Electromagnetic Field Shielding in Incubators
Abstract
Purpose: Cell experiments are vitally dependent on CO2 incubators. The heating system of usual incubators result in undesirable induction of Electromagnetic (EM) fields on cells that result in decreased accuracy in bio-electromagnetic tests. EM shields can cause a considerable decrease in the stray fields and eliminate the undesirable induction.
Materials and Methods: CST-2019 is used for simulations. five different shielding systems have been examined in this paper. We try to modify shape and material used for shielding to achieve better result. (Iron, Mu-Metal, steel).
Results: We introduce a simple practical design, together with variations of previously reported ones, and numerical evaluation of their magnetic field attenuation.
Conclusion: The targeted design decreases the field within the shield to about 0.03 times of the incident magnetic field, while having holes for air and CO2 exchange.
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12- A. Cossarizza et al., "Exposure to low frequency pulsed electromagnetic fields increases interleukin-1 and interleukin-6 production by human peripheral blood mononuclear cells," Experimental cell research, vol. 204, no. 2, pp. 385-387, 1993.
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14- A. Basile et al., "Exposure to 50 Hz electromagnetic field raises the levels of the anti-apoptotic protein BAG3 in melanoma cells," (in eng), J Cell Physiol, vol. 226, no. 11, pp. 2901-7, Nov 2011, doi: 10.1002/jcp.22641.
15- B. J. Patton and J. L. Fitch, "Design of a room‐size magnetic shield," Journal of Geophysical Research, vol. 67, no. 3, pp. 1117-112, 1962.
16- H. Brake, H. Wieringa, and H. Rogalla, "Improvement of the performance of a mu -metal magnetically shielded room by means of active compensation (biomagnetic applications)," Measurement Science and Technology, vol. 2, p. 596, 01/01 1999.
2- L. A. Portelli, T. E. Schomay, and F. S. Barnes, "Inhomogeneous background magnetic field in biological incubators is a potential confounder for experimental variability and reproducibility," (in eng), Bioelectromagnetics, vol. 34, no. 5, pp. 337-48, Jul 2013, doi: 10.1002/bem.21787.
3- I. Gresits, P. P. Necz, G. Jánossy, and G. Thuróczy, "Extremely low frequency (ELF) stray magnetic fields of laboratory equipment: a possible co-exposure conducting experiments on cell cultures," (in eng), Electromagn Biol Med, vol. 34, no. 3, pp. 244-50, Sep 2015, doi: 10.3109/15368378.2015.1076440.
4- M. Reta-Hernández and G. G. Karady, "Attenuation of low frequency magnetic fields using active shielding," Electric power systems research, vol. 45, no. 1, pp. 57-63, 1998.
5- J. Malmivuo, J. Lekkala, P. Kontro, L. Suomaa, and H. Vihinen, "Improvement of the properties of an eddy current magnetic shield with active compensation," Journal of Physics E: Scientific Instruments, vol. 20, no. 2, p. 151, 1987.
6- W. R. Bennett, Health and low-frequency electromagnetic fields. Yale University Press New Haven, CT, 1994.
7- L. Cellini et al., "Bacterial response to the exposure of 50 Hz electromagnetic fields," (in eng), Bioelectromagnetics, vol. 29, no. 4, pp. 302-11, May 2008, doi: 10.1002/bem.20391.
8- R. Gaetani et al., "Differentiation of human adult cardiac stem cells exposed to extremely low-frequency electromagnetic fields," (in eng), Cardiovasc Res, vol. 82, no. 3, pp. 411-20, Jun 2009, doi: 10.1093/cvr/cvp067.
9- A. Cossarizza et al., "Exposure to low-frequency pulsed electromagnetic fields increases mitogen-induced lymphocyte proliferation in Down’s syndrome," Aging Clinical and Experimental Research, vol. 3, no. 3, pp. 241-246, 1991.
10- A. Cossarizza et al., "Extremely low frequency pulsed electromagnetic fields increase cell proliferation in lymphocytes from young and aged subjects," Biochemical and biophysical research communications, vol. 160, no. 2, pp. 692-698, 1989.
11- R. Cadossi et al., "Lymphocytes and low-frequency electromagnetic fields," The FASEB journal, vol. 6, no. 9, pp. 2667-2674, 1992.
12- A. Cossarizza et al., "Exposure to low frequency pulsed electromagnetic fields increases interleukin-1 and interleukin-6 production by human peripheral blood mononuclear cells," Experimental cell research, vol. 204, no. 2, pp. 385-387, 1993.
13- A. Lisi et al., "Extremely low frequency electromagnetic field exposure promotes differentiation of pituitary corticotrope-derived AtT20 D16V cells," (in eng), Bioelectromagnetics, vol. 27, no. 8, pp. 641-51, Dec 2006, doi: 10.1002/bem.20255.
14- A. Basile et al., "Exposure to 50 Hz electromagnetic field raises the levels of the anti-apoptotic protein BAG3 in melanoma cells," (in eng), J Cell Physiol, vol. 226, no. 11, pp. 2901-7, Nov 2011, doi: 10.1002/jcp.22641.
15- B. J. Patton and J. L. Fitch, "Design of a room‐size magnetic shield," Journal of Geophysical Research, vol. 67, no. 3, pp. 1117-112, 1962.
16- H. Brake, H. Wieringa, and H. Rogalla, "Improvement of the performance of a mu -metal magnetically shielded room by means of active compensation (biomagnetic applications)," Measurement Science and Technology, vol. 2, p. 596, 01/01 1999.
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| Issue | Vol 7 No 4 (2020) | |
| Section | Original Article(s) | |
| DOI | https://doi.org/10.18502/fbt.v7i4.5318 | |
| Keywords | ||
| Shielding Incubator Electromagnetics Cell Culture Protection Bioelectromagnetics | ||
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How to Cite
1.
Hashemi SA, Bazzi A, Cheldavi A, Saviz SM. Electromagnetic Field Shielding in Incubators. Frontiers Biomed Technol. 2020;7(4):211-216.
