2024

最新文章

• Modeling and dissociation of intrinsic and input- driven neural population dynamics underlying behavior AI翻译
  作者：Vahidi, Parsa; Sani, Omid G.; Shanechi, Maryam M.
  作者单位：University of Southern California; University of Southern California; University of Southern California; University of Southern California
  摘要：Neural dynamics can reflect intrinsic dynamics or dynamic inputs, such as sensory inputs or inputs from other brain regions. To avoid misinterpreting temporally structured inputs as intrinsic dynamics, dynamical models of neural activity should account for measured inputs. However, incorporating measured inputs remains elusive in joint dynamical modeling of neural- behavioral data, which is important for studying neural computations of behavior. We first show how training dynamical models of n...
• Emergence of threefold symmetric helical photocurrents in low twinned AI翻译
  作者：Connelly, Blair C.; Taylor, Patrick J.; de Coster, George J.
  作者单位：United States Department of Defense; US Army Research, Development & Engineering Command (RDECOM); US Army Research Laboratory (ARL); United States Army
  摘要：We present evidence of a strong circular photon drag effect (PDE) in topological insulators (TIs) through the observation of helicity- dependent topological photocurrents with threefold rotational symmetry using THz spectroscopy in epitaxially-grown Bi2Se3 with reduced crystallographic twinning. We establish how twinned domains introduce competing nonlinear optical (NLO) responses inherent to the crystal structure that obscure geometry- sensitive optical processes through the introduction of a...
• Laser- driven noncontact bubble transfer printing via a hydrogel composite stamp AI翻译
  作者：Li, Chenglong; Luo, Hongyu; Lin, Xinyi; Zhang, Shun; Song, Jizhou
  作者单位：Zhejiang University; Zhejiang University; Zhejiang University; Zhejiang University; Tsinghua University
  摘要：Transfer printing that enables heterogeneous integration of materials into spatially organized, functional arrangements is essential for developing unconventional electronic systems. Here, we report a laser- driven noncontact bubble transfer printing via a hydrogel composite stamp, which features a circular reservoir filled with hydrogel inside a stamp body and encapsulated by a laser absorption layer and an adhesion layer. This composite structure of stamp provides a reversible thermal contro...
• The shape of the Himalayan Arc: An ellipse pinned by syntaxial strike-slip fault tips AI翻译
  作者：Jiao, Liqing; Tapponnier, Paul; Mccallum, Aurelie Coudurier-Curveur; Xu, Xiwei
  作者单位：China Geological Survey; Chinese Academy of Geological Sciences; China University of Geosciences
  摘要：Trans-Himalayan geodetic data show that, between both syntaxes, India/Asia convergence is steadily oriented approximate to N20 degrees E. However, surface faulting near both syntaxes, along the 2005 and 1950 earthquake ruptures, imply long-term thrusting directed approximate to 130 degrees apart, and post-LGM (last Glacial Maximum) shortening rates of approximate to 5 to 6 mm/y, approximate to 2 to 3 times slower than in Nepal (approximate to 15 to 20 mm/y). Syntaxial earthquakes' return-time ...
• A TeZla micromixer for interrogating the early and broad folding landscape of G-quadruplex via multistage velocity descending AI翻译
  作者：Li, Zheyu; Hu, Rui; Li, Tao; Zhu, Jiang; You, Huijuan; Li, Yiwei; Liu, Bi-Feng; Li, Conggang; Li, Ying; Yang, Yunhuang
  作者单位：Huazhong University of Science & Technology; Chinese Academy of Sciences; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Huazhong University of Science & Technology; Huazhong University of Science & Technology
  摘要：Biomacromolecular folding kinetics involves fast folding events and broad timescales. Current techniques face limitations in either the required time resolution or the observation window. In this study, we developed the TeZla micromixer, integrating Tesla and Zigzag microstructures with a multistage velocity descending strategy. TeZla achieves a significant short mixing dead time (40 mu s) and a wide time window covering four orders of magnitude (up to 300 ms). Using this unique micromixer, we...
• Adaptive cooling strategy via human hair: High optothermal conversion efficiency of solar radiation into thermal dissipation AI翻译
  作者：Pal, Sudip Kumar; Jeong, Soohyun; Otoufat, Tohid; Bae, Hoyeon; Kim, Gunwoo
  作者单位：Korea Institute of Industrial Technology (KITECH)
  摘要：Natural species have developed complex nanostructures in a hierarchical pattern to control the absorption, reflection, or transmission of desired solar and infrared wavelengths. This bio- inspired structure is a promising method to manipulating solar energy and thermal management. In particular, human hair is used in this article to highlight the optothermal properties of bio- inspired structures. This study investigated how melanin, an effective solar absorber, and the structural morphology o...
• Fenton-like activity and pathway modulation via single-atom sites and pollutants comediates the electron transfer process AI翻译
  作者：Guo, Jirui; Wang, Yujie; Shang, Yanan; Yin, Kexin; Li, Qian; Gao, Baoyu; Li, Yanwei; Duan, Xiaoguang; Xu, Xing
  作者单位：Shandong University; Shandong University of Science & Technology; Shandong University; University of Adelaide
  摘要：The studies on the origin of versatile oxidation pathways toward targeted pollutants in the single-atom catalysts (SACs)/peroxymonosulfate (PMS) systems were always associated with the coordination structures rather than the perspective of pollutant characteristics, and the analysis of mechanism commonality is lacking. In this work, a variety of single-atom catalysts (M-SACs, M: Fe, Co, and Cu) were fabricated via a pyrolysis process using lignin as the complexation agent and substrate precurs...
• The immunoglobulin J chain is an evolutionarily co-opted chemokine AI翻译
  作者：Kawasakia, Kazuhiko; Ohtab, Yuko; Castroc, Caitlin D.; Flajnikb, Martin F.
  作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; University System of Maryland; University of Maryland Baltimore; University of Chicago
  摘要：The joining (J) chain regulates polymerization of multimeric Immunoglobulin(Ig)M and IgA, forming a disulfide bond to the C termini of their Ig heavy chains, and it controls IgM/IgA transport across mucosal epithelia. Like Ig itself and human-like adaptive immunity, J chain emerged in jawed vertebrates (gnathostomes), but its origin has remained mysterious since its discovery over 50 y ago. Here, we show unexpectedly that J chain is a member of the CXCL chemokine family. The J chain gene (JCHA...
• High-resolution map of the Fc functions mediated by COVID-19-neutralizing antibodies AI翻译
  作者：Paciello, Ida; Maccari, Giuseppe; Pantano, Elisa; Andreano, Emanuele; Rappuoli, Rino
  作者单位：University of Siena
  摘要：A growing body of evidence shows that fragment crystallizable (Fc)-dependent antibody effector functions play an important role in protection from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. To unravel the mechanisms that drive these responses, we analyzed the phagocytosis and complement deposition mediated by a panel of 482 human monoclonal antibodies (nAbs) neutralizing the original Wuhan virus, expressed as recombinant IgG1. Our study confirmed that nAbs no longe...
• Multifractality in spin glasses AI翻译
  作者：Baity-Jesi, Marco; Calore, Enrico; Cruz, Andres; Fernandez, Luis Antonio; Gil-Narvion, Jose Miguel; Pemartin, Isidoro Gonzalez-Adalid; Gordillo-Guerrero, Antonio; Iniguez, David; Maiorano, Andrea; Marinari, Enzo; Martin-Mayor, Victor; Moreno-Gordo, Javier; Sudupe, Antonio Munoz; Navarro, Denis; Paga, Ilaria; Parisi, Giorgio; Perez-Gaviro, Sergio; Ricci-Tersenghi, Federico; Ruiz-Lorenzo, Juan Jesus; Schifano, Sebastiano Fabio; Seoane, Beatriz; Tarancon, Alfonso; Yllanes, David
  作者单位：Swiss Federal Institutes of Technology Domain; Swiss Federal Institute of Aquatic Science & Technology (EAWAG); University of Ferrara; Istituto Nazionale di Fisica Nucleare (INFN); Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - UAM - Institut de Fisica Teorica (IFT); University of Zaragoza; Complutense University of Madrid; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - UAM - Institut de Fisica Teorica (IFT); Universidad de Extremadura; Universidad de Extremadura; University of Siena; Sapienza University Rome; Consiglio Nazionale delle Ricerche (CNR); Istituto di Nanotecnologia (NANOTEC-CNR); Istituto Nazionale di Fisica Nucleare (INFN); Universidad de Extremadura; University of Zaragoza; University of Zaragoza; Consiglio Nazionale delle Ricerche (CNR); Istituto di Nanotecnologia (NANOTEC-CNR); University of Ferrara; Istituto Nazionale di Fisica Nucleare (INFN); Universite Paris Saclay; Centre National de la Recherche Scientifique (CNRS); Chan Zuckerberg Initiative (CZI)
  摘要：We unveil the multifractal behavior of Ising spin glasses in their low-temperature phase. Using the Janus II custom-built supercomputer, the spin-glass correlation function is studied locally. Dramatic fluctuations are found when pairs of sites at the same distance are compared. The scaling of these fluctuations, as the spin-glass coherence length grows with time, is characterized through the computation of the singularity spectrum and its corresponding Legendre transform. A comparatively smal...