Results 21 to 30 of about 2,841 (84)

Rational Design of Multifunctional Nano–Architected Coatings for Bipolar Plates in Proton Exchange Membrane Fuel Cells

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Proton exchange membrane fuel cells (PEMFCs) require advanced bipolar plate coatings to enhance efficiency, durability, and commercialization potential. This review presents a systematic framework for evaluating and designing bipolar plate coatings, integrating material selection, performance metrics, deposition techniques, and future ...
Shijie Li   +12 more
wiley   +1 more source

Driving factors analysis of surface soil moisture variation in Zhangjiakou-Chengde district based on geodetector [PDF]

open access: yes
As an important water conservation and sand-windy barrier, Zhangjiakou and Chengde (Zhang-Cheng) district of Hebei Province is very important for ecological protection in the Beijing-Tianjin-Hebei region.
Aifang JIN   +4 more
core   +1 more source

Breaking Hardness–Toughness Trade‐Off in Novel (V, Nb)C Carbides via Nanoscale Phase Separation and Local‐Chemical‐Order Dislocation Network

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Transition metal carbides demonstrate exceptional mechanical properties but confront a critical hardness–toughness trade‐off. Spinodal decomposition‐mediated phase separation is an effective approach to enhance mechanical properties in carbide ceramics through high‐temperature treatment.
Zhi‐Xuan Zhang   +6 more
wiley   +1 more source

Historical and Cultural Legacy of Post‐One Child Policy: Is China Ready to Embrace Planned Oocyte Cryopreservation?

open access: yesWorld Medical &Health Policy, Volume 17, Issue 3, Page 580-588, September 2025.
ABSTRACT Women's reproductive rights in China are shaped by geopolitical and cultural factors, resulting in restricted access to planned oocyte cryopreservation (planned OC). While the global discourse surrounding planned OC continues to evolve, China currently sanctions egg freezing for medical purposes exclusively in married women, while prohibiting ...
Olivia M. Y. Ngan   +2 more
wiley   +1 more source

Borderline content and platformised speech governance: Mapping TikTok's moderation controversies in South and Southeast Asia

open access: yesPolicy &Internet, Volume 16, Issue 3, Page 543-566, September 2024.
Abstract Content moderation comes with trade‐offs and moral dilemmas, particularly for transnational platforms governing borderline content where the boundaries of acceptability are subject to debate. While extensive research has explored the legality and legitimacy of platformised speech governance in established democracies, few address the ...
Diyi Liu
wiley   +1 more source

Adaptive spatiotemporal management to reduce shark bycatch in tuna fisheries

open access: yesConservation Biology, Volume 38, Issue 4, August 2024.
Abstract Purse‐seine tropical tuna fishing in the eastern tropical Pacific Ocean (EPO) results in the bycatch of several sensitive species groups, including elasmobranchs. Effective ecosystem management balances conservation and resource use and requires considering trade‐offs and synergies.
Guillermo Ortuño Crespo   +4 more
wiley   +1 more source

Investment projects and the protection of indigenous peoples and territories in Colombia

open access: yesLatin American Policy, Volume 15, Issue 2, Page 288-319, June 2024.
Abstract This article addresses the protection of indigenous peoples and their natural habitats in Colombia when investment projects are planned or implemented. Special attention is paid to the mechanisms of prior informed consultation; and free, prior, and informed consent. The Colombian case is relevant because it is at the vanguard of protecting the
Liliana Lizarazo‐Rodríguez   +3 more
wiley   +1 more source

도시림 생태계 서비스에 대한 베이징 시민의 선호도 [PDF]

open access: yes, 2018
학위논문 (석사)-- 서울대학교 대학원 : 농업생명과학대학 산림과학부, 2018. 2. 윤여창.Rapid urbanization creates tremendous pressure on the natural environment. It also causes many ecological problems, especially in a city and its surrounding areas. Developing urban forest is considered
한지영
core  

Typical terrestrial ecosystem services of Miaodao Archipelago based on InVEST

open access: yes, 2020
生态系统服务评估是开展海岛保护与利用规划的重要依据。鉴于多数海岛远离大陆、面积小、物种数量少、生态系统脆弱的特点,水源供给、碳固定、土壤保持和生境维持等生态系统服务对海岛生态系统的可持续性具有重要意义。本文以庙岛群岛为研究区,利用InVEST模型对2017年庙岛群岛十个有居民海岛水源供给、碳固定、土壤保持和生境维持四类生态系统服务进行量化评估,研究其生态系统服务以及各服务之间权衡与协同关系的空间格局分布规律。主要研究结论如下: (1)2017年,庙岛群岛的水源供给量为0.722亿m3;总碳固定量约为4 ...
殷丽婷
core  

黄土残塬沟壑区不同林龄与坡向人工刺槐林 生态系统服务协同关系

open access: yes, 2020
]通过权衡关系的研究探索不同林龄与坡向人工刺槐林多项生态系统服务间的差异及动态 变化关系,为黄土残塬沟壑区人工刺槐林的经营管理提供理论依据。[方法]按照不同林龄阶段和坡向共 设置36个样地,对所选林分的涵养水源、土壤碳储量、土壤氮储量、年均生产力、生物多样性5个方面的生 态系统服务进行测算,利用均方根偏差(RMSD)对该区人工刺槐林生态系统服务的权衡与协同关系进行研 究,对生态系统服务与林分因子进行冗余分析。[结果]①不同林龄、坡向人工刺槐林的生态系统服务差异 显著(p<0.05);随林龄增加 ...
康永祥   +4 more
core  

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