A5063185506- Radioactivity and Radon Measurements
- Nuclear and radioactivity studies
- Radioactive contamination and transfer
- Radiation Detection and Scintillator Technologies
- Graphite, nuclear technology, radiation studies
- Radiation Dose and Imaging
- Geophysical Methods and Applications
- Earthquake Detection and Analysis
- Conservation Techniques and Studies
- Nuclear Physics and Applications
- Legionella and Acanthamoeba research
- Building materials and conservation
- Air Quality Monitoring and Forecasting
Babeș-Bolyai University
2010-2025
Eötvös Loránd University
2008
Radon accumulation in indoor environments poses a significant public health concern, especially educational institutions, where children are particularly vulnerable. This study investigates radon activity concentrations (IRAC) 198 institutions and 266 houses from Cluj-Napoca, Romania, analyzing total of 1440 rooms. levels were assessed using CR-39 track detectors, with measurements conducted over three twelve-month periods for residential buildings, respectively. Preliminary results reveal...
In the present study, measurements of radon were carried out using LUK-VR system based on gas with Lucas cells. The radium concentration in water was determined, same device, immediately after established equilibrium radium. results presented here are from a survey N-W region Transylvania (Romania) which investigated concentrations natural (spring, well and surface) drinking (tap) waters. showed within range 0.4-187.3 Bq l(-1) an average value 15.9 whereas varied between 0.05 0.825 0.087 for...
In the aftermath of postvolcanic activity, dry gases, containing mainly CO2, bring along radioactive gases such as radon (222Rn) and thoron (220Rn) that migrate together to surface. Tectonic faults facilitate upward migration these gases. The study described here is based on measurements activity concentrations performed around mofettes mineral springs at Harghita Bai, Mts. (part Neogene Volcanic region Eastern Carpathians, Romania). aim was identify location direction fault system controls...
In many countries, caves can pose an economic interest for the authorities and stakeholders. The development of a show cave requires, apart from conservation issues, to ensure human safety by minimising exposure radon personnel visitors. Radon levels vary widely cave, being directly correlated with different internal external factors. It is therefore important monitor before establishing number required, so that they are not exposed health-threatening radiation. A long-term survey was...
Measurements have been carried out using four types of passive detectors in the most popular show caves Romania. Three (RSKS, RadTrak and CD) were used for radon measurements two (Raduet thoron measurement. Activity concentrations air measured same locations seasons, autumn winter. Measured values different varied between below detection limit (5 Bq m-3) 4024 m-3 from 10 to 583 thoron. The results indicate a very good correlation RSKS (r = 0.96). significant difference with (RSKS was higher...
The aim of this study was to assess the monthly variation radon concentration in soil. Besides soil, measured parameters were soil permeability, air temperature, pressure, humidity and wind speed. measurements conducted for seven months, from December June. For permeability RadonJok device used determination activity it Luk-3C device, equipped with scintillation cells. highest June (48 kBq m-3). Due precipitations, on surface a water film created as result could not diffuse into atmosphere....
Abstract A recent challenge in research dedicated to residential exposure radon comes from the growing number of houses retrofitted reduce energy consumption. Efficiently insulated buildings and modern architectural solutions can lead accumulation high levels indoor pollutants. systematic analysis was conducted a complex (consisting six houses) order assess annual concentration evaluate intensity relationships with various factors, such as indoor-outdoor temperature differences, wind speed...
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This study presents results of a complex survey about residential, soil and water radon in the North Mureş county (Romania). Indoor measurements were performed by using CR-39 track detectors, while concentrations measured LUK3C device accessories. The indoor 157 houses ranged from 9 to 414 Bq m-3, with an arithmetic mean 131 m-3 geometric 105 m-3. In ~3.2% investigated exceed recommended reference level 300 gas 137 sampling points varied 5.0 88.0 kBq 14.6 Results 190 samples shows 0.2 28.0...