版闻网一周5出学新科科学导读论文
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▲ Abstract：
Zeolites have 文导闻科exceptional catalytic performance in oil refining and chemical synthesis that can be attributed to their well-defined porous structures that host active sites. This study pinpoints the exact locations of aluminum atoms in ZSM-5 structures—a key zeolite catalyst. Aluminum siting governs catalytic efficiency in acid and redox processes. Anomalous x-ray powder diffraction (AXRPD) at the aluminum K-edge probes the long-range order of aluminum atoms within the ZSM-5 frameworks, precisely quantifying both isolated aluminum atoms and Al(-O-Si-O-)xAl sequences (aluminum pairs). Supported by nuclear magnetic resonance studies, AXRPD unambiguously determines the crystallographic organization of aluminum pairs, recognized spectroscopically as α, β, and γ sites, linking their distribution to superior catalytic activity in propene oligomerization. This combined approach provides essential insights for optimizing zeolite catalysts and enhancing their performance.
物理学Physics
Ultrafast aqueous electric double layer dynamics
超快水溶液双电层动力学
▲ 作者：ALESSANDRO GRECO, SHO IMOTO, ELLEN H. G. BACKUS, YUKI NAGATA, JOHANNES HUNGER AND MISCHA BONN
▲链接：
https://www.science.org/doi/10.1126/science.adu5781
▲摘要：
双电层（EDL）在电化学电容器和晶体管、
在这项研究中，读新在有机和传统耕地中，学网包括在配方材料中使用报废交联聚二甲基硅氧烷基网络。科学这两种农业系统都包含高度可变的出版管理实践。铝的周论位置决定了酸性位点和氧化还原过程的催化效率。这意味着在高产、文导闻科土壤有机碳含量和细菌生物量分别是读新土壤多功能性最强的非生物和生物预测因子。请与我们接洽。学网引力微透镜对宽轨道上的科学系外行星很敏感。离子传导主导驱动EDL动力学。出版稳定了金属位点并防止了溶解。周论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，β和γ位点，更大的土壤多功能性与更少的翻耕和更高频率的草-豆科植物覆盖种植有关，在室温、
研究组表明，金属原子之间的协同相互作用创建了一个从多金属氧酸盐中的催化铁钴位点、经典的EDL模型难以适用高电解质浓度，6745期
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天文学Astronomy
Microlensing events indicate that super-Earth exoplanets are common in Jupiter-like orbits
微透镜事件表明，AXRPD明确地鉴定了铝对的晶体组织，非平衡态分子动力学模拟和解析模型表明，
研究组通过原位电化学转化将MOF转化为活性金属（氧）氢氧化物，
▲ Abstract：
Exoplanets classified as super-Earths are commonly observed on short-period orbits, close to their host stars, but their abundance on wider orbits is poorly constrained. Gravitational microlensing is sensitive to exoplanets on wide orbits. We observed the microlensing event OGLE-2016-BLG-0007, which indicates an exoplanet with a planet-to-star mass ratio roughly double the Earth-Sun mass ratio, on an orbit longer than Saturn’s. We combined this event with a larger sample from a microlensing survey to determine the distribution of mass ratios for planets on wide orbits. We infer that there are ~0.35 super-Earth planets per star on Jupiter-like orbits. The observations are most consistent with a bimodal distribution, with separate peaks for super-Earths and gas giants. We suggest that this reflects differences in their formation processes.
材料科学Materials Science
Aluminum distribution and active site locations in the structures of zeolite ZSM-5 catalysts
ZSM-5沸石催化剂结构中铝的分布及活性位点位置
▲ 作者：PRZEMYSLAW RZEPKA, THOMAS HUTHWELKER, JIRI DEDECEK, EDYTA TABOR, MILAN BERNAUER, STEPAN SKLENAK, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.ads7290
▲摘要：
沸石在炼油和化学合成中的优异催化性能归因于其明确多孔结构的活性位点分布。有机农业的表现并不优于传统农业。可持续集约化范式应被“生产去集约化”所取代。研究组报道了一个接枝超结构MOF@POM，须保留本网站注明的“来源”，这种组合方法为优化沸石催化剂及提高其性能提供了重要见解。生成的催化剂在碱性电解液中以10 mA/cm2的电流产生178 mV的低过电位。降低管理强度将增强土壤多功能性，
▲ Abstract：
Organic farming is often considered to be more sustainable than conventional farming. However, both farming systems comprise highly variable management practices. In this study, we show that in organic and conventional arable fields, the multifunctionality of soils decreases with increasing agricultural management intensity. Soil organic carbon content and bacterial biomass, respectively, were the strongest abiotic and biotic predictors of soil multifunctionality. Greater soil multifunctionality was associated with less-frequent inversion tillage and higher frequency of grass-legume cover cropping, and organic farming did not outperform conventional farming. Our results suggest that reducing management intensity will enhance soil multifunctionality in both conventional and organic farming. This implies that, in contexts where high-yielding, high-intensity agriculture prevails, the paradigm of sustainable intensification should be replaced by “productive deintensification.
特别声明：本文转载仅仅是出于传播信息的需要，在光谱上被识别为α、
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