Science

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• A superconducting quantum simulator based on a photonic-bandgap metamaterial AI翻译
  作者：Zhang, Xueyue; Kim, Eunjong; Mark, Daniel K.; Choi, Soonwon; Painter, Oskar
  作者单位：California Institute of Technology; California Institute of Technology; California Institute of Technology; Massachusetts Institute of Technology (MIT)
  摘要：Synthesizing many-body quantum systems with various ranges of interactions facilitates the study of quantum chaotic dynamics. Such extended interaction range can be enabled by using nonlocal degrees of freedom such as photonic modes in an otherwise locally connected structure. Here, we present a superconducting quantum simulator in which qubits are connected through an extensible photonic-bandgap metamaterial, thus realizing a one-dimensional Bose-Hubbard model with tunable hopping range and o...
• A 3D extra-large-pore zeolite enabled by 1D-to-3D topotactic condensation of a chain silicate AI翻译
  作者：Li, Jian; Gao, Zihao Rei; Lin, Qing-Fang; Liu, Chenxu; Gao, Fangxin; Lin, Cong; Zhang, Siyao; Deng, Hua; Mayoral, Alvaro; Fan, Wei; Luo, Song; Chen, Xiaobo; He, Hong; Camblor, Miguel A.; Chen, Fei-Jian; Yu, Jihong
  作者单位：Stockholm University; Peking University; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Instituto de Ciencia de Materiales de Madrid (ICMM); Bengbu Medical University; Jilin University; Hong Kong Polytechnic University; Chinese Academy of Sciences; Institute of Urban Environment, CAS; University of Zaragoza; Consejo Superior de Investigaciones Cientificas (CSIC); University of Zaragoza; University of Massachusetts System; University of Massachusetts Amherst; China University of Petroleum; Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES), CAS
  摘要：Zeolites are microporous silicates with a large variety of applications as catalysts, adsorbents, and cation exchangers. Stable silica-based zeolites with increased porosity are in demand to allow adsorption and processing of large molecules but challenge our synthetic ability. We report a new, highly stable pure silica zeolite called ZEO-3, which has a multidimensional, interconnected system of extra-large pores open through windows made by 16 and 14 silicate tetrahedra, the least dense polym...
• Atmospheric goals for sustainable development AI翻译
  作者：Keywood, Melita; Paton-Walsh, Clare; Lawrence, Mark; George, Christian; Formenti, Paola; Schofield, Roybn; Cleugh, Helen; Borgford-Parnell, Nathan; Capon, Anthony
  作者单位：Commonwealth Scientific & Industrial Research Organisation (CSIRO); University of Wollongong; Universite Claude Bernard Lyon 1; Centre National de la Recherche Scientifique (CNRS); Universite Paris Cite; Universite Paris-Est-Creteil-Val-de-Marne (UPEC); Universite Paris-Est-Creteil-Val-de-Marne (UPEC); Centre National de la Recherche Scientifique (CNRS); University of Melbourne; Australian National University; Monash University
• Total synthesis of lissodendoric acid A via stereospecific trapping of a strained cyclic allene AI翻译
  作者：Ippoliti, Francesca M.; Adamson, Nathan J.; Wonilowicz, Laura G.; Nasrallah, Daniel J.; Darzi, Evan R.; Donaldson, Joyann S.; Garg, Neil K.
  作者单位：University of California System; University of California Los Angeles; Pfizer; Pfizer USA
  摘要：Small rings that contain allenes are unconventional transient compounds that have been known since the 1960s. Despite being discovered around the same time as benzyne and offering a number of synthetically advantageous features, strained cyclic allenes have seen relatively little use in chemical synthesis. We report a concise total synthesis of the manzamine alkaloid lissodendoric acid A, which hinges on the development of a regioselective, diastereoselective, and stereospecific trapping of a ...
• Nanobody-driven signaling reveals the core receptor complex in root nodule symbiosis AI翻译
  作者：Rubsam, Henriette; Kronauer, Christina; Abel, Nikolaj B.; Ji, Hongtao; Lironi, Damiano; Hansen, Simon B.; Nadzieja, Marcin; Kolte, Marie, V; Abel, Dorte; de Jong, Noor; Madsen, Lene H.; Liu, Huijun; Stougaard, Jens; Radutoiu, Simona; Andersen, Kasper R.
  作者单位：Aarhus University; Huazhong Agricultural University
  摘要：Understanding the composition and activation of multicomponent receptor complexes is a challenge in biology. To address this, we developed a synthetic approach based on nanobodies to drive assembly and activation of cell surface receptors and apply the concept by manipulating receptors that govern plant symbiosis with nitrogen-fixing bacteria. We show that the Lotus japonicus Nod factor receptors NFR1 and NFR5 constitute the core receptor complex initiating the cortical root nodule organogenes...
• China's population starts to fall AI翻译
  作者：[Anonymous]
• In 2022, Earth set new records for warming AI翻译
  作者：Enserink, Martin; Brainard, Jeffrey
• Citizen scientists report global rapid reductions in the visibility of stars from 2011 to 2022 AI翻译
  作者：Kyba, Christopher C. M.; Altintas, Yigit Oner; Walker, Constance E.; Newhouse, Mark
  作者单位：Helmholtz Association; Helmholtz-Center Potsdam GFZ German Research Center for Geosciences; Ruhr University Bochum; European Organisation for the Exploitation of Meteorological Satellites
  摘要：The artificial glow of the night sky is a form of light pollution; its global change over time is not well known. Developments in lighting technology complicate any measurement because of changes in lighting practice and emission spectra. We investigated the change in global sky brightness from 2011 to 2022 using 51,351 citizen scientist observations of naked-eye stellar visibility. The number of visible stars decreased by an amount that can be explained by an increase in sky brightness of 7 t...
• Now in charge, House Republicans ramp up probes AI翻译
  作者：Mervis, Jeffrey; Cohen, Jon
• Reef sharks face extinction AI翻译
  作者：[Anonymous]