6681期

最新文章

• Total organic carbon measurements reveal major gaps in petrochemical emissions reporting AI翻译
  作者：He, Megan; Ditto, Jenna C.; Gardner, Lexie; Machesky, Jo; Hass-Mitchell, Tori N.; Chen, Christina; Khare, Peeyush; Sahin, Bugra; Fortner, John D.; Plata, Desiree L.; Drollette, Brian D.; Hayden, Katherine L.; Wentzell, Jeremy J. B.; Mittermeier, Richard L.; Leithead, Amy; Lee, Patrick; Darlington, Andrea; Wren, Sumi N.; Zhang, Junhua; Wolde, Mengistu; Moussa, Samar G.; Li, Shao-Meng; Liggio, John; Gentner, Drew R.
  作者单位：Yale University; Environment & Climate Change Canada; National Research Council Canada; Peking University; Harvard University; Washington University (WUSTL); Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Massachusetts Institute of Technology (MIT)
  摘要：Anthropogenic organic carbon emissions reporting has been largely limited to subsets of chemically speciated volatile organic compounds. However, new aircraft-based measurements revealed total gas-phase organic carbon emissions that exceed oil sands industry-reported values by 1900% to over 6300%, the bulk of which was due to unaccounted-for intermediate-volatility and semivolatile organic compounds. Measured facility-wide emissions represented approximately 1% of extracted petroleum, resultin...
• Record-setting deep reef off US coast fully mapped AI翻译
  作者：[Anonymous]
• Retractions lag for wave of suspect papers AI翻译
  作者：Brainard, Jeffrey
  摘要：Years after whistleblowers questioned nearly 300 papers, journals are slow to respond
• Changing fitness effects of mutations through long-term bacterial evolution AI翻译
  作者：Couce, Alejandro; Limdi, Anurag; Magnan, Melanie; Owen, Sian V.; Herren, Cristina M.; Lenski, Richard E.; Tenaillon, Olivier; Baym, Michael
  作者单位：Institut National de la Sante et de la Recherche Medicale (Inserm); Universite Paris Cite; Institut National de la Sante et de la Recherche Medicale (Inserm); Universite Paris Cite; Imperial College London; Universidad Politecnica de Madrid; Harvard University; Harvard Medical School; Harvard University; Harvard Medical School; Northeastern University; Michigan State University; Michigan State University; Institut National de la Sante et de la Recherche Medicale (Inserm); Universite Paris Cite
  摘要：The distribution of fitness effects of new mutations shapes evolution, but it is challenging to observe how it changes as organisms adapt. Using Escherichia coli lineages spanning 50,000 generations of evolution, we quantify the fitness effects of insertion mutations in every gene. Macroscopically, the fraction of deleterious mutations changed little over time whereas the beneficial tail declined sharply, approaching an exponential distribution. Microscopically, changes in individual gene esse...
• Accelerated evolution of chosen genes AI翻译
  作者：Williams, Rory L.; Liu, Chang C.
  作者单位：University of California System; University of California Irvine; University of California System; University of California Irvine
  摘要：Orthogonal replication enables rapid continuous biomolecular evolution in Escherichia coli
• US agency powers go on trial AI翻译
  作者：Servick, Kelly; Chakradhar, Shraddha
• Europe divided on proposal to allow wolf culls AI翻译
  作者：Tomma, Gennaro
  摘要：Farmers argue that downgrading wolf protection will spare livestock-but some scientists say culls could backfire
• Cancer studies face retractions AI翻译
  作者：[Anonymous]
• Tiny fossils upend timeline of multicellular life AI翻译
  作者：Pennisi, Elizabeth
  摘要：Eukaryotes organized into multicellular forms 1.6 billion years ago
• 2023 AAAS Kavli Science Journalism Award winners AI翻译
  作者：Lane, Earl
  摘要：International awards program drew entries from a record 74 nations International awards program drew entries from a record 74 nations