Results 41 to 50 of about 1,139,267 (146)
四川大学学报. 自然科学版, 2009 作者研究了初边值问题ut—Δu—u+|Δu|p=0,p∈（0,1）的非负古典解的有限时间熄灭,证明了熄灭现象的发生与区域Ω有关。对于Cauchy问题,上述方程的古典解在有限时间熄灭与否依赖于初值u0（x）在|x|→∞时的性态。
田娅, 穆春来
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Metal–organic framework (MOF) membranes are a novel class of composite membranes. They use crystalline porous MOF materials as separation layers or functional fillers. Because of their well‐ordered and tunable pore structures and highly controllable chemical environments, MOF membranes show broad application prospects in gas separation ...
Yanqing Qu +7 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT With the depletion of energy resources and the vigorous development of renewable energy technologies, the demand for efficient energy storage technologies has become increasingly urgent. Dielectric ceramics feature ultrafast charge–discharge speed, but low energy density and inferior efficiency hinder device miniaturization.
Junxuan Liu +14 more
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Guangtongxin yanjiu, 2009 文章基于带有各向异性完全匹配层（PML）吸收边界条件的紧凑二维频域有限差分法对八角格子光子晶体光纤（O-PCF）的模式和色散特性进行了研究。利用有效面积法分析了八角格子和六角格子光子晶体光纤（H-PCF）的基模和多模截止特性,得到非限制模、基模及多模的相图。比较发现,填充率和空气孔间距相同时,O-PCF的单模运转区域宽于H-PCF,更易用于色散补偿。
陈静, 谭晓玲
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT High‐yield photocatalytic H2O2 production in sacrificial agent‐free pure water constitutes a critical bottleneck requiring urgent advances in energy catalysis. Although ZnIn2S4 (ZIS) exhibits favourable visible light absorption, it is plagued by severe bulk charge carrier recombination and scarce accessible surface‐active sites.
Sheng Liu +7 more
wiley +1 more source
基于控制体—迎风有限元法的变压器绕组二维流体场—温度场耦合计算方法研究
Gaoya dianqi, 2021 针对电力变压器二维流体场和温度场的耦合问题,文中采用了基于控制体有限元法和迎风有限元法的流体场—温度场耦合计算方法。该耦合方法基于三角形网格,使用控制体有限元法计算绕组油流区域的速度场,应用流线迎风有限元法求解整体场域的温度分布。在速度场计算中引入速度提升方法解决了流体场仿真时出口边界出现的回流流动问题,并在温度场计算时提出了适用于线性三角形单元的流线迎风稳定参数取值方法,从而解决了温度场仿真时的数值振荡问题。应用所提方法计算分析了油浸式变压器绕组二维模型的油流及温度分布 ...
刘刚 +5 more
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Green Hydrogen in Brazilian Media: Dominant Narratives and Missing Dimensions of the Energy Trilemma
Politics &Policy, Volume 54, Issue 5, October 2026.ABSTRACT Media discourses help shape the visibility and legitimacy of energy transition pathways in the public sphere. This study examines how Brazilian mainstream newspapers framed green hydrogen and assesses the alignment of these narratives with the energy trilemma: energy security, environmental sustainability, and social accessibility. We analyzed
Flávia Mendes de Almeida Collaço +3 more
wiley +1 more source
, 2015 该文基于不可压NS方程,推导了有限水域条件下气泡的无量纲动力学方程,得到了与惯性力、黏性力、表面张力和不可凝结气体相关的四个无量纲数,通过数值求解的方法给出了无量纲参数对气泡振动的影响规律及其起作用的参数空间。最后,在小厚度小振幅条件下讨论了气泡振动的特性及适用范围 ...
王一伟 +4 more
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四川大学学报. 自然科学版, 1962 类似于对有限测度区域上的积分算子所得出的性质,在§1 中我们对无限测度区域上的积分算子导出一些性质。在§2 中我们推广A.H.Zemanian关于单调函数富里哀变换的估计。在§3中我们应用§1及§2的结果讨论富里哀积分的乘子的性质。
陆文端
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