梅州唯一入选河流！五华河入选2026年全国幸福河湖建设名单

他们还通过频率可调无线电系统实验验证了该滤波器的自然周论运行性能。该方法利用易得的出版三氟甲基芳烃作为类卡宾前体，这些发现凸显了将溢出效应明确纳入全球政策框架的文导闻科潜力，当中性粒细胞被清除或阻断IL-1β产生后，读新并不意味着代表本网站观点或证实其内容的学网真实性；如其他媒体、 

▲ Abstract： Here we report a SW ladder filter architecture requiring only a single external magnetic bias,自然周论 which is enabled by modern micromachining fabrication methods capable of wafer-scale production. The filters developed in this work demonstrate loss as low as 2.54?dB, bandwidths up to 663?MHz, centre-frequency tuning over several octaves from 7.08 to 21.6?GHz and high linearity with an input-referred third-order intercept point of more than 11?dBm in the passband. The operation of the filter is also experimentally demonstrated in a frequency-tunable radio system.    

化学Chemistry   

Electrochemical defluorinative Matteson-type homologation 

电化学脱氟马特森型同系化反应    

▲ 作者：Tsoh Lam Cheung, Yujun Li, Peiqi Zhang, Zhiyi Yang, Yangjian Quan & Hairong Lyu

▲链接：

https://www.nature.com/articles/s41586-025-10002-4 

▲摘要：研究者报道了一种马特森型同系化反应。局部释放白细胞介素-1β，出版进而这种结构作为扩展适应特征，文导闻科维持能量稳态中的读新生理功能。并自负版权等法律责任；作者如果不希望被转载或者联系转载稿费等事宜，学网使鸟类在高海拔迁徙过程中仍能维持视网膜功能。自然周论依赖视网膜神经元中的出版无氧糖酵解维持功能。

▲ Abstract： Here we report a Matteson-type homologation,文导闻科 which integrates these three transformations into a one-pot electrochemical process. This proof-of-concept approach combines electroreductive defluorination with boronate rearrangement, eliminating the need for organolithium reagents, cryogenic conditions or specialist setups. The available trifluoromethylarenes are used as carbenoid precursors, expanding the scope of the Matteson reaction. Comprehensive mechanistic studies, including identification of key reaction intermediates, density functional theory calculations and electrochemical analysis, confirm the involvement of boronate formation and rearrangement in this e-Matteson homologation.    

生态学Ecology   

Protected area management has significant spillover effects on vegetation 

保护区管理对植被产生显著的溢出效应    

▲ 作者：Graeme S. Cumming

▲链接：

https://www.nature.com/articles/s41586-025-09837-8 

▲摘要：研究者以澳大利亚12513个候选保护区为样本，

▲ Abstract： Here we demonstrate the realization of a new platform consisting of large-scale 2D arrays of sub-nanometre precision-engineered atom-based quantum dots (15,读新000 sites) to simulate strongly interacting, low-temperature physics. By observing a metal–insulator (MI) transition on a 2D square lattice of atom-based quantum dots, we demonstrate independent and precise control of the on-site interaction U and tunnelling t. Magneto-transport measurements further indicate the formation of an insulating state driven by Mott–Hubbard/Anderson physics and promising signatures of correlated electron physics. These precision-engineered analogue quantum simulators provide a unique platform to simulate quantum materials on arbitrary 2D lattices and to explore many unanswered questions in the formation of quantum magnetism, interacting topological quantum matter and unconventional superconductivity.    

Spin-wave band-pass filters for 6G communication 

用于6G通信的自旋波滤波器    

▲ 作者：Connor Devitt, Sudhanshu Tiwari, Bill Zivasatienraj & Sunil A. Bhave

▲链接：

https://www.nature.com/articles/s41586-025-10057-3 

▲摘要：研究者报告了一种仅需单一外部磁偏置的自旋波滤波器架构，导致在反复β3-肾上腺素能刺激下白色脂肪组织质量减少。学网密度泛函理论计算及电化学分析在内的系统性机理研究，研究者揭示了中性粒细胞来源的IL-1β在代谢应激状态下维持脂质储备的关键作用，但其内层视网膜却在长期无氧状态下运作，相互作用拓扑量子物质以及非常规超导等诸多未解之谜。这种精密设计的模拟量子模拟器为在任意二维晶格上模拟量子材料提供了独特平台，会诱导中性粒细胞发生短暂且具有部位特异性的浸润，高达663 MHz的带宽、研究者证实了该电化学马特森同系化反应中硼酸酯形成与重排过程的存在。从而抑制脂肪分解，该平台由大规模二维阵列（包含15000个位点）的亚纳米精度原子量子点构成，这表明内部管理对邻近区域具有调节作用。尤其是在富含脂质的白色脂肪组织（如内脏白色脂肪）中。阐明了先天免疫细胞在限制脂质流失、

▲ Abstract： Here, to address this gap, I explored influences on the effect sizes of vegetation spillovers from a candidate 12,513 Australian protected areas, defining spillovers as the difference in vegetation outside a protected area that occurs as a consequence of the existence of the protected area. In 2020, 71% (2,189) out of the 3,063 protected areas for which full analysis was possible had a positive spillover effect of 0.1 or greater on at least 1 of 10 vegetation cover classes. Many protected area types were significant predictors of spillover magnitude. The covariance explained by protected area type with local and contextual variables was 14%, suggesting that internal management moderates adjacent locations. These findings highlight the potential to include spillover effects explicitly in global policy frameworks and suggest a pathway to an empirical basis for monitoring and accounting schemes that support biodiversity conservation and ecosystem service provision adjacent to protected areas.    

 生物学Biology   

Oxygen-free metabolism in the bird inner retina supported by the pecten 

栉膜支持的鸟类视网膜内层无氧代谢    

▲ 作者：Christian Damsgaard, Mia Viuf Sk?tt et al.

▲链接：

https://www.nature.com/articles/s41586-025-09978-w 

▲摘要：研究者发现，并为建立支持保护区周边生物多样性保护与生态系统服务的监测核算体系提供了实证基础路径。

多种保护区类型是预测溢出规模的重要指标。并观测到关联电子物理学的特征信号。该架构依托于可实现晶圆级生产的现代微机械加工工艺。

编译｜李言

 Science, 19 February 2026, Volume 650 Issue 8102 

《科学》2026年2月19日，并通过分泌白三烯B4实现。

研究者开发的滤波器实现了低至2.54 dB的插入损耗、以及通带内输入三阶截点大于11 dBm的高线性度。脂肪分解加剧，可用于模拟强相互作用的低温物理过程。为无氧状态的内层视网膜提供葡萄糖并清除乳酸。 

▲ Abstract： Here we report that β3-adrenergic activation of adipocytes induces a transient and depot-specific infiltration of neutrophils into white adipose tissue (WAT), particularly in lipid-rich visceral WAT. Neutrophil recruitment requires the stimulation of both lipolysis and p38 MAPK in adipocytes, and is mediated by the secretion of leukotriene B4. Recruited neutrophils undergo activation in situ, and locally secrete IL-1β, which suppresses lipolysis and limits excessive energy loss. Neutrophil depletion or blockade of IL-1β production increases lipolysis, leading to reduced WAT mass after repeated β3-adrenergic stimulation. Together, these findings reveal a role of neutrophil-derived IL-1β in preserving lipid stores during metabolic stress, highlighting a physiological function of innate immune cells in limiting lipid loss and maintaining energy homeostasis.

被募集的中性粒细胞在原位活化，他们将“溢出效应”定义为：因保护区的存在所导致的其外部植被变化。中性粒细胞的募集需要脂肪细胞中脂肪分解与p38丝裂原活化蛋白激酶通路的双重激活，由莫特—哈伯德/安德森物理机制驱动的绝缘态已经形成，无需有机锂试剂、研究者认为，8102期 

Large-scale analogue quantum simulation using atom dot arrays 

利用原子点阵列的大规模模拟量子模拟    

▲ 作者：M. B. Donnelly, Y. Chung et al.

▲ 链接： https://www.nature.com/articles/s41586-025-10053-7 

▲摘要：研究者展示了一种新型平台的实现方案。

研究者提供的证据表明，综上，

▲ Abstract： Here we show that, while the photoreceptor outer segments in the outer retina have access to oxygen, the inner bird retina operates under chronic anoxia, supported by anaerobic glycolysis in the retinal neurons. We provide evidence that the pecten oculi—a uniquely vascularized structure in the vitreous humour of birds, the function of which has been debated for centuries5,6,7,8,9—supplies the anoxic inner retina with glucose and removes lactic acid. We suggest that the pecten’s metabolic support of the bird retina’s anoxia tolerance enabled first the evolution of a thick cell-dense, avascular retina, which secondarily served as an exaptation enabling retinal function during high-altitude migrations.    

Neutrophils preserve energy storage in sympathetically activated adipocytes 

中性粒细胞维持交感神经激活状态下脂肪细胞的能量储备    

▲ 作者：Seunghwan Son, Cindy Xu et al.

▲链接：

https://www.nature.com/articles/s41586-025-09839-6 

▲摘要：研究者发现，71%（2189个）在10种植被覆盖类型中至少有一类产生了0.1或以上的正向溢出效应。