Results 1 to 10 of about 9,957,509 (229)

Linking Groundwater to Surface Discharge Ecosystems: Archaeal, Bacterial, and Eukaryotic Community Diversity and Structure in Quebec (Canada) [PDF]

open access: yesMicroorganisms, 2023
Aquifer systems are composed of water flowing from surface recharge areas, to the subsurface and back to the surface in discharge regions. Groundwater habitats harbor a large microbial biomass and diversity, potentially contributing to surface aquatic ...
Benjamin Groult   +2 more
doaj   +2 more sources

The secondary ionization wave and characteristic map of surface discharge plasma in a wide time scale [PDF]

open access: yesNew Journal of Physics, 2020
The surface discharge is the elementary process in a broad range of low temperature plasma applications. Variation of voltage profiles with different time scales leads to the redistribution of deposited energy as well as electro-hydrodynamic forces of ...
Yifei Zhu, Yun Wu
doaj   +2 more sources

HSP-UNet: An Accuracy and Efficient Segmentation Method for Carbon Traces of Surface Discharge in the Oil-Immersed Transformer [PDF]

open access: yesSensors
Restricted by a metal-enclosed structure, the internal defects of large transformers are difficult to visually detect. In this paper, a micro-robot is used to visually inspect the interior of a transformer.
Hongxin Ji   +4 more
doaj   +2 more sources

Surface Discharge Mechanism on Epoxy Resin in Electronegative Gases and Its Application

open access: yesApplied Sciences, 2020
This study presents the surface discharge characteristics of insulating gases, including sulfur hexafluoride (SF6), dry air, and N2, under a non-uniform field.
Herie Park, Dong-Young Lim, Sungwoo Bae
doaj   +2 more sources

Entire process of surface discharge of GIS disc-spacers under constant AC voltage

open access: yesHigh Voltage, 2020
Surface contamination on the disc-spacers is one of the main threats to the safe operation of gas insulated switchgear (GIS) insulation. The authors’ research has confirmed the phenomena of intermittent discharge of such defects under AC constant voltage
Chenhao Zhao   +6 more
doaj   +2 more sources

Surface discharge characteristics and initiation mechanism of PEEK in nitrogen under semi-square voltage

open access: yesAIP Advances, 2018
The surface discharge behaviors of polyetheretherketone (PEEK) in nitrogen under both positive and negative semi-square voltage were investigated using the current pulse detection method by non-inductive resistor and optical signal detection method by ...
Pengyu Fu   +5 more
doaj   +2 more sources

Quantitatively Computing the Influence of Vegetation Changes on Surface Discharge in the Middle-Upper Reaches of the Huaihe River, China

open access: yesForests, 2022
Changes in meteorology, hydrology, and vegetation will have significant impacts on the ecological environment of a basin, and the middle-upper reach of Huaihe River (MUHR) is one of the key regions for vegetation restoration in China.
Yuxin Wang   +4 more
semanticscholar   +1 more source

Numerical Modelling of Positive Surface Discharges in C-C4F8/CF3I/N2 Gas Mixture under Non-Uniform Field

open access: yesEnergies, 2021
As an environmentally friendly gas with good insulation and stable chemical properties, CF3I gas mixture is considered as a potential alternative to SF6 gas to compensate for the shortcomings of SF6 gas as a greenhouse gas. This article attempts to study
Binhai Fan   +4 more
doaj   +1 more source

Impact of DBDS and Silver Sulfide on the Performance of Thermally Aged Mineral oil Impregnated Pressboard Material

open access: yesIEEE Access, 2022
The corrosive sulfur compounds present in the mineral oil causes the formation of dibenzyl disulfide (DBDS) complex and it can also erode the on-load tap changing selector contacts leading to generation of silver sulfide (AgS2).The present work reports ...
S. K. Amizhtan   +3 more
doaj   +1 more source

Stm of Glow-Discharge Treated Surfaces [PDF]

open access: yesBiomaterials, Artificial Cells and Immobilization Biotechnology, 1993
As a model surface, graphite slides were treated by pure nitrogen gas plasma for different periods (15 sec-5 min). These samples were kept in air or under argon atmosphere in sealed holders. STM images were obtained at constant current mode. Results showed that both the number and the size of clusters formed by plasma deposition increased with exposure
Oral, A.   +3 more
openaire   +4 more sources

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