Results 161 to 170 of about 7,305,411 (311)

Improved DC Properties of Polypropylene HVDC Cable Insulation by Grafting and Blending Combined Modification

open access: yesHigh Voltage, EarlyView.
ABSTRACT In order to meet the needs of mechanical properties of cable insulation, polypropylene (PP) needs to be blended with low modulus materials to achieve toughening and softening. However, the compatibility between two or more resins can significantly affect the electrical properties of the composites.
Xindong Zhao   +9 more
wiley   +1 more source

Dielectric Breakdown Characteristics of Biaxially Oriented Polypropylene Films: Surface Structures on Thickness Dependence

open access: yesHigh Voltage, EarlyView.
ABSTRACT Film capacitors, essential for energy storage in power systems, benefit from reduced film thickness to increase capacitance and lower costs. While the inverse power law traditionally links higher electric strength with thinner films, its validity diminishes below a critical thickness.
Chuansheng Zhang   +5 more
wiley   +1 more source

Effect of Aggregation Structure on DC Electrical Performance of Thermo‐Oxidatively Aged Crosslinked Polyethylene Insulation

open access: yesHigh Voltage, EarlyView.
ABSTRACT Thermal ageing is an important factor leading to the deterioration of crosslinked polyethylene (XLPE) cable insulation. In this paper, XLPE insulating material was prepared in the laboratory and treated by thermal ageing at 130°C for durations of up to 40 days.
Bingrong Huang   +5 more
wiley   +1 more source

Performance Evolution and Ageing Characteristics of Crosslinked Polyethylene Insulation for HVDC Cables After Field Operation

open access: yesHigh Voltage, EarlyView.
ABSTRACT The ± 200 kV direct current (DC) cables of the Zhoushan Transmission Project were targeted, and crosslinked polyethylene (XLPE) insulation samples were prepared from faulty and spare cables. Samples were tested for oxidation induction period, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermally stimulated ...
Ying Liu, Jiazhu Yu, Meng Ma
wiley   +1 more source

Online real estate agencies and their impact on the housing market

open access: yesReal Estate Economics, EarlyView.
Abstract Online platforms have transformed many markets, as evidenced by the rise of firms such as Amazon, Uber, and Airbnb. However, the recent emergence of online real estate agencies has not yet received much attention. We investigate the impact of online agencies on the housing market.
Cigdem Gedikli   +3 more
wiley   +1 more source

STbayes: An R package for creating, fitting and understanding Bayesian models of social transmission

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract A critical consequence of joining social groups is the possibility of social transmission of information related to novel behaviours or resources. Network‐based diffusion analysis (NBDA) has emerged as a leading frequentist framework for inferring and quantifying social transmission, particularly in non‐human animal populations.
Michael Chimento, William Hoppitt
wiley   +1 more source

Reducing data processing effort in camera trap density estimation: Extending the REST model by explicitly modelling animal detection processes

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Accurate and reliable estimation of wildlife population density is fundamental to effective conservation and management. While camera traps show potential for monitoring ground‐dwelling mammal densities, labour‐intensive data processing remains a significant constraint. Ideally, conservation efforts would benefit from the continuous monitoring
Yoshihiro Nakashima   +2 more
wiley   +1 more source

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