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作者：Goetz, Magdalena; Torres-Padilla, Maria-Elena
作者单位：Helmholtz Association; Helmholtz-Center Munich - German Research Center for Environmental Health; University of Munich; University of Munich; Helmholtz Association; Helmholtz-Center Munich - German Research Center for Environmental Health; University of Munich
摘要：Stem cells are a promising source for cellular therapies across many diseases and tissues. Their inherent ability to differentiate into other cell types has been the focus of investigation over decades. This ability is currently being exploited for therapies using strategies to repair or replace damaged tissues and cells or to alleviate immune rejection. Exploring stem cell function has enabled direct reprogramming approaches, for example, through the production of induced pluripotent stem cel...
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作者：Yang, Ji; Falling, Lorenz J.; Yan, Siyang; Zhang, Biluan; Verma, Pragya; Daemen, Luke; Cheng, Yongqiang; Zhao, Xiao; Zhang, Shuchen; Chen, Jeng-Lung; Yao, Bingqing; Tan, Shengdong; Chae, Sudong; He, Qian; Nemsak, Slavomir; Wu, Zili; Prendergast, David; Guo, Yanbing; Liu, Jiaxu; Salmeron, Miquel; Su, Ji
作者单位：United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; Dalian University of Technology; State Key Laboratory Surfactant Fine Chemistry; Central China Normal University; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; United States Department of Energy (DOE); Oak Ridge National Laboratory; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; National Synchrotron Radiation Research Center; National University of Singapore; United States Department of Energy (DOE); Oak Ridge National Laboratory
摘要：Single-atom site catalysts can improve the rates and selectivity of many catalytic reactions. We have modified Pt1/CeO2 single sites by combining them with molecular groups and with oxygen vacancies of the support. The new sites include hydrided (Pt2+-Ce3+H delta-) and hydroxylated (Pt2+-Ce3+OH) sites that exhibit higher reactivity and selectivity to previous single sites for several reactions, including a ninefold increase in the reaction rate for carbon monoxide oxidation and a 2.3-fold impr...
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作者：Chakraborti, H.; Pugliese, L.; Assouline, A.; Watanabe, K.; Taniguchi, T.; Kumada, N.; Glattli, D. C.; Jo, M.; Sim, H. -S; Roulleau, P.
作者单位：CEA; Centre National de la Recherche Scientifique (CNRS); Universite Paris Saclay; National Institute for Materials Science; NTT, Inc; Korea Advanced Institute of Science & Technology (KAIST); Communaute Universite Grenoble Alpes; Universite Grenoble Alpes (UGA); Centre National de la Recherche Scientifique (CNRS); Kyungpook National University (KNU)
摘要：The collision of two electrons at a beam splitter provides a method for studying their coherence and indistinguishability. Its realization requires the on-demand generation and synchronization of single electrons. In this work, we demonstrate the coherent collision of single electrons, generated by voltage pulses, in a graphene Mach-Zehnder interferometer. By measuring shot noise resulting from the collisions, we unveil fundamental characteristics of colliding electrons, highlighting the compl...
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作者：Hong, Huizhen; Xu, Zhikang; Mei, Bingbao; Hu, Wende; Fornasiero, Paolo; Wang, Chuanming; Wang, Tinghai; Yue, Yuanyuan; Li, Tiesen; Yang, Chen; Cui, Qingyan; Zhu, Haibo; Bao, Xiaojun
作者单位：Fuzhou University; Qingyuan Innovation Laboratory; Chinese Academy of Sciences; Shanghai Advanced Research Institute, CAS; University of Trieste
摘要：Supported noble metal cluster catalysts are typically operated under severe conditions involving switching between reducing and oxidizing atmospheres, causing irreversible transformation of the catalyst structure and thereby leading to permanent deactivation. We discovered that various platinum (Pt) precursors spontaneously disperse in a germanium-MFI (Ge-MFI) zeolite, which opposes the Ostwald ripening phenomenon, producing self-regenerating Pt/Ge-MFI catalysts for propane dehydrogenation. Th...
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作者：Funk, Michael
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作者：Faure, Guilhem; Saito, Makoto; Wilkinson, Max E.; Quinones-Olvera, Natalia; Xu, Peiyu; Flam-Shepherd, Daniel; Kim, Stephanie; Reddy, Nishith; Zhu, Shiyou; Evgeniou, Lilia; Koonin, Eugene V.; Macrae, Rhiannon K.; Zhang, Feng
作者单位：Howard Hughes Medical Institute; Massachusetts Institute of Technology (MIT); Harvard University; Massachusetts Institute of Technology (MIT); Broad Institute; Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); Harvard University; Harvard University; National Institutes of Health (NIH) - USA; NIH National Library of Medicine (NLM)
摘要：RNA-guided systems provide remarkable versatility, enabling diverse biological functions. Through iterative structural and sequence homology-based mining starting with a guide RNA-interaction domain of Cas9, we identified a family of RNA-guided DNA-targeting proteins in phage and parasitic bacteria. Each system consists of a tandem interspaced guide RNA (TIGR) array and a TIGR-associated (Tas) protein containing a nucleolar protein (Nop) domain, sometimes fused to HNH (TasH)- or RuvC (TasR)-nu...
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作者：Hampton, J. Trae; Liu, Wenshe Ray
作者单位：Texas A&M University System; Texas A&M University College Station
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作者：Milner, William R.; Lannig, Stefan; Mamaev, Mikhail; Yan, Lingfeng; Chu, Anjun; Lewis, Ben; Frankel, Max N.; Hutson, Ross B.; Rey, Ana Maria; Ye, Jun
作者单位：University of Colorado System; University of Colorado Boulder; National Institute of Standards & Technology (NIST) - USA; University of Colorado System; University of Colorado Boulder
摘要：Scaling up the performance of atomic clocks requires understanding complex many-body Hamiltonians to ensure meaningful gains for metrological applications. Here we use a degenerate Fermi gas loaded into a three-dimensional optical lattice to study the effect of a tunable Fermi-Hubbard Hamiltonian. The clock laser introduces a spin-orbit coupling spiral phase and breaks the isotropy of superexchange interactions, leading to XXZ-type spin anisotropy. By tuning the lattice confinement and applyin...
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作者：Normile, Dennis
