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• Direct synthesis and chemical vapor deposition of 2D carbide and nitride MXenes AI翻译
  作者：Wang, Di; Zhou, Chenkun; Filatov, Alexander S.; Cho, Wooje; Lagunas, Francisco; Wang, Mingzhan; Vaikuntanathan, Suriyanarayanan; Liu, Chong; Klie, Robert F.; Talapin, Dmitri V.
  作者单位：University of Chicago; University of Chicago; University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital; University of Chicago; United States Department of Energy (DOE); Argonne National Laboratory
  摘要：Two-dimensional transition-metal carbides and nitrides (MXenes) are a large family of materials actively studied for various applications, especially in the field of energy storage. MXenes are commonly synthesized by etching the layered ternary compounds, called MAX phases. We demonstrate a direct synthetic route for scalable and atom-economic synthesis of MXenes, including compounds that have not been synthesized from MAX phases, by the reactions of metals and metal halides with graphite, met...
• A direct and clean route to MXenes AI翻译
  作者：Robertson, Daniel D.; Tolbert, Sarah H.
  作者单位：University of California System; University of California Los Angeles; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles
• Structure and mechanism of the plant RNA polymerase V AI翻译
  作者：Xie, Guohui; Du, Xuan; Hu, Hongmiao; Li, Sisi; Cao, Xiaofeng; Jacobsen, Steven E.; Du, Jiamu
  作者单位：Southern University of Science & Technology; Shenzhen University; Chinese Academy of Sciences; Institute of Genetics & Developmental Biology, CAS; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles; Howard Hughes Medical Institute
  摘要：In addition to the conserved RNA polymerases Ito III (Pols Ito III) in eukaryotes, two atypical polymerases, Pols IV and V, specifically produce noncoding RNA in the RNA-directed DNA methylation pathway in plants. Here, we report on the structures of cauliflower Pol V in the free and elongation conformations. A conserved tyrosine residue of NRPE2 stacks with a double -stranded DNA branch of the transcription bubble to potentially attenuate elongation by inducing transcription stalling. The non...
• COVID-19 New Long Covid cases decline with Omicron AI翻译
  作者：Couzin-Frankel, Jennifer
• Health hints in Beethoven's hair AI翻译
  作者：[Anonymous]
• Planting trees for papers AI翻译
  作者：[Anonymous]
• A global approach for natural history museum collections AI翻译
  作者：Johnson, Kirk R.; Owens, Ian F. P.
  作者单位：Smithsonian Institution; Cornell University
• S. Korea, Japan reup science ties AI翻译
  作者：[Anonymous]
• Beyond protected areas for koala conservation AI翻译
  作者：Williams, Brooke A.; Morgans, Courtney; Rhodes, Jonathan R.
  作者单位：University of Queensland; University of Queensland
• How 'Oumuamua hit the gas AI翻译
  作者：[Anonymous]