The increasing radiofrequency (RF) electromagnetic radiation pollution resulting from the development and use of technologies utilizing RF has sparked debate about the possible biological effects of said radiation. Of particular concern is the potential impact on the brain, due to the close proximity of communication devices to the head. The main aim of this study was to examine the effects of long-term exposure to RF on the brains of mice in a real-life scenario simulation compared to a laboratory setting. The animals were exposed continuously for 16 weeks to RF using a household Wi-Fi router and a laboratory device with a frequency of 2.45 GHz, and were compared to a sham-exposed group. Before and after exposure, the mice underwent behavioral tests (open-field test and Y-maze); at the end of the exposure period, the brain was harvested for histopathological analysis and assessment of DNA methylation levels. Long-term exposure of mice to 2.45 GHz RF radiation increased their locomotor activity, yet did not cause significant structural or morphological changes in their brains. Global DNA methylation was lower in exposed mice compared to sham mice. Further research is needed to understand the mechanisms behind these effects and to understand the potential effects of RF radiation on brain function.

In the context of the implementation of Directive 2013/35/EU, this paper addresses some specific aspects of occupational and non-occupational exposure in distinct situations. There is covered the shipboard personnel exposure to magnetic fields produced by the onboard power plant and ship propulsion system and to radiofrequency fields produced by communications and radar stations. In addition, it is brought into discussion a new chapter in the research of exposure to electromagnetic fields, i.e. the study of the biological effects of electromagnetic fields exposure of fetuses, infants and prematurely born.

There is described the study of several configurations of electromagnetic screens, and their suitability and efficacy of shielding the electromagnetic emissions of information systems. The first type of screen configuration consists of parallel metallic wires or carbon strips, equally spaced, while the second type of screens is represented by a rectangular grid composed of sets of wires or strips placed on two perpendicular directions. The shielding effectiveness of screens is determined by numerical and experimental means, and the results are discussed based on the screen transparency. The experimental research is performed in an anechoic chamber, and two frequency ranges 5 - 6 GHz and 100 MHz - 1 GHz, respectively.

There is described and assessed the ellipsoidal shell model for solving the ship's magnetic signature. This model relies on the premises of equating the mass of magnetic materials used in the ship hull construction with the mass of material of the ellipsoidal shell. The magnetic field is computed in a horizontal plane situated below the analyzed body, starting from the solution to Laplace's equation formulated in the ellipsoidal coordinate system, and by applying the variable separation method. The field computation is performed in the situations: the external field is parallel to the ellipsoid's main axis and perpendicular to it, respectively. The model is analyzed by comparing the computation results to the numerical model constructed in Ansoft Maxwell environment, and, finally, to a set of measurements performed on the actual ship.

The paper describes the process of detecting the signals representing the image shown on the video display of a laptop. There were selected several graphical images consisting in horizontal bars of various widths and the measurements were performed in two stages using two types of chargers for the laptop: a commercial-off-the-shelf (COTS) power supply and a shielded one,respectively. There are discussed the emission levels when using the shielded/COTS power supply, as well as the insertion loss of the electronic filter within the shielded power supply.

The contactless transmission of electrical power has many important advantages in modern technology through the lack of electrical contacts and therefore of their ageing, the facile use in aggressive or explosive environments, in marine environments, medical applications, in electrical vehicles, in robotics. The efficiency is comparable to the galvanic contact transmission at small and medium distances but there is also the ability to simultaneously transmit energy and data. The paper makes a review of the main recent Romanian and foreign publications on the main techniques of contactless power transmission, regarding the optimization of the coupler “figure of merit”, and compensation topology, using both circuit analysis and FEM analysis. A recent application to contactless transmission via conductive fluids is discussed. Also, there are discussed the perspectives of the research, development and use of the described methods in the following years, in the scope of achieving interoperability, increasing the efficiency and the power transfer.