Results 61 to 70 of about 841,672 (145)
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Osteoarthritis (OA) therapy remains constrained by the coexistence of irreversible cartilage loss and a persistently hostile joint microenvironment characterized by oxidative stress, synovial inflammation, and impaired tissue‐regenerative signaling.
Xinyu Wu +11 more
wiley +1 more source
四川大学学报. 自然科学版, 1992 应用一级反应的热动力学无量纲参数法,在25和下35℃乙醇—水混合溶剂中,研究了表面活性剂SDS和CTAB对苯甲酸乙酯皂化反应动力学的影响,测定了不同浓度的表面活性剂存在下的反应速度常数.结果表明,SDS胶束对反应有禁阻作用,CTAB胶束对反应基本无影响.
曾宪诚, 何明中, 邓郁, 李干佑
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Defect engineering plays a crucial role in regulating the active sites and reaction pathways of nanozymes. In this work, oxygen vacancies (Vo) were successfully introduced and stably regulated in ternary CoFeMo layered double hydroxide (CFM LDHs) via a microwave‐assisted hydrothermal strategy, leading to the construction of oxygen‐vacancy‐rich
Min An +8 more
wiley +1 more source
合闸弹簧疲劳状态下高压断路器弹簧操作机构应力分布及动力响应研究
Gaoya dianqi, 2019 弹簧操作机构是高压断路器的关键部件,其分合闸动力来源于分合闸弹簧,因此分合闸弹簧的疲劳状态对操作机构整体应力分布及动力响应影响巨大。用Pro/E对CT14型高压断路器弹簧操作机构进行总体建模,考虑主要元件连接及动力传递关系对所建模型进行合理简化,并应用HyperMesh有限元分析软件进行仿真分析,探究在合闸弹簧疲劳状态下弹簧操作机构各敏感单元（扇形板、分闸弹簧、拐臂、传动杆）应力分布变化情况及合闸动作响应变化情况。最后设计合闸弹簧疲劳状态下的弹簧操作机构敏感元件应力检测实验 ...
周国伟 +4 more
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT The rapid advancement of power electronics has created an urgent demand for high‐permeability, low‐loss soft magnetic materials to unlock the full potential of wide‐bandgap semiconductors and improve the efficiency of switching‐mode power supplies.
Wenbo Xiang +10 more
wiley +1 more source
Jixie chuandong, 1991 本文对一完整双联斜齿轮在动载荷和离心力作用下结构中的位移和应力场进行了计算研究。首先建立了双联斜齿轮的三维有限元模型,用[1]中的方法求得了相应结构振动最低几阶固有频率及振型。用模态坐标变换将有阻尼弹性系统二阶常微分有限元动态运动方程组转换成无耦合微分方程,根据系统计算出的真实动载荷用振型叠加法计算了双联斜齿轮的稳态响应。本文还研究了离心力对齿轮位移及应力分布的影响,并与齿轮结构中的动位移及动应力进行了对比分析。全文的计算是在微机上完成的。
刘更, 何大为, 沈允文, 高向群
doaj
Rare Metals, Volume 45, Issue 11, November 2026.ABSTRACT Capacitive deionization (CDI) using activated carbon (AC) electrodes holds great promise for seawater desalination, yet its practical application is severely constrained by the intrinsic hydrophobicity of carbon surfaces. Herein, we propose a solid‐state superhydrophilic modulation strategy that physically wet‐mixes superhydrophilic MOF ...
Ruiting Ni +4 more
wiley +1 more source
, 1987 本文介绍一种压电式应力计,它的主要性能是:测量量程为10-1000kgf/cm~2;响应时间小于7μs;线性误差小于士1％;综合应力测量误差小于±10％,该应力计可用于测量土、岩石和混凝土介质中的动态应力 ...
张挺, 金若冰
core +2 more sources
Gaoya dianqi, 2020 文中通过在动力学仿真软件中建立断路器运动仿真模型,设置不同程度的合闸弹簧应力松弛故障,分析了合闸弹簧应力松弛对断路器操动机构运动特性的影响;采集了断路器操动机构合闸弹簧在正常及应力松弛故障下的振动信号,提出一套基于小波包敏感频段能量法的断路器合闸弹簧应力松弛故障的诊断方法。试验表明,该方法能够有效地区分弹簧是否发生应力松弛故障。
杨韧 +7 more
doaj
World Food Policy, Volume 12, Issue 2, November 2026.ABSTRACT Prevailing levels of hunger, malnutrition, and food insecurity—driven by conflict, global economic crises, and ecological destruction—are threatening fulfillment of the right to adequate food. The integration of human rights in food systems policies can address these challenges; however, progress in the adoption of human rights–based ...
Ellen Johnson +4 more
wiley +1 more source