Results 91 to 100 of about 37,303 (155)
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
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Jianzhu Gangjiegou Jinzhan, 2016 某十层的纯框架结构建筑检测结果表明,其弹性层间变形和弹塑性层间变形均不满足现行规范要求。采用防屈曲支撑对该结构进行了抗震加固设计,并基于SATWE软件分析了其小震下的结构性能。利用SAP2000软件,基于Pushover分析方法进行了抗震性能分析。由分析结果得知,防屈曲支撑增加了结构的抗侧刚度,增强了结构延性,改善了原结构薄弱层的抗震承载力。经防屈曲支撑加固后的结构,其变形特性仍与原框架结构类似。对实际工程所采用的防屈曲支撑进行了抗震性能抽检试验,结果表明,构件力学性能与设计数据吻合良好 ...
史先进
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Functional Ecology, Volume 40, Issue 7, Page 2332-2344, July 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract The stoichiometric ratios of carbon (C), nitrogen (N) and phosphorus (P) serve as important indicators for assessing nutrient balance in forest ecosystems, but their relationships with photosynthetic dynamics require deeper characterization.
Minghao Chen +9 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
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Gaoya dianqi, 2013 笔者在分析传统高压开关设备与智能化高压开关设备各自不同特征的基础上,结合国家电网智能高压开关试验指导意见及GB 1984—2003关于高压开关机械性能试验要求,分析了智能化高压开关机械特性测试用传感器选型、安装位置、安装方法等对特性测试结果的影响。分析结果表明,为准确测量高压开关机械性能参数,传感器应安装于断路器能够准确反应触头运动特性位置。为了便于智能高压断路器在进行机械性能的型式试验考核,应考虑数字式位移传感器的接口协议如何与测试系统相匹配。
贾一凡 +6 more
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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
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Methods in Ecology and Evolution, Volume 17, Issue 7, Page 2123-2134, July 2026.Abstract Elliptic Fourier analysis (EFA) is often employed in geometric morphometrics (GM), but the normalization of elliptic Fourier descriptor (EFD) has persistently posed challenges for obtaining unique and comparable results, especially in the application of outline‐based GM methods, which limits the implementation in automated analysis of numerous,
Hui Wu +6 more
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Zhongshan Daxue xuebao. Yixue kexue ban, 2008 【目的】 探讨感染性心内膜炎(IE) 住院死亡的主要影响因素? 【方法】 对207例1997年1月至2006年12月住院治疗的IE患者的可能导致住院死亡的影响因素进行回顾性分析?对可能与IE住院死亡的相关因素分别行二项分类logistic 回归分析,在单因素分析的基础上,对单因素Logistic回归分析中有意义的因素进行多因素逐步向前(Wald)Logistic回归分析?
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Gaoya dianqi, 2019 RTV防污闪涂料是电力系统中广泛采用的防污措施,能够有效提高电力系统外绝缘耐污性能。但作为一种高分子材料,RTV涂料的耐候性并不理想,在长期运行中可能出现起皮、脱落、粉化等现象进而影响耐污性能。文中以同一厂家、不同运行环境下的RTV防污闪涂料样品作为研究对象,分析了涂料的性能指标及微观结构变化情况。分析发现,RTV防污闪涂料在运行后会出现有机基团含量下降、二氧化硅成分增加等现象,且高温高湿环境中样品的老化更为严重。研究表明,老化后的RTV防污闪涂料热稳定性下降,有机组分减少 ...
贾伯岩 +5 more
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New Phytologist, Volume 251, Issue 1, Page 207-227, July 2026.Network of VAMP714‐dependent interactions during salt stress. Summary Plant responses to salt stress include an altered root architecture mediated by ion imbalances, reactive oxygen species (ROS) accumulation, and altered hormonal responses. Auxin is implicated in these processes.
Jialei Sun +3 more
wiley +1 more source