Results 21 to 30 of about 1,226,577 (254)
Wildlife Letters, EarlyView.Many nocturnal animals are difficult to study because they are rarely seen, including nocturnal primates, galagos and pottos, in West Africa. Working with over 600 people in 52 villages in southern Guinea‐Bissau, we found that communities frequently recognized galagos by their red eyeshine and distinctive calls, while pottos were not known.
Chloe Chesney +6 more
wiley +1 more source
Wildlife Letters, EarlyView.Using radiotelemetry, we found that the movement and home range of the endangered Sacalia bealei varied significantly across reproductive classes and seasons, with males exhibiting greater movement than females during wet and mating seasons. The species exhibits strong aquatic dependence, favoring deep pools interspaced among riffle‐pool sequences ...
Wing Sing Chan +3 more
wiley +1 more source
Gaoya dianqi, 2020 热塑性材料基于材料性能高、环保性好和成型工艺简单等优点,逐渐成为行业内积极研究用于取代环氧树脂的新型绝缘材料之一。目前国内外尚未针对应用于高压电器绝缘件制造的热塑性材料形成体系性的技术要求。文中选择了4种玻纤增强热塑性材料,从机械性能、电学性能和热学性能三方面与环氧树脂进行对比,同时研究玻纤在塑料注射成型中的取向和吸水性对材料性能的影响。结果表明,热塑性材料具有良好的机械、电学和热学性能,随着玻纤取向的增大,机械性能不断降低。为热塑性材料在高压电器设备中的应用提供技术基础。
谢雷钢, 张骁萌, 闵超
doaj
Shuitu Baochi Xuebao, 2021 为揭示荒漠草原区域围封对不同土壤生境物种多样性和功能多样性的影响，以荒漠草原不同土壤生境下围封（15年、10年、6年）和放牧（15年、6年、5年）的草地植物群落为研究对象，基于方差分析和主成分分析的基础上，通过函数拟合分析，探讨植物物种多样性与功能多样性之间的关系。结果表明：（1）围封相对于自由放牧条件，灰钙土生境植物功能多样性显著增加（P0.05）。（2）功能离散度表征的功能多样性与物种丰富度关系可用二次多项式Y=aX2+bX+c形式表示，随着封育年限的增加 ...
余轩 +6 more
doaj
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Decomposition is the transformation of dead organic matter into its inorganic constituents. In most biomes, decomposition rates can be accurately predicted with simple mathematical models, but these models have long under‐predicted decomposition in globally extensive ...
Heather L. Throop +8 more
wiley +1 more source
, 1989 我国目前太阳能干燥器的总采光面积约为7200米~2，其中整体式太阳能干燥器约占三分之一。本文概述了整体式太阳能干燥器的结构、工作原理及热工性能。通过实验研究，提出以温升保证率、脱水率、脱水比及热利用效率作为太阳能干燥器热工性能的评价指标，并提出了太阳能干燥器热利用效率的计算方法及公式。针对实验干燥器，综合了该装置脱水率计算经验公式 ...
仝兆丰, 李宗楠
core +1 more source
Organ‐specific ozone and nitrogen legacies strengthen substrate control over litter decomposition
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Elevated tropospheric ozone (O3) and nitrogen (N) deposition are concurrent atmospheric changes that strongly influence terrestrial carbon cycling, yet their combined effects on below‐ground decomposition remain poorly understood.
Xiaofan Hou +8 more
wiley +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Root activity creates unique microbial hotspots in the rhizosphere by influencing the metabolic activities of surrounding soil microorganisms, profoundly regulating the dynamics of soil organic carbon (SOC). However, how root economic strategies affect the formation and
Qiyu Tan +8 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2020 提出了一种新型波纹侧板-方钢管混凝土柱,利用波纹板良好的抗剪切屈曲变形能力来提高柱在水平荷载作用下的抗剪抗弯性能,进而提高柱的抗震性能。为研究新型柱的抗震性能,进行了2个试件的低周往复加载试验,分析试件的破坏特征,得到了新型柱的滞回曲线和骨架曲线,进而研究其承载力、延性、刚度退化和耗能能力。研究结果表明:试件的破坏主要集中在柱脚部分,试件的滞回曲线比较饱满,延性和耗能性能良好,刚度退化稳定;新型柱钢骨架受力形式合理,波纹侧板剪切弹塑性变形对试件的变形和耗能性能贡献显著。
高传超 +5 more
doaj
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Permafrost thaw is reshaping nutrient dynamics in boreal forests, but its impacts on tree nutrient limitation and functional strategies remain poorly understood. Clarifying these responses is crucial for predicting the response of boreal forests to climate change.
Qiyue Fu +9 more
wiley +1 more source