Results 51 to 60 of about 173,183 (227)
He jishu熔盐堆是第四代核反应堆的候选堆型之一，对其关键运行参数进行精准预测，不仅可以揭示反应堆的运行状态，而且能够对异常工况提前预警，为操纵员提供决策支持和技术指导。为此，本文基于深度学习算法对熔盐堆关键参数开展预测研究，以期优化熔盐堆的运行状态监测效率并辅助决策过程。采用RELAP5-TMSR程序建立生成数据集的熔盐堆系统安全分析模型，基于自编码器（Autoencoder，AE）、长短时记忆网络（Long Short-Term Memory，LSTM）和门控循环单元（Gated Recurrent Unit ...
王 超群 +4 more
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Jellyfish blooms restructure plankton dynamics and trophic linkages in coastal waters
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Jellyfish blooms are increasing globally in frequency and intensity, introducing complex ecological interactions, yet the mechanisms by which they alter ecosystem structure remain poorly characterized due to a lack of sustained field observations.
Pengpeng Wang +4 more
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When and why to give shorebirds a head start
Conservation Biology, EarlyView.Abstract Headstarting is a translocation technique involving the hatching or rearing of wild eggs or young in captivity and the release of those individuals back to the wild at or before independence. It has been trialed as a conservation intervention for shorebirds over recent decades to improve the population trend of target populations by increasing
Lynda Donaldson +4 more
wiley +1 more source
全球能源互联网, 2018 电转气技术（power to gas，P2G）是实现中国可再生能源大规模消纳的潜在方案，其核心电解技术按照工作温度可划分为低温与高温电解两类，其中高温电解电池具有转换效率高、转换产物丰富以及支持可逆运行等优势，是未来能源与电力系统中极具吸引力的规模化储能技术。文章主要从电池结构、转换模式、系统接入等方面介绍高温电解技术的特点及其在电力储能中的潜在应用。电池结构方面，新兴的扁管式结构兼具了板式与管式的结构优点；转换模式方面，高温电解池可单独制取H2或CO，也可共电解直接合成CH4；系统接入方面 ...
邢学韬 +7 more
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Effects of parachute science on local research capacity 降落伞科学对当地研究能力的影响
Conservation Biology, EarlyView.Abstract Strengthening research capacity is essential to address the global biodiversity crisis. Yet, parachute science often undermines this goal, and its prevalence, costs, and benefits are unclear. We analyzed 13,502 publications on primate research that we extracted from Scopus (1960–2022) to evaluate the effects of parachute science on local ...
Li Yang +11 more
wiley +1 more source
He jishu针对钍基熔盐堆白光中子源（Thorium Molten Salt Reactor with a Particle and Neutron Source，TMSR-PNS）在运行过程中出现中子束流掉束或打火导致的束流不稳定的问题，有必要设计研发一种具有高计数率、低中子束流影响、高中子/伽马甄别性能的中子束流监测器。基于蒙特卡罗模拟软件Geant4，系统研究了薄膜塑料闪烁中子束流监测器的中子转换层厚度、闪烁体厚度，以及入射窗材料等关键参数对薄膜闪烁体的影响规律，分析结果表明：闪烁体中子转换层厚度约为2 ...
陈 怡 +5 more
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Conservation Biology, EarlyView.Abstract Prioritization in conservation is crucial for the development of efficient and effective decision‐making policies. For many decades, the importance of some species and their habitats has been assessed and applied in conservation legislation, but bats and their diurnal roosts have ofbeen overlooked.
David López‐Bosch +6 more
wiley +1 more source
A link between increased temperature and avian body condition in a logged tropical forest
Conservation Biology, EarlyView.Abstract The combined effects of anthropogenic disturbances, such as logging and climate change, remain poorly understood; yet, they are the main threats to tropical biodiversity. Most tropical African countries lack long‐term climate data, so climate impacts on biodiversity cannot be assessed.
Moreen Uwimbabazi +7 more
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The collective application of shorebird tracking data to conservation
Conservation Biology, EarlyView.Abstract Addressing urgent conservation issues, such as the drastic declines of North American migratory birds, requires creative, evidence‐based, efficient, and collaborative approaches. The abundance of over 50% of monitored North American shorebird populations has declined by over 50% since 1980. To address these declines, we developed a partnership
Autumn‐Lynn Harrison +71 more
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Kongjian kexue xuebao空间站舱外载荷平台支持部署众多不同类型的载荷, 为开展大规模空间科学研究提供了机会. 但随着舱外载荷数量及相应任务量的不断增加, 且在受限于资源约束的情况下, 需要制定科学合理的任务规划, 以提高舱外载荷的工作效率. 针对舱外多载荷运行任务规划方法, 深入分析了国际空间站舱外载荷任务规划现状, 重点分析了其舱外载荷平台、载荷类型及特点和多载荷运行任务规划方法, 分析当前任务规划策略、方法及未来发展方向.
单 亚东 +3 more
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