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Journal articles on the topic 'High frequency electromagnetic field'

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Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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1

Chirkova, V. Yu, Ye A. Sharlayeva, and I. Ye Stas. "Boiling temperature and the enthalpy of water vaporization exposed to high frequency electromagnetic field." Bulletin of the Karaganda University. "Chemistry" series 94, no. 2 (June 28, 2019): 51–55. http://dx.doi.org/10.31489/2019ch2/51-55.

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2

Bochkarev, I. V., and I. V. Bryakin. "Development of a new method of diagnostics electromagnetic drive power and commutation mechanisms." Power engineering: research, equipment, technology 22, no. 3 (September 8, 2020): 68–77. http://dx.doi.org/10.30724/1998-9903-2020-22-3-68-77.

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A new method for diagnosing power and switching electromagnetic mechanisms containing a control electromagnet and a movable armature is proposed. The movable element of the diagnosed electromagnetic mechanism (EMM) is irradiated with a high-frequency probing electromagnetic field and the reradiated electromagnetic field from it is recorded. The source of the probing field and the receiver of the re-radiated field is the EMM electromagnet winding. The probing electromagnetic field is formed by imposing on the low-frequency high-voltage operating voltage of the supply winding of the electromagnet EMM an additional high-frequency low-voltage voltage. The diagnostic parameter is determined by algorithmic processing of the measurement results of the magnitude of the voltage increment on the EMM winding, caused by exposure to a reradiated electromagnetic field, and the technical condition of the diagnosed electromagnetic mechanism is determined by the absolute value of the di-agnostic parameter. The method allows to diagnose the current state of the main functional units of the EMM and to control its operating modes as a whole.

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3

Stas, Irina?E, Boris?P Shipunov, and Tatyana?S Ivonina. "The Stripping Voltammetry In High Frequency Electromagnetic Field." Electroanalysis 17, no. 9 (May 2005): 794–99. http://dx.doi.org/10.1002/elan.200303146.

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4

Wang, Hong Ming, Chang Chen Qu, Xiao Jian Fan, and Gui Rong Li. "Simulation Study on the Force of Particles Migrating in Molten Metal under High-Frequency Magnetic Field." Advanced Materials Research 1095 (March 2015): 851–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1095.851.

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According to the basic principles of electromagnetism, the magnetic flux density on the surface of the metal melt was calculated by numerical simulation method. The relational expression of the electromagnetic body force and the magnetic flux density was deduced. The results show that the electromagnetic body force in the melt is directly proportional to the square of the magnetic induction intensity. Increasing the electric current, the electromagnetic body force in the melt can be increased effectively. Increasing the frequency, the particular electromagnetic body force within the melt can be increased first and then decreased.

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5

Konrad, A., and I. A. Tsukerman. "Comparison of high- and low-frequency electromagnetic field analysis." Journal de Physique III 3, no. 3 (March 1993): 363–71. http://dx.doi.org/10.1051/jp3:1993136.

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6

Kim, Hoyoung, Joon-Pyo Park, Heetae Jeong, and Jongkeun Kim. "Continuous Casting of Billet with High Frequency Electromagnetic Field." ISIJ International 42, no. 2 (2002): 171–77. http://dx.doi.org/10.2355/isijinternational.42.171.

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7

Kibis, O. V., V. K. Kozin, I. V. Iorsh, and I. A. Shelykh. "Quantum Rings Dressed by a High-Frequency Electromagnetic Field." Semiconductors 52, no. 14 (December 2018): 1806–8. http://dx.doi.org/10.1134/s1063782618140130.

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8

Lutsenko, Yu Yu, V. A. Vlasov, and I. A. Tikhomirov. "Electromagnetic field decay in high-frequency flare discharge plasma." Technical Physics Letters 32, no. 5 (May 2006): 379–80. http://dx.doi.org/10.1134/s106378500605004x.

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9

Tkatchenko, S., F. Rachidi, and M. Ianoz. "High-frequency electromagnetic field coupling to long terminated lines." IEEE Transactions on Electromagnetic Compatibility 43, no. 2 (May 2001): 117–29. http://dx.doi.org/10.1109/15.925531.

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10

Masychev. "High-frequency electromagnetic field distribution indicator for medical use." Biomedical Engineering 30, no. 3 (1996): 173. http://dx.doi.org/10.1007/bf02383988.

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11

Masychev, S. I. "High-frequency electromagnetic field distribution indicator for medical use." Biomedical Engineering 30, no. 3 (May 1996): 173–76. http://dx.doi.org/10.1007/bf02363048.

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12

Modanese, Giovanni. "High-Frequency Electromagnetic Emission from Non-Local Wavefunctions." Applied Sciences 9, no. 10 (May 15, 2019): 1982. http://dx.doi.org/10.3390/app9101982.

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In systems with non-local potentials or other kinds of non-locality, the Landauer-Büttiker formula of quantum transport leads to replacing the usual gauge-invariant current density J with a current J e x t which has a non-local part and coincides with the current of the extended Aharonov-Bohm electrodynamics. It follows that the electromagnetic field generated by this current can have some peculiar properties and in particular the electric field of an oscillating dipole can have a long-range longitudinal component. The calculation is complex because it requires the evaluation of double-retarded integrals. We report the outcome of some numerical integrations with specific parameters for the source: dipole length ∼10−7 cm, frequency 10 GHz. The resulting longitudinal field E L turns out to be of the order of 10 2 to 10 3 times larger than the transverse component (only for the non-local part of the current). Possible applications concern the radiation field generated by Josephson tunnelling in thick superconductor-normal-superconductor (SNS) junctions in yttrium barium oxide (YBCO) and by current flow in molecular nanodevices.

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13

Michałowska, Joanna, Łukasz Puzio, Arkadiusz Tofil, and Jarosław Pytka. "Measuring Exposure to High-Frequency Electromagnetic Fields Experienced by a Helicopter Crew During Flight." Transactions on Aerospace Research 2022, no. 1 (March 1, 2022): 59–65. http://dx.doi.org/10.2478/tar-2022-0004.

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Abstract High-frequency electromagnetic fields (EMF) can have a negative effect on both the human body and electronic devices. Monitoring and measurement of the electromagnetic field generated by devices is important from the point of view of environmental protection, the human body and electromagnetic compatibility. In this study, we tested the value of the electromagnetic field strength determined by the NHT3DL by Microrad with measurement probes during flights in the Robinson R44 helicopter. The reference point for the results obtained were the normative limits of the electromagnetic field permitted to affect the crew and passengers during flight. The maximum RMS values recorded during the measurements were E = 4.399 V/m in the 100 kHz–6.5 GHz frequency band and for the magnetic component H = 2.829 A/m in the 300 kHz–30 MHz frequency band. These results were passed to the Statistica 13.3 software for a detailed stochastic analysis of the values tested.

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14

Hutsol, Taras, Volodymyr Ivanyshyn, Serhii Yermakov, and Serhii Komarnitskyi. "Usage of low-energy electromagnetic fields of marginal high-frequency range for reconstruction of the injured by infectious microorganisms animal skin." Independent Journal of Management & Production 10, no. 7 (May 1, 2019): 739. http://dx.doi.org/10.14807/ijmp.v10i7.907.

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The paper is concerned with the mechanism of interaction between the electromagnetic field and the microorganisms. Currently the issue for usage of low-energy electromagnetic fields of marginal high-frequency range for reconstruction of the injured by infectious microorganisms animal skin is of great interest. The use of low-energy electromagnetic fields for restoring animal skin cover is significantly different from the existing physical and therapy procedures.The authors made the theoretical and the experimental research on updating and developing the low-energy electromagnetic technology and hardware of the electromagnetic field of high-frequency range to restore animal skin cover of infected wounds.The process of interaction between low-energy electromagnetic fields of high-frequency range in terms of infected animal skin cover is examined on the basis of the mathematic model. Particular attention was paid to theoretical aspect and cellular level analysis of the biotronic parameters of electromagnetic fields for the oppression of infectious microorganisms in wounds of animal skin cover and its effective reunion.

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15

Iatcheva, Ilona, Georgi Gigov, Georgi Kunov, and Rumena Stancheva. "Analysis of induction heating system for high frequency welding." Facta universitatis - series: Electronics and Energetics 25, no. 3 (2012): 183–91. http://dx.doi.org/10.2298/fuee1203183i.

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The aim of the work is the investigation of induction heating system used for longitudinal, high frequency pipe welding.Coupled electromagnetic and temperature field distribution has been studied in order to estimate system efficiency and factors influencing the quality of the welding process and required energy. The problem was considered as three dimensional. Time harmonic electromagnetic and transient thermal field has been solved using finite element method and COMSOL 4.2 software package.

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16

Nekrasov, A. K., and F. Z. Feygin. "Dust grain dynamics due to nonuniform and nonstationary high-frequency radiations in cold magnetoplasmas." Annales Geophysicae 24, no. 2 (March 23, 2006): 467–74. http://dx.doi.org/10.5194/angeo-24-467-2006.

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Abstract. A general nonlinear theory for low-frequency electromagnetic field generation due to high-frequency nonuniform and nonstationary electromagnetic radiations in cold, uniform, multicomponent, dusty magnetoplasmas is developed. This theory permits us to consider the nonlinear action of all waves that can exist in such plasmas. The equations are derived for the dust grain velocities in the low-frequency nonlinear electric fields arising due to the presence of electromagnetic cyclotron waves travelling along the background magnetic field. The dust grains are considered to be magnetized as well as unmagnetized. Different regimes for the dust particle dynamics, depending on the spatio-temporal change of the wave amplitudes and plasma parameters, are discussed. It is shown that induced nonlinear electric fields can have both an electrostatic and electromagnetic nature. Conditions for maximum dust acceleration are found. The results obtained may be useful for understanding the possible mechanisms of dust grain dynamics in astrophysical, cosmic and laboratory plasmas under the action of nonuniform and nonstationary electromagnetic waves.

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17

Galimbekov, A. D., M. A. Kadyrov, D. A. Drugov, G. I. Muratova, and M. A. Baizharikova. "Investigation of The Influence of High Frequency Electromagnetic Fields on Sorption Processes." Latvian Journal of Physics and Technical Sciences 56, no. 1 (February 1, 2019): 53–59. http://dx.doi.org/10.2478/lpts-2019-0005.

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Abstract The present paper studies the effect of high frequency electromagnetic fields on sorption processes. The equation of sorption kinetics describes the main mechanisms of the above effect. This can serve as the basis for more effective high frequency electromagnetic field technology to increase oil recovery by reducing adsorption of oil components on the porous bed skeleton.

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18

Tian, Peng, Xing Juan Wang, Li Guang Zhu, Yue Kai Xue, Wei Chen, and Wei Tian. "Numerical Simulation of High Frequency Electromagnetic Field in Soft Contact Continuous Casting Mold." Advanced Materials Research 482-484 (February 2012): 1534–37. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1534.

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Based on electromagnetic theory, a billet model electromagnetic continuous casting of physical and mathematical were established. The three-dimensional mold for billet electromagnetic field was calculated by finite element method of ANSYS three-dimensional numerical simulation. Then the distribution of the electromagnetic field inside the crystal was gotten. At the same time, the influence of the power frequency and current strength on the intensity and distribution of the magnetic field were simulated. The result shows that the maximum of the electromagnetic flux density lies in the center of induction coil (steel surface in the center of the coil), and the magnetic flux density gradually reduces along the casting direction; the magnetic flux density increases while the power frequency is increasing; the magnetic flux density increases with the increasing of the current intensity.

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19

Park, Joonpyo, Hoyoung Kim, Heetae Jeong, Goohwa Kim, Myung Jong Cho, Jea-Sook Chung, Minsu Yoon, Kyung Ryul Kim, and Joo Choi. "Continuous Casting of Steel Billet with High Frequency Electromagnetic Field." ISIJ International 43, no. 6 (2003): 813–19. http://dx.doi.org/10.2355/isijinternational.43.813.

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20

Salunke, Balwant P., Sudhir N. Umathe, and Jagatpalsingh G. Chavan. "Behavioral in-effectiveness of high frequency electromagnetic field in mice." Physiology & Behavior 140 (March 2015): 32–37. http://dx.doi.org/10.1016/j.physbeh.2014.12.019.

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21

Fujisaki, Keisuke. "Electromagnetic Field Transmission Characteristics in High Frequency by Particle Effect." ISIJ International 49, no. 10 (2009): 1636–43. http://dx.doi.org/10.2355/isijinternational.49.1636.

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22

Hatsagortsian, K. Z., and T. R. Hovhannissian. "Stimulated resonant bremsstrahlung in a high-frequency electromagnetic pump field." Physics Letters A 221, no. 1-2 (September 1996): 5–13. http://dx.doi.org/10.1016/0375-9601(96)00366-0.

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23

Lutsenko, Yu Yu, and V. A. Vlasov. "The electromagnetic field characteristics of the high-frequency torch discharge." Czechoslovak Journal of Physics 56, S2 (October 2006): B925—B931. http://dx.doi.org/10.1007/s10582-006-0305-1.

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24

Wang, Hong Ming, Bo Feng Yang, Bang Min Song, and Yi Nan Zhao. "Transient Simulation of Electromagnetic Field during EMCC Process." Applied Mechanics and Materials 66-68 (July 2011): 189–93. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.189.

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A transient analysis mathematic model was established via ANSYS. The variation laws of magnetic induction density, induced eddy current and electromagnetic force in molten steel changing with the high frequency sine exciting current were investigated. The results indicate that the magnetic induction density and induced eddy current in molten steel vary at the same frequency as exciting current. Moreover, the variations of magnetic induction density and induced eddy current are not in step with exciting current. This proves that the high frequency electromagnetic field in mold and steel is not a time-harmonic wave. The electromagnetic force varies at the double frequency of the exciting current. When the exciting current reaches the amplitude value, the electromagnetic force is close to the max value, whereas when the exciting current returns to zero, the electromagnetic force is not zero. At the same time, there is partial electromagnetic force reversing its direction. If the reversed electromagnetic force is expanded seriously, the fluctuation of liquid level is induced, so it must be controlled.

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25

Qi, Jian Zhao, and Jun Guo. "The Electromagnetic Environmental Impact of High-Voltage Transmission Line and its Prevention Methods." Advanced Materials Research 726-731 (August 2013): 4013–16. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.4013.

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This paper calculates frequency electric field intensity by the equivalent charge method, and analyzes the main factors affecting the electromagnetic environment of the 500kV Double Circuit Transmission Lines. In the same electromagnetic transmission line calculation parameters, optimization of phase sequence can effectively reduce the frequency electric field intensity; with the increase of the distance, the line frequency electric field intensity significantly reduces away from the center line within 25m. Finally, the paper obtains the phase sequence arrangement with minimal impact on the electromagnetic environment and the minimum ground clearance meeting the environmental requirements.

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26

Lutsenko, Yu Yu, V. A. Vlasov, and E. P. Zelenetskaya. "Amplitude—frequency characteristics of an electromagnetic field in the high-frequency torch discharge." Technical Physics 55, no. 6 (June 2010): 880–82. http://dx.doi.org/10.1134/s1063784210060241.

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27

Wang, Xingjuan, Hebin Jin, Liguang Zhu, Ran Liu, and Tushun Song. "Effect of high-frequency electromagnetic field on microstructure of mold flux." High Temperature Materials and Processes 39, no. 1 (August 7, 2020): 368–76. http://dx.doi.org/10.1515/htmp-2020-0037.

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AbstractSoft-contact of molten steel can be achieved by applying a high-frequency electromagnetic field above the mold of continuous casting, which can effectively eliminate surface defects and achieve billets with no cracks and no oscillation marks. It also has some influence on the mold flux. In this study, the effect of a high-frequency electromagnetic field (20 kHz) on a mold flux flow field was simulated using a finite element software, and the slag film was extracted using a slag film simulator. The effect of the high-frequency magnetic field on the microstructure of the mold flux was analyzed using X-ray diffraction, Raman spectroscopy, and mineral phase testing. The results show that the high-frequency electromagnetic field disrupts the orderly movement and increases the movement rate of the liquid flux. The precipitate phase of the slag film did not change, but the silicate dimer Q1 decreased, the chain Q2 increased, and the network degree was increased. The slag film structure changed from the original two-layer form of crystalline layer–glass layer into a three-layer form of crystal layer–glass layer–crystal, and the crystallization ratio increased by 35% on average. The grain-size melilite granularity was reduced from the original 0.12 to 0.005 mm.

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28

Glasmachers, A. "Active miniature radio frequency field probe." Advances in Radio Science 1 (May 5, 2003): 161–64. http://dx.doi.org/10.5194/ars-1-161-2003.

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Abstract. For the measuring of the electromagnetic interference (e.g. on men) of RF fields produced by mobile communication equipment field probes are required with high spatial resolution and high sensitivity. Available passive probes show good results with respect to bandwidth and low field distortion, but do not provide the required sensitivity and dynamic range. A significant limitation for active miniature probes is the power supply problem, because batteries cannot be used. Therefore the effect of high impedance connection lines is examined by a numerical field simulation. Different approaches for the design of an active probe are discussed, a favourable solution with a logarithmic demodulator is implemented and measuring results are presented.

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29

Zhao, Yan, Lixin Zhang, Xin Zhao, Jin Liu, and Ming Gao. "Research on Descaling Characteristics and Simulation Calculation of a Coaxial High-Frequency Electronic Descaling Device." Water 13, no. 6 (March 14, 2021): 789. http://dx.doi.org/10.3390/w13060789.

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High-frequency electronic descaling devices are physical water treatment methods that use a high-frequency electromagnetic field to prevent and remove scale. The effectiveness of the method is verified by monitoring the growth of scale on the surface of heat exchange tubes. The microstructure of scale obtained from experiments is analyzed by scanning electron microscope (SEM), and the action characteristics of high-frequency electromagnetic fields on water are explored by observing the change of solution contact angle at different times. The experimental results show that the high-frequency electromagnetic field can slow down the scaling growth on the surface of heat exchange tubes by changing the morphology of scaling substances and the physicochemical properties of water. The cavity of the instrument is modeled and simulated by ANSYS Maxwell, and the three operating parameters, waveform, voltage and frequency, are changed respectively. The performance parameters of the cavity, such as magnetic field energy, electric field energy and magnetic flux, are calculated and compared, and then the more suitable operating parameters are selected to improve the performance of the instrument. The simulation results show that the high-frequency electromagnetic field generated by the anode rod in the axial position can be overlooked compared with the magnetic field energy. Square wave excitation produces greater magnetic field energy than using sine wave excitation, and as the voltage increases, the peak value of the magnetic field energy continues to rise and increases faster. With an increase in the frequency, the peak value of the magnetic field energy and magnetic flux peak will maintain a slight decrease over a certain frequency range. After this frequency range, the peak value of magnetic field energy and magnetic flux peak will decrease rapidly. This decrease is due to the relaxation caused by the change of the waveform direction. The influence of time and an increase in the frequency will significantly increase the influence of the relaxation time.

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30

Ren, Zhongming, Huafeng Dong, Kang Deng, and Guochang Jiang. "Influence of High Frequency Electromagnetic Field on the Initial Solidification during Electromagnetic Continuous Casting." ISIJ International 41, no. 9 (2001): 981–85. http://dx.doi.org/10.2355/isijinternational.41.981.

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31

Huang, Lei, Huang Xin Cheng, and Mei Wang. "Study on Selection Method of Analogy Line in High Voltage Transmission Project Environmental Impact Assessment." Applied Mechanics and Materials 209-211 (October 2012): 1126–30. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1126.

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This article integrate the theoretical calculation of the power-frequency electromagnetic field intensity and radio interference intensity under transmission line, and analyze the factor which influence the value and distribution of the electromagnetic field, radio interference under transmission line, aiming to provide basis and reference for other environmental assessment of electromagnetism. The study shows that a reasonable selection of analog lines can get an accurate result as the theoretical calculation. Important factors of analog lines selection including: grade of voltage, current, height of line, location order of line, number of circuit, section area of line, number of bundle conductors.

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32

Bürgi, Alfred, Gaston Theis, Andreas Siegenthaler, and Martin Röösli. "Exposure modeling of high-frequency electromagnetic fields." Journal of Exposure Science & Environmental Epidemiology 18, no. 2 (April 4, 2007): 183–91. http://dx.doi.org/10.1038/sj.jes.7500575.

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33

Vian, Alain, Eric Davies, Michel Gendraud, and Pierre Bonnet. "Plant Responses to High Frequency Electromagnetic Fields." BioMed Research International 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/1830262.

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High frequency nonionizing electromagnetic fields (HF-EMF) that are increasingly present in the environment constitute a genuine environmental stimulus able to evoke specific responses in plants that share many similarities with those observed after a stressful treatment. Plants constitute an outstanding model to study such interactions since their architecture (high surface area to volume ratio) optimizes their interaction with the environment. In the present review, after identifying the main exposure devices (transverse and gigahertz electromagnetic cells, wave guide, and mode stirred reverberating chamber) and general physics laws that govern EMF interactions with plants, we illustrate some of the observed responses after exposure to HF-EMF at the cellular, molecular, and whole plant scale. Indeed, numerous metabolic activities (reactive oxygen species metabolism,α- andβ-amylase, Krebs cycle, pentose phosphate pathway, chlorophyll content, terpene emission, etc.) are modified, gene expression altered (calmodulin, calcium-dependent protein kinase, and proteinase inhibitor), and growth reduced (stem elongation and dry weight) after low power (i.e., nonthermal) HF-EMF exposure. These changes occur not only in the tissues directly exposed but also systemically in distant tissues. While the long-term impact of these metabolic changes remains largely unknown, we propose to consider nonionizing HF-EMF radiation as a noninjurious, genuine environmental factor that readily evokes changes in plant metabolism.

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34

Skotte, JH. "Exposure to high-frequency transient electromagnetic fields." Scandinavian Journal of Work, Environment & Health 22, no. 1 (February 1996): 39–44. http://dx.doi.org/10.5271/sjweh.107.

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35

Pustovoit, V., V. Gladyshev, V. Kauts, A. Morozov, P. Nikolaev, I. Fomin, E. Sharandin, and A. Kayutenko. "High frequency gravitational waves: generation, detection." Journal of Physics: Conference Series 2081, no. 1 (November 1, 2021): 012009. http://dx.doi.org/10.1088/1742-6596/2081/1/012009.

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Abstract We consider the different approaches to the generation and detection of the high-frequency gravitational waves. The estimations of the amplitude of gravitational waves generated by these methods were made. The characteristics of the high-frequency gravitational waves induced by perturbations of matter and the electromagnetic field are compared. The possibility of the direct detection of gravitational waves on the basis of the different methods was considered as well.

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36

Lee, Jang Hyun, Kyung Ho Lee, and Jong Sung Yun. "An Electromagnetic and Thermo-Mechanical Analysis of High Frequency Induction Heating for Steel Plate Bending." Key Engineering Materials 326-328 (December 2006): 1283–86. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1283.

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Eddy currents of electromagnetic field leads not only to the local heating of plate but also to the thermal-elasto-plastic deformation in the induction heating. It is necessary to have a simulation model to attract the possibility of induction heating equipment and to study the deformation behavior. The goal of present paper is to investigate the possibility of induction heating equipment for steel plate bending. The residual stress distribution of induction heating is investigated by an electromagnetic analysis in conjunction with thermal-mechanical analysis. A computational model based on FEA is used to study the electromagnetic field and thermalmechanical process. Comparison with the residual strain fields and deformation of both heating shows that the induction heating has good similarity with the gas heating.

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37

Hryshchenko, V. O. "Modeling and calculation power saving modes grain drying materials under energy fields." Naukovij žurnal «Tehnìka ta energetika» 11, no. 3 (November 18, 2020): 23–29. http://dx.doi.org/10.31548/machenergy2020.03.023.

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Storing grain quality materials in post harvest handling and storage is largely dependent on correctly implemented the drying process. In agricultural production mainly use costly convection dryer. The main share of wasteful energy consumption accounts for heat drying agent, some heat is lost to the environment through the working surface of the dryers and spent coolant. Ways to reduce these energy costs is to reduce the amount of drying agent in the process to the level necessary to absorb and remove moisture from the dryer and the working volume of the principles of targeted "delivery" of energy to vysushuyemoho material. Last principles successfully implemented using contactless energy supply of electromagnetic fields in a material exposure by microwave or infrared radiation. The article deals with the theoretical background processes of drying material in cyclic mode with infrared heating and high frequency electromagnetic field. The equations change over time settings grain material by heating using high frequency electromagnetic field or infrared light and ventilation in the grain does not allow heated air drying cycle count process. The algorithm calculating the overall process of drying cycle to determine rational modes of the process, providing minimize energy costs. The article deals with the theoretical background processes of drying material in cyclic mode with infrared heating and high frequency electromagnetic field. The equations change over time settings grain material by heating using high frequency electromagnetic field or infrared light and ventilation in the grain does not allow heated air drying cycle count process. The algorithm calculating the overall process of drying cycle to determine rational modes of the process, providing minimize energy costs. The article deals with the theoretical background processes of drying material in cyclic mode with infrared heating and high frequency electromagnetic field. The equations change over time settings grain material by heating using high frequency electromagnetic field or infrared light and ventilation in the grain does not allow heated air drying cycle count process. The algorithm calculating the overall process of drying cycle to determine rational modes of the process, providing minimize energy costs. The equations change over time settings grain material by heating using high frequency electromagnetic field or infrared light and ventilation in the grain does not allow heated air drying cycle count process. The algorithm calculating the overall process of drying cycle to determine rational modes of the process, providing minimize energy costs. The equations change over time settings grain material by heating using high frequency electromagnetic field or infrared light and ventilation in the grain does not allow heated air drying cycle count process. The algorithm calculating the overall process of drying cycle to determine rational modes of the process, providing minimize energy costs.

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38

Shipunov, Boris Pavlovich, and Andrey Valerievich Ryabykh. "EFFECT OF HIGH-FREQUENCY ELECTROMAGNETIC FIELD ON THE MUTAROTATION OF AQUEOUS SOLU-TIONS OF GLUCOSE AND FRUCTOSE." chemistry of plant raw material, no. 3 (May 15, 2019): 235–40. http://dx.doi.org/10.14258/jcprm.2019034456.

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The indirect influence of the high-frequency electromagnetic field of the 30–200 MHz low power range on the reaction rate of the mutation of D-glucose solutions and on the equilibrium in D-fructose and D-glucose solutions was studied. Solutions were prepared using both deionized water and water exposed to a high-frequency electromagnetic field. Control of the process of mutarotation was carried out polarimetrically. To assess the effectiveness of field exposure, the effective constants of the reaction rate of mutarotation were calculated. It has been established that the rate of mutarotation of D-glucose solutions non-linearly decreases with increasing frequency of the electromagnetic field. The effect of pretreatment of the solvent by an electromagnetic field on the equilibrium in solutions of fructose and glucose, which have been subjected to field exposure, has been studied. The observation was carried out for 30 days. It was found that the equilibrium specific rotation in the fructose solution as a result of the influence of the electromagnetic field shifts towards negative values, and in the case of glucose solution it does not change. An explanation of the results obtained is proposed, which is based on the assumption of a change in the structural organization of the solvent - water as a result of the high-frequency electromagnetic field, which can significantly change the hydration interactions of the reaction participants: carbohydrates and hydrogen ions.

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39

Lee, Nara, Jinju Kim, Yebin Choi, and Yongheum Lee. "Development of Temperature-Controllable Acupuncture System using High-Frequency Electromagnetic Field." Acupuncture & Electro-Therapeutics Research 42, no. 3 (July 1, 2017): 175–83. http://dx.doi.org/10.3727/036012917x15118029263184.

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Barcal, Jan, Lukas Visek, Frantisek Vozeh, Jan Vrba, and Vaclav Zalud. "Brain functions after high-frequency electromagnetic field exposure: Indirect SAR measurement." Neuroscience Letters 500 (July 2011): e47. http://dx.doi.org/10.1016/j.neulet.2011.05.205.

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Tan Kang-Bo and Liang Chang-Hong. "Electromagnetic field boundary conditions on moving interfaces in high frequency case." Acta Physica Sinica 58, no. 10 (2009): 6770. http://dx.doi.org/10.7498/aps.58.6770.

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Kalitzova, M., E. Vlakhov, Y. Marinov, K. Gesheva, V. Ignatova, O. Lebedev, C. Muntele, and R. Gijbels. "Effect of high-frequency electromagnetic field on Te+- implanted (001) Si." Vacuum 76, no. 2-3 (November 2004): 325–28. http://dx.doi.org/10.1016/j.vacuum.2004.07.055.

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Borbély, Alexander A., Reto Huber, Thomas Graf, Barbara Fuchs, Eva Gallmann, and Peter Achermann. "Pulsed high-frequency electromagnetic field affects human sleep and sleep electroencephalogram." Neuroscience Letters 275, no. 3 (November 1999): 207–10. http://dx.doi.org/10.1016/s0304-3940(99)00770-3.

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Kravtsov, V. E., and V. I. Yudson. "Direct current in mesoscopic rings induced by high-frequency electromagnetic field." Physical Review Letters 70, no. 2 (January 11, 1993): 210–13. http://dx.doi.org/10.1103/physrevlett.70.210.

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Li, Jin, Lu Zhang, Kai Lin, and Hao Wen. "Resonance of Gaussian Electromagnetic Field to the High Frequency Gravitational Waves." International Journal of Theoretical Physics 55, no. 8 (April 2, 2016): 3506–14. http://dx.doi.org/10.1007/s10773-016-2977-z.

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Fatykhov, M. A., and R. I. Idrisov. "Degassing of a hydrocarbon fluid in a high-frequency electromagnetic field." Journal of Engineering Physics and Thermophysics 80, no. 3 (May 2007): 630–33. http://dx.doi.org/10.1007/s10891-007-0083-z.

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Kolcunová, I., M. Pavlík, L' Beňa, Z. Čonka, S. Ilenin, M. Kanálik, M. Kolcun, A. Mészáros, D. Medveď, and J. Zbojovský. "Influence of Electromagnetic Shield on the High Frequency Electromagnetic Field Penetration through the Building Material." Acta Physica Polonica A 131, no. 4 (April 2017): 1135–37. http://dx.doi.org/10.12693/aphyspola.131.1135.

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Weyssow, B., and R. Balescu. "Hamiltonian theory of the generalized oscillation-centre transformation." Journal of Plasma Physics 39, no. 1 (February 1988): 81–102. http://dx.doi.org/10.1017/s0022377800012873.

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Abstract:

The theory of the slow reaction of a charged particle in the combined presence of a strong quasi-static magnetic field and a high-frequency electromagnetic field (generalized oscillation-centre motion) is constructed by using a Hamiltonian formalism with non-canonical variables and pseudo-canonical transformations. The theory combines the features studied in our previous works for the case in which only one of the previously mentioned fields is present. The new averaging transformation is based on the fact that the Larmor frequency of the quasi-static field is of the same order as the external frequency of the high-frequency field. Our theory is manifestly gauge-invariant and involves only physical quantities (particle velocity and electromagnetic fields). Explicit expressions for the drift velocity of the oscillation centre and for the ponderomotive force are derived.

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Mao, Kai, Jin Gang Wang, Xu Dong Deng, Wei He, and Zuo Peng Zhang. "The Experimental Study on the Influence of Human Body to Measurement of High Voltage Power Frequency Electric Field." Applied Mechanics and Materials 303-306 (February 2013): 482–88. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.482.

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Abstract:

Based on the basic theory of electromagnetic field, the Electric Field Distortion (EFD) in power frequency electric field caused by induced current of human body has been analyzed. The enhancement factor of the electric field distortion is introduced to reduce the influences caused by human body in the measurement of high voltage electric fields. The Ansoft Maxwell is used to simulate and calculate the electric field distribution under the influence of the human body to have the value of enhancement factor. In addition, the enhancement factor has been corrected by experiment with the electromagnetic field analyzer EFA300. With the enhancement factor introduced in this paper, the measurement error can be reduced.

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Gong, Ming, Shou-Guang Sun, Lin Sun, Ai-Qin Tian, and Qiang Li. "Simulation and experimentation of wide frequency electromagnetic shielding coating used for carbon fiber composite materials of track vehicles." International Journal of Modern Physics B 33, no. 01n03 (January 30, 2019): 1940020. http://dx.doi.org/10.1142/s0217979219400204.

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Abstract:

Computer Simulation Technology EM and Computer Simulation Technology Microwave Studio electromagnetic simulation software were used to simulate the carbon fiber composite materials with a new type of wide frequency electromagnetic shielding coating. DC magnetic field, low-frequency electromagnetic fields, and mid-high frequency electromagnetic shielding effectiveness analysis model were established in order to study the influence of permeability, conductivity, coating thickness and other parameters in the typical frequency range research on the shielding effectiveness. The results show that the composite coating material with reasonable design can effectively enhance the electromagnetic shielding performance of carbon fiber composite materials in the DC [Formula: see text]18 GHz frequency range.

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