6644期

最新文章

• De novo phytosterol synthesis in animals AI翻译
  作者：Michellod, Dolma; Bien, Tanja; Birgel, Daniel; Violette, Marlene; Kleiner, Manuel; Fearn, Sarah; Zeidler, Caroline; Gruber-Vodicka, Harald R.; Dubilier, Nicole; Liebeke, Manuel
  作者单位：Max Planck Society; University of Munster; University of Hamburg; North Carolina State University; Imperial College London; University of Bremen; University of Kiel
  摘要：Sterols are vital for nearly all eukaryotes. Their distribution differs in plants and animals, with phytosterols commonly found in plants whereas most animals are dominated by cholesterol. We show that sitosterol, a common sterol of plants, is the most abundant sterol in gutless marine annelids. Using multiomics, metabolite imaging, heterologous gene expression, and enzyme assays, we show that these animals synthesize sitosterol de novo using a noncanonical C-24 sterol methyltransferase (C24-S...
• Where and with whom does a brief social-belonging intervention promote progress in college? AI翻译
  作者：Walton, Gregory M.; Murphy, Mary C.; Logel, Christine; Yeager, David S.; Goyer, J. Parker; Brady, Shannon T.; Emerson, Katherine T. U.; Paunesku, David; Fotuhi, Omid; Blodorn, Alison; Boucher, Kathryn L.; Carter, Evelyn R.; Gopalan, Maithreyi; Henderson, Amy; Kroeper, Kathryn M.; Murdock-Perriera, Lisel Alice; Reeves, Stephanie L.; Ablorh, Tsotso T.; Ansari, Shahana; Chen, Susie; Fisher, Peter; Galvan, Manuel; Gilbertson, Madison Kawakami; Hulleman, Chris S.; Le Forestier, Joel M.; Lok, Christopher; Mathias, Katie; Muragishi, Gregg A.; Netter, Melanie; Ozier, Elise; Smith, Eric N.; Thoman, Dustin B.; Williams, Heidi E.; Wilmot, Matthew O.; Hartzog, Cassie; Li, X. Alice; Krol, Natasha
  作者单位：Stanford University; Indiana University System; Indiana University Bloomington; University of Waterloo; University of Texas System; University of Texas Austin; Wake Forest University; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; University of Indianapolis; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Sacred Heart University; California State University System; Sonoma State University; University of Massachusetts System; University of Massachusetts Boston; University of Hawaii System; University of Hawaii Manoa; University of California System; University of California Los Angeles; University of North Carolina; University of North Carolina Chapel Hill; University of Virginia; University of Toronto; University of Waterloo; University of Washington; University of Washington Seattle; University of Texas System; University of Texas Austin; California State University System; San Diego State University; University System of Ohio; Ohio State University
  摘要：A promising way to mitigate inequality is by addressing students' worries about belonging. But where and with whom is this social-belonging intervention effective? Here we report a team-science randomized controlled experiment with 26,911 students at 22 diverse institutions. Results showed that the social-belonging intervention, administered online before college (in under 30 minutes), increased the rate at which students completed the first year as full-time students, especially among student...
• Canadian Ph.D.s demand raises AI翻译
  作者：[Anonymous]
• Russia tensions keep Arctic research on ice AI翻译
  作者：Cornwall, Warren
• US boosts tally of old forests AI翻译
  作者：Price, Michael
• Critical El Nino monitor gets an upgrade AI翻译
  作者：Voosen, Paul
• Some animals make plant sterols AI翻译
  作者：Brocks, Jochen; Bobrovskiy, Ilya
  作者单位：Australian National University
• A chemical defense deters cannibalism in migratory locusts AI翻译
  作者：Chang, Hetan; Cassau, Sina; Krieger, Juergen; Guo, Xiaojiao; Knaden, Markus; Kang, Le; Hansson, Bill S.
  作者单位：Max Planck Society; Martin Luther University Halle Wittenberg; Chinese Academy of Sciences; Institute of Zoology, CAS
  摘要：Many animals engage in cannibalism to supplement their diets. Among dense populations of migratory locusts, cannibalism is prevalent. We show that under crowded conditions, locusts produce an anticannibalistic pheromone called phenylacetonitrile. Both the degree of cannibalism and the production of phenylacetonitrile are density dependent and covary. We identified the olfactory receptor that detects phenylacetonitrile and used genome editing to make this receptor nonfunctional, thereby abolish...
• Multilegged matter transport: A framework for locomotion on noisy landscapes AI翻译
  作者：Chong, Baxi; He, Juntao; Soto, Daniel; Wang, Tianyu; Irvine, Daniel; Blekherman, Grigoriy; Goldman, Daniel I.
  作者单位：University System of Georgia; Georgia Institute of Technology; University System of Georgia; Georgia Institute of Technology; University System of Georgia; Georgia Institute of Technology; University System of Georgia; Georgia Institute of Technology
  摘要：Whereas the transport of matter by wheeled vehicles or legged robots can be guaranteed in engineered landscapes such as roads or rails, locomotion prediction in complex environments such as collapsed buildings or crop fields remains challenging. Inspired by the principles of information transmission, which allow signals to be reliably transmitted over noisy channels, we developed a matter-transport framework that demonstrates that noninertial locomotion can be provably generated over noisy rug...
• Sustainable cooling with water generation AI翻译
  作者：Poredos, Primoz; Wang, Ruzhu
  作者单位：Shanghai Jiao Tong University