Results 21 to 30 of about 395 (125)
Research on Lightning Electromagnetic Coupling Suppression and Polarization State Stability of OPGW Cable based on Anti Resonant-Hollow Core Fiber [PDF]
【Objective】In the integration scenario of power and optical communication networks, the lightning electromagnetic interference faced by Optical Fiber Composite Overhead Ground Wire (OPGW) has become a key technical bottleneck restricting the system ...
BAI Yunlong +11 more
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Developmental Medicine &Child Neurology, Volume 61, Issue 3, Page E1-E35, March 2019., 2019 目的 本国际临床指南由欧洲残疾儿童学会（the European Academy of Childhood Disability，EACD）牵头制定，旨在解决发育性协调障碍（developmental coordination disorder，DCD）的定义、诊断、评估、干预以及与社会心理方面的临床应用关键问题。 方法 本指南针对五个领域的关键问题，通过文献综述和专家团队的正式讨论达成共识。为保证指南的循证基础，以“机制”、“评估”和“干预”为检索词, 对2012年更新以来提出的最新建议以及新增的“社会心理问题”和“青少年/成人”为检索词进行检索。根据牛津大学循证医学中心证据等级 (证据水平 [level of evidence, LOE]1–4) 将结果进行分类，最终转化为指南建议。并由国际 ...
Jing Hua +6 more
wiley +1 more source
World Water Policy, Volume 12, Issue 1, February 2026.ABSTRACT Urban expansion significantly impacts flood risk, particularly in rapidly growing areas where impervious surfaces exacerbate surface runoff. This study examines spatial patterns of urban growth and their effects on flood exposure in Mecklenburg County, North Carolina, from 2011 to 2021.
Pegah Madadi, Azad Sadeghi
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Dianci bileiqi, 2020 输电线路覆冰严重影响电力系统安全运行,由于架空地线的悬挂点高于相导线,所处的环境温度低,同时没有运行电流等原因,在相同覆冰段下比其它导线覆冰更为严重。目前,大电流融冰技术是防治导、地线覆冰的最为有效的措施之一,由于架空地线的特殊结构,在开展大电流融冰之前,需对其进行绝缘化改造,但地线在绝缘化改造后的感应电压不仅影响到输电线路的安全运行和防雷效果,也是融冰电压和并联间隙选取的关键因素。笔者以500 kV同塔双回架空输电线路为例,在ATP-EMTP中建立了仿真模型 ...
邓元实 +5 more
doaj
Ecology and Evolution, Volume 15, Issue 10, October 2025.This paper proposes a ‘relaxed’ point‐count survey method to enhance accessibility and expand geographic coverage by easing these constraints. Surveys can be conducted in diverse locations, including urban areas and travel routes, within flexible timeframes (e.g., 6 h after sunrise or during the evening) and with adaptable spacing between survey points,
Masumi Hisano
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The Empty State: Governing the Voids in a Projected Conflict‐Torn Yemen
Politics &Policy, Volume 53, Issue 5, October 2025.ABSTRACT This study introduces the concept of the “Empty State” to explain a form of state dysfunction in Yemen, where state institutions exist but are stripped of their governance authority. While frameworks on fragile or failed states emphasize the weakness or collapse of state capacity, the Empty State highlights the persistence of symbolic ...
Moosa Elayah
wiley +1 more source
Research of New MFL Testing Technology Based on the Condition of Variable Excitation [PDF]
, 2016 储罐和管道是石化工业中石油和天然气的主要载体，储罐和管道的腐蚀不可避免的造成石油和燃气的泄漏，并进而引发爆炸等事故。因此，对储罐和管道的安全检测，对于保障人民生命、财产以及防止环境污染等具有重要的意义。漏磁检测技术属于无损检测范畴，是储罐和管道检测中最常用的检测手段之一。内、外表面缺陷的区分问题一直是漏磁检测技术的一个技术难题，本文提出了变励磁条件下的新型漏磁检测技术，可有效检测缺陷并实现内外表面缺陷的区分。 本文首先分析了漏磁检测技术以及无损检测技术的研究背景和现状 ...
李雪松
core
Conservation Biology, Volume 39, Issue 4, August 2025.Abstract Marine protected and conserved areas (MPCAs) are promoted as an ecosystem‐based adaptation (EbA) approach to increase community and ecosystem resilience to climate change. However, traditional approaches to MPCA design typically do not consider climate risk or habitat condition under a climate threat.
Alyssa L. Giffin +6 more
wiley +1 more source
Long‐Distance Corridors Facilitate Asian Elephant Adaptation to Climate Change 长距离廊道有助于亚洲象适应气候变化
Integrative Conservation, Volume 4, Issue 1, Page 57-70, March 2025.Climate change presents significant challenges for Asian elephants, forcing them to either remain in degraded habitats or seek new ones. But, remaining would lead to resource shortages, while moving is hindered by movement barriers. This study integrates species distribution models (MaxEnt) and the minimum cumulative resistance (MCR) model to construct
Xue Lu +7 more
wiley +1 more source
, 2014 文章介绍了近年来的部分新技术在OPGW（光纤复合架空地线）中的应用,包括光纤传感技术在OPGW的温度、应力在线监测方面的应用,OPGW融冰新技术,200μm外径新型光纤在OPGW中的应用,大余长光纤OPGW在OPGW中的应用 ...
方跃生, 曾凡兴
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