Articles with "activity concentration" as a keyword



Impact of ventilation systems and energy savings in a building on the mechanisms governing the indoor radon activity concentration.

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Published in 2019 at "Journal of environmental radioactivity"

DOI: 10.1016/j.jenvrad.2017.11.023

Abstract: For a given radon potential in the ground and a given building, the parameters affecting the indoor radon activity concentration (IRnAC) are indoor depressurization of a building and its air change rate. These parameters depend… read more here.

Keywords: indoor radon; ventilation; activity concentration; radon activity ... See more keywords

Half a century of Krypton-85 activity concentration measured in air over Central Europe: Trends and relevance for dating young groundwater.

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Published in 2019 at "Journal of environmental radioactivity"

DOI: 10.1016/j.jenvrad.2019.04.014

Abstract: For almost half a century weekly samples for the measurement of krypton-85 (85Kr) activity concentrations in surface air have been collected by the Bundesamt für Strahlenschutz (BfS), Germany. Sampling started at Freiburg (230m asl) in… read more here.

Keywords: 85kr activity; central europe; activity concentration; half century ... See more keywords

Land use types control solid wash-off rate and entrainment coefficient of Fukushima-derived 137Cs, and their time dependence.

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Published in 2019 at "Journal of environmental radioactivity"

DOI: 10.1016/j.jenvrad.2019.105990

Abstract: Understanding solid 137Cs wash-off in sediment sources is important for predicting radiological risks in zones contaminated by the Fukushima Dai-ichi Nuclear Power Plant accident. Yoshimura et al. (2015) studied solid 137Cs wash-off using soil erosion… read more here.

Keywords: land; sediment; wash; activity concentration ... See more keywords
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Radionuclide activity concentration in soil, granites and water in a fluorosis endemic area of India: An oral health perspective.

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Published in 2020 at "Journal of oral biology and craniofacial research"

DOI: 10.1016/j.jobcr.2020.05.003

Abstract: Background The idea that hilly areas have a high background radiation which in turn is linked to dental fluorosis is widely held by many in India. There is little evidence to confirm this. Objective The… read more here.

Keywords: radionuclide; fluorosis; activity concentration; soil ... See more keywords
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Radiological Investigation of High Background Radiation Areas

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-15201-2

Abstract: In this paper, we used the Hyper-Pure Germanium (HPGe) detector to measure 30 samples which are collected from north of Nile Delta near Rosetta beach in Egypt. The activity of primordial radionuclides, such as 238U,… read more here.

Keywords: radium equivalent; external hazard; hazard indices; activity concentration ... See more keywords

Measurements of Natural Radioactivity in Soil Samples from Southern Ontario and Estimation of the Activity Concentration Index in Building Material of Local Origin.

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Published in 2021 at "Radiation protection dosimetry"

DOI: 10.1093/rpd/ncab164

Abstract: This paper reports on the measurement of natural radionuclides in soil samples collected from southern Ontario, Canada. The mean activity concentrations in soil are 28, 28 and 641 Bq/kg for 226Ra, 232Th and 40K, respectively. Assuming… read more here.

Keywords: soil samples; origin; activity concentration; activity ... See more keywords

A preliminary study on determination of radioactivity levels and estimation of the annual effective dose in dried fruits consumed in Albania.

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Published in 2024 at "Radiation protection dosimetry"

DOI: 10.1093/rpd/ncad320

Abstract: This work aimed to support Albania's food safety monitoring regime. In this context, the natural and artificial radioactivity was measured in 20 samples of dried fruits collected randomly in different markets of Tirana. The activity… read more here.

Keywords: dose dried; activity concentration; dried fruits; 40k 226ra ... See more keywords

Radon in the Exhaled Air of Patients in Radon Therapy

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Published in 2017 at "Radiation Protection Dosimetry"

DOI: 10.1093/rpd/ncx153

Abstract: In the Gastein valley, numerous facilities use radon for the treatment of various diseases either by exposure to radon in air or in radon rich thermal water. In this study, six test persons were exposed… read more here.

Keywords: water; radon; radon activity; air ... See more keywords

DEVELOPMENT AND TESTING OF DEVICES FOR CONTINUOUS MONITORING OF RADON ACTIVITY CONCENTRATION IN WATERS.

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Published in 2020 at "Radiation protection dosimetry"

DOI: 10.1093/rpd/ncz243

Abstract: Continuous radon measurement in waters is an appropriate tool for the study of its variations as well as for the clarification and understanding of the factors that cause these changes. In addition, sudden changes in… read more here.

Keywords: continuous monitoring; activity concentration; radon activity;

Changes in alpha-amylase activity, concentration and isoforms in pigs after an experimental acute stress model: an exploratory study

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Published in 2018 at "BMC Veterinary Research"

DOI: 10.1186/s12917-018-1581-2

Abstract: BackgroundSalivary alpha-amylase (sAA) is considered a non-invasive biomarker of acute stress that can be evaluated by changes in activity and concentration, and also by changes in its isoforms, although this last way of evaluation has… read more here.

Keywords: saa; acute stress; activity concentration; concentration ... See more keywords

Comparison of Otsu and an adapted Chan–Vese method to determine thyroid active volume using Monte Carlo generated SPECT images

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Published in 2024 at "EJNMMI Physics"

DOI: 10.1186/s40658-023-00609-9

Abstract: The Otsu method and the Chan–Vese model are two methods proven to perform well in determining volumes of different organs and specific tissue fractions. This study aimed to compare the performance of the two methods… read more here.

Keywords: activity concentration; method; chan vese; usepackage ... See more keywords