6809期

最新文章

• Crush-resistant air sacs allow insect larvae to exploit aquatic habitats at extreme depth AI翻译
  作者：McKenzie, Evan K. G.; Ngochera, Maxon J. R.; Chombo, Joseph; McLennan, Hayley; Proud, Roland; Ames, Tahnee; Matthews, Philip G. D.
  作者单位：University of British Columbia; University of St Andrews
  摘要：The absence of aquatic insects from pelagic marine habitats has been attributed to their air-filled tracheal respiratory system, which could implode at depth while undertaking diel vertical migrations to escape predatory fish. However, we found that the aquatic larvae of the lake fly Chaoborus edulis in Lake Malawi have modified their tracheal system into reinforced buoyancy-regulating air-filled sacs, allowing them to escape predatory fish by undertaking these migrations well over 200 meters ...
• The rise and fall of language diversity through the Holocene AI翻译
  作者：Blasi, D. E.; Hamilton, M. J.; Gray, R. D.; Bowern, C. L.
  作者单位：Pompeu Fabra University; University of Barcelona; Harvard University; University of Texas System; University of Texas at San Antonio; University of Texas System; University of Texas at San Antonio; The Santa Fe Institute; Max Planck Society; University of Auckland; Yale University
  摘要：Characterizing the factors that have shaped linguistic diversity is fundamental for understanding human history, culture, and cognition. In this study, we combined statistical and social computational modeling, ethnographic data, and paleodemographic inference to model trajectories of global linguistic diversity. Before the onset of plant and animal domestication, the number of languages was smaller than it is today (4500 to 6000 compared with 7500). Subsequent increases in global population p...
• Dynamic asymmetric strain imprinted into substrates by an oxide thin film AI翻译
  作者：Kisiel, Elliot; Pofelski, Alexandre; Salev, Pavel; Qiu, Erbin; Reisbick, Spencer; Liu, Chuhang; Glatz, Andreas; Poudyal, Ishwor; He, Wei; Basak, Rourav; Yay, Kaan Alp; Li, Junjie; Patel, Umeshkumar; Zhang, Zhan; Last, Arndt; Zhu, Yimei; Schuller, Ivan K.; Islam, Zahir; Frano, Alex
  作者单位：University of California System; University of California San Diego; United States Department of Energy (DOE); Argonne National Laboratory; United States Department of Energy (DOE); Brookhaven National Laboratory; University of Denver; United States Department of Energy (DOE); Argonne National Laboratory; Stanford University; Stanford University; United States Department of Energy (DOE); Stanford University; SLAC National Accelerator Laboratory; Helmholtz Association; Karlsruhe Institute of Technology
  摘要：In film-substrate systems, the substrate role is often considered to be limited to providing static mechanical constraints. Dynamic film-substrate interactions when a structural change in the film modifies the substrate are generally disregarded. Using combined x-ray and electron microscopies, we observed that an electrically induced filament in a vanadium dioxide film created strong asymmetric strain in an underlying sapphire substrate. This asymmetric substrate strain fed back into the film ...
• Seafood biosecurity gaps threaten biodiversity AI翻译
  作者：Maboloc, Elizaldy Acebu; Fang, James Kar-Hei
  作者单位：Hong Kong Polytechnic University; City University of Hong Kong; Hong Kong Polytechnic University