Results 21 to 30 of about 321,608 (299)

Study of the B-Dot Sensor for Aircraft Surface Current Measurement

open access: yesSensors, 2022
The B-dot sensor is a type of Rogowski coil widely used in the measurement of current. However, the accuracy of the B-dot for measuring aircraft high-frequency lightning current is greatly affected by factors such as numerical integration drift, high ...
Chen Tong   +6 more
doaj   +1 more source

Real Talk: Designing Practice-Based Teacher Education for Family Communication

open access: yesEducation Sciences
Communication between families and schools is foundational for students’ academic success, community support for schools, and teachers’ experience. Yet, few preservice teacher education programs teach novices how to engage in equitable and effective ...
Lightning Peter Jay, Naorah Rimkunas
doaj   +1 more source

Insights into ground strike point properties in Europe through the EUCLID lightning location system [PDF]

open access: yesNatural Hazards and Earth System Sciences
Evaluating the risk of lightning strikes to a particular structure typically involves adhering to the guidance outlined in IEC 62305-2. Among the multitude of factors influencing the overall risk, flash density emerges as a crucial parameter.
D. R. Poelman, H. Kohlmann, W. Schulz
doaj   +1 more source

Enhancing the Output Performance of a Triboelectric Nanogenerator Based on Modified Polyimide and Sandwich-Structured Nanocomposite Film

open access: yesNanomaterials, 2023
Recently, scientists have been facing major obstacles in terms of improving the performances of dielectric materials for triboelectric nanogenerators. The triboelectric nanogenerator (TENG) is one of the first green energy technologies that can convert ...
Jiaheng Zhou   +10 more
doaj   +1 more source

Simulation of Positive Cloud-to-ground Lightning Channel Morphological Characteristics Using a Stochastic Leader Model

open access: yes应用气象学报
In recent years, with the advancement of lightning observation technologies, particularly the progress of high-speed photography and optical observation techniques, it has become possible to capture 2-dimensional morphological characteristics of ...
Mei Ji   +5 more
doaj   +1 more source

Gigantic jet discharges evolve stepwise through the middle atmosphere

open access: yesNature Communications, 2019
Gigantic jets, lightning discharges originating from tropical thunderstorms that can reach the base of the ionosphere at 90 km altitude, have not been captured using high-speed video cameras before.
Oscar A. van der Velde   +3 more
doaj   +1 more source

Application of Markov Model to Estimate Individual Condition Parameters for Transformers

open access: yesEnergies, 2018
This paper presents a study to estimate individual condition parameters of the transformer population based on Markov Model (MM). The condition parameters under study were hydrogen (H2), methane (CH4), acetylene (C2H2), ethylene (C2H4), ethane (C2H6 ...
Amran Mohd Selva   +6 more
doaj   +1 more source

Observation of the Whole Discharge Process During a Multi-stroke Triggered Lightning by Continuous Interferometer

open access: yes应用气象学报, 2020
The discharge process is often discussed in the lightning physics. VHF (very high frequency) observations play an important role in studying lightning discharge processes, because they show where air breakdown occurs.
Zhang Yang   +6 more
doaj   +1 more source

Determining distance to lightning strokes from a single station [PDF]

open access: yes, 1973
Electronic system can rapidly determine location of lightning strikes occurring within 30 km range. Longer distances are also determined, but with reduced accuracy.
Ruhnke, L. H.
core   +2 more sources

A fractal model for the lightning induced current on a transmission line [PDF]

open access: yes, 1997
This article presents a model of a tortuous lightning channel, and a study of the consequent electromagnetic coupling to a transmission line. We analyse the fractal dimension of the induced current on the line, compared with the fractal dimension of the ...
Canavero, Flavio   +2 more
core   +1 more source

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