Tarmo Koppel

TL;DR: In this paper, a review of the approaches related to porous high EMI shielding composite materials that have very low density values is presented, focusing on porous materials for electromagnetic interference (EMI) shielding.

TL;DR: It is postulate that the whole increase in the incidence of thyroid cancer in Sweden cannot be attributed to better diagnostic procedures and increasing exposure to ionizing radiation, e.g. medical computed tomography (CT) scans, and to RF-EMF (non-ionizing radiation) should be further studied.

TL;DR: The Stockholm Central Railway Station in Sweden was investigated for public radiofrequency (RF) radiation exposure and almost all of the total measured levels were above the precautionary target level of 3–6 μW/m2 as proposed by the BioInitiative Working Group in 2012.

TL;DR: The results of outdoor RF radiation exposure at Stockholm Old Town are significantly above the scientific benchmark for possible health risks, and below the reference level on 10,000,000 µW/m2 established by the International Commission on Non-Ionizing Radiation Protection (ICNIRP).

TL;DR: In this paper, the radiofrequency reflection and transmission characteristics of common building materials were investigated, which can broadly be divided into three groups: 1) load bearing materials - concrete, aerated concrete, LECA concrete; 2) thermal insulation materials - foamed polystyrene, mineral wool; 3) cover materials - gypsum based plates and wood dust/chips boards.