Zobrazeno 1 - 10
of 234
pro vyhledávání: '"Hyung Do Choi"'
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
Abstract Orbital angular momentum (OAM) mode combining and canceling in the near-field was investigated using a Cassegrain dual-reflectarray antenna composed of multiple microstrip patches on the main and sub-reflectarrays. Microstrip patches on diel
Externí odkaz:
https://doaj.org/article/513dda5a3f0649c597c96cbd36ddf544
Publikováno v:
Neural Regeneration Research, Vol 18, Iss 11, Pp 2497-2503 (2023)
We have previously found that long-term effects of exposure to radiofrequency electromagnetic fields in 5×FAD mice with severe late-stage Alzheimer’s disease reduced both amyloid-β deposition and glial activation, including microglia. To examine
Externí odkaz:
https://doaj.org/article/344b0a4ae8724c1a8cbbe3e3366e0513
Publikováno v:
Applied Sciences, Vol 13, Iss 21, p 11777 (2023)
This paper proposes a field probe to measure the power density (PD) at a millimeter-wave (mmWave) frequency band. The proposed probe is composed of a loop antenna in which one end is terminated with a load resistor. Such a structure enables the simul
Externí odkaz:
https://doaj.org/article/ab5fd22e29a6473fb16a1346c07ff697
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 22, Iss 1, Pp 41-47 (2022)
This paper presents the representative numerical modeling of smartphones with wideband code division multiple access (WCDMA), long-term evaluation (LTE), and wireless local area network (WLAN) bands for epidemiological studies. For this purpose, base
Externí odkaz:
https://doaj.org/article/be9eb7880f344cef9118168ce8e666fc
Publikováno v:
Applied Sciences, Vol 13, Iss 7, p 4614 (2023)
This study compares the performance of graph convolutional neural network (GCN) models with conventional natural language processing (NLP) models for classifying scientific literature related to radio frequency electromagnetic field (RF-EMF). Specifi
Externí odkaz:
https://doaj.org/article/f26f005c409540a79658f083e850306f
Autor:
Carolina Calderón, Gemma Castaño-Vinyals, Myron Maslanyj, Joe Wiart, Ae-Kyoung Lee, Masao Taki, Kanako Wake, Alex Abert, Francesc Badia, Abdelhamid Hadjem, Hans Kromhout, Patricia de Llobet, Nadège Varsier, Emmanuelle Conil, Hyung-Do Choi, Malcolm R. Sim, Elisabeth Cardis
Publikováno v:
Environment International, Vol 163, Iss , Pp 107189- (2022)
Wireless phones (both mobile and cordless) emit not only radiofrequency (RF) electromagnetic fields (EMF) but also extremely low frequency (ELF) magnetic fields, both of which should be considered in epidemiological studies of the possible adverse he
Externí odkaz:
https://doaj.org/article/15c69473fdf74e8d82bf8021fca2eff9
Publikováno v:
ETRI Journal, Vol 41, Iss 3, Pp 337-347 (2019)
The specific anthropomorphic mannequin (SAM) phantom was designed to provide a conservative estimation of the actual peak spatial specific absorption rate (SAR) of the electromagnetic field radiated from mobile phones. However, most researches on the
Externí odkaz:
https://doaj.org/article/f022892e8af54766b7e00a03fda81c05
Publikováno v:
Antioxidants, Vol 11, Iss 8, p 1449 (2022)
Recently, the impacts of 5G electromagnetic radiation (EMR) with 28 GHz on human health have been attracting public attention with the advent of 5G wireless communication. Here, we report that 5G (28 GHz) EMR can attenuate the skin pigmentation in mu
Externí odkaz:
https://doaj.org/article/252ffd0b3eed4bab8b985e7311d3dfc5
Publikováno v:
Brain and Behavior, Vol 10, Iss 11, Pp n/a-n/a (2020)
Abstract Introduction Due to public concerns about deleterious biological consequences of radiofrequency electromagnetic fields (RF‐EMF), the potential effects of RF‐EMF on the central nervous system have received wide consideration. Methods Here
Externí odkaz:
https://doaj.org/article/15fdf9b3709645df84373dbcb6d5b03a
Publikováno v:
Journal of the Korean Institute of Electromagnetic Engineering and Science, Vol 18, Iss 4, Pp 242-247 (2018)
This paper studies a convenient electromagnetic field (EMF) compliance assessment for base station installations at a millimeter wave (mmW) frequency. We utilize ray-tracing analysis as a numerical method for examining the wave propagation characteri
Externí odkaz:
https://doaj.org/article/5aa10c215f9e4b2db2aeb75e857e5666