Search Results

You are looking at 1 - 10 of 69 items for :

  • "electromagnetic field" x
  • Refine by Access: All Content x
Clear All

Extremely low-frequency electromagnetic field generated by transformer stations located within buildings has been suspected to initiate non-specific health problems. This possibility was examined in model experiments in rats. Following short-term exposure (50 Hz, 500 μT, 20 min), situational and social anxiety as well as locomotor activity pattern were examined by several different tests (elevated plus-maze, novel object exploration, social interaction and territoriality).Based on our results having obtained so far, it seems that these field parameters (that equals the official reference limit for workers) may cause some kind of discomfort, may influence behavior, increase passivity and situational anxiety, but has no verified effect on the social and territorial behavior.

Restricted access

Radiation Research Institute strictly emphasize on the hazards of electromagnetic fields that threaten the public health as a major environmental risk. ICNIRP has announced the standard limit of occupational exposure and non-occupational residential exposure

Open access

399 143 147 Celestino, C., Picazo, M. L., Toribio, M. (2000) Influence of chronic exposure to an electromagnetic field to germination and early

Restricted access

Aqueous nanostructures in water induced by electromagnetic fields emitted by EDS

A conductometric study of fullerene and carbon nanotube EDS

Journal of Thermal Analysis and Calorimetry
Authors:
V. Elia
,
L. A. Marrari
, and
E. Napoli

augmented by the presence of molecular aggregates of water molecules. The purpose of this work is to systematically verify, using a large number of samples, the possibility that EDS transmit to pure (twice-distilled) water, via electromagnetic fields

Restricted access

Panagopoulos, D. J., Karabarbounis, A., Margaritis, L. H. (2002) Mechanism for action of electromagnetic fields on cells. Biochem. Biophys. Res. Commun. 298, 95-102. Mechanism for

Restricted access

. Mayergoyz I. D. Nonlinear diffusion of electromagnetic fields , Academic Press, San Diego, 1998. Mayergoyz I. D. Nonlinear diffusion of electromagnetic

Restricted access

From the bibliography it is well known that pulsatile electromagnetic field has an anti-inflammatory and analgesic effect. It causes vasodilatation, myorelaxation, hyper-production of connective tissue and activation of the cell membrane. Therefore our aim was to study the possible therapeutic effect of pulsatile electromagnetic field in asthmatic children. Forty-two children participating in this study were divided in two groups. The 1st group consisting of 21 children (11 females, 10 males, aged 11.8±0.4 yr) was treated by pulsatile electromagnetic field and pharmacologically. The 2 nd group served as control, consisting also of 21 children (11 females, 10 males, aged 11.7±0.3 yr) and was treated only pharmacologically. Therapeutic effect of the pulsatile electromagnetic field was assessed on the basis of pulmonary tests performed by means of a Spirometer 100 Handi (Germany). The indexes FVC, IVC, ERV, IRV, FEV1, FEV1/FVC%, MEF75,50,25, PEF, PIF and the changes of the flow-volume loop were also registered. The pulsatile electromagnetic field was applied by means of the device MTU 500H, Therapy System (Brno, Czech Republic) for 5 days, two times daily for 30 minutes (magnetic induction: 3 mT, frequency: 4 Hz as recommended by the manufacturer). The results in children of the 1st group showed an improvement of FVC of   about 70 ml, IVC of about 110 ml, FEV1

Restricted access

The aim of the study was to determine the effect of alternating electromagnetic field (EMF; 50 Hz frequency, 50 and 100 μT induction) on cardiac work of the chick embryo. Eggs from the experimental groups were exposed to EMF throughout incubation. During the experiment, heart rate (ballistocardiographic method), thyroxine (T4) and triiodothyronine (T3) concentrations, heart weight, ventricle wall thickness, and levels of alanine aminotransferase (ALT) and aspartate aminotransferase (AST) were determined. The results show, for the first time, that the exposure of chick embryos to EMF augments the heart rate, especially from 17 days of incubation. The increased heart rate in the embryos exposed to EMF was associated with considerable increases in plasma T4 and T3 concentrations, which were recorded during the final stage of embryogenesis. The significant effect of the 100-μT field on heart weight and blood AST levels in the embryos suggests that EMF has a direct effect on the physiological function of cardiac muscle.

Restricted access

Abstract  

The influence of electromagnetic field in wide range of frequency (extra low frequency magnetic field, monochromatic laser light 840 nm, ultraviolet light) and static magnetic field on the stability of aqueous and NaCl 0.9% haemoglobin solutions was studied using differential scanning calorimetry (DSC) method. Three steps of denaturation process can be derived from experimental data. The shifts of transition temperatures are more marked for NaCl 0.9% than for aqueous solutions. The results suggest that static magnetic field is effective in protecting protein, while ultraviolet radiation destabilises haemoglobin. The laser light and alternating magnetic field have a little effect on the thermal stability of haemoglobin.

Restricted access

Maxwell J. C. A dynamical theory of the electromagnetic field, Philosophical Transactions of the Royal Society, London, 1865, pp. 459–512. Maxwell J C A

Restricted access