Results 51 to 60 of about 16,479 (150)
The Role of Technology Standards in Strategic Hedging
Asian Politics &Policy, Volume 18, Issue 2, April 2026.ABSTRACT This article argues that technology standards provide Southeast Asian states with a distinct mechanism for hedging amid intensifying US–China technological rivalry. Traditional hedging strategies emphasizing economic engagement without political alignment are increasingly constrained by the weaponization of technological interdependence ...
Darren J. Lim, Anthea Roberts
wiley +1 more source
Policy Innovation in Barcelona and Utrecht: The Role of Advocacy Coalitions in Multilevel Contexts
Politics &Policy, Volume 54, Issue 2, April 2026.ABSTRACT This article explores how policy innovation in local social policies emerges within a multilevel governance context. Drawing on the Advocacy Coalition Framework (ACF), it examines how beliefs, coalitions, and institutional arrangements interact across different political arenas—European, national/regional, and local—to foster innovative social
Bruno Miguel Oliveira
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Dianci bileiqi, 1998 从非欧姆导电机理、老化机理的深化和完善、功能微观结构作用和控制、粉料预处理和制造技术等方面对zno压敏电阻片的基础理论研究进行了概括；并指出，从技术发展动态看，主要是降低残压比、提高单位体积的能量耐受能力、提高压敏电位梯度、提高长期老化性能。
1.西安交通大学电气绝缘研究所!西安 +1 more
doaj
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The detection of volatile organic compounds (VOCs) holds significant implications in environmental monitoring and disease diagnosis. Traditional gas detection technologies are constrained by complex operation and high cost, thereby failing to satisfy real‐time detection demands.
Yuening Wang +11 more
wiley +1 more source
Shiyou jixie, 2015 油管悬挂器是水下采油树的核心部件，其锁紧机构对油管悬挂器至关重要。阐述了油管悬挂器锁紧机构的组成、锁紧及解锁原理，确定了锁紧方案和解锁方案。对锁紧块在锁紧和解锁工况下的受力进行分析，得出2种工况下的推动环倾角均为45°。分析了单齿锁紧块和多齿锁紧块的受力情况和力传递途径，推导出单齿锁紧块和多齿锁紧块在X方向和Y方向的受力方程。建立了单齿轮廓和双齿轮廓的有限元模型，研究不同锁紧齿数对载荷传递路径的影响及不同路径应力分布。研究结果表明，2齿形的锁紧块结构更适合油管悬挂器的锁紧机构。
梅静 +4 more
doaj
, 2018 为研究椭圆钢管混凝土(ECFST)长柱的偏压性能,利用ABAQUS建立了偏压作用下椭圆钢管混凝土长柱的数值分析模型,考虑了钢管与核心混凝土的复杂接触问题、材料非线性问题和椭圆截面特征的影响,并利用试验结果验证了数值分析模型的准确性。对钢材强度、混凝土强度、偏心距、径厚比、长短轴比和截面面积等参数进行了分析,评价了各参数对偏压作用下椭圆钢管混凝土长柱轴压承载力的影响,揭示了其破坏模式和受力机理。研究结果表明,偏压作用下椭圆钢管混凝土长柱的破坏模式根据偏心距大小可以分为大偏压破坏和小偏压破坏 ...
於忠华, 沈奇罕, 王静峰
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT As a promising alternative to sluggish Li2CO3‐based Li‐CO2 electrochemistry, Li2C2O4 offers a favorable 2e− discharge pathway, yet its selective formation and reversible decomposition remain debated. Herein, we propose a nonmetal‐metal synergistic catalyst—B‐Ti coregulated layered transition metal boride Ti18B18O9/graphene (B‐Ti/TiBOG)—to ...
Qiong Peng +8 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The development of high‐performance and stable electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) plays a critical role in advancing clean energy technologies, including metal‐air batteries and hydrogen production through overall water splitting.
Chen‐Yu Cai +4 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT The evolution of the γ′−Ni3(Al, Ti) phase in superalloys is governed by a coupled coalescence‐ripening mechanism driven by elemental diffusion. In this study, thermal exposure experiments were performed at 750°C and 800°C for durations ranging from 100 to 20,000 h.
Zhaotian Wang +5 more
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
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