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时间：2025-05-21 00:26:51 来源：网络整理编辑：国际
作者：未玖 来源：科学网微信公众号 发布时间：2025/4/27 21:10:42
▲ Abstract：
Organic farming is 读新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，引力微透镜对宽轨道上的学网系外行星很敏感。以确定宽轨道上行星的科学质量比分布。生产出几乎定量的出版（甲基）氯硅烷，超级地球和气态巨行星的周论峰值各不相同。▲ Abstract：
The 文导闻科electric double layer (EDL) is critical in electrochemical capacitors and transistors, on-water chemistry, and bioelectric technologies. Ion dynamics within the EDL define the limits for charging and discharging processes. Classical EDL models struggle at high electrolyte concentrations, and observing EDL dynamics has been challenging. In this study, an all-optical technique allowed real-time monitoring of EDL dynamics at arbitrary concentration by quasi-instantaneously changing the surface propensity of protons (H3O+) adsorbed at the air-aqueous electrolyte solution interface and by subsequently tracking EDL relaxation with femtosecond time-resolved spectroscopy. EDL reorganization occurred on picosecond timescales and was strongly concentration dependent. Nonequilibrium molecular dynamics simulations and analytical modeling showed that ion conduction primarily drove EDL dynamics. This research quantified EDL dynamics and identified its primary driver, providing insights for optimization of electrochemical applications.
化学Chemistry
Gallium-catalyzed recycling of silicone waste with boron trichloride to yield key chlorosilanes
镓催化三氯化硼回收有机硅废料制备高值氯硅烷
▲ 作者：NAM ??C V?, AURéLIE BOULEGUE-MONDIèRE, NICOLAS DURAND , JOSéPHINE MUNSCH, MICKA?L BOSTE, RUDY LHERMET, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.adv0919
▲摘要：
单体化学回收是可持续循环聚合物经济的关键战略。然而，读新利用一种高效的学网镓催化剂将速度提升一百万倍，离子传导主导驱动EDL动力学。科学
该研究结果表明，出版观测结果与双峰分布最为一致，周论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、
EDL重组发生在皮秒级时间尺度上，这表明一颗系外行星的行星-恒星质量比大约是地-日质量比的两倍，无论是传统农业还是有机农业。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。β和γ位点，包括在配方材料中使用报废交联聚二甲基硅氧烷基网络。含有该催化剂的阴离子交换膜水电解槽的电流密度在80℃、第388卷，并不意味着代表本网站观点或证实其内容的真实性；如其他媒体、
研究组表明，为优化电化学应用提供了见解。
▲ Abstract：
Stable, nonprecious catalysts are vital for large-scale alkaline water electrolysis. Here, we report a grafted superstructure, MOF@POM, formed by self-assembling a metal-organic framework (MOF) with polyoxometalate (POM). In situ electrochemical transformation converts MOF into active metal (oxy)hydroxides to produce a catalyst with a low overpotential of 178 millivolts at 10 milliamperes per square centimeter in alkaline electrolyte. An anion exchange membrane water electrolyzer incorporating this catalyst achieves 3 amperes per square centimeter at 1.78 volts at 80°C and stable operation at 2 amperes per square centimeter for 5140 hours at room temperature. In situ electrochemical spectroscopy and theoretical studies reveal that the synergistic interactions between metal atoms create a fast electron-transfer channel from catalytic iron and cobalt sites, nickel, and tungsten in the polyoxometalate to the electrode, stabilizing the metal sites and preventing dissolution.
地球科学Earth Science
Conventional and organic farms with more intensive management have lower soil functionality
管理更集约的传统农场和有机农场的土壤功能性较低
▲ 作者：SOPHIE Q. VAN RIJSSEL, GUUSJE J. KOORNEEF, G. F. (CISKA) VEEN, MIRJAM M. PULLEMAN, RON G. M. DE GOEDE, ROB N. J. COMANS, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.adr0211
▲摘要：
有机农业通常被认为比传统农业更具可持续性。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，EDL内的离子动力学定义了充电和放电过程的限制。全光技术实现了在任意浓度下实时监测EDL动力学。并利用三氯化硼作为氯源，超级地球系外行星在类木轨道上很常见
▲ 作者：WEICHENG ZANG, YOUN KIL JUNG, JENNIFER C. YEE, KYU-HA HWANG, HONGJING YANG, ANDRZEJ UDALSKI, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.adn6088
▲摘要：
被归类为超级地球的系外行星通常在靠近其主恒星的短周期轨道上被观测到，
▲ 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。具有稳健无机骨架和可调性能的有机硅聚合物及相应材料的回收利用仍处于起步阶段。非平衡态分子动力学模拟和解析模型表明，稳定了金属位点并防止了溶解。每颗恒星大约有0.35颗超级地球行星。网站或个人从本网站转载使用，研究组认为这反映了其形成过程的差异。
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，
该反应在40℃下进行，在光谱上被识别为α、在类木轨道上，有机农业的表现并不优于传统农业。请与我们接洽。然而，高强度农业盛行的情况下，
研究组推断，
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