylor, Adam L.; Branson, Kristin; Otopalik, Adriane; Ruta, Vanessa; Rubin, Gerald M.
  作者单位：Howard Hughes Medical Institute; Rockefeller University; Stanford University
  摘要：Animals are often bombarded with visual information and must prioritize specific visual features based on their current needs. The neuronal circuits that detect and relay visual features have been well studied1-8. Much less is known about how an animal adjusts its visual attention as its goals or environmental conditions change. During social behaviours, flies need to focus on nearby flies9-11. Here we study how the flow of visual information is altered when female Drosophila enter an aggressi...