Academic literature on the topic 'Low-energy radio wave radiation'

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Journal articles on the topic "Low-energy radio wave radiation"

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Kosulina, N., and S. Kosulin. "APPLICATION OF LOW-ENERGY RADIO-WAVE EMISSIONS IN MEDICINE AND ANIMAL HUSBANDRY." Scientific heritage, no. 99 (October 21, 2022): 22–25. https://doi.org/10.5281/zenodo.7234435.

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Beloborodov, Andrei M. "Can a Strong Radio Burst Escape the Magnetosphere of a Magnetar?" Astrophysical Journal Letters 922, no. 1 (2021): L7. http://dx.doi.org/10.3847/2041-8213/ac2fa0.

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Abstract We examine the possibility that fast radio bursts (FRBs) are emitted inside the magnetosphere of a magnetar. On its way out, the radio wave must interact with a low-density e ± plasma in the outer magnetosphere at radii R = 109–1010 cm. In this region, the magnetospheric particles have a huge cross section for scattering the wave. As a result, the wave strongly interacts with the magnetosphere and compresses it, depositing the FRB energy into the compressed field and the scattered radiation. The scattered spectrum extends to the γ-ray band and triggers e ± avalanche, further boosting
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Golbraikh, Ephim, and Yuri Lyubarsky. "On the Escape of Low-frequency Waves from Magnetospheres of Neutron Stars." Astrophysical Journal 957, no. 2 (2023): 102. http://dx.doi.org/10.3847/1538-4357/acfa78.

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Abstract We study the nonlinear decay of the fast magnetosonic (fms) into the Alfvén waves in relativistic force-free magnetohydrodynamics. The work has been motivated by models of pulsar radio emission and fast radio bursts (FRBs), in which the emission is generated in neutron star magnetospheres at conditions when not only the Larmor but also the plasma frequencies significantly exceed the radiation frequency. The decay process places limits on the source luminosity in these models. We estimated the decay rate and showed that the phase volume of Alfvén waves available for the decay of an fms
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Lamablawa, Florianus, and Sovian Aritonang. "KARAKTERISTIK LITHIUM-POLYMER BATTERY UNTUK APLIKASI RADIO YANG DI GUNAKAN PERSONIL TNI DALAM MENDUKUNG IKN LITERATURE REVIEW." Citizen : Jurnal Ilmiah Multidisiplin Indonesia 2, no. 4 (2022): 592–602. http://dx.doi.org/10.53866/jimi.v2i4.162.

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A battery is an electrochemical cell that converts chemical energy into electrical energy. Lithium Polymer (Li-Po) Batteries are Almost the same as Li-Ion batteries, but Li-Po batteries do not use the liquid as an electrolyte but instead a dry polymer electrolyte shaped like a thin film of plastic. This film layer is arranged in layers between the anode and cathode, resulting in ion exchange. Radio is electromagnetic signal radiation that propagates through the atmosphere and a vacuum. The wave components modulate information sent via electromagnetic waves, namely amplitude, frequency, phase,
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Guo, L., H. W. Zhang, and H. C. Wu. "High-frequency radio-wave emission by coherent transition radiation of runaway electrons produced by lightning stepped leaders." Physics of Plasmas 29, no. 9 (2022): 093102. http://dx.doi.org/10.1063/5.0102132.

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Lightning can produce multiband radio waves and high-energy radiations. Some of them are associated with the formation of lightning leaders. However, their generation mechanisms are not fully understood yet. Based on the understanding of thermal runaway electrons generated at the leader tip, we propose transition radiation of these runaway electrons as an alternative mechanism for producing very-high-frequency radio signals. Transition radiations are induced when runaway electrons cross the interfaces between lightning coronas and the air. By the use of estimated parameters of electron beams e
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Lamy, L., P. Zarka, B. Cecconi, et al. "The low-frequency source of Saturn’s kilometric radiation." Science 362, no. 6410 (2018): eaat2027. http://dx.doi.org/10.1126/science.aat2027.

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Understanding how auroral radio emissions are produced by magnetized bodies requires in situ measurements within their source region. Saturn’s kilometric radiation (SKR) has been widely used as a remote proxy of Saturn’s magnetosphere. We present wave and plasma measurements from the Cassini spacecraft during its ring-grazing high-inclination orbits, which passed three times through the high-altitude SKR emission region. Northern dawn-side, narrow-banded radio sources were encountered at frequencies of 10 to 20 kilohertz, within regions of upward currents mapping to the ultraviolet auroral ova
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Kozelkov, Serhii, Oleksandr Shulha, Oleksandr Shefer, and Dmytro Neliuba. "Further development of satellite telecommunications radio signals noise immunity increasing method." International Journal of Engineering & Technology 7, no. 4.8 (2018): 17–21. http://dx.doi.org/10.14419/ijet.v7i4.8.27207.

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The problem of radio communication loss during spacecraft passage at hyperspeed through dense layers of atmosphere at heights of 60-120 km as result of plasma ionization shock wave formation is analyzed. As a result, this part of spacecraft trajectory is the most problematic from navigation and control point of view. A part of this unsolved problem is identified and an innovative method for solving it is proposed – a method of resonant radio signal regeneration developed, which based on interaction of outer ionized layer elementary particles with artificially generated high intensity negativ
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Hwang, Ji-Gwang, Michael Abo-Bakr, Aleksandr Matveenko, Georgios Kourkafas, and Thorsten Kamps. "Radiation Generation with an Existing Demonstrator of an Energy-Recovery Continuous-Wave Superconducting RF Accelerator." Journal of the Korean Physical Society 77, no. 5 (2020): 337–43. http://dx.doi.org/10.3938/jkps.77.337.

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Abstract Over the past decades, many accelerator laboratories have put much effort into the development of compact energy-recovery linac (ERL) demonstrators to verify various physical and technical aspects of the generation, acceleration, transport and energy recovery of high brightness and high average current electron beams in a superconducting radio-frequency (SRF) linear accelerator. Beyond these goals, the ERL demonstrator also offers unique opportunities to study novel schemes for THz and X-ray radiation generation. In this paper, we discuss feasible options for schemes generating THz an
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Machabeli, George Z. "The Mechanisms for the Generation of Pulsar Radio and High-energy Emission." Publications of the Astronomical Society of Australia 18, no. 4 (2001): 394–99. http://dx.doi.org/10.1071/as01045.

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AbstractThe recent theory of propagation and generation of waves in a pulsar’s magnetosphere is discussed. In particular we consider models of pulsar radio emission due to plasma instabilities. Wave–particle interactions can lead to quasilinear diffusion increasing a particle’s pitch-angle. The recent model of γ-ray emission from synchrotron radiation as a result of quasilinear diffusion is discussed.
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Kumar, Pawan, and Željka Bošnjak. "FRB coherent emission from decay of Alfvén waves." Monthly Notices of the Royal Astronomical Society 494, no. 2 (2020): 2385–95. http://dx.doi.org/10.1093/mnras/staa774.

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ABSTRACT We present a model for fast radio bursts (FRBs) where a large-amplitude Alfvén wave packet is launched by a disturbance near the surface of a magnetar, and a substantial fraction of the wave energy is converted to coherent radio waves at a distance of a few tens of neutron star radii. The wave amplitude at the magnetar surface should be about 1011 G in order to produce an FRB of isotropic luminosity 1044 erg s−1. An electric current along the static magnetic field is required by Alfvén waves with non-zero component of transverse wave vector. The current is supplied by counter-streamin
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Dissertations / Theses on the topic "Low-energy radio wave radiation"

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Cui, Huajian. "Extraction of input parameters for the theory of radiative energy transfer using deconvolution." Thesis, University of South Wales, 2009. https://pure.southwales.ac.uk/en/studentthesis/extraction-of-input-parameters-for-the-theory-of-radiative-energy-transfer-using-deconvolution(4eb05b79-5ef1-4a06-8cba-471d9fb82431).html.

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The ever growing application of wireless communication systems requires accurate models for characterising radiowave propagation when affected by the presence of a variety of obstacles. In particular if the obstacles take the shape of vegetation volumes, like single trees or groups of trees and are present in the radio path, they give rise to absorption and scattering of radio signals. This thesis presents a literature review of common models for radiowave propagation through vegetation, the theory of Radiative Energy Transfer (RET) is one of these models and provides an accurate analysis of r
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WOJACZYNSKI, RAFAL PAWEL. "High Energy Radiation From Low-luminosity Accreting Black Holes." Doctoral thesis, Università degli Studi di Trieste, 2018. http://hdl.handle.net/11368/2948714.

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This PhD thesis includes theoretical and observational studies of gamma-ray emission from radio-quiet accreting black holes. The theoretical motivation for the search of gamma-ray emission from such sources concerns the considerable hadronic production of gamma-rays predicted by models of hot flows, which most likely power these sources at low luminosities. I thoroughly investigated this model prediction and I found that the luminosity at either hundreds of MeV or in the GeV range, depending on proton distribution, can reach ~10-5 LEdd for the X-ray luminosities between ~10-4LEdd and 10-3LEdd
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Inanlou, Farzad Michael-David. "Innovative transceiver approaches for low-power near-field and far-field applications." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52245.

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Wireless operation, near-field or far-field, is a core functionality of any mobile or autonomous system. These systems are battery operated or most often utilize energy scavenging as a means of power generation. Limited access to power, expected long and uninterrupted operation, and constrained physical parameters (e.g. weight and size), which limit overall power harvesting capabilities, are factors that outline the importance for innovative low-power approaches and designs in advanced low-power wireless applications. Low-power approaches become especially important for the wireless transceive
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Kamanzi, Janvier. "Development of a low energy cooling technology for a mobile satellite ground station." Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1072.

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Thesis submitted in fulfillment of the requirements for the degree Master of Technology:Electrical Engineering in the Faculty ofEngineering at the Cape Peninsula University of Technology Supervisor:Prof MTE KAHN Bellville December 2013<br>The work presented in this thesis consists of the simulation of a cooling plant for a future mobile satellite ground station in order to minimize the effects of the thermal noise and to maintain comfort temperatures onboard the same station. Thermal problems encountered in mobile satellite ground stations are a source of poor quality signals and also of the p
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Hee, Sonke. "Computational Bayesian techniques applied to cosmology." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/273346.

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This thesis presents work around 3 themes: dark energy, gravitational waves and Bayesian inference. Both dark energy and gravitational wave physics are not yet well constrained. They present interesting challenges for Bayesian inference, which attempts to quantify our knowledge of the universe given our astrophysical data. A dark energy equation of state reconstruction analysis finds that the data favours the vacuum dark energy equation of state $w {=} -1$ model. Deviations from vacuum dark energy are shown to favour the super-negative ‘phantom’ dark energy regime of $w {< } -1$, but at low st
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Giesen, Gaelle. "Dark Matter Indirect Detection with charged cosmic rays." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112160/document.

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Les preuves pour l'existence de la matière noire (MN), sous forme d'une particule inconnue qui rempli les halos galactiques, sont issues d'observations astrophysiques et cosmologiques: son effet gravitationnel est visible dans les rotations des galaxies, des amas de galaxies et dans la formation des grandes structures de l'univers. Une manifestation non-gravitationnelle de sa présence n'a pas encore été découverte. L'une des techniques les plus prometteuse est la détection indirecte de la MN, consistant à identifier des excès dans les flux de rayons cosmiques pouvant provenir de l'annihilation
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Kowalczuk, C., G. Yarwood, R. Blackwell, et al. "Absence of nonlinear responses in cells and tissues exposed to RF energy at mobile phone frequencies using a doubly resonant cavity." 2010. http://hdl.handle.net/10454/6058.

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A doubly resonant cavity was used to search for nonlinear radiofrequency (RF) energy conversion in a range of biological preparations, thereby testing the hypothesis that living tissue can demodulate RF carriers and generate baseband signals. The samples comprised high-density cell suspensions (human lymphocytes and mouse bone marrow cells); adherent cells (IMR-32 human neuroblastoma, G361 human melanoma, HF-19 human fibroblasts, N2a murine neuroblastoma (differentiated and non-differentiated) and Chinese hamster ovary (CHO) cells) and thin sections or slices of mouse tissues (brain, kidney, m
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Books on the topic "Low-energy radio wave radiation"

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Protasevich, E. T. Novye i︠a︡vlenii︠a︡ v fizike gazovogo razri︠a︡da i radiofizike. Izd-vo Tomsk. politekhn. universiteta, 2002.

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University, Tomsk Polytechnic, ed. Novye i︠a︡vlenii︠a︡ v fizike gazovogo razri︠a︡da i radiofizike. Izd-vo Tomsk. politekhn. universiteta, 2002.

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Carlo, George Louis. Cell phones: Invisible hazards in the wireless age : an insider's alarming discoveries about cancer and genetic damage. Carroll & Graf Publishers, Inc., 2001.

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Office, General Accounting. Telecommunications: Status of research on the safety of cellular telephones : report to the Chairman, Subcommittee on Telecommunications and Finance, Committee on Energy and Commerce, House of Representatives. The Office, 1994.

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Office, General Accounting. Telecommunications: Follow-up national survey of cable television rates and services : report to the chairman, Subcommittee on Telecommunications and Finance, Committee on Energy and Commerce, House of Representatives. U.S. General Accounting Office, 1990.

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Office, General Accounting. Telecommunications: Additional federal efforts could help advance digital television transition : report to the ranking minority member, Subcommittee on Telecommunications and the Internet, Committee on Energy and Commerce, House of Representatives. General Accounting Office (441 G St. NW, Room LM, Washington, 20548), 2002.

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Office, General Accounting. Telecommunications: Many broadcasters will not meet May 2002 digital television deadline : report to the Ranking Minority Member, Subcommittee on Telecommunications and the Internet, Committee on Energy and Commerce, House of Representatives. The Office, 2002.

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Office, General Accounting. Telecommunications: Federal and state universal service programs and challenges to funding : report to the ranking minority member, Subcommittee on Telecommunications and the Internet, Committee on Energy and Commerce, House of Representatives. GAO, 2002.

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Board on Radiation Effects Research, Committee to Assess Potential Health Effects from Exposures to PAVE PAWS Low-Level Phased-Array Radiofrequency Energy, Division on Earth and Life Studies, and National Research Council. Assessment of Potential Health Effects from Exposure to PAVE PAWS Low-Level Phased-Array Radiofrequency Energy. National Academies Press, 2005.

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Board on Radiation Effects Research, Committee to Assess Potential Health Effects from Exposures to PAVE PAWS Low-Level Phased-Array Radiofrequency Energy, Division on Earth and Life Studies, and National Research Council. Assessment of Potential Health Effects from Exposure to PAVE PAWS Low-Level Phased-Array Radiofrequency Energy. National Academies Press, 2005.

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Book chapters on the topic "Low-energy radio wave radiation"

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Kocharyan, Gevorg G., Alexey A. Ostapchuk, and Dmitry V. Pavlov. "Fault Sliding Modes—Governing, Evolution and Transformation." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_15.

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AbstractA brief summary of fundamental results obtained in the IDG RAS on the mechanics of sliding along faults and fractures is presented. Conditions of emergence of different sliding regimes, and regularities of their evolution were investigated in the laboratory, as well as in numerical and field experiments. All possible sliding regimes were realized in the laboratory, from creep to dynamic failure. Experiments on triggering the contact zone have demonstrated that even a weak external disturbance can cause failure of a “prepared” contact. It was experimentally proven that even small variations of the percentage of materials exhibiting velocity strengthening and velocity weakening in the fault principal slip zone may result in a significant variation of the share of seismic energy radiated during a fault slip event. The obtained results lead to the conclusion that the radiation efficiency of an earthquake and the fault slip mode are governed by the ratio of two parameters—the rate of decrease of resistance to shear along the fault and the shear stiffness of the enclosing massif. The ideas developed were used to determine the principal possibility to artificially transform the slidding regime of a section of a fault into a slow deformation mode with a low share of seismic wave radiation.
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Kamal Hossain, Md, and Mohammad R. Haider. "Electromagnetic Fields and Radiation." In An Introduction to Non-Ionizing Radiation. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136890123010007.

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Electromagnetic radiation is a form of energy that comprises electric and magnetic waves. It propagates in free space and contains neither mass nor charge but carries energy as a photon packet. The energy associated with electromagnetic radiation is directly proportional to the frequency from extremely low frequencies to visible light and above. The highly low-frequency electromagnetic field is generated by the electrical devices and power systems, while the radio and microwave signal radiates by the mobile tower, microwave oven, heater, radar, etc. The extremely high-frequency radiation emitted from medical devices, radioactive decay, nuclear weapons, etc. Therefore, environmental exposure to electromagnetic radiation increases gradually due to increasing electricity demands, advanced technologies, mobile communications, etc. However, exposure to electromagnetic radiation has an adverse biological effect depending on the current intensity, strength of the magnetic field, and duration of exposure. This book chapter introduces electrostatics and magneto-statics, the formation of electromagnetic fields and waves, frequency spectrum, source of radiations, and their exposure limits.
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Wigle, Donald T. "Radiation." In Child Health and the Environment. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195135596.003.0009.

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Abstract The electromagnetic spectrum ranges from ionizing radiation through ultraviolet light, visible light, infrared light, microwaves, and radio waves (Figure 9–1). Ionizing radiation comprises very short wavelength/high frequency electromagnetic waves and particles with sufficient energy to remove electrons from atoms or molecules, thereby creating ions. At the other extreme, transmission and use of electricity that cycles 50 or 60 times per second (i.e., 50 or 60 Hz) produces distinct electric and magnetic waves in the extremely long wavelength/low frequency range of the electromagnetic spectrum. The known and potential health effects of electromagnetic radiation vary markedly by wavelength/frequency. Prenatal and early childhood high-level ionizing radiation exposure can cause severe neurotoxicity and delayed effects including cancer; such effects arise from the ability of ionizing radiation to damage DNA. Intense childhood sun exposure, especially among genetically susceptible subgroups (e.g., fair-skinned Caucasians), is a major cause of malignant melanoma of skin; although UV light is less energetic than ionizing radiation, it causes photochemical and oxidative DNA damage. There is some evidence (albeit inconsistent) of an association between childhood exposure to relatively high-level powerfrequency magnetic fields and childhood acute lymphoblastic leukemia.
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Lippmann, Morton, Beverly S. Cohen, and Richard B. Schlesinger. "Nonionizing Electromagnetic Radiation." In Environmental Health Science. Oxford University PressNew York, NY, 2003. http://dx.doi.org/10.1093/oso/9780195083743.003.0010.

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Abstract Electromagnetic radiation is emitted from sources in space and from anthropogenic sources on earth. It travels at a constant speed, i.e., the speed of light. The overall electromagnetic spectrum is illustrated in Figure 10–1. Energy is transmitted as a sinusoidal wave form, by time varying electric and magnetic fields. The transmission velocity, c, is described by the formula: The health effects of exposures to the various components of the electromagnetic spectrum vary greatly with frequency, and the discussion that follows outlines the sources, as well as the nature and extent of the effects that they produce. There are separate discussions on component bands within the overall spectrum, i.e., ionizing radiation, UV, visible, IR, and radio frequency (RF). The electric and magnetic fields induced by these radiations can also produce biological responses, and these responses will also be reviewed.
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Hendry, Aaron T., Mark A. Clilverd, Craig J. Rodger, and Mark J. Engebretson. "Ground-based very-low-frequency radio wave observations of energetic particle precipitation." In The Dynamic Loss of Earth's Radiation Belts. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-813371-2.00008-1.

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Oriakhi, Christopher O. "Structure of the Atom." In Chemistry in Quantitative Language. Oxford University Press, 2009. http://dx.doi.org/10.1093/oso/9780195367997.003.0014.

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The arrangement of electrons around the nucleus of an atom is known as its electronic structure. Since electrons determine all the chemical and most physical properties of an atomic system, it is important to understand the electronic structure. Much of our understanding has come from spectroscopy, the analysis of the light absorbed or emitted by a substance. Electromagnetic radiation is a form of energy; light is the most familiar type of electromagnetic radiation. But radio waves, microwaves, X-rays, and many other similar phenomena are also types of electromagnetic radiation. All these exhibit wavelike properties, and all travel through a vacuum at the speed of light. The wavelike propagation of electromagnetic radiation can be described by its frequency (ν), wavelength (λ), and speed (c). Wavelength (lambda, λ): The wavelength of a wave is the distance between two successive peaks or troughs. Frequency (nu, ν): The frequency of a wave is the number of waves (or cycles) that pass a given point in space in one second. The unit is expressed as the reciprocal of seconds (s−1) or as hertz (Hz). A hertz is one cycle per second (1 Hz = 1 s−1). Speed of light (c): The speed of light in a vacuum is one of the fundamental constants of nature, and does not vary with the wavelength. It has a numerical value of 2.9979 × 108 m/s, but for convenience we use 3.0 × 108 m/s. These measurements are related by the equation: Speed of light =Wavelength×Frequency c = λν This expression can be rearranged to give: λ = c/v, or ν = c/λ Wave number (⊽): The wave number is a characteristic of a wave that is proportional to energy. It is defined as the number of wavelengths per unit of length (usually in centimeter, cm).Wave number may be expressed as ⊽ =1/λ While electromagnetic radiation behaves like a wave, with characteristic frequency and wavelength, experiment has shown that electromagnetic radiation also behaves as a continuous stream of particles or energy packets.
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Michael Wu, Chung-Tse, and Pai-Yen Chen. "Low-Profile Metamaterial-Based Adaptative Beamforming Techniques." In Modern Printed-Circuit Antennas. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.90012.

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In this chapter, we will review recent research advances on beamforming and spatial multiplexing techniques using reconfigurable metamaterials (MTMs) and metasurfaces. This chapter starts by discussing basic principles and practical applications of transmission line-based metamaterials and planar metasurfaces, followed by their active versions that enable novel smart antennas with beam steering and beamshaping functions. We include detailed descriptions of their practical realizations and the integration with circuits and the radio-frequency (RF) frontend, which are used to adaptively and dynamically manipulate electromagnetic radiation. We summarize the state-of-the-art MTM/metasurface-based beamforming techniques and provide a critical comparison for their uses in the RF-to-millimeter-wave range in terms of cost, reconfigurability, system integratability and radiation properties. These techniques are expected to pave the way for the massive deployment of communication, radar, remote sensing and medical and security imaging systems.
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Dehra, Himanshu. "Developments in Wireless Power Transfer Using Solar Energy." In Wireless Power Transfer – Recent Development, Applications and New Perspectives. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97099.

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This chapter presents state-of-the-art and major developments in wireless power transfer using solar energy. The brief state-of-the-art is presented for solar photovoltaic technologies which can be combined with wireless power transfer (WPT) to interact with the ambient solar energy. The main purpose of the solar photovoltaic system is to distribute the collected electrical energy in various small-scale power applications wirelessly. These recent developments give technology based on how to transmit electrical power without any wires, with a small-scale by using solar energy. The power can also be transferred wirelessly through an inductive coupling as an antenna. With this wireless electricity we can charge and make wireless electricity as an input source to electronic equipment such as cellphone, MP3 Player etc. In harvesting energy, technologies of ambient solar radiation like solar photovoltaic, kinetic, thermal or electro-magnetic (EM) energy can be used to recharge the batteries. Radio frequency (RF) harvesting technologies are also popular as they are enormously available in the atmosphere. The energy converted to useful DC energy which can be used to charge electrical devices which need low power consumption. The chapter has also presented a parallel plate photovoltaic amplifier connected to a potentiometer as a Resistance-Capacitance (RC) circuit power amplifier. The effect of inductance and resulting power transfer has been theoretically determined in the RC amplifier circuit. The electrical and thermal properties and measurements from a parallel plate photovoltaic amplifier were collected to analyze the unbalanced power transfer and inductance in a nonlinear RC circuit amplifier using equivalent transfer functions. The concept of Wireless Information and Power Transfer using Electromagnetic and Radio Waves of Solar Energy Spectrum is also briefly outlined.
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Blackman, Carl F. "Calcium release from neural tissue: experimental results and possible mechanisms." In Interaction Mechanisms of Low-Level Electromagnetic Fields in Living Systems. Oxford University PressOxford, 1992. http://dx.doi.org/10.1093/oso/9780198577591.003.0006.

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Abstract The research discussed in this paper was first conceived following a report by Bawin et al. (1975) which demonstrated that amplitude-modulated radio¬ frequency (RF) fields could preferentially cause a biochemical· change in isolated brain tissue, depending on the specific frequency of modulation. They performed this experiment with isolated brain tissue to test whether modulated RF fields could interact with an animal via the central nervous system or whether the peripheral nervous system was needed. Our interest in this experiment was motivated by the observation that the results could not easily be explained by a mechanism that involved heating of the sample. We designed our experimental procedures in consultation with a professional statistician, Dennis House, who subsequently analysed the raw data in all our reports. After a year of work we were able to reproduce their findings (Blackman et al. 1979); however, some of our results were sufficiently unusual to merit additional experimentation to determine whether the phenomenon was an artefact of the preparation or procedures. By 1980, we were convinced that the positive results were based in a true response of the samples to RF radiation (Blackman et al. 1979, 1980a, b, 1981; Joines and Blackman 1980, 1981; Joines et al. 1980). Thus we initiated our experiments to establish the electromagnetic field parameters that were critical to induce the biological changes we had observed. To simplify the exposure situation and analysis, we elected to use the modulation frequency alone, without the RF carrier wave.
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Goldsmith, Mike. "6. Electromagnetic waves." In Waves: A Very Short Introduction. Oxford University Press, 2018. http://dx.doi.org/10.1093/actrade/9780198803782.003.0006.

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‘Electromagnetic waves’ considers the history of the scientific investigation into the electromagnetic spectrum, including Einstein’s insight into the quantized nature of electromagnetic radiation. It explains that the only difference between light, radio waves, and all the other forms of electromagnetic radiation is the length of the fictitious-but-convenient waves or, equivalently, the energy of the photons involved. These different energies lead to different mechanisms for the formation and absorption of the different kinds of radiation, and it is this which gives rise to their different behaviours. Radio waves, microwaves, infrared radiation, light, ultraviolet light, X-rays, and gamma rays are all discussed.
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Conference papers on the topic "Low-energy radio wave radiation"

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Estes, Nicholas J., Nicolas Garcia, and Jonathan Chisum. "A GRIN-Lens-Coupled Nonlinear Receiver for Ultra-Low-Energy Large-Area Millimeter-Wave Mobile Wireless Communications." In 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI). IEEE, 2024. http://dx.doi.org/10.1109/ap-s/inc-usnc-ursi52054.2024.10686582.

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Andreyev, Yuri V. "Energy Radiation Pattern of Ultra-Wideband Chaotic Ensemble." In 2019 Russian Open Conference on Radio Wave Propagation (RWP). IEEE, 2019. http://dx.doi.org/10.1109/rwp.2019.8810209.

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Pfeiffer, Carl, and Anthony Grbic. "Low profile lens antennas: Collimating leaky-wave radiation with metasurfaces." In 2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2015. http://dx.doi.org/10.1109/aps.2015.7304818.

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Callahan, Philip S. "Photonic ionic cloth radio amplifier for pumping IR radiation from living systems." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.fe5.

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Unfinished flax, Linum usitatissimum, soaked in a special ionic electrolyte and sandwiched between two cloth dielectrics (wool) is impedance matched to a de Tektronix 222 digital oscilloscope and used to amplify and detect ELF Schumann atmospheric waves between 1 Hz and 20 kHz. Preliminary experiments (oscilloscope recordings) indicate that the ELF Schumann frequencies vary according to geographic regions, e.g., 8 Hz in Ireland, 16 Hz in California, 24 Hz in Florida. Higher frequencies in the 1000 Hz to 2000 Hz electrical anesthesia portion of the spectrum are also evident. The ionic flax fibe
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Rahman, M. Shafiqur, and Uttam K. Chakravarty. "A Multiband RF Energy Harvesting System for Efficient Power Conversion." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23673.

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Abstract This paper presents a radio frequency (RF) energy harvesting (RFEH) system with a multiband antenna configuration that can simultaneously harvest energy from the sub-6 GHz and 5G millimeter-wave (mm-Wave) frequency bands. The performance of the RFEH system is studied from −25 dBm to 5 dBm input power levels underlying the maximization of the overall efficiency and possible optimization strategies. The maximum achievable power conversion efficiency (PCE) is formulated as a mathematical programming problem and solved by optimizing the design factors including antenna geometry, operation
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Dutton, T., P. M. Rentzepis, D. Rogovin, T. P. Shen, and J. Scholl. "Transient beam combination with circularly polarized radiation." In OSA Annual Meeting. Optica Publishing Group, 1991. http://dx.doi.org/10.1364/oam.1991.wq7.

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We examine coherent energy transfer between two circularly polarized degenerate Gaussian laser beams whose pulsewidth is of the order of the medium response time. For this situation, energy transfer proceeds via a phase lag that arises from the finite response time of the nonlinear medium and the pulsed nature of the incident light beams. Locally, this phase lag is driven by the difference in the local intensities of the two laser beams. Previously, we studied the gain as a function of beam delay for the case of a linearly polarized probe and a circularly pump wave, with a large pump to probe
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Suraweera, Thushara, and Chandana Jayaratne. "Variation of Microwave Leakage Exposure Levels Close to a Microwave Oven with Load, Container Type and Time." In The SLIIT International Conference on Engineering and Technology 2022. Faculty of Engineering, SLIIT, 2022. http://dx.doi.org/10.54389/xzpp2672.

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Nowadays people are living in a rush world and most people seek efficient methods to complete their day to day work with less time. Microwave ovens are the best option to cook foods as well as for reheating precooked foods. Microwave ovens use radio frequency (RF) electromagnetic waves around the frequency 2.4 GHz for cooking and reheating food by dielectric heating or high frequency heating. Many scientific reports have been confirmed that eating microwave food is not a risk, because radio waves cannot ionize foods. But the problem is exposing to the leakage microwave radiation when operating
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Zirlott, Carmen D., and David A. Nelson. "Surface Temperature Response to Millimeter Wave Exposure as an Indicator of Skin Blood Flow." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206747.

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The aim of this research project is to test the feasibility of using low-power radio frequency (RF) radiation operating in the millimeter wave (MMW) range and non-contact infrared temperature acquisition to measure skin blood-flow rates. MMW is the band of the electromagnetic spectrum from 30 to 300 GHZ. It has been shown that millimeter waves will cause a local temperature rise in the skin, without the harmful effects of ionizing radiation [1]. Skin blood flow is a physiological variable that is essential in the assessment of many diseases, such as diabetes, and can also be the determining fa
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Владимир Казаросович, Абрамян,, Гель, Валентин Эдуардович, Дворников, Александр Сергеевич, and Жирохов, Андрей Игоревич. "EMISSION OF ELECTROMAGNETIC WAVES (EMW) IN NETWORKS WITH NON-STATIONARY HARMONIC CURRENTS." In Высокие технологии и инновации в науке: сборник статей международной научной конференции (Санкт-Петербург, Ноябрь 2022). Crossref, 2022. http://dx.doi.org/10.37539/221116.2022.75.63.002.

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Рассматривается возникновение ЭМВ радиочастотного диапазона в среде, окружающей сети с нестационарными гармоническими токами; приводится методика оценки их энергетических характеристик; анализируется структура перераспределения интенсивности излучения в волновой зоне вследствие явления дифракции. The occurrence of EMW in the radio frequency range in the environment surrounding the network with non-stationary harmonic currents is considered; a method for estimating their energy characteristics is given; the structure of redistribution of the radiation intensity in the wave zone due to the pheno
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Ionin, A. A., A. A. Kotkov, A. P. Napartovich, L. V. Seleznev, and P. A. Svotin. "Phase conjugation in CO2 laser medium: theory and experiment." In The European Conference on Lasers and Electro-Optics. Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cthn5.

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Phase conjugation (PC) processes at degenerate four-wave mixing (DFWM) in the active medium of a pulsed e-beam controlled discharge CO2-laser were studied both experimentally and theoretically. The experiment was carried out with the following parameters: laser gas mixture CO2:N2:He=1:2:4, gas pressure 0.3 bar, active medium length 1.2 m, resonator length 12 m (17.7 m for single line laser), interaction angle ~10 mrad at DFWM without optical delay between probe wave and co-propagating pump one. Integral PC reflectivity (PCR) strongly depends on such parameters as: specific input energy (Fig. 1
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