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变压器高压套管末屏在线监测系统设计

open access: yesDianci bileiqi, 2023
为了克服对套管进行固定周期停电检修的检修周期长、检修不精确等问题,探讨了高压套管的在线监测方案,给出了一种套管末端在线监测装置的设计方案,以保证及时发现套管设备绝缘缺陷,对保障电力系统安全运行具有重要意义。根据所设计的套管末端在线监测系统整体结构,介绍了监测系统中在线监测单元结构,以及在线监测单元结构中局部信号调理电路、高速采集电路以及电源功能电路的设计,最后通过测试实验,证明了在线监测系统可以实时监测高压套管运行状态,设计的在线监测装置具有稳定、准确、有效的特点。
谢佳   +5 more
doaj  

工业污水COD在线监测方法的选择与展望

open access: yesGongye shui chuli, 2005
对均使用重铬酸钾氧化,分别采用分光光度法和电位滴定法测定的SHZ-4型和JHC-ⅢA型COD在线监测技术进行了比较,指出了造成SHZ-4型COD在线监测仪测定误差大的原因,分析了工业污水在线监测存在的问题并提出了几点建议,对在线监测方法发展前景进行了展望,指出臭氧氧化法和高温催化法在线监测仪以及TOC在线监测仪属清洁监测技术,是未来实现污水中有机污染物含量在线监测的发展方向。
王俊荣
doaj   +2 more sources

Using Harvest Data to Assess Factors Influencing Regional Population Declines of Muskrats (Ondatra zibethicus) 利用捕获数据评估影响麝鼠 (Ondatra zibethicus) 区域种群数量下降的相关因素

open access: yesWildlife Letters, EarlyView.
Reported annual per‐capita harvest of muskrats (PCHM) decreased as wetland complexity (total number of wetland patches) decreased in 13 state and federal wetland areas in the Midwest, USA. Our results support the hypothesis that regional‐scale declines in the abundance of muskrats are likely associated with the losses to wetland habitats throughout the
Tim L. Hiller   +5 more
wiley   +1 more source

Scientists’ warning on the global destruction of rock outcrop ecosystems

open access: yesConservation 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
wiley   +1 more source

Evaluating a structured expert elicitation approach for adaptive conservation management based on lessons from five years in practice

open access: yesConservation Biology, EarlyView.
Abstract Adaptive management of threatened species relies on having ex ante estimates of species’ responses to different interventions. Structured expert elicitation is often used to generate these estimates, but comparisons of these expert‐predicted outcomes with observed results are rare.
Helen J. Mayfield   +18 more
wiley   +1 more source

Enhanced Dual‐Modality CT Imaging for Evaluating Hematogenous Metastasis During Photothermal Therapy

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
Dual‐modality computed tomography (CT) nanoprobes, BPP, are developed for real‐time microscopic monitoring of microvessel morphology and vascular permeability to provide predictive insights into cancer progression and metastasis. ABSTRACT Dynamic assessment of hematogenous metastasis is crucial for the tumor during photothermal therapy.
Yanhong Sun   +7 more
wiley   +1 more source

Full‐Spectrum Solar Light–Activated Chemiresistive Sensors Based on W18O49/Ag2S S‐Scheme Heterostructure for Highly Sensitive Room‐Temperature NO2 Detection

open access: yesRare Metals, Volume 45, Issue 7, July 2026.
ABSTRACT Light‐activated gas sensors hold significant potential in environmental monitoring and smart Internet of Things (IoT) owing to their advantage in room temperature operation. Nevertheless, due to a narrow light absorption range, high photocarrier recombination rate, and weak redox activity of the sensing material, the performance enhancement of
Jinyong Hu   +5 more
wiley   +1 more source

Seasonal Spatial Population Density Distribution Dynamics of Lynx and Ungulate Prey in Cold‐Temperate Coniferous Forests 寒温带针叶林猞猁和有蹄类猎物种群密度空间分布的季节性动态研究

open access: yesIntegrative Conservation, Volume 5, Issue 2, Page 225-235, June 2026.
This study used camera trap data from 6 years between 2016 and 2021 and generalized linear mixed models to explore the factors that influence the spatial density distribution of lynx and its prey populations in warm and cold seasons in Inner Mongolia Hanma National Nature Reserve, China.
Wentao Zhang   +11 more
wiley   +1 more source

Atomically Thin Sn:GaN‐GaN Homojunction for High‐Sensitivity β‐Ray Detection

open access: yesRare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT Gallium nitride (GaN), a third‐generation wide‐bandgap semiconductor renowned for its superior radiation tolerance, holds promise for advanced β‐ray detection. Herein, a scalable liquid metal‐assisted in situ synthesis method is presented to fabricate Sn‐doped GaN homojunctions via gallium oxide printing followed by ammonolysis, enabling ...
Weiqing Liu   +8 more
wiley   +1 more source

高压开关设备在线监测技术策略研究

open access: yesGaoya dianqi, 2015
自在线监测技术应用以来,虽取得了较大进步,但其应用具有较大的盲目性,且实际效果并不理想。文中通过调查研究的方法,充分搜集了目前各运行单位在线监测设备应用中的实际需求和存在问题,并广泛调研了国内外的开关制造厂商、在线监测设备制造厂商、高等院校、科研院等研究单位目前的研究现状。在此基础上,分析了高压开关设备在线监测的意义、在线监测设备应用存在的实际问题及其产生的原因,探讨了在线监测设备新的框架思路,提出了目前高压开关设备在线监测参量需求及在线监测技术的研究策略。
彭在兴
doaj  

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