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作者：Kasen, Daniel
作者单位：University of California System; University of California Berkeley
摘要：The afterglow of a long burst of gamma-rays suggests that the events leading to these explosions can be sizeable sources of some of the Universe's rare isotopes - and that classifications of gamma-ray bursts are too simplistic.
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作者：Lu, Zhengguang; Han, Tonghang; Yao, Yuxuan; Reddy, Aidan P.; Yang, Jixiang; Seo, Junseok; Watanabe, Kenji; Taniguchi, Takashi; Fu, Liang; Ju, Long
作者单位：Massachusetts Institute of Technology (MIT); National Institute for Materials Science; National Institute for Materials Science
摘要：The fractional quantum anomalous Hall effect (FQAHE), the analogue of the fractional quantum Hall effect(1) at zero magnetic field, is predicted to exist in topological flat bands under spontaneous time-reversal-symmetry breaking(2,3,4,5,6). The demonstration of FQAHE could lead to non-Abelian anyons that form the basis of topological quantum computation(7,8,9). So far, FQAHE has been observed only in twisted MoTe2 at a moire filling factor v > 1/2 (refs. (10,11,12,13)). Graphene-based moire s...
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作者：Nagel, Katherine
作者单位：New York University
摘要：Studies reveal how neuronal populations in the fruit fly brain work together to compare the direction of a goal with the direction that the fly is facing, and convert this into a signal that steers the fly towards its target.
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作者：Rimal, Bipin; Collins, Stephanie L.; Tanes, Ceylan E.; Rocha, Edson R.; Granda, Megan A.; Solanki, Sumeet; Hoque, Nushrat J.; Gentry, Emily C.; Koo, Imhoi; Reilly, Erin R.; Hao, Fuhua; Paudel, Devendra; Singh, Vishal; Yan, Tingting; Kim, Min Soo; Bittinger, Kyle; Zackular, Joseph P.; Krausz, Kristopher W.; Desai, Dhimant; Amin, Shantu; Coleman, James P.; Shah, Yatrik M.; Bisanz, Jordan E.; Gonzalez, Frank J.; Vanden Heuvel, John P.; Wu, Gary D.; Zemel, Babette S.; Dorrestein, Pieter C.; Weinert, Emily E.; Patterson, Andrew D.
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of Pennsylvania; Pennsylvania Medicine; Childrens Hospital of Philadelphia; University of North Carolina; East Carolina University; University of Michigan System; University of Michigan; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University of California System; University of California San Diego; University of California System; University of California San Diego; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; National Institutes of Health (NIH) - USA; NIH National Cancer Institute (NCI); University of Pennsylvania; Pennsylvania Medicine; Childrens Hospital of Philadelphia; University of Pennsylvania; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Penn State Health; University of Pennsylvania; Virginia Polytechnic Institute & State University
摘要：Bacteria in the gastrointestinal tract produce amino acid bile acid amidates that can affect host-mediated metabolic processes1-6; however, the bacterial gene(s) responsible for their production remain unknown. Herein, we report that bile salt hydrolase (BSH) possesses dual functions in bile acid metabolism. Specifically, we identified a previously unknown role for BSH as an amine N-acyltransferase that conjugates amines to bile acids, thus forming bacterial bile acid amidates (BBAAs). To char...
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作者：Wu, Yingju; Zhang, Yang; Wang, Xiaoyu; Hu, Wentao; Zhao, Song; Officer, Timothy; Luo, Kun; Tong, Ke; Du, Congcong; Zhang, Liqiang; Li, Baozhong; Zhuge, Zewen; Liang, Zitai; Ma, Mengdong; Nie, Anmin; Yu, Dongli; He, Julong; Liu, Zhongyuan; Xu, Bo; Wang, Yanbin; Zhao, Zhisheng; Tian, Yongjun
作者单位：Yanshan University; Tsinghua University; Shaanxi University of Technology; University of Chicago; Yanshan University
摘要：Moire superlattices formed by twisted stacking in van der Waals materials have emerged as a new platform for exploring the physics of strongly correlated materials and other emergent phenomena1-5. However, there remains a lack of research on the mechanical properties of twisted-layer van der Waals materials, owing to a lack of suitable strategies for making three-dimensional bulk materials. Here we report the successful synthesis of a polycrystalline boron nitride bulk ceramic with high room-t...
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作者：Westeinde, Elena A.; Kellogg, Emily; Dawson, Paul M.; Lu, Jenny; Hamburg, Lydia; Midler, Benjamin; Druckmann, Shaul; Wilson, Rachel I.
作者单位：Harvard University; Harvard Medical School; Stanford University; Stanford University
摘要：To navigate, we must continuously estimate the direction we are headed in, and we must correct deviations from our goal1. Direction estimation is accomplished by ring attractor networks in the head direction system2,3. However, we do not fully understand how the sense of direction is used to guide action. Drosophila connectome analyses4,5 reveal three cell populations (PFL3R, PFL3L and PFL2) that connect the head direction system to the locomotor system. Here we use imaging, electrophysiology ...
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作者：Dworkin, Jordan
摘要：Academic researchers have a unique opportunity to benefit society - and their research - by spending time in government.
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作者：Nusser, Anja; Sagar; Swann, Jeremy B.; Krauth, Brigitte; Diekhoff, Dagmar; Calderon, Lesly; Happe, Christiane; Gruen, Dominic; Boehm, Thomas
作者单位：Max Planck Society; Max Planck Society; University of Freiburg; Vienna Biocenter (VBC); Research Institute of Molecular Pathology (IMP); University of Wurzburg; Max Planck Society; Helmholtz Association; Helmholtz-Center for Infection Research; University of Freiburg
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作者：Schiattarella, Chiara; Romano, Silvia; Sirleto, Luigi; Mocella, Vito; Rendina, Ivo; Lanzio, Vittorino; Riminucci, Fabrizio; Schwartzberg, Adam; Cabrini, Stefano; Chen, Jiaye; Liang, Liangliang; Liu, Xiaogang; Zito, Gianluigi
作者单位：Consiglio Nazionale delle Ricerche (CNR); Istituto di Scienze Applicate e Sistemi Intelligenti Eduardo Caianiello (ISASI-CNR); Consiglio Nazionale delle Ricerche (CNR); Istituto di Scienze Applicate e Sistemi Intelligenti Eduardo Caianiello (ISASI-CNR); United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; National University of Singapore; Agency for Science Technology & Research (A*STAR); A*STAR - Institute of Materials Research & Engineering (IMRE); National University of Singapore
摘要：Photonic bound states in the continuum (BICs), embedded in the spectrum of free-space waves1,2 with diverging radiative quality factor, are topologically non-trivial dark modes in open-cavity resonators that have enabled important advances in photonics3,4. However, it is particularly challenging to achieve maximum near-field enhancement, as this requires matching radiative and non-radiative losses. Here we propose the concept of supercritical coupling, drawing inspiration from electromagnetica...
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作者：Xu, Peng; Li, Geng; Zheng, Yi; Fung, Jimmy C. H.; Chen, Anping; Zeng, Zhenzhong; Shen, Huizhong; Hu, Min; Mao, Jiafu; Zheng, Yan; Cui, Xiaoqing; Guo, Zhilin; Chen, Yilin; Feng, Lian; He, Shaokun; Zhang, Xuguo; Lau, Alexis K. H.; Tao, Shu; Houlton, Benjamin Z.
作者单位：Southern University of Science & Technology; Tianjin University; Hong Kong University of Science & Technology; Hong Kong University of Science & Technology; Southern University of Science & Technology; Southern University of Science & Technology; Hong Kong University of Science & Technology; Colorado State University System; Colorado State University Fort Collins; Colorado State University System; Colorado State University Fort Collins; Peking University; United States Department of Energy (DOE); Oak Ridge National Laboratory; Beijing Forestry University; Hong Kong University of Science & Technology; Peking University; Cornell University; Cornell University
摘要：Crop production is a large source of atmospheric ammonia (NH3), which poses risks to air quality, human health and ecosystems1-5. However, estimating global NH3 emissions from croplands is subject to uncertainties because of data limitations, thereby limiting the accurate identification of mitigation options and efficacy4,5. Here we develop a machine learning model for generating crop-specific and spatially explicit NH3 emission factors globally (5-arcmin resolution) based on a compiled datase...
