导读闻网版学新论文5出一周科科学
▲ Abstract：
Organic farming is 学网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，非平衡态分子动力学模拟和解析模型表明，科学研究组表明，出版稳定了金属位点并防止了溶解。周论
▲ 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。通过准瞬时改变吸附在空气-水电解质溶液界面上的读新质子（H3O+）表面倾向，第388卷，学网
▲ Abstract：
Exoplanets classified as super-Earths are 科学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。超级地球和气态巨行星的出版峰值各不相同。并将这些位点分布与丙烯低聚化的周论优越催化活性关联起来。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、在室温、将这一事件与微透镜巡天的更大样本结合起来，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，
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，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、
EDL重组发生在皮秒级时间尺度上，在类木轨道上，在有机和传统耕地中，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。
▲ Abstract：
Chemical recycling to monomers is a key strategy for a sustainable circular polymer economy. However, most efforts have focused on polymers with carbon backbones. Recycling of silicone polymers and corresponding materials, featuring a robust inorganic backbone and tunable properties, remains in its infancy. We present a general method for depolymerization of a very wide range of silicone-based materials and postconsumer waste, including end-of-life cross-linked polydimethylsiloxane-based networks within formulated materials. The reaction proceeds at 40°C, harnessing an efficient gallium catalyst for a million-fold rate enhancement and boron trichloride as the chlorine source, to produce nearly quantitative yields of (methyl)chlorosilanes, key intermediates in the Müller-Rochow process that anchors the silicone industry.
Polyoxometalated metal-organic framework superstructure for stable water oxidation
多金属氧酸盐金属有机骨架超结构助力稳定水氧化
▲ 作者：KAIHANG YUE, RUIHU LU, MINGBIN GAO, FEI SONG, YAO DAI, CHENFENG XIA, ET AL.
▲链接：
https://www.science.org/doi/10.1126/science.ads1466
▲摘要：
稳定的非贵金属催化剂对于大规模碱水电解至关重要。
研究组提出了一种用于解聚广泛有机硅材料及消费后废料的通用方法，降低管理强度将增强土壤多功能性，利用一种高效的镓催化剂将速度提升一百万倍，
该反应在40℃下进行，研究组报道了一个接枝超结构MOF@POM，以确定宽轨道上行星的质量比分布。
在这项研究中，
该研究结果表明，1.78 V时达到3 A/cm2，
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