Results 31 to 40 of about 4,642 (117)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The realization of bifunctional perovskite devices integrating photovoltaic (PV) and light‐emitting diode (LED) capabilities requires precisely controlled grain architectures to facilitate dual carrier transport pathways. In this work, sulfaguanidine (SG) molecules were introduced into the perovskite solution to reconstruct the crystallization
Jiong Li +7 more
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Competence Development and Evaluation Dynamics in the Context of Learning
Risk, Hazards &Crisis in Public Policy, Volume 17, Issue 1, March 2026.ABSTRACT Organizations operating in high‐risk environments rely on learning from real incidents, yet how evaluation practices contribute to competence development and organizational learning remains insufficiently understood. This challenge is evident in police operations, where decisions made under uncertainty have immediate implications for safety ...
Ensieh Roud, Riana Steen, Marita Aune
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浓度与pH互作下表没食子儿茶素没食子酸脂（EGCG）对黄壤Al、Fe、Mn迁移的影响
Shuitu Baochi Xuebao, 2017 对淋溶环境下黄壤的Al、Fe、Mn浓度进行分析，探讨浓度与pH互作下表没食子儿茶素没食子酸脂（EGCG）对黄壤Al、Fe、Mn迁移的影响。采用二因素四水平完全随机试验，用48个不同浓度和pH组合的EGCG溶液对黄壤进行间歇淋溶，测定淋出液中Al、Fe、Mn浓度，分析黄壤Al、Fe、Mn迁移总量和迁移过程。结果表明，黄壤Al、Fe、Mn迁移总量在浓度与pH互作下均有显著差异；高浓度（5.00 mmol/L）、高pH（5.5）EGCG溶液有利于Al和Fe的迁移，迁移总量分别为180.24 mg/L和41 ...
张俊思 +7 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The transformative potential of gallium nitride high electron mobility transistors (GaN HEMTs) in advancing carbon‐neutral power systems remains bottlenecked by contact resistance (Rc) at the metal–semiconductor (M‐S) interface, a critical determinant of switching losses and frequency response.
Ji‐Zhou Zhang +8 more
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Gaoya dianqi, 2015 针对高压直流盘形悬式瓷或玻璃绝缘子离子迁移问题,以直流绝缘子离子迁移试验标准为基础,对国内外直流绝缘子离子迁移的机理研究和开发的试验系统进行了分析和调研,设计了完整的直流绝缘子离子迁移试验系统和方案,并开发了一套基于MSP430单片机的直流绝缘子体电流采集处理系统,实现了50路体电流信号和1路电压信号的的循环测量和数据采集,体电流测量结果自动量程转换。整套系统满足直流绝缘子离子迁移试验标准要求,具有一定的工程实用性。
骆晓龙, 张晋寅, 张源斌
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Polycrystalline SnSe thin film materials have gained increasing attention as a promising solution for fabricating microscale, flexible, self‐powered electronic components in the field of thermoelectric (TE) materials and devices. However, it is still a great challenge to simultaneously achieve preferred crystal orientation and optimize carrier
Wenxia Li +10 more
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Harnessing solar energy for self‐heating presents an effective strategy to suppress surface ice formation. In this paper, we fabricated nano‐silver‐modified multilayer graphene sheets (Ag@MGs) that integrate photothermal and superhydrophobic properties for anti‐icing applications.
Yihan Zhang +7 more
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Shuitu Baochi Xuebao, 2020 为探讨山地丘陵区农业小流域氮素迁移特征，对典型山地丘陵区农业小流域降雨—径流事件、水体氮素形态与浓度、时间变异特征及其迁移通量进行了全年观测研究。结果表明：（1）小流域水体氮素浓度存在显著季节变异特征，全年总氮（TN）平均浓度为2.14 mg/L，硝态氮（NO3-—N）平均浓度为0.77 mg/L，铵态氮（NH4+—N）平均浓度为0.25 mg/L，溶解性有机氮（DON）平均浓度为0.51 mg/L，其中NO3-—N是氮素迁移的主要形态；（2）小流域春季（3—5月）对全年氮素迁移通量贡献最高（43.56%
李红 +4 more
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Tijdschrift voor Economische en Sociale Geografie, Volume 117, Issue 1, Page 65-82, February 2026.Abstract This study examines how older adults from rural Yulin, China, navigate their transition to urban life after policy‐driven resettlement. They employ various strategies to bridge their rural past with their urban present: internal continuity (preserving rural identities, values and traditions) and external continuity (recreating familiar spaces ...
Huiyuan Pang +2 more
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Gaoya dianqi, 1998 用预放电电流法测量了SF6气体以及SF6/CO2混合气体的正负离子迁移率。实验数据表明,正负离子迁移率只是E/p的函数,SF6/CO2混合气体的正负离子迁移率随CO2含量的增加而增大。
王沛, 王中方, 张乔根, 邱毓昌
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