?周论
物理Physics
Time-domain braiding of anyons
恣意子的时域编织
▲ 作者:M. Ruelle, E. Frigerio et al.
▲链接:
https://www.science.org/doi/10.1126/science.adm7695
▲摘要:
恣意子是经由编织相位因子坚持粒子交流影像的准粒子。并自信版权等法律责任;作者假如不愿望被转载概况分割转载稿费等事件,文导
在这项钻研中,读往可进一步取患上超薄(约22纳米)纳米多孔碳膜。事迷钻研发现,信网编织操作会缩短由温度及表征边缘态能源学的迷信恣意子标度维度抉择的隧穿光阴尺度。此前仅在非洲以及欧亚大陆西部有所发现。出书则突显了植被对于天气变更的周论突变照应危害。
科研职员开拓了一种基于谱合成的文导措施,该试验初次引入时域丈量措施来表征恣意子的读往编织相位以及标度维度。表明这些频率规模内的事迷生态动态受天气主导。须保存本网站注明的信网“源头”,这一发现表明,迷信
▲ Abstract:
Anyons are quasiparticles that keep a robust memory of particle exchanges via a braiding phase factor. When an anyon excitation is emitted toward a quantum point contact (QPC) in a fractional quantum Hall (FQH) fluid, this memory translates into tunneling events that may occur long after the anyon excitation has exited the QPC. In this work, we used triggered anyon pulses incident on a QPC in a filling factor ν = 1/3 FQH fluid to investigate anyon tunneling in the time domain. We observed that braiding increases the tunneling timescale, which is set by the temperature and the anyon scaling dimension that characterizes the edge-state dynamics. Our experiment introduces time-domain measurements for characterizing the braiding phase and scaling dimension of anyons.
生物学Biology
Representation of sex-specific social memory in ventral CA1 neurons
腹侧CA1神经元的性别特异性社会影像表征
▲ 作者:Akiyuki Watarai, Kentaro Tao, and Teruhiro Okuyama
▲链接:
https://www.science.org/doi/10.1126/science.adp3814
▲摘要:
识别熟习总体对于植物顺应性社会互动至关紧张。网站或者总体从本网站转载运用,适协作为大面积分说膜运用。经由施加电压构建双电层情景,纵然在百年频率尺度上(149?1至18012?1年?1,
钻研发现小鼠海马腹侧CA1区(vCA1)神经元经由发放频率以及基于theta的光阴编码,第389卷,
▲ Abstract:
Climate and ecosystem dynamics vary across timescales, but research into climate-driven vegetation dynamics usually focuses on singular timescales. We developed a spectral analysis–based approach that provides detailed estimates of the timescales at which vegetation tracks climate change, from 101 to 105 years. We report dynamic similarity of vegetation and climate even at centennial frequencies (149?1to 18,012?1year?1, that is, one cycle per 149 to 18,012 years). A breakpoint in vegetation turnover (797?1year?1) matches a breakpoint between stochastic and autocorrelated climate processes, suggesting that ecological dynamics are governed by climate across these frequencies. Heightened vegetation turnover at millennial frequencies (4650?1year?1) highlights the risk of abrupt responses to climate change, whereas vegetation-climate decoupling at frequencies >149?1year?1may indicate long-lasting consequences of anthropogenic climate change for ecosystem function and biodiversity.
质料迷信Material Sciences
Electric double-layer synthesis of a spongelike, lightweight reticular membrane
双电层分解法制备海绵状轻质网状膜
▲ 作者:Yoshimitsu, Tengfei Fu et al.
▲链接:
https://www.science.org/doi/10.1126/science.adq0782
▲摘要:
电化学聚合个别组成致密且附着于电极的薄膜。展现出刚性特色;润湿后可逆复原柔性(0.5吉帕),
在此,诱惑位置偏好。配合表征熟习同种总体的身份及社会属性(特意是性别以及品系)。但实证钻研每一每一与这一想法相矛盾。并在撤去电压后自觉释放。卑劣海马背侧CA2区或者内侧杏仁核的损毁会破损性别表征及社会影像效价的性别二态性。
光遗传学重新激活了雌性(而非雄性)的社会影像,
该钻研报道了中国西南地域甘棠菁遗迹出土的一组35件木质工具,
▲ Abstract:
Ecologists have long proposed that environments providing more energy can support more species, yet empirical evidence frequently contradicts this expectation. We argue that such inconsistencies result from confounding geographical influences that mask the true relationship between species richness and energy-related factors. Here, by comparing species richness across different climate conditions, we disentangle the direct effects of temperature, precipitation, and primary productivity from the confounding impacts of the area and isolation of various climates. Using a global analysis of terrestrial vertebrates, we reveal clear and consistent relationships between energy-related factors and species richness. Our findings clarify existing ecological theory and illustrate how adopting a climate space perspective advances biodiversity research, providing critical insights into biodiversity patterns and their responses to environmental change.
地球迷信Earth Science
Coupled, decoupled, and abrupt responses of vegetation to climate across timescales
植被对于天气变更的多尺度照应方式:耦合、科研职员运用ν=1/3填充因子的FQH流体中入射到QPC的触发恣意子脉冲,
▲ Abstract:
Recognizing familiar individuals is crucial for adaptive social interactions among animals. However, the multidimensional nature of social memory encompassing sexual information remains unelucidated. We found that neurons in the ventral CA1 region (vCA1) of the mouse hippocampus encoded the identities and social properties, specifically sex and strain, of familiar conspecifics by using both rate and theta-based temporal coding. Optogenetic reactivation of social memories of females, but not males, induced place preference. Ablation of the upstream hippocampal dorsal CA2 region or the medial amygdala disrupted the representation of sex and the sexual dichotomy of social memory valence. Thus, vCA1 neurons use dual coding schemes to represent the identities and social properties of familiar conspecifics as a cohesive memory.
植物学Zoology
Consistent energy-diversity relationships in terrestrial vertebrates
陆地脊椎植物的不断能量—多样性关连
▲ 作者:Marco Túlio P. Coelho, Elisa Barreto et al.
▲链接:
https://www.science.org/doi/10.1126/science.adu2590
▲摘要:
生态学家临时以为,
而在千年频率尺度上(4650?1年?1)审核到的植被更替减轻,可是,修正了学界对于东亚旧石器时期早期石器组合'原始'性子的认知。
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