LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 38

Search options

  1. Article: Indoor and outdoor in situ high-resolution gamma radiation measurements in urban areas of Cyprus.

    Svoukis, E / Tsertos, H

    Radiation protection dosimetry

    2007  Volume 123, Issue 3, Page(s) 384–390

    Abstract: In situ, high-resolution, gamma-ray spectrometry of a total number of 70 outdoor and 20 indoor representative measurements were performed in preselected, common locations of the main urban areas of Cyprus. Specific activities and gamma absorbed dose ... ...

    Abstract In situ, high-resolution, gamma-ray spectrometry of a total number of 70 outdoor and 20 indoor representative measurements were performed in preselected, common locations of the main urban areas of Cyprus. Specific activities and gamma absorbed dose rates in air due to the naturally occurring radionuclides of (232)Th and (238)U series, and (40)K are determined and discussed. Effective dose rate to the Cyprus population due to terrestrial gamma radiation is derived directly from this work. The results obtained outdoors match very well with those derived previously by high-resolution gamma spectrometry of soil samples, which were collected from the main island bedrock surface. This implies that the construction and building materials in urban areas do not affect the external gamma dose rate; thus they are mostly of local origin. Finally, the indoor/outdoor gamma dose ratio was found to be 1.4 +/- 0.5.
    MeSH term(s) Air Pollutants, Radioactive/analysis ; Air Pollution, Indoor/analysis ; Air Pollution, Indoor/statistics & numerical data ; Cities/statistics & numerical data ; Gamma Rays ; Greece ; Radiation Monitoring/methods ; Reproducibility of Results ; Risk Assessment/methods ; Risk Factors ; Sensitivity and Specificity
    Chemical Substances Air Pollutants, Radioactive
    Language English
    Publishing date 2007
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 225912-6
    ISSN 1742-3406 ; 0144-8420
    ISSN (online) 1742-3406
    ISSN 0144-8420
    DOI 10.1093/rpd/ncl159
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2009: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article ; Online: Gamma radiation measurements and dose rates in commonly used building materials in Cyprus.

    Michael, F / Parpottas, Y / Tsertos, H

    Radiation protection dosimetry

    2010  Volume 142, Issue 2-4, Page(s) 282–291

    Abstract: A first comprehensive study is presented on radioactivity concentrations and dose rates in 87 commonly used materials, manufactured or imported in Cyprus, for building purposes. The natural radioactivity of (40)K, (232)Th, (238)U and (226)Ra is ... ...

    Abstract A first comprehensive study is presented on radioactivity concentrations and dose rates in 87 commonly used materials, manufactured or imported in Cyprus, for building purposes. The natural radioactivity of (40)K, (232)Th, (238)U and (226)Ra is determined using high-resolution gamma-ray spectroscopy. The respective dose rates and the associated radiological effect indices are also calculated. A comparison of the measured specific activity values with the corresponding world average values shows that most of them are below the world average activity values. The annual indoor effective dose rates received by an individual from three measured imported granites and four measured imported ceramics are found to be higher than the world upper limit value of 1 mSv y(-1). Hence, these materials should have a restricted use according to their corresponding calculated activity concentration index values and the related EC 1999 guidelines.
    MeSH term(s) Construction Materials/analysis ; Cyprus ; Humans ; Potassium Radioisotopes/analysis ; Radiation Monitoring ; Radium/analysis ; Spectrometry, Gamma ; Thorium/analysis ; Uranium/analysis
    Chemical Substances Potassium Radioisotopes ; Uranium (4OC371KSTK) ; Thorium (60YU5MIG9W) ; Radium (W90AYD6R3Q)
    Language English
    Publishing date 2010-12
    Publishing country England
    Document type Journal Article
    ZDB-ID 225912-6
    ISSN 1742-3406 ; 0144-8420
    ISSN (online) 1742-3406
    ISSN 0144-8420
    DOI 10.1093/rpd/ncq193
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2009: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Book ; Online: Systematic grid-wise radon concentration measurements and first radon map in Cyprus

    Theodoulou, G. / Tsertos, H. / Parpottas, Y.

    2012  

    Abstract: A systematic study of the indoor airborne radon concentration in the central part of the Nicosia district was conducted, using high-sensitivity active radon portable detectors of the type "RADIM3A". From a total of 108 measurements in 54 grids of 1 km^2 ... ...

    Abstract A systematic study of the indoor airborne radon concentration in the central part of the Nicosia district was conducted, using high-sensitivity active radon portable detectors of the type "RADIM3A". From a total of 108 measurements in 54 grids of 1 km^2 area each, the overall mean value is 20.6 \pm 13.2 Bq m^-3 (A.M.\pm S.D.). That is almost twice less than the corresponding average worldwide value. The radon concentration levels in drinking water were also measured in 24 sites of the residential district, using the high-sensitivity radon detector of the type "RADIM3W". The mean value obtained from these measurements is 243.8 \pm 224.8 mBq L^-1, which is relatively low compared to the corresponding internationally accepted level. The associated annual effective dose rates to each measurement were also calculated and compared to the corresponding worldwide values. From the geographical coordinates of the measuring sites and the corresponding radon concentration values, the digital radon map of the central part of the Nicosia district was constructed for the first time, by means of the ArcMap software package.

    Comment: 21 pages including 2 tables and 8 figures
    Keywords Physics - Geophysics ; Nuclear Experiment ; Physics - Medical Physics
    Subject code 333
    Publishing date 2012-06-26
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Book: Search for resonant Bhabha scattering at MeV energies

    Tsertos, H

    (Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 89-33)

    1989  

    Institution Gesellschaft für Schwerionenforschung
    Author's details H. Tsertos. Gesellschaft für Schwerionenforschung mbH, Darmstadt
    Series title Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 89-33
    Language English
    Size 13 S
    Publishing place Darmstadt
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Book: Comments on "Electron peaks in e+ + Th, U and Ta interactions"

    Tsertos, H

    (Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 88-59)

    1988  

    Institution Gesellschaft für Schwerionenforschung
    Author's details H. Tsertos. Gesellschaft für Schwerionenforschung mbH, Darmstadt
    Series title Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 88-59
    Language English
    Size 5 S
    Publishing place Darmstadt
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  6. Article: A comprehensive study of natural gamma radioactivity levels and associated dose rates from surface soils in cyprus.

    Tzortzis, M / Svoukis, E / Tsertos, H

    Radiation protection dosimetry

    2004  Volume 109, Issue 3, Page(s) 217–224

    Abstract: A survey was carried out to determine activity concentration levels and associated dose rates from the naturally occurring radionuclides 232Th, 238U and 40K, in the various geological formations of Cyprus, by means of high-resolution gamma ray ... ...

    Abstract A survey was carried out to determine activity concentration levels and associated dose rates from the naturally occurring radionuclides 232Th, 238U and 40K, in the various geological formations of Cyprus, by means of high-resolution gamma ray spectrometry. A total of 115 representative soil samples were collected from all over the bedrock surface of the island, based on the different lithological units of the study area, sieved through a fine mesh, sealed in 1000 ml plastic Marinelli beakers and measured in the laboratory with respect to gamma radioactivity for a counting time of 18-h each. From the measured spectra, activity concentrations were determined for 232Th (range from 1.0 x 10(-2) to 39.8 Bq kg(-1)), 238U (from 1.0 x 10(-2) to 39.3 Bq kg(-1)) and (40)K (from 4.0 x 10(-2) to 565.8 Bq kg(-1)). Gamma absorbed dose rates in air outdoors were calculated to be in the range from 1.1 x 10(-2) to 51.3 nGy h(-1), depending on the geological features, with an overall mean value of 8.7 nGy h(-1) and a standard deviation of 8.4 nGy h(-1). This value is by a factor of about seven below the corresponding population-weighted world-averaged value of 60 nGy h(-1) and one of the lowest that has been reported from similar investigations worldwide. Assuming a 20% occupancy factor, the corresponding effective dose rates outdoors equivalent to the population were calculated to be between 1.3 x 10(-2) and 62.9 microSv y(-1), with an arithmetic mean value of 10.7 microSv y(-1) and a standard deviation of 10.3 microSv y(-1).
    MeSH term(s) Background Radiation ; Cyprus ; Dose-Response Relationship, Radiation ; Gamma Rays ; Potassium Radioisotopes ; Soil ; Soil Pollutants, Radioactive ; Spectrometry, Gamma ; Spectrophotometry ; Thorium ; Uranium
    Chemical Substances Potassium Radioisotopes ; Soil ; Soil Pollutants, Radioactive ; Uranium (4OC371KSTK) ; Thorium (60YU5MIG9W)
    Language English
    Publishing date 2004
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 225912-6
    ISSN 1742-3406 ; 0144-8420
    ISSN (online) 1742-3406
    ISSN 0144-8420
    DOI 10.1093/rpd/nch300
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    In stock of ZB MED Cologne/Königswinter

    Zs.A 2009: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  7. Article: Indoor radon (222Rn) concentration measurements in Cyprus using high-sensitivity portable detectors.

    Anastasiou, T / Tsertos, H / Christofides, S / Christodoulides, G

    Journal of environmental radioactivity

    2003  Volume 68, Issue 2, Page(s) 159–169

    Abstract: Using high-sensitivity radon ((222)Rn) portable detectors (passive electronic devices of the type RADIM3), the airborne (222)Rn concentration in the interior of various Cypriot buildings and dwellings was measured. For each preselected building and ... ...

    Abstract Using high-sensitivity radon ((222)Rn) portable detectors (passive electronic devices of the type RADIM3), the airborne (222)Rn concentration in the interior of various Cypriot buildings and dwellings was measured. For each preselected building and dwelling, a calibrated detector was put into a closed room, and the (222)Rn concentration was registered in sampling intervals of 2 to 4 h for a total counting time of typically 48 h. (222)Rn activity concentrations were found to be in the range of 6.2 to 102.8 Bq m(-3), with an overall arithmetic mean value of (19.3+/-14.7) Bq m(-3). This value is by a factor of two below the world average (population-weighted) value of 39 Bq m(-3). The total annual effective dose equivalent to the Cypriot population was calculated to be between 0.16 and 2.6 mSv with an overall arithmetic mean value of (0.49+/-0.37) mSv.
    MeSH term(s) Air Pollutants, Radioactive/analysis ; Air Pollution, Indoor/analysis ; Calibration ; Cyprus ; Environmental Monitoring/instrumentation ; Radon/analysis ; Sensitivity and Specificity
    Chemical Substances Air Pollutants, Radioactive ; Radon (Q74S4N8N1G)
    Language English
    Publishing date 2003
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1483112-0
    ISSN 1879-1700 ; 0265-931X
    ISSN (online) 1879-1700
    ISSN 0265-931X
    DOI 10.1016/S0265-931X(03)00052-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Book: Experimental exclusion of neutral resonances in Bhabha scattering at MeV energies

    Tsertos, H

    decicated to P. Armbruster on the Occasion of his 60th birthday

    (Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 91-21)

    1991  

    Institution Gesellschaft für Schwerionenforschung
    Author's details Tsertos, H. u.a. [Mitarb.]. Gesellschaft für Schwerionenforschung mbH, Darmstadt
    Series title Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 91-21
    Language English
    Size 12 S
    Publishing place Darmstadt
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  9. Book: Systematic studies of positron production in heavy-ion collisions near the Coulomb barrier

    Tsertos, H

    (Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 91-22)

    1991  

    Institution Gesellschaft für Schwerionenforschung
    Author's details Tsertos, H. u.a. [Mitarb.]. Gesellschaft für Schwerionenforschung mbH, Darmstadt
    Series title Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 91-22
    Language English
    Size 50 S
    Publishing place Darmstadt
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Book: High-sensitivity measurements of the excitation function for Bhabha scattering at MeV energies

    Tsertos, H

    (Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 89-21)

    1989  

    Institution Gesellschaft für Schwerionenforschung
    Author's details Tsertos, H. u.a. [Mitarb.]. Gesellschaft für Schwerionenforschung mbH, Darmstadt
    Series title Preprint. Gesellschaft für Schwerionenforschung mbH, GSI ; 89-21
    Language English
    Size 47 S
    Publishing place Darmstadt
    Document type Book
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top