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electromagnetic radiation of granite under dynamic compression

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International Journal of Mining Science and Technology 2024年第10期34卷 1427-1441页

作者： Juncheng Li Qingming Zhang Zhixiang Liu Renrong Long Xianzhe Zhong Wenjin Liu Mingze Wu Xin Hu Jinlong Xu Jiankang Ren Wei Wei Qiang Liu Keqin Zheng Haozhe Liang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China Taiyuan University of Technology Taiyuan 030024China

To elucidate the characteristics and mechanism of electromagnetic radiation in granite under impact loading,based on the quasi-static compression tests,this paper conducts dynamic compression experiments on granite using Hopkinson pressure bar and one-stage light-gas gun as loading *** with experimental and theoretical analyses,the relationship between mechanical and electromagnetic responses under impact loads of different intensities,and the time-domain signals of electromagnetic radiation generated by a single crack under different strain rates are *** intensity and frequency of electromagnetic radiation increase with the increasing compressive strain *** to the thermal activation theory,it reveals the microscopic mechanism of the transition from intergranular microcracks to transgranular microcracks in terms of strain *** also serves as the physical basis for the increase in electromagnetic radiation intensity amplitude and frequency with increasing compressive strain *** microcracks are the primary cause of electromagnetic radiation generated by fractures.

关键词： Impact load Granite electromagnetic radiation Transgranular microcracks

Influence of the Gaussian colored noise and electromagnetic radiation on the propagation of subthreshold signals in feedforward neural networks

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Science China(Technological Sciences) 2021年第4期64卷 847-857页

作者： GE MengYan WANG GuoWei JIA Ya Department of Physics Central China Normal UniversityWuhan 430079China

Iterative methods are used to simulate the in vitro feedforward neural networks in physiological *** can be propagated to a minimum of ten ***,the discharge activity of each group will be more *** feedforward neural networks have a wide range of applications in machine learning,and the weight of synapses considerably influences the propagation of weak ***,we investigated the effect of Gaussian colored noise and electromagnetic radiation on the propagation of the subthreshold excitatory postsynaptic current signals in the input layer of the multilayer Izhikevich neural feedforward *** the absence of electromagnetic radiation,the excitatory postsynaptic current signal is stably propagated and amplified in multilayer feedforward neural networks under the optimal Gaussian colored noise strength or correlation time in the output layer of the *** with the case in which there is no electromagnetic radiation,the presence of electromagnetic radiation slightly reduces the propagation of weak ***,the time required to propagate the excitatory postsynaptic current signal to the output layer increases with the increasing feedback *** feedforward neural network considered in this study is a considerably simple *** complex structures,such as backward connection and delayed feedback,can be observed in real biological ***,the next step will be to study more complex neural models with neuron models based on the physiological experimental data and compare them with real biological ***,the study of neural networks can be combined with an experimental study about the auditory nervous system of bats to understand the biological mechanism associated with the auditory system function of bats from two perspectives.

关键词： feedforward neural network colored noise electromagnetic radiation signal propagation

Predicting microseismic,acoustic emission and electromagnetic radiation data using neural networks

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 616-629页

作者： Yangyang Di Enyuan Wang Zhonghui Li Xiaofei Liu Tao Huang Jiajie Yao School of Materials Engineering Changshu Institute of TechnologySuzhou215506China Key Laboratory of Gas and Fire Control for Coal Mines(China University of Mining and Technology) Ministry of EducationXuzhou221116China School of Safety Engineering China University of Mining and TechnologyXuzhou221116China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou221116China

Microseism,acoustic emission and electromagnetic radiation(M-A-E)data are usually used for predicting rockburst ***,it is a great challenge to realize the prediction of M-A-E *** this study,with the aid of a deep learning algorithm,a new method for the prediction of M-A-E data is *** this method,an M-A-E data prediction model is built based on a variety of neural networks after analyzing numerous M-A-E data,and then the M-A-E data can be *** predicted results are highly correlated with the real data collected in the *** field verification,the deep learning-based prediction method of M-A-E data provides quantitative prediction data for rockburst monitoring.

关键词： Microseism Acoustic emission electromagnetic radiation Neural networks Deep learning Rockburst

FEM for Blood-Based SWCNTs Flow Through a Circular Cylinder in a Porous Medium with electromagnetic radiation

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Communications in Theoretical Physics 2019年第12期71卷 1425-1434页

作者： Mohamed R.Eid A.F.Al-Hossainy M.Sh.Zoromba Department of Mathematics Faculty of ScienceNorthern Border UniversityArar1321Saudi Arabia Department of Mathematics Faculty of ScienceNew Valley UniversityAl-KhargaAl-Wadi Al-Gadid72511Egypt Department of Chemistry Faculty of ScienceNew Valley UniversityAl-KhargaAl-Wadi Al-Gadid72511Egypt Department of Chemistry Faculty of ScienceNorthern Border UniversityArar1321Saudi Arabia Department of Chemical and Materials Engineering King Abdulaziz UniversityRabigh 21911Saudi Arabia Department of Chemistry Faculty of SciencePort Said University42521 Port-SaidEgypt

This work aims to study magnetohydrodynamic flow through a circular cylinder in a horizontal position of SWCNTs in blood as a base fluid in the existence of non-linear thermal radiation and heat source/*** kinds of nanoparticles shapes are *** study is employed the finite element technique to explore and enhance the influences of essential parameters on temperature profiles and is debated the heat transport within blood injects with SWCNTs and exposes to electromagnetic *** treatment with thermal analysis and heat transfer rate being a better substitute more than surgery and chemotherapy for cancer *** of nanoparticles thermal features is a mounting area of nanomedicine field because of the probable for purposeful demolition of cancer *** remedy is relied on many parameters,including nanofluid thermal conductivity,nanoparticles volume fraction,thermal radiation and power and heat *** numerical solutions for flow and heat transfer features are assessed for diverse governing parameters *** obtained results are substantiated against the relevant numerical results in the published *** show that both flow velocity and temperature increase for larger values of thermal radiation,heat source and SWCNTs volume fraction with lamina and cylinder ***,spherical shape of SWCNTs occurs high disturbances in velocity and temperature distribution in the case of cooled cylinder.

关键词： finite element method heat transfer blood SWCNTs electromagnetic radiation

Characteristic Mode Analysis: Application to electromagnetic radiation, Scattering, and Coupling Problems

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Chinese Journal of Electronics 2023年第4期32卷 663-677页

作者： DENG Xuan ZHANG Di CHEN Yikai YANG Shiwen University of Electronic Science and Technology of China

Recent years, the theory of characteristic modes has emerged as a powerful analysis technique in antenna engineering, providing a means to reveal the natural resonant properties of objects and providing a variety of modal parameters. Based on these modal parameters, advanced techniques have been developed based on the theory of characteristic modes to address a wide range of electromagnetic radiation, scattering, and coupling problems. This review provides an overview of some of the latest characteristic mode-based techniques for wideband design, circular polarization, radiation pattern control, scattering control, and mutual coupling control. In addition, future perspectives are discussed, highlighting the potential of characteristic modes for addressing even more complex electromagnetics problems.

关键词： Couplings Polarization Mutual coupling Electric potential Antenna theory electromagnetic radiation Characteristic mode analysis

Environmental impact of electromagnetic radiation from the 10kWmedium wave transmitter of Weihai Broadcasting Station

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Journal of Environmental Sciences 1995年第4期7卷 461-467页

作者： Wen Congjiang Lu Deming Wang Shuquan,Wang Baosheng Hu Baoge(Department of Physics , Ocean University of Qingdao, Qingdao 266003 , China)

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关键词： environmental impact assessment electromagnetic radiation broadcasting station electromagneticpollution.

The Development of a New Anti-electromagnetic radiation Fabric

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Journal of Donghua University(English Edition) 2009年第2期26卷 200-203页

作者：赵书林王恩清 College of Textiles Tianjin Polytechnic University

By the study of electromagnetic shielding principle,we have designed some new style fabrics for anti-electromagnetic radiation through the research of raw materials and fabric texture,and solved the key technical problems such as the manufacture of composite yarn which composed of stainless steel filament and cotton *** a newly developed high technology material,the new style anti-electromagnetic radiation fabric was woven by the special yarn composed of stainless filament and nature *** new fabric overcomes the defect in the production and service of the shielding fabrics at present and satisfies the people's requirement the routine job and *** further improvement,it can be widely used in aviation,navigation and military project,underground project and so on.

关键词： electromagnetic radiation stainless steel filament anti-electromagnetic radiation fabric

Correlation of electromagnetic radiation emitted from coal or rock to supporting resistance

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Mining Science and Technology 2009年第3期19卷 317-320页

作者： JIA Hui-lin WANG En-yuan SONG Xiao-yan ZHANG Hong-jie LI Zhong-hui School of Safety Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

More accurate forecasting of rock burst might be possible from observations of electromagnetic radiation emitted in the *** analyzed experimental observations and field data from the Muchengjian coal mine to study the relationship between electromagnetic radiation signal intensity and stress during the fracturing of coal, or rock, and samples under *** results show that the signal intensity is positively correlated with *** addition, we investigated the change in the electromagnetic radiation intensity, the supporting resistance in a real coal mine environment, and the coal or rock stress in the mining *** data analysis indicates that:1) electromagnetic radiation intensity can accurately reflect the distribution of stress in the mining area;and, 2) there is a correlation between electromagnetic radiation intensity and supporting *** research has some practical guiding significance for rock burst forecasting and for the prevention of accidents in coal mines.

关键词： electromagnetic radiation rock burst supporting resistance coal or rock

Effect of 935-MHz Phone-simulating electromagnetic radiation on Endometrial Glandular Cells during Mouse Embryo Implantation

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2012年第5期32卷 755-759页

作者：刘文惠郑新民屈在卿张铭周春马玲张元珍 Reproductive Medicine Center Zhongnan HospitalWuhan University Department of Urological Medicine Zhongnan HospitalWuhan University Department of Obstetrics and Gynecology the First Hospital of Kunming University of Medical Science

This study examined the impact of 935MHz phone-simulating electromagnetic radiation on embryo implantation of pregnant *** 7-week-old Kunming (KM) female white mouse was set up with a KM male mouse in a single cage for mating overnight after induction of *** the first three days of pregnancy,the pregnant mice was exposed to electromagnetic radiation at low-intensity (150 μW/cm2,ranging from 130 to 200 μW/cm2,for 2-or 4-h exposure every day),mid-intensity (570 μW/cm2,ranging from 400 to 700 μW/cm2,for 2-or 4-h exposure every day) or high-intensity (1400 μW/cm2,ranging from 1200 to 1500 μW/cm2,for 2-or 4-h exposure every day),*** the day 4 after gestation (known as the window of murine embryo implantation),the endometrium was collected and the suspension of endometrial glandular cells was *** scanning microscopy was employed to detect the mitochondrial membrane potential and intracellular calcium ion *** high-intensity,2-and 4-h groups,mitochondrial membrane potential of endometrial glandular cells was significantly lower than that in the normal control group (Pelectromagnetic radiation and longer length of the radiation are required to inflict a remarkable functional and structural damage to mitochondrial *** data demonstrated that electromagnetic radiation with a 935-MHz phone for 4 h conspicuously decreased mitochondrial membrane potential and lowered the calcium ion concentration of endometrial glandular *** is suggested that high-intensity electromagnetic radiation is very likely to induce the death of embryonic cells and decr

关键词： electromagnetic radiation pregnant mouse embryo implantation mitochondrial mem-brane potential calcium ion concentration