2025

最新文章

• Speeding up ginseng growth to aid drug discovery AI翻译
  作者：Brazil, Rachel
• Old carbon routed from land to the atmosphere by global river systems AI翻译
  作者：Dean, Joshua F.; Coxon, Gemma; Zheng, Yanchen; Bishop, Jack; Garnett, Mark H.; Bastviken, David; Galy, Valier; Spencer, Robert G. M.; Tank, Suzanne E.; Tipper, Edward T.; Vonk, Jorien E.; Wallin, Marcus B.; Zhang, Liwei; Evans, Chris D.; Hilton, Robert G.
  作者单位：University of Bristol; Linkoping University; Woods Hole Oceanographic Institution; State University System of Florida; Florida State University; University of Alberta; University of Cambridge; Vrije Universiteit Amsterdam; Swedish University of Agricultural Sciences; East China Normal University; UK Centre for Ecology & Hydrology (UKCEH); University of Oxford
  摘要：Rivers and streams are an important pathway in the global carbon cycle, releasing carbon dioxide (CO2) and methane (CH4) from their water surfaces to the atmosphere1,2. Until now, CO2 and CH4 emitted from rivers were thought to be predominantly derived from recent (sub-decadal) biomass production and, thus, part of ecosystem respiration3, 4, 5-6. Here we combine new and published measurements to create a global database of the radiocarbon content of river dissolved inorganic carbon (DIC), CO2 ...
• Observing anyonization of bosons in a quantum gas AI翻译
  作者：Dhar, Sudipta; Wang, Botao; Horvath, Milena; Vashisht, Amit; Zeng, Yi; Zvonarev, Mikhail B.; Goldman, Nathan; Guo, Yanliang; Landini, Manuele; Naegerl, Hanns-Christoph
  作者单位：University of Innsbruck; University of Innsbruck; Universite Libre de Bruxelles; Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); Universite PSL; College de France; Ecole Normale Superieure (ENS); Centre National de la Recherche Scientifique (CNRS); Sorbonne Universite
  摘要：Anyons1,2 are low-dimensional quasiparticles that obey fractional statistics, hence interpolating between bosons and fermions. In two dimensions, they exist as elementary excitations of fractional quantum Hall states3, 4-5 and are believed to enable topological quantum computing6,7. One-dimensional anyons have been theoretically proposed, but their experimental realization has proven to be difficult. Here we observed emergent anyonic correlations in a one-dimensional strongly interacting quant...
• Automated loss of pulse detection on a consumer smartwatch AI翻译
  作者：Shah, Kamal; Wang, Anran; Chen, Yiwen; Munjal, Jitender; Chhabra, Sumeet; Stange, Anthony; Wei, Enxun; Phan, Tuan; Giest, Tracy; Hawkins, Beszel; Puppala, Dinesh; Silver, Elsina; Cai, Lawrence; Rajagopalan, Shruti; Shi, Edward; Lee, Yun-Ling; Wimmer, Matt; Rudrapatna, Pramod; Rea, Thomas; Yuen, Shelten; Pathak, Anupam; Patel, Shwetak; Malhotra, Mark; Stogaitis, Marc; Phan, Jeanie; Patel, Bakul; Vasquez, Adam; Fox, Christina; Connell, Alistair; Taylor, Jim; Shreibati, Jacqueline; Miller, David; McDuff, Daniel; Kohli, Pushmeet; Gadh, Tajinder; Sunshine, Jake
  作者单位：Alphabet Inc.; Google Incorporated; University of Washington; University of Washington Seattle; University of Washington; University of Washington Seattle; Alphabet Inc.; Google Incorporated; DeepMind
  摘要：Out-of-hospital cardiac arrest is a time-sensitive emergency that requires prompt identification and intervention: sudden, unwitnessed cardiac arrest is nearly unsurvivable1, 2-3. A cardinal sign of cardiac arrest is sudden loss of pulse4. Automated biosensor detection of unwitnessed cardiac arrest, and dispatch of medical assistance, may improve survivability given the substantial prognostic role of time3,5, but only if the false-positive burden on public emergency medical systems is minimize...
• The polar regions hold crucial scientific secrets - and the time to study them is running out AI翻译
  作者：Macias-Fauria, Marc
  作者单位：University of Cambridge
• Picuris Pueblo oral history and genomics reveal continuity in US Southwest AI翻译
  作者：Pinotti, Thomaz; Adler, Michael A.; Mermejo, Richard; Bitz-Thorsen, Julie; McColl, Hugh; Scorrano, Gabriele; Feizabadifarahani, Motahareh; Gandy, Devlin; Boulanger, Matthew; Gaunitz, Charleen; Stenderup, Jesper; Ramsoe, Abigail; Korneliussen, Thorfinn; Demeter, Fabrice; Santos, Fabricio R.; Vinner, Lasse; Sikora, Martin; Meltzer, David J.; Moreno-Mayar, J. Victor; Quanchello, Craig; Willerslev, Eske
  作者单位：University of Copenhagen; Universidade Federal de Minas Gerais; Southern Methodist University; University of Rome Tor Vergata; Stockholm University; University of Cambridge; Museum National d'Histoire Naturelle (MNHN); Universite Paris Cite; Centre National de la Recherche Scientifique (CNRS); University of Cambridge; University of Bremen
  摘要：Indigenous groups often encounter significant challenges when asserting ancestral claims and cultural affiliations based on oral histories, particularly in the USA where such narratives have historically been undervalued. Although ancient DNA offers a tool to complement traditional knowledge and address gaps in oral history, longstanding disregard for Indigenous sovereignty and beliefs has understandably led many Indigenous communities to distrust DNA studies1, 2, 3-4. Earlier research often f...
• Microbial metabolite drives ageing-related clonal haematopoiesis via ALPK1 AI翻译
  作者：Agarwal, Puneet; Sampson, Avery; Hueneman, Kathleen; Choi, Kwangmin; Jakobsen, Niels Asger; Uible, Emma; Ishikawa, Chiharu; Yeung, Jennifer; Bolanos, Lyndsey; Zhao, Xueheng; Setchell, Kenneth D.; Haslam, David B.; Galloway-Pena, Jessica; Byrd, John C.; Vyas, Paresh; Starczynowski, Daniel T.
  作者单位：Cincinnati Children's Hospital Medical Center; University of Oxford; Cincinnati Children's Hospital Medical Center; University System of Ohio; University of Cincinnati; Cincinnati Children's Hospital Medical Center; University System of Ohio; University of Cincinnati; Texas A&M University System; Texas A&M University College Station; University System of Ohio; University of Cincinnati; University System of Ohio; University of Cincinnati; University System of Ohio; University of Cincinnati
  摘要：Clonal haematopoiesis of indeterminate potential (CHIP) involves the gradual expansion of mutant pre-leukaemic haematopoietic cells, which increases with age and confers a risk for multiple diseases, including leukaemia and immune-related conditions1. Although the absolute risk of leukaemic transformation in individuals with CHIP is very low, the strongest predictor of progression is the accumulation of mutant haematopoietic cells2. Despite the known associations between CHIP and increased all...
• The evolutionary origin of sensitive dental structures AI翻译
  作者：Houee, Guillaume; Janvier, Philippe
  作者单位：University of Tokyo; Museum National d'Histoire Naturelle (MNHN); Sorbonne Universite; Centre National de la Recherche Scientifique (CNRS)
  摘要：Fossil data shed light on a debate about when vertebrate dental tissues arose by assigning an early sensory structure to arthropods rather than to vertebrates.
• Complex water networks visualized by cryogenic electron microscopy of RNA AI翻译
  作者：Kretsch, Rachael C.; Li, Shanshan; Pintilie, Grigore; Palo, Michael Z.; Case, David A.; Das, Rhiju; Zhang, Kaiming; Chiu, Wah
  作者单位：Stanford University; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Stanford University; Stanford University; Stanford University; Rutgers University System; Rutgers University New Brunswick; Stanford University; Stanford University; Howard Hughes Medical Institute; Stanford University; Stanford University; United States Department of Energy (DOE); SLAC National Accelerator Laboratory
  摘要：The stability and function of biomolecules are directly influenced by their myriad interactions with water1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15-16. Here we investigated water through cryogenic electron microscopy (cryo-EM) on a highly solvated molecule: the Tetrahymena ribozyme. By using segmentation-guided water and ion modelling (SWIM)17,18, an approach combining resolvability and chemical parameters, we automatically modelled and cross-validated water molecules and Mg2+ ions in ...
• Electrical switching of a p-wave magnet AI翻译
  作者：Song, Qian; Stavric, Srdjan; Barone, Paolo; Droghetti, Andrea; Antonenko, Daniil S.; Venderbos, Joern W. F.; Occhialini, Connor A.; Ilyas, Batyr; Ergecen, Emre; Gedik, Nuh; Cheong, Sang-Wook; Fernandes, Rafael M.; Picozzi, Silvia; Comin, Riccardo
  作者单位：Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); G d'Annunzio University of Chieti-Pescara; Consiglio Nazionale delle Ricerche (CNR); University of Belgrade; Consiglio Nazionale delle Ricerche (CNR); University of Rome Tor Vergata; Universita Ca Foscari Venezia; Yale University; Drexel University; Rutgers University System; Rutgers University New Brunswick; Rutgers University System; Rutgers University New Brunswick; University of Illinois System; University of Illinois Urbana-Champaign; University of Illinois System; University of Illinois Urbana-Champaign; University of Milano-Bicocca
  摘要：Magnetic states with zero magnetization but non-relativistic spin splitting are outstanding candidates for the next generation of spintronic devices. Their electronvolt (eV)-scale spin splitting, ultrafast spin dynamics and nearly vanishing stray fields make them particularly promising for several applications1,2. A variety of such magnetic states with non-trivial spin textures have been identified recently, including even-parity d-wave, g-wave or i-wave altermagnets and odd-parity p-wave magn...