Results 31 to 40 of about 389,714 (160)

Gadolinium‐Induced Activation of CoNiO2 for Efficient Oxygen Evolution: A Structural and Electronic Modulation Approach

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Multicomponent transition metal oxides (TMOs) incorporating rare‐earth (RE) elements have emerged as promising materials for the oxygen evolution reaction (OER). However, knowledge of how to regulate the structure of TMO‐based nanomaterials through RE incorporation to enhance catalytic performance remains limited.
Bolin Zhao   +6 more
wiley   +1 more source

Elevation, soil pH and calcium availability shape regional and local scale spatial patterns of PhoD gene abundance in tropical and subtropical forests

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 983-1000, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organic phosphorus mineralization is a critical process in the phosphorus cycle, governing phosphorus bioavailability for plants. The PhoD gene, which encodes the key enzyme alkaline phosphatase, serves as a valuable biomarker for this process.
Sandhya Mishra   +3 more
wiley   +1 more source

基于RS和GIS的甘肃省沙漠化现状及潜在沙漠化程度评价

open access: yesShuitu Baochi Xuebao, 2003
通过对1986,2000年两期TM图像的解译,获得甘肃省14年间土地利用与土地沙漠化变化情况.通过GIS,建立了甘肃省土地沙漠化与土地沙漠化潜在程度数据库.利用沙漠化发展指数与主成分分析法,进行了甘肃省土地沙漠化发展与潜在沙漠化程度空间格局分析.研究表明,甘肃省沙漠化发展规模呈现河西走廊大于东部其他地区.但是,东部总体沙漠化发展程度要强于河西走廊地区.由于受沙漠化致灾因素的影响,潜在沙漠化程度的空间格局基本与沙漠化发展规模空间格局一致.
马安青   +3 more
doaj  

Elephant barrier behaviors in response to conflict mitigation fences

open access: yesConservation Biology, Volume 40, Issue 2, April 2026.
Abstract Human–wildlife conflict is a major conservation issue, particularly in lower income countries, where it affects marginalized people and leads to the extirpation of threatened species. Managers increasingly use fences to reduce this conflict but lack evidence on the effectiveness of these barriers, especially on whether this reduces the number ...
Dominique Gonçalves   +2 more
wiley   +1 more source

临日都市区空间格局与空间组织研究 [PDF]

open access: yes, 2019
区别于传统规划范畴内单一都市区空间格局的思考,当前以空间一体化视角下多核心发展的设计思路得到了广泛的探讨。文章基于山东临沂、日照两市为核心的临日都市区发展现状和空间问题的分析,从空间格局和空间组织的角度对都市区范围内不同层级的空间单元提出发展趋势,根据空间一体化提出的"核心互动"和"节点新生"的发展模式,并在此基础上提出核心和节点的架构体系,打造以临日都市区内双核心为发展载体、多节点共同发展的空间优化策略。研究有助于加深人们对城市空间认知 ...
王金岩, 牛胜男, 祖武
core  

Life Stage‐Specific Genetic Diversity and Landscape Characteristics Collectively Influence Genetic Recovery in Pometia pinnata Population 生活史阶段特异的遗传多样性与景观特征对番龙眼种群遗传恢复的协同影响

open access: yesIntegrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.
Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee   +5 more
wiley   +1 more source

Excellent Comprehensive Electromechanical Properties in PZT‐Based Hard High‐Temperature Piezoceramics

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT High‐power piezoelectric ceramics which have a wide operating temperature range are essential for sensor and actuator applications in extreme conditions. However, their development is fundamentally hindered by the inherent trade‐off among key parameters (TC, d33, Qm).
Rui Yan   +10 more
wiley   +1 more source

Integrating Urban Expansion and Flood Risk: A Spatial Assessment of Impervious Surface Growth and Floodplain Exposure in Mecklenburg County (2011–2021)

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
wiley   +1 more source

半连续函数空间

open access: yes四川大学学报. 自然科学版, 1997
应用连续格理论来研究半连续函数空间,主要结果是:(1)拓扑空间X到单位区间[0,1]的下(上)半连续函数空间L(X)(U(X))的Wijsman收敛是拓扑的,当且仅当X局部紧.这时,诱导拓扑作为连续格与L(X)上的Lawson拓扑一致;(2)具有Wijsman拓扑(对偶Lawson拓扑)的X到[0,1]的上半连续函数空间U(X),是具有Kuratowski收敛的拓扑(对偶Lawson拓扑)的闭集构成的超空间2X×[0,1 ...
张德学
doaj  

Importance and spatial patterns of invisible fisheries in Amazonian clear‐water rivers as revealed by fisher knowledge and collaboration

open access: yesConservation Biology, Volume 40, Issue 1, February 2026.
The graphical abstract highlights the research collaboration with fishers through interviews to record fishers' knowledge and participatory monitoring, to provide data on small‐scale fisheries in three clear water rivers (Trombetas, Tapajos and Tocantins).
Renato A. M. Silvano   +10 more
wiley   +1 more source

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