Results 41 to 50 of about 4,056 (198)
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Platinum (Pt)‐based catalysts are crucial for the commercialization of hydrogen/metal air batteries, but they suffer from Pt scarcity, high cost, and nanoparticle dissolution/agglomeration, mainly leading to performance degradation. We address this by synthesizing a PtFe alloy catalyst (PtFe–PA–NC) via a phytic acid (PA) assisted pyrolysis ...
Chenyang Shu +9 more
wiley +1 more source
Study on Self-assembly Behavior and Multiple-stimuli-responsive Property of Azobenzene-based Amphiphilic Copolymers in Solution [PDF]
, 2016 环境响应聚合物分子链中含有特殊的响应基团，能够对外界环境的改变做出结构和性质的调整。许多科研团队致力于设计这类聚合物，并以此来丰富其在药物传送与释放方面的应用。偶氮苯由于有独特的光响应性和还原响应性，将其嵌入到聚合物中，通过光照或加入还原性物质便可调控其自组装聚集体的结构与实现药物分子的释放等，使其成为自组装领域的研究热点。本文先合成活性的偶氮苯单体，再将其与其他响应性单体通过RAFT法进行共聚，制备出含偶氮苯基团的多重刺激响应双亲共聚物，研究了共聚物的自组装行为、胶束的荧光及控制释放性能 ...
李奇
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Two‐dimensional MXene‐based materials have recently attracted attention in supercapacitors and lithium ion batteries due to their excellent electrochemical performance. However, the capacity and agglomerate limits the development of MXene‐based materials.
Han Zhang +4 more
wiley +1 more source
A new beef: An analysis of discourse coalitions in the nascent cellular agriculture policy subsystem
Review of Policy Research, Volume 42, Issue 6, Page 1404-1427, November 2025.Abstract A robust approach to examining the nature and influence of coalitions in the policy process is the Advocacy Coalition Framework (ACF), which is especially useful to study policy issues fraught with scientific and technical controversy. Yet, important gaps exist in ACF literature regarding nascent policy subsystems. Consequently, there is scant
Nikki Nadeau, Ramiro Berardo
wiley +1 more source
Shuitu Baochi Xuebao, 2011 研究了子午岭林区七种植被类型土壤>0.25 mm水稳性团聚体含量、团聚体破坏率和水稳性团聚体分形维数随植被恢复的变化规律以及这3个指标随土壤有机碳含量增加的变化规律。结果表明:植被恢复对>0.25 mm水稳性团聚体含量、团聚体破坏率和水稳性团聚体分形维数的影响可以达到70 cm土层;除白羊草群落外,0-70 cm土层上>0.25 mm水稳性团聚体含量随植被恢复逐渐提高,团聚体破坏率和水稳性团聚体分形维数随植被恢复逐渐减小,土壤结构随植被恢复逐渐改善。>0.25 mm水稳性团聚体含量 ...
马帅 +4 more
doaj
World Medical &Health Policy, Volume 17, Issue 3, Page 389-410, September 2025.ABSTRACT Despite the high prevalence of cervical and breast cancer, screening rates remain low in low‐income countries. Using nationally representative data, we examine factors associated with knowledge and uptake of cervical and breast cancer screening among married women ages 30–49 in Nepal.
Young‐ji Lee +2 more
wiley +1 more source
Trump, Personalism, and US Administrative Capacity
Politics &Policy, Volume 53, Issue 4, August 2025.ABSTRACT Donald Trump represents an extraordinary degree of personalism in American politics, especially given the traditional power and capacity of the Republican Party and American democracy. A lesson Trump drew from his first term in office is that he needed to better institutionalize mechanisms of personal loyalty to deal with perceived betrayals ...
Donald Moynihan
wiley +1 more source
Study on the sorption/desorption of PAHs and effects of MWCNTs on distribution of PAHs in mangrove sediment aggregates [PDF]
, 2014 红树林是热带、亚热带河口潮间带重要的生态系统。沿岸人类活动加剧，使PAHs大量进入红树林生态系统。红树林沉积物作为该生态系统中PAHs最重要的赋存场所，PAHs在其中的迁移、转化过程引起广泛的关注。吸附/解吸作为PAHs迁移、转化过程中的重要环节，控制生物富集、生物降解等诸多过程。目前实验室中考察吸附/解吸行为多以分散颗粒物为研究对象，然而现实环境中红树林沉积物以团聚体的形式存在，以沉积物团聚体为研究对象，考察PAHs的吸附/解吸行为具有重要的理论和实际意义。 第一部分绪论 ...
李锐龙
core
Institutions, in time: Designing feedback pathways for shared infrastructure transitions
Policy Studies Journal, Volume 53, Issue 3, Page 654-680, August 2025.Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley +6 more
wiley +1 more source
Shuitu Baochi Xuebao, 2020 利用田间定位试验研究旱作农田不同覆盖措施对土壤团聚体氮组分的影响。基于黄土高原8年冬小麦覆盖定位试验，试验设置生育期秸秆覆盖（SM）、生育期地膜覆盖（PM）和无覆盖对照（CK）3个处理。采用干筛法测定团聚体分布特征及不同粒径团聚体中全氮（STN）、微生物量氮（MBN）和潜在可矿化氮（PNM）含量。结果表明：（1）与CK处理相比，2种覆盖处理均未在各粒径团聚体全氮含量有显著变化，但SM处理相较于PM处理提高了0—10 cm土层的1.00~0.25 mm粒径团聚体STN含量（12.88%，P2.00，2 ...
张少宏 +4 more
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