SVIBOR - Papers - project code: 1-03-008

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SVIBOR

SVIBOR - Collecting Data on Projects in Croatia


Published papers on project 1-03-008


Quoted papers: 15
Other papers: 10
Total: 25


  1. Type of paper: Paper in journal

    Title: 6. Radon dose in cellars during the war in Croatia

    Authors:
    Planinić, Josip (37444)
    Lokobauer, Nevenka
    Franić, Zdenko
    Bauman, Alica
    Journal: J. Radioanal. Nucl. Chem.,Letters
    Volume: 176
    Year: 1993
    Pages: from 92 to 101
    Number of references: 4
    Language: engleski
    Summary: During the war in 1991 and 1992, because of artillery bombardment, the citizens of Croatia have been forced to live underground in shelters and cellars and therefore they have been exposed to an additional radon radiation. Rn concentration in shelters (cellars) and dwellings of Osijek and Zagreb were measured by means of a silicon detector (Radhome) and also, at several locations, by an LR-115 nuclear track detector. Estimated monthly radon exposures in dwellings and cellars of Osijek or Zagreb were (2.88ń1.58)*10(4) Bq h m(-3) and (6.62ń3.17)*10(4) Bq h m(-3), respectively, or (1.94ń0.72)*10(4) Bq h m(-3) and (7.46ń7.78)*10(4) Bq h m(-3). Inhabitants of Osijek and Zagreb have received, on the average, the effective dose equivalent of 4.1 and 2.6 mSv y(-1), respectively.

  2. Type of paper: Paper in journal

    Title: 7. More about track etching statistics

    Authors:
    Planinić, Josip (37444)
    Journal: J. Radioanal. Nucl. Chem.,Letters
    Volume: 175
    Year: 1993
    Pages: from 95 to 101
    Number of references: 4
    Language: engleski
    Summary: Statistical errors of the track etching method were investigated by using the LR-115 nuclear track detector and visual microscopic counting. In the experiment, four persons counted tracks of the same detector and the analysis of variance was applied to the respective means and standard deviations. Another experiment was performed with ten detectors exposed to air in the same room; after standard etching and counting, the relative error of the detector track density was obtained as 11.2 %. Taking into account the errors of the detector sensitivity coefficient and background, the total relative error of the track etching method was 19.5 % in case of measurements of the indoor radon concentration of 8.2 Bq m(-3).

  3. Type of paper: Paper in journal

    Title: 8. Radon concentrations in kindergartens of Osijek and Ljubljana

    Authors:
    Planinić, Josip (37444)
    Kobal, Ivan
    Vaupotič, Janja
    Journal: J. Radioanal. Nucl. Chem.,Letters
    Volume: 175
    Year: 1993
    Pages: from 103 to 111
    Number of references: 6
    Language: engleski
    Summary: Indoor radon concentrations in the kindergartens of Osijek, Croatia, have been measured with alpha scintillation cells, LR-115 nuclear track detectors, as well as a Radhome semiconductor detector. Average values of 50.2,43.7 and 47 Bq/m(3) were obtained, respectively. Under the worst conditions, the annual radon effective dose equivalent was 10 mSv y(-1). Using bare and filtered LR-115 detectors, the average equilibrium factor was assessed as 0.36 indoors. Measurements of the gamma dose rate in the kindergartens did not show any significant correlation with the radon cincentration. Indoor radon concentrations in the kindergartens of Ljubljana, Slovenija, measured by scintillation cells had an arithmetic mean and standard deviation of 228 and 143 Bq/m(3), respectively.

  4. Type of paper: Paper in journal

    Title: 11. Calibration coefficient of the SSNTD and equilibrium factor for radon

    Authors:
    Planinić, Josip (37444)
    Vuković, Branko
    Journal: J. Radioanal. Nucl. Chem.,Letters
    Volume: 175
    Year: 1993
    Pages: from 333 to 337
    Number of references: 4
    Language: engleski
    Summary: Disintegration, ventilation and deposition were considered as removal processes of the radon and its short-lived daughters in air and the respective concentration equations were applied. Calibration coefficient (K-f) of the solid state nuclear track detector (SSNTD) LR-115 for radon and the equilibrium factor (F) were related to track densities of the bare detector (D) and the filtered one (D-0). A useful relationship between K-f, F and detector sensitivity coefficient (k) was derived. Using the calibrated value k=3.29*10(-3) m, the exposed detectors gave the average values of the equilibrium factor, calibration coefficient and indoor radon concentration of a single house living room in Osijek 0.46, 142.3 m(-1) and 37.8 Bq m(-3), respectively.

  5. Type of paper: Paper in proceedings

    Title: 18. Efficiency of the radon detection

    Authors:
    Planinić, Josip (37444)
    Proceedings title: Zbornik radova XVI. Jugoslavenski simpozij o zaštiti od zračenja
    Language: hrvatski
    Place: Neum
    Year: 1991
    Pages: from 322 to 325
    Meeting: Second International Workshop on Radon Monitoring in Radioprotection
    Held: from 05/28/91 to 05/31/91
    Summary: The Rn activity concentrations in air were measured by the LR-115 nuclear track detector. Using the calibrated sensitivity coefficient of the detector (k= 0.346 cm), the critical detection angel was calculated (éc= 31ř). The detector efficiency for Am(241) was near 32 % for energy region of (1 ö 3.7) MeV, but the Rn one was 23.8 %.

  6. Type of paper: Paper in proceedings

    Title: 19. Calibration coefficient of the SSNTD and equilibrium factor for radon

    Authors:
    Planinić, Josip (37444)
    Vuković, Branko
    Proceedings title: Proc. of the Fifth International Symposium on the Natural Radiation Environment
    Language: engleski
    Place: Salzburg, Austrija
    Year: 1991
    Pages: from 8 to 8
    Meeting: Fifth International Symposium on the Natural Radiation Environment
    Held: from 09/22/91 to 09/28/91
    Summary: Disintegration, ventilation and deposition were considered as removal processes of the radon and its short-lived daughters in air and the respective concentration equations were applied. Calibration coefficient (K-f) of the solid state nuclear track detector (SSNTD) LR-115 for radon and the equilibrium factor (F) were related to track densities of the bare detector (D) and the filtered one (D-0). Theoretical curves between the air exchange rate (L) and track density ratio (D/D-0) as well as between F and L were obtained. Also, a useful relationship of the calibration coefficient and detector sensitivity (k) was derived. The detector sensitivity was calibrated by means of a radon chamber contained crushed uranium ore and by scintillation cells which gave k=3.29*10(-3) m, by standard etching conditions (10 % NaOH, 60řC, 120 minutes etching time, visual counting of microscopic tracks). The detector efficiency was determined experimentaly using a known Am(241) source but in the alpha particle energy region of (0.5 ö 4) MeV. During two years, the exposed detectors gave the average values of the equilibrium factor, calibration coefficient and indoor radon concentration of a single house living room in Osijek 0.46, 142.3 m(-1) and 37.8 Bq m(-3), respectively.

  7. Type of paper: Paper in proceedings

    Title: 20. Radon dose equivalent in dwellings and shelters during the war in Croatia

    Authors:
    Planinić, Josip (37444)
    Lokobauer, Nevenka
    Franić, Zdenko
    Bauman, Alica
    Proceedings title: Zbornik radova Prvog simpozija Hrvatskog društva za zaštitu od zračenja
    Language: hrvatski
    Place: Zagreb
    Year: 1992
    Pages: from 315 to 319
    Meeting: Prvi simpozij Hrvatskog društva za zaštitu od zračenja
    Held: from 11/24/92 to 11/26/92

  8. Type of paper: Paper in proceedings

    Title: 22. Radon distribution in dwellings

    Authors:
    Planinić, Josip (37444)
    Faj, Zdravko (86606)
    Šuveljak-Šipalo, Božica (86766)
    Editors
    Franić, Zdenko
    Kubelka, Dragan
    Proceedings title: Zbornik drugog simpozija hrvatskog društva za zaštitu od zračenja
    Language: hrvatski
    Place: Zagreb
    Year: 1994
    Pages: from 305 to 308
    Meeting: Drugi simpozij Hrvatskog društva za zaštitu od zračenja
    Held: from 11/23/94 to 11/25/94
    Summary: Radon concentration measurements, performed with the Radhome silicon detector and scintillation cells, independetly, inside a flat of the dwelling-house with four floors (Sjenjak), showed an unusual radon distribution within the R2 room where the east measurement positions had radon concentrations in the air significantly higher than the ones on the west side of the room. Similar radon distribution was registerd in the basement just bellow the R2 room. Therefore one could conclude a main source of the radon was in the soil where from the radon diffused through the concrete floor into the basement then to the R2 room. An anomalous radon distribution in the single house (Retfala), where the radon concentration in the basement was near a factor of 4 lower than the one of the living room on the first floor during a few days, was explained by strong variations of the atmospheric pressure. Otherwise the average annual radon concentrations were 165 and 100 Bq/m(3) in the basement of the single house and living room on the first floor, respectively.

  9. Type of paper: Paper in proceedings

    Title: 23. Radon - source of radiation in the atmosphere

    Authors:
    Faj, Zdravko (86606)
    Planinić, Josip (37444)
    Šuveljak-Šipalo, Božica (86766)
    Vuković, Branko
    Proceedings title: Drugi zbornik ekoloških radova - Problemi u zaštiti okoliša Osijeka
    Language: hrvatski
    Place: Osijek
    Year: 1994
    Pages: from 27 to 32
    Summary: The in-breathing of radon and its short-living descendants represents half of the natural radioactivity that man consumes from natural sources. Radon is breathed in as gas within the air and it affects our well-being. Radon is the source of ionizing radiation and can be decreased, therefore it is necesssary to know its concentration in the air, as well as the ways how to diminish its presence in our enviroment. The measuring of radon concentration has been done at several places in Osijek and Tiborjanci since 1986, and it was performed in nursery schools as well as in the primary schools. During the war 1991/1992, the measuring was performed in flats, basements and shelters in Osijek and in Zagreb.

  10. Type of paper: Paper in proceedings

    Title: 21. Through investigation of indoor radon in a kindergarten with elevated levels

    Authors:
    Vaupotič, Janja
    Planinić, Josip (37444)
    Kobal, Ivan
    Editors
    Franić, Zdenko
    Franić, Zdenko
    Kubelka, Dragan
    Proceedings title: Zbornik radova drugog simpozija Hrvatskog društa za zaštitu od zračenja
    Language: engleski
    Place: Zagreb
    Year: 1994
    ISBN/ISSN: .
    Pages: from 309 to 313
    Meeting: Drugi simpozij Hrvatskog društva za zaštitu od zračenja
    Held: from 11/23/94 to 11/25/94
    Summary: Among the total of 730 kindergartens in Slovenia surveyed for indoor radon concentrations by Lucas cells under closed conditions, a kindergarten with a value of 900 Bq/m(3) was selected for additional investigations. To obtain average radon concentrations and equilibrium factors, track-etch detectors were exposed all the year round. An annual dose equivalent to the bronchi of a five year child of 26 mSvy(-1) was estimated.

  11. Type of paper: Paper in proceedings

    Title: 24. An example of elevated indoor radon concentrations in a kindergarten in Slovenia

    Authors:
    Vaupotič, Janja
    Jovanovič, Peter
    Planinić, Josip (37444)
    Kobal, Ivan
    Proceedings title: Proc. of the Int.Conf.on "Radiation and Society:Comprehending Radiation Risks"
    Language: engleski
    Place: Paris, France
    Year: 1994
    ISBN/ISSN: .
    Meeting: Conference on "Radiation and Society:Comprehending Radiation Risks"
    Held: from 10/24/94 to 10/28/94
    Summary: In a survey of indoor radon in kindergartens and schools in Slovenia (about 1600), instantaneous air concentrations were obtained under closed conditions in winter time by modified Lucas cells /1/. In 2,0 % of all cases (33 buildings), indoor radon concentrations exceed 1000 Bq/m(3) /2,3/.

  12. Type of paper: Paper in proceedings

    Title: 16.Radon measurements in kindergartens of Osijek

    Authors:
    Planinić, Josip (37444)
    Vaupotič, Janja
    Kobal, Ivan
    Proceedings title: Proc. of the Second International Workshop on Radon Monitoring in Radioprotectio
    Language: engleski
    Place: Trieste, Italija
    Year: 1991
    Meeting: Second International Workshop on Radon Monitoring in Radioprotection
    Held: from 11/27/91 to 12/04/91
    Summary: Indoor radon concentrations in the kindergartens of Osijek were measured with alpha scintillation cells, LR-115 nuclear track detectors, as well as Radhome semiconductor detector, and average values of 50.2, 43.7 and 47 Bq/m(3) were obtained respectively. Under the worst conditions, the annual radon effective dose equivalent was 10 mSv/y. Using the bare and filtered LR-115 detectors, the average equilibrium factor was assessed as 0.36, indoors. Measurements of the gamma dose rate in the kindergartens did not show any sigmificant correlation with the radon concentration in the air.

  13. Type of paper: Invited lecture

    Title: Radon measurement by two SSNT detectors
    Institution: Jožef Štefan Institut
    Year: 1991


  14. Type of paper: Invited lecture

    Title: The equilibrium factor for radon
    Institution: Universitaet in Goettingen



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