Results 41 to 50 of about 13,812 (215)
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
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Gaoya dianqi, 2022 随着风力发电的供需日益增长，风力发电机越来越多地被安装在具有高土壤电阻率和高雷击发生率的次优地理位置，这使得风力发电机的防雷系统成为风电场设计的关键因素。有效的防雷系统不仅保证了风力发电机物理结构和运行控制人员的安全，还可保护风力发电机内部的电气控制系统，以实现风能的高效消纳。基于此，文中提出了一种适用于风电场的防雷系统有效性评估新方法，在风电场早期规划阶段采用所提评估方法，可减少雷击引起的WT停机时间，从而提高风机的发电量。考虑到接地系统在风电场防雷系统中起着至关重要的作用 ...
杨俊 +5 more
doaj
Wind Turbine Modeling and Control Study based on LPV Model [PDF]
, 2015 风能是一种清洁可再生能源，其开发和利用越来越受人们的重视。风力发电机是利用风能发电的设备，近年来，风力发电机逐渐向高效率、高可靠性和大型化发展，使风力发电机的动态模型变得更加复杂。为了使风力发电机平稳可靠运行，提高发电效益，对风力发电机进行建模和控制很有必要。本文针对风力发电机的动态非线性特性，基于LPV模型辨识方法对风力发电机建模，后用辨识所得LPV模型设计MPC控制器，对风力发电机进行变桨距控制。论文的主要工作有： （1）讨论风力发电机的原理模型，分别分析各分块原理模型和一些常用的计算机仿真工具。 （
曹力仁
core
How Many Floods Have Occurred in China in the Past Decade? A Perspective From Social Media
Earth's Future, Volume 13, Issue 4, April 2025.Abstract Global climate change has led to frequent and widespread flood disasters in China. Traditional flood disaster investigations mainly focus on major flood events, and small‐scale flood events are often overlooked. This study utilized the Sina Weibo social media platform to detect flood events in 370 cities in China from 2012 to 2023.
D. Shen +5 more
wiley +1 more source
全球能源互联网, 2019 海上风能资源丰富且开发潜力巨大，海上风电开发对于应对全球气候变化问题具有重大意义。重点介绍了欧洲国家海上风电的发展现状和海上风电及输送关键技术。给出了欧洲主要的海上风电场装机容量和相关政策，并指出随着开发区域不断向深海拓展，有效降低成本至关重要。在海上风电及送出关键技术方面，介绍了大功率风力发电机、海底电缆、机组基础结构技术，以及海上风电直流汇集系统和不控整流送出方案。最后给出建议，对于海上风电场规划及并网方式选择，需要在考虑并网导则和具体技术基础上确定最终方案。
李翔宇 +4 more
doaj +1 more source
Design and Implementation of Wind Turbine Background Monitoring and Management Platform [PDF]
, 2016 随着经济的不断发展，人类对传统的化石资源的开发速度越来越快，地球上的化石资源也越来越匮乏。要想保证能源的可持续利用，保证人们的资源消费需求。节约使用石化能源、开发利用新能源和可再生能源十分关键。而风力发电作为能源当中重要的电力行业，已成为全世界各个国家大力发展的重要新能源之一。 在中国，全国平均风功率密度为100W/m2，风能资源的总储量约为32.26亿kw，现行可供开发的资源共计约10亿kw，其中包含了2.53亿kw陆地风能和7.5亿kw近海风能。风的可利用区域分布广阔，装机数量多 ...
熊菲
core
Environmental disasters and ecomodernist beliefs: Insights from a quasi‐natural experiment
Policy Studies Journal, Volume 53, Issue 1, Page 201-231, February 2025.Abstract This article contributes to knowledge of how environmental disasters affect ecomodernist beliefs, i.e. the view that technology can solve environmental problems. Such beliefs in the general public are key to build mass support for environmental policies relying on large‐scale scientific solutions, but their stability is poorly understood.
Aksel Sundström
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Exploration for effects of acoustic stimulus on movement behavior and HSP70 expression of two kinds of marine crustaceans [PDF]
, 2016 水下噪声会潜在的引起海洋生物紧张，分散和掩蔽这些海洋生物重要的声信号，进而对海洋生物的行为和生存造成影响。近几十年来，随着人类社会的不断发展，人们将发展目光投向了占有全球71%面积的海洋。伴随海洋事业的快速发展，海洋工程噪声对海洋生物的影响引起了人们的极大关注。虽然目前已有不少研究成果评估了水下工程噪声对海洋生物的影响，这些噪声包括轮船、打桩、地震勘探以及风电场等水下噪声，表明海洋工程等人为噪声对鱼类以及海洋哺乳动物都将造成了不同程度的影响和伤害。但是 ...
周韦峥嵘
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TRPC1/TRPC3 channels mediate lysophosphatidylcholine-induced apoptosis in cultured human coronary artery smooth muscles cells [PDF]
, 2016 溶血卵磷脂（lysophosphatidylcholine，lysoPC）是氧化低密度脂蛋白（oxidizedlow-densitylipoprotein，ox-LDL）的主要成分。早期的研究表明，lysoPC可诱导人冠状动脉平滑肌细胞（humancoronaryarterysmoothmusclecells，HCASMCs)凋亡，但具体机制尚不清楚。近期，我们通过细胞活力测定，流式细胞术，共聚焦显微镜及分子生物学手段对lysoPC作用的分子机制进行研究发现，lysoPC可引发细胞外钙离子内流 ...
王渊
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The Modern Language Journal, Volume 108, Issue 3, Page 741-770, Autumn (Fall) 2024.Abstract The study investigated the effect of task complexity (TC) on second language (L2) learners’ affective responses and writing performance and how these were modulated by cognitive and affective individual difference (ID) factors. A total of 412 Chinese 8th‐grade English‐as‐a‐foreign‐language learners completed a working memory (WM) test, a scale
Chengchen Li, Li Wei, Xiaojun Lu
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