Results 51 to 60 of about 777,429 (171)
Gaoya dianqi, 2023 为深入研究气制变压器油在雷电冲击电压下的流注放电发展机理，文中通过搭建冲击电压放电实验平台，在流注起始电压阶段至加速电压阶段，对气制油中流注尖端电离过程和热效应引起的流注传播相关特征参量变化进行观测，以明确流注尖端电离过程和热效应在流注各个发展阶段的具体作用。研究结果表明，在流注起始阶段，流注的物理本质为局部气液相变化形成的低密度气体通道。在流注传播和击穿阶段，流注的物理本质为流注头部高场强导致的光电离过程，并在液体直接电离过程中导致气液相界面的持续产生 ...
陆怡冰 +4 more
doaj
The Problem With Problem Load: Reconceptualizing Load in the Multiple Streams Framework
Review of Policy Research, Volume 43, Issue 6, November 2026.ABSTRACT What happens when policymaking systems buckle under pressure, disrupting consensus and stalling decision‐making? Drawing on the Multiple Streams Framework, we show that the existing concept capturing this stress, Problem Load, has been both misinterpreted and overstretched.
Dana A. Dolan, Nikolaos Zahariadis
wiley +1 more source
四川大学学报. 自然科学版, 2015 高速公路交通流演化分形特征的研究有助于深刻理解高速公路交通系统的内在演化规律,为高速公路交通流的预测和控制提供理论依据.本文利用统计学方法和复杂网络可视化技术对高速公路交通流的分形特征进行实证分析.首先,利用重标极差法计算了交通流时间序列的Hurst指数和V统计量,发现不同时间标度下高速公路交通流时间序列的Hurst指数都大于0.5,并且V统计量曲线有上升趋势,说明高速公路交通流时间序列具有自相似性和长程相关性;然后,根据可视算法,将高速公路交通流时间序列转化为复杂网络,计算网络的拓扑参数 ...
史汉发, 王俊峰, 盛鹏
doaj
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Wearable sweat sensors face persistent trade‐offs between multiplexed detection, signal stability, and wearing comfort. Here, we present a Janus electronic skin (e‐skin) with dual‐mode functionality, offering both thermal and moisture comfort.
Zhi‐Mei Mu +12 more
wiley +1 more source
Dianci bileiqi, 2016 气体放电管由于通流量大、残压低等特性被广泛应用于设备的首级防护,但由于维持传统单级气体放电管放电的最低电压小于交流负载电压值,致使气体放电管长时间维持导通状态流过交流电流,造成线路对地短路。通过分析产生续流的原因,增加放电管的放电通道,采用石墨多级气体放电管进行组合波冲击试验,根据试验数据验证多级气体放电管可有效减小续流和放电管导通放电时间,多级气体放电管也可以有效延缓残压的上升陡度,为设备提供更好的防护。
于梦琦, 李雪峰, 侯慧姝, 张亮
doaj
Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan +6 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2011 目的观察溶血磷脂酸（LPA）对豚鼠心室肌细胞单通道延迟整流钾电流的影响,探讨LPA在室性心律失常中的作用。方法 Langendorff离体心脏逆向灌流法分离豚鼠心室肌细胞,随机选取心室肌细胞分为对照组、LPA（10μmol.L-1）组及LPA（10μmol.L-1）+PTX（1μmol.L-1）组。应用细胞贴附式方式记录心室肌细胞延迟整流钾电流（Ik）,分析LPA对Ik通道动力学的影响。结果 LPA组心室肌细胞通道开放时间,开放概率明显低于对照组 ...
张文杰 +5 more
doaj
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Balancing low iridium dosage and robust anodic stability remains a critical hurdle for practical proton exchange membrane water electrolysis (PEMWE). Although IrRuOx offers a cost‐effective alternative, current systems still suffer from the dual dilemma of excessive noble‐metal reliance and inadequate long‐term durability. Herein, we developed
Hang‐Xing Ren +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun +8 more
wiley +1 more source
Bidirectional Interfacial Chemical Regulation Enables Durable Aqueous Zn‐I2 Batteries
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Aqueous Zn‐I2 batteries hold great promise for large‐scale energy storage, yet their practical deployment is hindered by coupled interfacial instabilities at both electrodes, where Zn‐anode parasitic reactions and cathodic polyiodide shuttle mutually aggravate each other.
Zimian Jia +8 more
wiley +1 more source