scholarly journals Influence of some specific meteorological events on indoor radon dynamic in western Switzerland

2021 ◽  
Vol 2042 (1) ◽  
pp. 012138
Author(s):  
J Rey ◽  
S Goyette ◽  
M Palacios ◽  
F Barazza ◽  
M Gandolla ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Air Temperature ◽  
Meteorological Parameters ◽  
Indoor Radon ◽  
Indoor Environments ◽  
Outdoor Air ◽  
Indoor Radon Concentration ◽  
Weather Events ◽  
The World ◽  
Basic Statistical Analysis

Abstract Radon is a natural radioactive gas that may cumulate in indoor environments. The impacts of weather events on indoor radon concentration had been explored in different places around the world but only marginally in Switzerland. Using basic statistical analysis, this study investigates different meteorological parameters’ influence on indoor radon concentrations and shows that outdoor air temperature is the most influential beyond others. Finally, this paper highlights the importance of radon dynamic in buildings, a topic often overlooked by construction professionals and the broader public in Switzerland.

scholarly journals Long-Term Impacts of Weather Conditions on Indoor Radon Concentration Measurements in Switzerland

Atmosphere ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 92
Author(s):  
Joan Frédéric Rey ◽  
Stéphane Goyette ◽  
Mauro Gandolla ◽  
Martha Palacios ◽  
Fabio Barazza ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Indoor Radon ◽  
Weather Conditions ◽  
Indoor Environments ◽  
Indoor Radon Concentration ◽  
Prone Area ◽  
Building Characteristics ◽  
Study Sites ◽  
Radon Measurements

Radon is a natural and radioactive gas that can accumulate in indoor environments. Indoor radon concentration (IRC) is influenced, among other factors, by meteorology, which is the subject of this paper. Weather parameters impact indoor radon levels and have already been investigated, but rarely in Switzerland. Moreover, there is a strong need for a better understanding of the radon behaviour inside buildings in Switzerland for public health concerns as Switzerland is a radon prone area. Based on long-term, continuous, and hourly radon measurements, radon distributions classified according to different weather event definitions were investigated and then compared at three different study sites in Western Switzerland. Outdoor temperature influences the most indoor radon, and it is globally anti-correlated. Wind influences indoor radon, but it strongly depends on intensity, direction, and building characteristics. Precipitation influences periodically indoor radon levels relatively to their intensity. Atmospheric pressure and relative humidity do not seem to be huge determinants on IRC. Our results are in line with previous findings and provide a vivid example in Western Switzerland. This paper underlines the different influence complexities of radon, and the need to communicate about it within the broader public and with construction professionals, to raise awareness.

scholarly journals RESULTS OF INDOOR RADON MEASUREMENTS IN THE REPUBLIC OF MACEDONIA: – A REVIEW –

2017 ◽  
Vol 38 (2) ◽  
pp. 137
Author(s):  
Zdenka Stojanovska ◽  
Blažo Boev ◽  
Ivan Boev
Keyword(s):  
Indoor Radon ◽  
Epidemiological Studies ◽  
Spatial And Temporal Variability ◽  
Indoor Environments ◽  
Indoor Radon Concentration ◽  
Factors Affecting ◽  
Republic Of Macedonia ◽  
Balkan Region ◽  
The Republic ◽  
Mitigation Methods

Radon and its short lived decay products accumulated in indoor environment are the main source of public exposure to natural radiations. The health effects as well as a great number of natural and artificial factors affecting the radon accumulation in indoor environments are some of the motives for the scientific interest in radon issue. Following this global trend, many studies of indoor radon in the Balkan region, including the Republic of Macedonia have been conducted in the last decade. This paper is an overview of the published papers regarding indoor radon concentration measurements with nuclear track detectors in the Republic of Macedonia. It gives basic information about the spatial and temporal variability of indoor radon over the territory of the country, following by a description of the some factors which affect its variations. This review attempts: to organize available indoor radon results in order to show clear picture of the so far conducted surveys; to highlight the need for continuation of more extensive radon investigation in workplaces; to motivate the building professionals to create as much as possible mitigation methods for indoor radon reduction, to motivate the health professionals for epidemiological studies etc.

scholarly journals Measurment of radon, thoron and their progeny in indoor environment of Mohali, Punjab, Northern India, using pinhole dosimeters

2016 ◽  
Vol 31 (3) ◽  
pp. 299-305 ◽  
Author(s):  
Vimal Mehta ◽  
Deep Shikha ◽  
Pal Singh ◽  
Pal Chauhan ◽  
Singh Mudahar
Keyword(s):  
Indoor Radon ◽  
Area Measurement ◽  
Indoor Environments ◽  
Indoor Radon Concentration ◽  
Annual Dose ◽  
Northern India ◽  
Decay Products ◽  
Radon Monitor ◽  
Thoron Progeny

The health hazards of radon and its decay products above certain levels are well known. However, for any preventive measures to be taken, we have to be aware of radon levels of that particular area. Measurement of radon and its decay products in indoor environments is an important aspect of assessing indoor air quality and health conditions associated with it. Keeping this in mind, measurements of radon, thoron and their progeny concentrations were carried out in Mohali, Northern India, using pinhole-based twin cup dosimeters. Radon exhalation rates of soil samples in the dwellings/areas were measured via an active technique of a continuous radon monitor. The indoor radon concentration in Mohali varied from 15.03 ? 0.61 Bq/m3 to 39.21 ? 1.46 Bq/m3 with an average of 26.95 Bq/m3 ,while thoron concentration in the same dwellings varied from 9.62 ? 0.54 Bq/m3 to 52.84 ? 2.77 Bq/m3 with an average of 31.09 Bq/m3. Radon progeny levels in dwellings under study varied from 1.63 to 4.24 mWL, with an average of 2.94 mWL, while thoron progeny levels varied from 0.26 to 1.43 mWL , with an average of 0.84 mWL. The annual dose received by the inhabitants of dwellings under study varied from 0.78 to 2.36 mSv, with an average of 1.61 mSv. The in situ gamma dose rate varied from 0.12 to 0.32 mSv/h.

Variation of indoor radon concentration and ambient dose equivalent rate in different outdoor and indoor environments

2016 ◽  
Vol 55 (2) ◽  
pp. 171-183 ◽  
Author(s):  
Zdenka Stojanovska ◽  
Blazo Boev ◽  
Zora S. Zunic ◽  
Kremena Ivanova ◽  
Mimoza Ristova ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Indoor Radon ◽  
Indoor Environments ◽  
Dose Equivalent ◽  
Indoor Radon Concentration ◽  
Equivalent Rate ◽  
Ambient Dose Equivalent ◽  
Ambient Dose

scholarly journals Recent extreme air temperature changes in Montenegro

2015 ◽  
Vol 95 (4) ◽  
pp. 53-66 ◽  
Author(s):  
Dragan Buric ◽  
Vladan Ducic ◽  
Jovan Mihajlovic ◽  
Jelena Lukovic ◽  
Jovan Dragojlovic
Keyword(s):  
Global Warming ◽  
Air Temperature ◽  
General Idea ◽  
Extreme Weather Events ◽  
Climate Indices ◽  
Temperature Extremes ◽  
Temperature Changes ◽  
Air Temperatures ◽  
Weather Events ◽  
The World

The studies show that the changes in intensity and frequency of the extreme weather events have been registered in many regions of the world. This paper gives an analysis of the change of 12 air temperature parameters, out of which 9 are climate indices. The indices suggested by WMO-CCL/CLIVAR have been used in order to investigate the changes in temperature extremes. The research related to the topic has been carried out by using the data from 23 meteorological stations for the 1951 - 2010 period and calculations have been done on the seasonal level. The results show that the maximum and minimum air temperatures, which have ?warmer values?, are becoming more frequent on the territory of Montenegro which corresponds to the general idea of global warming.

Simulation of indoor radon and ventilation systems in a scale model room to assess the contribution of high activity building materials to indoor radon. 

2021 ◽  
Author(s):  
Paola Tuccimei ◽  
Carlo Lucchetti ◽  
Gianfranco Galli ◽  
Michele Soligo
Keyword(s):  
Indoor Air ◽  
Building Materials ◽  
Tap Water ◽  
Indoor Radon ◽  
Ventilation System ◽  
Scale Model ◽  
Outdoor Air ◽  
Indoor Radon Concentration ◽  
Experimental Conditions ◽  
Model Room

<p>Indoor radon accumulation is considered the main source of human exposition to ionizing radiation. The main sources of indoor radon are soil gas, the building materials and tap water, especially when they are enriched in <sup>226</sup>Ra and <sup>232</sup>Th, which are the precursors of main radon isotopes: <sup>222</sup>Rn and <sup>220</sup>Rn, respectively.</p><p>In the frame of RESPIRE (Radon rEal time monitoring System and Proactive Indoor Remediation), a LIFE project funded by European Commission, a scale model-room of 62 cm x 50 cm x 35 cm (inner length x width x height) was manufactured with a very porous and highly radioactive lithoid ignimbrite to evaluate the contribution of building materials to indoor radon accumulation, simulating the effect of a ventilation system to reduce indoor radon levels.</p><p>A series of experiments was designed where either outdoor air was introduced in the model room or indoor air was extracted from the room, at different flow rates (from 0.15 to 0.82 liters per minute) to evaluate how air exchange and mixing affect indoor radon level. In the first group of tests, the introduction of outdoor air strongly reduced indoor radon concentration, with radon relative decrease directly proportional to the air flow. In the second set of experiments, the extraction of indoor air very moderately lowered radon levels. Finally, a modified version of Fick’s second law was used to model experimental data, describing how radon diffused through the very porous room walls under different experimental conditions.</p><p><strong> </strong></p><p> </p><p> </p>

Influence of Ventilation Rate on Indoor Radon Concentration in a Test Chamber

1994 ◽  
Vol 56 (1-4) ◽  
pp. 15-18 ◽  
Author(s):  
D. Capra ◽  
C. Silibello ◽  
G. Queirazza
Keyword(s):  
Radon Concentration ◽  
Building Materials ◽  
Indoor Radon ◽  
Methodological Approach ◽  
Test Chamber ◽  
Ventilation Rate ◽  
Outdoor Air ◽  
Indoor Radon Concentration ◽  
Remedial Actions ◽  
Underlying Soil

Abstract A methodological approach is proposed in order to identify the sources of indoor radon and the proper remedial actions to be undertaken in highly contaminated houses. The application of this methodology to a test chamber allows the evaluation of the following sources: building materials, outdoor air and underlying soil. Estimates are performed by both experimental techniques and mathematical modelling. Measurements carried out inside the test chamber indicate the dependence of radon concentration on ventilation and differential pressure between indoors and outdoors. The increase in ventilation induces the following effects on radon entry: an increase of entrance from outdoor air and a diminution of inflow from underlying crawlspace due to the rise of indoor pressure that inhibits the upward airflow from the crawlspace.

Review of Basic Statistical Analysis.

1982 ◽  
Vol 27 (11) ◽  
pp. 908-908
Author(s):  
William L. Hays
Keyword(s):  
Statistical Analysis ◽  
Basic Statistical Analysis

Distribution characteristics on indoor radon concentration of multiple-use facilities in Gwangju area

2019 ◽  
Vol 18 (2) ◽  
pp. 177-184 ◽  
Author(s):  
Min-jin Kim ◽  
Sang-su An ◽  
Min-cheol Cho ◽  
Se-il Park ◽  
Jong-min Kim ◽  
...  
Keyword(s):  
Radon Concentration ◽  
Indoor Radon ◽  
Distribution Characteristics ◽  
Multiple Use ◽  
Indoor Radon Concentration

PSYCHOLOGICAL FEATURES OF EDUCATION AND TOLERANCE IN STUDENTS

2018 ◽  
Vol 16 (1) ◽  
pp. 112-119
Author(s):  
VLADIMIR GLEB NAYDONOV
Keyword(s):  
Statistical Analysis ◽  
Training Program ◽  
Rich Diversity ◽  
Interethnic Differences ◽  
The World ◽  
The Rich ◽  
Correct Understanding ◽  
Psychological Features ◽  
Different Levels

The article considers the students’ tolerance as a spectrum of personal manifestations of respect, acceptance and correct understanding of the rich diversity of cultures of the world, values of others’ personality. The purpose of the study is to investgate education and the formation of tolerance among the students. We have compiled a training program to improve the level of tolerance for interethnic differences. Based on the statistical analysis of the data obtained, the most important values that are significant for different levels of tolerance were identified.

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