Results 21 to 30 of about 312,005 (152)
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang +6 more
wiley +1 more source
, 2023 前体/进气道一体化设计是高超声速飞行的关键技术,一体化设计的核心是前体与进气道在基准流场上的气动融合.针对腹部进气布局中前体压缩后的非均匀流影响进气道性能的问题,文章基于局部收缩比处处一致的思想,提出了离散等收缩比设计方法,实现了乘波前体/内转式进气道流向气动融合与遵循气动规律的变截面流道设计.将进气道的三维流场分解成一簇具有相同收缩比的三维流管,视每根流管侧壁为轴对称流场;以锥导乘波前体压缩后的非均匀流作为来流条件,以总压恢复为目标对每根流管进行优化设计;通过匹配激波反射位置将流管重新组合起来 ...
岳连捷 +4 more
core +1 more source
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT To overcome the challenges of the strength‐ductility trade‐off in laser additively manufactured (LAM) titanium alloys, and to avoid the intragranular microstructure degradation often caused by an exclusive focus on grain equiaxialization, this work proposes a novel strategy of “grain morphology‐intragranular microstructure co‐optimization ...
Kexin Zhao +8 more
wiley +1 more source
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
, 2001 通过数值计算表明了在空间浮区法晶体生长中利用非均匀磁场抑制自由面附近流体运动，这种局部作用来均匀减弱整体流场的有效性，及通过设计一定的磁场位形以达到减弱熔体流动的同时，提高杂质浓度沿生长界面分布均匀性的可能性 ...
胡文瑞, 李凯
core +1 more source
Microstructure Tailoring of Laser Powder Bed Fused Nb521 Alloy Toward Strength‐Ductility Synergy
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT Niobium‐based refractory alloys are promising candidates for high‐temperature aerospace structures, yet their limited ambient‐temperature ductility and poor processability remain major barriers to broader implementation. Here, Nb521 alloy was fabricated by laser powder bed fusion (LPBF), and the effects of processing conditions and subsequent ...
Lele Qin +7 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 4, August 2026.Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis +7 more
wiley +1 more source
Curve desigh of multi-parameter uniform B-spline blending function of order four(多形状参数的四阶均匀B样条曲线设计)
Zhejiang Daxue xuebao. Lixue ban, 2007 给出带有四个形状参数的四阶均匀B样条调配函数，它以三次均匀B样条基函数为特殊情况.基于所给出的调配函数，得到带多个形状参数的分段多项式曲线的生成方法.通过改变形状参数的取值，可以调整曲线的形状.选取不同的形状参数值，可以得到不同位置的C2连续曲线，这些曲线与三次均匀B样条曲线有相同的端点性质，并且给出曲线设计的实例.
ZUOChuan-gui(左传桂) +1 more
doaj +1 more source
Rare Metals, Volume 45, Issue 7, July 2026.ABSTRACT Mg‐based composites have been considered as promising structural materials for aerospace and automotive applications owing to their high specific strength and stiffness. However, their low room‐temperature ductility and absolute strength have limited their wide application.
Zhipeng Zhong +4 more
wiley +1 more source
Gaoya dianqi, 2016 为使直流特高压（ultra high voltage direct current,UHVDC）换流站阀厅连接金具的温升处在合理的范围内,建立合理的基于温升的阀厅连接金具设计方法至关重要。针对阀厅连接金具温升过高现象,通过试验结合理论分析原因,指出了由磁场引起的电流分布不均是阀厅连接金具温升过高的主要原因,提出了基于温升的特高压换流站阀厅连接金具设计方法,运用有限元（finite element method,FEM）的方法对阀厅连接金具的电流分布及温升进行仿真,优化连接金具的关键尺寸,使温升均匀分布 ...
王刚 +5 more
doaj