Results 21 to 30 of about 392,967 (160)
Metal‐Filamentary Memristor‐Based Artificial Neurons for Embodied Neuromorphic Intelligence
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Embodied neuromorphic intelligence represents a transformative paradigm for next‐generation intelligent systems, with broad implications for robotics, autonomous driving, intelligent manufacturing, and smart infrastructures. Neuromorphic chips enable bioinspired computing with sparse, heterogeneous representations and spatiotemporal dynamics ...
Tianci Huang, Zuqing Yuan, Qilin Hua
wiley +1 more source
Wildlife Letters, Volume 4, Issue 3, Page 107-117, September 2026.Human‐caused leopard deaths in Sri Lanka averaged 9.65 ± 4.5 records year−1 over 17 years (2008–2024; n = 164), with records highly clustered in the central highland mosaic ecosystem. Mortality was dominated by adult males and driven primarily by snaring in plantation landscapes, and indicating an increase approximately 0.7–0.8 deaths per year.
Sanjaya Weerakkody +11 more
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Shuitu Baochi Xuebao, 2007 通过对沙坡头地区不同植被类型沙地土壤表层水分时空变化特征的研究表明，该区不同植被类型沙地土壤表层水分的分布均符合正态分布，降雨使表层土壤水分的空间变异性减小，空间自相关性减弱，分维数减小，空间自相关范围由干旱时的5m左右内变化扩大到几十米，土壤表层水分的空间依赖性增强；在土壤表层水分含量极低的情况下，土壤表层水分的空间变异性规律与土壤水分含量的变化规律一致；在土壤水分含量不是很低的情况下，其空间变异性与土壤表层水分含量变化趋势相反，流沙地、柠条地A、柠条地B、油蒿地 ...
潘颜霞 +3 more
doaj
Functional Ecology, Volume 40, Issue 9, Page 2726-2736, September 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
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土壤呼吸作用时空动态变化及其影响机制研究与展望. [PDF]
, 2009 测定不同陆地生态系统土壤呼吸速率及其时空波动,阐明其影响因子,对于全球碳素平衡预算和全球变化潜在效应估计是最为基本的数据。然而,有关土壤呼吸作用变异性及其影响因素的知识仍存在局限性,一些关键的过程和机制还有待阐明。该文综述了近年来土壤呼吸作用时空动态规律、影响机制和模拟方面的研究进展,指出环境因子和生物因子共同驱动着土壤呼吸作用的时间动态变化;土壤呼吸作用在不同时间尺度上还具有明显的空间异质性,这主要是植被覆盖、根系分布、主要的环境因素和土壤特性空间分布的异质性造成的 ...
韩广轩, 周广胜., 周广胜
core
Shuitu Baochi Xuebao, 2019 针对盐渍化灌区土壤盐渍化问题，以河套灌区下游乌拉特灌域为研究区，通过野外实测与室内试验分析结合，采用统计学方法地质统计学原理分析表层土壤（0—20，20—40 cm）及深层土壤（40—100 cm）含水率与盐分（EC值）时空分布和变异规律，以及探求地下水埋深对土壤盐分的影响。结果表明：（1）除6月0—20 cm（9.779%）外，表层土壤含水率变异系数均在12.384%~19.667%，属于中等变异性，深层土壤含水率变异系数较小，在3.513%~9.757%，属于弱变异性）表层土壤盐分（EC值 ...
窦旭 +6 more
doaj
Shuitu Baochi Xuebao, 2022 在全球气候变暖的背景下, 干旱灾害日趋频发。为全面精细研究华中地区降水的时空变化, 结合水汽(PWV)、增强型植被指数(EVI)等数据, 基于地理加权回归模型, 结合克里金插值分别对2010—2019年的GPM IMERG和TRMM 3B43数据进行空间降尺度, 并利用区域内53个气象站数据进行精度评价。对优选的降尺度数据采用变异系数法、Theil-Sen Median趋势分析耦合Mann-Kendall显著性检验方法及Hurst指数法, 分析了华中地区的降水时空变化特征及其可持续性特征 ...
张寒博 +5 more
doaj
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The demand for advanced aerospace components necessitates near‐α titanium alloys with enhanced high‐temperature performance and compatibility with additive manufacturing (AM). To address this, an in situ alloying strategy was employed to co‐modify a Ti‐6.5Al‐2Zr‐Mo‐V alloy with Si and Y during laser powder bed fusion.
Zishuo Ma +10 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 土壤侵蚀是现代地理环境条件下改变地貌景观的主要过程，也是引起土壤质量退化、沙漠化与石漠化的核心因素，与土壤、生态、水文等多个地表过程密切相关。虽然土壤侵蚀研究需要气候、地质、地貌、土壤、水文、生态等相关学科的基本知识，分析土壤侵蚀发生、发展过程的动力机制，但需要明确界定土壤侵蚀研究的时空尺度。土壤侵蚀与水土保持之间相互联系、相互促进。土壤侵蚀研究的时间尺度以次降雨、月、年为主，研究主题为次降雨侵蚀过程、土壤侵蚀季节变化与年际变化，时间尺度不宜超过100年。土壤侵蚀研究的空间尺度以小流域为主 ...
张光辉
doaj
Coupled Structural Characteristics Boost Brazing Performance of Ti2AlNb Alloy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Brazing of Ti2AlNb alloy is a pivotal technique for new generation aero‐engine lightweight structures, yet developing novel filler metal and achieving the extraordinary performance of titanium alloy brazed joints remains challenging. Here, this study designed an innovative filler metal (Ti70‐xZrxCu15Ni15) and developed inspired coupled ...
Yinchen Wang +13 more
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