Results 31 to 40 of about 26,411 (164)
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT By adding CuO, the worm‐like amorphous phase and atomic clusters were simultaneously introduced, enabling the (Ni40Ti40Cu20)99.9O0.1 alloy micron columns to exhibit a uniform flow strain of over 40% and a strength of over 2.5 GPa during compression.
Huwen Ma +13 more
wiley +1 more source
Gaoya dianqi, 2001 介绍了非线性负荷的种类及其用电特性 ;分析了非线性负荷对电力系统及电器设备的危害 ;提出了分析非线性负荷时所采取的数学模型 ,论述了在解决实际问题时非线性负荷的处理方式。
薛军, 汪鸿, 华峰, 刘军成
doaj
Calculation of Coefficient of Thermal Expansion based on CALPHAD and Effective Medium Method [PDF]
, 2016 材料的热膨胀系数是一项重要的热物理量，当材料使用时所处的温度环境变化剧烈时，需要对材料的热膨胀系数给予重视。材料的热膨胀系数受晶格结构，显微结构等尺度因素的影响，但是目前已有的多种热膨胀模型，分散在各个尺度下，缺少多尺度的集成计算。因此，十分需要建立多尺度计算模型对材料的热膨胀系数进行集成计算。本研究基于计算相图方法，以及有效介质理论，开展了材料热膨胀系数的多尺度计算，具体研究内容如下： (1)基于计算相图(CALPHAD)方法，构建了二元及三元合金溶体相的热膨胀系数计算模型 ...
李晓菲
core
Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Sodium‐ion batteries (SIBs) have emerged as promising candidates for large‐scale energy storage due to their cost‐effectiveness and resource abundance. However, challenges such as sluggish ion diffusion kinetics, structural degradation, and interfacial instability hinder their practical applications.
Yunze Wang +7 more
wiley +1 more source
Gaoya dianqi, 2012 由于绝缘材料的电阻率具有非线性和各向异性,故在计算换流变压器阀侧绕组直流电场时需要考虑到绝缘材料的非线性和正交各向异性。笔者采用ANSYS二次开发技术,计算了在考虑绝缘材料电阻率随场强和温度变化情况下的非线性直流电场及非线性各向异性直流电场。计算结果表明,在考虑绝缘材料电阻率非线性和各向异性的情况下,电场分布与不考虑这些条件下的分布有很大的不同。因此,换流变压器阀侧绕组的直流电场应该按非线性各向异性场计算。
李晓辉 +3 more
doaj
Nonlinear finite element analysis for seismic performance of high-strength concrete beam-column joints with new reinforcement details [PDF]
, 2006 Because the factors that affect the behavior of the beam-column joints are complicated, an experimental study alone is not sufficient. Therefore, a nonlinear finite element analysis was conducted to provide better understanding of the performance of the ...
Gan, L, Li, J, Pam, HJ
core
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract Illegal wildlife trade (IWT) is one of the largest global illegal activities, and it negatively affects biodiversity and sustainable development worldwide. DNA barcoding coupled with high‐throughput sequencing (i.e., metabarcoding) is useful in identifying taxa affected by IWT and has been used routinely for decades.
Maria Joana Ferreira da Silva +9 more
wiley +1 more source
Dianci bileiqi, 2002 介绍了固相法和共沉淀包膜法制备氧化锌非线性电阻粉体的工艺 ,并比较了两种粉体制备方法对氧化锌非线性电阻电性能的影响。与固相法相比 ,共沉淀包膜法极大的改善了氧化锌非线性电阻微观结构均匀性 ,因此提高了氧化锌非线性电阻的电性能 ...
王兰义 +4 more
doaj
energy transport in low-dimensional disordered systems [PDF]
, 2016 本论文研究低维无序系统的热传导以及能量输运性质，重点探索局域化和非线性相互作用所起的作用和引起的效应，揭示非线性作用对局域化的影响，特别是其引起的解局域化的机制和过程。我们发现对称与非对称相互作用都会引起一维局域化系统解局域化，但是它们对于系统的热传导行为以及解局域化的过程的影响有着定性的不同。相较于对称的相互作用来说，不对称的相互作用表现出更强的解局域化能力，而且在解局域化区域，不对称的相互作用的系统表现出正常的热传导；而对称的相互作用的系统的热传导依然是反常的 ...
汪剑津
core
Hobbyist preferences for pet freshwater turtles
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract The burgeoning pet trade is a primary threat to wild freshwater turtles worldwide. Although the risks from commercial exploitation of turtles have been discussed widely, there is little empirical research on preferences for pet turtles from a hobbyists’ perspective.
Jingjing Zhao +7 more
wiley +1 more source