Results 91 to 100 of about 17,868,026 (137)

Early-warning of rock burst in coal mine by low-frequency electromagnetic radiation

Engineering Geology, 2020
Rock burst is one of the major geological hazards in coal mines and is difficult to prevent. Faced with this problem, the low-frequency electromagnetic radiation (EMR) test experiments of coal and rock were conducted to explore the characteristics of low-
Enyuan Wang, Zhentang Liu, Liming Qiu
exaly   +2 more sources

A Series DC Arc Fault Detection Method Based on Steady Pattern of High-Frequency Electromagnetic Radiation

IEEE Transactions on Plasma Science, 2019
Due to detection difficulties, dc arc faults are one of the most dangerous risks in dc power systems. Most traditional studies are based on arc current, which may change during normal operation and cause unwanted trips.
Shuangle Zhao, Yao Wang, F. Niu, Chen Zhu, You-Cai Xu, Kui Li   +5 more
semanticscholar   +1 more source

Mode transition and energy dependence of FitzHugh-Nagumo neural model driven by high-low frequency electromagnetic radiation

AEU - International Journal of Electronics and Communications, 2020
The FitzHugh-Nagumo (FHN) neural model is widely used to study the dynamic characteristics of signal propagation, synchronization, stochastic resonance(SR), coherent resonance(CR), and bifurcation of neurons. Based on Helmholtz theorem and the FHN neuron
Guo-Wei Wang, Ying Xu, Mengyan Ge, Lulu Lu, Ya Jia   +4 more
semanticscholar   +1 more source

Effects of non-ionizing radio frequency electromagnetic radiation on the development and behavior of early embryos of Danio rerio

Electromagnetic Biology and Medicine
Biological effects of radio frequency electromagnetic radiation (RF-EMR) in the range of 900–1800 MHz emerging from the mobile phone were investigated and were found to influence the locomotor pattern when exposure was initiated from 1 hour post ...
Rifat Khira, G. Uggini
semanticscholar   +1 more source

Research on Integrated Sensor Technology of Electrostatic Discharge Ultrasonic and High-Frequency Electromagnetic Wave for Spacecraft Space Equipment

IEEE transactions on electromagnetic compatibility (Print)
During orbital operation, the space plasma environment affects the spacecraft, leading to the occurrence of electrostatic discharge, which can jeopardize the safe operation of the spacecraft. To enable easy, accurate, and reliable electrostatic discharge
Guo-Zhi Zhang, Zhaoran Cui, Jiangfan Wang, Wenxiang Wang, Xiao-Xing Zhang, Yalan Huang, Changyue Lu   +6 more
semanticscholar   +1 more source

High-frequency electromagnetic radiation affecting moving conductive screens

Acta Astronautica, 2019
Protection of on board electronic devises subjected to high-frequency electromagnetic emission is a crucial problem of Space flight safety. The present paper contains the results of theoretical investigation of the effects of high frequency ...
M. Smirnova, V. Tyurenkova, S. N. Kosinov, V. Nikitin   +3 more
semanticscholar   +1 more source

An Ultra-Wide Stopband Filtering Antenna Against High-Frequency Electromagnetic Interference

IEEE International Symposium on Electromagnetic Compatibility
An ultra-wide stopband filtering antenna with high-frequency electromagnetic interference (EMI) protection capability is presented. Based on a conventional bow-tie antenna, a trapezoidal reactance structure is incorporated to achieve parallel coupling ...
Yuanhang Yang, Yan-Lin Zou, Yiting Shuai
semanticscholar   +1 more source

A study on the time–frequency variation law of electromagnetic radiation signals during concrete cracking

Measurement science and technology
Brittle materials such as concrete, rock, and coal emit weak electromagnetic radiation (EMR) signals during their cracking process. This study analyzed the time–frequency variation law during the concrete cracking process from the perspectives of energy ...
Jinghua Zhang, Li-Sha Peng, Xiangbo Kong, Shu-Zhi Wen, Songling Huang   +4 more
semanticscholar   +1 more source

Realistic Models for Human Exposure to High Frequency (HF) Radiation

Human Interaction with Electromagnetic Fields, 2019
Examples of realistic models of the human head, eye, brain, and the complete body exposed to high-frequency electromagnetic radiation are given. The first part reviews some integral methods for electromagnetics dosimetry; Surface Integral Equation (SIE ...
D. Poljak, M. Cvetković
semanticscholar   +1 more source