Results 11 to 20 of about 143,612 (165)
, 2023 根据物理学中的“刚体定轴转动定律”，可知对于旋转式风机，尤其是水平轴风机，降低叶片等的机械转动惯量，潜在的优点：降低主轴的磨损，有利于提高风机的寿命；有利于降低“切入风速”；有利于提高从风速到风机出力折算的准确性。低风速风机叶片变短、变宽，不仅是降低其机械转动惯量的首选措施，还有利于增大叶片的刚度。其次是降低叶片的重量（物理学的“质量”）。低风速情况下，多台小风机比单台大风机 ...
Zheng-Ling YANG
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, 2021 从刚体定轴转动定律可知，提高低风速风力发电机发电能力的方法为提高叶片吸收风能的效率，降低叶片、发电机转子等的机械转动惯量等。低风速风机叶片几何形状优化设计的建议为：降低叶片长度、增大叶片宽度，对鱼类、鸟类进行仿生 ...
Zheng-Ling YANG
core +1 more source
, 2022 风力机的尾迹动力学受大气湍流及上游风机尾迹的影响。在这项工作中,我们使用大涡模拟和致动面模型方法研究了四种不同风机间距和三种不同来流的双风力机阵列尾迹特性。将尾迹来流下的风力机尾迹湍流统计量与相同大气来流条件下的单一风力机的尾迹湍流统计量进行比较。结果表明,尾迹来流显著影响下游风力机的近尾迹结构,通过增加湍动能和增强湍流输运效应来加速尾迹恢复。然而对于所考虑的风力机间距而言,远尾迹中的速度亏损和湍动能特性彼此非常相似,并且与单一风力机尾迹十分相近。对于处于尾迹来流的下游风力机尾迹蜿蜒来说 ...
杨晓雷, 刘晓豪
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Wildlife Letters, EarlyView.We examined changes in perceived risks associated with chronic wasting disease (CWD) and perceived trust in wildlife agencies over time across 10 studies in eight states. Results indicated that perceived risks to both deer and humans declined the longer the disease had been in a state. Results also indicated that agency trust evaluations were positive,
Jerry J. Vaske, Craig A. Miller
wiley +1 more source
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
Conservation Biology, EarlyView.Abstract The design of experiments to investigate the combined effects of multiple stressors requires exposing target organisms to multiple combinations of stressor doses. Concurrent manipulation of stressors is often infeasible with wildlife, but long‐lasting health effects allow individual health to be used as an integrator of prior stressor exposure.
Enrico Pirotta +24 more
wiley +1 more source
Drivers of bat researchers’ intent to adopt field hygiene practices
Conservation Biology, EarlyView.Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman +6 more
wiley +1 more source
, 2023 对于旋转式风力发电机，特别是水平轴风力发电机，在低风速情况下，叶片变短、变宽，减小风轮等的机械转动惯量，可以提高风机轴的寿命，相对增大对风能的捕获，提高风电功率预测的准确性，降低噪音，降低成本等。这是从刚体定轴转动定律、鸟类等仿生得到的推断 ...
Zheng-Ling YANG
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Regulatory compliance and support for altered management of the exotic pet trade
Conservation Biology, EarlyView.Abstract Globally, the exotic pet trade has contributed to species invasion, disease, and animal welfare risks. Although scientists have advocated for increased trade regulation, the success of management and regulatory efforts depends on compliance by participants in the exotic pet trade. We used a regulatory compliance framework to investigate exotic
Elizabeth N. Pratt +3 more
wiley +1 more source
Risks of concealing environmental degradation
Conservation Biology, EarlyView.Abstract Current practice seeks to conceal the visual impact of land‐use change (i.e., development). Six percent of development impact assessments in Australia and 14% of the World Bank's assessments recommend visual impact mitigation. This mitigation results in, for example, vegetated buffer strips alongside cleared agricultural areas and earthen ...
Matt W. Hayward +8 more
wiley +1 more source