On: “3-D localization of buried objects by nearfield electromagnetic holography” (Y. Guo, H. W. Ko, and D. M. White, GEOPHYSICS, 63, 3, 880–889).

Geophysics ◽  
1999 ◽  
Vol 64 (4) ◽  
pp. 1335-1335
Author(s):  
Michael Zhdanov
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Basic Principles ◽  
Buried Objects

The authors present a method of localizing underground objects with low‐frequency electromagnetic field based on ideas of electromagnetic holography. Though I do strongly support this method and practical results presented in the paper, I should note that the authors neglected in their paper to reference the previous publications on this subject, where the basic principles, ideas, methods, and term “electromagnetic holography” have been already introduced and developed as applied to low‐frequency electromagnetic field underground imaging.

Comparison of high- and low-frequency electromagnetic field analysis

1993 ◽  
Vol 3 (3) ◽  
pp. 363-371 ◽  
Author(s):  
A. Konrad ◽  
I. A. Tsukerman
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Field Analysis

Low-frequency Pulsed Electromagnetic Field Therapy in Fibromyalgia

2009 ◽  
Vol 25 (8) ◽  
pp. 722-728 ◽  
Author(s):  
Serap Tomruk Sutbeyaz ◽  
Nebahat Sezer ◽  
Fusun Koseoglu ◽  
Sibel Kibar
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
Pulsed Electromagnetic Field ◽  
Field Therapy ◽  
Pulsed Electromagnetic ◽  
Pulsed Electromagnetic Field Therapy

Extremely low-frequency electromagnetic field (EMF) generates alterations in the synthesis and secretion of oestradiol-17 β (E 2 ) in uterine tissues: An in vitro study

2018 ◽  
Vol 110 ◽  
pp. 86-95 ◽  
Author(s):  
Anna Koziorowska ◽  
Ewa Monika Waszkiewicz ◽  
Maria Romerowicz-Misielak ◽  
Kamila Zglejc-Waszak ◽  
Anita Franczak
Keyword(s):  
Electromagnetic Field ◽  
Low Frequency ◽  
In Vitro Study ◽  
Vitro Study ◽  
Extremely Low Frequency

scholarly journals The Influence of the Extremely Low Frequency Electromagnetic Field on Clear Cell Renal Carcinoma

2021 ◽  
Vol 22 (3) ◽  
pp. 1342
Author(s):  
Aleksandra Cios ◽  
Martyna Ciepielak ◽  
Wanda Stankiewicz ◽  
Łukasz Szymański
Keyword(s):  
Electromagnetic Field ◽  
Cancer Cells ◽  
Cell Lines ◽  
Renal Carcinoma ◽  
Clear Cell ◽  
Low Frequency ◽  
Inhibitory Effect ◽  
Hek293 Cells ◽  
Clear Cell Renal Carcinoma ◽  
Cell Renal Carcinoma

The development of new technologies and industry is conducive to the increase in the number and variety of electromagnetic field (EMF) sources in our environment. The main sources of EMF are high-voltage lines, household appliances, audio/video devices, mobile phones, radio stations, and radar devices. In the growing use of electronic devices, scientists are increasingly interested in the effects of EMF on human health. Even though many studies on the effects of EMF have already been carried out, none of them has shown a significant effect on mammals, including humans. Moreover, it is not entirely clear how EMF influences cell behavior. The International Agency for Research on Cancer on 31 May 2011, classified PEM as a possible carcinogenic factor. This study aimed to investigate the effect of the electromagnetic field on morphological and functional changes in clear cell renal carcinoma. The research was carried out on in vitro cultures of four cell lines: HEK293, 786-O 769-P, and Caki1. The results of the research showed that the EMF of low frequency had a slight effect on the viability of cells. EMF, which induced cell arrest in the G1 phase, increased the number of early apoptotic cells and decreased the number of viable cells in the 786-O line. EMF did not affect the proliferation and viability of HEK293 cells. Extreme low-frequency EMF (ELF-EMF) also showed an inhibitory effect on the migration and metastatic properties of clear cell kidney cancer cells. Moreover, shortly after the end of ELF-EMF exposure, significant increases in ROS levels were observed in all tested cell lines. As part of the work, it was shown that low-frequency EMF shows an inhibitory effect on the proliferation of primary cancer cells, diminishing their migratory, invasive, and metastatic abilities. It also increases the apoptosis of cancer cells and the amount of reactive oxygen species. Based on the results of our research, we want to point up that the effect of ELF-EMF depends on a specific metabolic state or at a specific stage in the cell cycle of the cells under study.

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