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Projects / Programmes source: ARIS

The measurements and mechanisms of biological effects of electromagnetic fields

Research activity

Code Science Field Subfield
2.15.01  Engineering sciences and technologies  Metrology  Sensors and data acquisition 

Code Science Field
P180  Natural sciences and mathematics  Metrology, physical instrumentation 
B130  Biomedical sciences  Physiological biophysics 
Keywords
electromagnetic fields, bioelectromagnetics, electrography, magnetic water treatment, FT-IR spectroscopy, calcite, aragonite, zeta potential measurements
Evaluation (rules)
source: COBISS
Researchers (14)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  11359  MSc Desimira Benedičič  Biotechnology  Researcher  1997 - 1999  11 
2.  16039  PhD Maja Berden Zrimec  Metrology  Researcher  1997 - 1999  261 
3.  16038  PhD Jasna Berljak  Biotechnology  Researcher  1997 - 1999  54 
4.  05692  PhD Dušan Fefer  Metrology  Researcher  1998 - 1999  588 
5.  03075  PhD Anton Jeglič  Metrology  Head  1999  509 
6.  05092  PhD Igor Jerman  Metrology  Researcher  1997 - 1999  280 
7.  04355  PhD Spomenka Kobe  Materials science and technology  Researcher  1997 - 1999  767 
8.  07264  PhD Srečko Koren  Microbiology and immunology  Researcher  1997 - 1999  226 
9.  18594  PhD Paul John Mc Guiness  Materials science and technology  Researcher  1997 - 1999  338 
10.  16162  MSc Barbara Plavšić  Chemistry  Researcher  1997 - 1999 
11.  06425  Anton Porenta  Chemical engineering  Researcher  1997 - 1999  10 
12.  10741  PhD Romana Ružič  Metrology  Researcher  1997 - 1999  133 
13.  17127  Drago Tacar    Researcher  1998 - 1999  57 
14.  04890  PhD Branka Wraber  Microbiology and immunology  Researcher  1997 - 1999  266 
Organisations (4)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  91,961 
2.  0381  University of Ljubljana, Faculty of Medicine  Ljubljana  1627066  48,742 
3.  0431  BION Institute  Ljubljana  5376041000  280 
4.  1538  University of Ljubljana, Faculty of Electrical Engineering  Ljubljana  1626965  28,012 
Abstract
The researches devoted to direct biological effects of electromagnetic fields demonstrated the capacity of organisms to react even to very weak fields, however only within certain physiological state. We were able to observe the bioeffects of the stimulative fields (sine wave, 0,025 and 0,1 mT, 50 Hz) on spruce seed germination mostly under stress conditions (drought, low pH, defined concentrations of Al, Ca etc.). In the optimal conditions there were no effects, neither were there growth effects of microwaves on yeast colonies. The researches demonstrated the possibility of bacterial and fungal cells to use an exogenous oscillating electric field of certain frequency for the transport of lactose. The study of endogenous electromagnetic radiation from organisms was developed by the computer controlled instrumental methods (the method of electrography). For experimental field generation and for calibration of biological sensors a system is required enabling us for precise control of field parameters including spatial dimension and structure of the field. Under normal conditions calcium carbonate crystallises as rhomboedral calcite which accumulates on surfaces exposed to hard water. Under the influence of a magnetic field, the unstable crystal form of calcium carbonate, aragonite was observed. Aragonite does not agglomerate and accumulate. The presence of impurities in the hard water was found to be very important for the formation of aragonite. Samples were analysed by means of EM, magnetic measurements and NGIA FT-IR spectroscopy, which appeared to be a useful method for characterisation and identification of the crystallisation products. With a new approach and the application of FT-IR spectroscopy, as used in thin film characterisation, the crucial importance of impurity elements, which influence the formation of aragonite under the applied magnetic field, was confirmed. The solutions were analysed by zeta potential measurements.
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