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Electrostatic Attraction and Repulsion Explained and Modelled Mathematically Using Classical Physics—A Detailed Mechanism Based on Particle Wave Functions
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作者 Declan Traill 《Journal of Applied Mathematics and Physics》 2024年第4期1050-1062,共13页
The phenomenon of electrical attraction and repulsion between charged particles is well known, and described mathematically by Coulomb’s Law, yet until now there has been no explanation for why this occurs. There has... The phenomenon of electrical attraction and repulsion between charged particles is well known, and described mathematically by Coulomb’s Law, yet until now there has been no explanation for why this occurs. There has been no mechanistic explanation that reveals what causes the charged particles to accelerate, either towards or away from each other. This paper gives a detailed explanation of the phenomena of electrical attraction and repulsion based on my previous work that determined the exact wave-function solutions for both the Electron and the Positron. It is revealed that the effects are caused by wave interactions between the wave functions that result in Electromagnetic reflections of parts of the particle’s wave functions, causing a change in their momenta. 展开更多
关键词 electrostatic Electron POSITRON COULOMB Force ATTRACTION REPULSION wave Function Electric Magnetic Radiation Pressure Shell THEOREM 3D Computer Model Quantum
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不同强度DENBA+电场辅助处理冻结草莓后对其解冻品质影响的比较
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作者 张鑫华 殷睿 +5 位作者 郝义 李斌 于居盟 杨娜 姜晗 孙希云 《现代食品科技》 CAS 北大核心 2024年第2期160-167,共8页
DENBA+技术可利用高压静电,通过共振食品细胞中的水分子使其更为活性化,达到保持营养成分完整、延迟氧化、实现食材保鲜的目的,可与食品速冻保鲜配合使用。为系统地考察外加DENBA+静电场对冻藏草莓超声解冻后品质的影响,该实验以丹东九... DENBA+技术可利用高压静电,通过共振食品细胞中的水分子使其更为活性化,达到保持营养成分完整、延迟氧化、实现食材保鲜的目的,可与食品速冻保鲜配合使用。为系统地考察外加DENBA+静电场对冻藏草莓超声解冻后品质的影响,该实验以丹东九九草莓作为研究对象,通过对比分析感官评价、色差、硬度、汁液流失率、可溶性固形物、总糖、总酚等7项指标,探究草莓在外加不同强度DENBA+静电场条件下冻结对其解冻品质的影响。实验结果表明,经外加高低电场辅助草莓冻结解冻品质均优于空白对照组,且与2000 V高强度DENBA+电场辅助冻结相比,经外加500 V低强度DENBA+电场辅助冻结后,感官评价综合分数最高,色差下降1.70%,硬度提高22.45%,汁液流失率下降27.72%;可溶性固形物含量提高8.16%、总糖含量提高4.79%、总酚含量提高9.90%,上述各项指标低电场辅助处理较高电场辅助处理效果更优且差异显著(P<0.05),其解冻特性呈现相对较好的状态,综合分析得出500V的低电场辅助冻藏草莓的品质较优。 展开更多
关键词 denba+静电场 草莓 冻藏 超声解冻 品质
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Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption 被引量:1
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作者 Zhiqiang Guo Di Lan +6 位作者 Zirui Jia Zhenguo Gao Xuetao Shi Mukun He Hua Guo Guanglei Wu Pengfei Yin 《Nano-Micro Letters》 SCIE EI CAS 2025年第1期507-527,共21页
Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly urgent.Multi-component interface engineering is con... Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly urgent.Multi-component interface engineering is considered an effective means to achieve high-efficiency EMW absorption.However,interface modulation engineering has not been fully discussed and has great potential in the field of EMW absorption.In this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal reduction.By utilizing the different properties of different substances,rich heterogeneous interfaces are constructed.This effectively promotes charge transfer and enhances interfacial polarization and conduction loss.The prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy resin.The minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 GHz.Moreover,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel surfaces.Therefore,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments. 展开更多
关键词 electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection
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Influence of Generalized (r, q) Distribution Function on Electrostatic Waves 被引量:2
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作者 M.N.S. Qureshi SHI Jian-Kui MA Shi-Zhuang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2006年第3期550-554,共5页
Non-Maxwellian particle distribution functions possessing high energy tail and shoulder in the profile of distribution function considerably change the damping characteristics of the waves. In the present paper Landau... Non-Maxwellian particle distribution functions possessing high energy tail and shoulder in the profile of distribution function considerably change the damping characteristics of the waves. In the present paper Landau damping of electron plasma (Langmuir) waves and ion-acoustic waves in a hot, isotropic, unmagnetized plasma is studied with the generalized (r, q) distribution function. The results show that for the Langmuir oscillations Landau damping becomes severe as the spectral index r or q reduces. However, for the ion-acoustic waves Landau damping is more sensitive to the ion temperature than the spectral indices. 展开更多
关键词 generalized (r q) distribution function electrostatic waves DAMPING
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Effect of High-Frequency Electric Field on Propagation of Electrostatic Wave in a Non-Uniform Relativistic Plasma Waveguide
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作者 Kh.H.EL-SHORBAGY 《Plasma Science and Technology》 SCIE EI CAS CSCD 2008年第3期278-283,共6页
The effect of a high frequency (HF) electric field on the propagation of electrostatic wave in a 2D non-uniform relativistic plasma waveguide is investigated. A variable separation method is applied to the two-fluid... The effect of a high frequency (HF) electric field on the propagation of electrostatic wave in a 2D non-uniform relativistic plasma waveguide is investigated. A variable separation method is applied to the two-fluid plasma model. An analytical study of the reflection of electrostatic wave propagation along a magnetized non-uniform relativistic plasma slab subjected to an intense HF electric field is presented and compared with the case of a non relativistic plasma. It is found that, when the frequency of the incident wave is close to the relativistic electron plasma frequency, the plasma is less reflective due to the presence of both an HF field and the effect of relativistic electrons. On the other hand, for a low-frequency incident wave the reflection coefficient is directly proportional to the amplitude of the HF field. Also, it is shown that the relativistic electron plasma leads to a decrease in the value of reflection coefficient in comparison with the case of the non relativistic plasma. 展开更多
关键词 electrostatic wave relativistic plasma waveguide REFLECTION COEFFICIENT separation method
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SUPPRESSING EFFECT OF ELECTROSTATIC WAVES ON DRIFT WAVE INSTABILITY
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作者 YIN Yongxiang 《Chinese Physics Letters》 SCIE CAS CSCD 1990年第9期410-413,共4页
The trajectory of charge particles will be changed by electrostatic wave with a large amplitude in plasma.The dispersion relation of drift waves is derived with the help of integration along the changed trajectory.It ... The trajectory of charge particles will be changed by electrostatic wave with a large amplitude in plasma.The dispersion relation of drift waves is derived with the help of integration along the changed trajectory.It shows that the drift wave instability can be suppressed by so-called“quasi-Larmor radius effect”as long as the condition,K.Se>K.Si,is satisfied,where K is the wave number of drift wave,Se and Si are the amplitudes of shift of electrons and ions,respectively. 展开更多
关键词 wave RADIUS electrostatic
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Electrostatic Waves in Weakly Magnetized Quantum Plasmas
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作者 王春华 孙晓霞 王超群 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第4期771-772,共2页
By using the quantum magnetohydrodynamic model, the electrostatic waves in weakly magnetized quantum plasmas are investigated. The electrons are treated as a quantum and magnetized species, while the ions are classica... By using the quantum magnetohydrodynamic model, the electrostatic waves in weakly magnetized quantum plasmas are investigated. The electrons are treated as a quantum and magnetized species, while the ions are classical unmagnetized ones. The general dispersion relations are derived. It is shown that, both the high frequency electron waves (Langmuire wave and upper-hybrid wave) and the low frequency ion acoustic wave can propagate when the plasmas are cold. 展开更多
关键词 electrostatic wave quantum plasma weakly magnetized
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Formation of Nonlinear Solitary Vortical Structures by Coupled Electrostatic Drift and Ion-Acoustic Waves
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作者 L.Z.Kahlon I.Javaid 《Chinese Physics Letters》 SCIE CAS CSCD 2017年第12期41-45,共5页
Propagation of coupled electrostatic drift and ion-acoustic waves(DIAWs) is presented. It is shown that nonlinear solitary vortical structures can be formed by low-frequency coupled electrostatic DIAWs. Primary wave... Propagation of coupled electrostatic drift and ion-acoustic waves(DIAWs) is presented. It is shown that nonlinear solitary vortical structures can be formed by low-frequency coupled electrostatic DIAWs. Primary waves of distinct(small, intermediate and large) scales are considered. Appropriate set of 3 D equations consisting of the generalized Hasegawa-Mima equation for the electrostatic potential(involving both vector and scalar nonlinearities) and the equation of motion of ions parallel to magnetic field are obtained. According to experiments of laboratory plasma mainly focused to large scale DIAWs, the possibility of self-organization of DIAWs into the nonlinear solitary vortical structures is shown analytically. Peculiarities of scalar nonlinearities in the formation of solitary vortical structures are widely discussed. 展开更多
关键词 Formation of Nonlinear Solitary Vortical Structures by Coupled electrostatic Drift and Ion-Acoustic waves
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Quantum Electrostatic Shock-Waves in Symmetric Pair-Plasmas
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作者 Massoud Akbari-Moghanjoughi 《Open Journal of Acoustics》 2012年第2期72-79,共8页
In this paper, the quantum hydrodynamics (QHD) model is used to study the propagation of small- but finite-amplitude quantum electrostatic shock-wave in an inertial-less symmetric pair (ion) plasma with immobile backg... In this paper, the quantum hydrodynamics (QHD) model is used to study the propagation of small- but finite-amplitude quantum electrostatic shock-wave in an inertial-less symmetric pair (ion) plasma with immobile background positive constituents. The dispersion due to the quantum tunneling and inertial effects as well as dissipation caused by particle collisions leading to the shock-like or double-layer structures are considered. Investigation of both the stationary and traveling-wave solutions to Kortewege-de Veries-Burgers evolution equation show that critical values exist which govern the type of collective plasma structures. Current analysis apply to diverse kind of symmetric plasmas such as laboratory inertially confined or astrophysical pair-ion or electron-positron degenerate plasmas. 展开更多
关键词 electrostatic SHOCK-wave QUANTUM Plasma FERMI Statistics QUANTUM Hydrodynamics KdVB Equation QHD
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KELEA (Kinetic Energy Limiting Electrostatic Attraction) Offers an Alternative Explanation to Existing Concepts Regarding Wave-Particle Duality, Cold Fusion and Superconductivity 被引量:4
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作者 W. John Martin 《Journal of Modern Physics》 2016年第15期1995-2007,共13页
Existing explanations for several major phenomena in physics may need to be reconsidered in light of the description of a natural force termed KELEA (kinetic energy limiting electrostatic attraction). Three examples a... Existing explanations for several major phenomena in physics may need to be reconsidered in light of the description of a natural force termed KELEA (kinetic energy limiting electrostatic attraction). Three examples are selected for discussion in this paper: i) The proposed wave-particle duality of electrons;ii) cold fusion;and iii) superconductivity. The current interpretations of these enigmatic concepts are incomplete and not fully validated by scientific methods. The observations underlying these processes are seemingly consistent with KELEA acting as a repelling force between opposite electrical charges. Relatively simple experiments can be designed to either confirm or exclude KELEA in these and in various other currently perplexing physical phenomena. 展开更多
关键词 KELEA Kinetic Energy Limiting electrostatic Attraction LENR Low Energy Nuclear Reaction wave-Particle Duality Double Slit Experiment Cold Fusion DEUTERIUM Palladium SUPERCONDUCTIVITY Condensed Matter Nuclear Science Brown’s Gas ELECTROLYSIS Activated Water
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Nerve conduction models in myelinated and unmyelinated nerves based on three-dimensional electrostatic interaction 被引量:1
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作者 Tetsuya Akaishi 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第5期779-785,共7页
Until now, nerve conduction has been described on the basis of equivalent circuit model and cable theory, both of which supposed closed electric circuits spreading inside and outside the axoplasm. With these conventio... Until now, nerve conduction has been described on the basis of equivalent circuit model and cable theory, both of which supposed closed electric circuits spreading inside and outside the axoplasm. With these conventional models, we can simulate the propagating pattern of action potential along the axonal membrane based on Ohm's law and Kirchhoff's law. However, we could not fully explain the different conductive patterns in unmyelinated and myelinated nerves with these theories. Also, whether we can really suppose closed electrical circuits in the actual site of the nerves or not has not been fully discussed yet. In this report, a recently introduced new theoretical model of nerve conduction based on electrostatic molecular interactions within the axoplasm will be reviewed. With this new approach, we can explain the different conductive patterns in unmyelinated and myelinated nerves. This new mathematical conductive model based on electrostatic compressional wave in the intracellular fluid may also be able to explain the signal integration in the neuronal cell body and the back-propagation mechanism from the axons to the dendrites. With this new mathematical nerve conduction model based on electrostatic molecular interactions within the intracellular fluid, we may be able to achieve an integrated explanation for the physiological phenomena taking place in the nervous system. 展开更多
关键词 nerve conduction ion channels electrostatic interactions electrostatic compressional wave saltatory conduction myelinated nerves unmyelinated nerves saltatory equations
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Multicomponent Nanoparticles Synergistic One-Dimensional Nanofibers as Heterostructure Absorbers for Tunable and Efficient Microwave Absorption 被引量:14
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作者 Chenxi Wang Yue Liu +2 位作者 Zirui Jia Wanru Zhao Guanglei Wu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2023年第1期236-251,共16页
Application of novel radio technologies and equip-ment inevitably leads to electromagnetic pollution.One-dimensional polymer-based composite membrane structures have been shown to be an effective strategy to obtain hi... Application of novel radio technologies and equip-ment inevitably leads to electromagnetic pollution.One-dimensional polymer-based composite membrane structures have been shown to be an effective strategy to obtain high-performance microwave absorbers.Herein,we reported a one-dimensional N-doped carbon nanofibers material which encapsulated the hollow Co_(3)SnC_(0.7) nano-cubes in the fiber lumen by electrospinning.Space charge stacking formed between nanoparticles can be channeled by longitudinal fibrous structures.The dielectric constant of the fibers is highly related to the carbonization temperature,and the great impedance matching can be achieved by synergetic effect between Co_(3)SnC_(0.7) and carbon network.At 800℃,the necklace-like Co_(3)SnC_(0.7)/CNF with 5%low load achieves an excellent RL value of−51.2 dB at 2.3 mm and the effective absorption bandwidth of 7.44 GHz with matching thickness of 2.5 mm.The multiple electromagnetic wave(EMW)reflections and interfacial polarization between the fibers and the fibers internal contribute a major effect to attenuating the EMW.These strategies for regulating electromagnetic performance can be expanded to other electromagnetic functional materials which facilitate the development of emerging absorbers. 展开更多
关键词 electrostatic spinning Necklace-structured nanofibers Broadband response Electromagnetic wave absorption
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Electromagnetic Radiation Causes Weight Loss and Weight Destabilization of Objects with Presumed Elevated Levels of KELEA (Kinetic Energy Limiting Electrostatic Attraction), Relevance to Human Health and to Global Warming
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作者 W.John Martin 《Journal of Modern Physics》 2019年第3期195-213,共19页
A natural force has been proposed, which is required to prevent the fusion and disappearance of the discrete electrical charges that are present on electrostatically attached opposing electrical charges. This force ma... A natural force has been proposed, which is required to prevent the fusion and disappearance of the discrete electrical charges that are present on electrostatically attached opposing electrical charges. This force may also explain the repulsion between objects with either matching positive or negative electrical charges. The energy of this force is referred to as KELEA (kinetic energy limiting electrostatic attraction). KELEA is especially attracted to dipolar compounds and to other materials with spatially separated opposite electrical charges. These compounds can be used to increase the level of KELEA in water. KELEA activated water can become an added source of KELEA for objects that are placed in close proximity to the water. It is generally held that the weight of an object is solely determined by its mass in relation to that of the earth. Yet, it was previously reported that the measured weight of certain KELEA attracting objects can undergo considerable variability over time. This observation is consistent with the concept that KELEA can contribute to the measured weight of certain objects. The present study strengthens this concept by demonstrating that the weight of cellulose containing materials, including paper, cotton fabrics, and wood, is increased if the materials are placed close to containers of KELEA activated water. It is further shown that electromagnetic radiation can significantly reduce the added weight of the KELEA exposed cellulose containing materials. Moreover, the previously added weight of the materials can be regained by replacing the materials back into the KELEA enhanced environment. It is proposed that the electrical charges that accompany electromagnetic radiation are able to competitively withdraw some of the KELEA from certain KELEA-enhanced objects. This effect can be reliably demonstrated using single sheets of writing paper, which are primarily composed of mechanically-bonded, branched cellulose fibers. There can be considerable fluctuations of the weight of the materials exposed to electromagnetic radiation after having been placed nearby to KELEA activated water. The weight instability is interpreted as being due to the electromagnetic radiation also triggering a dynamic process of rapid additions and removals of significant quantities of KELEA to and from objects. These observations are relevant to the further understanding of KELEA and to the potential health and climate consequences of manmade electromagnetic radiation causing a reduction in the environmental levels of KELEA. 展开更多
关键词 KELEA Alternative Cellular Energy Paper Cotton Wood Cellulose Activated Water WEIGHT Gravity Weather Global WARMING Clouds electrostatic Electromagnetic Radiation Radio waveS Microwaves Cosmic waveS INKJET Printing Electropollution
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磁重联与等离子体波动 被引量:1
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作者 任勇 戴磊 +2 位作者 王赤 周猛 王荣生 《地球与行星物理论评(中英文)》 2024年第3期267-291,共25页
磁场重联与等离子体波动之间存在显著的联系.其中准静态波动、激波和动力学阿尔芬波的本征模是磁重联结构的重要组成部分.而其它的高频波动,不仅能吸收粒子的自由能,还可以导致粒子的加热和反常电阻的产生.这些多尺度的波动过程揭示了... 磁场重联与等离子体波动之间存在显著的联系.其中准静态波动、激波和动力学阿尔芬波的本征模是磁重联结构的重要组成部分.而其它的高频波动,不仅能吸收粒子的自由能,还可以导致粒子的加热和反常电阻的产生.这些多尺度的波动过程揭示了磁重联中能量转换的多尺度性质.本文探讨了地球磁层磁重联过程中的各种等离子体波动,涵盖了动力学阿尔芬波、低混杂波、哨声波、静电孤波、离子声波以及电子尺度的高频静电波,并分析了它们在磁重联中的特性和作用.近期的研究成果表明,动力学阿尔芬波(kinetic Alfven wave,KAW)能够描述磁重联区域的微观结构,其中包括霍尔磁场、霍尔电场、平行电场、霍尔电流以及场向电流.在这一过程中,霍尔电场作用于离子,有助于提高重联速率.低混杂波主要在电流片的密度梯度较大处被激发,并对电子进行平行加热.而哨声波是由朗道共振和回旋共振机制驱动的.据当前研究所示,低混杂波和哨声波对于重联过程中的反常电阻效应的影响是次要的.静电孤波多在磁重联分界线区域出现,其对等离子体的加热效应仍需进一步研究.与此同时,关于高频静电波(例如高混杂波和电子伯恩斯坦波)的研究重点在于磁重联的扩散区,这些波被认为对该区域中的电子能量转换过程起到了关键作用.这些最新研究成果为深化我们对磁重联以及等离子体波动的理解提供了宝贵的参考. 展开更多
关键词 磁场重联 等离子波动 KAW本征模 低混杂波 哨声波 静电孤波
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Electrostatic Encapsulation of Cobalt Ions into Crystalline Framework Derived Polymer Aerogel:Ultra-light,Pressure Resistant,Hydrophobic,Photothermal Conversion,Heat Insulation and Infrared Stealth
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作者 Yi-Fan Kang Jin-Lu Tang +5 位作者 Ming Song Wei Wang Jia-Cheng Ma Zhan-You Ji Tong Liu Wen-Huan Huang 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2024年第7期946-957,I0007,共13页
A variety of electromagnetic wave absorption materials(EMWAs)have been reported,but the integration of powder materials and multifunctional devices should be investigated in-depth to adapt to practical demands.Herein,... A variety of electromagnetic wave absorption materials(EMWAs)have been reported,but the integration of powder materials and multifunctional devices should be investigated in-depth to adapt to practical demands.Herein,carbon-coated cobalt composites were prepared by adsorbing magnetic metal cations into an anionic crystalline framework through an electrostatic encapsulate process.Excellent reflection loss(RL_(min))of-40.49 d B and effective absorption bandwidth(EAB)of 5.36 GHz(RL<-10 d B,10.4-15.76 GHz)was achieved with an optimal radar cross section(RCS)reduction of 34.9 dB·m^(2) for the sample tested.For commercial applications,Co@CN-4 was integrated into sodium carboxymethyl cellulose(CMC)aerogel to create an ultra-lightweight composite aerogel that is compressive resistant and heat-holding while also having photothermal conversion capabilities.The hydrophobic modification makes it more widely useful.This study provides a new strategy for EWAMs to integrate versatility and improve their application prospects. 展开更多
关键词 electrostatic incorporation Magnetic nanoparticle Co@CN composites Electromagnetic wave absorbing Metal-organic framework
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MATLAB仿真在电磁场与电磁波课程教学中的辅助应用
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作者 郭悦 鲁小利 段昱臻 《电子质量》 2024年第4期27-30,共4页
针对电磁场与电磁波理论知识晦涩难懂的特点,利用MATLAB强大的工程计算功能绘制二维和三维电磁场图形,增加了教学可视化效果,便于学生理解与掌握理论知识。通过对静电场点电荷和电偶极子电场分布的二维图形、以电磁波传播的三维图形的绘... 针对电磁场与电磁波理论知识晦涩难懂的特点,利用MATLAB强大的工程计算功能绘制二维和三维电磁场图形,增加了教学可视化效果,便于学生理解与掌握理论知识。通过对静电场点电荷和电偶极子电场分布的二维图形、以电磁波传播的三维图形的绘制,生动形象地展示了电磁场内部的分布状态和神秘电磁波的传播形态,使理论概念清晰再现,激起了学生对电磁场与电磁波课程的学习兴趣。 展开更多
关键词 MATLAB 电磁场与电磁波 静电场 电磁波传播
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DENBA+静电波保鲜技术应用浅析 被引量:10
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作者 王伟强 董丹华 《新疆农机化》 2017年第2期25-27,共3页
食物、果蔬、海鲜、肉类等的保鲜贮藏期延长方式是否有毒、有害,是否新鲜环保、无公害等已成为人们日常生活关注的热点。文中简述了冷链产业中DENBA+保鲜技术的一般机理和特点及在食品冷链保鲜中的应用,提出存在的问题和发展方向。
关键词 denba+静电波 保鲜技术 冷链产业 应用
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DENBA+静电场猪肉保鲜效果研究 被引量:11
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作者 魏国平 冯志刚 +1 位作者 熊双丽 黄业传 《现代食品》 2019年第23期99-102,105,共5页
本文主要研究了DENBA+静电场技术(输出电压2200 V和3400 V)对猪肉冻结、解冻速率、猪肉嫩度和蛋白质氧化等品质变化,以及冷藏猪肉菌落总数的影响。结果表明,DENBA+静电场处理可以提高猪肉冻结速率,使解冻时间减少一半,挥发性盐基氮、脂... 本文主要研究了DENBA+静电场技术(输出电压2200 V和3400 V)对猪肉冻结、解冻速率、猪肉嫩度和蛋白质氧化等品质变化,以及冷藏猪肉菌落总数的影响。结果表明,DENBA+静电场处理可以提高猪肉冻结速率,使解冻时间减少一半,挥发性盐基氮、脂肪氧化速率和嫩度降低,蛋白质氧化速率增加,电场处理可以减少冷藏猪肉菌落总数。 展开更多
关键词 静电场 猪肉 保鲜
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Scattering of Electromagnetic Waves by Drift Vortex in Plasma
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作者 王栋 陈银华 王舸 《Plasma Science and Technology》 SCIE EI CAS CSCD 2008年第1期1-7,共7页
In a quasi-two-dimensional model, the scattering of incident ordinary electromag- netic waves by a dipole-electrostatic drift vortex is studied with first-order Born approximation. The distribution of the scattering c... In a quasi-two-dimensional model, the scattering of incident ordinary electromag- netic waves by a dipole-electrostatic drift vortex is studied with first-order Born approximation. The distribution of the scattering cross-section and total cross-section are evaluated analytically in different approximate conditions, and the physical interpretations are discussed. When the wavelength of incident wave is much longer than the vortex radius (kia〈〈1), it is found that the angle at which the scattering cross-section reaches its maxim depends significantly on the approximation of the parameters of the vortex used. It is also found that the total scattering cross-section has an affinitive relation with the parameters of the plasma, while it is irrelevant to the frequency of the incident wave in a wide range of parameters of the vortex. In a totally different range of parameters when incident wave is in the radar-frequency range (then kia 〈〈 1, the wavelength of incident wave is much shorter than the vortex radius), the numerical procedure is conducted with computer in order to obtain the distribution and the total expression of the scattering crosssection. Then it is found that the total scattering cross-section in the low frequency range is much larger than that in high frequency range, so the scattering is more effective in the low frequency range than in high frequency range. 展开更多
关键词 dipole-electrostatic drift vortex scattering of electromagnetic wave scattering cross-section radar wave
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Exact Solution to the Equation of Motion of a Charged Particle Driven by an Electrostatic Wave
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作者 杨一明 靳振兴 钱宝良 《Chinese Physics C》 SCIE CAS CSCD 北大核心 2008年第z1期229-230,共2页
An exact solution is derived for the equation of motion of a charged particle driven by an electrostatic wave.The explicit expression of particle velocity is obtained,and the trapping condition of the charged particle... An exact solution is derived for the equation of motion of a charged particle driven by an electrostatic wave.The explicit expression of particle velocity is obtained,and the trapping condition of the charged particle in the electrostatic wave is also derived exactly.The interaction between the charged particle and the electrostatic wave is discussed,which is a supplement to the existing textbook of plasma physics.The results are of interest to particle accelerators,microwave tubes,and basic plasma processes. 展开更多
关键词 charged particle electrostatic wave exact solution for the equation
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