Results 41 to 50 of about 1,057 (129)
Conservation Biology, Volume 39, Issue 2, April 2025.Abstract Emerging infectious diseases are increasingly recognized as a significant threat to global biodiversity conservation. Elucidating the relationship between pathogens and the host microbiome could lead to novel approaches for mitigating disease impacts.
Alexander S. Romer +25 more
wiley +1 more source
Dianci bileiqi, 2017 动车组高压套管作为连接车载变压器和车顶高压电缆的主要绝缘设备,其可靠性直接影响动车组的运行可靠性。基于ANSYS有限元软件分析了高压套管的电场分布特性,通过分析高压套管的电位和电场分布情况,掌握工作状态下高压套管的工作特性。结果表明,高压套管内置的金属屏蔽网可以改善接地法兰附近的电场分布,但内置的金属屏蔽网边缘附件的电场强度分布较大,一旦出现网压过高时,金属屏蔽网上下边缘处可能是最先发生局部放电,甚至绝缘击穿,因此可以通过合理选择高压套管的耐压等级或合理优化套管结构降低高压套管的故障率 ...
张士宇, 马昭钰, 周博, 郭英强
doaj
Design and characteristic analysis of fiber optic Fabry-Perot sensor for static ice strain monitoring [PDF]
, 2019 Sea ice is one of the important natural disasters.A new method based on optical fiber Fabry-Perot sensor for ice strain measurement was proposed to meet the needs of ice strain monitoring.A high sensitivity optical fiber Fabry-Perot pressure sensor with ...
Guanjun WANG +5 more
core +1 more source
Risk, Hazards &Crisis in Public Policy, Volume 16, Issue 1, March 2025.Abstract Federal Emergency Management Agency (FEMA) disaster funeral assistance is available to cover funeral expenses for the relatives of disaster victims in the United States. However, funds are dependent on death certificate proof of a disaster‐related cause of death. Previous research has shown that the medicolegal death investigation (MDI) system
Danielle Zaychik
wiley +1 more source
Gaoya dianqi, 2018 随着中国对能源的需求日益增加,特高压直流输电工程与长输管道工程的修建正大规模地进行。当直流接地极单极运行时,会有部分电流流入埋地金属管道,使金属管道发生电化学腐蚀,加速管道的破损。该文旨在系统地介绍特高压直流接地极入地电流对金属管道腐蚀的研究,包括管道在直流入地电流作用下加速腐蚀的机理及影响因素分析,入地杂散电流的检测评估方法及实际工程中典型的管道防腐措施介绍。对比由于电气化铁轨入地电流引起的管道腐蚀所采取的解决方案,对特高压直流接地极引起的管道腐蚀进行分析,最后给出相关研究方向的展望 ...
廖敏夫 +5 more
doaj
Jianzhu Gangjiegou Jinzhan, 2012 新型金属管混凝土长柱构件稳定性是必须要考虑的一个重要问题。根据高强钢的初始缺陷小于普通钢材,给出了高强钢管混凝土的稳定系数计算公式及常用高强钢管混凝土柱的稳定系数表。由于不锈钢应力-应变曲线没有明显的屈服点和屈服平台,及其弹性模量略小于普通钢材,给出了不锈钢管混凝土柱的稳定系数计算公式及常用的稳定系数表。根据铝合金结构设计规范中铝合金结构稳定系数的计算公式,考虑"统一性"原理,给出了铝合金管混凝土柱的稳定系数计算公式及常用的稳定系数表。并通过有限元模拟结果验证了3种金属管混凝土稳定系数计算公式的正确性。
宫永丽, 查晓雄
doaj
Induced electromotive force waveform measurement in metal plate and metal pipe [PDF]
, 2018 本研究では，金属管の中空および金属板における誘導起電力を測定している．金属管の中空および金属板の表面を磁石が通過する．試料と通過する磁石の位置，およびその位置と誘導起電力の関係を調べる．既存のミシンを分解・改造した自作器で測定を行っている．種々の試料を用いて実験・測定を行い，良好な結果を得ている． In this study, induced electromotive force in the metal wall of a hollow metal pipe is measured.
2077 +4 more
core
, 2017 本文在总结了前人LED的基础上,利用单片机智能控制的方法研究智能LED的设计和制备,利用色度学三基色配色原理,通过更改三基色LED的电流大小实现整体LED系统的调光和调色,系统可实现亮度20%-100%的调节,实现全彩调节,满足人们的多样化照明需求;同时可通过手机APP利用红外技术实现LED的无线遥控 ...
曹文越
core +1 more source
People and Nature, Volume 6, Issue 4, Page 1655-1667, August 2024.Abstract Ecosystem restoration practices are gaining prominence in coping with the crisis of ecosystem degradation. To improve the long‐term effectiveness of restoration activities, community engagement in restoration projects needs to be strengthened.
Huxuan Dai +6 more
wiley +1 more source