Results 21 to 30 of about 14,851 (148)
Rare Metals, EarlyView.ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo +6 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2022 为了促进全生命周期可拆卸钢结构和钢-混凝土组合结构的发展，完善相关受力性能评价方法和结构设计方法，针对新型可拆卸钢-混凝土组合梁抗剪连接件的受力机理和力学性能进行了试验研究。试件设计考虑不同的连接件（螺栓）直径（M20、M24）和材料强度（C50、C60混凝土），通过标准推出试验，分析了破坏模式、荷载-滑移响应、滑移和峰值荷载以及可拆卸性能等。通过将试验结果与中国、欧洲以及美国相关规范中针对组合梁栓钉抗剪连接件和螺栓紧固件抗剪承载力的计算方法进行对比分析 ...
班慧勇, 罗家伟, 王元清, 杨璐
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考虑信息节点失效的电力信息物理系统脆弱性评估方法 [PDF]
全球能源互联网, 2019 随着信息系统与电力物理系统的深度融合，现有电网系统正在向电力信息物理系统（cyber physical power system, CPPS）发展，CPPS不仅需要应对来自物理层面的破坏，还受到来自信息层面的威胁。针对电网所受的威胁，建立了信息物理层相互耦合的故障模型，提出了一种综合电力节点重要程度及信息网络拓扑结构的评估指标。在仿真研究中，攻击者对高指标节点进行信息攻击并导致其失效，电网以负荷削减最小量为目标进行优化调度，进而根据所提指标辨识耦合网络脆弱环节。以IEEE-30节点系统作为算例进行分析 ...
连祥龙, 张文浩, 钱瞳, 唐文虎
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Determination of ultimate bearing capacity of pile under static load test based on cusp catastrophe model [PDF]
There are many analysis methods to determine the ultimate bearing capacity of single pile by using the load-settlement curve obtained from the static load test, but so far, reasonable and theoretical calculation method to solve the ultimate bearing ...
Jibao YANG
core +1 more source
Rare Metals, EarlyView.ABSTRACT CoP has become a research hotspot for supercapacitor electrode materials because of its considerable theoretical capacitance and metalloid nature, but its commercial application remains hampered by structural instability and sluggish ion kinetics.
Gaoliang Wang +8 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The detection of volatile organic compounds (VOCs) holds significant implications in environmental monitoring and disease diagnosis. Traditional gas detection technologies are constrained by complex operation and high cost, thereby failing to satisfy real‐time detection demands.
Yuening Wang +11 more
wiley +1 more source
Current situation and development trend of mechanized shaft driving in frozen shaft [PDF]
In view of the energy occurrence structure of “rich coal, poor oil and little gas” in China, and the situation that coal will occupy the dominant position of energy consumption for a long time,The development history of frozen shaft mechanized drilling ...
Hang DING +6 more
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Rare Metals, EarlyView.ABSTRACT As a promising alternative to sluggish Li2CO3‐based Li‐CO2 electrochemistry, Li2C2O4 offers a favorable 2e− discharge pathway, yet its selective formation and reversible decomposition remain debated. Herein, we propose a nonmetal‐metal synergistic catalyst—B‐Ti coregulated layered transition metal boride Ti18B18O9/graphene (B‐Ti/TiBOG)—to ...
Qiong Peng +8 more
wiley +1 more source
Dianci bileiqi, 2018 针对雷击过电流导致铜芯输电线崩断和熔断现象,通过对导线通过瞬间大电流瞬间受到的机械效应和热效应的理论分析,选取一种材质相同工频载流量不同的黄铜线进行8/20μs波形雷电流冲击试验,得出铜线遭受雷电流发生崩断时受的机械力符合横向电场力和全部漂流电子对导线施加的反作用力的矢量和为机械力的理论;铜线遭受雷电流发生熔断现象符合当通过导线的瞬间电流足够大时,导线的状态取决于导线熔化决定因子值的大小的理论;铜线的崩断和熔断电流临界值以及铜线所能承受的机械力与铜线的工频载流量均呈正相关。
李祥超, 张其林, 薛奇, 徐黄飞
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