Results 21 to 30 of about 12,962 (120)
Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
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Gaoya dianqi, 2019 接地开关的静电场仿真计算可以指导产品的结构优化,从而缩短产品研发周期降低产品研发费用。为了得到接地开关表面电场,以承德特高压串补用串1 100 kV B类接地开关为样本,计算接地开关分闸状态下表面电场分布。首先依据设计尺寸利用SolidWorks软件对接地开关进行实体建模;然后依据三维有限元数值计算法对接地开关典型时刻下的电场电位进行了三维有限元仿真计算,得出其电位及表面电场分布;仿真结果显示高场强出现在辅助回路均压环、静触头均压环及动触头表面;接着对接地开关高场强区域进行了优化设计 ...
张志文 +4 more
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Behavioral interventions to reduce demand for threatened freshwater turtles as pets
Conservation Biology, EarlyView.Abstract Growing demand for freshwater turtles as pets has fueled illegal trade and accelerated wild population declines, underscoring the need for theory‐based demand‐reduction interventions. We conducted a three‐part randomized controlled trial with active turtle keepers (n = 1800) in China to test conservation‐ and legality‐framed messages by ...
Wuji Zheng +9 more
wiley +1 more source
Gaoya dianqi, 1967 一、概述 CS15——D手力操动机构为组合式操动机构,用以操作户外10——110仟伏隔离开关(包括双柱式及三柱式)。根据隔离开关的接地情况,可以装成单一手柄、双手柄或三手柄,以操作不接地、单接地、双接地隔离开关 ...
陈齐武
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study examines multilingual practices in research interviews, focusing on English lexical insertions in Chinese‐language research interviews with teachers of Chinese in Australian secondary schools, and treating these code‐switches as analytically meaningful rather than incidental.
Chengwen Yuan, Tianwei Zhang, Gary Bonar
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Gaoya dianqi, 1988 按照国标和IEC标准的要求,接地开关的动、热稳定电流应与隔离开关一致。为此,要求对原有接地开关的结构加以改进。本文提出三种简易的方法,可以作为新型接地开关设计的参考。
洪梅芳
doaj
Gaoya dianqi, 2022 针对高压开关组合电器设备智能监测手段不足、传感器接口和监测装置接口不统一、数据就地分析能力不强及设备缺陷难以及时发现等问题，文中从一二次深入融合的角度，完成了252 k V组合电器智能感知系统及就地边缘智能分析单元的设计，统一了传感器与开关本体的机械接口、传感器与监测装置的电气接口，开关就地边缘计算终端将采集的各状态数据进行多参量融合分析，实现了开关设备状态的就地分析及缺陷诊断及故障预警。开关通过试验验证，文中设计的252 kV智能组合电器感知系统数据测量准确率为100%，故障诊断分析准确率为98 ...
陈富国 +5 more
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Journal of Animal Ecology, Volume 95, Issue 7, Page 1178-1193, July 2026.This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng +5 more
wiley +1 more source
Gaoya dianqi, 2012 概括了接地开关开合感应电流的运行工况及同塔双回线路电磁感应与静电感应的产生机理。介绍了葛洲坝电站B类接地开关的选型情况,对AREVA B类接地开关的工作原理及安装调整重点注意事项做了说明。针对安装运行情况,提出了应优化结构设计使B类接地开关在隔离开关的两侧均能安装以及增加SF6气体压力显示装置等建议。
董显 +4 more
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A more‐than‐human political ecology of Indonesian songbird trade
Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Since its inception, conservation science has considered wildlife trade a problem. In focusing on conservation outcomes, conservationists almost completely ignore the welfare of traded animals and plants and the harms they endure. We developed a political ecology approach that incorporates the interconnectedness of people with animals and ...
Sicily Fiennes +9 more
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