Results 31 to 40 of about 22,057 (141)
Gaoya dianqi, 2016 高压开关是电力系统中起控制与保护作用的关键设备,液压操动机构是高压开关的驱动部件,直接影响到开关的动作性能。分析液压操动机构常用的阶梯型缓冲结构的工作原理,建立相应的数学模型,在此基础上对缓冲特性进行计算与分析。最后对缓冲特性进行优化,并通过可靠性试验验证优化前后的效果,从而为提高高压开关可靠性提供一种思路。
王亚辉 +4 more
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Biodiversity‐driven spatial conservation planning to delineate temporally stable regions
Conservation Biology, EarlyView.Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella +5 more
wiley +1 more source
Dianci bileiqi, 1995 带脱离装置ＭＯＡ的研究与开发（续）闫中华（苏州电瓷厂苏州２１５００７）（上接《电瓷避雷器》１９９５年第３期第９页）６热熔式脱离装置（动作）安秒特性试验方法的研究脱离装置（动作）安秒特性是脱离装置最重要的特性。以前，热熔式脱离装置使用得很少，ＩＥＣ、一...
闫中华
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Dianci bileiqi, 2021 受电容器充放电时间常数、电磁式机械翻牌动作时间的限制,以及放电电流的波形差异的影响,实际运行放电计数器存在不可靠动作的问题,尤其是难以记录多重雷击作用下的动作情况,给过电压分析、避雷器动作状态的评估带来困难。因此,笔者在分析传统放电计数器动作特性基础上,提出改进计数器动作特性的脉冲电流提取方法,设计了相应的脉冲电流测量线圈和信号提取电子电路,实测了信号测量线圈和电子电路的准确性。试验证明,该电流提取线圈能可靠还原冲击电流陡波、标准雷电波和操作波电流波形,误差小于0.2 ...
安志国 +6 more
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Scenarios and strategies for future‐proofing ecosystem management under climatic novelty
Conservation Biology, EarlyView.Abstract Climate change is driving unprecedented declines in dominant, habitat‐forming foundation species across marine and terrestrial ecosystems globally. As climatic novelty becomes the norm, ecosystem reassembly will become increasingly common. Predicting and understanding these transitions, and their implications for future ecosystem functioning ...
Lauren T. Toth +14 more
wiley +1 more source
Advancing conservation breeding programs for marine invertebrates
Conservation Biology, EarlyView.Abstract In the face of ecosystem change and biodiversity loss caused by climate change and other stressors, conservation breeding, or captive breeding, with the aim of reintroduction for wild population recovery, is an emerging tool for preventing species’ extinction and rehabilitating ecosystems.
Elora H. López‐Nandam +3 more
wiley +1 more source
Guangtongxin yanjiu, 1990 本文探讨数字光纤中继系统中的抖动积累问题,具体分析谐振槽路（RC）作定时提取时的抖动积累特性,并给出适于工程估算抖动积累特性的简化公式。
杨铸
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Conservation Biology, EarlyView.Abstract Procedural, distributional, recognitional, and epistemic justice aspects of conservation interventions are well documented in contexts where pastoralism is a key livelihood and way of life. Geospatial analyses and representations of wildlife conservation and restoration that are increasingly applied in pastoralist rangeland socioecological ...
Ryan R. Unks
wiley +1 more source
Gaoya dianqi, 2001 本文从真空断路器的动作特性出发 ,讨论了真空断路器各种机构的特点以及与真空断路器动作特性的匹配情况 ,提出了一种真空断路器用新型的永磁机构 ,并从原理上论述了该机构具有可靠性高、零部件少、免维护等优点 ,同时 ...
游一民, 郑军, 罗文科
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Emerging applications of large language models in ecology and conservation science
Conservation Biology, EarlyView.Abstract Large language models (LLMs) mark a major development in artificial intelligence, with potentially transformative implications for ecology and conservation science. Built on advanced deep‐learning architectures, these models can support a wide range of tasks. We reviewed emerging applications of LLMs, drawing on the wider scientific literature
Christos Mammides +5 more
wiley +1 more source