Results 171 to 180 of about 16,232 (191)

226Ra in some Croatian rivers

2007
The study was conducted by the Radiation Protection Unit of the Institute for Medical Research and Occupational Health in Zagreb as a part of an extensive monitoring program of the Croatian environment. Croatia is a water-rich country. Rivers in Croatia are important sources of water supply along with underground water, wells and technical water supply
Marović, Gordana, Petrinec, Branko, Bituh, Tomislav   +2 more
openaire   +3 more sources

VIŠEGODIŠNJA IZLOŽENOST 226Ra PUTEM PIJENJA VODE

2005
This paper presents a method of calculating the 226Ra effective dose following continuous intake of water. In contrast to other authors who calculated the effective dose based on a single intake of annual amount of water (i.e. 730 L ingested at once) this paper includes continuous intake of 2L of water per day.
Vrtar, Mladen, Marović, Gordana, Bronzović, Maja   +2 more
openaire   +1 more source

High-precision measurement of oceanic 226Ra

Marine Chemistry, 1984
Abstract A system capable of oceanic 226 Ra measurements with a precision of ±1% is described, which represents an improvement of approximately a factor of three over existing techniques. 222 Rn grown-in from 226 Ra decay in 14-l seawater samples is quantitatively transferred to, and measured in, proportional gas counters.
Peter Schlosser, Monika Rhein, Wolfgang Roether, Bernd Kromer   +3 more
openaire   +1 more source

Thermal-neutron induced fission of 226Ra

Journal of Inorganic and Nuclear Chemistry, 1976
226Ra was irradiated by thermal neutrons, and fission events in coincidence were searched for by using two surface-barrier detectors placed face-to-face to each other. No meaningful number of events could be observed, and the upper limit for the fission cross section was set to be of the order of a few microbarns.
Hiromichi Nakahara, Minoru Yanokura, Yoshihiro Nakagome, Tetsuo Hashimoto   +3 more
openaire   +1 more source

Radon emanometric technique for 226Ra estimation

Journal of Radioanalytical and Nuclear Chemistry, 2010
Studies on natural background radiation show that the major contribution of radiation dose received by population is through inhalation pathway vis-a-vis contribution from radon (222Rn) gas. The immediate parent of radon being radium (226Ra), it is imperative that radium content is measured in the various matrices that are present in the environment ...
Mandakini Maharana, K. P. Eappen, D. Sengupta   +2 more
openaire   +1 more source

Automated measurement of 224Ra and 226Ra in water

Applied Radiation and Isotopes, 2007
We present a new simple approach for automated, non-destructive measurement of the alpha-emitting radium isotopes ((223)Ra, (224)Ra, and (226)Ra) in water based on the emanation of their respective radon daughters ((219)Rn, (220)Rn, and (222)Rn). The method combines the high adsorption uptake of MnO(2) Resin for radium (K(d)=2.4 x 10(4)ml/g) over a ...
N, Dimova, W C, Burnett, E P, Horwitz, D, Lane-Smith   +3 more
openaire   +2 more sources

226Ra in the western Indian Ocean

Earth and Planetary Science Letters, 1987
Abstract 226 Ra profiles have been measured in the western Indian Ocean as part of the 1977–1978 Indian Ocean GEOSECS program. These profiles show a general increase in deep and bottom water Ra concentration from the Circumpolar region to the Arabian Sea.
openaire   +1 more source

226Ra i 228Ra u rijekama Hrvatske

2008
Results of 226Ra and 228Ra in Croatian river waters are presented in this paper. The presence of natural radionuclides in the Croatian rivers emphasizes the need for continuous monitoring. 226Ra and 228Ra were chosen as a possible source of human exposure to radioactivity due to their high radio-toxicity.
Bituh, Tomislav, Petrinec, Branko, Marović, Gordana, Senčar, Jasminka, Gospodarić, Iva   +4 more
openaire   +1 more source

226Ra u flaširanim vodama hrvatskih proizvođača

2003
Production of bottled water in Croatia largely follows European trends. Natural spring or well waters contain natural radionuclides, especially members of naturally occurring uranium decay series. Higher concentration levels of radionuclides can have negative impact on human health, therefore constant monitoring is required.
Marović, Gordana, Bronzović, Maja
openaire   +1 more source

Deciduous Teeth as Indicators of 226Ra Exposure

Health Physics, 1966
N J, Petersen, L D, Samuels
openaire   +2 more sources