Results 21 to 30 of about 12,711 (119)
Implications of Tobacco Use on Pathogen‐Driven Diseases: A Public Health and Policy Perspective
World Medical &Health Policy, Volume 17, Issue 3, Page 468-474, September 2025.ABSTRACT The tobacco epidemic remains one of the most significant global public health challenges, responsible for over 8 million deaths annually, with a substantial portion occurring among non‐smokers exposed to second‐hand smoke. While cigarette smoking remains the most prevalent form of tobacco use worldwide, the rise of electronic nicotine delivery
Nadine Kabbani, James L. Olds
wiley +1 more source
Gaoya dianqi, 2008 为了更好地应用小电阻接地方式来提高配电网系统的安全性、可靠性,笔者研究了中性点采用小电阻接地和消弧线圈接地的配电网在发生单相接地故障时的不同特点以及保护方式的差异。首先采用对称分量法对这两种配电网的单相接地故障进行分析,并采用MATLAB进行了仿真。研究结果表明,采用这两种接地方式的配电网在发生单相接地故障时的不同特点导致其继电保护措施也各不相同。因此,随着中性点经小电阻接地的接地方式的推广,其相应的单相接地故障继电保护措施需进一步完善。
李林, 冯勇, 郑剑飞
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Gaoya dianqi, 2022 海上风电场海缆登陆方式常常受到海岸线保护的限制，其电缆接地方式设计无法完全按照GB/T51190—2016《海底电力电缆输电工程设计规范》，导致系统运行风险等级无法量化。基于此，文中建立电缆接地仿真模型，研究了不同工况下电缆金属套感应电压及接地电流的稳态特性，并对当前电缆接地方式进行安全性评估。研究结果论证了当前接地方式的可行性，强调了登陆点处海缆、水缆金属套电气连接的重要性。
高登飞 +4 more
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People and Nature, Volume 7, Issue 7, Page 1749-1768, July 2025.Abstract Social‐ecological systems (SES) are coupled systems formed by the intricate interactions between humans and nature. Our movement towards sustainable lifestyles requires a robust understanding of these interactions. Achieving a sustainable win‐win situation for both social and ecological systems, therefore, necessitates a sound scientific ...
Na Sa +6 more
wiley +1 more source
Community Engagement and Ecosystem Services for Mine Rehabilitation 社区参与与生态系统服务在矿区修复规划中的应用
Integrative Conservation, Volume 4, Issue 1, Page 107-112, March 2025.Our study presents a community engagement process informing post‐mining land use in the Philippines through an ecosystem services lens. We conducted a participatory workshop at the Padcal Mine site to assess local perspectives on ecosystem services and mining impacts.
Yuan Pan +4 more
wiley +1 more source
Uncovering Xi Jinping's Policy Agenda: Text As Data Approach
The Developing Economies, Volume 63, Issue 1, Page 9-46, March 2025.How many agendas has Xi Jinping put forth and promoted since taking office in 2012, and what are the types of agendas? How much of political attention has each agenda received, and how has the allocation of attention changed over time? We utilize a dataset of presidential statements, speeches, and reports from 2012 to 2022 and employed automated text ...
Jaehwan Lim, Asei Ito, Hongyong Zhang
wiley +1 more source
Gaoya dianqi, 1997 介绍了城市电网中性点经电阻接地方式的应用前景,分析了确定中性点电阻应考虑的问题及选择原则,提出了电阻的几种接线方式,并对这种电阻接地方式存在的问题进行了探讨。
张慧媛, 丁杨
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Dianci bileiqi, 2023 随着海上风电场规模的增加，35 kV集电系统的海缆截面和长度也不断增加，由于海上风电35 kV集电系统与陆上35 kV配电网中性点接地方式不同，但其海缆绝缘厚度与陆缆标准一致，导致其绝缘水平有较大裕度，造成一定资源的浪费。以某海上风场35 kV集电系统为例，搭建了3条集电线路仿真模型，计算了35 kV海缆在合闸/切除集电线路、合闸/切除箱式变压器等操作工况下和弧光接地下的过电压水平，比较海上风电集电系统中性点在不同接地方式下，不同工况下35 kV海缆在所承受的过电压水平的差异，结果标明：合闸 ...
黄涛 +6 more
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Dianci bileiqi, 2019 为了解决配电网中性点接地方式具有的人身安全、接地选线及供电可靠性问题,开发了基于故障相智能接地处理方式的配电网多功能安全接地处理装置,该装置采用了铁磁谐振动态预警判断技术、分区式故障相选相技术、故障性质的智能判断与处理技术和自适应接地选线技术解决了配电网铁磁谐振动态预警、判断与处理,解决了过渡电阻接地时的精准选相,解决了故障性质的智能判断与处理,能使瞬时性故障快速恢复,使永久性故障选线精确率提高到百分百,能处理0-2 000 A的故障电流。装置经在电网的试验及运行效果证明 ...
李政洋 +4 more
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