Electromagnetic Radiation Reduction in 5G Networks and Beyond Using Thermal Radiation Mode

Photothermal therapy is a developing therapeutic technic mainly regarding the usage of nanoparticles considering their proneness to assemble around malignant tissue and induce their destruction by converting electromagnetic radiation into thermal radiation. In order to optimize this process, controlling the area of incidence in a way that it can fit the tumour and prevent damage of healthy cells is of great importance. This study was conducted by designing an optical system based on zoom systems for manipulating an initial input beam and adjust it to the most common skin cancer sizes. Two solutions are proposed, accomplishing spot sizes at 150 mm from the last lens within the approximate range of 2 mm to 76 mm, with beam divergences lower than 3 mrad.

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Thermal radiation ofsubwavelengthparticles

Applied Physics ◽

10.51368/1996-0948-2021-2-12-21 ◽

2021 ◽

pp. 12-21

Keyword(s):

Particle Size ◽

Thermal Radiation ◽

Electromagnetic Radiation ◽

Particle Shape ◽

Radiation Spectrum ◽

Simple Scheme ◽

Blue Region ◽

Integral Radiation ◽

Planck’S Law

A method is proposed for calculating the dependences of the emissivity of subwavelength parti-cles (SP) from various materials in the form of disks, spheres, cubes and cylinders on their sizes (D) and temperature (T), for cases when external electromagnetic radiation practically does not affect their temperature. For all the listed types of particles, the cutoff wavelengths λcutoffdepending on the size of the SP and the particle shape coefficients ξare determined. With a decrease in the particle size, from the radiation spectrum, which was originally described by Planck's law, wavelengths exceeding λcutoffare gradually excluded. This leads to a decrease in the integral radiation, a decrease in the emissivity and a shift of the radiation spectrum to the blue region. A simple scheme is also proposed for determining ε -the emission coefficients of the midrange according to the calculated graph ε (U), where: U = (ξ × D × T) / B; B is the con-stant of the Wien displacement formula.

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Opening Remarks

Highlights of Astronomy ◽

10.1017/s1539299600009023 ◽

1992 ◽

Vol 9 ◽

pp. 263-263

Author(s):

R. B. Partridge

Keyword(s):

Thermal Radiation ◽

Electromagnetic Radiation ◽

General Assembly ◽

X Rays ◽

International Astronomical Union ◽

X Ray ◽

Radiation Fields ◽

International Astronomical ◽

Wide Range ◽

Very High

The following papers formed a Joint Discussion sponsored by Commissions 40, 44, 47 and 48 of the International Astronomical Union. The topic was Cosmic Backgrounds. The plural “backgrounds” is important. Speakers considered electromagnetic radiation fields ranging from radio wavelengths to X-rays. Because other sessions at this General Assembly treated higher energy backgrounds, in particular the X-ray region, emphasis in this Joint Discussion was on radio and infrared backgrounds. In addition to the wide range of wavelengths covered, the session also dealt with a wide range of models for various backgrounds. For instance, at some wavelengths (e.g., λ ~ 1 cm) the background is truly a background, generated at very high redshifts—in this case a thermal radiation field at ~ 3 K. At other wavelengths (e.g., in the X-ray region) the “background” may consist in whole or in part of the summed emission from many unresolved or subliminal sources.

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Fifth Generation of Wireless Networks (5G): Problems and Risks

Ecology and Industry of Russia ◽

10.18412/1816-0395-2020-12-58-65 ◽

2020 ◽

Vol 24 (12) ◽

pp. 58-65

Author(s):

S.G. Kharchenko ◽

N.K. Zhizhin

Keyword(s):

Electromagnetic Radiation ◽

Military Bases ◽

5G Networks ◽

Council Of Europe ◽

Fifth Generation ◽

5G Network ◽

Directed Energy ◽

The Military ◽

The Internet Of Things ◽

The Eu

The article is devoted to the analysis of electromagnetic radiation of fifth generation (5G) networks. The characteristic of the 5G electromagnetic radiation spectrum and its features is given. The main advantages of implementing 5G networks proceeding from the Concept of the Ministry of communications of Russia are analyzed, including the Internet of Things, artificial intelligence, augmented, extended reality, and virtual reality. Nine ways in which 5G and IoT will cause serious harm to people, wildlife, and our Earth are summarized. The conclusions of the Concept are being questioned. The article analyzes the results that the military personnel is expecting from the 5G network, including the introduction of hypersonic weapons, the creation of "smart military bases", "combat networks", the use of "portable combat items", drones, non-lethal, directed energy electronic weapons. It is justified: how does 5G differ qualitatively and quantitatively from 4G in its impact on human health. Based on the appeal of scientists and environmental organizations from 219 countries to the UN, the WTO, the EU, the Council of Europe and the governments of all States, the demand for the immediate termination of the deployment of a 5G wireless network on Earth and in space is justified.

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Modeling of thermal radiation mode of "hot" shops in the software system ANSYS FluidFlow (CFX) and justification of thermal protection methods of the heat treaters

10.1063/1.5138460 ◽

2019 ◽

Cited By ~ 2

Author(s):

Y. I. Bulygin ◽

E. V. Shchekina ◽

V. V. Maslensky ◽

D. S. Popov ◽

A. V. Tryukhan

Keyword(s):

Thermal Radiation ◽

Thermal Protection ◽

Software System ◽

Radiation Mode

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Electromagnetic radiation reduction using novel metamaterial for cellular applications

Radiation Physics and Chemistry ◽

10.1016/j.radphyschem.2020.108976 ◽

2021 ◽

Vol 178 ◽

pp. 108976 ◽

Cited By ~ 1

Author(s):

Ahmed Mahfuz Tamim ◽

Mohammad Rashed Iqbal Faruque ◽

Mayeen Uddin Khandaker ◽

Mohammad Tariqul Islam ◽

David Andrew Bradley

Keyword(s):

Electromagnetic Radiation ◽

Radiation Reduction

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Thermal responses to high-frequency electromagnetic radiation fields

PsycEXTRA Dataset ◽

10.1037/e536112008-001 ◽

1976 ◽

Keyword(s):

Electromagnetic Radiation ◽

High Frequency ◽

Radiation Fields

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Characterizing the convective heat exchange with plastic shading nets under natural arid conditions

International Journal of Energy Technology ◽

10.32438//ijet.11415 ◽

2019 ◽

pp. 11-20

Author(s):

Ahmed M Abdel-Ghanya ◽

Ibrahim M Al-Helal

Keyword(s):

Wind Speed ◽

Thermal Radiation ◽

Convective Heat ◽

Convective Heat Transfer Coefficient ◽

Convective Heat Exchange ◽

Radiative Properties ◽

Wooden Frame ◽

Arid Conditions ◽

Air Temperatures ◽

Radiation Fluxes

Plastic nets are extensively used for shading purposes in arid regions such as in the Arabian Peninsula. Quantifying the convection exchange with shading net and understanding the mechanisms (free, mixed and forced) of convection are essential for analyzing energy exchange with shading nets. Unlike solar and thermal radiation, the convective energy, convective heat transfer coefficient and the nature of convection have never been theoretically estimated or experimentally measured for plastic nets under arid conditions. In this study, the convected heat exchanges with different plastic nets were quantified based on an energy balance applied to the nets under outdoor natural conditions. Therefore, each net was tacked onto a wooden frame, fixed horizontally at 1.5-m height over the floor. The downward and upward solar and thermal radiation fluxes were measured below and above each net on sunny days; also the wind speed over the net, and the net and air temperatures were measured, simultaneously. Nets with different porosities, colors and texture structures were used for the study. The short and long wave’s radiative properties of the nets were pre-determined in previous studies to be used. Re and Gr numbers were determined and used to characterize the convection mechanism over each net. The results showed that forced and mixed convection are the dominant modes existing over the nets during most of the day and night times. The nature of convection over nets depends mainly on the wind speed, net-air temperature difference and texture shape of the net rather than its color and its porosity.

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