Results 31 to 40 of about 10,361 (165)
ABSTRACT Developing efficient catalytic thermal desorption systems is of great significance in the field of sustainable soil remediation. Herein, novel Mn–Ce solid solution modified Co3O4 nanocrystals were successfully prepared for the removal of perfluorooctanoic acid (PFOA) in soil.
Yu‐Hao Liu +8 more
wiley +1 more source
河南省鸟类新纪录种——灰翅鸫(Turdus boulboul)
在整理2015—2018年的红外相机数据中,在河南内乡宝天曼国家级自然保护区2个调查位点拍摄到了4组独立照片,经鉴定为灰翅鸫(Turdus boulboul),雌鸟和雄鸟各有2次记录,并确认为河南省的鸟类新纪录物种。
姚松 1 +6 more
doaj
2019—2020年在云南西双版纳构建了野生亚洲象(Elephas maximus)监测预警体系,大量布设红外相机采集亚洲象活动数据,通过移动网络传输至数据管理平台,采用人工智能技术识别亚洲象影像,统计分析后借助移动网络将预警信息自动发布到当地村寨预警广播和手机APP、微信及短信,达到自动预警的目标。2021年1—6月,在景洪市、勐海县和勐腊县布设的579台红外相机通过移动网络自动传输数据 294 381条到数据管理平台,数据管理平台的人工智能识别系统共挑选出野生亚洲象照片及视频4 666条 ...
王曼 +9 more
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ABSTRACT This study presents one of the first comparative analyses of digital nationalism on social media. Using a computational mixed‐method approach—combining supervised, computer‐assisted content analysis with network modelling—it analyses 64,541 tweets from Twitter and 91,063 posts from Weibo surrounding a shared geopolitical flashpoint: President ...
Chris Chao Su, Jun Liu
wiley +1 more source
Importance of connectivity for carnivore richness and occupancy in fragmented biodiversity hotspots
Abstract Structural connectivity affects wildlife movement between habitat patches, contributing to the persistence of wildlife populations and their resilience to human‐induced and environmental changes. However, its importance to wildlife population persistence remains unclear, particularly in fragmented landscapes, where there are additional co ...
Cindy M. Hurtado +12 more
wiley +1 more source
基于无人机红外测试的500kV架空线路在运复合绝缘子温度场特征分析
为提升现场复合绝缘子红外测试判定准确率,对现场新投运的123支500 kV复合绝缘子开展基于无人机的红外测试,并提取复合绝缘子温度曲线,统计温差、温度梯度特征,对正常复合绝缘子自身不同部位温度差异的原因进行了讨论,并给出了抑制温度曲线高频干扰的方法。结果表明,现场正常复合绝缘子有相当比例温差超过2 K。正常复合绝缘子温度曲线存在高频变化分量,其来源于伞裙与芯棒之间的温差、红外图像清晰度不足产生的局部温度振荡。通过小波分解与低频分量重构,可有效抑制上述高频分量产生的温差,从而减小现场红外测试结果误判概率。
李特 +6 more
doaj
风力对1100 kV GIS出线套管局放缺陷时温度特征的影响分析
对于500 kV及以下的GIS出线套管,利用红外测温的手段诊断内部局放缺陷已有比较丰富的经验和案例,而用于特高压变电站的1 100 kV GIS出线套管体型高大,内部屏蔽结构相对复杂,缺乏相关缺陷诊断经验,且其表面温度会不可避免的受到外界风力影响。对于某些特殊环境和地区,若等待风速满足红外测温要求则可能延误诊断时机,造成缺陷的进一步发展,因此有必要研究风力对1 100 k V GIS套管局放缺陷时温度特征的影响。文中建立1 100 kV GIS套管的三维温度场仿真模型 ...
张丕沛 +4 more
doaj
Community‐informed and codesigned research to understand the impacts of railways on wildlife
Abstract Trains cause mortalities of several animal species, but the ecological impacts of railways are understudied. Most research on wildlife–train collisions has focused on large mammals, but understanding railway‐specific risks for underrepresented taxa, especially vulnerable species, is important for developing effective mitigation strategies ...
Kyle D. Vincent +5 more
wiley +1 more source
中华穿山甲(Manis pentadactyla)夜行穴居,体表覆盖鳞片,个体外观特征差异较小,基于红外相机影像拍摄到的体貌特征进行个体识别较难,因此探讨一种基于红外相机影像与比例尺估测体长进行中华穿山甲个体识别的方法。在笼舍内布设不同高度的红外相机并拍摄中华穿山甲影像,利用ImageJ软件计算中华穿山甲在红外相机影像中的体长测量值,并计算在不同高度条件下红外相机拍摄的中华穿山甲体长误差值。结果表明:红外相机最佳的布设高度为0.8 m,相对误差为2.76%。基于上述结果 ...
张奕航 +6 more
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