Results 31 to 40 of about 41,050 (267)

Study on laser ablation characteristics of tree obstacles in transmission lines

open access: yesFrontiers in Physics
IntroductionAs a new and efficient method for obstacle removal, laser clearance has promising applications in eliminating tree obstacles in transmission lines.
Wenrong Xu   +6 more
doaj   +1 more source

Study on Insulator Flashover Voltage Gradient Correction Considering Soluble Pollution Constituents

open access: yesEnergies, 2016
Natural polluted insulator surfaces are always coated with various kinds of soluble constituents, and those constituents affect flashover performance differentially.
Dongdong Zhang   +5 more
doaj   +1 more source

A Wireless System for Monitoring Leakage Current in Electrical Substation Equipment

open access: yesIEEE Access, 2016
In this paper, the design and the development of a remote system for continuous monitoring of leakage currents and ground currents in high voltage electrical substations are proposed.
N. Harid   +4 more
doaj   +1 more source

Determination of Thermal Conductivity of Nano-ceramic Thermal Insulation Coating on the Surface of a Heat Pipe [PDF]

open access: yesE3S Web of Conferences
In the pursuit of conserving non-renewable fuel and energy resources and mitigating harmful emissions into the atmosphere, thermal insulation is commonly employed in practice for heated elements, including but not limited to building exteriors, boilers ...
Vafaeva Khristina Maksudovna   +8 more
doaj   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

Research on Lightweight Method of Insulator Target Detection Based on Improved SSD

open access: yesSensors
Aiming at the problems of a large volume, slow processing speed, and difficult deployment in the edge terminal, this paper proposes a lightweight insulator detection algorithm based on an improved SSD. Firstly, the original feature extraction network VGG-
Bing Zeng   +8 more
doaj   +1 more source

A Predictive Model for Dry-Growth Icing on Composite Insulators under Natural Conditions

open access: yesEnergies, 2018
Icing can adversely influence electric power system security. Two main issues are caused by icing: the overload of transmission lines, and the reduction in the insulation ability of the insulators.
Xingbo Han   +3 more
doaj   +1 more source

Equivalent analysis of contaminations under simulated fog-haze and natural fog-haze

open access: yes电力工程技术, 2022
The uncertainty of haze weather makes it difficult to carry out research on its impact on power equipment. However,whether the research under simulated haze environment is equivalent to that under actual haze weather is related to the guiding value of ...
WANG Jianhui   +5 more
doaj   +1 more source

Topological Anderson Insulator

open access: yesPhysical Review Letters, 2009
Disorder plays an important role in two dimensions, and is responsible for striking phenomena such as metal insulator transition and the integral and fractional quantum Hall effects. In this paper, we investigate the role of disorder in the context of the recently discovered topological insulator, which possesses a pair of helical edge states with ...
Chu, RL, Li, J, Shen, SQ, Jain, JK
openaire   +5 more sources

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

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