2026

最新文章

• NASA's Roman telescope readies a sweeping view of the universe AI翻译
  作者：Clery, Daniel
• The worst energy policy in the world AI翻译
  作者：Mahdavi, Paasha; Ross, Michael L.
  作者单位：University of California System; University of California Santa Barbara; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles
• Modality-specific neurovascular coupling via layer-segregated arteriole networks AI翻译
  作者：Malescot, Antoine; Malheiros-Lima, Milene R.; Zana, Laurianne; Bennett, Michael C.; Martineau, Eric; Schmid, Franca; Rungta, Ravi L.
  作者单位：Universite de Montreal; Universite de Montreal; Universite de Montreal; University of Bern
  摘要：The brain's vascular system dynamically regulates energy supply through neurovascular coupling. In this study, we show that in mice, neurovascular coupling is modality-dependent: Distinct sensory inputs recruit specific arteriole types, producing differential laminar blood flow patterns. Using multiscale optical imaging, we compared neuronal and vascular responses to touch, nociception, motor-sensory feedback, and spontaneous activity. Shallow arteriole dilation emerges with increasing superfi...
• The climate benefits of retiring a fully operational internal combustion engine vehicle AI翻译
  作者：Campbell, J. Elliott; Geyer, Roland
  作者单位：University of California System; University of California Santa Cruz; University of California System; University of California Santa Barbara
  摘要：Internal combustion engine (ICE) vehicles represent the single largest source of carbon dioxide emissions for most US households. Although battery electric vehicles (BEVs) considerably reduce use-phase emissions, the transition poses a fundamental life cycle optimization challenge: Is there a net climate benefit to retiring a functional ICE vehicle before its end of life? Retiring a functioning ICE vehicle incurs a fundamental trade-off between BEV manufacturing emissions and decreased vehicle...
• Ebola raged below the radar for months, report says AI翻译
  作者：Kupferschmidt, Kai
• Churn, not crisis, for UK science AI翻译
  作者：Rees, Geraint; Wilsdon, James
  作者单位：University of London; University College London; University of London; University College London
• DNA polymerization activates RNA cleavage of a reverse transcriptase-like antiviral enzyme AI翻译
  作者：Rong, Xuejun; Xiao, Jun; Zhao, Xinyuan; Yan, Yan; Li, Jing; Chen, Yifan; Fan, Yihua; Liu, Zhichao; Cao, Yue; Cao, Fan; Cheng, Rui; Wang, Xionglue; Wang, Longfei; Zhu, Bin
  作者单位：Huazhong University of Science & Technology; Wuhan University; Shenzhen Huazhong University of Science & Technology Research Institute
  摘要：Defense-associated reverse transcriptases (DRTs) transcribe noncoding RNAs (ncRNAs) for antiviral defense, but the mechanisms of ncRNA-independent DRTs remain unclear. In this work, we show that a single DRT4 mediates RNA-targeting antiphage defense by integrating DNA polymerase, exonuclease, and RNA endonuclease activities. First, through an equilibrium between its DNA polymerase and exonuclease activities, DRT4 senses phage infection, as elevated deoxynucleotide triphosphate levels shift the...
• The tangled world of snake taxonomy AI翻译
  作者：Kemp, Christopher
  作者单位：Michigan State University
• Alzheimer's trial results lend momentum to drugs targeting tau AI翻译
  作者：Smith, Jennie Erin
• University science in the US needs a coherent plan AI翻译
  作者：Thorp, H. Holden