Science

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• Going back home AI翻译
  作者：Allen, Raymond L.
  作者单位：University of Wisconsin System; University of Wisconsin Madison
• Early universe's 'little red dots' may be black hole stars AI翻译
  作者：Clery, Daniel
• Silencing mitochondrial gene expression in living cells AI翻译
  作者：Cruz-Zaragoza, Luis Daniel; Dahal, Drishan; Koschel, Mats; Boshnakovska, Angela; Zheenbekova, Aiturgan; Yilmaz, Mehmet; Morgenstern, Marcel; Dohrke, Jan-Niklas; Bender, Julian; Valpadashi, Anusha; Henningfeld, Kristine A.; Oeljeklaus, Silke; Kremer, Laura Sophie; Breuer, Mirjam; Urbach, Oliver; Dennerlein, Sven; Lidschreiber, Michael; Jakobs, Stefan; Warscheid, Bettina; Rehling, Peter
  作者单位：University of Gottingen; UNIVERSITY GOTTINGEN HOSPITAL; University of Wurzburg; University of Gottingen; UNIVERSITY GOTTINGEN HOSPITAL; University of Gottingen
  摘要：Mitochondria fulfill central functions in metabolism and energy supply. They express their own genome, which encodes key subunits of the oxidative phosphorylation system. However, the central mechanisms underlying mitochondrial gene expression remain enigmatic, and a lack of suitable technologies to target mitochondrial protein synthesis in cells has limited experimental access. We silenced the translation of specific mitochondrial mRNAs in living human cells by delivering synthetic peptide-mo...
• Spectroscopy of elementary excitations from quench dynamics in a dipolar XY Rydberg simulator AI翻译
  作者：Chen, Cheng; Emperauger, Gabriel; Bornet, Guillaume; Caleca, Filippo; Gely, Bastien; Bintz, Marcus; Chatterjee, Shubhayu; Liu, Vincent; Barredo, Daniel; Yao, Norman Y.; Lahaye, Thierry; Mezzacapo, Fabio; Roscilde, Tommaso; Browaeys, Antoine
  作者单位：Institut Polytechnique de Paris; Ecole Polytechnique; Centre National de la Recherche Scientifique (CNRS); Universite Paris Saclay; Ecole Normale Superieure de Lyon (ENS de LYON); Centre National de la Recherche Scientifique (CNRS); Universite Paris Cite; Harvard University; Carnegie Mellon University; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Centro de Investigacion en Nanomateriales y Nanotecnologia (CINN)
  摘要：The nature and spectrum of elementary excitations are defining features of a many-body system. In this study, we used a Rydberg quantum simulator to demonstrate a form of spectroscopy, called quench spectroscopy, that probes these low-energy excitations. We illustrated the method on a two-dimensional simulation of the spin-1/2 dipolar XY model. Through microscopic measurements of the spatial spin correlation dynamics following a quench, we extracted the dispersion relation of the elementary ex...
• Safeguarding US-China climate cooperation AI翻译
  作者：Dai, Fan
  作者单位：Harvard University; Harvard University
• Governing novel climate interventions in rapidly changing oceans AI翻译
  作者：Morrison, Tiffany H.; Pecl, Gretta; Nash, Kirsty L.; Hughes, Terry; Cohen, Philippa J.; Layton, Cayne; Brown, Katrina; Lovelock, Catherine E.; Lemos, Maria Carmen; Adger, W. Neil; Lawless, Sarah; Muir, Bob; Gurney, Georgina G.; Mcleod, Elizabeth; Mills, Katherine E.; Fairweather-Morrison, Imani; Phillips, Michael; Sullivan, Andrew; Hilmi, Nathalie; Holmes-McHugh, Lucy; Pradhan, Sisir; Streit, Robert; Niles, Navam; Ogier, Emily
  作者单位：University of Melbourne; James Cook University; Wageningen University & Research; University of Tasmania; CGIAR; Worldfish; University of Tasmania; University of Exeter; University of Queensland; University of Michigan System; University of Michigan; Australian Institute of Marine Science; James Cook University; University of Tasmania; Nature Conservancy; Gulf of Maine Research Institute; University of Waterloo
  摘要：Marine systems are rapidly changing in response to global heating. The scale and intensity of change are triggering a host of novel interventions to sustain oceans and ocean-dependent societies. However, the pace of new interventions is outstripping capacity to prevent unintended consequences because governance systems to ensure responsible transformation of marine systems are not yet in place. Responsible transformation entails transitioning marine systems to sustainable, equitable, and adapt...
• Genomic convergence in hibernating mammals elucidates the genetics of metabolic regulation in the hypothalamus AI翻译
  作者：Ferris, Elliott; Gonzalez Murcia, Josue D.; Rodriguez, Adriana Cristina; Steinwand, Susan; Stacher Horndli, Cornelia; Traenkner, Dimitri; Maldonado-Catala, Pablo J.; Gregg, Christopher
  作者单位：Utah System of Higher Education; University of Utah; Utah System of Higher Education; University of Utah; Utah System of Higher Education; University of Utah
  摘要：Extreme metabolic adaptations can elucidate genetic programs that govern mammalian metabolism. Here, we used convergent evolutionary changes in hibernating lineages to define conserved cis-regulatory elements (CREs) and metabolic programs. We characterized mouse hypothalamus gene expression and chromatin dynamics across fed, fasted, and refed states and then used comparative genomics of hibernating versus nonhibernating lineages to identify cis elements with convergent changes in hibernators. ...
• Dust-driven droplet freezing explains cloud-top phase in the northern extratropics AI翻译
  作者：Villanueva, D.; Stengel, M.; Hoose, C.; Bruno, O.; Jeggle, K.; Ansmann, A.; Lohmann, U.
  作者单位：Swiss Federal Institutes of Technology Domain; ETH Zurich; Deutscher Wetterdienst; Helmholtz Association; Karlsruhe Institute of Technology; Leibniz Association; Leibniz Institut fur Tropospharenforschung (TROPOS)
  摘要：Clouds between -39 degrees and 0 degrees C can be topped by a liquid or ice layer, which affects their radiative forcing and precipitation. The cloud-top ice-to-total frequency (ITF) quantifies the occurrence of clouds with an ice top relative to total cloud occurrence, but the factors controlling ITF are poorly understood. Using 35 years of satellite data, we show that in the Northern Hemisphere, between -15 degrees and -30 degrees C, dust aerosol is strongly correlated with ITF in both time ...
• Entangling molecules with a tiny motor AI翻译
  作者：Beves, Jonathon
  作者单位：University of New South Wales Sydney
• The mind of a predatory worm AI翻译
  作者：Ahmed, Maria; Hiesinger, P. Robin
  作者单位：Free University of Berlin