English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The natural radionuclide ( 238 U,  226 Ra,  232 Th and  40 K) contents in soil were determined for three different regions of Bulgaria using high-resolution gamma-ray spectrometric analysis. A comparison of the dynamics of their behavior throughout the years was performed. Bulgaria is a country with intensive uranium mining activities. That is why radiological monitoring of closed uranium mining facilities in different regions of the country are obligatory and of great interest. This work presents results from such investigations made in regions where remediation was necessary. The results have been evaluated according to Bulgarian radionuclide environment contamination legislation.

Natural radioactivity in virgin soils and soils from some areas with closed uranium mining facilities in Bulgaria