6763期

最新文章

• Playing Possum: How Animals Understand Death AI翻译
  作者：Greenbaum, Dov
  作者单位：Reichman University; Reichman University; Yale University
• Deciphering icosahedra structural evolution with atomically precise silver nanoclusters AI翻译
  作者：Hu, Feng; Yang, Gaoyuan; Zheng, Lu-Ming; Liang, Gui-Jie; Wang, Quan-Ming
  作者单位：Tsinghua University; Hubei University of Arts & Science
  摘要：Determining the atomic structure of nanoparticles (NPs) is critical for understanding their structural evolution and properties. However, controlling the growth of multiply-twinned metal NPs remains challenging because of numerous competing pathways. In this work, we report the synthesis of two giant silver icosahedral nanoclusters, [Ag213(C equivalent to CR1)96]5- and [Ag429Cl24(C equivalent to CR2)150]5- (Ag213 and Ag429, R1 =3,4,5-F3C6H2 and R2 = 4-CF3C6H4), achieved through ligand engineer...
• Growing into mentorship AI翻译
  作者：Hughes, Jasmine Gabriel
  作者单位：University of Cambridge
• Gaps remain in college sports' 15-year-old sickle cell policy AI翻译
  作者：Ortega, Rodrigo Perez
• Land availability and policy commitments limit global climate mitigation from forestation AI翻译
  作者：Wang, Yijie; Zhu, Yakun; Cook-Patton, Susan C.; Sun, Wenjuan; Zhang, Wen; Ciais, Philippe; Li, Tingting; Smith, Pete; Yuan, Wenping; Zhu, Xudong; Canadell, Josep G.; Deng, Xiaopeng; Xu, Yifan; Xu, Hao; Yue, Chao; Qin, Zhangcai
  作者单位：Sun Yat Sen University; Nature Conservancy; Smithsonian Institution; Smithsonian Environmental Research Center; Chinese Academy of Sciences; Institute of Botany, CAS; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Universite Paris Saclay; CEA; Centre National de la Recherche Scientifique (CNRS); University of Aberdeen; Peking University; Xiamen University; Commonwealth Scientific & Industrial Research Organisation (CSIRO); CSIRO Environment; Northwest A&F University - China; Chinese Academy of Sciences; Institute of Soil & Water Conservation (ISWC), CAS
  摘要：Forestation (afforestation and reforestation) could mitigate climate change by sequestering carbon within biomass and soils. However, global mitigation from forestation remains uncertain owing to varying estimates of carbon sequestration rates (notably in soil) and land availability. In this study, we developed global maps of soil carbon change that reveal carbon gains and losses with forestation, primarily in the topsoil. Constraining land availability to avoid unintended albedo-induced warmi...
• New clues found about the assembly of life's first proteins AI翻译
  作者：Service, Robert F.
• Supreme Court quashes restoration of NIH grants AI翻译
  作者：Wadman, Meredith; Travis, John
• Vegetation steers a river's path Evolution of plants could have modified ancient river trajectories AI翻译
  作者：Pizzuto, Jim
  作者单位：University of Delaware
  摘要：Vegetation in river valleys slows floodplain erosion rates (1), reduces river channel widths (2), and drives a transition from braided, multichannel rivers to single-channel, meandering rivers (3). These changes also control carbon sequestration and other biogeochemical processes along river channels (4). On page 915 of this issue, Hasson et al. (5) report a new way in which floodplain vegetation-the plant life found in flat land adjacent to a river-controls river dynamics. Meandering rivers i...
• Copper threatens marine ecosystems AI翻译
  作者：Yang, Luhua; Li, Shun; Zhang, Ruiyong
  作者单位：Chinese Academy of Sciences; Institute of Oceanology, CAS; Shandong University
• A hypoxia-responsive tRNA-derived small RNA confers renal protection through RNA autophagy AI翻译
  作者：[Anonymous]
  摘要：Transfer RNA-derived small RNAs (tsRNAs or tDRs) perform a range of cellular functions. Here, we showed that tRNA-Asp-GTC-3 ' tDR, a hypoxia-induced tDR derived from the 3 ' end of tRNA-Asp-GTC, activated autophagic flux in kidney cells and its silencing blocked autophagic flux. Functional gain-/loss-of-function studies in murine kidney disease models demonstrated a substantial renoprotective function of tRNA-Asp-GTC-3 ' tDR. Mechanistically, tRNA-Asp-GTC-3 ' tDR assembled stable G-quadruplex ...