Results 21 to 30 of about 1,161,463 (166)
Functional Ecology, Volume 40, Issue 7, Page 2068-2082, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Grasslands worldwide are experiencing severe degradation due to overgrazing, climate change and anthropogenic disturbances, resulting in substantial declines in biodiversity and ecosystem functioning.
Xiaoqi Wang +5 more
wiley +1 more source
Gaoya dianqi, 2003 季节因素将影响接地系统的安全性能。季节系数随冰冻季节形成的地表高阻层的电阻率及其厚度的增加而增加。在我国北方高寒冰冻地区接地系统的接地电阻季节系数可达3.0,接触电压和跨步电压季节系数可能达到10和5.4。在雨季形成的地表低胆层也有可能导致接触电压的升高。采用垂直接地极能减小接地系统的季节系数,起稳定接地系统安全性能的作用。
何金良 +4 more
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Dianci bileiqi, 2023 针对科研生产厂区独立接地系统难以长期有效降阻的问题，基于有限元理论建立了建筑独立接地系统的雷击暂态接地模型，基于该模型探究了有限面积下建筑独立接地装置的防雷降阻优化方法。研究结果显示，对于有限面积下安装的独立接地系统，采用接地网加装接地模块以及双地网加装垂直接地极的方式均有良好的降阻效果。在考虑造价经济性的前提下，使用双地网配合垂直接地极、且垂直接地极间距为10 m～20 m时有更好的降阻效果。研究结果对有限面积下建筑物独立接地系统的设计与优化具有一定的参考意义。
古维富 +4 more
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Functional Ecology, Volume 40, Issue 7, Page 2128-2142, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Soil organic nitrogen (SON) transformation is critical for global nutrient cycling and ecosystem productivity, yet how its responsiveness to climate change differs across diverse land use types remains poorly resolved.
Xinyi Yang +10 more
wiley +1 more source
Journal of Animal Ecology, Volume 95, Issue 7, Page 1178-1193, July 2026.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
Gaoya dianqi, 2017 为获得适合城市微电网的接地方案,文中基于城市微电网接地案例在PSCAD/EMTDC中搭建3种不同接地方式（TN、TT及IT）的仿真模型,研究了各接地系统故障电流水平,仿真验证了过流保护及剩余电流动作保护的灵敏性;基于仿真模型,分析了总等电位联接下TN接地系统的安全性,并提出非等电位联接下TT及IT接地系统要配置快速可靠的剩余电流动作保护装置。综合各接地系统优缺点,获得适用于城市微电网案例的混合接地系统。
张合栋 +4 more
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The underappreciated roles of fog and dew on vegetation and biocrusts
New Phytologist, Volume 251, Issue 1, Page 46-63, July 2026.Summary Fog and dew represent minor components of ecosystem water budgets in most ecosystems. However, fog and dew can play an essential role in ecosystem dynamics and are particularly important for water‐limited systems. In addition to serving as direct water inputs, fog and dew can influence microclimate and water redistribution, thereby promoting ...
Lixin Wang, Yue Li, Mengyun Sun, Na Qiao
wiley +1 more source
Gaoya dianqi, 2007 在分析现有各种小电流接地系统单相接地故障选线方法的基础上,对小电流接地系统单相接地故障的系统零序电压和线路零序电流的相轨迹特性进行了深入分析,提出了使用相轨迹方法来选线的原理。该方法计算简单方便,结果直观易懂,选线结果不受CT极性影响。该原理适用于中性点不接地系统和非有效接地系统,并在该系统发生间歇性接地故障时仍可保证正确选线,比其它方法容易实现。通过MATLAB环境不同条件下各种接地故障的仿真研究,验证了上述方法的正确性。
李功新
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Home‐Based Versus In‐Hospital Care in Pediatrics: A Systematic Review of Cost‐Effectiveness Studies
World Medical &Health Policy, Volume 18, Issue 2, June 2026.ABSTRACT Home‐based care has emerged as a potential alternative to traditional hospital‐based care for children and adolescents worldwide. This systematic review aimed to systematically gather and critically assess the available evidence on the cost‐effectiveness of home‐based versus in‐hospital care for pediatric populations globally.
Luís Carlos Lopes‐Júnior +8 more
wiley +1 more source
A more‐than‐human political ecology of Indonesian songbird trade
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Since its inception, conservation science has considered wildlife trade a problem. In focusing on conservation outcomes, conservationists almost completely ignore the welfare of traded animals and plants and the harms they endure. We developed a political ecology approach that incorporates the interconnectedness of people with animals and ...
Sicily Fiennes +9 more
wiley +1 more source