Results 31 to 40 of about 489,288 (151)
Informing spatial conservation prioritization with species’ traits
Conservation Biology, Volume 40, Issue 2, April 2026.Abstract New Guinea, the most botanically diverse island on the planet, is the location for one of the boldest conservation initiatives. The Manokwari Declaration aims to achieve 70% conservation designation for the Bird's Head Peninsula. This is 40% higher than the 2022 Global Biodiversity Framework target.
Liam A. Trethowan +27 more
wiley +1 more source
, 2021 树皮是木本植物茎干最外层结构,具有保护茎干、养分储存与运输等重要作用。因此,树皮厚度是一项非常重要的功能性状,其变异不仅影响树皮的各种生态功能,还能影响群落构建与物种共存。然而,以往对树皮厚度的研究集中于火灾易发生态系统,对火灾不易发生的亚热带常绿阔叶林的研究仍较缺乏。测量了古田山国家级自然保护区亚热带常绿阔叶林内树种的树皮厚度,并检验了总树皮厚度、内树皮厚度与外树皮厚度在各分类群间以及功能群间的差异。结果发现:1) 39个树种807个个体的总树皮厚度、内树皮厚度与外树皮厚度均值分别为1.90 mm、1.
陈声文 +7 more
core
Integrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry +5 more
wiley +1 more source
, 2019 发展地热发电是减少燃煤消耗和污染物排放的重要方向,有机朗肯循环(ORC)是利用中低温地热能发电主要技术之一。地热井深度决定了地热流体温度,进而影响ORC的热力性能,此外钻井成本、生产/回注泵耗功和系统投资亦受地热井深度的影响。本文针对徐家围子三个典型地热井深度(2700m、3200m和4000m),以系统净输出功最大为目标函数优化了异戊烷的蒸发温度,分析了地热井深度对ORC热经济性的影响。结果表明:随着生产井深度的增加,生产/回注泵耗功占比降低,单位功率所需换热面积降低,发电成本降低 ...
刘强, 孙杰, 段远源
core +4 more sources
, 2011 LED结温的升高将造成发光强度降低、发光主波长偏移、寿命降低等不利影响，开发高效、紧凑、低成本、高可靠性的散热技术是LED的重点研究内容之一。总结了目前大功率LED不同类型散热技术的原理及其研究现状，包括自然对流、风冷、液冷、热管和热电制冷等，分析了各种散热技术的优缺点。并介绍了目前LED常用的几种热界面材料 ...
李文博 +3 more
core +3 more sources
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Fluxgate sensors with Co‐rich amorphous microwires, widely used for their low noise in magnetic field measurements, encounter significant challenges in high‐temperature environments such as well drilling and geological exploration. Prolonged thermal aging degrades the performance of Co‐rich amorphous microwires, resulting in increased noise ...
Lining Pan +10 more
wiley +1 more source
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Considering the multiple challenges faced by stealth coatings in complex service environments, the development of multifunctional integrated microwave absorbing materials (MAMs) that combine efficient electromagnetic (EM) attenuation with environmental tolerance has become an urgent need. In this work, coral‐like CoNi@Void@C microparticle (MP)
Jiale Wu +8 more
wiley +1 more source
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Spatial segregation in at‐sea distribution is frequently observed in seabirds and can have important implications for conservation and management. Globally, many albatross and petrel populations are declining due to bycatch in fisheries. In South Georgia, the decrease in wandering albatrosses (Diomedea exulans) differs among breeding sites ...
V. Warwick‐Evans +3 more
wiley +1 more source
, 2013 哈图矿集区位于准噶尔盆地西北边缘，金矿成矿地质条件良好。在对区域成矿规律及成矿条件的认识基础上，对岩石地球化学数据处理分析，优选与金矿相关的元素，采用分形技术确定化探异常下限；利用ETM+遥感影像，采用主成分分析等方法，提取了羟基异常和铁染异常。对比发现：遥感蚀变异常定位精度高，异常范围小，与矿体吻合关系较好，应用于化探异常查证可提高成矿有利度的判别；该方法适合与热液活动有关的金属矿 ...
周曙光 +6 more
core
Gaoya dianqi, 2022 复合绝缘子运行中异常发热现象频发，其中老化与表面污秽是导致发热的主要原因。文中采用有限元多物理场仿真，结合实测获得的材料参数，分别建立了正常运行、湿热老化、局部涂污及整体涂污等4种典型工况下的复合绝缘子仿真模型，根据湿热老化以及表面污秽的不同发热特征，分别建立静电、电流场两种模型。通过电场计算分析发现：湿热老化后复合绝缘子沿面电场增大、界面电场降低；局部涂污复合绝缘子在涂污处电场稍微下降；整体涂污复合绝缘子由于沿面电流增大造成电场畸变严重。通过以电介质损耗为接口的耦合热场以及电流场 ...
刘宇 +5 more
doaj