Temat: uranium concentration - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Determination of uranium concentrations in some building materials in Iraq
Autorzy:: Najam, L. A.
Tawfiq, N. F.
Yassen, Q. A.
Powiązania:: https://bibliotekanauki.pl/articles/148408.pdf
Data publikacji:: 2013
Wydawca:: Instytut Chemii i Techniki Jądrowej
Tematy:: uranium concentration
fission tracks
CR-39 track detectors
building materials
Opis:: Eleven commonly used building construction materials were collected from several origins in Iraq and analyzed for uranium concentration using a fission track technique. The results of measurements of uranium concentration ranged between 0.22 ppm in ceramics and 1.86 ppm in marble. The obtained results were well below the allowed limit of 11.7 ppm.
Źródło:: Nukleonika; 2013, 58, 2; 329-331
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Concentration of uranium in waters of the biggest lakes of the Tywa river drainage basin
Autorzy:: Kubiak, J.
Machula, S
Powiązania:: https://bibliotekanauki.pl/articles/952467.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Długie Lake
Tywa River
Dłużec Lake
Strzeszowskie Lake
Dołgie Lake
uranium
uranium concentration in water
Opis:: The paper presents the results of research of uranium concentrations in its different kinds – suspended and dissolved – in waters of the largest lakes located in the catchment area of the River Tywa – Strzeszowskie Lake, Dłużyna Lake, Długie Lake and Dłuzec Lake. Small (or the order of several 0,01 μg/l) variations in concentration of uranium in different lakes were noted. The study has also shown a seasonal variation – in a similar range – in concentrations of the above species of uranium, as well as total uranium. The content of dissolved uranium was highest in the autumn and winter, lower in the spring and summer. Overall, total uranium was found in greatest concen-trations during the fall, in other seasons concentrations were lower and similar to each other. Suspended uranium was found in largest concentrations in autumn and summer, in lower ones in spring and winter. Concentrations of the different species of uranium during the study period showed a small variation – variation coefficient below 10% for total uranium and dissolved uranium, and about 25% for suspended uranium. The observed concentrations of uranium were typical of uncontaminated unpolluted water.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 56-63
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The inflow of 234U and 238U from the River Odra drainage basin to the Baltic Sea
Autorzy:: Skwarzec, B.
Tuszkowska, A.
Borylo, A.
Powiązania:: https://bibliotekanauki.pl/articles/47957.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:: Baltic Sea
Odra River
Polska
Szczecin Lagoon
concentration
drainage basin
inflow
natural radionuclide
radionuclide
trace element
uranium
water sample
Opis:: In this study the activity of uranium isotopes 234U and 238U in Odra river water samples, collected from October 2003 to July 2004, was measured using alpha spectrometry. The uranium concentrations were different in each of the seasons analysed; the lowest values were recorded in summer. In all seasons, uranium concentrations were the highest in Bystrzyca river waters (from 27.81±0.29 Bq m−3 of 234U and 17.82±0.23 Bq m−3 of 238U in spring to 194.76±3.43 Bq m−3 of 234U and 134.88 ± 2.85 Bq m−3 of 238U in summer). The lowest concentrations were noted in the Mała Panew (from 1.33±0.02 Bq m−3 of 234U and 1.06±0.02 Bq m−3 of 238U in spring to 3.52 ± 0.05 Bq m−3 of 234U and 2.59 ± 0.04 Bq m−3 of 238U in autumn). The uranium radionuclides 234U and 238U in the water samples were not in radioactive equilibrium. The 234U/238U activity ratios were the highest in Odra water samples collected at Głogów (1.84 in autumn), and the lowest in water from the Noteć (1.03 in winter and spring). The 234U/238U activity ratio decreases along the main stream of the Odra, owing to changes in the salinity of the river’s waters. Annually, 8.19 tons of uranium (126.29 GBq of 234U and 100.80 GBq of 238U) flow into the Szczecin Lagoon with Odra river waters.
Źródło:: Oceanologia; 2010, 52, 4
0078-3234
Pojawia się w:: Oceanologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Uranium exposure induced reactive oxygen species and nitric oxide generation in Arabidopsis thaliana
Autorzy:: Tewari, R.
Horemans, N.
Nauts, R.
Wannijn, J.
Plevoets, J.
Van Hees, M.
Vandenhove, H.
Powiązania:: https://bibliotekanauki.pl/articles/80497.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: conference
reactive oxygen species
nitric oxide
uranium
stress response
Arabidopsis thaliana
root
heavy metal
toxicity
nitrite concentration
fluorescence
methylene blue
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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