Indoor radon and radon daughters survey at Campinas-Brazil using CR-39: First results

Abstract Results and conclusions of interlaboratory comparison of indoor radon in 2015 in Serbia are presented. The participants were three accredited laboratories from Serbia: Serbian Institute of Occupational Health “Dr Dragomir Karajović”, Laboratory for Radioactivity and Dose Measurements at the Faculty of Sciences, University of Novi Sad and Radiation and Environmental Protection Department, Vinča Institute of Nuclear Science. The laboratories make use of the same method for radon measurement, using charcoal canisters according to US Environmental Protection Agency (EPA) protocol 520/5-87-005. Calibration of detection efficiency was performed using EPA radium standard. Radon activity concentrations were determined on the basis of the intensity of short-living radon daughters, 214Bi and 214Pb, gamma lines. The results of intercomparison were evaluated by using the u-test, which was calculated according to the International Atomic Energy Agency criteria. In this paper, not only limitations but also the advantages and possibilities of application of this method for measuring levels of human exposure to radon are discussed.

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Soil Gas Radon - A Source for Indoor Radon Daughters

Radiation Protection Dosimetry ◽

10.1093/oxfordjournals.rpd.a082961 ◽

1984 ◽

Vol 7 (1-4) ◽

pp. 49-54 ◽

Cited By ~ 48

Author(s):

G. Åkerblom ◽

P. Andersson ◽

B. Clevensjö

Keyword(s):

Indoor Radon ◽

Soil Gas ◽

Soil Gas Radon ◽

Radon Daughters

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Detailed Behaviour of Indoor Radon Daughters Focused on Effectiveness of an Air Cleaner

Radiation Protection Dosimetry ◽

10.1093/oxfordjournals.rpd.a081610 ◽

1992 ◽

Vol 45 (1-4) ◽

pp. 589-592 ◽

Cited By ~ 3

Author(s):

H. Kojima ◽

S. Abe ◽

K. Fujitaka

Keyword(s):

Indoor Radon ◽

Air Cleaner ◽

Radon Daughters

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Comparison of Two Methods for Investigating Indoor Radon Daughters

Radiation Protection Dosimetry ◽

10.1093/oxfordjournals.rpd.a080287 ◽

1988 ◽

Vol 24 (1-4) ◽

pp. 281-284 ◽

Cited By ~ 2

Author(s):

H. Vanmarcke ◽

A. Reineking ◽

J. Porstendörfer ◽

F. Raes

Keyword(s):

Indoor Radon ◽

Radon Daughters

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Detailed Behaviour of Indoor Radon Daughters Focused on Effectiveness of an Air Cleaner

Radiation Protection Dosimetry ◽

10.1093/rpd/45.1-4.589 ◽

1992 ◽

Vol 45 (1-4) ◽

pp. 589-592 ◽

Cited By ~ 3

Author(s):

H. Kojima ◽

S. Abe ◽

K. Fujitaka

Keyword(s):

Indoor Radon ◽

Air Cleaner ◽

Radon Daughters

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Comparison of Two Methods for Investigating Indoor Radon Daughters

Radiation Protection Dosimetry ◽

10.1093/rpd/24.1-4.281 ◽

1988 ◽

Vol 24 (1-4) ◽

pp. 281-284

Author(s):

H. Vanmarcke ◽

A. Reineking ◽

J. Porstendörfer ◽

F. Raes

Keyword(s):

Indoor Radon ◽

Radon Daughters

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Discussion of the Oblique Rotator Model Cases Of 108 Aqr and x Serp.

International Astronomical Union Colloquium ◽

10.1017/s0252921100080891 ◽

1976 ◽

Vol 32 ◽

pp. 577-588

Author(s):

C. Mégessier ◽

V. Khokhlova ◽

T. Ryabchikova

Keyword(s):

Mathematical Formulation ◽

The Other ◽

Rotator Model ◽

Oblique Rotator ◽

First Results

My talk will be on the oblique rotator model which was first proposed by Stibbs (1950), and since received success and further developments. I shall present two different attempts at describing a star according to this model and the first results obtained in the framework of a Russian-French collaboration in order to test the precision of the two methods. The aim is to give the best possible representation of the element distributions on the Ap stellar surfaces. The first method is the mathematical formulation proposed by Deutsch (1958-1970) and applied by Deutsch (1958) to HD 125248, by Pyper (1969) to α2CVn and by Mégessier (1975) to 108 Aqr. The other one was proposed by Khokhlova (1974) and used by her group.

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