6740期

最新文章

• Isolated atoms, but entangled AI翻译
  作者：Pupillo, Guido; Brennen, Gavin
  作者单位：Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Centre National de la Recherche Scientifique (CNRS); CNRS - Institute of Chemistry (INC); Macquarie University
• In-cell architecture of the mitochondrial respiratory chain AI翻译
  作者：Waltz, Florent; Righetto, Ricardo D.; Lamm, Lorenz; Salinas-Giege, Thalia; Kelley, Ron; Zhang, Xianjun; Obr, Martin; Khavnekar, Sagar; Kotecha, Abhay; Engel, Benjamin D.
  作者单位：University of Basel; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Centre National de la Recherche Scientifique (CNRS); Thermo Fisher Scientific; Max Planck Society; St Jude Children's Research Hospital
  摘要：Mitochondria regenerate adenosine triphosphate (ATP) through oxidative phosphorylation. This process is carried out by five membrane-bound complexes collectively known as the respiratory chain, working in concert to transfer electrons and pump protons. The precise organization of these complexes in native cells is debated. We used in situ cryo-electron tomography to visualize the native structures and organization of several major mitochondrial complexes in Chlamydomonas reinhardtii cells. ATP...
• Social and environmental impacts of war in Syria AI翻译
  作者：Jaafar, Abd Al Karim; Rodriguez-Seijo, Andres
  作者单位：Damascus University; Universidade de Vigo
• Unifying spatial scaling laws of biodiversity and ecosystem stability AI翻译
  作者：Liang, Maowei; Yang, Qi; Chase, Jonathan M.; Isbell, Forest; Loreau, Michel; Schmid, Bernhard; Seabloom, Eric W.; Tilman, David; Wang, Shaopeng
  作者单位：Peking University; Peking University; University of Minnesota System; German Research Foundation (DFG); German Centre for Integrative Biodiversity Research (iDiv); Martin Luther University Halle Wittenberg; University of Minnesota System; University of Minnesota Twin Cities; Centre National de la Recherche Scientifique (CNRS); University of Zurich; University of California System; University of California Santa Barbara
  摘要：While both species richness and ecosystem stability increase with area, how these scaling patterns are linked remains unclear. Our theoretical and empirical analyses of plant and fish communities show that the spatial scaling of ecosystem stability is determined primarily by the scaling of species asynchrony, which is in turn driven by the scaling of species richness. In wetter regions, plant species richness and ecosystem stability both exhibit faster accumulation with area, implying potentia...
• SOCIAL SCIENCE US study of Scandinavian prison model expands AI翻译
  作者：Couzin-Frankel, Jennifer
• COP 30: Brazilian policies must change AI翻译
  作者：Fearnside, Philip M.; Filho, Walter Leal
  作者单位：Manchester Metropolitan University; Hochschule Angewandte Wissenschaft Hamburg
• Recent gains in global terrestrial carbon stocks are mostly stored in nonliving pools AI翻译
  作者：Bar-On, Yinon M.; Li, Xiaojun; O'Sullivan, Michael; Wigneron, Jean-Pierre; Sitch, Stephen; Ciais, Philippe; Frankenberg, Christian; Fischer, Woodward W.
  作者单位：California Institute of Technology; Universite de Bordeaux; INRAE; Southwest Jiaotong University; University of Exeter; CEA; Universite Paris Saclay; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); California Institute of Technology
  摘要：Terrestrial sequestration of carbon has mitigated approximate to 30% of anthropogenic carbon emissions. However, its distribution across different pools, live or dead biomass and soil and sedimentary organic carbon, remains uncertain. Analyzing global observational datasets of changes in terrestrial carbon pools, we found that approximate to 35 +/- 14 gigatons of carbon (GtC) have been sequestered on land between 1992 and 2019, whereas live biomass changed by approximate to 1 +/- 7 GtC. Global...
• Error-detected quantum operations with neutral atoms mediated by an optical cavity AI翻译
  作者：Grinkemeyer, Brandon; Guardado-Sanchez, Elmer; Dimitrova, Ivana; Shchepanovich, Danilo; Mandopoulou, G. Eirini; Borregaard, Johannes; Vuletic, Vladan; Lukin, Mikhail D.
  作者单位：Harvard University; Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT)
  摘要：Neutral-atom quantum processors are a promising platform for large-scale quantum computing. Integrating them with optical cavities enables fast nondestructive qubit readout and access to fast remote entanglement generation for quantum networking. In this work, we introduce a platform for coupling single atoms in optical tweezers to a Fabry-Perot fiber cavity. Leveraging the strong atom-cavity coupling, we demonstrated fast qubit-state readout with 99.960(-24)(+14)% fidelity and two methods for...
• Poland's border policies imperil river ecosystems AI翻译
  作者：Kitowski, Ignacy; Sujak, Agnieszka; Drygas, Mariusz
  作者单位：Poznan University of Life Sciences
• Regulatory T cells constrain T cells of shared specificity to enforce tolerance during infection AI翻译
  作者：Klawon, David E. J.; Pagane, Nicole; Walker, Matthew T.; Ganci, Nicole K.; Miller, Christine H.; Gai, Eric; Rodriguez, Donald M.; Ryan-Payseur, Bridgett K.; Duncombe, Ryan K.; Adams, Erin J.; Maienschein-Cline, Mark; Freitag, Nancy E.; Germain, Ronald N.; Wong, Harikesh S.; Savage, Peter A.
  作者单位：University of Chicago; Massachusetts Institute of Technology (MIT); University of Chicago; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Chicago; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; National Institutes of Health (NIH) - USA; NIH National Institute of Allergy & Infectious Diseases (NIAID); Massachusetts Institute of Technology (MIT)
  摘要：During infections, CD4(+) Foxp3(+) regulatory T (T-reg) cells must control autoreactive CD4(+) conventional T (T-conv) cell responses against self-peptide antigens while permitting those against pathogen-derived nonself peptides. We defined the basis of this selectivity using mice in which T-reg cells reactive to a single prostate-specific self-peptide were selectively depleted. We found that self-peptide-specific T-reg cells were dispensable for the control of T-conv cells of matched specific...