Results 131 to 140 of about 21,882 (195)
Mitigating light pollution impacts on arthropods based on light‐emitting diode properties
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract Light pollution from artificial light at night (ALAN) is a significant environmental problem with far‐reaching consequences for ecological systems. Recent innovations in light‐emitting diode (LED) technology may offer sustainable outdoor lighting solutions, but scientific evidence is lacking. We investigated the effects of various LED lighting
Nicola van Koppenhagen +3 more
wiley +1 more source
Gaoya dianqi, 1985 一个由电阻和电容并联组成的补偿网络插入到冲击电阻分压器低压臂电阻和测量电缆输入端之间。如果这个补偿网络的参数选择得适当,就可以相当显著地减少测量系统的响应时间和部分响应时间。这种带补偿网络的测量系统的记录叠加高频振荡的能力也提高了。本文在一个1.2MV电阻分压器测量系统上进行了实验,给出了结果,还进行了相应的理论计算。
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Evolution of research on global amphibian declines
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract In the late 1980s, the scientific community became aware of severe, enigmatic amphibian population declines. These declines triggered a wave of research focused on quantifying their extent and identifying key drivers. We used text‐analysis techniques, including topic modeling and geoparsing, to examine the evolution of research focused on ...
Jordann Crawford‐Ash +6 more
wiley +1 more source
Parameter estimation error based robust adaptive law design and experiments [PDF]
, 2016 Gao, Guan Bin +3 more
core +1 more source
Conservation Biology, Volume 40, Issue 1, February 2026.Abstract In the era of the sixth mass extinction, reversing global biodiversity loss is of vital importance for life on Earth. In 2022, parties to the Convention on Biological Diversity (CBD) adopted the Kunming‐Montreal Global Biodiversity Framework (GBF), a strategic plan with 23 action‐oriented targets to be achieved by 2030.
Ina Lehmann +3 more
wiley +1 more source
Dianci bileiqi, 2014 由于使用条件的限制,规程法计算公式不能准确反映雷击杆塔塔顶时输电线路上的感应过电压。基于场抵消法理论,先计算雷击塔顶的单位方波响应,然后通过Duhamel积分求解任意雷电流波形下导线上的感应过电压。根据目前得出的主放电速度、上行先导与雷电流幅值的函数关系,利用MATLAB编写了雷击塔顶时输电线感应过电压的计算程序,获得了感应过电压的数值和随时间变化的波形,并总结了感应过电压幅值、时变特性及其影响因素和影响规律。
张迅 +5 more
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Veterinary Dermatology, Volume 37, Issue 1, Page 140-147, February 2026.Background: Normal hydration of the canine epidermis is imperative for cutaneous homeostasis. Xerosis may be encountered in canine atopic dermatitis and may be aggravated by topical antiseptics. Hypothesis and Objectives: To evaluate the hydrating properties and the safety of a spray (Sensiderm spray; MP Labo) when applied after shampooing healthy dogs
Adamantia Pseftogka +3 more
wiley +1 more source
Gaoya dianqi, 2016 为研究变压器油和绝缘纸老化对扩展Debye模型参数的影响,以及确定变压器油换油时间,首先在实验室条件下对油纸绝缘试样进行130℃加速老化试验和PDC试验,然后建立不同试样相对应的扩展Debye模型,深入研究变压器油和绝缘纸老化时扩展Debye模型支路参数的变化规律,最后提出用中间时间常数分支电容变化率作为变压器的换油阈值。结果表明:变压器油主要影响扩展Debye模型时间常数小于500 s的支路参数,随着变压器油老化天数增加,油老化产物会增加油中偶极子组的转向极化及油纸界面极化,去极化电流起始部分幅值增大,
宋臻杰, 杨飞豹, 吴广宁, 高波
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Shuitu Baochi Xuebao, 2003 空间尺度的大小对水土流失研究影响很大,尺度效应是地理分异规律和地理综合规律在时间和空间上的表现。随着尺度变大,研究对象内的综合性、概括性增强,研究对象之间的主导分异因子级别提高;随着尺度变小,研究对象内的分异性、多样性增强,研究对象之间的主导分异因子级别降低。在尺度变化的同时,水土流失规律、主要影响因子、评价方法等同时发生变化。水土流失研究的尺度效应,对水土流失与泥沙资料扩展应用,以及提高流域/区域等较大尺度水土流失量的评价与预测精度等尺度转换问题研究有重要意义。
王飞 李锐 杨勤科 张晓萍
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Gaoya dianqi, 1981 对于高压断路器标准中应如何正确规定热稳定电流时间作了阐述,论证了新标准中选取2秒热稳定时同的有关根据与理由,探讨了热稳定时间长短对断路器技术经济性能的影响。
崔成恕
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