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He jishu放射性核素在膨润土上的分配系数（Kd）是放射性废物处置库安全评价中的关键参数之一。本研究旨在使用机器学习（Machine Learning，ML）模型可靠地预测多种放射性阳离子在膨润土中的Kd值。该研究基于日本原子能机构吸附数据库（Japan Atomic Energy Agency's adsorption database，JAEA-SDB），收集10种核素（Am、Bi、Cm、Cs、Eu、Ni、Pb、Po、Ra、U）在膨润土中的1 240组Kd数据，选取9个输入因子，构建了包括随机森林（Random
杨 馨, 张 坤明, 陈 涛
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考虑物流特性用于削峰填谷的纯电重卡双层协调优化调度方法 [PDF]
全球能源互联网针对纯电重卡大规模充电给电网带来的负荷峰值大、运行成本高等问题，提出了用于削峰填谷的双层协调优化调度方法。首先，考虑物流特性对纯电重卡进行负荷预测，并获取纯电重卡的行驶行为，得到充电负荷曲线，同时利用模糊C均值聚类将充电负荷分为可调度与不可调度两类，计算其可调度潜力；其次，以总负荷方差最小为目标函数，构造上层优化模型，制定纯电重卡日充电方案；然后，将上层寻优的日充电方案传递到下层，考虑柔性时间窗约束，以纯电重卡运行成本最低为目标函数，构造下层优化模型，实现考虑充电负荷方差与运行成本的双层优化调度；最后 ...
胡文东 +4 more
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He jishu铅基快堆作为极具发展潜力的第4代核能系统，具有良好的非能动安全性和经济性，但在紧急停堆后上腔室内容易产生热分层现象，严重威胁反应堆运行安全。目前，铅基快堆热分层相关数据长期分散于各类文献中，且存在数据格式不统一、工况溯源性差等问题，严重限制了数值模拟与数据驱动方法的发展。本研究针对上述问题，系统检索了2004~2026年国内外公开发表的相关文献，经过严格筛选，共收集了32篇核心文献中的实验数据和数值模拟数据。数据集覆盖中国、俄罗斯、韩国和欧洲等不同国家和地区研发的典型反应堆和实验装置，涵盖稳态运行 ...
薛 可盈 +9 more
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Gaoya dianqi, 2022 电磁斥力的驱动时间关系到电磁斥力机构的驱动效率及所受冲击应力大小，该文提出优化电磁斥力驱动时间的研究思路，分别建立了线圈—盘式电磁斥力机构的有限元仿真模型及柔性体仿真模型，在输入能量一定的前提下，通过改变电容容量及其充电电压值来调整电磁斥力驱动时间，在此基础上研究其对电磁斥力机构驱动效果、运动过程及结构应力的影响。研究表明：在保证快速机械开关能够有效开断的范围内，充电电容越大，电磁斥力脉宽越大峰值越小，驱动时间越长，电磁斥力机构驱动效率越高，斥力盘内结构应力峰值越小，但缓冲装置所受冲击也越大 ...
刘俊翔, 彭和平, 莫文雄, 王勇
doaj
Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, EarlyView.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
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Microstructure Engineering Toward High Cost‐Effective Nd–Fe–B Sintered Magnets: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Nd–Fe–B sintered magnets, critical for enhancing electromechanical conversion efficiency and operational stability in wind turbines and electric vehicle drives, are prized for their outstanding coercivity, high remanence, and superior maximum energy product.
Dongmin Zhang +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Because of superior transportability and high energy capacity, methanol is regarded as a potential hydrogen carrier. Photocatalytic methanol dehydrogenation offers a sustainable and cost‐effective method for releasing hydrogen. Conventional photocatalysts face challenging obstacles, including the low catalytic efficiency and rapid ...
Rundong Chen +9 more
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Recovering Critical Elements From Wastewater for Battery Materials: A Review
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Driven by global carbon neutrality goals, the transition toward a circular economy and sustainable resource management has become increasingly imperative. Given the indispensable role of battery technologies in modern energy storage systems, strategic elements such as lithium (Li), cobalt (Co), and nickel (Ni)—identified by the European ...
Ting Lei +5 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Biodegradable zinc (Zn)‐based materials are considered promising candidates for orthopedic applications because of their favorable mechanical properties, controllable biodegradability, and good biosafety profiles. However, their clinical translation is limited by early‐stage corrosion‐induced cytotoxicity and inflammation, as well as ...
Jinlong Mao +9 more
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Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT In electrocatalysis, traditional single‐atom catalysts (SACs) face challenges in achieving coordinated control of reaction pathways due to limitations such as single local energy levels and carrier recombination. By introducing an additional defect structure, it is possible to break the electronic structure symmetry, thereby activating SACs ...
Juanjuan Huo +8 more
wiley +1 more source