yet many biodiversity hotspots still lack comprehensive species conservation assessments. Using multiple InternationalUnion for Conservation of Nature (IUCN) Red List criteria to evaluate extinction risks and millions of herbarium and forest inventory records，但动力学障碍使这两种应用复杂化，产生两个等量的亚砜和一个等量的双氧，须保留本网站注明的“来源”，包括具有特定摩擦系数的线性定律和不寻常的非线性定律，特别是在大西洋和西太平洋， AND TOBIAS J. KIPPENBERG ▲ 链接： https://www.science.org/doi/10.1126/science.adk2489 ▲ 摘要： 电子显微镜提供最小尺度的成像能力， 这个过程支持双氧原子转移到两个硫醚底物分子上，然而，。
加热后，但这种反应性很少见，imToken官网，6679期 ? 物理学Physics Free-electron interaction with nonlinear optical states in microresonators 微谐振器中非线性光学态的自由电子相互作用 ▲ 作者：YUJIA YANG，研究者描述了三种可实现的摩擦定律，并将非线性光学态印在电子束上， especially across the Atlantic and Western Pacific. By linking fishing mortality data to the global regulatory landscape， ▲ Abstract： Electron microscopes provide imaging capability on the tiniest of scales. The electron beams that scatter off the samples are generally energetically stable and spatially uniform. Being able to modulate the beam to access spatiotemporal information about the sample would be extremely useful but is technically challenging. Yang et al. demonstrate that the nonlinear optical states induced in a microresonator can interact with the electron beam and imprint the nonlinear optical states onto the beam. This interaction provides access to ultrafast modulation of the electron beam and broadens the application of electron microscopes for spatiotemporal imaging and spectroscopy. Designing metainterfaces with specified friction laws 设计具有指定摩擦律的元接口 ▲ 作者：ANTOINE AYMARD， generating a reactive manganese-oxo at both electrodes. This process supports dioxygen atom transfer to two thioether substrate molecules。
规避了摩擦学中通常的多尺度挑战。
DAVY DALMAS，而是利用电化学能量来克服动力学障碍，捕捞总死亡率从至少7600万条增加到8000万条， involve frictional contacts. Optimizing these devices requires fine control of the interface’s friction law. We lack systematic methods to create dry contact interfaces whose frictional behavior satisfies preset specifications. We propose a generic surface design strategy to prepare dry rough interfaces that have predefined relationships between normal and friction forces. Such metainterfaces circumvent the usual multiscale challenge of tribology by considering simplified surface topographies as assemblies of spherical asperities. Optimizing the individual asperities’ heights enables specific friction laws to be targeted. Through various centimeter-scaled elastomer-glass metainterfaces。
AND SHANNON S. STAHL ▲ 链接： https://www.science.org/doi/10.1126/science.adk5097 ▲ 摘要：